[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Emacs-diffs] emacs/lisp ChangeLog Makefile.in speedbar.el pr...
|
From: |
Chong Yidong |
|
Subject: |
[Emacs-diffs] emacs/lisp ChangeLog Makefile.in speedbar.el pr... |
|
Date: |
Fri, 14 Aug 2009 23:02:42 +0000 |
CVSROOT: /sources/emacs
Module name: emacs
Changes by: Chong Yidong <cyd> 09/08/14 23:02:41
Modified files:
lisp : ChangeLog Makefile.in speedbar.el
lisp/progmodes : hideshow.el
Added files:
lisp/progmodes : js.el
Removed files:
lisp/progmodes : js2-mode.el
Log message:
* progmodes/js2-mode.el: File removed.
* Makefile.in (ELCFILES): Add js.el, and remove js2-mode.el.
* speedbar.el (speedbar-supported-extension-expressions): Add .js.
* progmodes/hideshow.el (hs-special-modes-alist): Add js-mode
entry.
* progmodes/js.el: New file.
CVSWeb URLs:
http://cvs.savannah.gnu.org/viewcvs/emacs/lisp/ChangeLog?cvsroot=emacs&r1=1.15935&r2=1.15936
http://cvs.savannah.gnu.org/viewcvs/emacs/lisp/Makefile.in?cvsroot=emacs&r1=1.186&r2=1.187
http://cvs.savannah.gnu.org/viewcvs/emacs/lisp/speedbar.el?cvsroot=emacs&r1=1.103&r2=1.104
http://cvs.savannah.gnu.org/viewcvs/emacs/lisp/progmodes/hideshow.el?cvsroot=emacs&r1=1.79&r2=1.80
http://cvs.savannah.gnu.org/viewcvs/emacs/lisp/progmodes/js.el?cvsroot=emacs&rev=1.1
http://cvs.savannah.gnu.org/viewcvs/emacs/lisp/progmodes/js2-mode.el?cvsroot=emacs&r1=1.3&r2=0
Patches:
Index: ChangeLog
===================================================================
RCS file: /sources/emacs/emacs/lisp/ChangeLog,v
retrieving revision 1.15935
retrieving revision 1.15936
diff -u -b -r1.15935 -r1.15936
--- ChangeLog 14 Aug 2009 18:18:39 -0000 1.15935
+++ ChangeLog 14 Aug 2009 23:02:38 -0000 1.15936
@@ -1,3 +1,18 @@
+2009-08-14 Chong Yidong <address@hidden>
+
+ * progmodes/js2-mode.el: File removed.
+
+ * Makefile.in (ELCFILES): Add js.el, and remove js2-mode.el.
+
+ * speedbar.el (speedbar-supported-extension-expressions): Add .js.
+
+ * progmodes/hideshow.el (hs-special-modes-alist): Add js-mode
+ entry.
+
+2009-08-14 Daniel Colascione <address@hidden>
+
+ * progmodes/js.el: New file.
+
2009-08-14 Mark A. Hershberger <address@hidden>
* timezone.el (timezone-parse-date): Add ability to understand ISO
Index: Makefile.in
===================================================================
RCS file: /sources/emacs/emacs/lisp/Makefile.in,v
retrieving revision 1.186
retrieving revision 1.187
diff -u -b -r1.186 -r1.187
--- Makefile.in 14 Aug 2009 09:24:02 -0000 1.186
+++ Makefile.in 14 Aug 2009 23:02:40 -0000 1.187
@@ -1064,7 +1064,7 @@
$(lisp)/progmodes/idlw-toolbar.elc \
$(lisp)/progmodes/idlwave.elc \
$(lisp)/progmodes/inf-lisp.elc \
- $(lisp)/progmodes/js2-mode.elc \
+ $(lisp)/progmodes/js.elc \
$(lisp)/progmodes/ld-script.elc \
$(lisp)/progmodes/m4-mode.elc \
$(lisp)/progmodes/make-mode.elc \
Index: speedbar.el
===================================================================
RCS file: /sources/emacs/emacs/lisp/speedbar.el,v
retrieving revision 1.103
retrieving revision 1.104
diff -u -b -r1.103 -r1.104
--- speedbar.el 10 Feb 2009 05:26:52 -0000 1.103
+++ speedbar.el 14 Aug 2009 23:02:40 -0000 1.104
@@ -690,7 +690,7 @@
;; change in the future.
(defcustom speedbar-supported-extension-expressions
(append '(".[ch]\\(\\+\\+\\|pp\\|c\\|h\\|xx\\)?" ".tex\\(i\\(nfo\\)?\\)?"
- ".el" ".emacs" ".l" ".lsp" ".p" ".java" ".f\\(90\\|77\\|or\\)?")
+ ".el" ".emacs" ".l" ".lsp" ".p" ".java" ".js"
".f\\(90\\|77\\|or\\)?")
(if speedbar-use-imenu-flag
'(".ada" ".p[lm]" ".tcl" ".m" ".scm" ".pm" ".py" ".g"
;; html is not supported by default, but an imenu tags package
Index: progmodes/hideshow.el
===================================================================
RCS file: /sources/emacs/emacs/lisp/progmodes/hideshow.el,v
retrieving revision 1.79
retrieving revision 1.80
diff -u -b -r1.79 -r1.80
--- progmodes/hideshow.el 9 Aug 2009 02:43:55 -0000 1.79
+++ progmodes/hideshow.el 14 Aug 2009 23:02:41 -0000 1.80
@@ -270,7 +270,8 @@
'((c-mode "{" "}" "/[*/]" nil nil)
(c++-mode "{" "}" "/[*/]" nil nil)
(bibtex-mode ("@\\S(*\\(\\s(\\)" 1))
- (java-mode "{" "}" "/[*/]" nil nil))
+ (java-mode "{" "}" "/[*/]" nil nil)
+ (js-mode "{" "}" "/[*/]" nil))
"*Alist for initializing the hideshow variables for different modes.
Each element has the form
(MODE START END COMMENT-START FORWARD-SEXP-FUNC ADJUST-BEG-FUNC).
Index: progmodes/js.el
===================================================================
RCS file: progmodes/js.el
diff -N progmodes/js.el
--- /dev/null 1 Jan 1970 00:00:00 -0000
+++ progmodes/js.el 14 Aug 2009 23:02:41 -0000 1.1
@@ -0,0 +1,3391 @@
+;;; js.el --- Major mode for editing JavaScript source text
+
+;; Copyright (C) 2008, 2009 Free Software Foundation, Inc.
+
+;; Author: Karl Landstrom <address@hidden>
+;; Daniel Colascione <address@hidden>
+;; Maintainer: Daniel Colascione <address@hidden>
+;; Version: 9
+;; Date: 2009-07-25
+;; Keywords: languages, oop, javascript
+
+;; This file is part of GNU Emacs.
+
+;; GNU Emacs is free software: you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+
+;; GNU Emacs is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+;; GNU General Public License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
+
+;;; Commentary
+
+;; This is based on Karl Landstrom's barebones javascript-mode. This
+;; is much more robust and works with cc-mode's comment filling
+;; (mostly).
+;;
+;; The main features of this JavaScript mode are syntactic
+;; highlighting (enabled with `font-lock-mode' or
+;; `global-font-lock-mode'), automatic indentation and filling of
+;; comments, C preprocessor fontification, and MozRepl integration.
+;;
+;; General Remarks:
+;;
+;; XXX: This mode assumes that block comments are not nested inside block
+;; XXX: comments
+;;
+;; Exported names start with "js-"; private names start with
+;; "js--".
+
+;;; Code:
+
+(eval-and-compile
+ (require 'cc-mode)
+ (require 'font-lock)
+ (require 'newcomment)
+ (require 'imenu)
+ (require 'etags)
+ (require 'thingatpt)
+ (require 'easymenu)
+ (require 'moz nil t)
+ (require 'json nil t))
+
+(eval-when-compile
+ (require 'cl)
+ (require 'comint)
+ (require 'ido)
+ ;; Swap the speed and safety values for debugging
+ (proclaim '(optimize (speed 3) (safety 0))))
+
+(defvar inferior-moz-buffer)
+(defvar moz-repl-name)
+(defvar ido-cur-list)
+(declare-function ido-mode "ido")
+(declare-function inferior-moz-process "mozrepl")
+
+;;; Constants
+
+(defconst js--name-start-re "[a-zA-Z_$]"
+ "Matches the first character of a Javascript identifier. No grouping")
+
+(defconst js--stmt-delim-chars "^;{}?:")
+
+(defconst js--name-re (concat js--name-start-re
+ "\\(?:\\s_\\|\\sw\\)*")
+ "Matches a Javascript identifier. No grouping.")
+
+(defconst js--objfield-re (concat js--name-re ":")
+ "Matches a Javascript object field start")
+
+(defconst js--dotted-name-re
+ (concat js--name-re "\\(?:\\." js--name-re "\\)*")
+ "Matches a dot-separated sequence of Javascript names")
+
+(defconst js--cpp-name-re js--name-re
+ "Matches a C preprocessor name")
+
+(defconst js--opt-cpp-start "^\\s-*#\\s-*\\([[:alnum:]]+\\)"
+ "Regexp matching the prefix of a cpp directive including the directive
+name, or nil in languages without preprocessor support. The first
+submatch surrounds the directive name.")
+
+(defconst js--plain-method-re
+ (concat "^\\s-*?\\(" js--dotted-name-re "\\)\\.prototype"
+ "\\.\\(" js--name-re "\\)\\s-*?=\\s-*?\\(function\\)\\_>")
+ "Regexp matching an old-fashioned explicit prototype \"method\"
+ declaration. Group 1 is a (possibly-dotted) class name, group 2
+ is a method name, and group 3 is the 'function' keyword." )
+
+(defconst js--plain-class-re
+ (concat "^\\s-*\\(" js--dotted-name-re "\\)\\.prototype"
+ "\\s-*=\\s-*{")
+ "Regexp matching an old-fashioned explicit prototype \"class\"
+ declaration, as in Class.prototype = { method1: ...} ")
+
+(defconst js--mp-class-decl-re
+ (concat "^\\s-*var\\s-+"
+ "\\(" js--name-re "\\)"
+ "\\s-*=\\s-*"
+ "\\(" js--dotted-name-re
+ "\\)\\.extend\\(?:Final\\)?\\s-*(\\s-*{?\\s-*$")
+ "var NewClass = BaseClass.extend(")
+
+(defconst js--prototype-obsolete-class-decl-re
+ (concat "^\\s-*\\(?:var\\s-+\\)?"
+ "\\(" js--dotted-name-re "\\)"
+ "\\s-*=\\s-*Class\\.create()")
+ "var NewClass = Class.create()")
+
+(defconst js--prototype-objextend-class-decl-re-1
+ (concat "^\\s-*Object\\.extend\\s-*("
+ "\\(" js--dotted-name-re "\\)"
+ "\\s-*,\\s-*{"))
+
+(defconst js--prototype-objextend-class-decl-re-2
+ (concat "^\\s-*\\(?:var\\s-+\\)?"
+ "\\(" js--dotted-name-re "\\)"
+ "\\s-*=\\s-*Object\\.extend\\s-*\("))
+
+(defconst js--prototype-class-decl-re
+ (concat "^\\s-*\\(?:var\\s-+\\)?"
+ "\\(" js--name-re "\\)"
+ "\\s-*=\\s-*Class\\.create\\s-*(\\s-*"
+ "\\(?:\\(" js--dotted-name-re "\\)\\s-*,\\s-*\\)?{?")
+ "var NewClass = Class.create({")
+
+;; Parent class name(s) (yes, multiple inheritance in Javascript) are
+;; matched with dedicated font-lock matchers
+(defconst js--dojo-class-decl-re
+ (concat "^\\s-*dojo\\.declare\\s-*(\"\\(" js--dotted-name-re "\\)"))
+
+(defconst js--extjs-class-decl-re-1
+ (concat "^\\s-*Ext\\.extend\\s-*("
+ "\\s-*\\(" js--dotted-name-re "\\)"
+ "\\s-*,\\s-*\\(" js--dotted-name-re "\\)")
+ "ExtJS class declaration (style 1)")
+
+(defconst js--extjs-class-decl-re-2
+ (concat "^\\s-*\\(?:var\\s-+\\)?"
+ "\\(" js--name-re "\\)"
+ "\\s-*=\\s-*Ext\\.extend\\s-*(\\s-*"
+ "\\(" js--dotted-name-re "\\)")
+ "ExtJS class declaration (style 2)")
+
+(defconst js--mochikit-class-re
+ (concat "^\\s-*MochiKit\\.Base\\.update\\s-*(\\s-*"
+ "\\(" js--dotted-name-re "\\)")
+ "MochiKit class declaration?")
+
+(defconst js--dummy-class-style
+ '(:name "[Automatically Generated Class]"))
+
+(defconst js--class-styles
+ `((:name "Plain"
+ :class-decl ,js--plain-class-re
+ :prototype t
+ :contexts (toplevel)
+ :framework javascript)
+
+ (:name "MochiKit"
+ :class-decl ,js--mochikit-class-re
+ :prototype t
+ :contexts (toplevel)
+ :framework mochikit)
+
+ (:name "Prototype (Obsolete)"
+ :class-decl ,js--prototype-obsolete-class-decl-re
+ :contexts (toplevel)
+ :framework prototype)
+
+ (:name "Prototype (Modern)"
+ :class-decl ,js--prototype-class-decl-re
+ :contexts (toplevel)
+ :framework prototype)
+
+ (:name "Prototype (Object.extend)"
+ :class-decl ,js--prototype-objextend-class-decl-re-1
+ :prototype t
+ :contexts (toplevel)
+ :framework prototype)
+
+ (:name "Prototype (Object.extend) 2"
+ :class-decl ,js--prototype-objextend-class-decl-re-2
+ :prototype t
+ :contexts (toplevel)
+ :framework prototype)
+
+ (:name "Dojo"
+ :class-decl ,js--dojo-class-decl-re
+ :contexts (toplevel)
+ :framework dojo)
+
+ (:name "ExtJS (style 1)"
+ :class-decl ,js--extjs-class-decl-re-1
+ :prototype t
+ :contexts (toplevel)
+ :framework extjs)
+
+ (:name "ExtJS (style 2)"
+ :class-decl ,js--extjs-class-decl-re-2
+ :contexts (toplevel)
+ :framework extjs)
+
+ (:name "Merrill Press"
+ :class-decl ,js--mp-class-decl-re
+ :contexts (toplevel)
+ :framework merrillpress))
+
+ "A list of class definition styles.
+
+A class definition style is a plist with the following keys:
+
+:name is a human-readable name of the class type
+
+:class-decl is a regular expression giving the start of the
+class. Its first group must match the name of its class. If there
+is a parent class, the second group should match, and it should
+be the name of the class.
+
+If :prototype is present and non-nil, the parser will merge
+declarations for this constructs with others at the same lexical
+level that have the same name. Otherwise, multiple definitions
+will create multiple top-level entries. Don't use :prototype
+unnecessarily: it has an associated cost in performance.
+
+If :strip-prototype is present and non-nil, then if the class
+name as matched contains
+")
+
+(defconst js--available-frameworks
+ (loop with available-frameworks
+ for style in js--class-styles
+ for framework = (plist-get style :framework)
+ unless (memq framework available-frameworks)
+ collect framework into available-frameworks
+ finally return available-frameworks)
+
+ "List of available frameworks symbols")
+
+(defconst js--function-heading-1-re
+ (concat
+ "^\\s-*function\\s-+\\(" js--name-re "\\)")
+ "Regular expression matching the start of a function header. Match group 1
+is the name of the function.")
+
+(defconst js--function-heading-2-re
+ (concat
+ "^\\s-*\\(" js--name-re "\\)\\s-*:\\s-*function\\_>")
+ "Regular expression matching the start of a function entry in
+ an associative array. Match group 1 is the name of the function.")
+
+(defconst js--function-heading-3-re
+ (concat
+ "^\\s-*\\(?:var\\s-+\\)?\\(" js--dotted-name-re "\\)"
+ "\\s-*=\\s-*function\\_>")
+ "Matches a line in the form var MUMBLE = function. Match group
+ 1 is MUMBLE.")
+
+(defconst js--macro-decl-re
+ (concat "^\\s-*#\\s-*define\\s-+\\(" js--cpp-name-re "\\)\\s-*(")
+ "Regular expression matching a CPP macro definition up to the opening
+parenthesis. Match group 1 is the name of the function.")
+
+(defun js--regexp-opt-symbol (list)
+ "Like regexp-opt, but surround the optimized regular expression
+with `\\\\_<' and `\\\\_>'."
+ (concat "\\_<" (regexp-opt list t) "\\_>"))
+
+(defconst js--keyword-re
+ (js--regexp-opt-symbol
+ '("abstract" "break" "case" "catch" "class" "const"
+ "continue" "debugger" "default" "delete" "do" "else"
+ "enum" "export" "extends" "final" "finally" "for"
+ "function" "goto" "if" "implements" "import" "in"
+ "instanceof" "interface" "native" "new" "package"
+ "private" "protected" "public" "return" "static"
+ "super" "switch" "synchronized" "throw"
+ "throws" "transient" "try" "typeof" "var" "void" "let"
+ "yield" "volatile" "while" "with"))
+ "Regular expression matching any JavaScript keyword.")
+
+(defconst js--basic-type-re
+ (js--regexp-opt-symbol
+ '("boolean" "byte" "char" "double" "float" "int" "long"
+ "short" "void"))
+ "Regular expression matching any predefined type in JavaScript.")
+
+(defconst js--constant-re
+ (js--regexp-opt-symbol '("false" "null" "undefined"
+ "Infinity" "NaN"
+ "true" "arguments" "this"))
+ "Regular expression matching any future reserved words in JavaScript.")
+
+
+(defconst js--font-lock-keywords-1
+ (list
+ "\\_<import\\_>"
+ (list js--function-heading-1-re 1 font-lock-function-name-face)
+ (list js--function-heading-2-re 1 font-lock-function-name-face))
+ "Level one font lock.")
+
+(defconst js--font-lock-keywords-2
+ (append js--font-lock-keywords-1
+ (list (list js--keyword-re 1 font-lock-keyword-face)
+ (list "\\_<for\\_>"
+ "\\s-+\\(each\\)\\_>" nil nil
+ (list 1 'font-lock-keyword-face))
+ (cons js--basic-type-re font-lock-type-face)
+ (cons js--constant-re font-lock-constant-face)))
+ "Level two font lock.")
+
+;; js--pitem is the basic building block of the lexical
+;; database. When one refers to a real part of the buffer, the region
+;; of text to which it refers is split into a conceptual header and
+;; body. Consider the (very short) block described by a hypothetical
+;; js--pitem:
+;;
+;; function foo(a,b,c) { return 42; }
+;; ^ ^ ^
+;; | | |
+;; +- h-begin +- h-end +- b-end
+;;
+;; (Remember that these are buffer positions, and therefore point
+;; between characters, not at them. An arrow drawn to a character
+;; indicates the corresponding position is between that character and
+;; the one immediately preceding it.)
+;;
+;; The header is the region of text [h-begin, h-end], and is
+;; the text needed to unambiguously recognize the start of the
+;; construct. If the entire header is not present, the construct is
+;; not recognized at all. No other pitems may be nested inside the
+;; header.
+;;
+;; The body is the region [h-end, b-end]. It may contain nested
+;; js--pitem instances. The body of a pitem may be empty: in
+;; that case, b-end is equal to header-end.
+;;
+;; The three points obey the following relationship:
+;;
+;; h-begin < h-end <= b-end
+;;
+;; We put a text property in the buffer on the character *before*
+;; h-end, and if we see it, on the character *before* b-end.
+;;
+;; The text property for h-end, js--pstate, is actually a list
+;; of all js--pitem instances open after the marked character.
+;;
+;; The text property for b-end, js--pend, is simply the
+;; js--pitem that ends after the marked character. (Because
+;; pitems always end when the paren-depth drops below a critical
+;; value, and because we can only drop one level per character, only
+;; one pitem may end at a given character.)
+;;
+;; In the structure below, we only store h-begin and (sometimes)
+;; b-end. We can trivially and quickly find h-end by going to h-begin
+;; and searching for an js--pstate text property. Since no other
+;; js--pitem instances can be nested inside the header of a
+;; pitem, the location after the character with this text property
+;; must be h-end.
+;;
+;; js--pitem instances are never modified (with the exception
+;; of the b-end field). Instead, modified copies are added at subseqnce parse
points.
+;; (The exception for b-end and its caveats is described below.)
+;;
+
+(defstruct (js--pitem (:type list))
+ ;; IMPORTANT: Do not alter the position of fields within the list.
+ ;; Various bits of code depend on their positions, particularly
+ ;; anything that manipulates the list of children.
+
+ ;; List of children inside this pitem's body
+ (children nil :read-only t)
+
+ ;; When we reach this paren depth after h-end, the pitem ends
+ (paren-depth nil :read-only t)
+
+ ;; Symbol or class-style plist if this is a class
+ (type nil :read-only t)
+
+ ;; See above
+ (h-begin nil :read-only t)
+
+ ;; List of strings giving the parts of the name of this pitem (e.g.,
+ ;; '("MyClass" "myMethod"), or t if this pitem is anonymous
+ (name nil :read-only t)
+
+ ;; THIS FIELD IS MUTATED, and its value is shared by all copies of
+ ;; this pitem: when we copy-and-modify pitem instances, we share
+ ;; their tail structures, so all the copies actually have the same
+ ;; terminating cons cell. We modify that shared cons cell directly.
+ ;;
+ ;; The field value is either a number (buffer location) or nil if
+ ;; unknown.
+ ;;
+ ;; If the field's value is greater than `js--cache-end', the
+ ;; value is stale and must be treated as if it were nil. Conversely,
+ ;; if this field is nil, it is guaranteed that this pitem is open up
+ ;; to at least `js--cache-end'. (This property is handy when
+ ;; computing whether we're inside a given pitem.)
+ ;;
+ (b-end nil))
+
+(defconst js--initial-pitem
+ (make-js--pitem
+ :paren-depth most-negative-fixnum
+ :type 'toplevel)
+
+ "The pitem we start parsing with")
+
+;;; User Customization
+
+(defgroup js nil
+ "Customization variables for `js-mode'."
+ :tag "JavaScript"
+ :group 'languages)
+
+(defcustom js-indent-level 4
+ "Number of spaces for each indentation step."
+ :type 'integer
+ :group 'js)
+
+(defcustom js-expr-indent-offset 0
+ "Number of additional spaces used for indentation of continued
+expressions. The value must be no less than minus
+`js-indent-level'."
+ :type 'integer
+ :group 'js)
+
+(defcustom js-auto-indent-flag t
+ "Automatic indentation with punctuation characters. If non-nil, the
+current line is indented when certain punctuations are inserted."
+ :type 'boolean
+ :group 'js)
+
+(defcustom js-flat-functions nil
+ "Treat nested functions as if they were top-level functions for
+function movement, marking, and so on."
+ :type 'boolean
+ :group 'js)
+
+(defcustom js-comment-lineup-func #'c-lineup-C-comments
+ "cc-mode-style lineup function for C comments"
+ :type 'function
+ :group 'js)
+
+(defcustom js-enabled-frameworks js--available-frameworks
+ "Select which frameworks js-mode will recognize.
+
+Turn off some frameworks you seldom use to improve performance.
+The set of recognized frameworks can also be overriden on a
+per-buffer basis."
+ :type (cons 'set (mapcar (lambda (x)
+ (list 'const x))
+ js--available-frameworks))
+ :group 'js)
+
+(defcustom js-js-switch-tabs
+ (and (memq system-type '(darwin)) t)
+ "Non-nil if Emacs should display tabs while selecting them.
+ Useful only if the windowing system has a good mechanism for
+ preventing Firefox from stealing the keyboard focus."
+ :type 'boolean
+ :group 'js)
+
+(defcustom js-js-tmpdir
+ "~/.emacs.d/js/js"
+ "Temporary directory used for communicating with Mozilla. It
+ must be readable and writable by both Mozilla and Emacs."
+ :type 'directory
+ :group 'js)
+
+(defcustom js-js-timeout 5
+ "Wait this many seconds for a reply from Mozilla when executing
+commands. Increase this value if you are getting timeout
+messages."
+ :type 'integer
+ :group 'js)
+
+;;; KeyMap
+
+(defvar js-mode-map
+ (let ((keymap (make-sparse-keymap)))
+ (mapc (lambda (key)
+ (define-key keymap key #'js-insert-and-indent))
+ '("+" "-" "*" "{" "}" "(" ")" ":" ";" ","))
+ (define-key keymap [(control ?c) (meta ?:)] #'js-eval)
+ (define-key keymap [(control ?c) (control ?j)] #'js-set-js-context)
+ (define-key keymap [(control meta ?x)] #'js-eval-defun)
+ (define-key keymap [(meta ?.)] #'js-find-symbol)
+
+ (easy-menu-define nil keymap "Javascript Menu"
+ '("Javascript"
+ ["Select new Mozilla contextâ¦" js-set-js-context
+ (fboundp #'inferior-moz-process)]
+ ["Evaluate expression in Mozilla contextâ¦" js-eval
+ (fboundp #'inferior-moz-process)]
+ ["Send current function to Mozillaâ¦" js-eval-defun
+ (fboundp #'inferior-moz-process)]
+ )
+ )
+
+ keymap)
+ "Keymap for js-mode")
+
+(defun js-insert-and-indent (key)
+ "Runs the command bound to KEY in the global keymap, and if
+we're not in a string or comment, indents the current line."
+ (interactive (list (this-command-keys)))
+ (call-interactively (lookup-key (current-global-map) key))
+ (let ((syntax (save-restriction (widen) (syntax-ppss))))
+ (when (or (and (not (nth 8 syntax))
+ js-auto-indent-flag)
+ (and (nth 4 syntax)
+ (eq (current-column)
+ (1+ (current-indentation)))))
+
+ (indent-according-to-mode))))
+
+;;; Syntax table and parsing
+
+(defvar js-mode-syntax-table
+ (let ((table (make-syntax-table)))
+ (c-populate-syntax-table table)
+ (modify-syntax-entry ?$ "_" table)
+ table)
+ "Syntax table used in JS mode.")
+
+(defvar js--quick-match-re nil
+ "Autogenerated regular expression to match buffer constructs")
+
+(defvar js--quick-match-re-func nil
+ "Autogenerated regular expression to match buffer constructs
+and functions")
+
+(make-variable-buffer-local 'js--quick-match-re)
+(make-variable-buffer-local 'js--quick-match-re-func)
+
+(defvar js--cache-end 1
+ "Last place in the buffer the function cache is valid")
+(make-variable-buffer-local 'js--cache-end)
+
+(defvar js--last-parse-pos nil
+ "Last place we parsed up to in js--ensure-cache")
+(make-variable-buffer-local 'js--last-parse-pos)
+
+(defvar js--state-at-last-parse-pos nil
+ "pstate at js--last-parse-pos")
+(make-variable-buffer-local 'js--state-at-last-parse-pos)
+
+(defun js--flatten-list (list)
+ (loop for item in list
+ nconc (cond ((consp item)
+ (js--flatten-list item))
+
+ (item (list item)))))
+
+(defun js--maybe-join (prefix separator suffix &rest list)
+ "If LIST contains any element that is not nil, return its
+non-nil elements, separated by SEPARATOR, prefixed by PREFIX, and
+ended with SUFFIX as with `concat'. Otherwise, if LIST is empty,
+return nil. If any element in LIST is itself a list, flatten that
+element."
+ (setq list (js--flatten-list list))
+ (when list
+ (concat prefix (mapconcat #'identity list separator) suffix)))
+
+(defun js--update-quick-match-re ()
+ "Update js--quick-match-re based on the current set of
+enabled frameworks"
+ (setq js--quick-match-re
+ (js--maybe-join
+ "^[ \t]*\\(?:" "\\|" "\\)"
+
+ ;; #define mumble
+ "#define[ \t]+[a-zA-Z_]"
+
+ (when (memq 'extjs js-enabled-frameworks)
+ "Ext\\.extend")
+
+ (when (memq 'prototype js-enabled-frameworks)
+ "Object\\.extend")
+
+ ;; var mumble = THING (
+ (js--maybe-join
+ "\\(?:var[ \t]+\\)?[a-zA-Z_$0-9.]+[ \t]*=[ \t]*\\(?:"
+ "\\|"
+ "\\)[ \t]*\("
+
+ (when (memq 'prototype js-enabled-frameworks)
+ "Class\\.create")
+
+ (when (memq 'extjs js-enabled-frameworks)
+ "Ext\\.extend")
+
+ (when (memq 'merrillpress js-enabled-frameworks)
+ "[a-zA-Z_$0-9]+\\.extend\\(?:Final\\)?"))
+
+ (when (memq 'dojo js-enabled-frameworks)
+ "dojo\\.declare[ \t]*\(")
+
+ (when (memq 'mochikit js-enabled-frameworks)
+ "MochiKit\\.Base\\.update[ \t]*\(")
+
+ ;; mumble.prototypeTHING
+ (js--maybe-join
+ "[a-zA-Z_$0-9.]+\\.prototype\\(?:" "\\|" "\\)"
+
+ (when (memq 'javascript js-enabled-frameworks)
+ '( ;; foo.prototype.bar = function(
+ "\\.[a-zA-Z_$0-9]+[ \t]*=[ \t]*function[ \t]*\("
+
+ ;; mumble.prototype = {
+ "[ \t]*=[ \t]*{")))))
+
+ (setq js--quick-match-re-func
+ (concat "function\\|" js--quick-match-re)))
+
+(defun js--forward-text-property (propname)
+ "Move over the next value of PROPNAME in the buffer. If found,
+return that value and leave point after the character having that
+value, otherwise return nil and leave point at EOB."
+ (let ((next-value (get-text-property (point) propname)))
+ (if next-value
+ (forward-char)
+
+ (goto-char (next-single-property-change
+ (point) propname nil (point-max)))
+ (unless (eobp)
+ (setq next-value (get-text-property (point) propname))
+ (forward-char)))
+
+ next-value))
+
+(defun js--backward-text-property (propname)
+ "Move over the previous value of PROPNAME in the buffer. If found,
+return that value and leave point just before the character that
+has that value, otherwise return nil and leave point at BOB."
+ (unless (bobp)
+ (let ((prev-value (get-text-property (1- (point)) propname)))
+ (if prev-value
+ (backward-char)
+
+ (goto-char (previous-single-property-change
+ (point) propname nil (point-min)))
+
+ (unless (bobp)
+ (backward-char)
+ (setq prev-value (get-text-property (point) propname))))
+
+ prev-value)))
+
+(defsubst js--forward-pstate ()
+ (js--forward-text-property 'js--pstate))
+
+(defsubst js--backward-pstate ()
+ (js--backward-text-property 'js--pstate))
+
+(defun js--pitem-goto-h-end (pitem)
+ (goto-char (js--pitem-h-begin pitem))
+ (js--forward-pstate))
+
+(defun js--re-search-forward-inner (regexp &optional bound count)
+ "Auxiliary function for `js--re-search-forward'."
+ (let ((parse)
+ str-terminator
+ (orig-macro-end (save-excursion
+ (when (js--beginning-of-macro)
+ (c-end-of-macro)
+ (point)))))
+ (while (> count 0)
+ (re-search-forward regexp bound)
+ (setq parse (syntax-ppss))
+ (cond ((setq str-terminator (nth 3 parse))
+ (when (eq str-terminator t)
+ (setq str-terminator ?/))
+ (re-search-forward
+ (concat "\\([^\\]\\|^\\)" (string str-terminator))
+ (save-excursion (end-of-line) (point)) t))
+ ((nth 7 parse)
+ (forward-line))
+ ((or (nth 4 parse)
+ (and (eq (char-before) ?\/) (eq (char-after) ?\*)))
+ (re-search-forward "\\*/"))
+ ((and (not (and orig-macro-end
+ (<= (point) orig-macro-end)))
+ (js--beginning-of-macro))
+ (c-end-of-macro))
+ (t
+ (setq count (1- count))))))
+ (point))
+
+
+(defun js--re-search-forward (regexp &optional bound noerror count)
+ "Search forward but ignore strings, cpp macros, and comments.
+Invokes `re-search-forward' but treats the buffer as if strings,
+cpp macros, and comments have been removed.
+
+If invoked while inside a macro, treat the contents of the macro
+as normal text.
+
+"
+ (let ((saved-point (point))
+ (search-expr
+ (cond ((null count)
+ '(js--re-search-forward-inner regexp bound 1))
+ ((< count 0)
+ '(js--re-search-backward-inner regexp bound (- count)))
+ ((> count 0)
+ '(js--re-search-forward-inner regexp bound count)))))
+ (condition-case err
+ (eval search-expr)
+ (search-failed
+ (goto-char saved-point)
+ (unless noerror
+ (error (error-message-string err)))))))
+
+
+(defun js--re-search-backward-inner (regexp &optional bound count)
+ "Auxiliary function for `js--re-search-backward'."
+ (let ((parse)
+ str-terminator
+ (orig-macro-start
+ (save-excursion
+ (and (js--beginning-of-macro)
+ (point)))))
+ (while (> count 0)
+ (re-search-backward regexp bound)
+ (when (and (> (point) (point-min))
+ (save-excursion (backward-char) (looking-at "/[/*]")))
+ (forward-char))
+ (setq parse (syntax-ppss))
+ (cond ((setq str-terminator (nth 3 parse))
+ (when (eq str-terminator t)
+ (setq str-terminator ?/))
+ (re-search-backward
+ (concat "\\([^\\]\\|^\\)" (string str-terminator))
+ (save-excursion (beginning-of-line) (point)) t))
+ ((nth 7 parse)
+ (goto-char (nth 8 parse)))
+ ((or (nth 4 parse)
+ (and (eq (char-before) ?/) (eq (char-after) ?*)))
+ (re-search-backward "/\\*"))
+ ((and (not (and orig-macro-start
+ (>= (point) orig-macro-start)))
+ (js--beginning-of-macro)))
+ (t
+ (setq count (1- count))))))
+ (point))
+
+
+(defun js--re-search-backward (regexp &optional bound noerror count)
+ "Search backward but ignore strings, preprocessor macros, and
+comments. Invokes `re-search-backward' but treats the buffer as
+if strings, preprocessor macros, and comments have been removed.
+
+If inside a macro when called, treat the macro as normal text.
+"
+ (let ((saved-point (point))
+ (search-expr
+ (cond ((null count)
+ '(js--re-search-backward-inner regexp bound 1))
+ ((< count 0)
+ '(js--re-search-forward-inner regexp bound (- count)))
+ ((> count 0)
+ '(js--re-search-backward-inner regexp bound count)))))
+ (condition-case err
+ (eval search-expr)
+ (search-failed
+ (goto-char saved-point)
+ (unless noerror
+ (error (error-message-string err)))))))
+
+(defun js--forward-expression ()
+ "Move forward over a whole expression. Doesn't move over
+expressions continued across lines, but we don't actually care"
+ (loop
+ ;; non-continued case; simplistic, but good enough?
+ do (loop until (or (eolp)
+ (progn
+ (forward-comment most-positive-fixnum)
+ (memq (char-after) '(?\, ?\; ?\] ?\) ?\}))))
+ do (forward-sexp))
+
+ while (and (eq (char-after) ?\n)
+ (save-excursion
+ (forward-char)
+ (js--continued-expression-p)))))
+
+(defun js--forward-function-decl ()
+ "Move forward over a function declaration with point at the
+'function' keyword. Return non-nil if this is a
+syntactically-correct non-expression function, nil otherwise.
+Specifically, return the name of the function, or t if the name
+could not be determined."
+ (assert (looking-at "\\_<function\\_>"))
+ (let ((name t))
+ (forward-word)
+ (forward-comment most-positive-fixnum)
+ (when (looking-at js--name-re)
+ (setq name (match-string-no-properties 0))
+ (goto-char (match-end 0)))
+ (forward-comment most-positive-fixnum)
+ (and (eq (char-after) ?\( )
+ (ignore-errors (forward-list) t)
+ (progn (forward-comment most-positive-fixnum)
+ (and (eq (char-after) ?{)
+ name)))))
+
+(defun js--function-prologue-beginning (&optional pos)
+ "Return the start of the function prologue that contains POS,
+or nil if we're not in a function prologue. A function prologue
+is everything from start of the definition up to and including
+the opening brace. POS defaults to point."
+
+ (let (prologue-begin)
+ (save-excursion
+ (if pos
+ (goto-char pos)
+ (setq pos (point)))
+
+ (when (save-excursion
+ (forward-line 0)
+ (or (looking-at js--function-heading-2-re)
+ (looking-at js--function-heading-3-re)))
+
+ (setq prologue-begin (match-beginning 1))
+ (when (<= prologue-begin pos)
+ (goto-char (match-end 0))))
+
+ (skip-syntax-backward "w_")
+ (and (or (looking-at "\\_<function\\_>")
+ (js--re-search-backward "\\_<function\\_>" nil t))
+
+ (save-match-data (goto-char (match-beginning 0))
+ (js--forward-function-decl))
+
+ (<= pos (point))
+ (or prologue-begin (match-beginning 0))))))
+
+(defun js--beginning-of-defun-raw ()
+ "Internal helper for js--beginning-of-defun. Go to
+previous defun-beginning and return the parse state for it, or
+nil if we went all the way back to bob and don't find anything."
+ (js--ensure-cache)
+ (let (pstate)
+ (while (and (setq pstate (js--backward-pstate))
+ (not (eq 'function (js--pitem-type (car pstate))))))
+ (and (not (bobp)) pstate)))
+
+(defun js--pstate-is-toplevel-defun (pstate)
+ "If PSTATE represents a non-empty top-level defun, return the
+top-most pitem. Otherwise, return nil."
+ (loop for pitem in pstate
+ with func-depth = 0
+ with func-pitem
+ if (eq 'function (js--pitem-type pitem))
+ do (incf func-depth)
+ and do (setq func-pitem pitem)
+ finally return (if (eq func-depth 1) func-pitem)))
+
+(defun js--beginning-of-defun-nested ()
+ "Internal helper for js--beginning-of-defun. Returns the
+pitem of the function we went to the beginning of."
+
+ (or
+ ;; Look for the smallest function that encloses point...
+ (loop for pitem in (js--parse-state-at-point)
+ if (and (eq 'function (js--pitem-type pitem))
+ (js--inside-pitem-p pitem))
+ do (goto-char (js--pitem-h-begin pitem))
+ and return pitem)
+
+ ;; ...and if that isn't found, look for the previous top-level
+ ;; defun
+ (loop for pstate = (js--backward-pstate)
+ while pstate
+ if (js--pstate-is-toplevel-defun pstate)
+ do (goto-char (js--pitem-h-begin it))
+ and return it)))
+
+(defun js--beginning-of-defun-flat ()
+ "Internal helper for js--beginning-of-defun"
+
+ (let ((pstate (js--beginning-of-defun-raw)))
+ (when pstate
+ (goto-char (js--pitem-h-begin (car pstate))))))
+
+(defun js--beginning-of-defun (&optional arg)
+ "Used as beginning-of-defun-function"
+
+ (setq arg (or arg 1))
+ (while (and (not (eobp)) (< arg 0))
+ (incf arg)
+ (when (and (not js-flat-functions)
+ (or (eq (js-syntactic-context) 'function)
+ (js--function-prologue-beginning)))
+ (js--end-of-defun))
+
+ (if (js--re-search-forward
+ "\\_<function\\_>" nil t)
+ (goto-char (js--function-prologue-beginning))
+ (goto-char (point-max))))
+
+ (while (> arg 0)
+ (decf arg)
+ ;; If we're just past the end of a function, the user probably wants
+ ;; to go to the beginning of *that* function
+ (when (eq (char-before) ?})
+ (backward-char))
+
+ (let ((prologue-begin (js--function-prologue-beginning)))
+ (cond ((and prologue-begin (< prologue-begin (point)))
+ (goto-char prologue-begin))
+
+ (js-flat-functions
+ (js--beginning-of-defun-flat))
+ (t
+ (js--beginning-of-defun-nested))))))
+
+(defun js--flush-caches (&optional beg ignored)
+ "Flush syntax cache info after position BEG. BEG defaults to
+point-min, flushing the entire cache."
+ (interactive)
+ (setq beg (or beg (save-restriction (widen) (point-min))))
+ (setq js--cache-end (min js--cache-end beg)))
+
+(defmacro js--debug (&rest arguments)
+ ;; `(message ,@arguments)
+ )
+
+(defun js--ensure-cache--pop-if-ended (open-items paren-depth)
+ (let ((top-item (car open-items)))
+ (when (<= paren-depth (js--pitem-paren-depth top-item))
+ (assert (not (get-text-property (1- (point)) 'js-pend)))
+ (put-text-property (1- (point)) (point) 'js--pend top-item)
+ (setf (js--pitem-b-end top-item) (point))
+ (setq open-items
+ ;; open-items must contain at least two items for this to
+ ;; work, but because we push a dummy item to start with,
+ ;; that assumption holds.
+ (cons (js--pitem-add-child (second open-items) top-item)
+ (cddr open-items)))))
+
+ open-items)
+
+(defmacro js--ensure-cache--update-parse ()
+ "Helper for use inside js--ensure-cache. Updates parsing
+information up to point. Refers to parse, prev-parse-point,
+goal-point, and open-items bound lexically in the body of
+`js--ensure-cache'."
+ `(progn
+ (setq goal-point (point))
+ (goto-char prev-parse-point)
+ (while (progn
+ (setq open-items (js--ensure-cache--pop-if-ended
+ open-items (car parse)))
+ ;; Make sure parse-partial-sexp doesn't stop because we *entered*
+ ;; the given depth -- i.e., make sure we're deeper than the
target
+ ;; depth.
+ (assert (> (nth 0 parse)
+ (js--pitem-paren-depth (car open-items))))
+ (setq parse (parse-partial-sexp
+ prev-parse-point goal-point
+ (js--pitem-paren-depth (car open-items))
+ nil parse))
+
+;; (let ((overlay (make-overlay prev-parse-point (point))))
+;; (overlay-put overlay 'face '(:background "red"))
+;; (unwind-protect
+;; (progn
+;; (js--debug "parsed: %S" parse)
+;; (sit-for 1))
+;; (delete-overlay overlay)))
+
+ (setq prev-parse-point (point))
+ (< (point) goal-point)))
+
+ (setq open-items (js--ensure-cache--pop-if-ended
+ open-items (car parse)))))
+
+(defun js--show-cache-at-point ()
+ (interactive)
+ (require 'pp)
+ (let ((prop (get-text-property (point) 'js--pstate)))
+ (with-output-to-temp-buffer "*Help*"
+ (pp prop))))
+
+(defun js--split-name (string)
+ "Splits a name into its dot-separated parts. Also removes any
+prototype parts from the split name (unless the name is just
+\"prototype\" to start with, that is)."
+ (let ((name (save-match-data
+ (split-string string "\\." t))))
+ (unless (and (= (length name) 1)
+ (equal (car name) "prototype"))
+
+ (setq name (remove "prototype" name)))))
+
+(defvar js--guess-function-name-start nil
+ "Secondary out-variable for js--guess-function-name")
+
+(defun js--guess-function-name (position)
+ "Guess the name of the function at POSITION, which should be
+the just after the end of the word 'function'. Return the name of
+the function or nil if the name could not be guessed. Clobbers
+match data. If in guessing the function name we find the preamble
+begins earlier than expected, set `js--guess-function-name-start'
+to that position, otherwise set that variable to nil."
+
+ (setq js--guess-function-name-start nil)
+ (save-excursion
+ (goto-char position)
+ (forward-line 0)
+ (cond
+ ((looking-at js--function-heading-3-re)
+ (and (eq (match-end 0) position)
+ (setq js--guess-function-name-start (match-beginning 1))
+ (match-string-no-properties 1)))
+
+ ((looking-at js--function-heading-2-re)
+ (and (eq (match-end 0) position)
+ (setq js--guess-function-name-start (match-beginning 1))
+ (match-string-no-properties 1))))))
+
+(defun js--clear-stale-cache ()
+ ;; Clear any endings that occur after point
+ (let (end-prop)
+ (save-excursion
+ (while (setq end-prop (js--forward-text-property
+ 'js--pend))
+ (setf (js--pitem-b-end end-prop) nil))))
+
+ ;; Remove any cache properties after this point
+ (remove-text-properties (point) (point-max)
+ '(js--pstate t js--pend t)))
+
+(defun js--ensure-cache (&optional limit)
+ "Ensures brace cache is valid up to the character before LIMIT.
+LIMIT defaults to point."
+ (setq limit (or limit (point)))
+ (when (< js--cache-end limit)
+
+ (c-save-buffer-state
+ (open-items
+ orig-match-start
+ orig-match-end
+ orig-depth
+ parse
+ prev-parse-point
+ name
+ case-fold-search
+ filtered-class-styles
+ new-item
+ goal-point
+ end-prop)
+
+ ;; Figure out which class styles we need to look for
+ (setq filtered-class-styles
+ (loop for style in js--class-styles
+ if (memq (plist-get style :framework)
+ js-enabled-frameworks)
+ collect style))
+
+ (save-excursion
+ (save-restriction
+ (widen)
+
+ ;; Find last known good position
+ (goto-char js--cache-end)
+ (unless (bobp)
+ (setq open-items (get-text-property
+ (1- (point)) 'js--pstate))
+
+ (unless open-items
+ (goto-char (previous-single-property-change
+ (point) 'js--pstate nil (point-min)))
+
+ (unless (bobp)
+ (setq open-items (get-text-property (1- (point))
+ 'js--pstate))
+ (assert open-items))))
+
+ (unless open-items
+ ;; Make a placeholder for the top-level definition
+ (setq open-items (list js--initial-pitem)))
+
+ (setq parse (syntax-ppss))
+ (setq prev-parse-point (point))
+
+ (js--clear-stale-cache)
+
+ (narrow-to-region (point-min) limit)
+
+ (loop while (re-search-forward js--quick-match-re-func nil t)
+ for orig-match-start = (goto-char (match-beginning 0))
+ for orig-match-end = (match-end 0)
+ do (js--ensure-cache--update-parse)
+ for orig-depth = (nth 0 parse)
+
+ ;; Each of these conditions should return non-nil if
+ ;; we should add a new item and leave point at the end
+ ;; of the new item's header (h-end in the
+ ;; js--pitem diagram). This point is the one
+ ;; after the last character we need to unambiguously
+ ;; detect this construct. If one of these evaluates to
+ ;; nil, the location of the point is ignored.
+ if (cond
+ ;; In comment or string
+ ((nth 8 parse) nil)
+
+ ;; Regular function declaration
+ ((and (looking-at "\\_<function\\_>")
+ (setq name (js--forward-function-decl)))
+
+ (when (eq name t)
+ (setq name (js--guess-function-name orig-match-end))
+ (if name
+ (when js--guess-function-name-start
+ (setq orig-match-start
+ js--guess-function-name-start))
+
+ (setq name t)))
+
+ (assert (eq (char-after) ?{))
+ (forward-char)
+ (make-js--pitem
+ :paren-depth orig-depth
+ :h-begin orig-match-start
+ :type 'function
+ :name (if (eq name t)
+ name
+ (js--split-name name))))
+
+ ;; Macro
+ ((looking-at js--macro-decl-re)
+
+ ;; Macros often contain unbalanced parentheses.
+ ;; Make sure that h-end is at the textual end of
+ ;; the macro no matter what the parenthesis say.
+ (c-end-of-macro)
+ (js--ensure-cache--update-parse)
+
+ (make-js--pitem
+ :paren-depth (nth 0 parse)
+ :h-begin orig-match-start
+ :type 'macro
+ :name (list (match-string-no-properties 1))))
+
+ ;; "Prototype function" declaration
+ ((looking-at js--plain-method-re)
+ (goto-char (match-beginning 3))
+ (when (save-match-data
+ (js--forward-function-decl))
+ (forward-char)
+ (make-js--pitem
+ :paren-depth orig-depth
+ :h-begin orig-match-start
+ :type 'function
+ :name (nconc (js--split-name
+ (match-string-no-properties 1))
+ (list (match-string-no-properties 2))))))
+
+ ;; Class definition
+ ((loop with syntactic-context =
+ (js--syntactic-context-from-pstate open-items)
+ for class-style in filtered-class-styles
+ if (and (memq syntactic-context
+ (plist-get class-style :contexts))
+ (looking-at (plist-get class-style
+ :class-decl)))
+ do (goto-char (match-end 0))
+ and return
+ (make-js--pitem
+ :paren-depth orig-depth
+ :h-begin orig-match-start
+ :type class-style
+ :name (js--split-name
+ (match-string-no-properties 1))))))
+
+ do (js--ensure-cache--update-parse)
+ and do (push it open-items)
+ and do (put-text-property
+ (1- (point)) (point) 'js--pstate open-items)
+ else do (goto-char orig-match-end))
+
+ (goto-char limit)
+ (js--ensure-cache--update-parse)
+ (setq js--cache-end limit)
+ (setq js--last-parse-pos limit)
+ (setq js--state-at-last-parse-pos open-items)
+ )))))
+
+(defun js--end-of-defun-flat ()
+ "Internal helper for js--end-of-defun"
+ (loop while (js--re-search-forward "}" nil t)
+ do (js--ensure-cache)
+ if (get-text-property (1- (point)) 'js--pend)
+ if (eq 'function (js--pitem-type it))
+ return t
+ finally do (goto-char (point-max))))
+
+(defun js--end-of-defun-nested ()
+ "Internal helper for js--end-of-defun"
+ (message "test")
+ (let* (pitem
+ (this-end (save-excursion
+ (and (setq pitem (js--beginning-of-defun-nested))
+ (js--pitem-goto-h-end pitem)
+ (progn (backward-char)
+ (forward-list)
+ (point)))))
+ found)
+
+ (if (and this-end (< (point) this-end))
+ ;; We're already inside a function; just go to its end.
+ (goto-char this-end)
+
+ ;; Otherwise, go to the end of the next function...
+ (while (and (js--re-search-forward "\\_<function\\_>" nil t)
+ (not (setq found (progn
+ (goto-char (match-beginning 0))
+ (js--forward-function-decl))))))
+
+ (if found (forward-list)
+ ;; ... or eob.
+ (goto-char (point-max))))))
+
+(defun js--end-of-defun (&optional arg)
+ "Used as end-of-defun-function"
+ (setq arg (or arg 1))
+ (while (and (not (bobp)) (< arg 0))
+ (let (orig-pos (point))
+ (incf arg)
+ (js--beginning-of-defun)
+ (js--beginning-of-defun)
+ (unless (bobp)
+ (js--end-of-defun))))
+
+ (while (> arg 0)
+ (decf arg)
+ ;; look for function backward. if we're inside it, go to that
+ ;; function's end. otherwise, search for the next function's end and
+ ;; go there
+ (if js-flat-functions
+ (js--end-of-defun-flat)
+
+ ;; if we're doing nested functions, see whether we're in the
+ ;; prologue. If we are, go to the end of the function; otherwise,
+ ;; call js--end-of-defun-nested to do the real work
+ (let ((prologue-begin (js--function-prologue-beginning)))
+ (cond ((and prologue-begin (<= prologue-begin (point)))
+ (goto-char prologue-begin)
+ (re-search-forward "\\_<function")
+ (goto-char (match-beginning 0))
+ (js--forward-function-decl)
+ (forward-list))
+
+ (t (js--end-of-defun-nested)))))))
+
+(defun js--beginning-of-macro (&optional lim)
+ (let ((here (point)))
+ (save-restriction
+ (if lim (narrow-to-region lim (point-max)))
+ (beginning-of-line)
+ (while (eq (char-before (1- (point))) ?\\)
+ (forward-line -1))
+ (back-to-indentation)
+ (if (and (<= (point) here)
+ (looking-at js--opt-cpp-start))
+ t
+ (goto-char here)
+ nil))))
+
+(defun js--backward-syntactic-ws (&optional lim)
+ "Simple implementation of `c-backward-syntactic-ws'"
+ (save-restriction
+ (when lim (narrow-to-region lim (point-max)))
+
+ (let ((in-macro (save-excursion (js--beginning-of-macro)))
+ (pos (point)))
+
+ (while (progn (unless in-macro (js--beginning-of-macro))
+ (forward-comment most-negative-fixnum)
+ (/= (point)
+ (prog1
+ pos
+ (setq pos (point)))))))))
+
+(defun js--forward-syntactic-ws (&optional lim)
+ "Simple implementation of `c-forward-syntactic-ws'"
+ (save-restriction
+ (when lim (narrow-to-region (point-min) lim))
+ (let ((pos (point)))
+ (while (progn
+ (forward-comment most-positive-fixnum)
+ (when (eq (char-after) ?#)
+ (c-end-of-macro))
+ (/= (point)
+ (prog1
+ pos
+ (setq pos (point)))))))))
+
+(defun js--up-nearby-list ()
+ "Like (up-list -1), but only considers lists that end nearby"
+ (save-restriction
+ ;; Look at a very small region so our compuation time doesn't
+ ;; explode in pathological cases.
+ (narrow-to-region (max (point-min) (- (point) 500)) (point))
+ (up-list -1)))
+
+(defun js--inside-param-list-p ()
+ "Return non-nil iff point is inside a function parameter list."
+ (ignore-errors
+ (save-excursion
+ (js--up-nearby-list)
+ (and (looking-at "(")
+ (progn (forward-symbol -1)
+ (or (looking-at "function")
+ (progn (forward-symbol -1)
+ (looking-at "function"))))))))
+
+(defun js--inside-dojo-class-list-p ()
+ "Return non-nil iff point is inside a Dojo multiple-inheritance
+class block."
+ (ignore-errors
+ (save-excursion
+ (js--up-nearby-list)
+ (let ((list-begin (point)))
+ (forward-line 0)
+ (and (looking-at js--dojo-class-decl-re)
+ (goto-char (match-end 0))
+ (looking-at "\"\\s-*,\\s-*\\[")
+ (eq (match-end 0) (1+ list-begin)))))))
+
+(defun js--syntax-begin-function ()
+ (when (< js--cache-end (point))
+ (goto-char (max (point-min) js--cache-end)))
+
+ (let ((pitem))
+ (while (and (setq pitem (car (js--backward-pstate)))
+ (not (eq 0 (js--pitem-paren-depth pitem)))))
+
+ (when pitem
+ (goto-char (js--pitem-h-begin pitem )))))
+
+;;; Font Lock
+(defun js--make-framework-matcher (framework &rest regexps)
+ "Create a byte-compiled function that only matches the given
+regular expressions (that concatenation of REGEXPS) if FRAMEWORK
+is in js-enabled-frameworks"
+
+ (setq regexps (apply #'concat regexps))
+ (byte-compile
+ `(lambda (limit)
+ (when (memq (quote ,framework) js-enabled-frameworks)
+ (re-search-forward ,regexps limit t)))))
+
+(defvar js--tmp-location nil)
+(make-variable-buffer-local 'js--tmp-location)
+
+(defun js--forward-destructuring-spec (&optional func)
+ "Move forward over a destructuring spec. If FUNC is supplied,
+call it with no arguments before every variable name in the spec.
+Return true iff this was actually a spec. FUNC must preserve the
+match data."
+
+ (case (char-after)
+ (?\[
+ (forward-char)
+ (while
+ (progn
+ (forward-comment most-positive-fixnum)
+ (cond ((memq (char-after) '(?\[ ?\{))
+ (js--forward-destructuring-spec func))
+
+ ((eq (char-after) ?,)
+ (forward-char)
+ t)
+
+ ((looking-at js--name-re)
+ (and func (funcall func))
+ (goto-char (match-end 0))
+ t))))
+ (when (eq (char-after) ?\])
+ (forward-char)
+ t))
+
+ (?\{
+ (forward-char)
+ (forward-comment most-positive-fixnum)
+ (while
+ (when (looking-at js--objfield-re)
+ (goto-char (match-end 0))
+ (forward-comment most-positive-fixnum)
+ (and (cond ((memq (char-after) '(?\[ ?\{))
+ (js--forward-destructuring-spec func))
+ ((looking-at js--name-re)
+ (and func (funcall func))
+ (goto-char (match-end 0))
+ t))
+ (progn (forward-comment most-positive-fixnum)
+ (when (eq (char-after) ?\,)
+ (forward-char)
+ (forward-comment most-positive-fixnum)
+ t)))))
+ (when (eq (char-after) ?\})
+ (forward-char)
+ t))))
+
+(defun js--variable-decl-matcher (limit)
+ "Font-lock matcher for variable names in a variable
+declaration. This is a cc-mode-style matcher that *always* fails,
+from the point of view of font-lock. It applies highlighting
+directly with `font-lock-apply-higlight'."
+
+ (condition-case nil
+ (save-restriction
+ (narrow-to-region (point-min) limit)
+
+ (let ((first t))
+ (forward-comment most-positive-fixnum)
+ (while
+ (and (or first
+ (when (eq (char-after) ?,)
+ (forward-char)
+ (forward-comment most-positive-fixnum)
+ t))
+ (cond ((looking-at js--name-re)
+ (font-lock-apply-highlight
+ '(0 font-lock-variable-name-face))
+ (goto-char (match-end 0)))
+
+ ((save-excursion
+ (js--forward-destructuring-spec))
+
+ (js--forward-destructuring-spec
+ (lambda ()
+ (font-lock-apply-highlight
+ '(0 font-lock-variable-name-face)))))))
+
+ (forward-comment most-positive-fixnum)
+ (when (eq (char-after) ?=)
+ (forward-char)
+ (js--forward-expression)
+ (forward-comment most-positive-fixnum))
+
+ (setq first nil))))
+
+ ;; Conditions to handle
+ (scan-error nil)
+ (end-of-buffer nil))
+
+ ;; Matcher always "fails"
+ nil)
+
+(defconst js--font-lock-keywords-3
+ `(
+ ;; This goes before keywords-2 so it gets used preferentially
+ ;; instead of the keywords in keywords-2. Don't use override
+ ;; because that will override syntactic fontification too, which
+ ;; will fontify commented-out directives as if they weren't
+ ;; commented out.
+ ,@cpp-font-lock-keywords ; from font-lock.el
+
+ ,@js--font-lock-keywords-2
+
+ ("\\.\\(prototype\\)\\_>"
+ (1 font-lock-constant-face))
+
+ ;; Highlights class being declared, in parts
+ (js--class-decl-matcher
+ ,(concat "\\(" js--name-re "\\)\\(?:\\.\\|.*$\\)")
+ (goto-char (match-beginning 1))
+ nil
+ (1 font-lock-type-face))
+
+ ;; Highlights parent class, in parts, if available
+ (js--class-decl-matcher
+ ,(concat "\\(" js--name-re "\\)\\(?:\\.\\|.*$\\)")
+ (if (match-beginning 2)
+ (progn
+ (setq js--tmp-location (match-end 2))
+ (goto-char js--tmp-location)
+ (insert "=")
+ (goto-char (match-beginning 2)))
+ (setq js--tmp-location nil)
+ (goto-char (point-at-eol)))
+ (when js--tmp-location
+ (save-excursion
+ (goto-char js--tmp-location)
+ (delete-char 1)))
+ (1 font-lock-type-face))
+
+ ;; Highlights parent class
+ (js--class-decl-matcher
+ (2 font-lock-type-face nil t))
+
+ ;; Dojo needs its own matcher to override the string highlighting
+ (,(js--make-framework-matcher
+ 'dojo
+ "^\\s-*dojo\\.declare\\s-*(\""
+ "\\(" js--dotted-name-re "\\)"
+ "\\(?:\"\\s-*,\\s-*\\(" js--dotted-name-re "\\)\\)?")
+ (1 font-lock-type-face t)
+ (2 font-lock-type-face nil t))
+
+ ;; Match Dojo base classes. Of course Mojo has to be different
+ ;; from everything else under the sun...
+ (,(js--make-framework-matcher
+ 'dojo
+ "^\\s-*dojo\\.declare\\s-*(\""
+ "\\(" js--dotted-name-re "\\)\"\\s-*,\\s-*\\[")
+ ,(concat "[[,]\\s-*\\(" js--dotted-name-re "\\)\\s-*"
+ "\\(?:\\].*$\\)?")
+ (backward-char)
+ (end-of-line)
+ (1 font-lock-type-face))
+
+ ;; continued Dojo base-class list
+ (,(js--make-framework-matcher
+ 'dojo
+ "^\\s-*" js--dotted-name-re "\\s-*[],]")
+ ,(concat "\\(" js--dotted-name-re "\\)"
+ "\\s-*\\(?:\\].*$\\)?")
+ (if (save-excursion (backward-char)
+ (js--inside-dojo-class-list-p))
+ (forward-symbol -1)
+ (end-of-line))
+ (end-of-line)
+ (1 font-lock-type-face))
+
+ ;; variable declarations
+ ,(list
+ (concat "\\_<\\(const\\|var\\|let\\)\\_>\\|" js--basic-type-re)
+ (list #'js--variable-decl-matcher nil nil nil))
+
+ ;; class instantiation
+ ,(list
+ (concat "\\_<new\\_>\\s-+\\(" js--dotted-name-re "\\)")
+ (list 1 'font-lock-type-face))
+
+ ;; instanceof
+ ,(list
+ (concat "\\_<instanceof\\_>\\s-+\\(" js--dotted-name-re "\\)")
+ (list 1 'font-lock-type-face))
+
+ ;; formal parameters
+ ,(list
+ (concat
+ "\\_<function\\_>\\(\\s-+" js--name-re "\\)?\\s-*(\\s-*"
+ js--name-start-re)
+ (list (concat "\\(" js--name-re "\\)\\(\\s-*).*\\)?")
+ '(backward-char)
+ '(end-of-line)
+ '(1 font-lock-variable-name-face)))
+
+ ;; continued formal parameter list
+ ,(list
+ (concat
+ "^\\s-*" js--name-re "\\s-*[,)]")
+ (list js--name-re
+ '(if (save-excursion (backward-char)
+ (js--inside-param-list-p))
+ (forward-symbol -1)
+ (end-of-line))
+ '(end-of-line)
+ '(0 font-lock-variable-name-face))))
+
+ "Level three font lock.")
+
+(defun js--inside-pitem-p (pitem)
+ "Return whether point is inside the given pitem's header or body"
+ (js--ensure-cache)
+ (assert (js--pitem-h-begin pitem))
+ (assert (js--pitem-paren-depth pitem))
+
+ (and (> (point) (js--pitem-h-begin pitem))
+ (or (null (js--pitem-b-end pitem))
+ (> (js--pitem-b-end pitem) (point)))))
+
+(defun js--parse-state-at-point ()
+ "Get a list of js--pitem instances that apply to point,
+most specific first. In the worst case, the current toplevel
+instance will be returned."
+
+ (save-excursion
+ (save-restriction
+ (widen)
+ (js--ensure-cache)
+ (let* ((bound (if (eobp) (point) (1+ (point))))
+ (pstate (or (save-excursion
+ (js--backward-pstate))
+ (list js--initial-pitem))))
+
+ ;; Loop until we either hit a pitem at BOB or pitem ends after
+ ;; point (or at point if we're at eob)
+ (loop for pitem = (car pstate)
+ until (or (eq (js--pitem-type pitem)
+ 'toplevel)
+ (js--inside-pitem-p pitem))
+ do (pop pstate))
+
+ pstate))))
+
+(defun js--syntactic-context-from-pstate (pstate)
+ "Return the syntactic context corresponding to PSTATE"
+ (let ((type (js--pitem-type (car pstate))))
+ (cond ((memq type '(function macro))
+ type)
+
+ ((consp type)
+ 'class)
+
+ (t 'toplevel))))
+
+(defun js-syntactic-context ()
+ "Get the current syntactic context of point. When called
+interatively, also display a message with that context."
+ (interactive)
+ (let* ((syntactic-context (js--syntactic-context-from-pstate
+ (js--parse-state-at-point))))
+
+ (when (interactive-p)
+ (message "Syntactic context: %s" syntactic-context))
+
+ syntactic-context))
+
+(defun js--class-decl-matcher (limit)
+ "Fontifies according to js--class-styles"
+ (loop initially (js--ensure-cache limit)
+ while (re-search-forward js--quick-match-re limit t)
+ for orig-end = (match-end 0)
+ do (goto-char (match-beginning 0))
+ if (loop for style in js--class-styles
+ for decl-re = (plist-get style :class-decl)
+ if (and (memq (plist-get style :framework)
+ js-enabled-frameworks)
+ (memq (js-syntactic-context)
+ (plist-get style :contexts))
+ decl-re
+ (looking-at decl-re))
+ do (goto-char (match-end 0))
+ and return t)
+ return t
+ else do (goto-char orig-end)))
+
+(defconst js--font-lock-keywords
+ '(js--font-lock-keywords-3 js--font-lock-keywords-1
+ js--font-lock-keywords-2
+ js--font-lock-keywords-3)
+ "See `font-lock-keywords'.")
+
+;; XXX: Javascript can continue a regexp literal across lines so long
+;; as the newline is escaped with \. Account for that in the regexp
+;; below.
+(defconst js--regexp-literal
+
"[=(,:]\\(?:\\s-\\|\n\\)*\\(/\\)\\(?:\\\\/\\|[^/*]\\)\\(?:\\\\/\\|[^/]\\)*\\(/\\)"
+ "Match a regular expression literal. Match groups 1 and 2 are
+the characters forming the beginning and end of the literal")
+
+;; we want to match regular expressions only at the beginning of
+;; expressions
+(defconst js--font-lock-syntactic-keywords
+ `((,js--regexp-literal (1 "|") (2 "|")))
+ "Highlighting of regular expressions. See also the variable
+ `font-lock-keywords'.")
+
+;;; Indentation
+
+(defconst js--possibly-braceless-keyword-re
+ (js--regexp-opt-symbol
+ '("catch" "do" "else" "finally" "for" "if" "try" "while" "with"
+ "each"))
+ "Regular expression matching keywords that are optionally
+ followed by an opening brace.")
+
+(defconst js--indent-operator-re
+ (concat "[-+*/%<>=&^|?:.]\\([^-+*/]\\|$\\)\\|"
+ (js--regexp-opt-symbol '("in" "instanceof")))
+ "Regular expression matching operators that affect indentation
+ of continued expressions.")
+
+
+(defun js--looking-at-operator-p ()
+ "Return non-nil if text after point is an operator (that is not
+a comma)."
+ (save-match-data
+ (and (looking-at js--indent-operator-re)
+ (or (not (looking-at ":"))
+ (save-excursion
+ (and (js--re-search-backward "[?:{]\\|\\_<case\\_>" nil t)
+ (looking-at "?")))))))
+
+
+(defun js--continued-expression-p ()
+ "Returns non-nil if the current line continues an expression."
+ (save-excursion
+ (back-to-indentation)
+ (or (js--looking-at-operator-p)
+ (and (js--re-search-backward "\n" nil t)
+ (progn
+ (skip-chars-backward " \t")
+ (or (bobp) (backward-char))
+ (and (> (point) (point-min))
+ (save-excursion (backward-char) (not (looking-at "[/*]/")))
+ (js--looking-at-operator-p)
+ (and (progn (backward-char)
+ (not (looking-at "++\\|--\\|/[/*]"))))))))))
+
+
+(defun js--end-of-do-while-loop-p ()
+ "Returns non-nil if word after point is `while' of a do-while
+statement, else returns nil. A braceless do-while statement
+spanning several lines requires that the start of the loop is
+indented to the same column as the current line."
+ (interactive)
+ (save-excursion
+ (save-match-data
+ (when (looking-at "\\s-*\\_<while\\_>")
+ (if (save-excursion
+ (skip-chars-backward "[ \t\n]*}")
+ (looking-at "[ \t\n]*}"))
+ (save-excursion
+ (backward-list) (forward-symbol -1) (looking-at "\\_<do\\_>"))
+ (js--re-search-backward "\\_<do\\_>" (point-at-bol) t)
+ (or (looking-at "\\_<do\\_>")
+ (let ((saved-indent (current-indentation)))
+ (while (and (js--re-search-backward "^\\s-*\\_<" nil t)
+ (/= (current-indentation) saved-indent)))
+ (and (looking-at "\\s-*\\_<do\\_>")
+ (not (js--re-search-forward
+ "\\_<while\\_>" (point-at-eol) t))
+ (= (current-indentation) saved-indent)))))))))
+
+
+(defun js--ctrl-statement-indentation ()
+ "Returns the proper indentation of the current line if it
+starts the body of a control statement without braces, else
+returns nil."
+ (save-excursion
+ (back-to-indentation)
+ (when (save-excursion
+ (and (not (eq (point-at-bol) (point-min)))
+ (not (looking-at "[{]"))
+ (progn
+ (js--re-search-backward "[[:graph:]]" nil t)
+ (or (eobp) (forward-char))
+ (when (= (char-before) ?\)) (backward-list))
+ (skip-syntax-backward " ")
+ (skip-syntax-backward "w_")
+ (looking-at js--possibly-braceless-keyword-re))
+ (not (js--end-of-do-while-loop-p))))
+ (save-excursion
+ (goto-char (match-beginning 0))
+ (+ (current-indentation) js-indent-level)))))
+
+(defun js--get-c-offset (symbol anchor)
+ (let ((c-offsets-alist
+ (list (cons 'c js-comment-lineup-func))))
+ (c-get-syntactic-indentation (list (cons symbol anchor)))))
+
+(defun js--proper-indentation (parse-status)
+ "Return the proper indentation for the current line."
+ (save-excursion
+ (back-to-indentation)
+ (cond ((nth 4 parse-status)
+ (js--get-c-offset 'c (nth 8 parse-status)))
+ ((nth 8 parse-status) 0) ; inside string
+ ((js--ctrl-statement-indentation))
+ ((eq (char-after) ?#) 0)
+ ((save-excursion (js--beginning-of-macro)) 4)
+ ((nth 1 parse-status)
+ (let ((same-indent-p (looking-at
+ "[]})]\\|\\_<case\\_>\\|\\_<default\\_>"))
+ (continued-expr-p (js--continued-expression-p)))
+ (goto-char (nth 1 parse-status))
+ (if (looking-at "[({[]\\s-*\\(/[/*]\\|$\\)")
+ (progn
+ (skip-syntax-backward " ")
+ (when (= (char-before) ?\)) (backward-list))
+ (back-to-indentation)
+ (cond (same-indent-p
+ (current-column))
+ (continued-expr-p
+ (+ (current-column) (* 2 js-indent-level)
+ js-expr-indent-offset))
+ (t
+ (+ (current-column) js-indent-level))))
+ (unless same-indent-p
+ (forward-char)
+ (skip-chars-forward " \t"))
+ (current-column))))
+
+ ((js--continued-expression-p)
+ (+ js-indent-level js-expr-indent-offset))
+ (t 0))))
+
+(defun js-indent-line ()
+ "Indent the current line as JavaScript source text."
+ (interactive)
+ (save-restriction
+ (widen)
+ (let* ((parse-status
+ (save-excursion (syntax-ppss (point-at-bol))))
+ (offset (- (current-column) (current-indentation))))
+
+ (indent-line-to (js--proper-indentation parse-status))
+ (when (> offset 0) (forward-char offset)))))
+
+;;; Filling
+
+(defun js-c-fill-paragraph (&optional justify)
+ "Fill the paragraph with c-fill-paragraph"
+ (interactive "*P")
+
+ (flet ((c-forward-sws
+ (&optional limit)
+ (js--forward-syntactic-ws limit))
+
+ (c-backward-sws
+ (&optional limit)
+ (js--backward-syntactic-ws limit))
+
+ (c-beginning-of-macro
+ (&optional limit)
+ (js--beginning-of-macro limit)))
+
+ (let ((fill-paragraph-function 'c-fill-paragraph))
+ (c-fill-paragraph justify))))
+
+;;; Type database and Imenu
+
+;; We maintain a cache of semantic information, i.e., the classes and
+;; functions we've encountered so far. In order to avoid having to
+;; re-parse the buffer on every change, we cache the parse state at
+;; each interesting point in the buffer. Each parse state is a
+;; modified copy of the previous one, or in the case of the first
+;; parse state, the empty state.
+;;
+;; The parse state itself is just a stack of js--pitem
+;; instances. It starts off containing one element that is never
+;; closed, that is initially js--initial-pitem.
+;;
+
+
+(defun js--pitem-format (pitem)
+ (let ((name (js--pitem-name pitem))
+ (type (js--pitem-type pitem)))
+
+ (format "name:%S type:%S"
+ name
+ (if (atom type)
+ type
+ (plist-get type :name)))))
+
+(defun js--make-merged-item (item child name-parts)
+ "Internal helper for js--splice-into-items. Return a new
+item that is the result of merging CHILD into ITEM. NAME-PARTS is
+a list of parts of the name of CHILD that we haven't consumed
+yet."
+
+ (js--debug "js--make-merged-item: {%s} into {%s}"
+ (js--pitem-format child)
+ (js--pitem-format item))
+
+ ;; If the item we're merging into isn't a class, make it into one
+ (unless (consp (js--pitem-type item))
+ (js--debug "js--make-merged-item: changing dest into class")
+ (setq item (make-js--pitem
+ :children (list item)
+
+ ;; Use the child's class-style if it's available
+ :type (if (atom (js--pitem-type child))
+ js--dummy-class-style
+ (js--pitem-type child))
+
+ :name (js--pitem-strname item))))
+
+ ;; Now we can merge either a function or a class into a class
+ (cons (cond
+ ((cdr name-parts)
+ (js--debug "js--make-merged-item: recursing")
+ ;; if we have more name-parts to go before we get to the
+ ;; bottom of the class hierarchy, call the merger
+ ;; recursively
+ (js--splice-into-items (car item) child
+ (cdr name-parts)))
+
+ ((atom (js--pitem-type child))
+ (js--debug "js--make-merged-item: straight merge")
+ ;; Not merging a class, but something else, so just prepend
+ ;; it
+ (cons child (car item)))
+
+ (t
+ ;; Otherwise, merge the new child's items into those
+ ;; of the new class
+ (js--debug "js--make-merged-item: merging class contents")
+ (append (car child) (car item))))
+ (cdr item)))
+
+(defun js--pitem-strname (pitem)
+ "Last part of the name of PITEM as a string or symbol"
+ (let ((name (js--pitem-name pitem)))
+ (if (consp name)
+ (car (last name))
+ name)))
+
+(defun js--splice-into-items (items child name-parts)
+ "Non-destructively inserts CHILD into the item list ITEMS in
+the proper place as given by NAME-PARTS. If a class doesn't
+exist in the tree, create it. Return the new items list.
+NAME-PARTS is a list of strings given the broken-down class
+name of the item to insert."
+
+ (let ((top-name (car name-parts))
+ (item-ptr items)
+ new-items last-new-item new-cons item)
+
+ (js--debug "js--splice-into-items: name-parts: %S items:%S"
+ name-parts
+ (mapcar #'js--pitem-name items))
+
+ (assert (stringp top-name))
+ (assert (> (length top-name) 0))
+
+ ;; If top-name isn't found in items, then we build a copy of items
+ ;; and throw it away. But that's okay, since most of the time, we
+ ;; *will* find an instance.
+
+ (while (and item-ptr
+ (cond ((equal (js--pitem-strname (car item-ptr)) top-name)
+ ;; Okay, we found an entry with the right name. Splice
+ ;; the merged item into the list...
+ (setq new-cons (cons (js--make-merged-item
+ (car item-ptr) child
+ name-parts)
+ (cdr item-ptr)))
+
+ (if last-new-item
+ (setcdr last-new-item new-cons)
+ (setq new-items new-cons))
+
+ ;; ...and terminate the loop
+ nil)
+
+ (t
+ ;; Otherwise, copy the current cons and move onto the
+ ;; text. This is tricky; we keep track of the tail of
+ ;; the list that begins with new-items in
+ ;; last-new-item.
+ (setq new-cons (cons (car item-ptr) nil))
+ (if last-new-item
+ (setcdr last-new-item new-cons)
+ (setq new-items new-cons))
+ (setq last-new-item new-cons)
+
+ ;; Go to the next cell in items
+ (setq item-ptr (cdr item-ptr))))))
+
+ (if item-ptr
+ ;; Yay! We stopped because we found something, not because
+ ;; we ran out of items to search. Just return the new
+ ;; list.
+ (progn
+ (js--debug "search succeeded: %S" name-parts)
+ new-items)
+
+ ;; We didn't find anything. If the child is a class and we don't
+ ;; have any classes to drill down into, just push that class;
+ ;; otherwise, make a fake class and carry on.
+ (js--debug "search failed: %S" name-parts)
+ (cons (if (cdr name-parts)
+ ;; We have name-parts left to process. Make a fake
+ ;; class for this particular part...
+ (make-js--pitem
+ ;; ...and recursively digest the rest of the name
+ :children (js--splice-into-items
+ nil child (cdr name-parts))
+ :type js--dummy-class-style
+ :name top-name)
+
+ ;; Otherwise, this is the only name we have, so stick
+ ;; the item on the front of the list
+ child)
+ items))))
+
+(defun js--pitem-add-child (pitem child)
+ "Copy js--pitem PITEM and while copying, push CHILD onto
+its list of children."
+
+ (assert (integerp (js--pitem-h-begin child)))
+ (assert (if (consp (js--pitem-name child))
+ (loop for part in (js--pitem-name child)
+ always (stringp part))
+ t))
+
+ ;; This trick works because we know (based on our defstructs) that
+ ;; the child list is always the first element, and so the second
+ ;; element and beyond can be shared when we make our "copy".
+ (cons
+
+ (let ((name (js--pitem-name child))
+ (type (js--pitem-type child)))
+
+ (cond ((cdr-safe name) ; true if a list of at least two elements
+ ;; Use slow path because we need class lookup
+ (js--splice-into-items (car pitem) child name))
+
+ ((and (consp type)
+ (plist-get type :prototype))
+
+ ;; Use slow path because we need class merging. We know
+ ;; name is a list here because down in
+ ;; `js--ensure-cache', we made sure to only add
+ ;; class entries with lists for :name
+ (assert (consp name))
+ (js--splice-into-items (car pitem) child name))
+
+ (t
+ ;; Fast path
+ (cons child (car pitem)))))
+
+ (cdr pitem)))
+
+(defun js--maybe-make-marker (location)
+ "Make LOCATION into a marker if imenu-use-markers"
+ (if imenu-use-markers
+ (set-marker (make-marker) location)
+ location))
+
+(defun js--pitems-to-imenu (pitems unknown-ctr)
+ "Convert list of pitems PITEMS to imenu format"
+
+ (let (imenu-items pitem pitem-type pitem-name subitems)
+
+ (while (setq pitem (pop pitems))
+ (setq pitem-type (js--pitem-type pitem))
+ (setq pitem-name (js--pitem-strname pitem))
+ (when (eq pitem-name t)
+ (setq pitem-name (format "[unknown %s]"
+ (incf (car unknown-ctr)))))
+
+ (cond
+ ((memq pitem-type '(function macro))
+ (assert (integerp (js--pitem-h-begin pitem)))
+ (push (cons pitem-name
+ (js--maybe-make-marker
+ (js--pitem-h-begin pitem)))
+ imenu-items))
+
+ ((consp pitem-type) ; class definition
+ (setq subitems (js--pitems-to-imenu
+ (js--pitem-children pitem)
+ unknown-ctr))
+ (cond (subitems
+ (push (cons pitem-name subitems)
+ imenu-items))
+
+ ((js--pitem-h-begin pitem)
+ (assert (integerp (js--pitem-h-begin pitem)))
+ (setq subitems (list
+ (cons "[empty]"
+ (js--maybe-make-marker
+ (js--pitem-h-begin pitem)))))
+ (push (cons pitem-name subitems)
+ imenu-items))))
+
+ (t (error "Unknown item type: %S" pitem-type))))
+
+ imenu-items))
+
+(defun js--imenu-create-index ()
+ "Creates an imenu index for the current buffer"
+ (save-excursion
+ (save-restriction
+ (widen)
+ (goto-char (point-max))
+ (js--ensure-cache)
+ (assert (or (= (point-min) (point-max))
+ (eq js--last-parse-pos (point))))
+ (when js--last-parse-pos
+ (let ((state js--state-at-last-parse-pos)
+ (unknown-ctr (cons -1 nil)))
+
+ ;; Make sure everything is closed
+ (while (cdr state)
+ (setq state
+ (cons (js--pitem-add-child (second state) (car state))
+ (cddr state))))
+
+ (assert (= (length state) 1))
+
+ ;; Convert the new-finalized state into what imenu expects
+ (js--pitems-to-imenu
+ (car (js--pitem-children state))
+ unknown-ctr))))))
+
+(defun js--which-func-joiner (parts)
+ (mapconcat #'identity parts "."))
+
+(defun js--imenu-to-flat (items prefix symbols)
+ (loop for item in items
+ if (imenu--subalist-p item)
+ do (js--imenu-to-flat
+ (cdr item) (concat prefix (car item) ".")
+ symbols)
+ else
+ do (let* ((name (concat prefix (car item)))
+ (name2 name)
+ (ctr 0))
+
+ (while (gethash name2 symbols)
+ (setq name2 (format "%s<%d>" name (incf ctr))))
+
+ (puthash name2 (cdr item) symbols))))
+
+(defun js--get-all-known-symbols ()
+ "Get a hash table of all relevant Javascript symbols across all
+js-mode buffers. Each key is the name of a symbol (possibly
+disambiguated with <N>, where N > 1), and each value is a marker
+giving the location of that symbol."
+ (loop with symbols = (make-hash-table :test 'equal)
+ with imenu-use-markers = t
+ for buffer being the buffers
+ for imenu-index = (with-current-buffer buffer
+ (when (eq major-mode 'js-mode)
+ (js--imenu-create-index)))
+ do (js--imenu-to-flat imenu-index "" symbols)
+ finally return symbols))
+
+(defvar js--symbol-history nil
+ "History of entered Javascript symbols")
+
+(defun js--read-symbol (symbols-table prompt &optional initial-input)
+ "Read a symbol from SYMBOLS-TABLE, which is a hash table like
+the one from `js--get-all-known-symbols'. Return value is a
+cons of (SYMBOL-NAME . LOCATION), where SYMBOL-NAME is a string
+and LOCATION is a marker.
+
+Prompt is PROMPT.
+
+If INITIAL-INPUT is not nil, use it as the initial input"
+
+ (unless ido-mode
+ (ido-mode t)
+ (ido-mode nil))
+
+ (let ((choice (ido-completing-read
+ prompt
+ (loop for key being the hash-keys of symbols-table
+ collect key)
+ nil t initial-input 'js--symbol-history)))
+ (cons choice (gethash choice symbols-table))))
+
+(defun js--guess-symbol-at-point ()
+ (let ((bounds (bounds-of-thing-at-point 'symbol)))
+ (when bounds
+ (save-excursion
+ (goto-char (car bounds))
+ (when (eq (char-before) ?.)
+ (backward-char)
+ (setf (car bounds) (point))))
+ (buffer-substring (car bounds) (cdr bounds)))))
+
+(defun js-find-symbol (&optional arg)
+ "Jump to a Javascript symbol we read in from the user. With
+prefix argument, restrict symbols to those from the current
+buffer. Pushes a mark onto the tag ring just like `find-tag'."
+
+ (interactive "P")
+ (let (symbols marker)
+ (if (not arg)
+ (setq symbols (js--get-all-known-symbols))
+ (setq symbols (make-hash-table :test 'equal))
+ (js--imenu-to-flat (js--imenu-create-index)
+ "" symbols))
+
+ (setq marker (cdr (js--read-symbol
+ symbols "Jump to: "
+ (js--guess-symbol-at-point))))
+
+ (ring-insert find-tag-marker-ring (point-marker))
+ (switch-to-buffer (marker-buffer marker))
+ (push-mark)
+ (goto-char marker)))
+
+;;; MozRepl integration
+
+(put 'js-moz-bad-rpc 'error-conditions '(error timeout))
+(put 'js-moz-bad-rpc 'error-message "Mozilla RPC Error")
+
+(put 'js-js-error 'error-conditions '(error js-error))
+(put 'js-js-error 'error-message "Javascript Error")
+
+(defun js--wait-for-matching-output
+ (process regexp timeout &optional start)
+ "Wait TIMEOUT seconds for PROCESS to output something that
+matches REGEXP. On timeout, return nil. On success, return t with
+match data set. If START is non-nil, look for output starting
+from START. Otherwise, use the current value of `process-mark'."
+ (with-current-buffer (process-buffer process)
+ (loop with start-pos = (or start
+ (marker-position (process-mark process)))
+ with end-time = (+ (float-time) timeout)
+ for time-left = (- end-time (float-time))
+ do (goto-char (point-max))
+ if (looking-back regexp start-pos) return t
+ while (> time-left 0)
+ do (accept-process-output process time-left nil t)
+ do (goto-char (process-mark process))
+ finally do (signal
+ 'js-moz-bad-rpc
+ (list (format "Timed out waiting for output matching %S"
regexp))))))
+
+(defstruct js--js-handle
+ ;; Integer, mirrors the value we see in JS
+ (id nil :read-only t)
+
+ ;; Process to which this thing belongs
+ (process nil :read-only t))
+
+(defun js--js-handle-expired-p (x)
+ (not (eq (js--js-handle-process x)
+ (inferior-moz-process))))
+
+(defvar js--js-references nil
+ "Maps Elisp Javascript proxy objects to their Javascript IDs.")
+
+(defvar js--js-process nil
+ "The last MozRepl process object we saw")
+
+(defvar js--js-gc-idle-timer nil
+ "Idle timer for cleaning up JS object references")
+
+(defvar js--js-last-gcs-done nil
+ "Last number of gcs we GCed with")
+
+(defconst js--moz-interactor
+ (replace-regexp-in-string
+ "[ \n]+" " "
+ ; */" Make Emacs happy
+"(function(repl) {
+ repl.defineInteractor('js', {
+ onStart: function onStart(repl) {
+ if(!repl._jsObjects) {
+ repl._jsObjects = {};
+ repl._jsLastID = 0;
+ repl._jsGC = this._jsGC;
+ }
+ this._input = '';
+ },
+
+ _jsGC: function _jsGC(ids_in_use) {
+ var objects = this._jsObjects;
+ var keys = [];
+ var num_freed = 0;
+
+ for(var pn in objects) {
+ keys.push(Number(pn));
+ }
+
+ keys.sort(function(x, y) x - y);
+ ids_in_use.sort(function(x, y) x - y);
+ var i = 0;
+ var j = 0;
+
+ while(i < ids_in_use.length && j < keys.length) {
+ var id = ids_in_use[i++];
+ while(j < keys.length && keys[j] !== id) {
+ var k_id = keys[j++];
+ delete objects[k_id];
+ ++num_freed;
+ }
+ ++j;
+ }
+
+ while(j < keys.length) {
+ var k_id = keys[j++];
+ delete objects[k_id];
+ ++num_freed;
+ }
+
+ return num_freed;
+ },
+
+ _mkArray: function _mkArray() {
+ var result = [];
+ for(var i = 0; i < arguments.length; ++i) {
+ result.push(arguments[i]);
+ }
+ return result;
+ },
+
+ _parsePropDescriptor: function _parsePropDescriptor(parts) {
+ if(typeof parts === 'string') {
+ parts = [ parts ];
+ }
+
+ var obj = parts[0];
+ var start = 1;
+
+ if(typeof obj === 'string') {
+ obj = window;
+ start = 0;
+ } else if(parts.length < 2) {
+ throw new Error('expected at least 2 arguments');
+ }
+
+ for(var i = start; i < parts.length - 1; ++i) {
+ obj = obj[parts[i]];
+ }
+
+ return [obj, parts[parts.length - 1]];
+ },
+
+ _getProp: function _getProp(/*...*/) {
+ if(arguments.length === 0) {
+ throw new Error('no arguments supplied to getprop');
+ }
+
+ if(arguments.length === 1 &&
+ (typeof arguments[0]) !== 'string')
+ {
+ return arguments[0];
+ }
+
+ var [obj, propname] = this._parsePropDescriptor(arguments);
+ return obj[propname];
+ },
+
+ _putProp: function _putProp(properties, value) {
+ var [obj, propname] = this._parsePropDescriptor(properties);
+ obj[propname] = value;
+ },
+
+ _delProp: function _delProp(propname) {
+ var [obj, propname] = this._parsePropDescriptor(arguments);
+ delete obj[propname];
+ },
+
+ _typeOf: function _typeOf(thing) {
+ return typeof thing;
+ },
+
+ _callNew: function(constructor) {
+ if(typeof constructor === 'string')
+ {
+ constructor = window[constructor];
+ } else if(constructor.length === 1 &&
+ typeof constructor[0] !== 'string')
+ {
+ constructor = constructor[0];
+ } else {
+ var [obj,propname] = this._parsePropDescriptor(constructor);
+ constructor = obj[propname];
+ }
+
+ /* Hacky, but should be robust */
+ var s = 'new constructor(';
+ for(var i = 1; i < arguments.length; ++i) {
+ if(i != 1) {
+ s += ',';
+ }
+
+ s += 'arguments[' + i + ']';
+ }
+
+ s += ')';
+ return eval(s);
+ },
+
+ _callEval: function(thisobj, js) {
+ return eval.call(thisobj, js);
+ },
+
+ getPrompt: function getPrompt(repl) {
+ return 'EVAL>'
+ },
+
+ _lookupObject: function _lookupObject(repl, id) {
+ if(typeof id === 'string') {
+ switch(id) {
+ case 'global':
+ return window;
+ case 'nil':
+ return null;
+ case 't':
+ return true;
+ case 'false':
+ return false;
+ case 'undefined':
+ return undefined;
+ case 'repl':
+ return repl;
+ case 'interactor':
+ return this;
+ case 'NaN':
+ return NaN;
+ case 'Infinity':
+ return Infinity;
+ case '-Infinity':
+ return -Infinity;
+ default:
+ throw new Error('No object with special id:' + id);
+ }
+ }
+
+ var ret = repl._jsObjects[id];
+ if(ret === undefined) {
+ throw new Error('No object with id:' + id + '(' + typeof id + ')');
+ }
+ return ret;
+ },
+
+ _findOrAllocateObject: function _findOrAllocateObject(repl, value) {
+ if(typeof value !== 'object' && typeof value !== 'function') {
+ throw new Error('_findOrAllocateObject called on non-object('
+ + typeof(value) + '): '
+ + value)
+ }
+
+ for(var id in repl._jsObjects) {
+ id = Number(id);
+ var obj = repl._jsObjects[id];
+ if(obj === value) {
+ return id;
+ }
+ }
+
+ var id = ++repl._jsLastID;
+ repl._jsObjects[id] = value;
+ return id;
+ },
+
+ _fixupList: function _fixupList(repl, list) {
+ for(var i = 0; i < list.length; ++i) {
+ if(list[i] instanceof Array) {
+ this._fixupList(repl, list[i]);
+ } else if(typeof list[i] === 'object') {
+ var obj = list[i];
+ if(obj.funcall) {
+ var parts = obj.funcall;
+ this._fixupList(repl, parts);
+ var [thisobj, func] = this._parseFunc(parts[0]);
+ list[i] = func.apply(thisobj, parts.slice(1));
+ } else if(obj.objid) {
+ list[i] = this._lookupObject(repl, obj.objid);
+ } else {
+ throw new Error('Unknown object type: ' + obj.toSource());
+ }
+ }
+ }
+ },
+
+ _parseFunc: function(func) {
+ var thisobj = null;
+
+ if(typeof func === 'string') {
+ func = window[func];
+ } else if(func instanceof Array) {
+ if(func.length === 1 && typeof func[0] !== 'string') {
+ func = func[0];
+ } else {
+ [thisobj, func] = this._parsePropDescriptor(func);
+ func = thisobj[func];
+ }
+ }
+
+ return [thisobj,func];
+ },
+
+ _encodeReturn: function(value, array_as_mv) {
+ var ret;
+
+ if(value === null) {
+ ret = ['special', 'null'];
+ } else if(value === true) {
+ ret = ['special', 'true'];
+ } else if(value === false) {
+ ret = ['special', 'false'];
+ } else if(value === undefined) {
+ ret = ['special', 'undefined'];
+ } else if(typeof value === 'number') {
+ if(isNaN(value)) {
+ ret = ['special', 'NaN'];
+ } else if(value === Infinity) {
+ ret = ['special', 'Infinity'];
+ } else if(value === -Infinity) {
+ ret = ['special', '-Infinity'];
+ } else {
+ ret = ['atom', value];
+ }
+ } else if(typeof value === 'string') {
+ ret = ['atom', value];
+ } else if(array_as_mv && value instanceof Array) {
+ ret = ['array', value.map(this._encodeReturn, this)];
+ } else {
+ ret = ['objid', this._findOrAllocateObject(repl, value)];
+ }
+
+ return ret;
+ },
+
+ _handleInputLine: function _handleInputLine(repl, line) {
+ var ret;
+ var array_as_mv = false;
+
+ try {
+ if(line[0] === '*') {
+ array_as_mv = true;
+ line = line.substring(1);
+ }
+ var parts = eval(line);
+ this._fixupList(repl, parts);
+ var [thisobj, func] = this._parseFunc(parts[0]);
+ ret = this._encodeReturn(
+ func.apply(thisobj, parts.slice(1)),
+ array_as_mv);
+ } catch(x) {
+ ret = ['error', x.toString() ];
+ }
+
+ var JSON =
Components.classes['@mozilla.org/dom/json;1'].createInstance(Components.interfaces.nsIJSON);
+ repl.print(JSON.encode(ret));
+ repl._prompt();
+ },
+
+ handleInput: function handleInput(repl, chunk) {
+ this._input += chunk;
+ var match, line;
+ while(match = this._input.match(/.*\\n/)) {
+ line = match[0];
+
+ if(line === 'EXIT\\n') {
+ repl.popInteractor();
+ repl._prompt();
+ return;
+ }
+
+ this._input = this._input.substring(line.length);
+ this._handleInputLine(repl, line);
+ }
+ }
+ });
+})
+")
+
+ "String to set MozRepl up into a simple-minded evaluation mode")
+
+(defun js--js-encode-value (x)
+ "Marshall the given value for JS. Strings and numbers get
+JSON-encoded. Lists (including nil) are made into Javascript
+array literals and their contents encoded with
+js--js-encode-value."
+
+ (cond ((stringp x) (json-encode-string x))
+ ((numberp x) (json-encode-number x))
+ ((symbolp x) (format "{objid:%S}" (symbol-name x)))
+ ((js--js-handle-p x)
+
+ (when (js--js-handle-expired-p x)
+ (error "Stale JS handle"))
+
+ (format "{objid:%s}" (js--js-handle-id x)))
+
+ ((sequencep x)
+ (if (eq (car-safe x) 'js--funcall)
+ (format "{funcall:[%s]}"
+ (mapconcat #'js--js-encode-value (cdr x) ","))
+ (concat
+ "[" (mapconcat #'js--js-encode-value x ",") "]")))
+ (t
+ (error "Unrecognized item: %S" x))))
+
+(defconst js--js-prompt-regexp "\\(repl[0-9]*\\)> $")
+(defconst js--js-repl-prompt-regexp "^EVAL>$")
+(defvar js--js-repl-depth 0)
+
+(defun js--js-wait-for-eval-prompt ()
+ (js--wait-for-matching-output
+ (inferior-moz-process)
+ js--js-repl-prompt-regexp js-js-timeout
+
+ ;; start matching against the beginning of the line in
+ ;; order to catch a prompt that's only partially arrived
+ (save-excursion (forward-line 0) (point))))
+
+(defun js--js-enter-repl ()
+ (inferior-moz-process) ; called for side-effect
+ (with-current-buffer inferior-moz-buffer
+ (goto-char (point-max))
+
+ ;; Do some initialization the first time we see a process
+ (unless (eq (inferior-moz-process) js--js-process)
+ (setq js--js-process (inferior-moz-process))
+ (setq js--js-references (make-hash-table :test 'eq :weakness t))
+ (setq js--js-repl-depth 0)
+
+ ;; Send interactor definition
+ (comint-send-string js--js-process js--moz-interactor)
+ (comint-send-string js--js-process
+ (concat "(" moz-repl-name ")\n"))
+ (js--wait-for-matching-output
+ (inferior-moz-process) js--js-prompt-regexp
+ js-js-timeout))
+
+ ;; Sanity check
+ (when (looking-back js--js-prompt-regexp
+ (save-excursion (forward-line 0) (point)))
+ (setq js--js-repl-depth 0))
+
+ (if (> js--js-repl-depth 0)
+ ;; If js--js-repl-depth > 0, we *should* be seeing an
+ ;; EVAL> prompt. If we don't, give Mozilla a chance to catch
+ ;; up with us.
+ (js--js-wait-for-eval-prompt)
+
+ ;; Otherwise, tell Mozilla to enter the interactor mode
+ (insert (match-string-no-properties 1)
+ ".pushInteractor('js')")
+ (comint-send-input nil t)
+ (js--wait-for-matching-output
+ (inferior-moz-process) js--js-repl-prompt-regexp
+ js-js-timeout))
+
+ (incf js--js-repl-depth)))
+
+(defun js--js-leave-repl ()
+ (assert (> js--js-repl-depth 0))
+ (when (= 0 (decf js--js-repl-depth))
+ (with-current-buffer inferior-moz-buffer
+ (goto-char (point-max))
+ (js--js-wait-for-eval-prompt)
+ (insert "EXIT")
+ (comint-send-input nil t)
+ (js--wait-for-matching-output
+ (inferior-moz-process) js--js-prompt-regexp
+ js-js-timeout))))
+
+(defsubst js--js-not (value)
+ (memq value '(nil false undefined)))
+
+(defsubst js--js-true (value)
+ (not (js--js-not value)))
+
+(eval-and-compile
+ (defun js--optimize-arglist (arglist)
+ "Convert immediate js< and js! references to deferred ones"
+ (loop for item in arglist
+ if (eq (car-safe item) 'js<)
+ collect (append (list 'list ''js--funcall
+ '(list 'interactor "_getProp"))
+ (js--optimize-arglist (cdr item)))
+ else if (eq (car-safe item) 'js>)
+ collect (append (list 'list ''js--funcall
+ '(list 'interactor "_putProp"))
+
+ (if (atom (cadr item))
+ (list (cadr item))
+ (list
+ (append
+ (list 'list ''js--funcall
+ '(list 'interactor "_mkArray"))
+ (js--optimize-arglist (cadr item)))))
+ (js--optimize-arglist (cddr item)))
+ else if (eq (car-safe item) 'js!)
+ collect (destructuring-bind (ignored function &rest body) item
+ (append (list 'list ''js--funcall
+ (if (consp function)
+ (cons 'list
+ (js--optimize-arglist function))
+ function))
+ (js--optimize-arglist body)))
+ else
+ collect item)))
+
+(defmacro js--js-get-service (class-name interface-name)
+ `(js! ("Components" "classes" ,class-name "getService")
+ (js< "Components" "interfaces" ,interface-name)))
+
+(defmacro js--js-create-instance (class-name interface-name)
+ `(js! ("Components" "classes" ,class-name "createInstance")
+ (js< "Components" "interfaces" ,interface-name)))
+
+(defmacro js--js-qi (object interface-name)
+ `(js! (,object "QueryInterface")
+ (js< "Components" "interfaces" ,interface-name)))
+
+(defmacro with-js (&rest forms)
+ "Runs FORMS with the Mozilla repl set up for js commands.
+Inside the lexical scope of `with-js', `js?', `js!',
+`js-new', `js-eval', `js-list', `js<', `js>', `js-get-service',
+`js-create-instance', and `js-qi' are defined."
+
+ `(progn
+ (js--js-enter-repl)
+ (unwind-protect
+ (macrolet ((js? (&rest body) `(js--js-true ,@body))
+ (js! (function &rest body)
+ `(js--js-funcall
+ ,(if (consp function)
+ (cons 'list
+ (js--optimize-arglist function))
+ function)
+ ,@(js--optimize-arglist body)))
+
+ (js-new (function &rest body)
+ `(js--js-new
+ ,(if (consp function)
+ (cons 'list
+ (js--optimize-arglist function))
+ function)
+ ,@body))
+
+ (js-eval (thisobj js)
+ `(js--js-eval
+ ,@(js--optimize-arglist
+ (list thisobj js))))
+
+ (js-list (&rest args)
+ `(js--js-list
+ ,@(js--optimize-arglist args)))
+
+ (js-get-service (&rest args)
+ `(js--js-get-service
+ ,@(js--optimize-arglist args)))
+
+ (js-create-instance (&rest args)
+ `(js--js-create-instance
+ ,@(js--optimize-arglist args)))
+
+ (js-qi (&rest args)
+ `(js--js-qi
+ ,@(js--optimize-arglist args)))
+
+ (js< (&rest body) `(js--js-get
+ ,@(js--optimize-arglist body)))
+ (js> (props value)
+ `(js--js-funcall
+ '(interactor "_putProp")
+ ,(if (consp props)
+ (cons 'list
+ (js--optimize-arglist props))
+ props)
+ ,@(js--optimize-arglist (list value))
+ ))
+ (js-handle? (arg) `(js--js-handle-p ,arg)))
+ ,@forms)
+ (js--js-leave-repl))))
+
+(defvar js--js-array-as-list nil
+"If bound to t and a function returns an Array, return the
+elements of that Array as a list instead of returning the whole
+Array as a JS symbol" )
+
+(defun js--js-decode-retval (result)
+ (ecase (intern (first result))
+ (atom (second result))
+ (special (intern (second result)))
+ (array
+ (mapcar #'js--js-decode-retval (second result)))
+ (objid
+ (or (gethash (second result)
+ js--js-references)
+ (puthash (second result)
+ (make-js--js-handle
+ :id (second result)
+ :process (inferior-moz-process))
+ js--js-references)))
+
+ (error (signal 'js-js-error (list (second result))))))
+
+(defun js--js-funcall (function &rest arguments)
+ "Call the Mozilla function FUNCTION with arguments ARGUMENTS.
+If function is a string, look it up as a property on the global
+object and use the global object for `this'; if FUNCTION is a
+list with one element, use that element as the function with the
+global object for `this', except that if that single element is a
+string, look it up on the global object. If FUNCTION is a list
+with more than one argument, use the list up to the last value as
+a property descriptor and the last argument as a function."
+
+ (with-js
+ (let ((argstr (js--js-encode-value
+ (cons function arguments))))
+
+ (with-current-buffer inferior-moz-buffer
+ ;; Actual funcall
+ (when js--js-array-as-list
+ (insert "*"))
+ (insert argstr)
+ (comint-send-input nil t)
+ (js--wait-for-matching-output
+ (inferior-moz-process) "EVAL>"
+ js-js-timeout)
+ (goto-char comint-last-input-end)
+
+ ;; Read the result
+ (let* ((json-array-type 'list)
+ (result (prog1 (json-read)
+ (goto-char (point-max)))))
+ (js--js-decode-retval result))))))
+
+(defun js--js-new (constructor &rest arguments)
+ "Call CONSTRUCTOR as a constructor (as with new), with the
+given arguments ARGUMENTS. CONSTRUCTOR is a JS handle, a string,
+or a list of these things."
+
+ (apply #'js--js-funcall
+ '(interactor "_callNew")
+ constructor arguments))
+
+(defun js--js-eval (thisobj js)
+ (js--js-funcall '(interactor "_callEval") thisobj js))
+
+(defun js--js-list (&rest arguments)
+ "Return a Lisp array that is the result of evaluating each of
+ the elements of ARGUMENTS"
+
+ (let ((js--js-array-as-list t))
+ (apply #'js--js-funcall '(interactor "_mkArray")
+ arguments)))
+
+(defun js--js-get (&rest props)
+ (apply #'js--js-funcall '(interactor "_getProp") props))
+
+(defun js--js-put (props value)
+ (js--js-funcall '(interactor "_putProp") props value))
+
+(defun js-gc (&optional force)
+ "Tell the repl about any objects we don't reference anymore.
+With argument, run even if no intervening GC has happened."
+ (interactive)
+
+ (when force
+ (setq js--js-last-gcs-done nil))
+
+ (let ((this-gcs-done gcs-done) keys num)
+ (when (and js--js-references
+ (boundp 'inferior-moz-buffer)
+ (buffer-live-p inferior-moz-buffer)
+
+ ;; Don't bother running unless we've had an intervening
+ ;; garbage collection; without a gc, nothing is deleted
+ ;; from the weak hash table, so it's pointless telling
+ ;; MozRepl about that references we still hold
+ (not (eq js--js-last-gcs-done this-gcs-done))
+
+ ;; Are we looking at a normal prompt? Make sure not to
+ ;; interrupt the user if he's doing something
+ (with-current-buffer inferior-moz-buffer
+ (save-excursion
+ (goto-char (point-max))
+ (looking-back js--js-prompt-regexp
+ (save-excursion (forward-line 0) (point))))))
+
+ (setq keys (loop for x being the hash-keys
+ of js--js-references
+ collect x))
+ (setq num (js--js-funcall '(repl "_jsGC") (or keys [])))
+
+ (setq js--js-last-gcs-done this-gcs-done)
+ (when (interactive-p)
+ (message "Cleaned %s entries" num))
+
+ num)))
+
+(run-with-idle-timer 30 t #'js-gc)
+
+(defun js-eval (js)
+ "Evaluate the Javascript contained in JS and return the
+JSON-decoded result. eval must be called using this function
+because it is special to the Javascript interpreter."
+ (interactive "MJavascript to evaluate: ")
+ (with-js
+ (let* ((content-window (js--js-content-window
+ (js--get-js-context)))
+ (result (js-eval content-window js)))
+
+ (when (interactive-p)
+ (message "%s" (js! "String" result)))
+ result)))
+
+(defun js--get-tabs ()
+ "Enumerate all the contexts available. Each one is a list:
+
+ The list is (TITLE URL BROWSER TAB TABBROWSER) for content documents
+ The list is (TITLE URL WINDOW) for windows
+
+ All tabs of a given window are grouped together. The most
+ recent window is first. Within each window, the tabs are
+ returned left-to-right.
+"
+ (with-js
+ (let (windows)
+
+ (loop with window-mediator = (js! ("Components" "classes"
+
"@mozilla.org/appshell/window-mediator;1"
+ "getService")
+ (js< "Components" "interfaces"
+ "nsIWindowMediator"))
+ with enumerator = (js! (window-mediator "getEnumerator") nil)
+
+ while (js? (js! (enumerator "hasMoreElements")))
+ for window = (js! (enumerator "getNext"))
+ for window-info = (js-list window
+ (js< window "document" "title")
+ (js! (window "location" "toString"))
+ (js< window "closed")
+ (js< window "windowState"))
+
+ unless (or (js? (fourth window-info))
+ (eq (fifth window-info) 2))
+ do (push window-info windows))
+
+ (loop for window-info in windows
+ for window = (first window-info)
+ collect (list (second window-info)
+ (third window-info)
+ window)
+
+ for gbrowser = (js< window "gBrowser")
+ if (js-handle? gbrowser)
+ nconc (loop
+ for x below (js< gbrowser "browsers" "length")
+ collect (js-list (js< gbrowser
+ "browsers"
+ x
+ "contentDocument"
+ "title")
+
+ (js! (gbrowser
+ "browsers"
+ x
+ "contentWindow"
+ "location"
+ "toString"))
+ (js< gbrowser
+ "browsers"
+ x)
+
+ (js! (gbrowser
+ "tabContainer"
+ "childNodes"
+ "item")
+ x)
+
+ gbrowser))))))
+
+(defvar js-read-tab-history nil)
+
+(defun js--read-tab (prompt)
+ "Read a Mozilla tab with prompt PROMPT. Return a cons of (TYPE . OBJECT).
+TYPE is either 'window or 'tab, and OBJECT is a Javascript handle
+to a ChromeWindow or a browser, respectively."
+
+ ;; Prime IDO
+ (unless ido-mode
+ (ido-mode t)
+ (ido-mode nil))
+
+ (with-js
+ (lexical-let ((tabs (js--get-tabs)) selected-tab-cname
+ selected-tab prev-hitab)
+
+ ;; Disambiguate names
+ (setq tabs (loop with tab-names = (make-hash-table :test 'equal)
+ for tab in tabs
+ for cname = (format "%s (%s)" (second tab) (first tab))
+ for num = (incf (gethash cname tab-names -1))
+ if (> num 0)
+ do (setq cname (format "%s <%d>" cname num))
+ collect (cons cname tab)))
+
+ (labels ((find-tab-by-cname
+ (cname)
+ (loop for tab in tabs
+ if (equal (car tab) cname)
+ return (cdr tab)))
+
+ (mogrify-highlighting
+ (hitab unhitab)
+
+ ;; Hack to reduce the number of
+ ;; round-trips to mozilla
+ (let (cmds)
+ (cond
+ ;; Highlighting tab
+ ((fourth hitab)
+ (push '(js! ((fourth hitab) "setAttribute")
+ "style"
+ "color: red; font-weight: bold")
+ cmds)
+
+ ;; Highlight window proper
+ (push '(js! ((third hitab)
+ "setAttribute")
+ "style"
+ "border: 8px solid red")
+ cmds)
+
+ ;; Select tab, when appropriate
+ (when js-js-switch-tabs
+ (push
+ '(js> ((fifth hitab) "selectedTab") (fourth hitab))
+ cmds)))
+
+ ;; Hilighting whole window
+ ((third hitab)
+ (push '(js! ((third hitab) "document"
+ "documentElement" "setAttribute")
+ "style"
+ (concat "-moz-appearance: none;"
+ "border: 8px solid red;"))
+ cmds)))
+
+ (cond
+ ;; Unhighlighting tab
+ ((fourth unhitab)
+ (push '(js! ((fourth unhitab) "setAttribute") "style" "")
+ cmds)
+ (push '(js! ((third unhitab) "setAttribute") "style" "")
+ cmds))
+
+ ;; Unhighlighting window
+ ((third unhitab)
+ (push '(js! ((third unhitab) "document"
+ "documentElement" "setAttribute")
+ "style" "")
+ cmds)))
+
+ (eval (list 'with-js
+ (cons 'js-list (nreverse cmds))))))
+
+ (command-hook
+ ()
+ (let* ((tab (find-tab-by-cname (car ido-matches))))
+ (mogrify-highlighting tab prev-hitab)
+ (setq prev-hitab tab)))
+
+ (setup-hook
+ ()
+ ;; Fiddle with the match list a bit: if our first match
+ ;; is a tabbrowser window, rotate the match list until
+ ;; the active tab comes up
+ (let ((matched-tab (find-tab-by-cname (car ido-matches))))
+ (when (and matched-tab
+ (null (fourth matched-tab))
+ (equal "navigator:browser"
+ (js! ((third matched-tab)
+ "document"
+ "documentElement"
+ "getAttribute")
+ "windowtype")))
+
+ (loop with tab-to-match = (js< (third matched-tab)
+ "gBrowser"
+ "selectedTab")
+
+ with index = 0
+ for match in ido-matches
+ for candidate-tab = (find-tab-by-cname match)
+ if (eq (fourth candidate-tab) tab-to-match)
+ do (setq ido-cur-list (ido-chop ido-cur-list match))
+ and return t)))
+
+ (add-hook 'post-command-hook #'command-hook t t)))
+
+
+ (unwind-protect
+ (setq selected-tab-cname
+ (let ((ido-minibuffer-setup-hook
+ (cons #'setup-hook ido-minibuffer-setup-hook)))
+ (ido-completing-read
+ prompt
+ (mapcar #'car tabs)
+ nil t nil
+ 'js-read-tab-history)))
+
+ (when prev-hitab
+ (mogrify-highlighting nil prev-hitab)
+ (setq prev-hitab nil)))
+
+ (add-to-history 'js-read-tab-history selected-tab-cname)
+
+ (setq selected-tab (loop for tab in tabs
+ if (equal (car tab) selected-tab-cname)
+ return (cdr tab)))
+
+ (if (fourth selected-tab)
+ (cons 'browser (third selected-tab))
+ (cons 'window (third selected-tab)))))))
+
+(defun js--guess-eval-defun-info (pstate)
+ "Internal helper for `js-eval-defun'. Returns a list (NAME . CLASSPARTS),
+where CLASSPARTS is a list of strings making up the class name
+and NAME is the name of the function part."
+ (cond ((and (= (length pstate) 3)
+ (eq (js--pitem-type (first pstate)) 'function)
+ (= (length (js--pitem-name (first pstate))) 1)
+ (consp (js--pitem-type (second pstate))))
+
+ (append (js--pitem-name (second pstate))
+ (list (first (js--pitem-name (first pstate))))))
+
+ ((and (= (length pstate) 2)
+ (eq (js--pitem-type (first pstate)) 'function))
+
+ (append
+ (butlast (js--pitem-name (first pstate)))
+ (list (car (last (js--pitem-name (first pstate)))))))
+
+ (t (error "Function not a toplevel defun or class member"))))
+
+(defvar js--js-context nil
+ "The current JS context. This is a cons like the one returned
+from `js--read-tab'. Change with
+`js-set-js-context'.")
+
+(defconst js--js-inserter
+ "(function(func_info,func) {
+ func_info.unshift('window');
+ var obj = window;
+ for(var i = 1; i < func_info.length - 1; ++i) {
+ var next = obj[func_info[i]];
+ if(typeof next !== 'object' && typeof next !== 'function') {
+ next = obj.prototype && obj.prototype[func_info[i]];
+ if(typeof next !== 'object' && typeof next !== 'function') {
+ alert('Could not find ' + func_info.slice(0, i+1).join('.') +
+ ' or ' + func_info.slice(0, i+1).join('.') + '.prototype');
+ return;
+ }
+
+ func_info.splice(i+1, 0, 'prototype');
+ ++i;
+ }
+ }
+
+ obj[func_info[i]] = func;
+ alert('Successfully updated '+func_info.join('.'));
+ })")
+
+(defun js-set-js-context (context)
+ "Set the Javascript context to CONTEXT, reading from the user
+if interactive"
+ (interactive (list (js--read-tab "Javascript Context: ")))
+ (setq js--js-context context))
+
+(defun js--get-js-context ()
+ "Return a valid JS context. If one hasn't been set, or if it's
+stale, ask the user for a new one."
+
+ (with-js
+ (when (or (null js--js-context)
+ (js--js-handle-expired-p (cdr js--js-context))
+ (ecase (car js--js-context)
+ (window (js? (js< (cdr js--js-context) "closed")))
+ (browser (not (js? (js< (cdr js--js-context)
+ "contentDocument"))))))
+ (setq js--js-context (js--read-tab "Javascript Context: ")))
+
+ js--js-context))
+
+(defun js--js-content-window (context)
+ (with-js
+ (ecase (car context)
+ (window (cdr context))
+ (browser (js< (cdr context)
+ "contentWindow" "wrappedJSObject")))))
+
+(defun js--make-nsilocalfile (path)
+ (with-js
+ (let ((file (js-create-instance "@mozilla.org/file/local;1"
+ "nsILocalFile")))
+ (js! (file "initWithPath") path)
+ file)))
+
+(defun js--js-add-resource-alias (alias path)
+ (with-js
+ (let* ((io-service (js-get-service "@mozilla.org/network/io-service;1"
+ "nsIIOService"))
+ (res-prot (js! (io-service "getProtocolHandler") "resource"))
+ (res-prot (js-qi res-prot "nsIResProtocolHandler"))
+ (path-file (js--make-nsilocalfile path))
+ (path-uri (js! (io-service "newFileURI") path-file)))
+ (js! (res-prot "setSubstitution") alias path-uri))))
+
+(defun* js-eval-defun ()
+ "Update some Mozilla tab with defun containing point or after
+point"
+ (interactive)
+
+ ;; This function works by generating a temporary file that contains
+ ;; the function we'd like to insert. We then use the elisp-js bridge
+ ;; to command mozilla to load this file by inserting a script tag
+ ;; into the document we set. This way, debuggers and such will have
+ ;; a way to find the source of the just-inserted function.
+ ;;
+ ;; We delete the temporary file if there's an error, but otherwise
+ ;; we add an unload event listener on the Mozilla side to delete the
+ ;; file.
+
+ (save-excursion
+ (let (begin end pstate defun-info temp-name defun-body)
+ (js--end-of-defun)
+ (setq end (point))
+ (js--ensure-cache)
+ (js--beginning-of-defun)
+ (re-search-forward "\\_<function\\_>")
+ (setq begin (match-beginning 0))
+ (setq pstate (js--forward-pstate))
+
+ (when (or (null pstate)
+ (> (point) end))
+ (error "Could not locate function definition"))
+
+ (setq defun-info (js--guess-eval-defun-info pstate))
+
+ (let ((overlay (make-overlay begin end)))
+ (overlay-put overlay 'face 'highlight)
+ (unwind-protect
+ (unless (y-or-n-p (format "Send %s to Mozilla? "
+ (mapconcat #'identity defun-info ".")))
+ (message "") ; question message lingers until next command
+ (return-from js-eval-defun))
+ (delete-overlay overlay)))
+
+ (setq defun-body (buffer-substring-no-properties begin end))
+
+ (make-directory js-js-tmpdir t)
+
+ ;; (Re)register a Mozilla resource URL to point to the
+ ;; temporary directory
+ (js--js-add-resource-alias "js" js-js-tmpdir)
+
+ (setq temp-name (make-temp-file (concat js-js-tmpdir
+ "/js-")
+ nil ".js"))
+ (unwind-protect
+ (with-js
+ (with-temp-buffer
+ (insert js--js-inserter)
+ (insert "(")
+ (insert (json-encode-list defun-info))
+ (insert ",\n")
+ (insert defun-body)
+ (insert "\n)")
+ (write-region (point-min) (point-max) temp-name
+ nil 1))
+
+ ;; Give Mozilla responsibility for deleting this file
+ (let* ((content-window (js--js-content-window
+ (js--get-js-context)))
+ (content-document (js< content-window "document"))
+ (head (if (js? (js< content-document "body"))
+ ;; Regular content
+ (js< (js! (content-document
"getElementsByTagName")
+ "head")
+ 0)
+ ;; Chrome
+ (js< content-document "documentElement")))
+ (elem (js! (content-document "createElementNS")
+ "http://www.w3.org/1999/xhtml"; "script")))
+
+ (js! (elem "setAttribute") "type" "text/javascript")
+ (js! (elem "setAttribute") "src"
+ (format "resource://js/%s"
+ (file-name-nondirectory temp-name)))
+
+ (js! (head "appendChild") elem)
+
+ (js! (content-window "addEventListener") "unload"
+ (js! ((js-new
+ "Function" "file"
+ "return function() { file.remove(false) }"))
+ (js--make-nsilocalfile temp-name))
+ 'false)
+ (setq temp-name nil)
+
+
+
+ ))
+
+ ;; temp-name is set to nil on success
+ (when temp-name
+ (delete-file temp-name))))))
+
+;;; Main Function
+
+;;;###autoload
+(define-derived-mode js-mode nil "js"
+ "Major mode for editing JavaScript source text.
+
+Key bindings:
+
+\\{js-mode-map}"
+
+ :group 'js
+ :syntax-table js-mode-syntax-table
+
+ (set (make-local-variable 'indent-line-function) 'js-indent-line)
+ (set (make-local-variable 'beginning-of-defun-function)
+ 'js--beginning-of-defun)
+ (set (make-local-variable 'end-of-defun-function)
+ 'js--end-of-defun)
+
+ (set (make-local-variable 'open-paren-in-column-0-is-defun-start) nil)
+ (set (make-local-variable 'font-lock-defaults)
+ (list js--font-lock-keywords
+ nil nil nil nil
+ '(font-lock-syntactic-keywords
+ . js--font-lock-syntactic-keywords)))
+
+ (set (make-local-variable 'parse-sexp-ignore-comments) t)
+ (set (make-local-variable 'parse-sexp-lookup-properties) t)
+ (set (make-local-variable 'which-func-imenu-joiner-function)
+ #'js--which-func-joiner)
+
+ ;; Comments
+ (setq comment-start "// ")
+ (setq comment-end "")
+ (set (make-local-variable 'fill-paragraph-function)
+ 'js-c-fill-paragraph)
+
+ ;; Parse cache
+ (add-hook 'before-change-functions #'js--flush-caches t t)
+
+ ;; Frameworks
+ (js--update-quick-match-re)
+
+ ;; Imenu
+ (setq imenu-case-fold-search nil)
+ (set (make-local-variable 'imenu-create-index-function)
+ #'js--imenu-create-index)
+
+ (setq major-mode 'js-mode)
+ (setq mode-name "Javascript")
+
+ ;; for filling, pretend we're cc-mode
+ (setq c-comment-prefix-regexp "//+\\|\\**"
+ c-paragraph-start "$"
+ c-paragraph-separate "$"
+ c-block-comment-prefix "* "
+ c-line-comment-starter "//"
+ c-comment-start-regexp "/[*/]\\|\\s!"
+ comment-start-skip "\\(//+\\|/\\*+\\)\\s *")
+
+ (let ((c-buffer-is-cc-mode t))
+ (c-setup-paragraph-variables))
+
+ (set (make-local-variable 'syntax-begin-function)
+ #'js--syntax-begin-function)
+
+ ;; Important to fontify the whole buffer syntactically! If we don't,
+ ;; then we might have regular expression literals that aren't marked
+ ;; as strings, which will screw up parse-partial-sexp, scan-lists,
+ ;; etc. and and produce maddening "unbalanced parenthesis" errors.
+ ;; When we attempt to find the error and scroll to the portion of
+ ;; the buffer containing the problem, JIT-lock will apply the
+ ;; correct syntax to the regular expresion literal and the problem
+ ;; will mysteriously disappear.
+ (font-lock-set-defaults)
+
+ (let (font-lock-keywords) ; leaves syntactic keywords intact
+ (font-lock-fontify-buffer)))
+
+(defalias 'javascript-mode 'js-mode)
+
+(eval-after-load 'folding
+ '(when (fboundp 'folding-add-to-marks-list)
+ (folding-add-to-marks-list 'js-mode "// {{{" "// }}}" )))
+
+(provide 'js)
+
+;; js.el ends here
Index: progmodes/js2-mode.el
===================================================================
RCS file: progmodes/js2-mode.el
diff -N progmodes/js2-mode.el
--- progmodes/js2-mode.el 10 Aug 2009 02:53:00 -0000 1.3
+++ /dev/null 1 Jan 1970 00:00:00 -0000
@@ -1,11359 +0,0 @@
-;;; js2-mode.el --- an improved JavaScript editing mode
-
-;; Copyright (C) 2009 Free Software Foundation, Inc.
-
-;; Author: Steve Yegge <address@hidden>
-;; Version: See `js2-mode-version'
-;; Keywords: languages, javascript
-
-;; This file is part of GNU Emacs.
-
-;; GNU Emacs is free software: you can redistribute it and/or modify
-;; it under the terms of the GNU General Public License as published by
-;; the Free Software Foundation, either version 3 of the License, or
-;; (at your option) any later version.
-
-;; GNU Emacs is distributed in the hope that it will be useful,
-;; but WITHOUT ANY WARRANTY; without even the implied warranty of
-;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-;; GNU General Public License for more details.
-
-;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
-
-;;; Commentary:
-
-;; This JavaScript editing mode supports:
-
-;; - strict recognition of the Ecma-262 language standard
-;; - support for most Rhino and SpiderMonkey extensions from 1.5 to 1.8
-;; - parsing support for ECMAScript for XML (E4X, ECMA-357)
-;; - accurate syntax highlighting using a recursive-descent parser
-;; - on-the-fly reporting of syntax errors and strict-mode warnings
-;; - undeclared-variable warnings using a configurable externs framework
-;; - "bouncing" line indentation to choose among alternate indentation points
-;; - smart line-wrapping within comments and strings
-;; - code folding:
-;; - show some or all function bodies as {...}
-;; - show some or all block comments as /*...*/
-;; - context-sensitive menu bar and popup menus
-;; - code browsing using the `imenu' package
-;; - typing helpers such as automatic insertion of matching braces/parens
-;; - many customization options
-
-;; To customize how it works:
-;; M-x customize-group RET js2-mode RET
-
-;; Notes:
-
-;; This mode includes a port of Mozilla Rhino's scanner, parser and
-;; symbol table. Ideally it should stay in sync with Rhino, keeping
-;; `js2-mode' current as the EcmaScript language standard evolves.
-
-;; Unlike cc-engine based language modes, js2-mode's line-indentation is not
-;; customizable. It is a surprising amount of work to support customizable
-;; indentation. The current compromise is that the tab key lets you cycle
among
-;; various likely indentation points, similar to the behavior of python-mode.
-
-;; This mode does not yet work with "multi-mode" modes such as `mmm-mode'
-;; and `mumamo', although it could be made to do so with some effort.
-;; This means that `js2-mode' is currently only useful for editing JavaScript
-;; files, and not for editing JavaScript within <script> tags or templates.
-
-;;; Code:
-
-(eval-when-compile
- (require 'cl))
-
-(require 'imenu)
-(require 'cc-cmds) ; for `c-fill-paragraph'
-
-(eval-and-compile
- (require 'cc-mode) ; (only) for `c-populate-syntax-table'
- (require 'cc-langs) ; it's here in Emacs 21...
- (require 'cc-engine)) ; for `c-paragraph-start' et. al.
-
-;;; Externs (variables presumed to be defined by the host system)
-
-(defvar js2-ecma-262-externs
- (mapcar 'symbol-name
- '(Array Boolean Date Error EvalError Function Infinity
- Math NaN Number Object RangeError ReferenceError RegExp
- String SyntaxError TypeError URIError arguments
- decodeURI decodeURIComponent encodeURI
- encodeURIComponent escape eval isFinite isNaN
- parseFloat parseInt undefined unescape))
-"Ecma-262 externs. Included in `js2-externs' by default.")
-
-(defvar js2-browser-externs
- (mapcar 'symbol-name
- '(;; DOM level 1
- Attr CDATASection CharacterData Comment DOMException
- DOMImplementation Document DocumentFragment
- DocumentType Element Entity EntityReference
- ExceptionCode NamedNodeMap Node NodeList Notation
- ProcessingInstruction Text
-
- ;; DOM level 2
- HTMLAnchorElement HTMLAppletElement HTMLAreaElement
- HTMLBRElement HTMLBaseElement HTMLBaseFontElement
- HTMLBodyElement HTMLButtonElement HTMLCollection
- HTMLDListElement HTMLDirectoryElement HTMLDivElement
- HTMLDocument HTMLElement HTMLFieldSetElement
- HTMLFontElement HTMLFormElement HTMLFrameElement
- HTMLFrameSetElement HTMLHRElement HTMLHeadElement
- HTMLHeadingElement HTMLHtmlElement HTMLIFrameElement
- HTMLImageElement HTMLInputElement HTMLIsIndexElement
- HTMLLIElement HTMLLabelElement HTMLLegendElement
- HTMLLinkElement HTMLMapElement HTMLMenuElement
- HTMLMetaElement HTMLModElement HTMLOListElement
- HTMLObjectElement HTMLOptGroupElement
- HTMLOptionElement HTMLOptionsCollection
- HTMLParagraphElement HTMLParamElement HTMLPreElement
- HTMLQuoteElement HTMLScriptElement HTMLSelectElement
- HTMLStyleElement HTMLTableCaptionElement
- HTMLTableCellElement HTMLTableColElement
- HTMLTableElement HTMLTableRowElement
- HTMLTableSectionElement HTMLTextAreaElement
- HTMLTitleElement HTMLUListElement
-
- ;; DOM level 3
- DOMConfiguration DOMError DOMException
- DOMImplementationList DOMImplementationSource
- DOMLocator DOMStringList NameList TypeInfo
- UserDataHandler
-
- ;; Window
- alert confirm document java navigator prompt screen
- self top
-
- ;; W3C CSS
- CSSCharsetRule CSSFontFace CSSFontFaceRule
- CSSImportRule CSSMediaRule CSSPageRule
- CSSPrimitiveValue CSSProperties CSSRule CSSRuleList
- CSSStyleDeclaration CSSStyleRule CSSStyleSheet
- CSSValue CSSValueList Counter DOMImplementationCSS
- DocumentCSS DocumentStyle ElementCSSInlineStyle
- LinkStyle MediaList RGBColor Rect StyleSheet
- StyleSheetList ViewCSS
-
- ;; W3C Event
- EventListener EventTarget Event DocumentEvent UIEvent
- MouseEvent MutationEvent KeyboardEvent
-
- ;; W3C Range
- DocumentRange Range RangeException
-
- ;; W3C XML
- XPathResult XMLHttpRequest))
- "Browser externs.
-You can cause these to be included or excluded with the custom
-variable `js2-include-browser-externs'.")
-
-(defvar js2-rhino-externs
- (mapcar 'symbol-name
- '(Packages importClass importPackage com org java
- ;; Global object (shell) externs
- defineClass deserialize doctest gc help load
- loadClass print quit readFile readUrl runCommand seal
- serialize spawn sync toint32 version))
- "Mozilla Rhino externs.
-Set `js2-include-rhino-externs' to t to include them.")
-
-(defvar js2-gears-externs
- (mapcar 'symbol-name
- '(
- ;; TODO(stevey): add these
- ))
- "Google Gears externs.
-Set `js2-include-gears-externs' to t to include them.")
-
-;;; Variables
-
-(defvar js2-emacs22 (>= emacs-major-version 22))
-
-(defcustom js2-highlight-level 2
- "Amount of syntax highlighting to perform.
-nil, zero or negative means none.
-1 adds basic syntax highlighting.
-2 adds highlighting of some Ecma built-in properties.
-3 adds highlighting of many Ecma built-in functions."
- :group 'js2-mode
- :type '(choice (const :tag "None" nil)
- (const :tag "Basic" 1)
- (const :tag "Include Properties" 2)
- (const :tag "Include Functions" 3)))
-
-(defvar js2-mode-dev-mode-p nil
- "Non-nil if running in development mode. Normally nil.")
-
-(defgroup js2-mode nil
- "An improved JavaScript mode."
- :group 'languages)
-
-(defcustom js2-basic-offset (if (and (boundp 'c-basic-offset)
- (numberp c-basic-offset))
- c-basic-offset
- 4)
- "Number of spaces to indent nested statements.
-Similar to `c-basic-offset'."
- :group 'js2-mode
- :type 'integer)
-(make-variable-buffer-local 'js2-basic-offset)
-
-(defcustom js2-mirror-mode t
- "Non-nil to insert closing brackets, parens, etc. automatically."
- :group 'js2-mode
- :type 'boolean)
-
-(defcustom js2-auto-indent-p nil
- "Automatic indentation with punctuation characters.
-If non-nil, the current line is indented when certain punctuations
-are inserted."
- :group 'js2-mode
- :type 'boolean)
-
-(defcustom js2-bounce-indent-p nil
- "Non-nil to have indent-line function choose among alternatives.
-If nil, the indent-line function will indent to a predetermined column
-based on heuristic guessing. If non-nil, then if the current line is
-already indented to that predetermined column, indenting will choose
-another likely column and indent to that spot. Repeated invocation of
-the indent-line function will cycle among the computed alternatives.
-See the function `js2-bounce-indent' for details."
- :type 'boolean
- :group 'js2-mode)
-
-(defcustom js2-indent-on-enter-key nil
- "Non-nil to have Enter/Return key indent the line.
-This is unusual for Emacs modes but common in IDEs like Eclipse."
- :type 'boolean
- :group 'js2-mode)
-
-(defcustom js2-enter-indents-newline nil
- "Non-nil to have Enter/Return key indent the newly-inserted line.
-This is unusual for Emacs modes but common in IDEs like Eclipse."
- :type 'boolean
- :group 'js2-mode)
-
-(defcustom js2-rebind-eol-bol-keys t
- "Non-nil to rebind `beginning-of-line' and `end-of-line' keys.
-If non-nil, bounce between bol/eol and first/last non-whitespace char."
- :group 'js2-mode
- :type 'boolean)
-
-(defcustom js2-electric-keys '("{" "}" "(" ")" "[" "]" ":" ";" "," "*")
- "Keys that auto-indent when `js2-auto-indent-p' is non-nil.
-Each value in the list is passed to `define-key'."
- :type 'list
- :group 'js2-mode)
-
-(defcustom js2-idle-timer-delay 0.2
- "Delay in secs before re-parsing after user makes changes.
-Multiplied by `js2-dynamic-idle-timer-adjust', which see."
- :type 'number
- :group 'js2-mode)
-(make-variable-buffer-local 'js2-idle-timer-delay)
-
-(defcustom js2-dynamic-idle-timer-adjust 0
- "Positive to adjust `js2-idle-timer-delay' based on file size.
-The idea is that for short files, parsing is faster so we can be
-more responsive to user edits without interfering with editing.
-The buffer length in characters (typically bytes) is divided by
-this value and used to multiply `js2-idle-timer-delay' for the
-buffer. For example, a 21k file and 10k adjust yields 21k/10k
-== 2, so js2-idle-timer-delay is multiplied by 2.
-If `js2-dynamic-idle-timer-adjust' is 0 or negative,
-`js2-idle-timer-delay' is not dependent on the file size."
- :type 'number
- :group 'js2-mode)
-
-(defcustom js2-mode-escape-quotes t
- "Non-nil to disable automatic quote-escaping inside strings."
- :type 'boolean
- :group 'js2-mode)
-
-(defcustom js2-mode-squeeze-spaces t
- "Non-nil to normalize whitespace when filling in comments.
-Multiple runs of spaces are converted to a single space."
- :type 'boolean
- :group 'js2-mode)
-
-(defcustom js2-mode-show-parse-errors t
- "True to highlight parse errors."
- :type 'boolean
- :group 'js2-mode)
-
-(defcustom js2-mode-show-strict-warnings t
- "Non-nil to emit Ecma strict-mode warnings.
-Some of the warnings can be individually disabled by other flags,
-even if this flag is non-nil."
- :type 'boolean
- :group 'js2-mode)
-
-(defcustom js2-strict-trailing-comma-warning t
- "Non-nil to warn about trailing commas in array literals.
-Ecma-262 forbids them, but many browsers permit them. IE is the
-big exception, and can produce bugs if you have trailing commas."
- :type 'boolean
- :group 'js2-mode)
-
-(defcustom js2-strict-missing-semi-warning t
- "Non-nil to warn about semicolon auto-insertion after statement.
-Technically this is legal per Ecma-262, but some style guides disallow
-depending on it."
- :type 'boolean
- :group 'js2-mode)
-
-(defcustom js2-missing-semi-one-line-override nil
- "Non-nil to permit missing semicolons in one-line functions.
-In one-liner functions such as `function identity(x) {return x}'
-people often omit the semicolon for a cleaner look. If you are
-such a person, you can suppress the missing-semicolon warning
-by setting this variable to t."
- :type 'boolean
- :group 'js2-mode)
-
-(defcustom js2-strict-inconsistent-return-warning t
- "Non-nil to warn about mixing returns with value-returns.
-It's perfectly legal to have a `return' and a `return foo' in the
-same function, but it's often an indicator of a bug, and it also
-interferes with type inference (in systems that support it.)"
- :type 'boolean
- :group 'js2-mode)
-
-(defcustom js2-strict-cond-assign-warning t
- "Non-nil to warn about expressions like if (a = b).
-This often should have been '==' instead of '='. If the warning
-is enabled, you can suppress it on a per-expression basis by
-parenthesizing the expression, e.g. if ((a = b)) ..."
- :type 'boolean
- :group 'js2-mode)
-
-(defcustom js2-strict-cond-assign-warning t
- "Non-nil to warn about expressions like if (a = b).
-This often should have been '==' instead of '='. If the warning
-is enabled, you can suppress it on a per-expression basis by
-parenthesizing the expression, e.g. if ((a = b)) ..."
- :type 'boolean
- :group 'js2-mode)
-
-(defcustom js2-strict-var-redeclaration-warning t
- "Non-nil to warn about redeclaring variables in a script or function."
- :type 'boolean
- :group 'js2-mode)
-
-(defcustom js2-strict-var-hides-function-arg-warning t
- "Non-nil to warn about a var decl hiding a function argument."
- :type 'boolean
- :group 'js2-mode)
-
-(defcustom js2-skip-preprocessor-directives nil
- "Non-nil to treat lines beginning with # as comments.
-Useful for viewing Mozilla JavaScript source code."
- :type 'boolean
- :group 'js2-mode)
-
-(defcustom js2-language-version 180
- "Configures what JavaScript language version to recognize.
-Currently versions 150, 160, 170 and 180 are supported, corresponding
-to JavaScript 1.5, 1.6, 1.7 and 1.8, respectively. In a nutshell,
-1.6 adds E4X support, 1.7 adds let, yield, and Array comprehensions,
-and 1.8 adds function closures."
- :type 'integer
- :group 'js2-mode)
-
-(defcustom js2-allow-keywords-as-property-names t
- "If non-nil, you can use JavaScript keywords as object property names.
-Examples:
-
- var foo = {int: 5, while: 6, continue: 7};
- foo.return = 8;
-
-Ecma-262 forbids this syntax, but many browsers support it."
- :type 'boolean
- :group 'js2-mode)
-
-(defcustom js2-instanceof-has-side-effects nil
- "If non-nil, treats the instanceof operator as having side effects.
-This is useful for xulrunner apps."
- :type 'boolean
- :group 'js2-mode)
-
-(defcustom js2-cleanup-whitespace nil
- "Non-nil to invoke `delete-trailing-whitespace' before saves."
- :type 'boolean
- :group 'js2-mode)
-
-(defcustom js2-move-point-on-right-click t
- "Non-nil to move insertion point when you right-click.
-This makes right-click context menu behavior a bit more intuitive,
-since menu operations generally apply to the point. The exception
-is if there is a region selection, in which case the point does -not-
-move, so cut/copy/paste etc. can work properly.
-
-Note that IntelliJ moves the point, and Eclipse leaves it alone,
-so this behavior is customizable."
- :group 'js2-mode
- :type 'boolean)
-
-(defcustom js2-allow-rhino-new-expr-initializer t
- "Non-nil to support a Rhino's experimental syntactic construct.
-
-Rhino supports the ability to follow a `new' expression with an object
-literal, which is used to set additional properties on the new object
-after calling its constructor. Syntax:
-
- new <expr> [ ( arglist ) ] [initializer]
-
-Hence, this expression:
-
- new Object {a: 1, b: 2}
-
-results in an Object with properties a=1 and b=2. This syntax is
-apparently not configurable in Rhino - it's currently always enabled,
-as of Rhino version 1.7R2."
- :type 'boolean
- :group 'js2-mode)
-
-(defcustom js2-allow-member-expr-as-function-name nil
- "Non-nil to support experimental Rhino syntax for function names.
-
-Rhino supports an experimental syntax configured via the Rhino Context
-setting `allowMemberExprAsFunctionName'. The experimental syntax is:
-
- function <member-expr> ( [ arg-list ] ) { <body> }
-
-Where member-expr is a non-parenthesized 'member expression', which
-is anything at the grammar level of a new-expression or lower, meaning
-any expression that does not involve infix or unary operators.
-
-When <member-expr> is not a simple identifier, then it is syntactic
-sugar for assigning the anonymous function to the <member-expr>. Hence,
-this code:
-
- function a.b().c[2] (x, y) { ... }
-
-is rewritten as:
-
- a.b().c[2] = function(x, y) {...}
-
-which doesn't seem particularly useful, but Rhino permits it."
- :type 'boolean
- :group 'js2-mode)
-
-(defvar js2-mode-version 20090727
- "Release number for `js2-mode'.")
-
-;; scanner variables
-
-(defmacro js2-deflocal (name value &optional comment)
- "Define a buffer-local variable NAME with VALUE and COMMENT."
- `(progn
- (defvar ,name ,value ,comment)
- (make-variable-buffer-local ',name)))
-
-;; We record the start and end position of each token.
-(js2-deflocal js2-token-beg 1)
-(js2-deflocal js2-token-end -1)
-
-(defvar js2-EOF_CHAR -1
- "Represents end of stream. Distinct from js2-EOF token type.")
-
-;; I originally used symbols to represent tokens, but Rhino uses
-;; ints and then sets various flag bits in them, so ints it is.
-;; The upshot is that we need a `js2-' prefix in front of each name.
-(defvar js2-ERROR -1)
-(defvar js2-EOF 0)
-(defvar js2-EOL 1)
-(defvar js2-ENTERWITH 2) ; begin interpreter bytecodes
-(defvar js2-LEAVEWITH 3)
-(defvar js2-RETURN 4)
-(defvar js2-GOTO 5)
-(defvar js2-IFEQ 6)
-(defvar js2-IFNE 7)
-(defvar js2-SETNAME 8)
-(defvar js2-BITOR 9)
-(defvar js2-BITXOR 10)
-(defvar js2-BITAND 11)
-(defvar js2-EQ 12)
-(defvar js2-NE 13)
-(defvar js2-LT 14)
-(defvar js2-LE 15)
-(defvar js2-GT 16)
-(defvar js2-GE 17)
-(defvar js2-LSH 18)
-(defvar js2-RSH 19)
-(defvar js2-URSH 20)
-(defvar js2-ADD 21) ; infix plus
-(defvar js2-SUB 22) ; infix minus
-(defvar js2-MUL 23)
-(defvar js2-DIV 24)
-(defvar js2-MOD 25)
-(defvar js2-NOT 26)
-(defvar js2-BITNOT 27)
-(defvar js2-POS 28) ; unary plus
-(defvar js2-NEG 29) ; unary minus
-(defvar js2-NEW 30)
-(defvar js2-DELPROP 31)
-(defvar js2-TYPEOF 32)
-(defvar js2-GETPROP 33)
-(defvar js2-GETPROPNOWARN 34)
-(defvar js2-SETPROP 35)
-(defvar js2-GETELEM 36)
-(defvar js2-SETELEM 37)
-(defvar js2-CALL 38)
-(defvar js2-NAME 39) ; an identifier
-(defvar js2-NUMBER 40)
-(defvar js2-STRING 41)
-(defvar js2-NULL 42)
-(defvar js2-THIS 43)
-(defvar js2-FALSE 44)
-(defvar js2-TRUE 45)
-(defvar js2-SHEQ 46) ; shallow equality (===)
-(defvar js2-SHNE 47) ; shallow inequality (!==)
-(defvar js2-REGEXP 48)
-(defvar js2-BINDNAME 49)
-(defvar js2-THROW 50)
-(defvar js2-RETHROW 51) ; rethrow caught exception: catch (e if ) uses
it
-(defvar js2-IN 52)
-(defvar js2-INSTANCEOF 53)
-(defvar js2-LOCAL_LOAD 54)
-(defvar js2-GETVAR 55)
-(defvar js2-SETVAR 56)
-(defvar js2-CATCH_SCOPE 57)
-(defvar js2-ENUM_INIT_KEYS 58)
-(defvar js2-ENUM_INIT_VALUES 59)
-(defvar js2-ENUM_INIT_ARRAY 60)
-(defvar js2-ENUM_NEXT 61)
-(defvar js2-ENUM_ID 62)
-(defvar js2-THISFN 63)
-(defvar js2-RETURN_RESULT 64) ; to return previously stored return result
-(defvar js2-ARRAYLIT 65) ; array literal
-(defvar js2-OBJECTLIT 66) ; object literal
-(defvar js2-GET_REF 67) ; *reference
-(defvar js2-SET_REF 68) ; *reference = something
-(defvar js2-DEL_REF 69) ; delete reference
-(defvar js2-REF_CALL 70) ; f(args) = something or f(args)++
-(defvar js2-REF_SPECIAL 71) ; reference for special properties like __proto
-(defvar js2-YIELD 72) ; JS 1.7 yield pseudo keyword
-
-;; XML support
-(defvar js2-DEFAULTNAMESPACE 73)
-(defvar js2-ESCXMLATTR 74)
-(defvar js2-ESCXMLTEXT 75)
-(defvar js2-REF_MEMBER 76) ; Reference for address@hidden, x..y etc.
-(defvar js2-REF_NS_MEMBER 77) ; Reference for x.ns::y, x..ns::y etc.
-(defvar js2-REF_NAME 78) ; Reference for @y, @[y] etc.
-(defvar js2-REF_NS_NAME 79) ; Reference for ns::y, @ns::address@hidden etc.
-
-(defvar js2-first-bytecode js2-ENTERWITH)
-(defvar js2-last-bytecode js2-REF_NS_NAME)
-
-(defvar js2-TRY 80)
-(defvar js2-SEMI 81) ; semicolon
-(defvar js2-LB 82) ; left and right brackets
-(defvar js2-RB 83)
-(defvar js2-LC 84) ; left and right curly-braces
-(defvar js2-RC 85)
-(defvar js2-LP 86) ; left and right parens
-(defvar js2-RP 87)
-(defvar js2-COMMA 88) ; comma operator
-
-(defvar js2-ASSIGN 89) ; simple assignment (=)
-(defvar js2-ASSIGN_BITOR 90) ; |=
-(defvar js2-ASSIGN_BITXOR 91) ; ^=
-(defvar js2-ASSIGN_BITAND 92) ; &=
-(defvar js2-ASSIGN_LSH 93) ; <<=
-(defvar js2-ASSIGN_RSH 94) ; >>=
-(defvar js2-ASSIGN_URSH 95) ; >>>=
-(defvar js2-ASSIGN_ADD 96) ; +=
-(defvar js2-ASSIGN_SUB 97) ; -=
-(defvar js2-ASSIGN_MUL 98) ; *=
-(defvar js2-ASSIGN_DIV 99) ; /=
-(defvar js2-ASSIGN_MOD 100) ; %=
-
-(defvar js2-first-assign js2-ASSIGN)
-(defvar js2-last-assign js2-ASSIGN_MOD)
-
-(defvar js2-HOOK 101) ; conditional (?:)
-(defvar js2-COLON 102)
-(defvar js2-OR 103) ; logical or (||)
-(defvar js2-AND 104) ; logical and (&&)
-(defvar js2-INC 105) ; increment/decrement (++ --)
-(defvar js2-DEC 106)
-(defvar js2-DOT 107) ; member operator (.)
-(defvar js2-FUNCTION 108) ; function keyword
-(defvar js2-EXPORT 109) ; export keyword
-(defvar js2-IMPORT 110) ; import keyword
-(defvar js2-IF 111) ; if keyword
-(defvar js2-ELSE 112) ; else keyword
-(defvar js2-SWITCH 113) ; switch keyword
-(defvar js2-CASE 114) ; case keyword
-(defvar js2-DEFAULT 115) ; default keyword
-(defvar js2-WHILE 116) ; while keyword
-(defvar js2-DO 117) ; do keyword
-(defvar js2-FOR 118) ; for keyword
-(defvar js2-BREAK 119) ; break keyword
-(defvar js2-CONTINUE 120) ; continue keyword
-(defvar js2-VAR 121) ; var keyword
-(defvar js2-WITH 122) ; with keyword
-(defvar js2-CATCH 123) ; catch keyword
-(defvar js2-FINALLY 124) ; finally keyword
-(defvar js2-VOID 125) ; void keyword
-(defvar js2-RESERVED 126) ; reserved keywords
-
-(defvar js2-EMPTY 127)
-
-;; Types used for the parse tree - never returned by scanner.
-
-(defvar js2-BLOCK 128) ; statement block
-(defvar js2-LABEL 129) ; label
-(defvar js2-TARGET 130)
-(defvar js2-LOOP 131)
-(defvar js2-EXPR_VOID 132) ; expression statement in functions
-(defvar js2-EXPR_RESULT 133) ; expression statement in scripts
-(defvar js2-JSR 134)
-(defvar js2-SCRIPT 135) ; top-level node for entire script
-(defvar js2-TYPEOFNAME 136) ; for typeof(simple-name)
-(defvar js2-USE_STACK 137)
-(defvar js2-SETPROP_OP 138) ; x.y op= something
-(defvar js2-SETELEM_OP 139) ; x[y] op= something
-(defvar js2-LOCAL_BLOCK 140)
-(defvar js2-SET_REF_OP 141) ; *reference op= something
-
-;; For XML support:
-(defvar js2-DOTDOT 142) ; member operator (..)
-(defvar js2-COLONCOLON 143) ; namespace::name
-(defvar js2-XML 144) ; XML type
-(defvar js2-DOTQUERY 145) ; .() -- e.g., x.emps.emp.(name == "terry")
-(defvar js2-XMLATTR 146) ; @
-(defvar js2-XMLEND 147)
-
-;; Optimizer-only tokens
-(defvar js2-TO_OBJECT 148)
-(defvar js2-TO_DOUBLE 149)
-
-(defvar js2-GET 150) ; JS 1.5 get pseudo keyword
-(defvar js2-SET 151) ; JS 1.5 set pseudo keyword
-(defvar js2-LET 152) ; JS 1.7 let pseudo keyword
-(defvar js2-CONST 153)
-(defvar js2-SETCONST 154)
-(defvar js2-SETCONSTVAR 155)
-(defvar js2-ARRAYCOMP 156)
-(defvar js2-LETEXPR 157)
-(defvar js2-WITHEXPR 158)
-(defvar js2-DEBUGGER 159)
-
-(defvar js2-COMMENT 160)
-(defvar js2-ENUM 161) ; for "enum" reserved word
-
-(defconst js2-num-tokens (1+ js2-ENUM))
-
-(defconst js2-debug-print-trees nil)
-
-;; Rhino accepts any string or stream as input. Emacs character
-;; processing works best in buffers, so we'll assume the input is a
-;; buffer. JavaScript strings can be copied into temp buffers before
-;; scanning them.
-
-;; Buffer-local variables yield much cleaner code than using `defstruct'.
-;; They're the Emacs equivalent of instance variables, more or less.
-
-(js2-deflocal js2-ts-dirty-line nil
- "Token stream buffer-local variable.
-Indicates stuff other than whitespace since start of line.")
-
-(js2-deflocal js2-ts-regexp-flags nil
- "Token stream buffer-local variable.")
-
-(js2-deflocal js2-ts-string ""
- "Token stream buffer-local variable.
-Last string scanned.")
-
-(js2-deflocal js2-ts-number nil
- "Token stream buffer-local variable.
-Last literal number scanned.")
-
-(js2-deflocal js2-ts-hit-eof nil
- "Token stream buffer-local variable.")
-
-(js2-deflocal js2-ts-line-start 0
- "Token stream buffer-local variable.")
-
-(js2-deflocal js2-ts-lineno 1
- "Token stream buffer-local variable.")
-
-(js2-deflocal js2-ts-line-end-char -1
- "Token stream buffer-local variable.")
-
-(js2-deflocal js2-ts-cursor 1 ; emacs buffers are 1-indexed
- "Token stream buffer-local variable.
-Current scan position.")
-
-(js2-deflocal js2-ts-is-xml-attribute nil
- "Token stream buffer-local variable.")
-
-(js2-deflocal js2-ts-xml-is-tag-content nil
- "Token stream buffer-local variable.")
-
-(js2-deflocal js2-ts-xml-open-tags-count 0
- "Token stream buffer-local variable.")
-
-(js2-deflocal js2-ts-string-buffer nil
- "Token stream buffer-local variable.
-List of chars built up while scanning various tokens.")
-
-(js2-deflocal js2-ts-comment-type nil
- "Token stream buffer-local variable.")
-
-;;; Parser variables
-
-(js2-deflocal js2-parsed-errors nil
- "List of errors produced during scanning/parsing.")
-
-(js2-deflocal js2-parsed-warnings nil
- "List of warnings produced during scanning/parsing.")
-
-(js2-deflocal js2-recover-from-parse-errors t
- "Non-nil to continue parsing after a syntax error.
-
-In recovery mode, the AST will be built in full, and any error
-nodes will be flagged with appropriate error information. If
-this flag is nil, a syntax error will result in an error being
-signaled.
-
-The variable is automatically buffer-local, because different
-modes that use the parser will need different settings.")
-
-(js2-deflocal js2-parse-hook nil
- "List of callbacks for receiving parsing progress.")
-
-(defvar js2-parse-finished-hook nil
- "List of callbacks to notify when parsing finishes.
-Not called if parsing was interrupted.")
-
-(js2-deflocal js2-is-eval-code nil
- "True if we're evaluating code in a string.
-If non-nil, the tokenizer will record the token text, and the AST nodes
-will record their source text. Off by default for IDE modes, since the
-text is available in the buffer.")
-
-(defvar js2-parse-ide-mode t
- "Non-nil if the parser is being used for `js2-mode'.
-If non-nil, the parser will set text properties for fontification
-and the syntax table. The value should be nil when using the
-parser as a frontend to an interpreter or byte compiler.")
-
-;;; Parser instance variables (buffer-local vars for js2-parse)
-
-(defconst js2-clear-ti-mask #xFFFF
- "Mask to clear token information bits.")
-
-(defconst js2-ti-after-eol (lsh 1 16)
- "Flag: first token of the source line.")
-
-(defconst js2-ti-check-label (lsh 1 17)
- "Flag: indicates to check for label.")
-
-;; Inline Rhino's CompilerEnvirons vars as buffer-locals.
-
-(js2-deflocal js2-compiler-generate-debug-info t)
-(js2-deflocal js2-compiler-use-dynamic-scope nil)
-(js2-deflocal js2-compiler-reserved-keywords-as-identifier nil)
-(js2-deflocal js2-compiler-xml-available t)
-(js2-deflocal js2-compiler-optimization-level 0)
-(js2-deflocal js2-compiler-generating-source t)
-(js2-deflocal js2-compiler-strict-mode nil)
-(js2-deflocal js2-compiler-report-warning-as-error nil)
-(js2-deflocal js2-compiler-generate-observer-count nil)
-(js2-deflocal js2-compiler-activation-names nil)
-
-;; SKIP: sourceURI
-
-;; There's a compileFunction method in Context.java - may need it.
-(js2-deflocal js2-called-by-compile-function nil
- "True if `js2-parse' was called by `js2-compile-function'.
-Will only be used when we finish implementing the interpreter.")
-
-;; SKIP: ts (we just call `js2-init-scanner' and use its vars)
-
-(js2-deflocal js2-current-flagged-token js2-EOF)
-(js2-deflocal js2-current-token js2-EOF)
-
-;; SKIP: node factory - we're going to just call functions directly,
-;; and eventually go to a unified AST format.
-
-(js2-deflocal js2-nesting-of-function 0)
-
-(js2-deflocal js2-recorded-assignments nil
- "Tracks assignments found during parsing.")
-
-(defcustom js2-global-externs nil
- "A list of any extern names you'd like to consider always declared.
-This list is global and is used by all js2-mode files.
-You can create buffer-local externs list using `js2-additional-externs'.
-
-There is also a buffer-local variable `js2-default-externs',
-which is initialized by default to include the Ecma-262 externs
-and the standard browser externs. The three lists are all
-checked during highlighting."
- :type 'list
- :group 'js2-mode)
-
-(js2-deflocal js2-default-externs nil
- "Default external declarations.
-
-These are currently only used for highlighting undeclared variables,
-which only worries about top-level (unqualified) references.
-As js2-mode's processing improves, we will flesh out this list.
-
-The initial value is set to `js2-ecma-262-externs', unless you
-have set `js2-include-browser-externs', in which case the browser
-externs are also included.
-
-See `js2-additional-externs' for more information.")
-
-(defcustom js2-include-browser-externs t
- "Non-nil to include browser externs in the master externs list.
-If you work on JavaScript files that are not intended for browsers,
-such as Mozilla Rhino server-side JavaScript, set this to nil.
-You can always include them on a per-file basis by calling
-`js2-add-browser-externs' from a function on `js2-mode-hook'.
-
-See `js2-additional-externs' for more information about externs."
- :type 'boolean
- :group 'js2-mode)
-
-(defcustom js2-include-rhino-externs t
- "Non-nil to include Mozilla Rhino externs in the master externs list.
-See `js2-additional-externs' for more information about externs."
- :type 'boolean
- :group 'js2-mode)
-
-(defcustom js2-include-gears-externs t
- "Non-nil to include Google Gears externs in the master externs list.
-See `js2-additional-externs' for more information about externs."
- :type 'boolean
- :group 'js2-mode)
-
-(js2-deflocal js2-additional-externs nil
- "A buffer-local list of additional external declarations.
-It is used to decide whether variables are considered undeclared
-for purposes of highlighting.
-
-Each entry is a lisp string. The string should be the fully qualified
-name of an external entity. All externs should be added to this list,
-so that as js2-mode's processing improves it can take advantage of them.
-
-You may want to declare your externs in three ways.
-First, you can add externs that are valid for all your JavaScript files.
-You should probably do this by adding them to `js2-global-externs', which
-is a global list used for all js2-mode files.
-
-Next, you can add a function to `js2-mode-hook' that adds additional
-externs appropriate for the specific file, perhaps based on its path.
-These should go in `js2-additional-externs', which is buffer-local.
-
-Finally, you can add a function to `js2-post-parse-callbacks',
-which is called after parsing completes, and `root' is bound to
-the root of the parse tree. At this stage you can set up an AST
-node visitor using `js2-visit-ast' and examine the parse tree
-for specific import patterns that may imply the existence of
-other externs, possibly tied to your build system. These should also
-be added to `js2-additional-externs'.
-
-Your post-parse callback may of course also use the simpler and
-faster (but perhaps less robust) approach of simply scanning the
-buffer text for your imports, using regular expressions.")
-
-;; SKIP: decompiler
-;; SKIP: encoded-source
-
-;;; The following variables are per-function and should be saved/restored
-;;; during function parsing...
-
-(js2-deflocal js2-current-script-or-fn nil)
-(js2-deflocal js2-current-scope nil)
-(js2-deflocal js2-nesting-of-with 0)
-(js2-deflocal js2-label-set nil
- "An alist mapping label names to nodes.")
-
-(js2-deflocal js2-loop-set nil)
-(js2-deflocal js2-loop-and-switch-set nil)
-(js2-deflocal js2-has-return-value nil)
-(js2-deflocal js2-end-flags 0)
-
-;;; ...end of per function variables
-
-;; Without 2-token lookahead, labels are a problem.
-;; These vars store the token info of the last matched name,
-;; iff it wasn't the last matched token. Only valid in some contexts.
-(defvar js2-prev-name-token-start nil)
-(defvar js2-prev-name-token-string nil)
-
-(defsubst js2-save-name-token-data (pos name)
- (setq js2-prev-name-token-start pos
- js2-prev-name-token-string name))
-
-;; These flags enumerate the possible ways a statement/function can
-;; terminate. These flags are used by endCheck() and by the Parser to
-;; detect inconsistent return usage.
-;;
-;; END_UNREACHED is reserved for code paths that are assumed to always be
-;; able to execute (example: throw, continue)
-;;
-;; END_DROPS_OFF indicates if the statement can transfer control to the
-;; next one. Statement such as return dont. A compound statement may have
-;; some branch that drops off control to the next statement.
-;;
-;; END_RETURNS indicates that the statement can return (without arguments)
-;; END_RETURNS_VALUE indicates that the statement can return a value.
-;;
-;; A compound statement such as
-;; if (condition) {
-;; return value;
-;; }
-;; Will be detected as (END_DROPS_OFF | END_RETURN_VALUE) by endCheck()
-
-(defconst js2-end-unreached #x0)
-(defconst js2-end-drops-off #x1)
-(defconst js2-end-returns #x2)
-(defconst js2-end-returns-value #x4)
-(defconst js2-end-yields #x8)
-
-;; Rhino awkwardly passes a statementLabel parameter to the
-;; statementHelper() function, the main statement parser, which
-;; is then used by quite a few of the sub-parsers. We just make
-;; it a buffer-local variable and make sure it's cleaned up properly.
-(js2-deflocal js2-labeled-stmt nil) ; type `js2-labeled-stmt-node'
-
-;; Similarly, Rhino passes an inForInit boolean through about half
-;; the expression parsers. We use a dynamically-scoped variable,
-;; which makes it easier to funcall the parsers individually without
-;; worrying about whether they take the parameter or not.
-(js2-deflocal js2-in-for-init nil)
-(js2-deflocal js2-temp-name-counter 0)
-(js2-deflocal js2-parse-stmt-count 0)
-
-(defsubst js2-get-next-temp-name ()
- (format "$%d" (incf js2-temp-name-counter)))
-
-(defvar js2-parse-interruptable-p t
- "Set this to nil to force parse to continue until finished.
-This will mostly be useful for interpreters.")
-
-(defvar js2-statements-per-pause 50
- "Pause after this many statements to check for user input.
-If user input is pending, stop the parse and discard the tree.
-This makes for a smoother user experience for large files.
-You may have to wait a second or two before the highlighting
-and error-reporting appear, but you can always type ahead if
-you wish. This appears to be more or less how Eclipse, IntelliJ
-and other editors work.")
-
-(js2-deflocal js2-record-comments t
- "Instructs the scanner to record comments in `js2-scanned-comments'.")
-
-(js2-deflocal js2-scanned-comments nil
- "List of all comments from the current parse.")
-
-(defcustom js2-mode-indent-inhibit-undo nil
- "Non-nil to disable collection of Undo information when indenting lines.
-Some users have requested this behavior. It's nil by default because
-other Emacs modes don't work this way."
- :type 'boolean
- :group 'js2-mode)
-
-(defcustom js2-mode-indent-ignore-first-tab nil
- "If non-nil, ignore first TAB keypress if we look indented properly.
-It's fairly common for users to navigate to an already-indented line
-and press TAB for reassurance that it's been indented. For this class
-of users, we want the first TAB press on a line to be ignored if the
-line is already indented to one of the precomputed alternatives.
-
-This behavior is only partly implemented. If you TAB-indent a line,
-navigate to another line, and then navigate back, it fails to clear
-the last-indented variable, so it thinks you've already hit TAB once,
-and performs the indent. A full solution would involve getting on the
-point-motion hooks for the entire buffer. If we come across another
-use cases that requires watching point motion, I'll consider doing it.
-
-If you set this variable to nil, then the TAB key will always change
-the indentation of the current line, if more than one alternative
-indentation spot exists."
- :type 'boolean
- :group 'js2-mode)
-
-(defvar js2-indent-hook nil
- "A hook for user-defined indentation rules.
-
-Functions on this hook should expect two arguments: (LIST INDEX)
-The LIST argument is the list of computed indentation points for
-the current line. INDEX is the list index of the indentation point
-that `js2-bounce-indent' plans to use. If INDEX is nil, then the
-indent function is not going to change the current line indentation.
-
-If a hook function on this list returns a non-nil value, then
-`js2-bounce-indent' assumes the hook function has performed its own
-indentation, and will do nothing. If all hook functions on the list
-return nil, then `js2-bounce-indent' will use its computed indentation
-and reindent the line.
-
-When hook functions on this hook list are called, the variable
-`js2-mode-ast' may or may not be set, depending on whether the
-parse tree is available. If the variable is nil, you can pass a
-callback to `js2-mode-wait-for-parse', and your callback will be
-called after the new parse tree is built. This can take some time
-in large files.")
-
-(defface js2-warning
- `((((class color) (background light))
- (:underline "orange"))
- (((class color) (background dark))
- (:underline "orange"))
- (t (:underline t)))
- "Face for JavaScript warnings."
- :group 'js2-mode)
-
-(defface js2-error
- `((((class color) (background light))
- (:foreground "red"))
- (((class color) (background dark))
- (:foreground "red"))
- (t (:foreground "red")))
- "Face for JavaScript errors."
- :group 'js2-mode)
-
-(defface js2-jsdoc-tag
- '((t :foreground "SlateGray"))
- "Face used to highlight @whatever tags in jsdoc comments."
- :group 'js2-mode)
-
-(defface js2-jsdoc-type
- '((t :foreground "SteelBlue"))
- "Face used to highlight {FooBar} types in jsdoc comments."
- :group 'js2-mode)
-
-(defface js2-jsdoc-value
- '((t :foreground "PeachPuff3"))
- "Face used to highlight tag values in jsdoc comments."
- :group 'js2-mode)
-
-(defface js2-function-param
- '((t :foreground "SeaGreen"))
- "Face used to highlight function parameters in javascript."
- :group 'js2-mode)
-
-(defface js2-instance-member
- '((t :foreground "DarkOrchid"))
- "Face used to highlight instance variables in javascript.
-Not currently used."
- :group 'js2-mode)
-
-(defface js2-private-member
- '((t :foreground "PeachPuff3"))
- "Face used to highlight calls to private methods in javascript.
-Not currently used."
- :group 'js2-mode)
-
-(defface js2-private-function-call
- '((t :foreground "goldenrod"))
- "Face used to highlight calls to private functions in javascript.
-Not currently used."
- :group 'js2-mode)
-
-(defface js2-jsdoc-html-tag-name
- (if js2-emacs22
- '((((class color) (min-colors 88) (background light))
- (:foreground "rosybrown"))
- (((class color) (min-colors 8) (background dark))
- (:foreground "yellow"))
- (((class color) (min-colors 8) (background light))
- (:foreground "magenta")))
- '((((type tty pc) (class color) (background light))
- (:foreground "magenta"))
- (((type tty pc) (class color) (background dark))
- (:foreground "yellow"))
- (t (:foreground "RosyBrown"))))
- "Face used to highlight jsdoc html tag names"
- :group 'js2-mode)
-
-(defface js2-jsdoc-html-tag-delimiter
- (if js2-emacs22
- '((((class color) (min-colors 88) (background light))
- (:foreground "dark khaki"))
- (((class color) (min-colors 8) (background dark))
- (:foreground "green"))
- (((class color) (min-colors 8) (background light))
- (:foreground "green")))
- '((((type tty pc) (class color) (background light))
- (:foreground "green"))
- (((type tty pc) (class color) (background dark))
- (:foreground "green"))
- (t (:foreground "dark khaki"))))
- "Face used to highlight brackets in jsdoc html tags."
- :group 'js2-mode)
-
-(defface js2-magic-paren
- '((t :underline t))
- "Face used to color parens that will be auto-overwritten."
- :group 'js2-mode)
-
-(defcustom js2-post-parse-callbacks nil
- "A list of callback functions invoked after parsing finishes.
-Currently, the main use for this function is to add synthetic
-declarations to `js2-recorded-assignments', which see."
- :type 'list
- :group 'js2-mode)
-
-(defface js2-external-variable
- '((t :foreground "orange"))
- "Face used to highlight assignments to undeclared variables.
-An undeclared variable is any variable not declared with var or let
-in the current scope or any lexically enclosing scope. If you assign
-to such a variable, then you are either expecting it to originate from
-another file, or you've got a potential bug."
- :group 'js2-mode)
-
-(defcustom js2-highlight-external-variables t
- "Non-nil to higlight assignments to undeclared variables."
- :type 'boolean
- :group 'js2-mode)
-
-(defcustom js2-auto-insert-catch-block t
- "Non-nil to insert matching catch block on open-curly after `try'."
- :type 'boolean
- :group 'js2-mode)
-
-(defvar js2-mode-map
- (let ((map (make-sparse-keymap))
- keys)
- (define-key map [mouse-1] #'js2-mode-show-node)
- (define-key map (kbd "C-m") #'js2-enter-key)
- (when js2-rebind-eol-bol-keys
- (define-key map (kbd "C-a") #'js2-beginning-of-line)
- (define-key map (kbd "C-e") #'js2-end-of-line))
- (define-key map (kbd "C-c C-e") #'js2-mode-hide-element)
- (define-key map (kbd "C-c C-s") #'js2-mode-show-element)
- (define-key map (kbd "C-c C-a") #'js2-mode-show-all)
- (define-key map (kbd "C-c C-f") #'js2-mode-toggle-hide-functions)
- (define-key map (kbd "C-c C-t") #'js2-mode-toggle-hide-comments)
- (define-key map (kbd "C-c C-o") #'js2-mode-toggle-element)
- (define-key map (kbd "C-c C-w") #'js2-mode-toggle-warnings-and-errors)
- (define-key map (kbd "C-c C-`") #'js2-next-error)
- ;; also define user's preference for next-error, if available
- (if (setq keys (where-is-internal #'next-error))
- (define-key map (car keys) #'js2-next-error))
- (define-key map (or (car (where-is-internal #'mark-defun))
- (kbd "M-C-h"))
- #'js2-mark-defun)
- (define-key map (or (car (where-is-internal #'narrow-to-defun))
- (kbd "C-x nd"))
- #'js2-narrow-to-defun)
- (define-key map [down-mouse-3] #'js2-down-mouse-3)
- (when js2-auto-indent-p
- (mapc (lambda (key)
- (define-key map key #'js2-insert-and-indent))
- js2-electric-keys))
-
- (define-key map [menu-bar javascript]
- (cons "JavaScript" (make-sparse-keymap "JavaScript")))
-
- (define-key map [menu-bar javascript customize-js2-mode]
- '(menu-item "Customize js2-mode" js2-mode-customize
- :help "Customize the behavior of this mode"))
-
- (define-key map [menu-bar javascript js2-force-refresh]
- '(menu-item "Force buffer refresh" js2-mode-reset
- :help "Re-parse the buffer from scratch"))
-
- (define-key map [menu-bar javascript separator-2]
- '("--"))
-
- (define-key map [menu-bar javascript next-error]
- '(menu-item "Next warning or error" js2-next-error
- :enabled (and js2-mode-ast
- (or (js2-ast-root-errors js2-mode-ast)
- (js2-ast-root-warnings js2-mode-ast)))
- :help "Move to next warning or error"))
-
- (define-key map [menu-bar javascript display-errors]
- '(menu-item "Show errors and warnings"
js2-mode-display-warnings-and-errors
- :visible (not js2-mode-show-parse-errors)
- :help "Turn on display of warnings and errors"))
-
- (define-key map [menu-bar javascript hide-errors]
- '(menu-item "Hide errors and warnings" js2-mode-hide-warnings-and-errors
- :visible js2-mode-show-parse-errors
- :help "Turn off display of warnings and errors"))
-
- (define-key map [menu-bar javascript separator-1]
- '("--"))
-
- (define-key map [menu-bar javascript js2-toggle-function]
- '(menu-item "Show/collapse element" js2-mode-toggle-element
- :help "Hide or show function body or comment"))
-
- (define-key map [menu-bar javascript show-comments]
- '(menu-item "Show block comments" js2-mode-toggle-hide-comments
- :visible js2-mode-comments-hidden
- :help "Expand all hidden block comments"))
-
- (define-key map [menu-bar javascript hide-comments]
- '(menu-item "Hide block comments" js2-mode-toggle-hide-comments
- :visible (not js2-mode-comments-hidden)
- :help "Show block comments as /*...*/"))
-
- (define-key map [menu-bar javascript show-all-functions]
- '(menu-item "Show function bodies" js2-mode-toggle-hide-functions
- :visible js2-mode-functions-hidden
- :help "Expand all hidden function bodies"))
-
- (define-key map [menu-bar javascript hide-all-functions]
- '(menu-item "Hide function bodies" js2-mode-toggle-hide-functions
- :visible (not js2-mode-functions-hidden)
- :help "Show {...} for all top-level function bodies"))
-
- map)
- "Keymap used in `js2-mode' buffers.")
-
-(defconst js2-mode-identifier-re "[a-zA-Z_$][a-zA-Z0-9_$]*")
-
-(defvar js2-mode-//-comment-re "^\\(\\s-*\\)//.+"
- "Matches a //-comment line. Must be first non-whitespace on line.
-First match-group is the leading whitespace.")
-
-(defvar js2-mode-hook nil)
-
-(js2-deflocal js2-mode-ast nil "Private variable.")
-(js2-deflocal js2-mode-parse-timer nil "Private variable.")
-(js2-deflocal js2-mode-buffer-dirty-p nil "Private variable.")
-(js2-deflocal js2-mode-parsing nil "Private variable.")
-(js2-deflocal js2-mode-node-overlay nil)
-
-(defvar js2-mode-show-overlay js2-mode-dev-mode-p
- "Debug: Non-nil to highlight AST nodes on mouse-down.")
-
-(js2-deflocal js2-mode-fontifications nil "Private variable")
-(js2-deflocal js2-mode-deferred-properties nil "Private variable")
-(js2-deflocal js2-imenu-recorder nil "Private variable")
-(js2-deflocal js2-imenu-function-map nil "Private variable")
-
-(defvar js2-paragraph-start
- "\\(@[a-zA-Z]+\\>\\|$\\)")
-
-;; Note that we also set a 'c-in-sws text property in html comments,
-;; so that `c-forward-sws' and `c-backward-sws' work properly.
-(defvar js2-syntactic-ws-start
- "\\s \\|/[*/]\\|[\n\r]\\|\\\\[\n\r]\\|\\s!\\|<!--\\|^\\s-*-->")
-
-(defvar js2-syntactic-ws-end
- "\\s \\|[\n\r/]\\|\\s!")
-
-(defvar js2-syntactic-eol
- (concat "\\s *\\(/\\*[^*\n\r]*"
- "\\(\\*+[^*\n\r/][^*\n\r]*\\)*"
- "\\*+/\\s *\\)*"
- "\\(//\\|/\\*[^*\n\r]*"
- "\\(\\*+[^*\n\r/][^*\n\r]*\\)*$"
- "\\|\\\\$\\|$\\)")
- "Copied from `java-mode'. Needed for some cc-engine functions.")
-
-(defvar js2-comment-prefix-regexp
- "//+\\|\\**")
-
-(defvar js2-comment-start-skip
- "\\(//+\\|/\\*+\\)\\s *")
-
-(defvar js2-mode-verbose-parse-p js2-mode-dev-mode-p
- "Non-nil to emit status messages during parsing.")
-
-(defvar js2-mode-functions-hidden nil "private variable")
-(defvar js2-mode-comments-hidden nil "private variable")
-
-(defvar js2-mode-syntax-table
- (let ((table (make-syntax-table)))
- (c-populate-syntax-table table)
- table)
- "Syntax table used in js2-mode buffers.")
-
-(defvar js2-mode-abbrev-table nil
- "Abbrev table in use in `js2-mode' buffers.")
-(define-abbrev-table 'js2-mode-abbrev-table ())
-
-(defvar js2-mode-pending-parse-callbacks nil
- "List of functions waiting to be notified that parse is finished.")
-
-(defvar js2-mode-last-indented-line -1)
-
-;;; Localizable error and warning messages
-
-;; Messages are copied from Rhino's Messages.properties.
-;; Many of the Java-specific messages have been elided.
-;; Add any js2-specific ones at the end, so we can keep
-;; this file synced with changes to Rhino's.
-
-(defvar js2-message-table
- (make-hash-table :test 'equal :size 250)
- "Contains localized messages for js2-mode.")
-
-;; TODO(stevey): construct this table at compile-time.
-(defmacro js2-msg (key &rest strings)
- `(puthash ,key (funcall #'concat ,@strings)
- js2-message-table))
-
-(defun js2-get-msg (msg-key)
- "Look up a localized message.
-MSG-KEY is a list of (MSG ARGS). If the message takes parameters,
-the correct number of ARGS must be provided."
- (let* ((key (if (listp msg-key) (car msg-key) msg-key))
- (args (if (listp msg-key) (cdr msg-key)))
- (msg (gethash key js2-message-table)))
- (if msg
- (apply #'format msg args)
- key))) ; default to showing the key
-
-(js2-msg "msg.dup.parms"
- "Duplicate parameter name '%s'.")
-
-(js2-msg "msg.too.big.jump"
- "Program too complex: jump offset too big.")
-
-(js2-msg "msg.too.big.index"
- "Program too complex: internal index exceeds 64K limit.")
-
-(js2-msg "msg.while.compiling.fn"
- "Encountered code generation error while compiling function '%s': %s")
-
-(js2-msg "msg.while.compiling.script"
- "Encountered code generation error while compiling script: %s")
-
-;; Context
-(js2-msg "msg.ctor.not.found"
- "Constructor for '%s' not found.")
-
-(js2-msg "msg.not.ctor"
- "'%s' is not a constructor.")
-
-;; FunctionObject
-(js2-msg "msg.varargs.ctor"
- "Method or constructor '%s' must be static "
- "with the signature (Context cx, Object[] args, "
- "Function ctorObj, boolean inNewExpr) "
- "to define a variable arguments constructor.")
-
-(js2-msg "msg.varargs.fun"
- "Method '%s' must be static with the signature "
- "(Context cx, Scriptable thisObj, Object[] args, Function funObj) "
- "to define a variable arguments function.")
-
-(js2-msg "msg.incompat.call"
- "Method '%s' called on incompatible object.")
-
-(js2-msg "msg.bad.parms"
- "Unsupported parameter type '%s' in method '%s'.")
-
-(js2-msg "msg.bad.method.return"
- "Unsupported return type '%s' in method '%s'.")
-
-(js2-msg "msg.bad.ctor.return"
- "Construction of objects of type '%s' is not supported.")
-
-(js2-msg "msg.no.overload"
- "Method '%s' occurs multiple times in class '%s'.")
-
-(js2-msg "msg.method.not.found"
- "Method '%s' not found in '%s'.")
-
-;; IRFactory
-
-(js2-msg "msg.bad.for.in.lhs"
- "Invalid left-hand side of for..in loop.")
-
-(js2-msg "msg.mult.index"
- "Only one variable allowed in for..in loop.")
-
-(js2-msg "msg.bad.for.in.destruct"
- "Left hand side of for..in loop must be an array of "
- "length 2 to accept key/value pair.")
-
-(js2-msg "msg.cant.convert"
- "Can't convert to type '%s'.")
-
-(js2-msg "msg.bad.assign.left"
- "Invalid assignment left-hand side.")
-
-(js2-msg "msg.bad.decr"
- "Invalid decerement operand.")
-
-(js2-msg "msg.bad.incr"
- "Invalid increment operand.")
-
-(js2-msg "msg.bad.yield"
- "yield must be in a function.")
-
-(js2-msg "msg.yield.parenthesized"
- "yield expression must be parenthesized.")
-
-;; NativeGlobal
-(js2-msg "msg.cant.call.indirect"
- "Function '%s' must be called directly, and not by way of a "
- "function of another name.")
-
-(js2-msg "msg.eval.nonstring"
- "Calling eval() with anything other than a primitive "
- "string value will simply return the value. "
- "Is this what you intended?")
-
-(js2-msg "msg.eval.nonstring.strict"
- "Calling eval() with anything other than a primitive "
- "string value is not allowed in strict mode.")
-
-(js2-msg "msg.bad.destruct.op"
- "Invalid destructuring assignment operator")
-
-;; NativeCall
-(js2-msg "msg.only.from.new"
- "'%s' may only be invoked from a `new' expression.")
-
-(js2-msg "msg.deprec.ctor"
- "The '%s' constructor is deprecated.")
-
-;; NativeFunction
-(js2-msg "msg.no.function.ref.found"
- "no source found to decompile function reference %s")
-
-(js2-msg "msg.arg.isnt.array"
- "second argument to Function.prototype.apply must be an array")
-
-;; NativeGlobal
-(js2-msg "msg.bad.esc.mask"
- "invalid string escape mask")
-
-;; NativeRegExp
-(js2-msg "msg.bad.quant"
- "Invalid quantifier %s")
-
-(js2-msg "msg.overlarge.backref"
- "Overly large back reference %s")
-
-(js2-msg "msg.overlarge.min"
- "Overly large minimum %s")
-
-(js2-msg "msg.overlarge.max"
- "Overly large maximum %s")
-
-(js2-msg "msg.zero.quant"
- "Zero quantifier %s")
-
-(js2-msg "msg.max.lt.min"
- "Maximum %s less than minimum")
-
-(js2-msg "msg.unterm.quant"
- "Unterminated quantifier %s")
-
-(js2-msg "msg.unterm.paren"
- "Unterminated parenthetical %s")
-
-(js2-msg "msg.unterm.class"
- "Unterminated character class %s")
-
-(js2-msg "msg.bad.range"
- "Invalid range in character class.")
-
-(js2-msg "msg.trail.backslash"
- "Trailing \\ in regular expression.")
-
-(js2-msg "msg.re.unmatched.right.paren"
- "unmatched ) in regular expression.")
-
-(js2-msg "msg.no.regexp"
- "Regular expressions are not available.")
-
-(js2-msg "msg.bad.backref"
- "back-reference exceeds number of capturing parentheses.")
-
-(js2-msg "msg.bad.regexp.compile"
- "Only one argument may be specified if the first "
- "argument to RegExp.prototype.compile is a RegExp object.")
-
-;; Parser
-(js2-msg "msg.got.syntax.errors"
- "Compilation produced %s syntax errors.")
-
-(js2-msg "msg.var.redecl"
- "TypeError: redeclaration of var %s.")
-
-(js2-msg "msg.const.redecl"
- "TypeError: redeclaration of const %s.")
-
-(js2-msg "msg.let.redecl"
- "TypeError: redeclaration of variable %s.")
-
-(js2-msg "msg.parm.redecl"
- "TypeError: redeclaration of formal parameter %s.")
-
-(js2-msg "msg.fn.redecl"
- "TypeError: redeclaration of function %s.")
-
-(js2-msg "msg.let.decl.not.in.block"
- "SyntaxError: let declaration not directly within block")
-
-;; NodeTransformer
-(js2-msg "msg.dup.label"
- "duplicated label")
-
-(js2-msg "msg.undef.label"
- "undefined label")
-
-(js2-msg "msg.bad.break"
- "unlabelled break must be inside loop or switch")
-
-(js2-msg "msg.continue.outside"
- "continue must be inside loop")
-
-(js2-msg "msg.continue.nonloop"
- "continue can only use labels of iteration statements")
-
-(js2-msg "msg.bad.throw.eol"
- "Line terminator is not allowed between the throw "
- "keyword and throw expression.")
-
-(js2-msg "msg.no.paren.parms"
- "missing ( before function parameters.")
-
-(js2-msg "msg.no.parm"
- "missing formal parameter")
-
-(js2-msg "msg.no.paren.after.parms"
- "missing ) after formal parameters")
-
-(js2-msg "msg.no.brace.body"
- "missing '{' before function body")
-
-(js2-msg "msg.no.brace.after.body"
- "missing } after function body")
-
-(js2-msg "msg.no.paren.cond"
- "missing ( before condition")
-
-(js2-msg "msg.no.paren.after.cond"
- "missing ) after condition")
-
-(js2-msg "msg.no.semi.stmt"
- "missing ; before statement")
-
-(js2-msg "msg.missing.semi"
- "missing ; after statement")
-
-(js2-msg "msg.no.name.after.dot"
- "missing name after . operator")
-
-(js2-msg "msg.no.name.after.coloncolon"
- "missing name after :: operator")
-
-(js2-msg "msg.no.name.after.dotdot"
- "missing name after .. operator")
-
-(js2-msg "msg.no.name.after.xmlAttr"
- "missing name after .@")
-
-(js2-msg "msg.no.bracket.index"
- "missing ] in index expression")
-
-(js2-msg "msg.no.paren.switch"
- "missing ( before switch expression")
-
-(js2-msg "msg.no.paren.after.switch"
- "missing ) after switch expression")
-
-(js2-msg "msg.no.brace.switch"
- "missing '{' before switch body")
-
-(js2-msg "msg.bad.switch"
- "invalid switch statement")
-
-(js2-msg "msg.no.colon.case"
- "missing : after case expression")
-
-(js2-msg "msg.double.switch.default"
- "double default label in the switch statement")
-
-(js2-msg "msg.no.while.do"
- "missing while after do-loop body")
-
-(js2-msg "msg.no.paren.for"
- "missing ( after for")
-
-(js2-msg "msg.no.semi.for"
- "missing ; after for-loop initializer")
-
-(js2-msg "msg.no.semi.for.cond"
- "missing ; after for-loop condition")
-
-(js2-msg "msg.in.after.for.name"
- "missing in after for")
-
-(js2-msg "msg.no.paren.for.ctrl"
- "missing ) after for-loop control")
-
-(js2-msg "msg.no.paren.with"
- "missing ( before with-statement object")
-
-(js2-msg "msg.no.paren.after.with"
- "missing ) after with-statement object")
-
-(js2-msg "msg.no.paren.after.let"
- "missing ( after let")
-
-(js2-msg "msg.no.paren.let"
- "missing ) after variable list")
-
-(js2-msg "msg.no.curly.let"
- "missing } after let statement")
-
-(js2-msg "msg.bad.return"
- "invalid return")
-
-(js2-msg "msg.no.brace.block"
- "missing } in compound statement")
-
-(js2-msg "msg.bad.label"
- "invalid label")
-
-(js2-msg "msg.bad.var"
- "missing variable name")
-
-(js2-msg "msg.bad.var.init"
- "invalid variable initialization")
-
-(js2-msg "msg.no.colon.cond"
- "missing : in conditional expression")
-
-(js2-msg "msg.no.paren.arg"
- "missing ) after argument list")
-
-(js2-msg "msg.no.bracket.arg"
- "missing ] after element list")
-
-(js2-msg "msg.bad.prop"
- "invalid property id")
-
-(js2-msg "msg.no.colon.prop"
- "missing : after property id")
-
-(js2-msg "msg.no.brace.prop"
- "missing } after property list")
-
-(js2-msg "msg.no.paren"
- "missing ) in parenthetical")
-
-(js2-msg "msg.reserved.id"
- "identifier is a reserved word")
-
-(js2-msg "msg.no.paren.catch"
- "missing ( before catch-block condition")
-
-(js2-msg "msg.bad.catchcond"
- "invalid catch block condition")
-
-(js2-msg "msg.catch.unreachable"
- "any catch clauses following an unqualified catch are unreachable")
-
-(js2-msg "msg.no.brace.try"
- "missing '{' before try block")
-
-(js2-msg "msg.no.brace.catchblock"
- "missing '{' before catch-block body")
-
-(js2-msg "msg.try.no.catchfinally"
- "'try' without 'catch' or 'finally'")
-
-(js2-msg "msg.no.return.value"
- "function %s does not always return a value")
-
-(js2-msg "msg.anon.no.return.value"
- "anonymous function does not always return a value")
-
-(js2-msg "msg.return.inconsistent"
- "return statement is inconsistent with previous usage")
-
-(js2-msg "msg.generator.returns"
- "TypeError: generator function '%s' returns a value")
-
-(js2-msg "msg.anon.generator.returns"
- "TypeError: anonymous generator function returns a value")
-
-(js2-msg "msg.syntax"
- "syntax error")
-
-(js2-msg "msg.unexpected.eof"
- "Unexpected end of file")
-
-(js2-msg "msg.XML.bad.form"
- "illegally formed XML syntax")
-
-(js2-msg "msg.XML.not.available"
- "XML runtime not available")
-
-(js2-msg "msg.too.deep.parser.recursion"
- "Too deep recursion while parsing")
-
-(js2-msg "msg.no.side.effects"
- "Code has no side effects")
-
-(js2-msg "msg.extra.trailing.comma"
- "Trailing comma is not legal in an ECMA-262 object initializer")
-
-(js2-msg "msg.array.trailing.comma"
- "Trailing comma yields different behavior across browsers")
-
-(js2-msg "msg.equal.as.assign"
- (concat "Test for equality (==) mistyped as assignment (=)?"
- " (parenthesize to suppress warning)"))
-
-(js2-msg "msg.var.hides.arg"
- "Variable %s hides argument")
-
-(js2-msg "msg.destruct.assign.no.init"
- "Missing = in destructuring declaration")
-
-;; ScriptRuntime
-(js2-msg "msg.no.properties"
- "%s has no properties.")
-
-(js2-msg "msg.invalid.iterator"
- "Invalid iterator value")
-
-(js2-msg "msg.iterator.primitive"
- "__iterator__ returned a primitive value")
-
-(js2-msg "msg.assn.create.strict"
- "Assignment to undeclared variable %s")
-
-(js2-msg "msg.ref.undefined.prop"
- "Reference to undefined property '%s'")
-
-(js2-msg "msg.prop.not.found"
- "Property %s not found.")
-
-(js2-msg "msg.invalid.type"
- "Invalid JavaScript value of type %s")
-
-(js2-msg "msg.primitive.expected"
- "Primitive type expected (had %s instead)")
-
-(js2-msg "msg.namespace.expected"
- "Namespace object expected to left of :: (found %s instead)")
-
-(js2-msg "msg.null.to.object"
- "Cannot convert null to an object.")
-
-(js2-msg "msg.undef.to.object"
- "Cannot convert undefined to an object.")
-
-(js2-msg "msg.cyclic.value"
- "Cyclic %s value not allowed.")
-
-(js2-msg "msg.is.not.defined"
- "'%s' is not defined.")
-
-(js2-msg "msg.undef.prop.read"
- "Cannot read property '%s' from %s")
-
-(js2-msg "msg.undef.prop.write"
- "Cannot set property '%s' of %s to '%s'")
-
-(js2-msg "msg.undef.prop.delete"
- "Cannot delete property '%s' of %s")
-
-(js2-msg "msg.undef.method.call"
- "Cannot call method '%s' of %s")
-
-(js2-msg "msg.undef.with"
- "Cannot apply 'with' to %s")
-
-(js2-msg "msg.isnt.function"
- "%s is not a function, it is %s.")
-
-(js2-msg "msg.isnt.function.in"
- "Cannot call property %s in object %s. "
- "It is not a function, it is '%s'.")
-
-(js2-msg "msg.function.not.found"
- "Cannot find function %s.")
-
-(js2-msg "msg.function.not.found.in"
- "Cannot find function %s in object %s.")
-
-(js2-msg "msg.isnt.xml.object"
- "%s is not an xml object.")
-
-(js2-msg "msg.no.ref.to.get"
- "%s is not a reference to read reference value.")
-
-(js2-msg "msg.no.ref.to.set"
- "%s is not a reference to set reference value to %s.")
-
-(js2-msg "msg.no.ref.from.function"
- "Function %s can not be used as the left-hand "
- "side of assignment or as an operand of ++ or -- operator.")
-
-(js2-msg "msg.bad.default.value"
- "Object's getDefaultValue() method returned an object.")
-
-(js2-msg "msg.instanceof.not.object"
- "Can't use instanceof on a non-object.")
-
-(js2-msg "msg.instanceof.bad.prototype"
- "'prototype' property of %s is not an object.")
-
-(js2-msg "msg.bad.radix"
- "illegal radix %s.")
-
-;; ScriptableObject
-(js2-msg "msg.default.value"
- "Cannot find default value for object.")
-
-(js2-msg "msg.zero.arg.ctor"
- "Cannot load class '%s' which has no zero-parameter constructor.")
-
-(js2-msg "msg.ctor.multiple.parms"
- "Can't define constructor or class %s since more than "
- "one constructor has multiple parameters.")
-
-(js2-msg "msg.extend.scriptable"
- "%s must extend ScriptableObject in order to define property %s.")
-
-(js2-msg "msg.bad.getter.parms"
- "In order to define a property, getter %s must have zero "
- "parameters or a single ScriptableObject parameter.")
-
-(js2-msg "msg.obj.getter.parms"
- "Expected static or delegated getter %s to take "
- "a ScriptableObject parameter.")
-
-(js2-msg "msg.getter.static"
- "Getter and setter must both be static or neither be static.")
-
-(js2-msg "msg.setter.return"
- "Setter must have void return type: %s")
-
-(js2-msg "msg.setter2.parms"
- "Two-parameter setter must take a ScriptableObject as "
- "its first parameter.")
-
-(js2-msg "msg.setter1.parms"
- "Expected single parameter setter for %s")
-
-(js2-msg "msg.setter2.expected"
- "Expected static or delegated setter %s to take two parameters.")
-
-(js2-msg "msg.setter.parms"
- "Expected either one or two parameters for setter.")
-
-(js2-msg "msg.setter.bad.type"
- "Unsupported parameter type '%s' in setter '%s'.")
-
-(js2-msg "msg.add.sealed"
- "Cannot add a property to a sealed object: %s.")
-
-(js2-msg "msg.remove.sealed"
- "Cannot remove a property from a sealed object: %s.")
-
-(js2-msg "msg.modify.sealed"
- "Cannot modify a property of a sealed object: %s.")
-
-(js2-msg "msg.modify.readonly"
- "Cannot modify readonly property: %s.")
-
-;; TokenStream
-(js2-msg "msg.missing.exponent"
- "missing exponent")
-
-(js2-msg "msg.caught.nfe"
- "number format error")
-
-(js2-msg "msg.unterminated.string.lit"
- "unterminated string literal")
-
-(js2-msg "msg.unterminated.comment"
- "unterminated comment")
-
-(js2-msg "msg.unterminated.re.lit"
- "unterminated regular expression literal")
-
-(js2-msg "msg.invalid.re.flag"
- "invalid flag after regular expression")
-
-(js2-msg "msg.no.re.input.for"
- "no input for %s")
-
-(js2-msg "msg.illegal.character"
- "illegal character")
-
-(js2-msg "msg.invalid.escape"
- "invalid Unicode escape sequence")
-
-(js2-msg "msg.bad.namespace"
- "not a valid default namespace statement. "
- "Syntax is: default xml namespace = EXPRESSION;")
-
-;; TokensStream warnings
-(js2-msg "msg.bad.octal.literal"
- "illegal octal literal digit %s; "
- "interpreting it as a decimal digit")
-
-(js2-msg "msg.reserved.keyword"
- "illegal usage of future reserved keyword %s; "
- "interpreting it as ordinary identifier")
-
-(js2-msg "msg.script.is.not.constructor"
- "Script objects are not constructors.")
-
-;; Arrays
-(js2-msg "msg.arraylength.bad"
- "Inappropriate array length.")
-
-;; Arrays
-(js2-msg "msg.arraylength.too.big"
- "Array length %s exceeds supported capacity limit.")
-
-;; URI
-(js2-msg "msg.bad.uri"
- "Malformed URI sequence.")
-
-;; Number
-(js2-msg "msg.bad.precision"
- "Precision %s out of range.")
-
-;; NativeGenerator
-(js2-msg "msg.send.newborn"
- "Attempt to send value to newborn generator")
-
-(js2-msg "msg.already.exec.gen"
- "Already executing generator")
-
-(js2-msg "msg.StopIteration.invalid"
- "StopIteration may not be changed to an arbitrary object.")
-
-;; Interpreter
-(js2-msg "msg.yield.closing"
- "Yield from closing generator")
-
-;;; Utilities
-
-(defun js2-delete-if (predicate list)
- "Remove all items satisfying PREDICATE in LIST."
- (loop for item in list
- if (not (funcall predicate item))
- collect item))
-
-(defun js2-position (element list)
- "Find 0-indexed position of ELEMENT in LIST comparing with `eq'.
-Returns nil if element is not found in the list."
- (let ((count 0)
- found)
- (while (and list (not found))
- (if (eq element (car list))
- (setq found t)
- (setq count (1+ count)
- list (cdr list))))
- (if found count)))
-
-(defun js2-find-if (predicate list)
- "Find first item satisfying PREDICATE in LIST."
- (let (result)
- (while (and list (not result))
- (if (funcall predicate (car list))
- (setq result (car list)))
- (setq list (cdr list)))
- result))
-
-(defmacro js2-time (form)
- "Evaluate FORM, discard result, and return elapsed time in sec"
- (declare (debug t))
- (let ((beg (make-symbol "--js2-time-beg--"))
- (delta (make-symbol "--js2-time-end--")))
- `(let ((,beg (current-time))
- ,delta)
- ,form
- (/ (truncate (* (- (float-time (current-time))
- (float-time ,beg)))
- 10000)
- 10000.0))))
-
-(defsubst js2-same-line (pos)
- "Return t if POS is on the same line as current point."
- (and (>= pos (point-at-bol))
- (<= pos (point-at-eol))))
-
-(defsubst js2-same-line-2 (p1 p2)
- "Return t if p1 is on the same line as p2."
- (save-excursion
- (goto-char p1)
- (js2-same-line p2)))
-
-(defun js2-code-bug ()
- "Signal an error when we encounter an unexpected code path."
- (error "failed assertion"))
-
-;; I'd like to associate errors with nodes, but for now the
-;; easiest thing to do is get the context info from the last token.
-(defsubst js2-record-parse-error (msg &optional arg pos len)
- (push (list (list msg arg)
- (or pos js2-token-beg)
- (or len (- js2-token-end js2-token-beg)))
- js2-parsed-errors))
-
-(defsubst js2-report-error (msg &optional msg-arg pos len)
- "Signal a syntax error or record a parse error."
- (if js2-recover-from-parse-errors
- (js2-record-parse-error msg msg-arg pos len)
- (signal 'js2-syntax-error
- (list msg
- js2-ts-lineno
- (save-excursion
- (goto-char js2-ts-cursor)
- (current-column))
- js2-ts-hit-eof))))
-
-(defsubst js2-report-warning (msg &optional msg-arg pos len)
- (if js2-compiler-report-warning-as-error
- (js2-report-error msg msg-arg pos len)
- (push (list (list msg msg-arg)
- (or pos js2-token-beg)
- (or len (- js2-token-end js2-token-beg)))
- js2-parsed-warnings)))
-
-(defsubst js2-add-strict-warning (msg-id &optional msg-arg beg end)
- (if js2-compiler-strict-mode
- (js2-report-warning msg-id msg-arg beg
- (and beg end (- end beg)))))
-
-(put 'js2-syntax-error 'error-conditions
- '(error syntax-error js2-syntax-error))
-(put 'js2-syntax-error 'error-message "Syntax error")
-
-(put 'js2-parse-error 'error-conditions
- '(error parse-error js2-parse-error))
-(put 'js2-parse-error 'error-message "Parse error")
-
-(defmacro js2-clear-flag (flags flag)
- `(setq ,flags (logand ,flags (lognot ,flag))))
-
-(defmacro js2-set-flag (flags flag)
- "Logical-or FLAG into FLAGS."
- `(setq ,flags (logior ,flags ,flag)))
-
-(defsubst js2-flag-set-p (flags flag)
- (/= 0 (logand flags flag)))
-
-(defsubst js2-flag-not-set-p (flags flag)
- (zerop (logand flags flag)))
-
-;; Stolen shamelessly from James Clark's nxml-mode.
-(defmacro js2-with-unmodifying-text-property-changes (&rest body)
- "Evaluate BODY without any text property changes modifying the buffer.
-Any text properties changes happen as usual but the changes are not treated as
-modifications to the buffer."
- (declare (indent 0) (debug t))
- (let ((modified (make-symbol "modified")))
- `(let ((,modified (buffer-modified-p))
- (inhibit-read-only t)
- (inhibit-modification-hooks t)
- (buffer-undo-list t)
- (deactivate-mark nil)
- ;; Apparently these avoid file locking problems.
- (buffer-file-name nil)
- (buffer-file-truename nil))
- (unwind-protect
- (progn ,@body)
- (unless ,modified
- (restore-buffer-modified-p nil))))))
-
-(defmacro js2-with-underscore-as-word-syntax (&rest body)
- "Evaluate BODY with the _ character set to be word-syntax."
- (declare (indent 0) (debug t))
- (let ((old-syntax (make-symbol "old-syntax")))
- `(let ((,old-syntax (string (char-syntax ?_))))
- (unwind-protect
- (progn
- (modify-syntax-entry ?_ "w" js2-mode-syntax-table)
- ,@body)
- (modify-syntax-entry ?_ ,old-syntax js2-mode-syntax-table)))))
-
-(defsubst js2-char-uppercase-p (c)
- "Return t if C is an uppercase character.
-Handles unicode and latin chars properly."
- (/= c (downcase c)))
-
-(defsubst js2-char-lowercase-p (c)
- "Return t if C is an uppercase character.
-Handles unicode and latin chars properly."
- (/= c (upcase c)))
-
-;;; AST struct and function definitions
-
-;; flags for ast node property 'member-type (used for e4x operators)
-(defvar js2-property-flag #x1 "property access: element is valid name")
-(defvar js2-attribute-flag #x2 "address@hidden or address@hidden")
-(defvar js2-descendants-flag #x4 "x..y or address@hidden")
-
-(defsubst js2-relpos (pos anchor)
- "Convert POS to be relative to ANCHOR.
-If POS is nil, returns nil."
- (and pos (- pos anchor)))
-
-(defsubst js2-make-pad (indent)
- (if (zerop indent)
- ""
- (make-string (* indent js2-basic-offset) ? )))
-
-(defsubst js2-visit-ast (node callback)
- "Visit every node in ast NODE with visitor CALLBACK.
-
-CALLBACK is a function that takes two arguments: (NODE END-P). It is
-called twice: once to visit the node, and again after all the node's
-children have been processed. The END-P argument is nil on the first
-call and non-nil on the second call. The return value of the callback
-affects the traversal: if non-nil, the children of NODE are processed.
-If the callback returns nil, or if the node has no children, then the
-callback is called immediately with a non-nil END-P argument.
-
-The node traversal is approximately lexical-order, although there
-are currently no guarantees around this."
- (let ((vfunc (get (aref node 0) 'js2-visitor)))
- ;; visit the node
- (when (funcall callback node nil)
- ;; visit the kids
- (cond
- ((eq vfunc 'js2-visit-none)
- nil) ; don't even bother calling it
- ;; Each AST node type has to define a `js2-visitor' function
- ;; that takes a node and a callback, and calls `js2-visit-ast'
- ;; on each child of the node.
- (vfunc
- (funcall vfunc node callback))
- (t
- (error "%s does not define a visitor-traversal function"
- (aref node 0)))))
- ;; call the end-visit
- (funcall callback node t)))
-
-(defstruct (js2-node
- (:constructor nil)) ; abstract
- "Base AST node type."
- (type -1) ; token type
- (pos -1) ; start position of this AST node in parsed input
- (len 1) ; num characters spanned by the node
- props ; optional node property list (an alist)
- parent) ; link to parent node; null for root
-
-(defsubst js2-node-get-prop (node prop &optional default)
- (or (cadr (assoc prop (js2-node-props node))) default))
-
-(defsubst js2-node-set-prop (node prop value)
- (setf (js2-node-props node)
- (cons (list prop value) (js2-node-props node))))
-
-(defsubst js2-fixup-starts (n nodes)
- "Adjust the start positions of NODES to be relative to N.
-Any node in the list may be nil, for convenience."
- (dolist (node nodes)
- (when node
- (setf (js2-node-pos node) (- (js2-node-pos node)
- (js2-node-pos n))))))
-
-(defsubst js2-node-add-children (parent &rest nodes)
- "Set parent node of NODES to PARENT, and return PARENT.
-Does nothing if we're not recording parent links.
-If any given node in NODES is nil, doesn't record that link."
- (js2-fixup-starts parent nodes)
- (dolist (node nodes)
- (and node
- (setf (js2-node-parent node) parent))))
-
-;; Non-recursive since it's called a frightening number of times.
-(defsubst js2-node-abs-pos (n)
- (let ((pos (js2-node-pos n)))
- (while (setq n (js2-node-parent n))
- (setq pos (+ pos (js2-node-pos n))))
- pos))
-
-(defsubst js2-node-abs-end (n)
- "Return absolute buffer position of end of N."
- (+ (js2-node-abs-pos n) (js2-node-len n)))
-
-;; It's important to make sure block nodes have a lisp list for the
-;; child nodes, to limit printing recursion depth in an AST that
-;; otherwise consists of defstruct vectors. Emacs will crash printing
-;; a sufficiently large vector tree.
-
-(defstruct (js2-block-node
- (:include js2-node)
- (:constructor nil)
- (:constructor make-js2-block-node (&key (type js2-BLOCK)
- (pos js2-token-beg)
- len
- props
- kids)))
- "A block of statements."
- kids) ; a lisp list of the child statement nodes
-
-(put 'cl-struct-js2-block-node 'js2-visitor 'js2-visit-block)
-(put 'cl-struct-js2-block-node 'js2-printer 'js2-print-block)
-
-(defsubst js2-visit-block (ast callback)
- "Visit the `js2-block-node' children of AST."
- (dolist (kid (js2-block-node-kids ast))
- (js2-visit-ast kid callback)))
-
-(defun js2-print-block (n i)
- (let ((pad (js2-make-pad i)))
- (insert pad "{\n")
- (dolist (kid (js2-block-node-kids n))
- (js2-print-ast kid (1+ i)))
- (insert pad "}")))
-
-(defstruct (js2-scope
- (:include js2-block-node)
- (:constructor nil)
- (:constructor make-js2-scope (&key (type js2-BLOCK)
- (pos js2-token-beg)
- len
- kids)))
- ;; The symbol-table is a LinkedHashMap<String,Symbol> in Rhino.
- ;; I don't have one of those handy, so I'll use an alist for now.
- ;; It's as fast as an emacs hashtable for up to about 50 elements,
- ;; and is much lighter-weight to construct (both CPU and mem).
- ;; The keys are interned strings (symbols) for faster lookup.
- ;; Should switch to hybrid alist/hashtable eventually.
- symbol-table ; an alist of (symbol . js2-symbol)
- parent-scope ; a `js2-scope'
- top) ; top-level `js2-scope' (script/function)
-
-(put 'cl-struct-js2-scope 'js2-visitor 'js2-visit-none)
-(put 'cl-struct-js2-scope 'js2-printer 'js2-print-none)
-
-(defun js2-scope-set-parent-scope (scope parent)
- (setf (js2-scope-parent-scope scope) parent
- (js2-scope-top scope) (if (null parent)
- scope
- (js2-scope-top parent))))
-
-(defun js2-node-get-enclosing-scope (node)
- "Return the innermost `js2-scope' node surrounding NODE.
-Returns nil if there is no enclosing scope node."
- (let ((parent (js2-node-parent node)))
- (while (not (js2-scope-p parent))
- (setq parent (js2-node-parent parent)))
- parent))
-
-(defun js2-get-defining-scope (scope name)
- "Search up scope chain from SCOPE looking for NAME, a string or symbol.
-Returns `js2-scope' in which NAME is defined, or nil if not found."
- (let ((sym (if (symbolp name)
- name
- (intern name)))
- table
- result
- (continue t))
- (while (and scope continue)
- (if (and (setq table (js2-scope-symbol-table scope))
- (assq sym table))
- (setq continue nil
- result scope)
- (setq scope (js2-scope-parent-scope scope))))
- result))
-
-(defsubst js2-scope-get-symbol (scope name)
- "Return symbol table entry for NAME in SCOPE.
-NAME can be a string or symbol. Returns a `js2-symbol' or nil if not found."
- (and (js2-scope-symbol-table scope)
- (cdr (assq (if (symbolp name)
- name
- (intern name))
- (js2-scope-symbol-table scope)))))
-
-(defsubst js2-scope-put-symbol (scope name symbol)
- "Enter SYMBOL into symbol-table for SCOPE under NAME.
-NAME can be a lisp symbol or string. SYMBOL is a `js2-symbol'."
- (let* ((table (js2-scope-symbol-table scope))
- (sym (if (symbolp name) name (intern name)))
- (entry (assq sym table)))
- (if entry
- (setcdr entry symbol)
- (push (cons sym symbol)
- (js2-scope-symbol-table scope)))))
-
-(defstruct (js2-symbol
- (:constructor nil)
- (:constructor make-js2-symbol (decl-type name &optional ast-node)))
- "A symbol table entry."
- ;; One of js2-FUNCTION, js2-LP (for parameters), js2-VAR,
- ;; js2-LET, or js2-CONST
- decl-type
- name ; string
- ast-node) ; a `js2-node'
-
-(defstruct (js2-error-node
- (:include js2-node)
- (:constructor nil) ; silence emacs21 byte-compiler
- (:constructor make-js2-error-node (&key (type js2-ERROR)
- (pos js2-token-beg)
- len)))
- "AST node representing a parse error.")
-
-(put 'cl-struct-js2-error-node 'js2-visitor 'js2-visit-none)
-(put 'cl-struct-js2-error-node 'js2-printer 'js2-print-none)
-
-(defstruct (js2-script-node
- (:include js2-scope)
- (:constructor nil)
- (:constructor make-js2-script-node (&key (type js2-SCRIPT)
- (pos js2-token-beg)
- len
- var-decls
- fun-decls)))
- functions ; lisp list of nested functions
- regexps ; lisp list of (string . flags)
- symbols ; alist (every symbol gets unique index)
- (param-count 0)
- var-names ; vector of string names
- consts ; bool-vector matching var-decls
- (temp-number 0)) ; for generating temp variables
-
-(put 'cl-struct-js2-script-node 'js2-visitor 'js2-visit-block)
-(put 'cl-struct-js2-script-node 'js2-printer 'js2-print-script)
-
-(defun js2-print-script (node indent)
- (dolist (kid (js2-block-node-kids node))
- (js2-print-ast kid indent)))
-
-(defstruct (js2-ast-root
- (:include js2-script-node)
- (:constructor nil)
- (:constructor make-js2-ast-root (&key (type js2-SCRIPT)
- (pos js2-token-beg)
- len
- buffer)))
- "The root node of a js2 AST."
- buffer ; the source buffer from which the code was parsed
- comments ; a lisp list of comments, ordered by start position
- errors ; a lisp list of errors found during parsing
- warnings ; a lisp list of warnings found during parsing
- node-count) ; number of nodes in the tree, including the root
-
-(put 'cl-struct-js2-ast-root 'js2-visitor 'js2-visit-ast-root)
-(put 'cl-struct-js2-ast-root 'js2-printer 'js2-print-script)
-
-(defun js2-visit-ast-root (ast callback)
- (dolist (kid (js2-ast-root-kids ast))
- (js2-visit-ast kid callback))
- (dolist (comment (js2-ast-root-comments ast))
- (js2-visit-ast comment callback)))
-
-(defstruct (js2-comment-node
- (:include js2-node)
- (:constructor nil)
- (:constructor make-js2-comment-node (&key (type js2-COMMENT)
- (pos js2-token-beg)
- len
- (format
js2-ts-comment-type))))
- format) ; 'line, 'block, 'jsdoc or 'html
-
-(put 'cl-struct-js2-comment-node 'js2-visitor 'js2-visit-none)
-(put 'cl-struct-js2-comment-node 'js2-printer 'js2-print-comment)
-
-(defun js2-print-comment (n i)
- ;; We really ought to link end-of-line comments to their nodes.
- ;; Or maybe we could add a new comment type, 'endline.
- (insert (js2-make-pad i)
- (js2-node-string n)))
-
-(defstruct (js2-expr-stmt-node
- (:include js2-node)
- (:constructor nil)
- (:constructor make-js2-expr-stmt-node (&key (type js2-EXPR_VOID)
- (pos js2-ts-cursor)
- len
- expr)))
- "An expression statement."
- expr)
-
-(defsubst js2-expr-stmt-node-set-has-result (node)
- "Change the node type to `js2-EXPR_RESULT'. Used for code generation."
- (setf (js2-node-type node) js2-EXPR_RESULT))
-
-(put 'cl-struct-js2-expr-stmt-node 'js2-visitor 'js2-visit-expr-stmt-node)
-(put 'cl-struct-js2-expr-stmt-node 'js2-printer 'js2-print-expr-stmt-node)
-
-(defun js2-visit-expr-stmt-node (n v)
- (js2-visit-ast (js2-expr-stmt-node-expr n) v))
-
-(defun js2-print-expr-stmt-node (n indent)
- (js2-print-ast (js2-expr-stmt-node-expr n) indent)
- (insert ";\n"))
-
-(defstruct (js2-loop-node
- (:include js2-scope)
- (:constructor nil))
- "Abstract supertype of loop nodes."
- body ; a `js2-block-node'
- lp ; position of left-paren, nil if omitted
- rp) ; position of right-paren, nil if omitted
-
-(defstruct (js2-do-node
- (:include js2-loop-node)
- (:constructor nil)
- (:constructor make-js2-do-node (&key (type js2-DO)
- (pos js2-token-beg)
- len
- body
- condition
- while-pos
- lp
- rp)))
- "AST node for do-loop."
- condition ; while (expression)
- while-pos) ; buffer position of 'while' keyword
-
-(put 'cl-struct-js2-do-node 'js2-visitor 'js2-visit-do-node)
-(put 'cl-struct-js2-do-node 'js2-printer 'js2-print-do-node)
-
-(defun js2-visit-do-node (n v)
- (js2-visit-ast (js2-do-node-body n) v)
- (js2-visit-ast (js2-do-node-condition n) v))
-
-(defun js2-print-do-node (n i)
- (let ((pad (js2-make-pad i)))
- (insert pad "do {\n")
- (dolist (kid (js2-block-node-kids (js2-do-node-body n)))
- (js2-print-ast kid (1+ i)))
- (insert pad "} while (")
- (js2-print-ast (js2-do-node-condition n) 0)
- (insert ");\n")))
-
-(defstruct (js2-while-node
- (:include js2-loop-node)
- (:constructor nil)
- (:constructor make-js2-while-node (&key (type js2-WHILE)
- (pos js2-token-beg)
- len
- body
- condition
- lp
- rp)))
- "AST node for while-loop."
- condition) ; while-condition
-
-(put 'cl-struct-js2-while-node 'js2-visitor 'js2-visit-while-node)
-(put 'cl-struct-js2-while-node 'js2-printer 'js2-print-while-node)
-
-(defun js2-visit-while-node (n v)
- (js2-visit-ast (js2-while-node-condition n) v)
- (js2-visit-ast (js2-while-node-body n) v))
-
-(defun js2-print-while-node (n i)
- (let ((pad (js2-make-pad i)))
- (insert pad "while (")
- (js2-print-ast (js2-while-node-condition n) 0)
- (insert ") {\n")
- (js2-print-body (js2-while-node-body n) (1+ i))
- (insert pad "}\n")))
-
-(defstruct (js2-for-node
- (:include js2-loop-node)
- (:constructor nil)
- (:constructor make-js2-for-node (&key (type js2-FOR)
- (pos js2-ts-cursor)
- len
- body
- init
- condition
- update
- lp
- rp)))
- "AST node for a C-style for-loop."
- init ; initialization expression
- condition ; loop condition
- update) ; update clause
-
-(put 'cl-struct-js2-for-node 'js2-visitor 'js2-visit-for-node)
-(put 'cl-struct-js2-for-node 'js2-printer 'js2-print-for-node)
-
-(defun js2-visit-for-node (n v)
- (js2-visit-ast (js2-for-node-init n) v)
- (js2-visit-ast (js2-for-node-condition n) v)
- (js2-visit-ast (js2-for-node-update n) v)
- (js2-visit-ast (js2-for-node-body n) v))
-
-(defun js2-print-for-node (n i)
- (let ((pad (js2-make-pad i)))
- (insert pad "for (")
- (js2-print-ast (js2-for-node-init n) 0)
- (insert "; ")
- (js2-print-ast (js2-for-node-condition n) 0)
- (insert "; ")
- (js2-print-ast (js2-for-node-update n) 0)
- (insert ") {\n")
- (js2-print-body (js2-for-node-body n) (1+ i))
- (insert pad "}\n")))
-
-(defstruct (js2-for-in-node
- (:include js2-loop-node)
- (:constructor nil)
- (:constructor make-js2-for-in-node (&key (type js2-FOR)
- (pos js2-ts-cursor)
- len
- body
- iterator
- object
- in-pos
- each-pos
- foreach-p
- lp
- rp)))
- "AST node for a for..in loop."
- iterator ; [var] foo in ...
- object ; object over which we're iterating
- in-pos ; buffer position of 'in' keyword
- each-pos ; buffer position of 'each' keyword, if foreach-p
- foreach-p) ; t if it's a for-each loop
-
-(put 'cl-struct-js2-for-in-node 'js2-visitor 'js2-visit-for-in-node)
-(put 'cl-struct-js2-for-in-node 'js2-printer 'js2-print-for-in-node)
-
-(defun js2-visit-for-in-node (n v)
- (js2-visit-ast (js2-for-in-node-iterator n) v)
- (js2-visit-ast (js2-for-in-node-object n) v)
- (js2-visit-ast (js2-for-in-node-body n) v))
-
-(defun js2-print-for-in-node (n i)
- (let ((pad (js2-make-pad i))
- (foreach (js2-for-in-node-foreach-p n)))
- (insert pad "for ")
- (if foreach
- (insert "each "))
- (insert "(")
- (js2-print-ast (js2-for-in-node-iterator n) 0)
- (insert " in ")
- (js2-print-ast (js2-for-in-node-object n) 0)
- (insert ") {\n")
- (js2-print-body (js2-for-in-node-body n) (1+ i))
- (insert pad "}\n")))
-
-(defstruct (js2-return-node
- (:include js2-node)
- (:constructor nil)
- (:constructor make-js2-return-node (&key (type js2-RETURN)
- (pos js2-ts-cursor)
- len
- retval)))
- "AST node for a return statement."
- retval) ; expression to return, or 'undefined
-
-(put 'cl-struct-js2-return-node 'js2-visitor 'js2-visit-return-node)
-(put 'cl-struct-js2-return-node 'js2-printer 'js2-print-return-node)
-
-(defun js2-visit-return-node (n v)
- (if (js2-return-node-retval n)
- (js2-visit-ast (js2-return-node-retval n) v)))
-
-(defun js2-print-return-node (n i)
- (insert (js2-make-pad i) "return")
- (when (js2-return-node-retval n)
- (insert " ")
- (js2-print-ast (js2-return-node-retval n) 0))
- (insert ";\n"))
-
-(defstruct (js2-if-node
- (:include js2-node)
- (:constructor nil)
- (:constructor make-js2-if-node (&key (type js2-IF)
- (pos js2-ts-cursor)
- len
- condition
- then-part
- else-pos
- else-part
- lp
- rp)))
- "AST node for an if-statement."
- condition ; expression
- then-part ; statement or block
- else-pos ; optional buffer position of 'else' keyword
- else-part ; optional statement or block
- lp ; position of left-paren, nil if omitted
- rp) ; position of right-paren, nil if omitted
-
-(put 'cl-struct-js2-if-node 'js2-visitor 'js2-visit-if-node)
-(put 'cl-struct-js2-if-node 'js2-printer 'js2-print-if-node)
-
-(defun js2-visit-if-node (n v)
- (js2-visit-ast (js2-if-node-condition n) v)
- (js2-visit-ast (js2-if-node-then-part n) v)
- (if (js2-if-node-else-part n)
- (js2-visit-ast (js2-if-node-else-part n) v)))
-
-(defun js2-print-if-node (n i)
- (let ((pad (js2-make-pad i))
- (then-part (js2-if-node-then-part n))
- (else-part (js2-if-node-else-part n)))
- (insert pad "if (")
- (js2-print-ast (js2-if-node-condition n) 0)
- (insert ") {\n")
- (js2-print-body then-part (1+ i))
- (insert pad "}")
- (cond
- ((not else-part)
- (insert "\n"))
- ((js2-if-node-p else-part)
- (insert " else ")
- (js2-print-body else-part i))
- (t
- (insert " else {\n")
- (js2-print-body else-part (1+ i))
- (insert pad "}\n")))))
-
-(defstruct (js2-try-node
- (:include js2-node)
- (:constructor nil)
- (:constructor make-js2-try-node (&key (type js2-TRY)
- (pos js2-ts-cursor)
- len
- try-block
- catch-clauses
- finally-block)))
- "AST node for a try-statement."
- try-block
- catch-clauses ; a lisp list of `js2-catch-node'
- finally-block) ; a `js2-finally-node'
-
-(put 'cl-struct-js2-try-node 'js2-visitor 'js2-visit-try-node)
-(put 'cl-struct-js2-try-node 'js2-printer 'js2-print-try-node)
-
-(defun js2-visit-try-node (n v)
- (js2-visit-ast (js2-try-node-try-block n) v)
- (dolist (clause (js2-try-node-catch-clauses n))
- (js2-visit-ast clause v))
- (if (js2-try-node-finally-block n)
- (js2-visit-ast (js2-try-node-finally-block n) v)))
-
-(defun js2-print-try-node (n i)
- (let ((pad (js2-make-pad i))
- (catches (js2-try-node-catch-clauses n))
- (finally (js2-try-node-finally-block n)))
- (insert pad "try {\n")
- (js2-print-body (js2-try-node-try-block n) (1+ i))
- (insert pad "}")
- (when catches
- (dolist (catch catches)
- (js2-print-ast catch i)))
- (if finally
- (js2-print-ast finally i)
- (insert "\n"))))
-
-(defstruct (js2-catch-node
- (:include js2-node)
- (:constructor nil)
- (:constructor make-js2-catch-node (&key (type js2-CATCH)
- (pos js2-ts-cursor)
- len
- var-name
- guard-kwd
- guard-expr
- block
- lp
- rp)))
- "AST node for a catch clause."
- var-name ; a `js2-name-node'
- guard-kwd ; relative buffer position of "if" in "catch (x if ...)"
- guard-expr ; catch condition, a `js2-node'
- block ; statements, a `js2-block-node'
- lp ; buffer position of left-paren, nil if omitted
- rp) ; buffer position of right-paren, nil if omitted
-
-(put 'cl-struct-js2-catch-node 'js2-visitor 'js2-visit-catch-node)
-(put 'cl-struct-js2-catch-node 'js2-printer 'js2-print-catch-node)
-
-(defun js2-visit-catch-node (n v)
- (js2-visit-ast (js2-catch-node-var-name n) v)
- (when (js2-catch-node-guard-kwd n)
- (js2-visit-ast (js2-catch-node-guard-expr n) v))
- (js2-visit-ast (js2-catch-node-block n) v))
-
-(defun js2-print-catch-node (n i)
- (let ((pad (js2-make-pad i))
- (guard-kwd (js2-catch-node-guard-kwd n))
- (guard-expr (js2-catch-node-guard-expr n)))
- (insert " catch (")
- (js2-print-ast (js2-catch-node-var-name n) 0)
- (when guard-kwd
- (insert " if ")
- (js2-print-ast guard-expr 0))
- (insert ") {\n")
- (js2-print-body (js2-catch-node-block n) (1+ i))
- (insert pad "}")))
-
-(defstruct (js2-finally-node
- (:include js2-node)
- (:constructor nil)
- (:constructor make-js2-finally-node (&key (type js2-FINALLY)
- (pos js2-ts-cursor)
- len
- body)))
- "AST node for a finally clause."
- body) ; a `js2-node', often but not always a block node
-
-(put 'cl-struct-js2-finally-node 'js2-visitor 'js2-visit-finally-node)
-(put 'cl-struct-js2-finally-node 'js2-printer 'js2-print-finally-node)
-
-(defun js2-visit-finally-node (n v)
- (js2-visit-ast (js2-finally-node-body n) v))
-
-(defun js2-print-finally-node (n i)
- (let ((pad (js2-make-pad i)))
- (insert " finally {\n")
- (js2-print-body (js2-finally-node-body n) (1+ i))
- (insert pad "}\n")))
-
-(defstruct (js2-switch-node
- (:include js2-node)
- (:constructor nil)
- (:constructor make-js2-switch-node (&key (type js2-SWITCH)
- (pos js2-ts-cursor)
- len
- discriminant
- cases
- lp
- rp)))
- "AST node for a switch statement."
- discriminant ; a `js2-node' (switch expression)
- cases ; a lisp list of `js2-case-node'
- lp ; position of open-paren for discriminant, nil if omitted
- rp) ; position of close-paren for discriminant, nil if omitted
-
-(put 'cl-struct-js2-switch-node 'js2-visitor 'js2-visit-switch-node)
-(put 'cl-struct-js2-switch-node 'js2-printer 'js2-print-switch-node)
-
-(defun js2-visit-switch-node (n v)
- (js2-visit-ast (js2-switch-node-discriminant n) v)
- (dolist (c (js2-switch-node-cases n))
- (js2-visit-ast c v)))
-
-(defun js2-print-switch-node (n i)
- (let ((pad (js2-make-pad i))
- (cases (js2-switch-node-cases n)))
- (insert pad "switch (")
- (js2-print-ast (js2-switch-node-discriminant n) 0)
- (insert ") {\n")
- (dolist (case cases)
- (js2-print-ast case i))
- (insert pad "}\n")))
-
-(defstruct (js2-case-node
- (:include js2-block-node)
- (:constructor nil)
- (:constructor make-js2-case-node (&key (type js2-CASE)
- (pos js2-ts-cursor)
- len
- kids
- expr)))
- "AST node for a case clause of a switch statement."
- expr) ; the case expression (nil for default)
-
-(put 'cl-struct-js2-case-node 'js2-visitor 'js2-visit-case-node)
-(put 'cl-struct-js2-case-node 'js2-printer 'js2-print-case-node)
-
-(defun js2-visit-case-node (n v)
- (if (js2-case-node-expr n) ; nil for default: case
- (js2-visit-ast (js2-case-node-expr n) v))
- (js2-visit-block n v))
-
-(defun js2-print-case-node (n i)
- (let ((pad (js2-make-pad i))
- (expr (js2-case-node-expr n)))
- (insert pad)
- (if (null expr)
- (insert "default:\n")
- (insert "case ")
- (js2-print-ast expr 0)
- (insert ":\n"))
- (dolist (kid (js2-case-node-kids n))
- (js2-print-ast kid (1+ i)))))
-
-(defstruct (js2-throw-node
- (:include js2-node)
- (:constructor nil)
- (:constructor make-js2-throw-node (&key (type js2-THROW)
- (pos js2-ts-cursor)
- len
- expr)))
- "AST node for a throw statement."
- expr) ; the expression to throw
-
-(put 'cl-struct-js2-throw-node 'js2-visitor 'js2-visit-throw-node)
-(put 'cl-struct-js2-throw-node 'js2-printer 'js2-print-throw-node)
-
-(defun js2-visit-throw-node (n v)
- (js2-visit-ast (js2-throw-node-expr n) v))
-
-(defun js2-print-throw-node (n i)
- (insert (js2-make-pad i) "throw ")
- (js2-print-ast (js2-throw-node-expr n) 0)
- (insert ";\n"))
-
-(defstruct (js2-with-node
- (:include js2-node)
- (:constructor nil)
- (:constructor make-js2-with-node (&key (type js2-WITH)
- (pos js2-ts-cursor)
- len
- object
- body
- lp
- rp)))
- "AST node for a with-statement."
- object
- body
- lp ; buffer position of left-paren around object, nil if omitted
- rp) ; buffer position of right-paren around object, nil if omitted
-
-(put 'cl-struct-js2-with-node 'js2-visitor 'js2-visit-with-node)
-(put 'cl-struct-js2-with-node 'js2-printer 'js2-print-with-node)
-
-(defun js2-visit-with-node (n v)
- (js2-visit-ast (js2-with-node-object n) v)
- (js2-visit-ast (js2-with-node-body n) v))
-
-(defun js2-print-with-node (n i)
- (let ((pad (js2-make-pad i)))
- (insert pad "with (")
- (js2-print-ast (js2-with-node-object n) 0)
- (insert ") {\n")
- (js2-print-body (js2-with-node-body n) (1+ i))
- (insert pad "}\n")))
-
-(defstruct (js2-label-node
- (:include js2-node)
- (:constructor nil)
- (:constructor make-js2-label-node (&key (type js2-LABEL)
- (pos js2-ts-cursor)
- len
- name)))
- "AST node for a statement label or case label."
- name ; a string
- loop) ; for validating and code-generating continue-to-label
-
-(put 'cl-struct-js2-label-node 'js2-visitor 'js2-visit-none)
-(put 'cl-struct-js2-label-node 'js2-printer 'js2-print-label)
-
-(defun js2-print-label (n i)
- (insert (js2-make-pad i)
- (js2-label-node-name n)
- ":\n"))
-
-(defstruct (js2-labeled-stmt-node
- (:include js2-node)
- (:constructor nil)
- ;; type needs to be in `js2-side-effecting-tokens' to avoid
spurious
- ;; no-side-effects warnings, hence js2-EXPR_RESULT.
- (:constructor make-js2-labeled-stmt-node (&key (type
js2-EXPR_RESULT)
- (pos js2-ts-cursor)
- len
- labels
- stmt)))
- "AST node for a statement with one or more labels.
-Multiple labels for a statement are collapsed into the labels field."
- labels ; lisp list of `js2-label-node'
- stmt) ; the statement these labels are for
-
-(put 'cl-struct-js2-labeled-stmt-node 'js2-visitor 'js2-visit-labeled-stmt)
-(put 'cl-struct-js2-labeled-stmt-node 'js2-printer 'js2-print-labeled-stmt)
-
-(defun js2-get-label-by-name (lbl-stmt name)
- "Return a `js2-label-node' by NAME from LBL-STMT's labels list.
-Returns nil if no such label is in the list."
- (let ((label-list (js2-labeled-stmt-node-labels lbl-stmt))
- result)
- (while (and label-list (not result))
- (if (string= (js2-label-node-name (car label-list)) name)
- (setq result (car label-list))
- (setq label-list (cdr label-list))))
- result))
-
-(defun js2-visit-labeled-stmt (n v)
- (dolist (label (js2-labeled-stmt-node-labels n))
- (js2-visit-ast label v))
- (js2-visit-ast (js2-labeled-stmt-node-stmt n) v))
-
-(defun js2-print-labeled-stmt (n i)
- (dolist (label (js2-labeled-stmt-node-labels n))
- (js2-print-ast label i))
- (js2-print-ast (js2-labeled-stmt-node-stmt n) (1+ i)))
-
-(defun js2-labeled-stmt-node-contains (node label)
- "Return t if NODE contains LABEL in its label set.
-NODE is a `js2-labels-node'. LABEL is an identifier."
- (loop for nl in (js2-labeled-stmt-node-labels node)
- if (string= label (js2-label-node-name nl))
- return t
- finally return nil))
-
-(defsubst js2-labeled-stmt-node-add-label (node label)
- "Add a `js2-label-node' to the label set for this statement."
- (setf (js2-labeled-stmt-node-labels node)
- (nconc (js2-labeled-stmt-node-labels node) (list label))))
-
-(defstruct (js2-jump-node
- (:include js2-node)
- (:constructor nil))
- "Abstract supertype of break and continue nodes."
- label ; `js2-name-node' for location of label identifier, if present
- target) ; target js2-labels-node or loop/switch statement
-
-(defun js2-visit-jump-node (n v)
- ;; we don't visit the target, since it's a back-link
- (if (js2-jump-node-label n)
- (js2-visit-ast (js2-jump-node-label n) v)))
-
-(defstruct (js2-break-node
- (:include js2-jump-node)
- (:constructor nil)
- (:constructor make-js2-break-node (&key (type js2-BREAK)
- (pos js2-ts-cursor)
- len
- label
- target)))
- "AST node for a break statement.
-The label field is a `js2-name-node', possibly nil, for the named label
-if provided. E.g. in 'break foo', it represents 'foo'. The target field
-is the target of the break - a label node or enclosing loop/switch statement.")
-
-(put 'cl-struct-js2-break-node 'js2-visitor 'js2-visit-jump-node)
-(put 'cl-struct-js2-break-node 'js2-printer 'js2-print-break-node)
-
-(defun js2-print-break-node (n i)
- (insert (js2-make-pad i) "break")
- (when (js2-break-node-label n)
- (insert " ")
- (js2-print-ast (js2-break-node-label n) 0))
- (insert ";\n"))
-
-(defstruct (js2-continue-node
- (:include js2-jump-node)
- (:constructor nil)
- (:constructor make-js2-continue-node (&key (type js2-CONTINUE)
- (pos js2-ts-cursor)
- len
- label
- target)))
- "AST node for a continue statement.
-The label field is the user-supplied enclosing label name, a `js2-name-node'.
-It is nil if continue specifies no label. The target field is the jump target:
-a `js2-label-node' or the innermost enclosing loop.")
-
-(put 'cl-struct-js2-continue-node 'js2-visitor 'js2-visit-jump-node)
-(put 'cl-struct-js2-continue-node 'js2-printer 'js2-print-continue-node)
-
-(defun js2-print-continue-node (n i)
- (insert (js2-make-pad i) "continue")
- (when (js2-continue-node-label n)
- (insert " ")
- (js2-print-ast (js2-continue-node-label n) 0))
- (insert ";\n"))
-
-(defstruct (js2-function-node
- (:include js2-script-node)
- (:constructor nil)
- (:constructor make-js2-function-node (&key (type js2-FUNCTION)
- (pos js2-ts-cursor)
- len
- (ftype 'FUNCTION)
- (form
'FUNCTION_STATEMENT)
- (name "")
- params
- body
- lp
- rp)))
- "AST node for a function declaration.
-The `params' field is a lisp list of nodes. Each node is either a simple
-`js2-name-node', or if it's a destructuring-assignment parameter, a
-`js2-array-node' or `js2-object-node'."
- ftype ; FUNCTION, GETTER or SETTER
- form ; FUNCTION_{STATEMENT|EXPRESSION|EXPRESSION_STATEMENT}
- name ; function name (a `js2-name-node', or nil if anonymous)
- params ; a lisp list of destructuring forms or simple name nodes
- body ; a `js2-block-node' or expression node (1.8 only)
- lp ; position of arg-list open-paren, or nil if omitted
- rp ; position of arg-list close-paren, or nil if omitted
- ignore-dynamic ; ignore value of the dynamic-scope flag (interpreter only)
- needs-activation ; t if we need an activation object for this frame
- is-generator ; t if this function contains a yield
- member-expr) ; nonstandard Ecma extension from Rhino
-
-(put 'cl-struct-js2-function-node 'js2-visitor 'js2-visit-function-node)
-(put 'cl-struct-js2-function-node 'js2-printer 'js2-print-function-node)
-
-(defun js2-visit-function-node (n v)
- (if (js2-function-node-name n)
- (js2-visit-ast (js2-function-node-name n) v))
- (dolist (p (js2-function-node-params n))
- (js2-visit-ast p v))
- (js2-visit-ast (js2-function-node-body n) v))
-
-(defun js2-print-function-node (n i)
- (let ((pad (js2-make-pad i))
- (getter (js2-node-get-prop n 'GETTER_SETTER))
- (name (js2-function-node-name n))
- (params (js2-function-node-params n))
- (body (js2-function-node-body n))
- (expr (eq (js2-function-node-form n) 'FUNCTION_EXPRESSION)))
- (unless getter
- (insert pad "function"))
- (when name
- (insert " ")
- (js2-print-ast name 0))
- (insert "(")
- (loop with len = (length params)
- for param in params
- for count from 1
- do
- (js2-print-ast param 0)
- (if (< count len)
- (insert ", ")))
- (insert ") {")
- (unless expr
- (insert "\n"))
- ;; TODO: fix this to be smarter about indenting, etc.
- (js2-print-body body (1+ i))
- (insert pad "}")
- (unless expr
- (insert "\n"))))
-
-(defsubst js2-function-name (node)
- "Return function name for NODE, a `js2-function-node', or nil if anonymous."
- (and (js2-function-node-name node)
- (js2-name-node-name (js2-function-node-name node))))
-
-;; Having this be an expression node makes it more flexible.
-;; There are IDE contexts, such as indentation in a for-loop initializer,
-;; that work better if you assume it's an expression. Whenever we have
-;; a standalone var/const declaration, we just wrap with an expr stmt.
-;; Eclipse apparently screwed this up and now has two versions, expr and stmt.
-(defstruct (js2-var-decl-node
- (:include js2-node)
- (:constructor nil)
- (:constructor make-js2-var-decl-node (&key (type js2-VAR)
- (pos js2-token-beg)
- len
- kids
- decl-type)))
- "AST node for a variable declaration list (VAR, CONST or LET).
-The node bounds differ depending on the declaration type. For VAR or
-CONST declarations, the bounds include the var/const keyword. For LET
-declarations, the node begins at the position of the first child."
- kids ; a lisp list of `js2-var-init-node' structs.
- decl-type) ; js2-VAR, js2-CONST or js2-LET
-
-(put 'cl-struct-js2-var-decl-node 'js2-visitor 'js2-visit-var-decl)
-(put 'cl-struct-js2-var-decl-node 'js2-printer 'js2-print-var-decl)
-
-(defun js2-visit-var-decl (n v)
- (dolist (kid (js2-var-decl-node-kids n))
- (js2-visit-ast kid v)))
-
-(defun js2-print-var-decl (n i)
- (let ((pad (js2-make-pad i))
- (tt (js2-var-decl-node-decl-type n)))
- (insert pad)
- (insert (cond
- ((= tt js2-VAR) "var ")
- ((= tt js2-LET) "") ; handled by parent let-{expr/stmt}
- ((= tt js2-CONST) "const ")
- (t
- (error "malformed var-decl node"))))
- (loop with kids = (js2-var-decl-node-kids n)
- with len = (length kids)
- for kid in kids
- for count from 1
- do
- (js2-print-ast kid 0)
- (if (< count len)
- (insert ", ")))))
-
-(defstruct (js2-var-init-node
- (:include js2-node)
- (:constructor nil)
- (:constructor make-js2-var-init-node (&key (type js2-VAR)
- (pos js2-ts-cursor)
- len
- target
- initializer)))
- "AST node for a variable declaration.
-The type field will be js2-CONST for a const decl."
- target ; `js2-name-node', `js2-object-node', or `js2-array-node'
- initializer) ; initializer expression, a `js2-node'
-
-(put 'cl-struct-js2-var-init-node 'js2-visitor 'js2-visit-var-init-node)
-(put 'cl-struct-js2-var-init-node 'js2-printer 'js2-print-var-init-node)
-
-(defun js2-visit-var-init-node (n v)
- (js2-visit-ast (js2-var-init-node-target n) v)
- (if (js2-var-init-node-initializer n)
- (js2-visit-ast (js2-var-init-node-initializer n) v)))
-
-(defun js2-print-var-init-node (n i)
- (let ((pad (js2-make-pad i))
- (name (js2-var-init-node-target n))
- (init (js2-var-init-node-initializer n)))
- (insert pad)
- (js2-print-ast name 0)
- (when init
- (insert " = ")
- (js2-print-ast init 0))))
-
-(defstruct (js2-cond-node
- (:include js2-node)
- (:constructor nil)
- (:constructor make-js2-cond-node (&key (type js2-HOOK)
- (pos js2-ts-cursor)
- len
- test-expr
- true-expr
- false-expr
- q-pos
- c-pos)))
- "AST node for the ternary operator"
- test-expr
- true-expr
- false-expr
- q-pos ; buffer position of ?
- c-pos) ; buffer position of :
-
-(put 'cl-struct-js2-cond-node 'js2-visitor 'js2-visit-cond-node)
-(put 'cl-struct-js2-cond-node 'js2-printer 'js2-print-cond-node)
-
-(defun js2-visit-cond-node (n v)
- (js2-visit-ast (js2-cond-node-test-expr n) v)
- (js2-visit-ast (js2-cond-node-true-expr n) v)
- (js2-visit-ast (js2-cond-node-false-expr n) v))
-
-(defun js2-print-cond-node (n i)
- (let ((pad (js2-make-pad i)))
- (insert pad)
- (js2-print-ast (js2-cond-node-test-expr n) 0)
- (insert " ? ")
- (js2-print-ast (js2-cond-node-true-expr n) 0)
- (insert " : ")
- (js2-print-ast (js2-cond-node-false-expr n) 0)))
-
-(defstruct (js2-infix-node
- (:include js2-node)
- (:constructor nil)
- (:constructor make-js2-infix-node (&key type
- (pos js2-ts-cursor)
- len
- op-pos
- left
- right)))
- "Represents infix expressions.
-Includes assignment ops like `|=', and the comma operator.
-The type field inherited from `js2-node' holds the operator."
- op-pos ; buffer position where operator begins
- left ; any `js2-node'
- right) ; any `js2-node'
-
-(put 'cl-struct-js2-infix-node 'js2-visitor 'js2-visit-infix-node)
-(put 'cl-struct-js2-infix-node 'js2-printer 'js2-print-infix-node)
-
-(defun js2-visit-infix-node (n v)
- (when (js2-infix-node-left n)
- (js2-visit-ast (js2-infix-node-left n) v))
- (when (js2-infix-node-right n)
- (js2-visit-ast (js2-infix-node-right n) v)))
-
-(defconst js2-operator-tokens
- (let ((table (make-hash-table :test 'eq))
- (tokens
- (list (cons js2-IN "in")
- (cons js2-TYPEOF "typeof")
- (cons js2-INSTANCEOF "instanceof")
- (cons js2-DELPROP "delete")
- (cons js2-COMMA ",")
- (cons js2-COLON ":")
- (cons js2-OR "||")
- (cons js2-AND "&&")
- (cons js2-INC "++")
- (cons js2-DEC "--")
- (cons js2-BITOR "|")
- (cons js2-BITXOR "^")
- (cons js2-BITAND "&")
- (cons js2-EQ "==")
- (cons js2-NE "!=")
- (cons js2-LT "<")
- (cons js2-LE "<=")
- (cons js2-GT ">")
- (cons js2-GE ">=")
- (cons js2-LSH "<<")
- (cons js2-RSH ">>")
- (cons js2-URSH ">>>")
- (cons js2-ADD "+") ; infix plus
- (cons js2-SUB "-") ; infix minus
- (cons js2-MUL "*")
- (cons js2-DIV "/")
- (cons js2-MOD "%")
- (cons js2-NOT "!")
- (cons js2-BITNOT "~")
- (cons js2-POS "+") ; unary plus
- (cons js2-NEG "-") ; unary minus
- (cons js2-SHEQ "===") ; shallow equality
- (cons js2-SHNE "!==") ; shallow inequality
- (cons js2-ASSIGN "=")
- (cons js2-ASSIGN_BITOR "|=")
- (cons js2-ASSIGN_BITXOR "^=")
- (cons js2-ASSIGN_BITAND "&=")
- (cons js2-ASSIGN_LSH "<<=")
- (cons js2-ASSIGN_RSH ">>=")
- (cons js2-ASSIGN_URSH ">>>=")
- (cons js2-ASSIGN_ADD "+=")
- (cons js2-ASSIGN_SUB "-=")
- (cons js2-ASSIGN_MUL "*=")
- (cons js2-ASSIGN_DIV "/=")
- (cons js2-ASSIGN_MOD "%="))))
- (loop for (k . v) in tokens do
- (puthash k v table))
- table))
-
-(defun js2-print-infix-node (n i)
- (let* ((tt (js2-node-type n))
- (op (gethash tt js2-operator-tokens)))
- (unless op
- (error "unrecognized infix operator %s" (js2-node-type n)))
- (insert (js2-make-pad i))
- (js2-print-ast (js2-infix-node-left n) 0)
- (unless (= tt js2-COMMA)
- (insert " "))
- (insert op)
- (insert " ")
- (js2-print-ast (js2-infix-node-right n) 0)))
-
-(defstruct (js2-assign-node
- (:include js2-infix-node)
- (:constructor nil)
- (:constructor make-js2-assign-node (&key type
- (pos js2-ts-cursor)
- len
- op-pos
- left
- right)))
- "Represents any assignment.
-The type field holds the actual assignment operator.")
-
-(put 'cl-struct-js2-assign-node 'js2-visitor 'js2-visit-infix-node)
-(put 'cl-struct-js2-assign-node 'js2-printer 'js2-print-infix-node)
-
-(defstruct (js2-unary-node
- (:include js2-node)
- (:constructor nil)
- (:constructor make-js2-unary-node (&key type ; required
- (pos js2-ts-cursor)
- len
- operand)))
- "AST node type for unary operator nodes.
-The type field can be NOT, BITNOT, POS, NEG, INC, DEC,
-TYPEOF, or DELPROP. For INC or DEC, a 'postfix node
-property is added if the operator follows the operand."
- operand) ; a `js2-node' expression
-
-(put 'cl-struct-js2-unary-node 'js2-visitor 'js2-visit-unary-node)
-(put 'cl-struct-js2-unary-node 'js2-printer 'js2-print-unary-node)
-
-(defun js2-visit-unary-node (n v)
- (js2-visit-ast (js2-unary-node-operand n) v))
-
-(defun js2-print-unary-node (n i)
- (let* ((tt (js2-node-type n))
- (op (gethash tt js2-operator-tokens))
- (postfix (js2-node-get-prop n 'postfix)))
- (unless op
- (error "unrecognized unary operator %s" tt))
- (insert (js2-make-pad i))
- (unless postfix
- (insert op))
- (if (or (= tt js2-TYPEOF)
- (= tt js2-DELPROP))
- (insert " "))
- (js2-print-ast (js2-unary-node-operand n) 0)
- (when postfix
- (insert op))))
-
-(defstruct (js2-let-node
- (:include js2-scope)
- (:constructor nil)
- (:constructor make-js2-let-node (&key (type js2-LETEXPR)
- (pos js2-token-beg)
- len
- vars
- body
- lp
- rp)))
- "AST node for a let expression or a let statement.
-Note that a let declaration such as let x=6, y=7 is a `js2-var-decl-node'."
- vars ; a `js2-var-decl-node'
- body ; a `js2-node' representing the expression or body block
- lp
- rp)
-
-(put 'cl-struct-js2-let-node 'js2-visitor 'js2-visit-let-node)
-(put 'cl-struct-js2-let-node 'js2-printer 'js2-print-let-node)
-
-(defun js2-visit-let-node (n v)
- (when (js2-let-node-vars n)
- (js2-visit-ast (js2-let-node-vars n) v))
- (when (js2-let-node-body n)
- (js2-visit-ast (js2-let-node-body n) v)))
-
-(defun js2-print-let-node (n i)
- (insert (js2-make-pad i) "let (")
- (js2-print-ast (js2-let-node-vars n) 0)
- (insert ") ")
- (js2-print-ast (js2-let-node-body n) i))
-
-(defstruct (js2-keyword-node
- (:include js2-node)
- (:constructor nil)
- (:constructor make-js2-keyword-node (&key type
- (pos js2-token-beg)
- (len (- js2-ts-cursor
pos)))))
- "AST node representing a literal keyword such as `null'.
-Used for `null', `this', `true', `false' and `debugger'.
-The node type is set to js2-NULL, js2-THIS, etc.")
-
-(put 'cl-struct-js2-keyword-node 'js2-visitor 'js2-visit-none)
-(put 'cl-struct-js2-keyword-node 'js2-printer 'js2-print-keyword-node)
-
-(defun js2-print-keyword-node (n i)
- (insert (js2-make-pad i)
- (let ((tt (js2-node-type n)))
- (cond
- ((= tt 'js2-THIS) "this")
- ((= tt 'js2-NULL) "null")
- ((= tt 'js2-TRUE) "true")
- ((= tt 'js2-FALSE) "false")
- ((= tt 'js2-DEBUGGER) "debugger")
- (t (error "Invalid keyword literal type: %d" tt))))))
-
-(defsubst js2-this-node-p (node)
- "Return t if this node is a `js2-literal-node' of type js2-THIS."
- (eq (js2-node-type node) js2-THIS))
-
-(defstruct (js2-new-node
- (:include js2-node)
- (:constructor nil)
- (:constructor make-js2-new-node (&key (type js2-NEW)
- (pos js2-token-beg)
- len
- target
- args
- initializer
- lp
- rp)))
- "AST node for new-expression such as new Foo()."
- target ; an identifier or reference
- args ; a lisp list of argument nodes
- lp ; position of left-paren, nil if omitted
- rp ; position of right-paren, nil if omitted
- initializer) ; experimental Rhino syntax: optional `js2-object-node'
-
-(put 'cl-struct-js2-new-node 'js2-visitor 'js2-visit-new-node)
-(put 'cl-struct-js2-new-node 'js2-printer 'js2-print-new-node)
-
-(defun js2-visit-new-node (n v)
- (js2-visit-ast (js2-new-node-target n) v)
- (dolist (arg (js2-new-node-args n))
- (js2-visit-ast arg v))
- (when (js2-new-node-initializer n)
- (js2-visit-ast (js2-new-node-initializer n) v)))
-
-(defun js2-print-new-node (n i)
- (insert (js2-make-pad i) "new ")
- (js2-print-ast (js2-new-node-target n))
- (insert "(")
- (js2-print-list (js2-new-node-args n))
- (insert ")")
- (when (js2-new-node-initializer n)
- (insert " ")
- (js2-print-ast (js2-new-node-initializer n))))
-
-(defstruct (js2-name-node
- (:include js2-node)
- (:constructor nil)
- (:constructor make-js2-name-node (&key (type js2-NAME)
- (pos js2-token-beg)
- (len (- js2-ts-cursor
- js2-token-beg))
- (name js2-ts-string))))
- "AST node for a JavaScript identifier"
- name ; a string
- scope) ; a `js2-scope' (optional, used for codegen)
-
-(put 'cl-struct-js2-name-node 'js2-visitor 'js2-visit-none)
-(put 'cl-struct-js2-name-node 'js2-printer 'js2-print-name-node)
-
-(defun js2-print-name-node (n i)
- (insert (js2-make-pad i)
- (js2-name-node-name n)))
-
-(defsubst js2-name-node-length (node)
- "Return identifier length of NODE, a `js2-name-node'.
-Returns 0 if NODE is nil or its identifier field is nil."
- (if node
- (length (js2-name-node-name node))
- 0))
-
-(defstruct (js2-number-node
- (:include js2-node)
- (:constructor nil)
- (:constructor make-js2-number-node (&key (type js2-NUMBER)
- (pos js2-token-beg)
- (len (- js2-ts-cursor
- js2-token-beg))
- (value js2-ts-string)
- (num-value
js2-ts-number))))
- "AST node for a number literal."
- value ; the original string, e.g. "6.02e23"
- num-value) ; the parsed number value
-
-(put 'cl-struct-js2-number-node 'js2-visitor 'js2-visit-none)
-(put 'cl-struct-js2-number-node 'js2-printer 'js2-print-number-node)
-
-(defun js2-print-number-node (n i)
- (insert (js2-make-pad i)
- (number-to-string (js2-number-node-value n))))
-
-(defstruct (js2-regexp-node
- (:include js2-node)
- (:constructor nil)
- (:constructor make-js2-regexp-node (&key (type js2-REGEXP)
- (pos js2-token-beg)
- (len (- js2-ts-cursor
- js2-token-beg))
- value
- flags)))
- "AST node for a regular expression literal."
- value ; the regexp string, without // delimiters
- flags) ; a string of flags, e.g. `mi'.
-
-(put 'cl-struct-js2-regexp-node 'js2-visitor 'js2-visit-none)
-(put 'cl-struct-js2-regexp-node 'js2-printer 'js2-print-regexp)
-
-(defun js2-print-regexp (n i)
- (insert (js2-make-pad i)
- "/"
- (js2-regexp-node-value n)
- "/")
- (if (js2-regexp-node-flags n)
- (insert (js2-regexp-node-flags n))))
-
-(defstruct (js2-string-node
- (:include js2-node)
- (:constructor nil)
- (:constructor make-js2-string-node (&key (type js2-STRING)
- (pos js2-token-beg)
- (len (- js2-ts-cursor
- js2-token-beg))
- (value js2-ts-string))))
- "String literal.
-Escape characters are not evaluated; e.g. \n is 2 chars in value field.
-You can tell the quote type by looking at the first character."
- value) ; the characters of the string, including the quotes
-
-(put 'cl-struct-js2-string-node 'js2-visitor 'js2-visit-none)
-(put 'cl-struct-js2-string-node 'js2-printer 'js2-print-string-node)
-
-(defun js2-print-string-node (n i)
- (insert (js2-make-pad i)
- (js2-node-string n)))
-
-(defstruct (js2-array-node
- (:include js2-node)
- (:constructor nil)
- (:constructor make-js2-array-node (&key (type js2-ARRAYLIT)
- (pos js2-ts-cursor)
- len
- elems)))
- "AST node for an array literal."
- elems) ; list of expressions. [foo,,bar] yields a nil middle element.
-
-(put 'cl-struct-js2-array-node 'js2-visitor 'js2-visit-array-node)
-(put 'cl-struct-js2-array-node 'js2-printer 'js2-print-array-node)
-
-(defun js2-visit-array-node (n v)
- (dolist (e (js2-array-node-elems n))
- (when e ; can be nil, e.g. [a, ,b]
- (js2-visit-ast e v))))
-
-(defun js2-print-array-node (n i)
- (insert (js2-make-pad i) "[")
- (js2-print-list (js2-array-node-elems n))
- (insert "]"))
-
-(defstruct (js2-object-node
- (:include js2-node)
- (:constructor nil)
- (:constructor make-js2-object-node (&key (type js2-OBJECTLIT)
- (pos js2-ts-cursor)
- len
- elems)))
- "AST node for an object literal expression."
- elems) ; a lisp list of `js2-object-prop-node'
-
-(put 'cl-struct-js2-object-node 'js2-visitor 'js2-visit-object-node)
-(put 'cl-struct-js2-object-node 'js2-printer 'js2-print-object-node)
-
-(defun js2-visit-object-node (n v)
- (dolist (e (js2-object-node-elems n))
- (js2-visit-ast e v)))
-
-(defun js2-print-object-node (n i)
- (insert (js2-make-pad i) "{")
- (js2-print-list (js2-object-node-elems n))
- (insert "}"))
-
-(defstruct (js2-object-prop-node
- (:include js2-infix-node)
- (:constructor nil)
- (:constructor make-js2-object-prop-node (&key (type js2-COLON)
- (pos js2-ts-cursor)
- len
- left
- right
- op-pos)))
- "AST node for an object literal prop:value entry.
-The `left' field is the property: a name node, string node or number node.
-The `right' field is a `js2-node' representing the initializer value.")
-
-(put 'cl-struct-js2-object-prop-node 'js2-visitor 'js2-visit-infix-node)
-(put 'cl-struct-js2-object-prop-node 'js2-printer 'js2-print-object-prop-node)
-
-(defun js2-print-object-prop-node (n i)
- (insert (js2-make-pad i))
- (js2-print-ast (js2-object-prop-node-left n) 0)
- (insert ":")
- (js2-print-ast (js2-object-prop-node-right n) 0))
-
-(defstruct (js2-getter-setter-node
- (:include js2-infix-node)
- (:constructor nil)
- (:constructor make-js2-getter-setter-node (&key type ; GET or SET
- (pos js2-ts-cursor)
- len
- left
- right)))
- "AST node for a getter/setter property in an object literal.
-The `left' field is the `js2-name-node' naming the getter/setter prop.
-The `right' field is always an anonymous `js2-function-node' with a node
-property `GETTER_SETTER' set to js2-GET or js2-SET. ")
-
-(put 'cl-struct-js2-getter-setter-node 'js2-visitor 'js2-visit-infix-node)
-(put 'cl-struct-js2-getter-setter-node 'js2-printer 'js2-print-getter-setter)
-
-(defun js2-print-getter-setter (n i)
- (let ((pad (js2-make-pad i))
- (left (js2-getter-setter-node-left n))
- (right (js2-getter-setter-node-right n)))
- (insert pad)
- (insert (if (= (js2-node-type n) js2-GET) "get " "set "))
- (js2-print-ast left 0)
- (js2-print-ast right 0)))
-
-(defstruct (js2-prop-get-node
- (:include js2-infix-node)
- (:constructor nil)
- (:constructor make-js2-prop-get-node (&key (type js2-GETPROP)
- (pos js2-ts-cursor)
- len
- left
- right)))
- "AST node for a dotted property reference, e.g. foo.bar or foo().bar")
-
-(put 'cl-struct-js2-prop-get-node 'js2-visitor 'js2-visit-prop-get-node)
-(put 'cl-struct-js2-prop-get-node 'js2-printer 'js2-print-prop-get-node)
-
-(defun js2-visit-prop-get-node (n v)
- (when (js2-prop-get-node-left n)
- (js2-visit-ast (js2-prop-get-node-left n) v))
- (when (js2-prop-get-node-right n)
- (js2-visit-ast (js2-prop-get-node-right n) v)))
-
-(defun js2-print-prop-get-node (n i)
- (insert (js2-make-pad i))
- (js2-print-ast (js2-prop-get-node-left n) 0)
- (insert ".")
- (js2-print-ast (js2-prop-get-node-right n) 0))
-
-(defstruct (js2-elem-get-node
- (:include js2-node)
- (:constructor nil)
- (:constructor make-js2-elem-get-node (&key (type js2-GETELEM)
- (pos js2-ts-cursor)
- len
- target
- element
- lb
- rb)))
- "AST node for an array index expression such as foo[bar]."
- target ; a `js2-node' - the expression preceding the "."
- element ; a `js2-node' - the expression in brackets
- lb ; position of left-bracket, nil if omitted
- rb) ; position of right-bracket, nil if omitted
-
-(put 'cl-struct-js2-elem-get-node 'js2-visitor 'js2-visit-elem-get-node)
-(put 'cl-struct-js2-elem-get-node 'js2-printer 'js2-print-elem-get-node)
-
-(defun js2-visit-elem-get-node (n v)
- (when (js2-elem-get-node-target n)
- (js2-visit-ast (js2-elem-get-node-target n) v))
- (when (js2-elem-get-node-element n)
- (js2-visit-ast (js2-elem-get-node-element n) v)))
-
-(defun js2-print-elem-get-node (n i)
- (insert (js2-make-pad i))
- (js2-print-ast (js2-elem-get-node-target n) 0)
- (insert "[")
- (js2-print-ast (js2-elem-get-node-element n) 0)
- (insert "]"))
-
-(defstruct (js2-call-node
- (:include js2-node)
- (:constructor nil)
- (:constructor make-js2-call-node (&key (type js2-CALL)
- (pos js2-ts-cursor)
- len
- target
- args
- lp
- rp)))
- "AST node for a JavaScript function call."
- target ; a `js2-node' evaluating to the function to call
- args ; a lisp list of `js2-node' arguments
- lp ; position of open-paren, or nil if missing
- rp) ; position of close-paren, or nil if missing
-
-(put 'cl-struct-js2-call-node 'js2-visitor 'js2-visit-call-node)
-(put 'cl-struct-js2-call-node 'js2-printer 'js2-print-call-node)
-
-(defun js2-visit-call-node (n v)
- (js2-visit-ast (js2-call-node-target n) v)
- (dolist (arg (js2-call-node-args n))
- (js2-visit-ast arg v)))
-
-(defun js2-print-call-node (n i)
- (insert (js2-make-pad i))
- (js2-print-ast (js2-call-node-target n) 0)
- (insert "(")
- (js2-print-list (js2-call-node-args n))
- (insert ")"))
-
-(defstruct (js2-yield-node
- (:include js2-node)
- (:constructor nil)
- (:constructor make-js2-yield-node (&key (type js2-YIELD)
- (pos js2-ts-cursor)
- len
- value)))
- "AST node for yield statement or expression."
- value) ; optional: value to be yielded
-
-(put 'cl-struct-js2-yield-node 'js2-visitor 'js2-visit-yield-node)
-(put 'cl-struct-js2-yield-node 'js2-printer 'js2-print-yield-node)
-
-(defun js2-visit-yield-node (n v)
- (js2-visit-ast (js2-yield-node-value n) v))
-
-(defun js2-print-yield-node (n i)
- (insert (js2-make-pad i))
- (insert "yield")
- (when (js2-yield-node-value n)
- (insert " ")
- (js2-print-ast (js2-yield-node-value n) 0)))
-
-(defstruct (js2-paren-node
- (:include js2-node)
- (:constructor nil)
- (:constructor make-js2-paren-node (&key (type js2-LP)
- (pos js2-ts-cursor)
- len
- expr)))
- "AST node for a parenthesized expression.
-In particular, used when the parens are syntactically optional,
-as opposed to required parens such as those enclosing an if-conditional."
- expr) ; `js2-node'
-
-(put 'cl-struct-js2-paren-node 'js2-visitor 'js2-visit-paren-node)
-(put 'cl-struct-js2-paren-node 'js2-printer 'js2-print-paren-node)
-
-(defun js2-visit-paren-node (n v)
- (js2-visit-ast (js2-paren-node-expr n) v))
-
-(defun js2-print-paren-node (n i)
- (insert (js2-make-pad i))
- (insert "(")
- (js2-print-ast (js2-paren-node-expr n) 0)
- (insert ")"))
-
-(defstruct (js2-array-comp-node
- (:include js2-scope)
- (:constructor nil)
- (:constructor make-js2-array-comp-node (&key (type js2-ARRAYCOMP)
- (pos js2-ts-cursor)
- len
- result
- loops
- filter
- if-pos
- lp
- rp)))
- "AST node for an Array comprehension such as [[x,y] for (x in foo) for (y in
bar)]."
- result ; result expression (just after left-bracket)
- loops ; a lisp list of `js2-array-comp-loop-node'
- filter ; guard/filter expression
- if-pos ; buffer pos of 'if' keyword, if present, else nil
- lp ; buffer position of if-guard left-paren, or nil if not present
- rp) ; buffer position of if-guard right-paren, or nil if not present
-
-(put 'cl-struct-js2-array-comp-node 'js2-visitor 'js2-visit-array-comp-node)
-(put 'cl-struct-js2-array-comp-node 'js2-printer 'js2-print-array-comp-node)
-
-(defun js2-visit-array-comp-node (n v)
- (js2-visit-ast (js2-array-comp-node-result n) v)
- (dolist (l (js2-array-comp-node-loops n))
- (js2-visit-ast l v))
- (if (js2-array-comp-node-filter n)
- (js2-visit-ast (js2-array-comp-node-filter n) v)))
-
-(defun js2-print-array-comp-node (n i)
- (let ((pad (js2-make-pad i))
- (result (js2-array-comp-node-result n))
- (loops (js2-array-comp-node-loops n))
- (filter (js2-array-comp-node-filter n)))
- (insert pad "[")
- (js2-print-ast result 0)
- (dolist (l loops)
- (insert " ")
- (js2-print-ast l 0))
- (when filter
- (insert " if (")
- (js2-print-ast filter 0))
- (insert ")]")))
-
-(defstruct (js2-array-comp-loop-node
- (:include js2-for-in-node)
- (:constructor nil)
- (:constructor make-js2-array-comp-loop-node (&key (type js2-FOR)
- (pos
js2-ts-cursor)
- len
- iterator
- object
- in-pos
- foreach-p
- each-pos
- lp
- rp)))
- "AST subtree for each 'for (foo in bar)' loop in an array comprehension.")
-
-(put 'cl-struct-js2-array-comp-loop-node 'js2-visitor
'js2-visit-array-comp-loop)
-(put 'cl-struct-js2-array-comp-loop-node 'js2-printer
'js2-print-array-comp-loop)
-
-(defun js2-visit-array-comp-loop (n v)
- (js2-visit-ast (js2-array-comp-loop-node-iterator n) v)
- (js2-visit-ast (js2-array-comp-loop-node-object n) v))
-
-(defun js2-print-array-comp-loop (n i)
- (insert "for (")
- (js2-print-ast (js2-array-comp-loop-node-iterator n) 0)
- (insert " in ")
- (js2-print-ast (js2-array-comp-loop-node-object n) 0)
- (insert ")"))
-
-(defstruct (js2-empty-expr-node
- (:include js2-node)
- (:constructor nil)
- (:constructor make-js2-empty-expr-node (&key (type js2-EMPTY)
- (pos js2-token-beg)
- len)))
- "AST node for an empty expression.")
-
-(put 'cl-struct-js2-empty-expr-node 'js2-visitor 'js2-visit-none)
-(put 'cl-struct-js2-empty-expr-node 'js2-printer 'js2-print-none)
-
-(defstruct (js2-xml-node
- (:include js2-block-node)
- (:constructor nil)
- (:constructor make-js2-xml-node (&key (type js2-XML)
- (pos js2-token-beg)
- len
- kids)))
- "AST node for initial parse of E4X literals.
-The kids field is a list of XML fragments, each a `js2-string-node' or
-a `js2-xml-js-expr-node'. Equivalent to Rhino's XmlLiteral node.")
-
-(put 'cl-struct-js2-xml-node 'js2-visitor 'js2-visit-block)
-(put 'cl-struct-js2-xml-node 'js2-printer 'js2-print-xml-node)
-
-(defun js2-print-xml-node (n i)
- (dolist (kid (js2-xml-node-kids n))
- (js2-print-ast kid i)))
-
-(defstruct (js2-xml-js-expr-node
- (:include js2-xml-node)
- (:constructor nil)
- (:constructor make-js2-xml-js-expr-node (&key (type js2-XML)
- (pos js2-ts-cursor)
- len
- expr)))
- "AST node for an embedded JavaScript {expression} in an E4X literal.
-The start and end fields correspond to the curly-braces."
- expr) ; a `js2-expr-node' of some sort
-
-(put 'cl-struct-js2-xml-js-expr-node 'js2-visitor 'js2-visit-xml-js-expr)
-(put 'cl-struct-js2-xml-js-expr-node 'js2-printer 'js2-print-xml-js-expr)
-
-(defun js2-visit-xml-js-expr (n v)
- (js2-visit-ast (js2-xml-js-expr-node-expr n) v))
-
-(defun js2-print-xml-js-expr (n i)
- (insert (js2-make-pad i))
- (insert "{")
- (js2-print-ast (js2-xml-js-expr-node-expr n) 0)
- (insert "}"))
-
-(defstruct (js2-xml-dot-query-node
- (:include js2-infix-node)
- (:constructor nil)
- (:constructor make-js2-xml-dot-query-node (&key (type js2-DOTQUERY)
- (pos js2-ts-cursor)
- op-pos
- len
- left
- right
- rp)))
- "AST node for an E4X foo.(bar) filter expression.
-Note that the left-paren is automatically the character immediately
-following the dot (.) in the operator. No whitespace is permitted
-between the dot and the lp by the scanner."
- rp)
-
-(put 'cl-struct-js2-xml-dot-query-node 'js2-visitor 'js2-visit-infix-node)
-(put 'cl-struct-js2-xml-dot-query-node 'js2-printer 'js2-print-xml-dot-query)
-
-(defun js2-print-xml-dot-query (n i)
- (insert (js2-make-pad i))
- (js2-print-ast (js2-xml-dot-query-node-left n) 0)
- (insert ".(")
- (js2-print-ast (js2-xml-dot-query-node-right n) 0)
- (insert ")"))
-
-(defstruct (js2-xml-ref-node
- (:include js2-node)
- (:constructor nil)) ; abstract
- "Base type for E4X XML attribute-access or property-get expressions.
-Such expressions can take a variety of forms. The general syntax has
-three parts:
-
- - (optional) an @ (specifying an attribute access)
- - (optional) a namespace (a `js2-name-node') and double-colon
- - (required) either a `js2-name-node' or a bracketed [expression]
-
-The property-name expressions (examples: ns::name, @name) are
-represented as `js2-xml-prop-ref' nodes. The bracketed-expression
-versions (examples: ns::[name], @[name]) become `js2-xml-elem-ref' nodes.
-
-This node type (or more specifically, its subclasses) will sometimes
-be the right-hand child of a `js2-prop-get-node' or a
-`js2-infix-node' of type `js2-DOTDOT', the .. xml-descendants operator.
-The `js2-xml-ref-node' may also be a standalone primary expression with
-no explicit target, which is valid in certain expression contexts such as
-
- company..employee.(@id < 100)
-
-in this case, the @id is a `js2-xml-ref' that is part of an infix '<'
-expression whose parent is a `js2-xml-dot-query-node'."
- namespace
- at-pos
- colon-pos)
-
-(defsubst js2-xml-ref-node-attr-access-p (node)
- "Return non-nil if this expression began with an @-token."
- (and (numberp (js2-xml-ref-node-at-pos node))
- (plusp (js2-xml-ref-node-at-pos node))))
-
-(defstruct (js2-xml-prop-ref-node
- (:include js2-xml-ref-node)
- (:constructor nil)
- (:constructor make-js2-xml-prop-ref-node (&key (type js2-REF_NAME)
- (pos js2-token-beg)
- len
- propname
- namespace
- at-pos
- colon-pos)))
- "AST node for an E4X XML [expr] property-ref expression.
-The JavaScript syntax is an optional @, an optional ns::, and a name.
-
- [ '@' ] [ name '::' ] name
-
-Examples include name, ns::name, ns::*, *::name, *::*, @attr, @ns::attr,
address@hidden::*, @*::attr, @*::*, and @*.
-
-The node starts at the @ token, if present. Otherwise it starts at the
-namespace name. The node bounds extend through the closing right-bracket,
-or if it is missing due to a syntax error, through the end of the index
-expression."
- propname)
-
-(put 'cl-struct-js2-xml-prop-ref-node 'js2-visitor
'js2-visit-xml-prop-ref-node)
-(put 'cl-struct-js2-xml-prop-ref-node 'js2-printer
'js2-print-xml-prop-ref-node)
-
-(defun js2-visit-xml-prop-ref-node (n v)
- (if (js2-xml-prop-ref-node-namespace n)
- (js2-visit-ast (js2-xml-prop-ref-node-namespace n) v))
- (if (js2-xml-prop-ref-node-propname n)
- (js2-visit-ast (js2-xml-prop-ref-node-propname n) v)))
-
-(defun js2-print-xml-prop-ref-node (n i)
- (insert (js2-make-pad i))
- (if (js2-xml-ref-node-attr-access-p n)
- (insert "@"))
- (when (js2-xml-prop-ref-node-namespace n)
- (js2-print-ast (js2-xml-prop-ref-node-namespace n) 0)
- (insert "::"))
- (if (js2-xml-prop-ref-node-propname n)
- (js2-print-ast (js2-xml-prop-ref-node-propname n) 0)))
-
-(defstruct (js2-xml-elem-ref-node
- (:include js2-xml-ref-node)
- (:constructor nil)
- (:constructor make-js2-xml-elem-ref-node (&key (type
js2-REF_MEMBER)
- (pos js2-token-beg)
- len
- expr
- lb
- rb
- namespace
- at-pos
- colon-pos)))
- "AST node for an E4X XML [expr] member-ref expression.
-Syntax:
-
- [ '@' ] [ name '::' ] '[' expr ']'
-
-Examples include ns::[expr], @ns::[expr], @[expr], *::[expr] and @*::[expr].
-
-Note that the form [expr] (i.e. no namespace or attribute-qualifier)
-is not a legal E4X XML element-ref expression, since it's already used
-for standard JavaScript element-get array indexing. Hence, a
-`js2-xml-elem-ref-node' always has either the attribute-qualifier, a
-non-nil namespace node, or both.
-
-The node starts at the @ token, if present. Otherwise it starts
-at the namespace name. The node bounds extend through the closing
-right-bracket, or if it is missing due to a syntax error, through the
-end of the index expression."
- expr ; the bracketed index expression
- lb
- rb)
-
-(put 'cl-struct-js2-xml-elem-ref-node 'js2-visitor
'js2-visit-xml-elem-ref-node)
-(put 'cl-struct-js2-xml-elem-ref-node 'js2-printer
'js2-print-xml-elem-ref-node)
-
-(defun js2-visit-xml-elem-ref-node (n v)
- (if (js2-xml-elem-ref-node-namespace n)
- (js2-visit-ast (js2-xml-elem-ref-node-namespace n) v))
- (if (js2-xml-elem-ref-node-expr n)
- (js2-visit-ast (js2-xml-elem-ref-node-expr n) v)))
-
-(defun js2-print-xml-elem-ref-node (n i)
- (insert (js2-make-pad i))
- (if (js2-xml-ref-node-attr-access-p n)
- (insert "@"))
- (when (js2-xml-elem-ref-node-namespace n)
- (js2-print-ast (js2-xml-elem-ref-node-namespace n) 0)
- (insert "::"))
- (insert "[")
- (if (js2-xml-elem-ref-node-expr n)
- (js2-print-ast (js2-xml-elem-ref-node-expr n) 0))
- (insert "]"))
-
-;;; Placeholder nodes for when we try parsing the XML literals structurally.
-
-(defstruct (js2-xml-start-tag-node
- (:include js2-xml-node)
- (:constructor nil)
- (:constructor make-js2-xml-start-tag-node (&key (type js2-XML)
- (pos js2-ts-cursor)
- len
- name
- attrs
- kids
- empty-p)))
- "AST node for an XML start-tag. Not currently used.
-The `kids' field is a lisp list of child content nodes."
- name ; a `js2-xml-name-node'
- attrs ; a lisp list of `js2-xml-attr-node'
- empty-p) ; t if this is an empty element such as <foo bar="baz"/>
-
-(put 'cl-struct-js2-xml-start-tag-node 'js2-visitor 'js2-visit-xml-start-tag)
-(put 'cl-struct-js2-xml-start-tag-node 'js2-printer 'js2-print-xml-start-tag)
-
-(defun js2-visit-xml-start-tag (n v)
- (js2-visit-ast (js2-xml-start-tag-node-name n) v)
- (dolist (attr (js2-xml-start-tag-node-attrs n))
- (js2-visit-ast attr v))
- (js2-visit-block n v))
-
-(defun js2-print-xml-start-tag (n i)
- (insert (js2-make-pad i) "<")
- (js2-print-ast (js2-xml-start-tag-node-name n) 0)
- (when (js2-xml-start-tag-node-attrs n)
- (insert " ")
- (js2-print-list (js2-xml-start-tag-node-attrs n) " "))
- (insert ">"))
-
-;; I -think- I'm going to make the parent node the corresponding start-tag,
-;; and add the end-tag to the kids list of the parent as well.
-(defstruct (js2-xml-end-tag-node
- (:include js2-xml-node)
- (:constructor nil)
- (:constructor make-js2-xml-end-tag-node (&key (type js2-XML)
- (pos js2-ts-cursor)
- len
- name)))
- "AST node for an XML end-tag. Not currently used."
- name) ; a `js2-xml-name-node'
-
-(put 'cl-struct-js2-xml-end-tag-node 'js2-visitor 'js2-visit-xml-end-tag)
-(put 'cl-struct-js2-xml-end-tag-node 'js2-printer 'js2-print-xml-end-tag)
-
-(defun js2-visit-xml-end-tag (n v)
- (js2-visit-ast (js2-xml-end-tag-node-name n) v))
-
-(defun js2-print-xml-end-tag (n i)
- (insert (js2-make-pad i))
- (insert "</")
- (js2-print-ast (js2-xml-end-tag-node-name n) 0)
- (insert ">"))
-
-(defstruct (js2-xml-name-node
- (:include js2-xml-node)
- (:constructor nil)
- (:constructor make-js2-xml-name-node (&key (type js2-XML)
- (pos js2-ts-cursor)
- len
- namespace
- kids)))
- "AST node for an E4X XML name. Not currently used.
-Any XML name can be qualified with a namespace, hence the namespace field.
-Further, any E4X name can be comprised of arbitrary JavaScript {} expressions.
-The kids field is a list of `js2-name-node' and `js2-xml-js-expr-node'.
-For a simple name, the kids list has exactly one node, a `js2-name-node'."
- namespace) ; a `js2-string-node'
-
-(put 'cl-struct-js2-xml-name-node 'js2-visitor 'js2-visit-xml-name-node)
-(put 'cl-struct-js2-xml-name-node 'js2-printer 'js2-print-xml-name-node)
-
-(defun js2-visit-xml-name-node (n v)
- (js2-visit-ast (js2-xml-name-node-namespace n) v))
-
-(defun js2-print-xml-name-node (n i)
- (insert (js2-make-pad i))
- (when (js2-xml-name-node-namespace n)
- (js2-print-ast (js2-xml-name-node-namespace n) 0)
- (insert "::"))
- (dolist (kid (js2-xml-name-node-kids n))
- (js2-print-ast kid 0)))
-
-(defstruct (js2-xml-pi-node
- (:include js2-xml-node)
- (:constructor nil)
- (:constructor make-js2-xml-pi-node (&key (type js2-XML)
- (pos js2-ts-cursor)
- len
- name
- attrs)))
- "AST node for an E4X XML processing instruction. Not currently used."
- name ; a `js2-xml-name-node'
- attrs) ; a list of `js2-xml-attr-node'
-
-(put 'cl-struct-js2-xml-pi-node 'js2-visitor 'js2-visit-xml-pi-node)
-(put 'cl-struct-js2-xml-pi-node 'js2-printer 'js2-print-xml-pi-node)
-
-(defun js2-visit-xml-pi-node (n v)
- (js2-visit-ast (js2-xml-pi-node-name n) v)
- (dolist (attr (js2-xml-pi-node-attrs n))
- (js2-visit-ast attr v)))
-
-(defun js2-print-xml-pi-node (n i)
- (insert (js2-make-pad i) "<?")
- (js2-print-ast (js2-xml-pi-node-name n))
- (when (js2-xml-pi-node-attrs n)
- (insert " ")
- (js2-print-list (js2-xml-pi-node-attrs n)))
- (insert "?>"))
-
-(defstruct (js2-xml-cdata-node
- (:include js2-xml-node)
- (:constructor nil)
- (:constructor make-js2-xml-cdata-node (&key (type js2-XML)
- (pos js2-ts-cursor)
- len
- content)))
- "AST node for a CDATA escape section. Not currently used."
- content) ; a `js2-string-node' with node-property 'quote-type 'cdata
-
-(put 'cl-struct-js2-xml-cdata-node 'js2-visitor 'js2-visit-xml-cdata-node)
-(put 'cl-struct-js2-xml-cdata-node 'js2-printer 'js2-print-xml-cdata-node)
-
-(defun js2-visit-xml-cdata-node (n v)
- (js2-visit-ast (js2-xml-cdata-node-content n) v))
-
-(defun js2-print-xml-cdata-node (n i)
- (insert (js2-make-pad i))
- (js2-print-ast (js2-xml-cdata-node-content n)))
-
-(defstruct (js2-xml-attr-node
- (:include js2-xml-node)
- (:constructor nil)
- (:constructor make-js2-attr-node (&key (type js2-XML)
- (pos js2-ts-cursor)
- len
- name
- value
- eq-pos
- quote-type)))
- "AST node representing a foo='bar' XML attribute value. Not yet used."
- name ; a `js2-xml-name-node'
- value ; a `js2-xml-name-node'
- eq-pos ; buffer position of "=" sign
- quote-type) ; 'single or 'double
-
-(put 'cl-struct-js2-xml-attr-node 'js2-visitor 'js2-visit-xml-attr-node)
-(put 'cl-struct-js2-xml-attr-node 'js2-printer 'js2-print-xml-attr-node)
-
-(defun js2-visit-xml-attr-node (n v)
- (js2-visit-ast (js2-xml-attr-node-name n) v)
- (js2-visit-ast (js2-xml-attr-node-value n) v))
-
-(defun js2-print-xml-attr-node (n i)
- (let ((quote (if (eq (js2-xml-attr-node-quote-type n) 'single)
- "'"
- "\"")))
- (insert (js2-make-pad i))
- (js2-print-ast (js2-xml-attr-node-name n) 0)
- (insert "=" quote)
- (js2-print-ast (js2-xml-attr-node-value n) 0)
- (insert quote)))
-
-(defstruct (js2-xml-text-node
- (:include js2-xml-node)
- (:constructor nil)
- (:constructor make-js2-text-node (&key (type js2-XML)
- (pos js2-ts-cursor)
- len
- content)))
- "AST node for an E4X XML text node. Not currently used."
- content) ; a lisp list of `js2-string-node' and `js2-xml-js-expr-node'
-
-(put 'cl-struct-js2-xml-text-node 'js2-visitor 'js2-visit-xml-text-node)
-(put 'cl-struct-js2-xml-text-node 'js2-printer 'js2-print-xml-text-node)
-
-(defun js2-visit-xml-text-node (n v)
- (js2-visit-ast (js2-xml-text-node-content n) v))
-
-(defun js2-print-xml-text-node (n i)
- (insert (js2-make-pad i))
- (dolist (kid (js2-xml-text-node-content n))
- (js2-print-ast kid)))
-
-(defstruct (js2-xml-comment-node
- (:include js2-xml-node)
- (:constructor nil)
- (:constructor make-js2-xml-comment-node (&key (type js2-XML)
- (pos js2-ts-cursor)
- len)))
- "AST node for E4X XML comment. Not currently used.")
-
-(put 'cl-struct-js2-xml-comment-node 'js2-visitor 'js2-visit-none)
-(put 'cl-struct-js2-xml-comment-node 'js2-printer 'js2-print-xml-comment)
-
-(defun js2-print-xml-comment (n i)
- (insert (js2-make-pad i)
- (js2-node-string n)))
-
-;;; Node utilities
-
-(defsubst js2-node-line (n)
- "Fetch the source line number at the start of node N.
-This is O(n) in the length of the source buffer; use prudently."
- (1+ (count-lines (point-min) (js2-node-abs-pos n))))
-
-(defsubst js2-block-node-kid (n i)
- "Return child I of node N, or nil if there aren't that many."
- (nth i (js2-block-node-kids n)))
-
-(defsubst js2-block-node-first (n)
- "Return first child of block node N, or nil if there is none."
- (first (js2-block-node-kids n)))
-
-(defun js2-node-root (n)
- "Return the root of the AST containing N.
-If N has no parent pointer, returns N."
- (let ((parent (js2-node-parent n)))
- (if parent
- (js2-node-root parent)
- n)))
-
-(defun js2-node-position-in-parent (node &optional parent)
- "Return the position of NODE in parent's block-kids list.
-PARENT can be supplied if known. Positioned returned is zero-indexed.
-Returns 0 if NODE is not a child of a block statement, or if NODE
-is not a statement node."
- (let ((p (or parent (js2-node-parent node)))
- (i 0))
- (if (not (js2-block-node-p p))
- i
- (or (js2-position node (js2-block-node-kids p))
- 0))))
-
-(defsubst js2-node-short-name (n)
- "Return the short name of node N as a string, e.g. `js2-if-node'."
- (substring (symbol-name (aref n 0))
- (length "cl-struct-")))
-
-(defsubst js2-node-child-list (node)
- "Return the child list for NODE, a lisp list of nodes.
-Works for block nodes, array nodes, obj literals, funarg lists,
-var decls and try nodes (for catch clauses). Note that you should call
-`js2-block-node-kids' on the function body for the body statements.
-Returns nil for zero-length child lists or unsupported nodes."
- (cond
- ((js2-function-node-p node)
- (js2-function-node-params node))
- ((js2-block-node-p node)
- (js2-block-node-kids node))
- ((js2-try-node-p node)
- (js2-try-node-catch-clauses node))
- ((js2-array-node-p node)
- (js2-array-node-elems node))
- ((js2-object-node-p node)
- (js2-object-node-elems node))
- ((js2-call-node-p node)
- (js2-call-node-args node))
- ((js2-new-node-p node)
- (js2-new-node-args node))
- ((js2-var-decl-node-p node)
- (js2-var-decl-node-kids node))
- (t
- nil)))
-
-(defsubst js2-node-set-child-list (node kids)
- "Set the child list for NODE to KIDS."
- (cond
- ((js2-function-node-p node)
- (setf (js2-function-node-params node) kids))
- ((js2-block-node-p node)
- (setf (js2-block-node-kids node) kids))
- ((js2-try-node-p node)
- (setf (js2-try-node-catch-clauses node) kids))
- ((js2-array-node-p node)
- (setf (js2-array-node-elems node) kids))
- ((js2-object-node-p node)
- (setf (js2-object-node-elems node) kids))
- ((js2-call-node-p node)
- (setf (js2-call-node-args node) kids))
- ((js2-new-node-p node)
- (setf (js2-new-node-args node) kids))
- ((js2-var-decl-node-p node)
- (setf (js2-var-decl-node-kids node) kids))
- (t
- (error "Unsupported node type: %s" (js2-node-short-name node))))
- kids)
-
-;; All because Common Lisp doesn't support multiple inheritance for defstructs.
-(defconst js2-paren-expr-nodes
- '(cl-struct-js2-array-comp-loop-node
- cl-struct-js2-array-comp-node
- cl-struct-js2-call-node
- cl-struct-js2-catch-node
- cl-struct-js2-do-node
- cl-struct-js2-elem-get-node
- cl-struct-js2-for-in-node
- cl-struct-js2-for-node
- cl-struct-js2-function-node
- cl-struct-js2-if-node
- cl-struct-js2-let-node
- cl-struct-js2-new-node
- cl-struct-js2-paren-node
- cl-struct-js2-switch-node
- cl-struct-js2-while-node
- cl-struct-js2-with-node
- cl-struct-js2-xml-dot-query-node)
- "Node types that can have a parenthesized child expression.
-In particular, nodes that respond to `js2-node-lp' and `js2-node-rp'.")
-
-(defsubst js2-paren-expr-node-p (node)
- "Return t for nodes that typically have a parenthesized child expression.
-Useful for computing the indentation anchors for arg-lists and conditions.
-Note that it may return a false positive, for instance when NODE is
-a `js2-new-node' and there are no arguments or parentheses."
- (memq (aref node 0) js2-paren-expr-nodes))
-
-;; Fake polymorphism... yech.
-(defsubst js2-node-lp (node)
- "Return relative left-paren position for NODE, if applicable.
-For `js2-elem-get-node' structs, returns left-bracket position.
-Note that the position may be nil in the case of a parse error."
- (cond
- ((js2-elem-get-node-p node)
- (js2-elem-get-node-lb node))
- ((js2-loop-node-p node)
- (js2-loop-node-lp node))
- ((js2-function-node-p node)
- (js2-function-node-lp node))
- ((js2-if-node-p node)
- (js2-if-node-lp node))
- ((js2-new-node-p node)
- (js2-new-node-lp node))
- ((js2-call-node-p node)
- (js2-call-node-lp node))
- ((js2-paren-node-p node)
- (js2-node-pos node))
- ((js2-switch-node-p node)
- (js2-switch-node-lp node))
- ((js2-catch-node-p node)
- (js2-catch-node-lp node))
- ((js2-let-node-p node)
- (js2-let-node-lp node))
- ((js2-array-comp-node-p node)
- (js2-array-comp-node-lp node))
- ((js2-with-node-p node)
- (js2-with-node-lp node))
- ((js2-xml-dot-query-node-p node)
- (1+ (js2-infix-node-op-pos node)))
- (t
- (error "Unsupported node type: %s" (js2-node-short-name node)))))
-
-;; Fake polymorphism... blech.
-(defsubst js2-node-rp (node)
- "Return relative right-paren position for NODE, if applicable.
-For `js2-elem-get-node' structs, returns right-bracket position.
-Note that the position may be nil in the case of a parse error."
- (cond
- ((js2-elem-get-node-p node)
- (js2-elem-get-node-lb node))
- ((js2-loop-node-p node)
- (js2-loop-node-rp node))
- ((js2-function-node-p node)
- (js2-function-node-rp node))
- ((js2-if-node-p node)
- (js2-if-node-rp node))
- ((js2-new-node-p node)
- (js2-new-node-rp node))
- ((js2-call-node-p node)
- (js2-call-node-rp node))
- ((js2-paren-node-p node)
- (+ (js2-node-pos node) (js2-node-len node)))
- ((js2-switch-node-p node)
- (js2-switch-node-rp node))
- ((js2-catch-node-p node)
- (js2-catch-node-rp node))
- ((js2-let-node-p node)
- (js2-let-node-rp node))
- ((js2-array-comp-node-p node)
- (js2-array-comp-node-rp node))
- ((js2-with-node-p node)
- (js2-with-node-rp node))
- ((js2-xml-dot-query-node-p node)
- (1+ (js2-xml-dot-query-node-rp node)))
- (t
- (error "Unsupported node type: %s" (js2-node-short-name node)))))
-
-(defsubst js2-node-first-child (node)
- "Returns the first element of `js2-node-child-list' for NODE."
- (car (js2-node-child-list node)))
-
-(defsubst js2-node-last-child (node)
- "Returns the last element of `js2-node-last-child' for NODE."
- (car (last (js2-node-child-list node))))
-
-(defun js2-node-prev-sibling (node)
- "Return the previous statement in parent.
-Works for parents supported by `js2-node-child-list'.
-Returns nil if NODE is not in the parent, or PARENT is
-not a supported node, or if NODE is the first child."
- (let* ((p (js2-node-parent node))
- (kids (js2-node-child-list p))
- (sib (car kids)))
- (while (and kids
- (not (eq node (cadr kids))))
- (setq kids (cdr kids)
- sib (car kids)))
- sib))
-
-(defun js2-node-next-sibling (node)
- "Return the next statement in parent block.
-Returns nil if NODE is not in the block, or PARENT is not
-a block node, or if NODE is the last statement."
- (let* ((p (js2-node-parent node))
- (kids (js2-node-child-list p)))
- (while (and kids
- (not (eq node (car kids))))
- (setq kids (cdr kids)))
- (cadr kids)))
-
-(defun js2-node-find-child-before (pos parent &optional after)
- "Find the last child that starts before POS in parent.
-If AFTER is non-nil, returns first child starting after POS.
-POS is an absolute buffer position. PARENT is any node
-supported by `js2-node-child-list'.
-Returns nil if no applicable child is found."
- (let ((kids (if (js2-function-node-p parent)
- (js2-block-node-kids (js2-function-node-body parent))
- (js2-node-child-list parent)))
- (beg (if (js2-function-node-p parent)
- (js2-node-abs-pos (js2-function-node-body parent))
- (js2-node-abs-pos parent)))
- kid
- result
- fn
- (continue t))
- (setq fn (if after '> '<))
- (while (and kids continue)
- (setq kid (car kids))
- (if (funcall fn (+ beg (js2-node-pos kid)) pos)
- (setq result kid
- continue (if after nil t))
- (setq continue (if after t nil)))
- (setq kids (cdr kids)))
- result))
-
-(defun js2-node-find-child-after (pos parent)
- "Find first child that starts after POS in parent.
-POS is an absolute buffer position. PARENT is any node
-supported by `js2-node-child-list'.
-Returns nil if no applicable child is found."
- (js2-node-find-child-before pos parent 'after))
-
-(defun js2-node-replace-child (pos parent new-node)
- "Replace node at index POS in PARENT with NEW-NODE.
-Only works for parents supported by `js2-node-child-list'."
- (let ((kids (js2-node-child-list parent))
- (i 0))
- (while (< i pos)
- (setq kids (cdr kids)
- i (1+ i)))
- (setcar kids new-node)
- (js2-node-add-children parent new-node)))
-
-(defun js2-node-buffer (n)
- "Return the buffer associated with AST N.
-Returns nil if the buffer is not set as a property on the root
-node, or if parent links were not recorded during parsing."
- (let ((root (js2-node-root n)))
- (and root
- (js2-ast-root-p root)
- (js2-ast-root-buffer root))))
-
-(defsubst js2-block-node-push (n kid)
- "Push js2-node KID onto the end of js2-block-node N's child list.
-KID is always added to the -end- of the kids list.
-Function also calls `js2-node-add-children' to add the parent link."
- (let ((kids (js2-node-child-list n)))
- (if kids
- (setcdr kids (nconc (cdr kids) (list kid)))
- (js2-node-set-child-list n (list kid)))
- (js2-node-add-children n kid)))
-
-(defun js2-node-string (node)
- (let ((buf (js2-node-buffer node))
- pos)
- (unless buf
- (error "No buffer available for node %s" node))
- (save-excursion
- (set-buffer buf)
- (buffer-substring-no-properties (setq pos (js2-node-abs-pos node))
- (+ pos (js2-node-len node))))))
-
-;; Container for storing the node we're looking for in a traversal.
-(js2-deflocal js2-discovered-node nil)
-
-;; Keep track of absolute node position during traversals.
-(js2-deflocal js2-visitor-offset nil)
-
-(js2-deflocal js2-node-search-point nil)
-
-(when js2-mode-dev-mode-p
- (defun js2-find-node-at-point ()
- (interactive)
- (let ((node (js2-node-at-point)))
- (message "%s" (or node "No node found at point"))))
- (defun js2-node-name-at-point ()
- (interactive)
- (let ((node (js2-node-at-point)))
- (message "%s" (if node
- (js2-node-short-name node)
- "No node found at point.")))))
-
-(defun js2-node-at-point (&optional pos skip-comments)
- "Return AST node at POS, a buffer position, defaulting to current point.
-The `js2-mode-ast' variable must be set to the current parse tree.
-Signals an error if the AST (`js2-mode-ast') is nil.
-Always returns a node - if it can't find one, it returns the root.
-If SKIP-COMMENTS is non-nil, comment nodes are ignored."
- (let ((ast js2-mode-ast)
- result)
- (unless ast
- (error "No JavaScript AST available"))
- ;; Look through comments first, since they may be inside nodes that
- ;; would otherwise report a match.
- (setq pos (or pos (point))
- result (if (> pos (js2-node-abs-end ast))
- ast
- (if (not skip-comments)
- (js2-comment-at-point pos))))
- (unless result
- (setq js2-discovered-node nil
- js2-visitor-offset 0
- js2-node-search-point pos)
- (unwind-protect
- (catch 'js2-visit-done
- (js2-visit-ast ast #'js2-node-at-point-visitor))
- (setq js2-visitor-offset nil
- js2-node-search-point nil))
- (setq result js2-discovered-node))
- ;; may have found a comment beyond end of last child node,
- ;; since visiting the ast-root looks at the comment-list last.
- (if (and skip-comments
- (js2-comment-node-p result))
- (setq result nil))
- (or result js2-mode-ast)))
-
-(defun js2-node-at-point-visitor (node end-p)
- (let ((rel-pos (js2-node-pos node))
- abs-pos
- abs-end
- (point js2-node-search-point))
- (cond
- (end-p
- ;; this evaluates to a non-nil return value, even if it's zero
- (decf js2-visitor-offset rel-pos))
- ;; we already looked for comments before visiting, and don't want them now
- ((js2-comment-node-p node)
- nil)
- (t
- (setq abs-pos (incf js2-visitor-offset rel-pos)
- ;; we only want to use the node if the point is before
- ;; the last character position in the node, so we decrement
- ;; the absolute end by 1.
- abs-end (+ abs-pos (js2-node-len node) -1))
- (cond
- ;; If this node starts after search-point, stop the search.
- ((> abs-pos point)
- (throw 'js2-visit-done nil))
- ;; If this node ends before the search-point, don't check kids.
- ((> point abs-end)
- nil)
- (t
- ;; Otherwise point is within this node, possibly in a child.
- (setq js2-discovered-node node)
- t)))))) ; keep processing kids to look for more specific match
-
-(defsubst js2-block-comment-p (node)
- "Return non-nil if NODE is a comment node of format `jsdoc' or `block'."
- (and (js2-comment-node-p node)
- (memq (js2-comment-node-format node) '(jsdoc block))))
-
-;; TODO: put the comments in a vector and binary-search them instead
-(defun js2-comment-at-point (&optional pos)
- "Look through scanned comment nodes for one containing POS.
-POS is a buffer position that defaults to current point.
-Function returns nil if POS was not in any comment node."
- (let ((ast js2-mode-ast)
- (x (or pos (point)))
- beg
- end)
- (unless ast
- (error "No JavaScript AST available"))
- (catch 'done
- ;; Comments are stored in lexical order.
- (dolist (comment (js2-ast-root-comments ast) nil)
- (setq beg (js2-node-abs-pos comment)
- end (+ beg (js2-node-len comment)))
- (if (and (>= x beg)
- (<= x end))
- (throw 'done comment))))))
-
-(defun js2-mode-find-parent-fn (node)
- "Find function enclosing NODE.
-Returns nil if NODE is not inside a function."
- (setq node (js2-node-parent node))
- (while (and node (not (js2-function-node-p node)))
- (setq node (js2-node-parent node)))
- (and (js2-function-node-p node) node))
-
-(defun js2-mode-find-enclosing-fn (node)
- "Find function or root enclosing NODE."
- (if (js2-ast-root-p node)
- node
- (setq node (js2-node-parent node))
- (while (not (or (js2-ast-root-p node)
- (js2-function-node-p node)))
- (setq node (js2-node-parent node)))
- node))
-
-(defun js2-mode-find-enclosing-node (beg end)
- "Find script or function fully enclosing BEG and END."
- (let ((node (js2-node-at-point beg))
- pos
- (continue t))
- (while continue
- (if (or (js2-ast-root-p node)
- (and (js2-function-node-p node)
- (<= (setq pos (js2-node-abs-pos node)) beg)
- (>= (+ pos (js2-node-len node)) end)))
- (setq continue nil)
- (setq node (js2-node-parent node))))
- node))
-
-(defun js2-node-parent-script-or-fn (node)
- "Find script or function immediately enclosing NODE.
-If NODE is the ast-root, returns nil."
- (if (js2-ast-root-p node)
- nil
- (setq node (js2-node-parent node))
- (while (and node (not (or (js2-function-node-p node)
- (js2-script-node-p node))))
- (setq node (js2-node-parent node)))
- node))
-
-(defsubst js2-nested-function-p (node)
- "Return t if NODE is a nested function, or is inside a nested function."
- (js2-function-node-p (if (js2-function-node-p node)
- (js2-node-parent-script-or-fn node)
- (js2-node-parent-script-or-fn
- (js2-node-parent-script-or-fn node)))))
-
-(defsubst js2-mode-shift-kids (kids start offset)
- (dolist (kid kids)
- (if (> (js2-node-pos kid) start)
- (incf (js2-node-pos kid) offset))))
-
-(defsubst js2-mode-shift-children (parent start offset)
- "Update start-positions of all children of PARENT beyond START."
- (let ((root (js2-node-root parent)))
- (js2-mode-shift-kids (js2-node-child-list parent) start offset)
- (js2-mode-shift-kids (js2-ast-root-comments root) start offset)))
-
-(defsubst js2-node-is-descendant (node ancestor)
- "Return t if NODE is a descendant of ANCESTOR."
- (while (and node
- (not (eq node ancestor)))
- (setq node (js2-node-parent node)))
- node)
-
-;;; visitor infrastructure
-
-(defun js2-visit-none (node callback)
- "Visitor for AST node that have no node children."
- nil)
-
-(defun js2-print-none (node indent)
- "Visitor for AST node with no printed representation.")
-
-(defun js2-print-body (node indent)
- "Print a statement, or a block without braces."
- (if (js2-block-node-p node)
- (dolist (kid (js2-block-node-kids node))
- (js2-print-ast kid indent))
- (js2-print-ast node indent)))
-
-(defun js2-print-list (args &optional delimiter)
- (loop with len = (length args)
- for arg in args
- for count from 1
- do
- (js2-print-ast arg 0)
- (if (< count len)
- (insert (or delimiter ", ")))))
-
-(defun js2-print-tree (ast)
- "Prints an AST to the current buffer.
-Makes `js2-ast-parent-nodes' available to the printer functions."
- (let ((max-lisp-eval-depth (max max-lisp-eval-depth 1500)))
- (js2-print-ast ast)))
-
-(defun js2-print-ast (node &optional indent)
- "Helper function for printing AST nodes.
-Requires `js2-ast-parent-nodes' to be non-nil.
-You should use `js2-print-tree' instead of this function."
- (let ((printer (get (aref node 0) 'js2-printer))
- (i (or indent 0))
- (pos (js2-node-abs-pos node)))
- ;; TODO: wedge comments in here somewhere
- (if printer
- (funcall printer node i))))
-
-(defconst js2-side-effecting-tokens
- (let ((tokens (make-bool-vector js2-num-tokens nil)))
- (dolist (tt (list js2-ASSIGN
- js2-ASSIGN_ADD
- js2-ASSIGN_BITAND
- js2-ASSIGN_BITOR
- js2-ASSIGN_BITXOR
- js2-ASSIGN_DIV
- js2-ASSIGN_LSH
- js2-ASSIGN_MOD
- js2-ASSIGN_MUL
- js2-ASSIGN_RSH
- js2-ASSIGN_SUB
- js2-ASSIGN_URSH
- js2-BLOCK
- js2-BREAK
- js2-CALL
- js2-CATCH
- js2-CATCH_SCOPE
- js2-CONST
- js2-CONTINUE
- js2-DEBUGGER
- js2-DEC
- js2-DELPROP
- js2-DEL_REF
- js2-DO
- js2-ELSE
- js2-EMPTY
- js2-ENTERWITH
- js2-EXPORT
- js2-EXPR_RESULT
- js2-FINALLY
- js2-FOR
- js2-FUNCTION
- js2-GOTO
- js2-IF
- js2-IFEQ
- js2-IFNE
- js2-IMPORT
- js2-INC
- js2-JSR
- js2-LABEL
- js2-LEAVEWITH
- js2-LET
- js2-LETEXPR
- js2-LOCAL_BLOCK
- js2-LOOP
- js2-NEW
- js2-REF_CALL
- js2-RETHROW
- js2-RETURN
- js2-RETURN_RESULT
- js2-SEMI
- js2-SETELEM
- js2-SETELEM_OP
- js2-SETNAME
- js2-SETPROP
- js2-SETPROP_OP
- js2-SETVAR
- js2-SET_REF
- js2-SET_REF_OP
- js2-SWITCH
- js2-TARGET
- js2-THROW
- js2-TRY
- js2-VAR
- js2-WHILE
- js2-WITH
- js2-WITHEXPR
- js2-YIELD))
- (aset tokens tt t))
- (if js2-instanceof-has-side-effects
- (aset tokens js2-INSTANCEOF t))
- tokens))
-
-(defun js2-node-has-side-effects (node)
- "Return t if NODE has side effects."
- (when node ; makes it easier to handle malformed expressions
- (let ((tt (js2-node-type node)))
- (cond
- ;; This doubtless needs some work, since EXPR_VOID is used
- ;; in several ways in Rhino, and I may not have caught them all.
- ;; I'll wait for people to notice incorrect warnings.
- ((and (= tt js2-EXPR_VOID)
- (js2-expr-stmt-node-p node)) ; but not if EXPR_RESULT
- (js2-node-has-side-effects (js2-expr-stmt-node-expr node)))
- ((= tt js2-COMMA)
- (js2-node-has-side-effects (js2-infix-node-right node)))
- ((or (= tt js2-AND)
- (= tt js2-OR))
- (or (js2-node-has-side-effects (js2-infix-node-right node))
- (js2-node-has-side-effects (js2-infix-node-left node))))
- ((= tt js2-HOOK)
- (and (js2-node-has-side-effects (js2-cond-node-true-expr node))
- (js2-node-has-side-effects (js2-cond-node-false-expr node))))
- ((js2-paren-node-p node)
- (js2-node-has-side-effects (js2-paren-node-expr node)))
- ((= tt js2-ERROR) ; avoid cascaded error messages
- nil)
- (t
- (aref js2-side-effecting-tokens tt))))))
-
-(defun js2-member-expr-leftmost-name (node)
- "For an expr such as foo.bar.baz, return leftmost node foo.
-NODE is any `js2-node' object. If it represents a member expression,
-which is any sequence of property gets, element-gets, function calls,
-or xml descendants/filter operators, then we look at the lexically
-leftmost (first) node in the chain. If it is a name-node we return it.
-Note that NODE can be a raw name-node and it will be returned as well.
-If NODE is not a name-node or member expression, or if it is a member
-expression whose leftmost target is not a name node, returns nil."
- (let ((continue t)
- result)
- (while (and continue (not result))
- (cond
- ((js2-name-node-p node)
- (setq result node))
- ((js2-prop-get-node-p node)
- (setq node (js2-prop-get-node-left node)))
- ;; TODO: handle call-nodes, xml-nodes, others?
- (t
- (setq continue nil))))
- result))
-
-(defconst js2-stmt-node-types
- (list js2-BLOCK
- js2-BREAK
- js2-CONTINUE
- js2-DEFAULT ; e4x "default xml namespace" statement
- js2-DO
- js2-EXPR_RESULT
- js2-EXPR_VOID
- js2-FOR
- js2-IF
- js2-RETURN
- js2-SWITCH
- js2-THROW
- js2-TRY
- js2-WHILE
- js2-WITH)
- "Node types that only appear in statement contexts.
-The list does not include nodes that always appear as the child
-of another specific statement type, such as switch-cases,
-catch and finally blocks, and else-clauses. The list also excludes
-nodes like yield, let and var, which may appear in either expression
-or statement context, and in the latter context always have a
-`js2-expr-stmt-node' parent. Finally, the list does not include
-functions or scripts, which are treated separately from statements
-by the JavaScript parser and runtime.")
-
-(defun js2-stmt-node-p (node)
- "Heuristic for figuring out if NODE is a statement.
-Some node types can appear in either an expression context or a
-statement context, e.g. let-nodes, yield-nodes, and var-decl nodes.
-For these node types in a statement context, the parent will be a
-`js2-expr-stmt-node'.
-Functions aren't included in the check."
- (memq (js2-node-type node) js2-stmt-node-types))
-
-(defsubst js2-mode-find-first-stmt (node)
- "Search upward starting from NODE looking for a statement.
-For purposes of this function, a `js2-function-node' counts."
- (while (not (or (js2-stmt-node-p node)
- (js2-function-node-p node)))
- (setq node (js2-node-parent node)))
- node)
-
-(defun js2-node-parent-stmt (node)
- "Return the node's first ancestor that is a statement.
-Returns nil if NODE is a `js2-ast-root'. Note that any expression
-appearing in a statement context will have a parent that is a
-`js2-expr-stmt-node' that will be returned by this function."
- (let ((parent (js2-node-parent node)))
- (if (or (null parent)
- (js2-stmt-node-p parent)
- (and (js2-function-node-p parent)
- (not (eq (js2-function-node-form parent)
- 'FUNCTION_EXPRESSION))))
- parent
- (js2-node-parent-stmt parent))))
-
-;; In the Mozilla Rhino sources, Roshan James writes:
-;; Does consistent-return analysis on the function body when strict mode is
-;; enabled.
-;;
-;; function (x) { return (x+1) }
-;;
-;; is ok, but
-;;
-;; function (x) { if (x < 0) return (x+1); }
-;;
-;; is not because the function can potentially return a value when the
-;; condition is satisfied and if not, the function does not explicitly
-;; return a value.
-;;
-;; This extends to checking mismatches such as "return" and "return <value>"
-;; used in the same function. Warnings are not emitted if inconsistent
-;; returns exist in code that can be statically shown to be unreachable.
-;; Ex.
-;; function (x) { while (true) { ... if (..) { return value } ... } }
-;;
-;; emits no warning. However if the loop had a break statement, then a
-;; warning would be emitted.
-;;
-;; The consistency analysis looks at control structures such as loops, ifs,
-;; switch, try-catch-finally blocks, examines the reachable code paths and
-;; warns the user about an inconsistent set of termination possibilities.
-;;
-;; These flags enumerate the possible ways a statement/function can
-;; terminate. These flags are used by endCheck() and by the Parser to
-;; detect inconsistent return usage.
-;;
-;; END_UNREACHED is reserved for code paths that are assumed to always be
-;; able to execute (example: throw, continue)
-;;
-;; END_DROPS_OFF indicates if the statement can transfer control to the
-;; next one. Statement such as return dont. A compound statement may have
-;; some branch that drops off control to the next statement.
-;;
-;; END_RETURNS indicates that the statement can return with no value.
-;; END_RETURNS_VALUE indicates that the statement can return a value.
-;;
-;; A compound statement such as
-;; if (condition) {
-;; return value;
-;; }
-;; Will be detected as (END_DROPS_OFF | END_RETURN_VALUE) by endCheck()
-
-(defconst js2-END_UNREACHED 0)
-(defconst js2-END_DROPS_OFF 1)
-(defconst js2-END_RETURNS 2)
-(defconst js2-END_RETURNS_VALUE 4)
-(defconst js2-END_YIELDS 8)
-
-(defun js2-has-consistent-return-usage (node)
- "Check that every return usage in a function body is consistent.
-Returns t if the function satisfies strict mode requirement."
- (let ((n (js2-end-check node)))
- ;; either it doesn't return a value in any branch...
- (or (js2-flag-not-set-p n js2-END_RETURNS_VALUE)
- ;; or it returns a value (or is unreached) at every branch
- (js2-flag-not-set-p n (logior js2-END_DROPS_OFF
- js2-END_RETURNS
- js2-END_YIELDS)))))
-
-(defun js2-end-check-if (node)
- "Returns in the then and else blocks must be consistent with each other.
-If there is no else block, then the return statement can fall through.
-Returns logical OR of END_* flags"
- (let ((th (js2-if-node-then-part node))
- (el (js2-if-node-else-part node)))
- (if (null th)
- js2-END_UNREACHED
- (logior (js2-end-check th) (if el
- (js2-end-check el)
- js2-END_DROPS_OFF)))))
-
-(defun js2-end-check-switch (node)
- "Consistency of return statements is checked between the case statements.
-If there is no default, then the switch can fall through. If there is a
-default, we check to see if all code paths in the default return or if
-there is a code path that can fall through.
-Returns logical OR of END_* flags."
- (let ((rv js2-END_UNREACHED)
- default-case)
- ;; examine the cases
- (catch 'break
- (dolist (c (js2-switch-node-cases node))
- (if (js2-case-node-expr c)
- (js2-set-flag rv (js2-end-check-block c))
- (setq default-case c)
- (throw 'break nil))))
- ;; we don't care how the cases drop into each other
- (js2-clear-flag rv js2-END_DROPS_OFF)
- ;; examine the default
- (js2-set-flag rv (if default-case
- (js2-end-check default-case)
- js2-END_DROPS_OFF))
- rv))
-
-(defun js2-end-check-try (node)
- "If the block has a finally, return consistency is checked in the
-finally block. If all code paths in the finally return, then the
-returns in the try-catch blocks don't matter. If there is a code path
-that does not return or if there is no finally block, the returns
-of the try and catch blocks are checked for mismatch.
-Returns logical OR of END_* flags."
- (let ((finally (js2-try-node-finally-block node))
- rv)
- ;; check the finally if it exists
- (setq rv (if finally
- (js2-end-check (js2-finally-node-body finally))
- js2-END_DROPS_OFF))
- ;; If the finally block always returns, then none of the returns
- ;; in the try or catch blocks matter.
- (when (js2-flag-set-p rv js2-END_DROPS_OFF)
- (js2-clear-flag rv js2-END_DROPS_OFF)
- ;; examine the try block
- (js2-set-flag rv (js2-end-check (js2-try-node-try-block node)))
- ;; check each catch block
- (dolist (cb (js2-try-node-catch-clauses node))
- (js2-set-flag rv (js2-end-check (js2-catch-node-block cb)))))
- rv))
-
-(defun js2-end-check-loop (node)
- "Return statement in the loop body must be consistent. The default
-assumption for any kind of a loop is that it will eventually terminate.
-The only exception is a loop with a constant true condition. Code that
-follows such a loop is examined only if one can statically determine
-that there is a break out of the loop.
-
- for(... ; ... ; ...) {}
- for(... in ... ) {}
- while(...) { }
- do { } while(...)
-
-Returns logical OR of END_* flags."
- (let ((rv (js2-end-check (js2-loop-node-body node)))
- (condition (cond
- ((js2-while-node-p node)
- (js2-while-node-condition node))
- ((js2-do-node-p node)
- (js2-do-node-condition node))
- ((js2-for-node-p node)
- (js2-for-node-condition node)))))
-
- ;; check to see if the loop condition is always true
- (if (and condition
- (eq (js2-always-defined-boolean-p condition) 'ALWAYS_TRUE))
- (js2-clear-flag rv js2-END_DROPS_OFF))
-
- ;; look for effect of breaks
- (js2-set-flag rv (js2-node-get-prop node
- 'CONTROL_BLOCK_PROP
- js2-END_UNREACHED))
- rv))
-
-(defun js2-end-check-block (node)
- "A general block of code is examined statement by statement.
-If any statement (even a compound one) returns in all branches, then
-subsequent statements are not examined.
-Returns logical OR of END_* flags."
- (let* ((rv js2-END_DROPS_OFF)
- (kids (js2-block-node-kids node))
- (n (car kids)))
- ;; Check each statment. If the statement can continue onto the next
- ;; one (i.e. END_DROPS_OFF is set), then check the next statement.
- (while (and n (js2-flag-set-p rv js2-END_DROPS_OFF))
- (js2-clear-flag rv js2-END_DROPS_OFF)
- (js2-set-flag rv (js2-end-check n))
- (setq kids (cdr kids)
- n (car kids)))
- rv))
-
-(defun js2-end-check-label (node)
- "A labeled statement implies that there may be a break to the label.
-The function processes the labeled statement and then checks the
-CONTROL_BLOCK_PROP property to see if there is ever a break to the
-particular label.
-Returns logical OR of END_* flags."
- (let ((rv (js2-end-check (js2-labeled-stmt-node-stmt node))))
- (logior rv (js2-node-get-prop node
- 'CONTROL_BLOCK_PROP
- js2-END_UNREACHED))))
-
-(defun js2-end-check-break (node)
- "When a break is encountered annotate the statement being broken
-out of by setting its CONTROL_BLOCK_PROP property.
-Returns logical OR of END_* flags."
- (and (js2-break-node-target node)
- (js2-node-set-prop (js2-break-node-target node)
- 'CONTROL_BLOCK_PROP
- js2-END_DROPS_OFF))
- js2-END_UNREACHED)
-
-(defun js2-end-check (node)
- "Examine the body of a function, doing a basic reachability analysis.
-Returns a combination of flags END_* flags that indicate
-how the function execution can terminate. These constitute only the
-pessimistic set of termination conditions. It is possible that at
-runtime certain code paths will never be actually taken. Hence this
-analysis will flag errors in cases where there may not be errors.
-Returns logical OR of END_* flags"
- (let (kid)
- (cond
- ((js2-break-node-p node)
- (js2-end-check-break node))
- ((js2-expr-stmt-node-p node)
- (if (setq kid (js2-expr-stmt-node-expr node))
- (js2-end-check kid)
- js2-END_DROPS_OFF))
- ((or (js2-continue-node-p node)
- (js2-throw-node-p node))
- js2-END_UNREACHED)
- ((js2-return-node-p node)
- (if (setq kid (js2-return-node-retval node))
- js2-END_RETURNS_VALUE
- js2-END_RETURNS))
- ((js2-loop-node-p node)
- (js2-end-check-loop node))
- ((js2-switch-node-p node)
- (js2-end-check-switch node))
- ((js2-labeled-stmt-node-p node)
- (js2-end-check-label node))
- ((js2-if-node-p node)
- (js2-end-check-if node))
- ((js2-try-node-p node)
- (js2-end-check-try node))
- ((js2-block-node-p node)
- (if (null (js2-block-node-kids node))
- js2-END_DROPS_OFF
- (js2-end-check-block node)))
- ((js2-yield-node-p node)
- js2-END_YIELDS)
- (t
- js2-END_DROPS_OFF))))
-
-(defun js2-always-defined-boolean-p (node)
- "Check if NODE always evaluates to true or false in boolean context.
-Returns 'ALWAYS_TRUE, 'ALWAYS_FALSE, or nil if it's neither always true
-nor always false."
- (let ((tt (js2-node-type node))
- num)
- (cond
- ((or (= tt js2-FALSE) (= tt js2-NULL))
- 'ALWAYS_FALSE)
- ((= tt js2-TRUE)
- 'ALWAYS_TRUE)
- ((= tt js2-NUMBER)
- (setq num (js2-number-node-num-value node))
- (if (and (not (eq num 0.0e+NaN))
- (not (zerop num)))
- 'ALWAYS_TRUE
- 'ALWAYS_FALSE))
- (t
- nil))))
-
-;;; Scanner -- a port of Mozilla Rhino's lexer.
-;; Corresponds to Rhino files Token.java and TokenStream.java.
-
-(defvar js2-tokens nil
- "List of all defined token names.") ; initialized in `js2-token-names'
-
-(defconst js2-token-names
- (let* ((names (make-vector js2-num-tokens -1))
- (case-fold-search nil) ; only match js2-UPPER_CASE
- (syms (apropos-internal "^js2-\\(?:[A-Z_]+\\)")))
- (loop for sym in syms
- for i from 0
- do
- (unless (or (memq sym '(js2-EOF_CHAR js2-ERROR))
- (not (boundp sym)))
- (aset names (symbol-value sym) ; code, e.g. 152
- (substring (symbol-name sym) 4)) ; name, e.g. "LET"
- (push sym js2-tokens)))
- names)
- "Vector mapping int values to token string names, sans `js2-' prefix.")
-
-(defun js2-token-name (tok)
- "Return a string name for TOK, a token symbol or code.
-Signals an error if it's not a recognized token."
- (let ((code tok))
- (if (symbolp tok)
- (setq code (symbol-value tok)))
- (if (eq code -1)
- "ERROR"
- (if (and (numberp code)
- (not (minusp code))
- (< code js2-num-tokens))
- (aref js2-token-names code)
- (error "Invalid token: %s" code)))))
-
-(defsubst js2-token-sym (tok)
- "Return symbol for TOK given its code, e.g. 'js2-LP for code 86."
- (intern (js2-token-name tok)))
-
-(defconst js2-token-codes
- (let ((table (make-hash-table :test 'eq :size 256)))
- (loop for name across js2-token-names
- for sym = (intern (concat "js2-" name))
- do
- (puthash sym (symbol-value sym) table))
- ;; clean up a few that are "wrong" in Rhino's token codes
- (puthash 'js2-DELETE js2-DELPROP table)
- table)
- "Hashtable mapping token symbols to their bytecodes.")
-
-(defsubst js2-token-code (sym)
- "Return code for token symbol SYM, e.g. 86 for 'js2-LP."
- (or (gethash sym js2-token-codes)
- (error "Invalid token symbol: %s " sym))) ; signal code bug
-
-(defsubst js2-report-scan-error (msg &optional no-throw beg len)
- (setq js2-token-end js2-ts-cursor)
- (js2-report-error msg nil
- (or beg js2-token-beg)
- (or len (- js2-token-end js2-token-beg)))
- (unless no-throw
- (throw 'return js2-ERROR)))
-
-(defsubst js2-get-string-from-buffer ()
- "Reverse the char accumulator and return it as a string."
- (setq js2-token-end js2-ts-cursor)
- (if js2-ts-string-buffer
- (apply #'string (nreverse js2-ts-string-buffer))
- ""))
-
-;; TODO: could potentially avoid a lot of consing by allocating a
-;; char buffer the way Rhino does.
-(defsubst js2-add-to-string (c)
- (push c js2-ts-string-buffer))
-
-;; Note that when we "read" the end-of-file, we advance js2-ts-cursor
-;; to (1+ (point-max)), which lets the scanner treat end-of-file like
-;; any other character: when it's not part of the current token, we
-;; unget it, allowing it to be read again by the following call.
-(defsubst js2-unget-char ()
- (decf js2-ts-cursor))
-
-;; Rhino distinguishes \r and \n line endings. We don't need to
-;; because we only scan from Emacs buffers, which always use \n.
-(defsubst js2-get-char ()
- "Read and return the next character from the input buffer.
-Increments `js2-ts-lineno' if the return value is a newline char.
-Updates `js2-ts-cursor' to the point after the returned char.
-Returns `js2-EOF_CHAR' if we hit the end of the buffer.
-Also updates `js2-ts-hit-eof' and `js2-ts-line-start' as needed."
- (let (c)
- ;; check for end of buffer
- (if (>= js2-ts-cursor (point-max))
- (setq js2-ts-hit-eof t
- js2-ts-cursor (1+ js2-ts-cursor)
- c js2-EOF_CHAR) ; return value
- ;; otherwise read next char
- (setq c (char-before (incf js2-ts-cursor)))
- ;; if we read a newline, update counters
- (if (= c ?\n)
- (setq js2-ts-line-start js2-ts-cursor
- js2-ts-lineno (1+ js2-ts-lineno)))
- ;; TODO: skip over format characters
- c)))
-
-(defsubst js2-read-unicode-escape ()
- "Read a \\uNNNN sequence from the input.
-Assumes the ?\ and ?u have already been read.
-Returns the unicode character, or nil if it wasn't a valid character.
-Doesn't change the values of any scanner variables."
- ;; I really wish I knew a better way to do this, but I can't
- ;; find the Emacs function that takes a 16-bit int and converts
- ;; it to a Unicode/utf-8 character. So I basically eval it with (read).
- ;; Have to first check that it's 4 hex characters or it may stop
- ;; the read early.
- (ignore-errors
- (let ((s (buffer-substring-no-properties js2-ts-cursor
- (+ 4 js2-ts-cursor))))
- (if (string-match "[a-zA-Z0-9]\\{4\\}" s)
- (read (concat "?\\u" s))))))
-
-(defsubst js2-match-char (test)
- "Consume and return next character if it matches TEST, a character.
-Returns nil and consumes nothing if TEST is not the next character."
- (let ((c (js2-get-char)))
- (if (eq c test)
- t
- (js2-unget-char)
- nil)))
-
-(defsubst js2-peek-char ()
- (prog1
- (js2-get-char)
- (js2-unget-char)))
-
-(defsubst js2-java-identifier-start-p (c)
- (or
- (memq c '(?$ ?_))
- (js2-char-uppercase-p c)
- (js2-char-lowercase-p c)))
-
-(defsubst js2-java-identifier-part-p (c)
- "Implementation of java.lang.Character.isJavaIdentifierPart()"
- ;; TODO: make me Unicode-friendly. See comments above.
- (or
- (memq c '(?$ ?_))
- (js2-char-uppercase-p c)
- (js2-char-lowercase-p c)
- (and (>= c ?0) (<= c ?9))))
-
-(defsubst js2-alpha-p (c)
- (cond ((and (<= ?A c) (<= c ?Z)) t)
- ((and (<= ?a c) (<= c ?z)) t)
- (t nil)))
-
-(defsubst js2-digit-p (c)
- (and (<= ?0 c) (<= c ?9)))
-
-(defsubst js2-js-space-p (c)
- (if (<= c 127)
- (memq c '(#x20 #x9 #xB #xC #xD))
- (or
- (eq c #xA0)
- ;; TODO: change this nil to check for Unicode space character
- nil)))
-
-(defconst js2-eol-chars (list js2-EOF_CHAR ?\n ?\r))
-
-(defsubst js2-skip-line ()
- "Skip to end of line"
- (let (c)
- (while (not (memq (setq c (js2-get-char)) js2-eol-chars)))
- (js2-unget-char)
- (setq js2-token-end js2-ts-cursor)))
-
-(defun js2-init-scanner (&optional buf line)
- "Create token stream for BUF starting on LINE.
-BUF defaults to current-buffer and line defaults to 1.
-
-A buffer can only have one scanner active at a time, which yields
-dramatically simpler code than using a defstruct. If you need to
-have simultaneous scanners in a buffer, copy the regions to scan
-into temp buffers."
- (save-excursion
- (when buf
- (set-buffer buf))
- (setq js2-ts-dirty-line nil
- js2-ts-regexp-flags nil
- js2-ts-string ""
- js2-ts-number nil
- js2-ts-hit-eof nil
- js2-ts-line-start 0
- js2-ts-lineno (or line 1)
- js2-ts-line-end-char -1
- js2-ts-cursor (point-min)
- js2-ts-is-xml-attribute nil
- js2-ts-xml-is-tag-content nil
- js2-ts-xml-open-tags-count 0
- js2-ts-string-buffer nil)))
-
-;; This function uses the cached op, string and number fields in
-;; TokenStream; if getToken has been called since the passed token
-;; was scanned, the op or string printed may be incorrect.
-(defun js2-token-to-string (token)
- ;; Not sure where this function is used in Rhino. Not tested.
- (if (not js2-debug-print-trees)
- ""
- (let ((name (js2-token-name token)))
- (cond
- ((memq token (list js2-STRING js2-REGEXP js2-NAME))
- (concat name " `" js2-ts-string "'"))
- ((eq token js2-NUMBER)
- (format "NUMBER %g" js2-ts-number))
- (t
- name)))))
-
-(defconst js2-keywords
- '(break
- case catch const continue
- debugger default delete do
- else enum
- false finally for function
- if in instanceof import
- let
- new null
- return
- switch
- this throw true try typeof
- var void
- while with
- yield))
-
-;; Token names aren't exactly the same as the keywords, unfortunately.
-;; E.g. enum isn't in the tokens, and delete is js2-DELPROP.
-(defconst js2-kwd-tokens
- (let ((table (make-vector js2-num-tokens nil))
- (tokens
- (list js2-BREAK
- js2-CASE js2-CATCH js2-CONST js2-CONTINUE
- js2-DEBUGGER js2-DEFAULT js2-DELPROP js2-DO
- js2-ELSE
- js2-FALSE js2-FINALLY js2-FOR js2-FUNCTION
- js2-IF js2-IN js2-INSTANCEOF js2-IMPORT
- js2-LET
- js2-NEW js2-NULL
- js2-RETURN
- js2-SWITCH
- js2-THIS js2-THROW js2-TRUE js2-TRY js2-TYPEOF
- js2-VAR
- js2-WHILE js2-WITH
- js2-YIELD)))
- (dolist (i tokens)
- (aset table i 'font-lock-keyword-face))
- (aset table js2-STRING 'font-lock-string-face)
- (aset table js2-REGEXP 'font-lock-string-face)
- (aset table js2-COMMENT 'font-lock-comment-face)
- (aset table js2-THIS 'font-lock-builtin-face)
- (aset table js2-VOID 'font-lock-constant-face)
- (aset table js2-NULL 'font-lock-constant-face)
- (aset table js2-TRUE 'font-lock-constant-face)
- (aset table js2-FALSE 'font-lock-constant-face)
- table)
- "Vector whose values are non-nil for tokens that are keywords.
-The values are default faces to use for highlighting the keywords.")
-
-(defconst js2-reserved-words
- '(abstract
- boolean byte
- char class
- double
- enum export extends
- final float
- goto
- implements import int interface
- long
- native
- package private protected public
- short static super synchronized
- throws transient
- volatile))
-
-(defconst js2-keyword-names
- (let ((table (make-hash-table :test 'equal)))
- (loop for k in js2-keywords
- do (puthash
- (symbol-name k) ; instanceof
- (intern (concat "js2-"
- (upcase (symbol-name k)))) ; js2-INSTANCEOF
- table))
- table)
- "JavaScript keywords by name, mapped to their symbols.")
-
-(defconst js2-reserved-word-names
- (let ((table (make-hash-table :test 'equal)))
- (loop for k in js2-reserved-words
- do
- (puthash (symbol-name k) 'js2-RESERVED table))
- table)
- "JavaScript reserved words by name, mapped to 'js2-RESERVED.")
-
-(defsubst js2-collect-string (buf)
- "Convert BUF, a list of chars, to a string.
-Reverses BUF before converting."
- (cond
- ((stringp buf)
- buf)
- ((null buf) ; for emacs21 compat
- "")
- (t
- (if buf
- (apply #'string (nreverse buf))
- ""))))
-
-(defun js2-string-to-keyword (s)
- "Return token for S, a string, if S is a keyword or reserved word.
-Returns a symbol such as 'js2-BREAK, or nil if not keyword/reserved."
- (or (gethash s js2-keyword-names)
- (gethash s js2-reserved-word-names)))
-
-(defsubst js2-ts-set-char-token-bounds ()
- "Used when next token is one character."
- (setq js2-token-beg (1- js2-ts-cursor)
- js2-token-end js2-ts-cursor))
-
-(defsubst js2-ts-return (token)
- "Return an N-character TOKEN from `js2-get-token'.
-Updates `js2-token-end' accordingly."
- (setq js2-token-end js2-ts-cursor)
- (throw 'return token))
-
-(defsubst js2-x-digit-to-int (c accumulator)
- "Build up a hex number.
-If C is a hexadecimal digit, return ACCUMULATOR * 16 plus
-corresponding number. Otherwise return -1."
- (catch 'return
- (catch 'check
- ;; Use 0..9 < A..Z < a..z
- (cond
- ((<= c ?9)
- (decf c ?0)
- (if (<= 0 c)
- (throw 'check nil)))
- ((<= c ?F)
- (when (<= ?A c)
- (decf c (- ?A 10))
- (throw 'check nil)))
- ((<= c ?f)
- (when (<= ?a c)
- (decf c (- ?a 10))
- (throw 'check nil))))
- (throw 'return -1))
- (logior c (lsh accumulator 4))))
-
-(defun js2-get-token ()
- "Return next JavaScript token, an int such as js2-RETURN."
- (let (c
- c1
- identifier-start
- is-unicode-escape-start
- contains-escape
- escape-val
- escape-start
- str
- result
- base
- is-integer
- quote-char
- val
- look-for-slash
- continue)
- (catch 'return
- (while t
- ;; Eat whitespace, possibly sensitive to newlines.
- (setq continue t)
- (while continue
- (setq c (js2-get-char))
- (cond
- ((eq c js2-EOF_CHAR)
- (js2-ts-set-char-token-bounds)
- (throw 'return js2-EOF))
- ((eq c ?\n)
- (js2-ts-set-char-token-bounds)
- (setq js2-ts-dirty-line nil)
- (throw 'return js2-EOL))
- ((not (js2-js-space-p c))
- (if (/= c ?-) ; in case end of HTML comment
- (setq js2-ts-dirty-line t))
- (setq continue nil))))
- ;; Assume the token will be 1 char - fixed up below.
- (js2-ts-set-char-token-bounds)
- (when (eq c ?@)
- (throw 'return js2-XMLATTR))
- ;; identifier/keyword/instanceof?
- ;; watch out for starting with a <backslash>
- (cond
- ((eq c ?\\)
- (setq c (js2-get-char))
- (if (eq c ?u)
- (setq identifier-start t
- is-unicode-escape-start t
- js2-ts-string-buffer nil)
- (setq identifier-start nil)
- (js2-unget-char)
- (setq c ?\\)))
- (t
- (when (setq identifier-start (js2-java-identifier-start-p c))
- (setq js2-ts-string-buffer nil)
- (js2-add-to-string c))))
- (when identifier-start
- (setq contains-escape is-unicode-escape-start)
- (catch 'break
- (while t
- (if is-unicode-escape-start
- ;; strictly speaking we should probably push-back
- ;; all the bad characters if the <backslash>uXXXX
- ;; sequence is malformed. But since there isn't a
- ;; correct context(is there?) for a bad Unicode
- ;; escape sequence in an identifier, we can report
- ;; an error here.
- (progn
- (setq escape-val 0)
- (dotimes (i 4)
- (setq c (js2-get-char)
- escape-val (js2-x-digit-to-int c escape-val))
- ;; Next check takes care of c < 0 and bad escape
- (if (minusp escape-val)
- (throw 'break nil)))
- (if (minusp escape-val)
- (js2-report-scan-error "msg.invalid.escape" t))
- (js2-add-to-string escape-val)
- (setq is-unicode-escape-start nil))
- (setq c (js2-get-char))
- (cond
- ((eq c ?\\)
- (setq c (js2-get-char))
- (if (eq c ?u)
- (setq is-unicode-escape-start t
- contains-escape t)
- (js2-report-scan-error "msg.illegal.character" t)))
- (t
- (if (or (eq c js2-EOF_CHAR)
- (not (js2-java-identifier-part-p c)))
- (throw 'break nil))
- (js2-add-to-string c))))))
- (js2-unget-char)
- (setq str (js2-get-string-from-buffer))
- (unless contains-escape
- ;; OPT we shouldn't have to make a string (object!) to
- ;; check if it's a keyword.
- ;; Return the corresponding token if it's a keyword
- (when (setq result (js2-string-to-keyword str))
- (if (and (< js2-language-version 170)
- (memq result '(js2-LET js2-YIELD)))
- ;; LET and YIELD are tokens only in 1.7 and later
- (setq result 'js2-NAME))
- (if (not (eq result js2-RESERVED))
- (throw 'return (js2-token-code result)))
- (js2-report-warning "msg.reserved.keyword" str)))
- ;; If we want to intern these as Rhino does, just use (intern str)
- (setq js2-ts-string str)
- (throw 'return js2-NAME)) ; end identifier/kwd check
- ;; is it a number?
- (when (or (js2-digit-p c)
- (and (eq c ?.) (js2-digit-p (js2-peek-char))))
- (setq js2-ts-string-buffer nil
- base 10)
- (when (eq c ?0)
- (setq c (js2-get-char))
- (cond
- ((or (eq c ?x) (eq c ?X))
- (setq base 16)
- (setq c (js2-get-char)))
- ((js2-digit-p c)
- (setq base 8))
- (t
- (js2-add-to-string ?0))))
- (if (eq base 16)
- (while (<= 0 (js2-x-digit-to-int c 0))
- (js2-add-to-string c)
- (setq c (js2-get-char)))
- (while (and (<= ?0 c) (<= c ?9))
- ;; We permit 08 and 09 as decimal numbers, which
- ;; makes our behavior a superset of the ECMA
- ;; numeric grammar. We might not always be so
- ;; permissive, so we warn about it.
- (when (and (eq base 8) (>= c ?8))
- (js2-report-warning "msg.bad.octal.literal"
- (if (eq c ?8) "8" "9"))
- (setq base 10))
- (js2-add-to-string c)
- (setq c (js2-get-char))))
- (setq is-integer t)
- (when (and (eq base 10) (memq c '(?. ?e ?E)))
- (setq is-integer nil)
- (when (eq c ?.)
- (loop do
- (js2-add-to-string c)
- (setq c (js2-get-char))
- while (js2-digit-p c)))
- (when (memq c '(?e ?E))
- (js2-add-to-string c)
- (setq c (js2-get-char))
- (when (memq c '(?+ ?-))
- (js2-add-to-string c)
- (setq c (js2-get-char)))
- (unless (js2-digit-p c)
- (js2-report-scan-error "msg.missing.exponent" t))
- (loop do
- (js2-add-to-string c)
- (setq c (js2-get-char))
- while (js2-digit-p c))))
- (js2-unget-char)
- (setq js2-ts-string (js2-get-string-from-buffer)
- js2-ts-number
- (if (and (eq base 10) (not is-integer))
- (string-to-number js2-ts-string)
- ;; TODO: call runtime number-parser. Some of it is in
- ;; js2-util.el, but I need to port
ScriptRuntime.stringToNumber.
- (string-to-number js2-ts-string)))
- (throw 'return js2-NUMBER))
- ;; is it a string?
- (when (memq c '(?\" ?\'))
- ;; We attempt to accumulate a string the fast way, by
- ;; building it directly out of the reader. But if there
- ;; are any escaped characters in the string, we revert to
- ;; building it out of a string buffer.
- (setq quote-char c
- js2-ts-string-buffer nil
- c (js2-get-char))
- (catch 'break
- (while (/= c quote-char)
- (catch 'continue
- (when (or (eq c ?\n) (eq c js2-EOF_CHAR))
- (js2-unget-char)
- (setq js2-token-end js2-ts-cursor)
- (js2-report-error "msg.unterminated.string.lit")
- (throw 'return js2-STRING))
- (when (eq c ?\\)
- ;; We've hit an escaped character
- (setq c (js2-get-char))
- (case c
- (?b (setq c ?\b))
- (?f (setq c ?\f))
- (?n (setq c ?\n))
- (?r (setq c ?\r))
- (?t (setq c ?\t))
- (?v (setq c ?\v))
- (?u
- (setq c1 (js2-read-unicode-escape))
- (if js2-parse-ide-mode
- (if c1
- (progn
- ;; just copy the string in IDE-mode
- (js2-add-to-string ?\\)
- (js2-add-to-string ?u)
- (dotimes (i 3)
- (js2-add-to-string (js2-get-char)))
- (setq c (js2-get-char))) ; added at end of loop
- ;; flag it as an invalid escape
- (js2-report-warning "msg.invalid.escape"
- nil (- js2-ts-cursor 2) 6))
- ;; Get 4 hex digits; if the u escape is not
- ;; followed by 4 hex digits, use 'u' + the
- ;; literal character sequence that follows.
- (js2-add-to-string ?u)
- (setq escape-val 0)
- (dotimes (i 4)
- (setq c (js2-get-char)
- escape-val (js2-x-digit-to-int c escape-val))
- (if (minusp escape-val)
- (throw 'continue nil))
- (js2-add-to-string c))
- ;; prepare for replace of stored 'u' sequence by escape
value
- (setq js2-ts-string-buffer (nthcdr 5
js2-ts-string-buffer)
- c escape-val)))
- (?x
- ;; Get 2 hex digits, defaulting to 'x'+literal
- ;; sequence, as above.
- (setq c (js2-get-char)
- escape-val (js2-x-digit-to-int c 0))
- (if (minusp escape-val)
- (progn
- (js2-add-to-string ?x)
- (throw 'continue nil))
- (setq c1 c
- c (js2-get-char)
- escape-val (js2-x-digit-to-int c escape-val))
- (if (minusp escape-val)
- (progn
- (js2-add-to-string ?x)
- (js2-add-to-string c1)
- (throw 'continue nil))
- ;; got 2 hex digits
- (setq c escape-val))))
- (?\n
- ;; Remove line terminator after escape to follow
- ;; SpiderMonkey and C/C++
- (setq c (js2-get-char))
- (throw 'continue nil))
- (t
- (when (and (<= ?0 c) (< c ?8))
- (setq val (- c ?0)
- c (js2-get-char))
- (when (and (<= ?0 c) (< c ?8))
- (setq val (- (+ (* 8 val) c) ?0)
- c (js2-get-char))
- (when (and (<= ?0 c)
- (< c ?8)
- (< val #o37))
- ;; c is 3rd char of octal sequence only
- ;; if the resulting val <= 0377
- (setq val (- (+ (* 8 val) c) ?0)
- c (js2-get-char))))
- (js2-unget-char)
- (setq c val)))))
- (js2-add-to-string c)
- (setq c (js2-get-char)))))
- (setq js2-ts-string (js2-get-string-from-buffer))
- (throw 'return js2-STRING))
- (case c
- (?\;
- (throw 'return js2-SEMI))
- (?\[
- (throw 'return js2-LB))
- (?\]
- (throw 'return js2-RB))
- (?{
- (throw 'return js2-LC))
- (?}
- (throw 'return js2-RC))
- (?\(
- (throw 'return js2-LP))
- (?\)
- (throw 'return js2-RP))
- (?,
- (throw 'return js2-COMMA))
- (??
- (throw 'return js2-HOOK))
- (?:
- (if (js2-match-char ?:)
- (js2-ts-return js2-COLONCOLON)
- (throw 'return js2-COLON)))
- (?.
- (if (js2-match-char ?.)
- (js2-ts-return js2-DOTDOT)
- (if (js2-match-char ?\()
- (js2-ts-return js2-DOTQUERY)
- (throw 'return js2-DOT))))
- (?|
- (if (js2-match-char ?|)
- (throw 'return js2-OR)
- (if (js2-match-char ?=)
- (js2-ts-return js2-ASSIGN_BITOR)
- (throw 'return js2-BITOR))))
- (?^
- (if (js2-match-char ?=)
- (js2-ts-return js2-ASSIGN_BITOR)
- (throw 'return js2-BITXOR)))
- (?&
- (if (js2-match-char ?&)
- (throw 'return js2-AND)
- (if (js2-match-char ?=)
- (js2-ts-return js2-ASSIGN_BITAND)
- (throw 'return js2-BITAND))))
- (?=
- (if (js2-match-char ?=)
- (if (js2-match-char ?=)
- (js2-ts-return js2-SHEQ)
- (throw 'return js2-EQ))
- (throw 'return js2-ASSIGN)))
- (?!
- (if (js2-match-char ?=)
- (if (js2-match-char ?=)
- (js2-ts-return js2-SHNE)
- (js2-ts-return js2-NE))
- (throw 'return js2-NOT)))
- (?<
- ;; NB:treat HTML begin-comment as comment-till-eol
- (when (js2-match-char ?!)
- (when (js2-match-char ?-)
- (when (js2-match-char ?-)
- (js2-skip-line)
- (setq js2-ts-comment-type 'html)
- (throw 'return js2-COMMENT)))
- (js2-unget-char))
- (if (js2-match-char ?<)
- (if (js2-match-char ?=)
- (js2-ts-return js2-ASSIGN_LSH)
- (js2-ts-return js2-LSH))
- (if (js2-match-char ?=)
- (js2-ts-return js2-LE)
- (throw 'return js2-LT))))
- (?>
- (if (js2-match-char ?>)
- (if (js2-match-char ?>)
- (if (js2-match-char ?=)
- (js2-ts-return js2-ASSIGN_URSH)
- (js2-ts-return js2-URSH))
- (if (js2-match-char ?=)
- (js2-ts-return js2-ASSIGN_RSH)
- (js2-ts-return js2-RSH)))
- (if (js2-match-char ?=)
- (js2-ts-return js2-GE)
- (throw 'return js2-GT))))
- (?*
- (if (js2-match-char ?=)
- (js2-ts-return js2-ASSIGN_MUL)
- (throw 'return js2-MUL)))
- (?/
- ;; is it a // comment?
- (when (js2-match-char ?/)
- (setq js2-token-beg (- js2-ts-cursor 2))
- (js2-skip-line)
- (setq js2-ts-comment-type 'line)
- ;; include newline so highlighting goes to end of window
- (incf js2-token-end)
- (throw 'return js2-COMMENT))
- ;; is it a /* comment?
- (when (js2-match-char ?*)
- (setq look-for-slash nil
- js2-token-beg (- js2-ts-cursor 2)
- js2-ts-comment-type
- (if (js2-match-char ?*)
- (progn
- (setq look-for-slash t)
- 'jsdoc)
- 'block))
- (while t
- (setq c (js2-get-char))
- (cond
- ((eq c js2-EOF_CHAR)
- (setq js2-token-end (1- js2-ts-cursor))
- (js2-report-error "msg.unterminated.comment")
- (throw 'return js2-COMMENT))
- ((eq c ?*)
- (setq look-for-slash t))
- ((eq c ?/)
- (if look-for-slash
- (js2-ts-return js2-COMMENT)))
- (t
- (setq look-for-slash nil
- js2-token-end js2-ts-cursor)))))
- (if (js2-match-char ?=)
- (js2-ts-return js2-ASSIGN_DIV)
- (throw 'return js2-DIV)))
- (?#
- (when js2-skip-preprocessor-directives
- (js2-skip-line)
- (setq js2-ts-comment-type 'preprocessor
- js2-token-end js2-ts-cursor)
- (throw 'return js2-COMMENT))
- (throw 'return js2-ERROR))
- (?%
- (if (js2-match-char ?=)
- (js2-ts-return js2-ASSIGN_MOD)
- (throw 'return js2-MOD)))
- (?~
- (throw 'return js2-BITNOT))
- (?+
- (if (js2-match-char ?=)
- (js2-ts-return js2-ASSIGN_ADD)
- (if (js2-match-char ?+)
- (js2-ts-return js2-INC)
- (throw 'return js2-ADD))))
- (?-
- (cond
- ((js2-match-char ?=)
- (setq c js2-ASSIGN_SUB))
- ((js2-match-char ?-)
- (unless js2-ts-dirty-line
- ;; treat HTML end-comment after possible whitespace
- ;; after line start as comment-until-eol
- (when (js2-match-char ?>)
- (js2-skip-line)
- (setq js2-ts-comment-type 'html)
- (throw 'return js2-COMMENT)))
- (setq c js2-DEC))
- (t
- (setq c js2-SUB)))
- (setq js2-ts-dirty-line t)
- (js2-ts-return c))
- (otherwise
- (js2-report-scan-error "msg.illegal.character")))))))
-
-(defun js2-read-regexp (start-token)
- "Called by parser when it gets / or /= in literal context."
- (let (c
- err
- in-class ; inside a '[' .. ']' character-class
- flags
- (continue t))
- (setq js2-token-beg js2-ts-cursor
- js2-ts-string-buffer nil
- js2-ts-regexp-flags nil)
- (if (eq start-token js2-ASSIGN_DIV)
- ;; mis-scanned /=
- (js2-add-to-string ?=)
- (if (not (eq start-token js2-DIV))
- (error "failed assertion")))
- (while (and (not err)
- (or (/= (setq c (js2-get-char)) ?/)
- in-class))
- (cond
- ((or (= c ?\n)
- (= c js2-EOF_CHAR))
- (setq js2-token-end (1- js2-ts-cursor)
- err t
- js2-ts-string (js2-collect-string js2-ts-string-buffer))
- (js2-report-error "msg.unterminated.re.lit"))
- (t (cond
- ((= c ?\\)
- (js2-add-to-string c)
- (setq c (js2-get-char)))
- ((= c ?\[)
- (setq in-class t))
- ((= c ?\])
- (setq in-class nil)))
- (js2-add-to-string c))))
- (unless err
- (while continue
- (cond
- ((js2-match-char ?g)
- (push ?g flags))
- ((js2-match-char ?i)
- (push ?i flags))
- ((js2-match-char ?m)
- (push ?m flags))
- (t
- (setq continue nil))))
- (if (js2-alpha-p (js2-peek-char))
- (js2-report-scan-error "msg.invalid.re.flag" t
- js2-ts-cursor 1))
- (setq js2-ts-string (js2-collect-string js2-ts-string-buffer)
- js2-ts-regexp-flags (js2-collect-string flags)
- js2-token-end js2-ts-cursor)
- ;; tell `parse-partial-sexp' to ignore this range of chars
- (put-text-property js2-token-beg js2-token-end 'syntax-class '(2)))))
-
-(defun js2-get-first-xml-token ()
- (setq js2-ts-xml-open-tags-count 0
- js2-ts-is-xml-attribute nil
- js2-ts-xml-is-tag-content nil)
- (js2-unget-char)
- (js2-get-next-xml-token))
-
-(defsubst js2-xml-discard-string ()
- "Throw away the string in progress and flag an XML parse error."
- (setq js2-ts-string-buffer nil
- js2-ts-string nil)
- (js2-report-scan-error "msg.XML.bad.form" t))
-
-(defun js2-get-next-xml-token ()
- (setq js2-ts-string-buffer nil ; for recording the XML
- js2-token-beg js2-ts-cursor)
- (let (c result)
- (setq result
- (catch 'return
- (while t
- (setq c (js2-get-char))
- (cond
- ((= c js2-EOF_CHAR)
- (throw 'return js2-ERROR))
- (js2-ts-xml-is-tag-content
- (case c
- (?>
- (js2-add-to-string c)
- (setq js2-ts-xml-is-tag-content nil
- js2-ts-is-xml-attribute nil))
- (?/
- (js2-add-to-string c)
- (when (eq ?> (js2-peek-char))
- (setq c (js2-get-char))
- (js2-add-to-string c)
- (setq js2-ts-xml-is-tag-content nil)
- (decf js2-ts-xml-open-tags-count)))
- (?{
- (js2-unget-char)
- (setq js2-ts-string (js2-get-string-from-buffer))
- (throw 'return js2-XML))
- ((?\' ?\")
- (js2-add-to-string c)
- (unless (js2-read-quoted-string c)
- (throw 'return js2-ERROR)))
- (?=
- (js2-add-to-string c)
- (setq js2-ts-is-xml-attribute t))
- ((? ?\t ?\r ?\n)
- (js2-add-to-string c))
- (t
- (js2-add-to-string c)
- (setq js2-ts-is-xml-attribute nil)))
- (when (and (not js2-ts-xml-is-tag-content)
- (zerop js2-ts-xml-open-tags-count))
- (setq js2-ts-string (js2-get-string-from-buffer))
- (throw 'return js2-XMLEND)))
- (t
- ;; else not tag content
- (case c
- (?<
- (js2-add-to-string c)
- (setq c (js2-peek-char))
- (case c
- (?!
- (setq c (js2-get-char)) ;; skip !
- (js2-add-to-string c)
- (setq c (js2-peek-char))
- (case c
- (?-
- (setq c (js2-get-char)) ;; skip -
- (js2-add-to-string c)
- (if (eq c ?-)
- (progn
- (js2-add-to-string c)
- (unless (js2-read-xml-comment)
- (throw 'return js2-ERROR)))
- (js2-xml-discard-string)
- (throw 'return js2-ERROR)))
- (?\[
- (setq c (js2-get-char)) ;; skip [
- (js2-add-to-string c)
- (if (and (= (js2-get-char) ?C)
- (= (js2-get-char) ?D)
- (= (js2-get-char) ?A)
- (= (js2-get-char) ?T)
- (= (js2-get-char) ?A)
- (= (js2-get-char) ?\[))
- (progn
- (js2-add-to-string ?C)
- (js2-add-to-string ?D)
- (js2-add-to-string ?A)
- (js2-add-to-string ?T)
- (js2-add-to-string ?A)
- (js2-add-to-string ?\[)
- (unless (js2-read-cdata)
- (throw 'return js2-ERROR)))
- (js2-xml-discard-string)
- (throw 'return js2-ERROR)))
- (t
- (unless (js2-read-entity)
- (throw 'return js2-ERROR)))))
- (??
- (setq c (js2-get-char)) ;; skip ?
- (js2-add-to-string c)
- (unless (js2-read-PI)
- (throw 'return js2-ERROR)))
- (?/
- ;; end tag
- (setq c (js2-get-char)) ;; skip /
- (js2-add-to-string c)
- (when (zerop js2-ts-xml-open-tags-count)
- (js2-xml-discard-string)
- (throw 'return js2-ERROR))
- (setq js2-ts-xml-is-tag-content t)
- (decf js2-ts-xml-open-tags-count))
- (t
- ;; start tag
- (setq js2-ts-xml-is-tag-content t)
- (incf js2-ts-xml-open-tags-count))))
- (?{
- (js2-unget-char)
- (setq js2-ts-string (js2-get-string-from-buffer))
- (throw 'return js2-XML))
- (t
- (js2-add-to-string c))))))))
- (setq js2-token-end js2-ts-cursor)
- result))
-
-(defun js2-read-quoted-string (quote)
- (let (c)
- (catch 'return
- (while (/= (setq c (js2-get-char)) js2-EOF_CHAR)
- (js2-add-to-string c)
- (if (eq c quote)
- (throw 'return t)))
- (js2-xml-discard-string) ;; throw away string in progress
- nil)))
-
-(defun js2-read-xml-comment ()
- (let ((c (js2-get-char)))
- (catch 'return
- (while (/= c js2-EOF_CHAR)
- (catch 'continue
- (js2-add-to-string c)
- (when (and (eq c ?-) (eq ?- (js2-peek-char)))
- (setq c (js2-get-char))
- (js2-add-to-string c)
- (if (eq (js2-peek-char) ?>)
- (progn
- (setq c (js2-get-char)) ;; skip >
- (js2-add-to-string c)
- (throw 'return t))
- (throw 'continue nil)))
- (setq c (js2-get-char))))
- (js2-xml-discard-string)
- nil)))
-
-(defun js2-read-cdata ()
- (let ((c (js2-get-char)))
- (catch 'return
- (while (/= c js2-EOF_CHAR)
- (catch 'continue
- (js2-add-to-string c)
- (when (and (eq c ?\]) (eq (js2-peek-char) ?\]))
- (setq c (js2-get-char))
- (js2-add-to-string c)
- (if (eq (js2-peek-char) ?>)
- (progn
- (setq c (js2-get-char)) ;; Skip >
- (js2-add-to-string c)
- (throw 'return t))
- (throw 'continue nil)))
- (setq c (js2-get-char))))
- (js2-xml-discard-string)
- nil)))
-
-(defun js2-read-entity ()
- (let ((decl-tags 1)
- c)
- (catch 'return
- (while (/= js2-EOF_CHAR (setq c (js2-get-char)))
- (js2-add-to-string c)
- (case c
- (?<
- (incf decl-tags))
- (?>
- (decf decl-tags)
- (if (zerop decl-tags)
- (throw 'return t)))))
- (js2-xml-discard-string)
- nil)))
-
-(defun js2-read-PI ()
- "Scan an XML processing instruction."
- (let (c)
- (catch 'return
- (while (/= js2-EOF_CHAR (setq c (js2-get-char)))
- (js2-add-to-string c)
- (when (and (eq c ??) (eq (js2-peek-char) ?>))
- (setq c (js2-get-char)) ;; Skip >
- (js2-add-to-string c)
- (throw 'return t)))
- (js2-xml-discard-string)
- nil)))
-
-(defun js2-scanner-get-line ()
- "Return the text of the current scan line."
- (buffer-substring (point-at-bol) (point-at-eol)))
-
-;;; Highlighting
-
-(defsubst js2-set-face (beg end face &optional record)
- "Fontify a region. If RECORD is non-nil, record for later."
- (when (plusp js2-highlight-level)
- (setq beg (min (point-max) beg)
- beg (max (point-min) beg)
- end (min (point-max) end)
- end (max (point-min) end))
- (if record
- (push (list beg end face) js2-mode-fontifications)
- (put-text-property beg end 'face face))))
-
-(defsubst js2-set-kid-face (pos kid len face)
- "Set-face on a child node.
-POS is absolute buffer position of parent.
-KID is the child node.
-LEN is the length to fontify.
-FACE is the face to fontify with."
- (js2-set-face (+ pos (js2-node-pos kid))
- (+ pos (js2-node-pos kid) (js2-node-len kid))
- face))
-
-(defsubst js2-fontify-kwd (start length)
- (js2-set-face start (+ start length) 'font-lock-keyword-face))
-
-(defsubst js2-clear-face (beg end)
- (remove-text-properties beg end '(face nil
- help-echo nil
- point-entered nil
- c-in-sws nil)))
-
-(defsubst js2-record-text-property (beg end prop value)
- "Record a text property to set when parsing finishes."
- (push (list beg end prop value) js2-mode-deferred-properties))
-
-(defconst js2-ecma-global-props
- (concat "^"
- (regexp-opt
- '("Infinity" "NaN" "undefined" "arguments") t)
- "$")
- "Value properties of the Ecma-262 Global Object.
-Shown at or above `js2-highlight-level' 2.")
-
-;; might want to add the name "arguments" to this list?
-(defconst js2-ecma-object-props
- (concat "^"
- (regexp-opt
- '("prototype" "__proto__" "__parent__") t)
- "$")
- "Value properties of the Ecma-262 Object constructor.
-Shown at or above `js2-highlight-level' 2.")
-
-(defconst js2-ecma-global-funcs
- (concat
- "^"
- (regexp-opt
- '("decodeURI" "decodeURIComponent" "encodeURI" "encodeURIComponent"
- "eval" "isFinite" "isNaN" "parseFloat" "parseInt") t)
- "$")
- "Function properties of the Ecma-262 Global object.
-Shown at or above `js2-highlight-level' 2.")
-
-(defconst js2-ecma-number-props
- (concat "^"
- (regexp-opt '("MAX_VALUE" "MIN_VALUE" "NaN"
- "NEGATIVE_INFINITY"
- "POSITIVE_INFINITY") t)
- "$")
- "Properties of the Ecma-262 Number constructor.
-Shown at or above `js2-highlight-level' 2.")
-
-(defconst js2-ecma-date-props "^\\(parse\\|UTC\\)$"
- "Properties of the Ecma-262 Date constructor.
-Shown at or above `js2-highlight-level' 2.")
-
-(defconst js2-ecma-math-props
- (concat "^"
- (regexp-opt
- '("E" "LN10" "LN2" "LOG2E" "LOG10E" "PI" "SQRT1_2" "SQRT2")
- t)
- "$")
- "Properties of the Ecma-262 Math object.
-Shown at or above `js2-highlight-level' 2.")
-
-(defconst js2-ecma-math-funcs
- (concat "^"
- (regexp-opt
- '("abs" "acos" "asin" "atan" "atan2" "ceil" "cos" "exp" "floor"
- "log" "max" "min" "pow" "random" "round" "sin" "sqrt" "tan") t)
- "$")
- "Function properties of the Ecma-262 Math object.
-Shown at or above `js2-highlight-level' 2.")
-
-(defconst js2-ecma-function-props
- (concat
- "^"
- (regexp-opt
- '(;; properties of the Object prototype object
- "hasOwnProperty" "isPrototypeOf" "propertyIsEnumerable"
- "toLocaleString" "toString" "valueOf"
- ;; properties of the Function prototype object
- "apply" "call"
- ;; properties of the Array prototype object
- "concat" "join" "pop" "push" "reverse" "shift" "slice" "sort"
- "splice" "unshift"
- ;; properties of the String prototype object
- "charAt" "charCodeAt" "fromCharCode" "indexOf" "lastIndexOf"
- "localeCompare" "match" "replace" "search" "split" "substring"
- "toLocaleLowerCase" "toLocaleUpperCase" "toLowerCase"
- "toUpperCase"
- ;; properties of the Number prototype object
- "toExponential" "toFixed" "toPrecision"
- ;; properties of the Date prototype object
- "getDate" "getDay" "getFullYear" "getHours" "getMilliseconds"
- "getMinutes" "getMonth" "getSeconds" "getTime"
- "getTimezoneOffset" "getUTCDate" "getUTCDay" "getUTCFullYear"
- "getUTCHours" "getUTCMilliseconds" "getUTCMinutes" "getUTCMonth"
- "getUTCSeconds" "setDate" "setFullYear" "setHours"
- "setMilliseconds" "setMinutes" "setMonth" "setSeconds" "setTime"
- "setUTCDate" "setUTCFullYear" "setUTCHours" "setUTCMilliseconds"
- "setUTCMinutes" "setUTCMonth" "setUTCSeconds" "toDateString"
- "toLocaleDateString" "toLocaleString" "toLocaleTimeString"
- "toTimeString" "toUTCString"
- ;; properties of the RegExp prototype object
- "exec" "test"
- ;; SpiderMonkey/Rhino extensions, versions 1.5+
- "toSource" "__defineGetter__" "__defineSetter__"
- "__lookupGetter__" "__lookupSetter__" "__noSuchMethod__"
- "every" "filter" "forEach" "lastIndexOf" "map" "some")
- t)
- "$")
- "Built-in functions defined by Ecma-262 and SpiderMonkey extensions.
-Shown at or above `js2-highlight-level' 3.")
-
-(defsubst js2-parse-highlight-prop-get (parent target prop call-p)
- (let ((target-name (and target
- (js2-name-node-p target)
- (js2-name-node-name target)))
- (prop-name (if prop (js2-name-node-name prop)))
- (level1 (>= js2-highlight-level 1))
- (level2 (>= js2-highlight-level 2))
- (level3 (>= js2-highlight-level 3))
- pos
- face)
- (when level2
- (if call-p
- (cond
- ((and target prop)
- (cond
- ((and level3 (string-match js2-ecma-function-props prop-name))
- (setq face 'font-lock-builtin-face))
- ((and target-name prop)
- (cond
- ((string= target-name "Date")
- (if (string-match js2-ecma-date-props prop-name)
- (setq face 'font-lock-builtin-face)))
- ((string= target-name "Math")
- (if (string-match js2-ecma-math-funcs prop-name)
- (setq face 'font-lock-builtin-face)))))))
- (prop
- (if (string-match js2-ecma-global-funcs prop-name)
- (setq face 'font-lock-builtin-face))))
- (cond
- ((and target prop)
- (cond
- ((string= target-name "Number")
- (if (string-match js2-ecma-number-props prop-name)
- (setq face 'font-lock-constant-face)))
- ((string= target-name "Math")
- (if (string-match js2-ecma-math-props prop-name)
- (setq face 'font-lock-constant-face)))))
- (prop
- (if (string-match js2-ecma-object-props prop-name)
- (setq face 'font-lock-constant-face)))))
- (when face
- (js2-set-face (setq pos (+ (js2-node-pos parent) ; absolute
- (js2-node-pos prop))) ; relative
- (+ pos (js2-node-len prop))
- face)))))
-
-(defun js2-parse-highlight-member-expr-node (node)
- "Perform syntax highlighting of EcmaScript built-in properties.
-The variable `js2-highlight-level' governs this highighting."
- (let (face target prop name pos end parent call-p callee)
- (cond
- ;; case 1: simple name, e.g. foo
- ((js2-name-node-p node)
- (setq name (js2-name-node-name node))
- ;; possible for name to be nil in rare cases - saw it when
- ;; running js2-mode on an elisp buffer. Might as well try to
- ;; make it so js2-mode never barfs.
- (when name
- (setq face (if (string-match js2-ecma-global-props name)
- 'font-lock-constant-face))
- (when face
- (setq pos (js2-node-pos node)
- end (+ pos (js2-node-len node)))
- (js2-set-face pos end face))))
- ;; case 2: property access or function call
- ((or (js2-prop-get-node-p node)
- ;; highlight function call if expr is a prop-get node
- ;; or a plain name (i.e. unqualified function call)
- (and (setq call-p (js2-call-node-p node))
- (setq callee (js2-call-node-target node)) ; separate setq!
- (or (js2-prop-get-node-p callee)
- (js2-name-node-p callee))))
- (setq parent node
- node (if call-p callee node))
- (if (and call-p (js2-name-node-p callee))
- (setq prop callee)
- (setq target (js2-prop-get-node-left node)
- prop (js2-prop-get-node-right node)))
- (cond
- ((js2-name-node-p target)
- (if (js2-name-node-p prop)
- ;; case 2a: simple target, simple prop name, e.g. foo.bar
- (js2-parse-highlight-prop-get parent target prop call-p)
- ;; case 2b: simple target, complex name, e.g. foo.x[y]
- (js2-parse-highlight-prop-get parent target nil call-p)))
- ((js2-name-node-p prop)
- ;; case 2c: complex target, simple name, e.g. x[y].bar
- (js2-parse-highlight-prop-get parent target prop call-p)))))))
-
-(defun js2-parse-highlight-member-expr-fn-name (expr)
- "Highlight the `baz' in function foo.bar.baz(args) {...}.
-This is experimental Rhino syntax. EXPR is the foo.bar.baz member expr.
-We currently only handle the case where the last component is a prop-get
-of a simple name. Called before EXPR has a parent node."
- (let (pos
- (name (and (js2-prop-get-node-p expr)
- (js2-prop-get-node-right expr))))
- (when (js2-name-node-p name)
- (js2-set-face (setq pos (+ (js2-node-pos expr) ; parent is absolute
- (js2-node-pos name)))
- (+ pos (js2-node-len name))
- 'font-lock-function-name-face
- 'record))))
-
-;; source: http://jsdoc.sourceforge.net/
-;; Note - this syntax is for Google's enhanced jsdoc parser that
-;; allows type specifications, and needs work before entering the wild.
-
-(defconst js2-jsdoc-param-tag-regexp
- (concat "^\\s-*\\*+\\s-*\\(@"
- "\\(?:param\\|argument\\)"
- "\\)"
- "\\s-*\\({[^}]+}\\)?" ; optional type
- "\\s-*\\([a-zA-Z0-9_$]+\\)?" ; name
- "\\>")
- "Matches jsdoc tags with optional type and optional param name.")
-
-(defconst js2-jsdoc-typed-tag-regexp
- (concat "^\\s-*\\*+\\s-*\\(@\\(?:"
- (regexp-opt
- '("enum"
- "extends"
- "field"
- "id"
- "implements"
- "lends"
- "mods"
- "requires"
- "return"
- "returns"
- "throw"
- "throws"))
- "\\)\\)\\s-*\\({[^}]+}\\)?")
- "Matches jsdoc tags with optional type.")
-
-(defconst js2-jsdoc-arg-tag-regexp
- (concat "^\\s-*\\*+\\s-*\\(@\\(?:"
- (regexp-opt
- '("alias"
- "augments"
- "borrows"
- "bug"
- "base"
- "config"
- "default"
- "define"
- "exception"
- "function"
- "member"
- "memberOf"
- "name"
- "namespace"
- "property"
- "since"
- "suppress"
- "this"
- "throws"
- "type"
- "version"))
- "\\)\\)\\s-+\\([^ \t]+\\)")
- "Matches jsdoc tags with a single argument.")
-
-(defconst js2-jsdoc-empty-tag-regexp
- (concat "^\\s-*\\*+\\s-*\\(@\\(?:"
- (regexp-opt
- '("addon"
- "author"
- "class"
- "const"
- "constant"
- "constructor"
- "constructs"
- "deprecated"
- "desc"
- "description"
- "event"
- "example"
- "exec"
- "export"
- "fileoverview"
- "final"
- "function"
- "hidden"
- "ignore"
- "implicitCast"
- "inheritDoc"
- "inner"
- "interface"
- "license"
- "noalias"
- "noshadow"
- "notypecheck"
- "override"
- "owner"
- "preserve"
- "preserveTry"
- "private"
- "protected"
- "public"
- "static"
- "supported"
- ))
- "\\)\\)\\s-*")
- "Matches empty jsdoc tags.")
-
-(defconst js2-jsdoc-link-tag-regexp
- "{\\(@\\(?:link\\|code\\)\\)\\s-+\\([^#}\n]+\\)\\(#.+\\)?}"
- "Matches a jsdoc link or code tag.")
-
-(defconst js2-jsdoc-see-tag-regexp
- "^\\s-*\\*+\\s-*\\(@see\\)\\s-+\\([^#}\n]+\\)\\(#.+\\)?"
- "Matches a jsdoc @see tag.")
-
-(defconst js2-jsdoc-html-tag-regexp
- "\\(</?\\)\\([a-zA-Z]+\\)\\s-*\\(/?>\\)"
- "Matches a simple (no attributes) html start- or end-tag.")
-
-(defsubst js2-jsdoc-highlight-helper ()
- (js2-set-face (match-beginning 1)
- (match-end 1)
- 'js2-jsdoc-tag)
- (if (match-beginning 2)
- (if (save-excursion
- (goto-char (match-beginning 2))
- (= (char-after) ?{))
- (js2-set-face (1+ (match-beginning 2))
- (1- (match-end 2))
- 'js2-jsdoc-type)
- (js2-set-face (match-beginning 2)
- (match-end 2)
- 'js2-jsdoc-value)))
- (if (match-beginning 3)
- (js2-set-face (match-beginning 3)
- (match-end 3)
- 'js2-jsdoc-value)))
-
-(defun js2-highlight-jsdoc (ast)
- "Highlight doc comment tags."
- (let ((comments (js2-ast-root-comments ast))
- beg end)
- (save-excursion
- (dolist (node comments)
- (when (eq (js2-comment-node-format node) 'jsdoc)
- (setq beg (js2-node-abs-pos node)
- end (+ beg (js2-node-len node)))
- (save-restriction
- (narrow-to-region beg end)
- (dolist (re (list js2-jsdoc-param-tag-regexp
- js2-jsdoc-typed-tag-regexp
- js2-jsdoc-arg-tag-regexp
- js2-jsdoc-link-tag-regexp
- js2-jsdoc-see-tag-regexp
- js2-jsdoc-empty-tag-regexp))
- (goto-char beg)
- (while (re-search-forward re nil t)
- (js2-jsdoc-highlight-helper)))
- ;; simple highlighting for html tags
- (goto-char beg)
- (while (re-search-forward js2-jsdoc-html-tag-regexp nil t)
- (js2-set-face (match-beginning 1)
- (match-end 1)
- 'js2-jsdoc-html-tag-delimiter)
- (js2-set-face (match-beginning 2)
- (match-end 2)
- 'js2-jsdoc-html-tag-name)
- (js2-set-face (match-beginning 3)
- (match-end 3)
- 'js2-jsdoc-html-tag-delimiter))))))))
-
-(defun js2-highlight-assign-targets (node left right)
- "Highlight function properties and external variables."
- (let (leftpos end name)
- ;; highlight vars and props assigned function values
- (when (js2-function-node-p right)
- (cond
- ;; var foo = function() {...}
- ((js2-name-node-p left)
- (setq name left))
- ;; foo.bar.baz = function() {...}
- ((and (js2-prop-get-node-p left)
- (js2-name-node-p (js2-prop-get-node-right left)))
- (setq name (js2-prop-get-node-right left))))
- (when name
- (js2-set-face (setq leftpos (js2-node-abs-pos name))
- (+ leftpos (js2-node-len name))
- 'font-lock-function-name-face
- 'record)))
- ;; save variable assignments so we can check for undeclared later
- ;; (can't do it here since var decls can come at end of script)
- (when (and js2-highlight-external-variables
- (setq name (js2-member-expr-leftmost-name left)))
- (push (list name js2-current-scope
- (setq leftpos (js2-node-abs-pos name))
- (setq end (+ leftpos (js2-node-len name))))
- js2-recorded-assignments))))
-
-(defun js2-highlight-undeclared-vars ()
- "After entire parse is finished, look for undeclared variable assignments.
-We have to wait until entire buffer is parsed, since JavaScript permits var
-decls to occur after they're used.
-
-If any undeclared var name is in `js2-externs' or `js2-additional-externs',
-it is considered declared."
- (let (name)
- (dolist (entry js2-recorded-assignments)
- (destructuring-bind (name-node scope pos end) entry
- (setq name (js2-name-node-name name-node))
- (unless (or (member name js2-global-externs)
- (member name js2-default-externs)
- (member name js2-additional-externs)
- (js2-get-defining-scope scope name))
- (js2-set-face pos end 'js2-external-variable 'record)
- (js2-record-text-property pos end 'help-echo "Undeclared variable")
- (js2-record-text-property pos end 'point-entered #'js2-echo-help))))
- (setq js2-recorded-assignments nil)))
-
-;;; IMenu support
-
-;; We currently only support imenu, but eventually should support speedbar and
-;; possibly other browsing mechanisms.
-
-;; The basic strategy is to identify function assignment targets of the form
-;; `foo.bar.baz', convert them to (list foo bar baz <position>), and push the
-;; list into `js2-imenu-recorder'. The lists are merged into a trie-like tree
-;; for imenu after parsing is finished.
-
-;; A `foo.bar.baz' assignment target may be expressed in many ways in
-;; JavaScript, and the general problem is undecidable. However, several forms
-;; are readily recognizable at parse-time; the forms we attempt to recognize
-;; include:
-
-;; function foo() -- function declaration
-;; foo = function() -- function expression assigned to variable
-;; foo.bar.baz = function() -- function expr assigned to nested property-get
-;; foo = {bar: function()} -- fun prop in object literal assigned to var
-;; foo = {bar: {baz: function()}} -- inside nested object literal
-;; foo.bar = {baz: function()}} -- obj lit assigned to nested prop get
-;; a.b = {c: {d: function()}} -- nested obj lit assigned to nested prop get
-;; foo = {get bar() {...}} -- getter/setter in obj literal
-;; function foo() {function bar() {...}} -- nested function
-;; foo['a'] = function() -- fun expr assigned to deterministic element-get
-
-;; This list boils down to a few forms that can be combined recursively.
-;; Top-level named function declarations include both the left-hand (name)
-;; and the right-hand (function value) expressions needed to produce an imenu
-;; entry. The other "right-hand" forms we need to look for are:
-;; - functions declared as props/getters/setters in object literals
-;; - nested named function declarations
-;; The "left-hand" expressions that functions can be assigned to include:
-;; - local/global variables
-;; - nested property-get expressions like a.b.c.d
-;; - element gets like foo[10] or foo['bar'] where the index
-;; expression can be trivially converted to a property name. They
-;; effectively then become property gets.
-
-;; All the different definition types are canonicalized into the form
-;; foo.bar.baz = position-of-function-keyword
-
-;; We need to build a trie-like structure for imenu. As an example,
-;; consider the following JavaScript code:
-
-;; a = function() {...} // function at position 5
-;; b = function() {...} // function at position 25
-;; foo = function() {...} // function at position 100
-;; foo.bar = function() {...} // function at position 200
-;; foo.bar.baz = function() {...} // function at position 300
-;; foo.bar.zab = function() {...} // function at position 400
-
-;; During parsing we accumulate an entry for each definition in
-;; the variable `js2-imenu-recorder', like so:
-
-;; '((a 5)
-;; (b 25)
-;; (foo 100)
-;; (foo bar 200)
-;; (foo bar baz 300)
-;; (foo bar zab 400))
-
-;; After parsing these entries are merged into this alist-trie:
-
-;; '((a . 1)
-;; (b . 2)
-;; (foo (<definition> . 3)
-;; (bar (<definition> . 6)
-;; (baz . 100)
-;; (zab . 200))))
-
-;; Note the wacky need for a <definition> name. The token can be anything
-;; that isn't a valid JavaScript identifier, because you might make foo
-;; a function and then start setting properties on it that are also functions.
-
-(defsubst js2-prop-node-name (node)
- "Return the name of a node that may be a property-get/property-name.
-If NODE is not a valid name-node, string-node or integral number-node,
-returns nil. Otherwise returns the string name/value of the node."
- (cond
- ((js2-name-node-p node)
- (js2-name-node-name node))
- ((js2-string-node-p node)
- (js2-string-node-value node))
- ((and (js2-number-node-p node)
- (string-match "^[0-9]+$" (js2-number-node-value node)))
- (js2-number-node-value node))
- ((js2-this-node-p node)
- "this")))
-
-(defsubst js2-node-qname-component (node)
- "Test function: return the name of this node, if it contributes to a qname.
-Returns nil if the node doesn't contribute."
- (copy-sequence
- (or (js2-prop-node-name node)
- (if (and (js2-function-node-p node)
- (js2-function-node-name node))
- (js2-name-node-name (js2-function-node-name node))))))
-
-(defsubst js2-record-function-qname (fn-node qname)
- "Associate FN-NODE with its QNAME for later lookup.
-This is used in postprocessing the chain list. When we find a chain
-whose first element is a js2-THIS keyword node, we look up the parent
-function and see (using this map) whether it is the tail of a chain.
-If so, we replace the this-node with a copy of the parent's qname."
- (unless js2-imenu-function-map
- (setq js2-imenu-function-map (make-hash-table :test 'eq)))
- (puthash fn-node qname js2-imenu-function-map))
-
-(defun js2-record-imenu-functions (node &optional var)
- "Record function definitions for imenu.
-NODE is a function node or an object literal.
-VAR, if non-nil, is the expression that NODE is being assigned to."
- (when js2-parse-ide-mode
- (let ((fun-p (js2-function-node-p node))
- qname left fname-node pos)
- (cond
- ;; non-anonymous function declaration?
- ((and fun-p
- (not var)
- (setq fname-node (js2-function-node-name node)))
- (push (setq qname (list fname-node (js2-node-pos node)))
- js2-imenu-recorder)
- (js2-record-function-qname node qname))
- ;; for remaining forms, compute left-side tree branch first
- ((and var (setq qname (js2-compute-nested-prop-get var)))
- (cond
- ;; foo.bar.baz = function
- (fun-p
- (push (nconc qname (list (js2-node-pos node)))
- js2-imenu-recorder)
- (js2-record-function-qname node qname))
- ;; foo.bar.baz = object-literal
- ;; look for nested functions: {a: {b: function() {...} }}
- ((js2-object-node-p node)
- (js2-record-object-literal node qname))))))))
-
-(defun js2-compute-nested-prop-get (node)
- "If NODE is of form foo.bar.baz, return component nodes as a list.
-Otherwise returns nil. Element-gets can be treated as property-gets
-if the index expression is a name, a string, or a positive integer."
- (let (left right head)
- (cond
- ((or (js2-name-node-p node)
- (js2-this-node-p node))
- (list node))
- ;; foo.bar.baz is parenthesized as (foo.bar).baz => right operand is a
leaf
- ((js2-prop-get-node-p node) ; includes elem-get nodes
- (setq left (js2-prop-get-node-left node)
- right (js2-prop-get-node-right node))
- (if (and (or (js2-prop-get-node-p left) ; left == foo.bar
- (js2-name-node-p left)
- (js2-this-node-p left)) ; or left == foo
- (or (js2-name-node-p right) ; .bar
- (js2-string-node-p right) ; ['bar']
- (and (js2-number-node-p right) ; [10]
- (string-match "^[0-9]+$"
- (js2-number-node-value right)))))
- (if (setq head (js2-compute-nested-prop-get left))
- (nconc head (list right))))))))
-
-(defun js2-record-object-literal (node qname)
- "Recursively process an object literal looking for functions.
-NODE is an object literal that is the right-hand child of an assignment
-expression. QNAME is a list of nodes representing the assignment target,
-e.g. for foo.bar.baz = {...}, QNAME is (foo-node bar-node baz-node).
-We do a depth-first traversal of NODE. Any functions we find are prefixed
-with QNAME plus the property name of the function and appended to the
-variable `js2-imenu-recorder'."
- ;; Elements are relative to parent position, which is still absolute,
- ;; since the parser passes the assignment target and value expressions
- ;; to us before they are added as children of the assignment node.
- (let ((pos (js2-node-pos node))
- left right)
- (dolist (e (js2-object-node-elems node)) ; e is a `js2-object-prop-node'
- (setq left (js2-infix-node-left e))
- (cond
- ;; foo: function() {...}
- ((js2-function-node-p (setq right (js2-infix-node-right e)))
- (when (js2-prop-node-name left)
- ;; As a policy decision, we record the position of the property,
- ;; not the position of the `function' keyword, since the property
- ;; is effectively the name of the function.
- (push (append qname (list left) (list (+ pos (js2-node-pos e))))
- js2-imenu-recorder)
- (js2-record-function-qname right qname)))
- ;; foo: {object-literal} -- add foo to qname and recurse
- ((js2-object-node-p right)
- (js2-record-object-literal right
- (append qname (list (js2-infix-node-left
e)))))))))
-
-(defsubst js2-node-top-level-decl-p (node)
- "Return t if NODE's name is defined in the top-level scope.
-Also returns t if NODE's name is not defined in any scope, since it implies
-that it's an external variable, which must also be in the top-level scope."
- (let* ((name (js2-prop-node-name node))
- (this-scope (js2-node-get-enclosing-scope node))
- defining-scope)
- (cond
- ((js2-this-node-p node)
- nil)
- ((null this-scope)
- t)
- ((setq defining-scope (js2-get-defining-scope this-scope name))
- (js2-ast-root-p defining-scope))
- (t t))))
-
-(defun js2-browse-postprocess-chains (chains)
- "Modify function-declaration name chains after parsing finishes.
-Some of the information is only available after the parse tree is complete.
-For instance, following a 'this' reference requires a parent function node."
- (let (result head fn parent-chain p elem)
- (dolist (chain chains)
- ;; examine the head of each node to get its defining scope
- (setq head (car chain))
- (cond
- ;; if top-level/external, keep as-is
- ((js2-node-top-level-decl-p head)
- (push chain result))
- ;; check for a this-reference
- ((eq (js2-node-type head) js2-THIS)
- (setq fn (js2-node-parent-script-or-fn head))
- ;; if there is no parent function, or if the parent function
- ;; is nested, discard the head node and keep the rest of the chain.
- (if (or (null fn) (js2-nested-function-p fn))
- (push (cdr chain) result)
- ;; else look up parent in function-map. If not found, discard chain.
- (when (setq parent-chain (and js2-imenu-function-map
- (gethash fn js2-imenu-function-map)))
- ;; else discard head node and prefix parent fn qname, which is
- ;; the parent-chain sans tail, to this chain.
- (push (append (butlast parent-chain) (cdr chain)) result))))))
- ;; finally replace each node in each chain with its name.
- (dolist (chain result)
- (setq p chain)
- (while p
- (if (js2-node-p (setq elem (car p)))
- (setcar p (js2-node-qname-component elem)))
- (setq p (cdr p))))
- result))
-
-;; Merge name chains into a trie-like tree structure of nested lists.
-;; To simplify construction of the trie, we first build it out using the rule
-;; that the trie consists of lists of pairs. Each pair is a 2-element array:
-;; [key, num-or-list]. The second element can be a number; if so, this key
-;; is a leaf-node with only one value. (I.e. there is only one declaration
-;; associated with the key at this level.) Otherwise the second element is
-;; a list of pairs, with the rule applied recursively. This symmetry permits
-;; a simple recursive formulation.
-;;
-;; js2-mode is building the data structure for imenu. The imenu documentation
-;; claims that it's the structure above, but in practice it wants the children
-;; at the same list level as the key for that level, which is how I've drawn
-;; the "Expected final result" above. We'll postprocess the trie to remove the
-;; list wrapper around the children at each level.
-;;
-;; A completed nested imenu-alist entry looks like this:
-;; '(("foo"
-;; ("<definition>" . 7)
-;; ("bar"
-;; ("a" . 40)
-;; ("b" . 60))))
-;;
-;; In particular, the documentation for `imenu--index-alist' says that
-;; a nested sub-alist element looks like (INDEX-NAME SUB-ALIST).
-;; The sub-alist entries immediately follow INDEX-NAME, the head of the list.
-
-(defsubst js2-treeify (lst)
- "Convert (a b c d) to (a ((b ((c d)))))"
- (if (null (cddr lst)) ; list length <= 2
- lst
- (list (car lst) (list (js2-treeify (cdr lst))))))
-
-(defun js2-build-alist-trie (chains trie)
- "Merge declaration name chains into a trie-like alist structure for imenu.
-CHAINS is the qname chain list produced during parsing. TRIE is a
-list of elements built up so far."
- (let (head tail pos branch kids)
- (dolist (chain chains)
- (setq head (car chain)
- tail (cdr chain)
- pos (if (numberp (car tail)) (car tail))
- branch (js2-find-if (lambda (n)
- (string= (car n) head))
- trie)
- kids (second branch))
- (cond
- ;; case 1: this key isn't in the trie yet
- ((null branch)
- (if trie
- (setcdr (last trie) (list (js2-treeify chain)))
- (setq trie (list (js2-treeify chain)))))
- ;; case 2: key is present with a single number entry: replace w/ list
- ;; ("a1" 10) + ("a1" 20) => ("a1" (("<definition>" 10)
- ;; ("<definition>" 20)))
- ((numberp kids)
- (setcar (cdr branch)
- (list (list "<definition-1>" kids)
- (if pos
- (list "<definition-2>" pos)
- (js2-treeify tail)))))
- ;; case 3: key is there (with kids), and we're a number entry
- (pos
- (setcdr (last kids)
- (list
- (list (format "<definition-%d>"
- (1+ (loop for kid in kids
- count (eq ?< (aref (car kid) 0)))))
- pos))))
-
- ;; case 4: key is there with kids, need to merge in our chain
- (t
- (js2-build-alist-trie (list tail) kids))))
- trie))
-
-(defun js2-flatten-trie (trie)
- "Convert TRIE to imenu-format.
-Recurses through nodes, and for each one whose second element is a list,
-appends the list's flattened elements to the current element. Also
-changes the tails into conses. For instance, this pre-flattened trie
-
-'(a ((b 20)
- (c ((d 30)
- (e 40)))))
-
-becomes
-
-'(a (b . 20)
- (c (d . 30)
- (e . 40)))
-
-Note that the root of the trie has no key, just a list of chains.
-This is also true for the value of any key with multiple children,
-e.g. key 'c' in the example above."
- (cond
- ((listp (car trie))
- (mapcar #'js2-flatten-trie trie))
- (t
- (if (numberp (second trie))
- (cons (car trie) (second trie))
- ;; else pop list and append its kids
- (apply #'append (list (car trie)) (js2-flatten-trie (cdr trie)))))))
-
-(defun js2-build-imenu-index ()
- "Turn `js2-imenu-recorder' into an imenu data structure."
- (unless (eq js2-imenu-recorder 'empty)
- (let* ((chains (js2-browse-postprocess-chains js2-imenu-recorder))
- (result (js2-build-alist-trie chains nil)))
- (js2-flatten-trie result))))
-
-(defun js2-test-print-chains (chains)
- "Print a list of qname chains.
-Each element of CHAINS is a list of the form (NODE [NODE *] pos);
-i.e. one or more nodes, and an integer position as the list tail."
- (mapconcat (lambda (chain)
- (concat "("
- (mapconcat (lambda (elem)
- (if (js2-node-p elem)
- (or (js2-node-qname-component elem)
- "nil")
- (number-to-string elem)))
- chain
- " ")
- ")"))
- chains
- "\n"))
-
-;;; Parser
-
-(defconst js2-version "1.8.0"
- "Version of JavaScript supported, plus minor js2 version.")
-
-(defmacro js2-record-face (face)
- "Record a style run of FACE for the current token."
- `(js2-set-face js2-token-beg js2-token-end ,face 'record))
-
-(defsubst js2-node-end (n)
- "Computes the absolute end of node N.
-Use with caution! Assumes `js2-node-pos' is -absolute-, which
-is only true until the node is added to its parent; i.e., while parsing."
- (+ (js2-node-pos n)
- (js2-node-len n)))
-
-(defsubst js2-record-comment ()
- "Record a comment in `js2-scanned-comments'."
- (push (make-js2-comment-node :len (- js2-token-end js2-token-beg)
- :format js2-ts-comment-type)
- js2-scanned-comments)
- (when js2-parse-ide-mode
- (js2-record-face (if (eq js2-ts-comment-type 'jsdoc)
- 'font-lock-doc-face
- 'font-lock-comment-face))
- (when (memq js2-ts-comment-type '(html preprocessor))
- ;; Tell cc-engine the bounds of the comment.
- (put-text-property js2-token-beg (1- js2-token-end) 'c-in-sws t))))
-
-;; This function is called depressingly often, so it should be fast.
-;; Most of the time it's looking at the same token it peeked before.
-(defsubst js2-peek-token ()
- "Returns the next token without consuming it.
-If previous token was consumed, calls scanner to get new token.
-If previous token was -not- consumed, returns it (idempotent).
-
-This function will not return a newline (js2-EOL) - instead, it
-gobbles newlines until it finds a non-newline token, and flags
-that token as appearing just after a newline.
-
-This function will also not return a js2-COMMENT. Instead, it
-records comments found in `js2-scanned-comments'. If the token
-returned by this function immediately follows a jsdoc comment,
-the token is flagged as such.
-
-Note that this function always returned the un-flagged token!
-The flags, if any, are saved in `js2-current-flagged-token'."
- (if (/= js2-current-flagged-token js2-EOF) ; last token not consumed
- js2-current-token ; most common case - return already-peeked token
- (let ((tt (js2-get-token)) ; call scanner
- saw-eol
- face)
- ;; process comments and whitespace
- (while (or (= tt js2-EOL)
- (= tt js2-COMMENT))
- (if (= tt js2-EOL)
- (setq saw-eol t)
- (setq saw-eol nil)
- (if js2-record-comments
- (js2-record-comment)))
- (setq tt (js2-get-token))) ; call scanner
- (setq js2-current-token tt
- js2-current-flagged-token (if saw-eol
- (logior tt js2-ti-after-eol)
- tt))
- ;; perform lexical fontification as soon as token is scanned
- (when js2-parse-ide-mode
- (cond
- ((minusp tt)
- (js2-record-face 'js2-error))
- ((setq face (aref js2-kwd-tokens tt))
- (js2-record-face face))
- ((and (= tt js2-NAME)
- (equal js2-ts-string "undefined"))
- (js2-record-face 'font-lock-constant-face))))
- tt))) ; return unflagged token
-
-(defsubst js2-peek-flagged-token ()
- "Returns the current token along with any flags set for it."
- (js2-peek-token)
- js2-current-flagged-token)
-
-(defsubst js2-consume-token ()
- (setq js2-current-flagged-token js2-EOF))
-
-(defsubst js2-next-token ()
- (prog1
- (js2-peek-token)
- (js2-consume-token)))
-
-(defsubst js2-next-flagged-token ()
- (js2-peek-token)
- (prog1 js2-current-flagged-token
- (js2-consume-token)))
-
-(defsubst js2-match-token (match)
- "Consume and return t if next token matches MATCH, a bytecode.
-Returns nil and consumes nothing if MATCH is not the next token."
- (if (/= (js2-peek-token) match)
- nil
- (js2-consume-token)
- t))
-
-(defsubst js2-valid-prop-name-token (tt)
- (or (= tt js2-NAME)
- (and js2-allow-keywords-as-property-names
- (plusp tt)
- (aref js2-kwd-tokens tt))))
-
-(defsubst js2-match-prop-name ()
- "Consume token and return t if next token is a valid property name.
-It's valid if it's a js2-NAME, or `js2-allow-keywords-as-property-names'
-is non-nil and it's a keyword token."
- (if (js2-valid-prop-name-token (js2-peek-token))
- (progn
- (js2-consume-token)
- t)
- nil))
-
-(defsubst js2-must-match-prop-name (msg-id &optional pos len)
- (if (js2-match-prop-name)
- t
- (js2-report-error msg-id nil pos len)
- nil))
-
-(defsubst js2-peek-token-or-eol ()
- "Return js2-EOL if the current token immediately follows a newline.
-Else returns the current token. Used in situations where we don't
-consider certain token types valid if they are preceded by a newline.
-One example is the postfix ++ or -- operator, which has to be on the
-same line as its operand."
- (let ((tt (js2-peek-token)))
- ;; Check for last peeked token flags
- (if (js2-flag-set-p js2-current-flagged-token js2-ti-after-eol)
- js2-EOL
- tt)))
-
-(defsubst js2-set-check-for-label ()
- (assert (= (logand js2-current-flagged-token js2-clear-ti-mask) js2-NAME))
- (js2-set-flag js2-current-flagged-token js2-ti-check-label))
-
-(defsubst js2-must-match (token msg-id &optional pos len)
- "Match next token to token code TOKEN, or record a syntax error.
-MSG-ID is the error message to report if the match fails.
-Returns t on match, nil if no match."
- (if (js2-match-token token)
- t
- (js2-report-error msg-id nil pos len)
- nil))
-
-(defsubst js2-inside-function ()
- (plusp js2-nesting-of-function))
-
-(defsubst js2-set-requires-activation ()
- (if (js2-function-node-p js2-current-script-or-fn)
- (setf (js2-function-node-needs-activation js2-current-script-or-fn) t)))
-
-(defsubst js2-check-activation-name (name token)
- (when (js2-inside-function)
- ;; skip language-version 1.2 check from Rhino
- (if (or (string= "arguments" name)
- (and js2-compiler-activation-names ; only used in codegen
- (gethash name js2-compiler-activation-names)))
- (js2-set-requires-activation))))
-
-(defsubst js2-set-is-generator ()
- (if (js2-function-node-p js2-current-script-or-fn)
- (setf (js2-function-node-is-generator js2-current-script-or-fn) t)))
-
-(defsubst js2-must-have-xml ()
- (unless js2-compiler-xml-available
- (js2-report-error "msg.XML.not.available")))
-
-(defsubst js2-push-scope (scope)
- "Push SCOPE, a `js2-scope', onto the lexical scope chain."
- (assert (js2-scope-p scope))
- (assert (null (js2-scope-parent-scope scope)))
- (assert (not (eq js2-current-scope scope)))
- (setf (js2-scope-parent-scope scope) js2-current-scope
- js2-current-scope scope))
-
-(defsubst js2-pop-scope ()
- (setq js2-current-scope
- (js2-scope-parent-scope js2-current-scope)))
-
-(defsubst js2-enter-loop (loop-node)
- (push loop-node js2-loop-set)
- (push loop-node js2-loop-and-switch-set)
- (js2-push-scope loop-node)
- ;; Tell the current labeled statement (if any) its statement,
- ;; and set the jump target of the first label to the loop.
- ;; These are used in `js2-parse-continue' to verify that the
- ;; continue target is an actual labeled loop. (And for codegen.)
- (when js2-labeled-stmt
- (setf (js2-labeled-stmt-node-stmt js2-labeled-stmt) loop-node
- (js2-label-node-loop (car (js2-labeled-stmt-node-labels
- js2-labeled-stmt))) loop-node)))
-
-(defsubst js2-exit-loop ()
- (pop js2-loop-set)
- (pop js2-loop-and-switch-set)
- (js2-pop-scope))
-
-(defsubst js2-enter-switch (switch-node)
- (push switch-node js2-loop-and-switch-set))
-
-(defsubst js2-exit-switch ()
- (pop js2-loop-and-switch-set))
-
-(defun js2-parse (&optional buf cb)
- "Tells the js2 parser to parse a region of JavaScript.
-
-BUF is a buffer or buffer name containing the code to parse.
-Call `narrow-to-region' first to parse only part of the buffer.
-
-The returned AST root node is given some additional properties:
- `node-count' - total number of nodes in the AST
- `buffer' - BUF. The buffer it refers to may change or be killed,
- so the value is not necessarily reliable.
-
-An optional callback CB can be specified to report parsing
-progress. If `(functionp CB)' returns t, it will be called with
-the current line number once before parsing begins, then again
-each time the lexer reaches a new line number.
-
-CB can also be a list of the form `(symbol cb ...)' to specify
-multiple callbacks with different criteria. Each symbol is a
-criterion keyword, and the following element is the callback to
-call
-
- :line - called whenever the line number changes
- :token - called for each new token consumed
-
-The list of criteria could be extended to include entering or
-leaving a statement, an expression, or a function definition."
- (if (and cb (not (functionp cb)))
- (error "criteria callbacks not yet implemented"))
- (let ((inhibit-point-motion-hooks t)
- (js2-compiler-xml-available (>= js2-language-version 160))
- ;; This is a recursive-descent parser, so give it a big stack.
- (max-lisp-eval-depth (max max-lisp-eval-depth 3000))
- (max-specpdl-size (max max-specpdl-size 3000))
- (case-fold-search nil)
- ast)
- (or buf (setq buf (current-buffer)))
- (message nil) ; clear any error message from previous parse
- (save-excursion
- (set-buffer buf)
- (setq js2-scanned-comments nil
- js2-parsed-errors nil
- js2-parsed-warnings nil
- js2-imenu-recorder nil
- js2-imenu-function-map nil
- js2-label-set nil)
- (js2-init-scanner)
- (setq ast (js2-with-unmodifying-text-property-changes
- (js2-do-parse)))
- (unless js2-ts-hit-eof
- (js2-report-error "msg.got.syntax.errors" (length js2-parsed-errors)))
- (setf (js2-ast-root-errors ast) js2-parsed-errors
- (js2-ast-root-warnings ast) js2-parsed-warnings)
- ;; if we didn't find any declarations, put a dummy in this list so we
- ;; don't end up re-parsing the buffer in `js2-mode-create-imenu-index'
- (unless js2-imenu-recorder
- (setq js2-imenu-recorder 'empty))
- (run-hooks 'js2-parse-finished-hook)
- ast)))
-
-;; Corresponds to Rhino's Parser.parse() method.
-(defun js2-do-parse ()
- "Parse current buffer starting from current point.
-Scanner should be initialized."
- (let ((pos js2-ts-cursor)
- (end js2-ts-cursor) ; in case file is empty
- root n tt)
- ;; initialize buffer-local parsing vars
- (setf root (make-js2-ast-root :buffer (buffer-name) :pos pos)
- js2-current-script-or-fn root
- js2-current-scope root
- js2-current-flagged-token js2-EOF
- js2-nesting-of-function 0
- js2-labeled-stmt nil
- js2-recorded-assignments nil) ; for js2-highlight
- (while (/= (setq tt (js2-peek-token)) js2-EOF)
- (if (= tt js2-FUNCTION)
- (progn
- (js2-consume-token)
- (setq n (js2-parse-function (if js2-called-by-compile-function
- 'FUNCTION_EXPRESSION
- 'FUNCTION_STATEMENT)))
- (js2-record-imenu-functions n))
- ;; not a function - parse a statement
- (setq n (js2-parse-statement)))
- ;; add function or statement to script
- (setq end (js2-node-end n))
- (js2-block-node-push root n))
- ;; add comments to root in lexical order
- (when js2-scanned-comments
- ;; if we find a comment beyond end of normal kids, use its end
- (setq end (max end (js2-node-end (first js2-scanned-comments))))
- (dolist (comment js2-scanned-comments)
- (push comment (js2-ast-root-comments root))
- (js2-node-add-children root comment)))
- (setf (js2-node-len root) (- end pos))
- ;; Give extensions a chance to muck with things before highlighting starts.
- (dolist (callback js2-post-parse-callbacks)
- (funcall callback))
- (js2-highlight-undeclared-vars)
- root))
-
-(defun js2-function-parser ()
- (js2-consume-token)
- (js2-parse-function 'FUNCTION_EXPRESSION_STATEMENT))
-
-(defun js2-parse-function-closure-body (fn-node)
- "Parse a JavaScript 1.8 function closure body."
- (let ((js2-nesting-of-function (1+ js2-nesting-of-function)))
- (if js2-ts-hit-eof
- (js2-report-error "msg.no.brace.body" nil
- (js2-node-pos fn-node)
- (- js2-ts-cursor (js2-node-pos fn-node)))
- (js2-node-add-children fn-node
- (setf (js2-function-node-body fn-node)
- (js2-parse-expr))))))
-
-(defun js2-parse-function-body (fn-node)
- (js2-must-match js2-LC "msg.no.brace.body"
- (js2-node-pos fn-node)
- (- js2-ts-cursor (js2-node-pos fn-node)))
- (let ((pos js2-token-beg) ; LC position
- (pn (make-js2-block-node)) ; starts at LC position
- tt
- end)
- (incf js2-nesting-of-function)
- (unwind-protect
- (while (not (or (= (setq tt (js2-peek-token)) js2-ERROR)
- (= tt js2-EOF)
- (= tt js2-RC)))
- (js2-block-node-push pn (if (/= tt js2-FUNCTION)
- (js2-parse-statement)
- (js2-consume-token)
- (js2-parse-function 'FUNCTION_STATEMENT))))
- (decf js2-nesting-of-function))
- (setq end js2-token-end) ; assume no curly and leave at current token
- (if (js2-must-match js2-RC "msg.no.brace.after.body" pos)
- (setq end js2-token-end))
- (setf (js2-node-pos pn) pos
- (js2-node-len pn) (- end pos))
- (setf (js2-function-node-body fn-node) pn)
- (js2-node-add-children fn-node pn)
- pn))
-
-(defun js2-parse-function-params (fn-node pos)
- (if (js2-match-token js2-RP)
- (setf (js2-function-node-rp fn-node) (- js2-token-beg pos))
- (let (params len param)
- (loop for tt = (js2-peek-token)
- do
- (cond
- ;; destructuring param
- ((or (= tt js2-LB) (= tt js2-LC))
- (push (js2-parse-primary-expr) params))
- ;; simple name
- (t
- (js2-must-match js2-NAME "msg.no.parm")
- (js2-record-face 'js2-function-param)
- (setq param (js2-create-name-node))
- (js2-define-symbol js2-LP js2-ts-string param)
- (push param params)))
- while
- (js2-match-token js2-COMMA))
- (if (js2-must-match js2-RP "msg.no.paren.after.parms")
- (setf (js2-function-node-rp fn-node) (- js2-token-beg pos)))
- (dolist (p params)
- (js2-node-add-children fn-node p)
- (push p (js2-function-node-params fn-node))))))
-
-(defsubst js2-check-inconsistent-return-warning (fn-node name)
- "Possibly show inconsistent-return warning.
-Last token scanned is the close-curly for the function body."
- (when (and js2-mode-show-strict-warnings
- js2-strict-inconsistent-return-warning
- (not (js2-has-consistent-return-usage
- (js2-function-node-body fn-node))))
- ;; Have it extend from close-curly to bol or beginning of block.
- (let ((pos (save-excursion
- (goto-char js2-token-end)
- (max (js2-node-abs-pos (js2-function-node-body fn-node))
- (point-at-bol))))
- (end js2-token-end))
- (if (plusp (js2-name-node-length name))
- (js2-add-strict-warning "msg.no.return.value"
- (js2-name-node-name name) pos end)
- (js2-add-strict-warning "msg.anon.no.return.value" nil pos end)))))
-
-(defun js2-parse-function (function-type)
- "Function parser. FUNCTION-TYPE is a symbol."
- (let ((pos js2-token-beg) ; start of 'function' keyword
- name
- name-beg
- name-end
- fn-node
- lp
- (synthetic-type function-type)
- member-expr-node)
- ;; parse function name, expression, or non-name (anonymous)
- (cond
- ;; function foo(...)
- ((js2-match-token js2-NAME)
- (setq name (js2-create-name-node t)
- name-beg js2-token-beg
- name-end js2-token-end)
- (unless (js2-match-token js2-LP)
- (when js2-allow-member-expr-as-function-name
- ;; function foo.bar(...)
- (setq member-expr-node name
- name nil
- member-expr-node (js2-parse-member-expr-tail
- nil member-expr-node)))
- (js2-must-match js2-LP "msg.no.paren.parms")))
- ((js2-match-token js2-LP)
- nil) ; anonymous function: leave name as null
- (t
- ;; function random-member-expr(...)
- (when js2-allow-member-expr-as-function-name
- ;; Note that memberExpr can not start with '(' like
- ;; in function (1+2).toString(), because 'function (' already
- ;; processed as anonymous function
- (setq member-expr-node (js2-parse-member-expr)))
- (js2-must-match js2-LP "msg.no.paren.parms")))
- (if (= js2-current-token js2-LP) ; eventually matched LP?
- (setq lp js2-token-beg))
- (if member-expr-node
- (progn
- (setq synthetic-type 'FUNCTION_EXPRESSION)
- (js2-parse-highlight-member-expr-fn-name member-expr-node))
- (if name
- (js2-set-face name-beg name-end
- 'font-lock-function-name-face 'record)))
- (if (and (not (eq synthetic-type 'FUNCTION_EXPRESSION))
- (plusp (js2-name-node-length name)))
- ;; Function statements define a symbol in the enclosing scope
- (js2-define-symbol js2-FUNCTION (js2-name-node-name name) fn-node))
- (setf fn-node (make-js2-function-node :pos pos
- :name name
- :form function-type
- :lp (if lp (- lp pos))))
- (if (or (js2-inside-function) (plusp js2-nesting-of-with))
- ;; 1. Nested functions are not affected by the dynamic scope flag
- ;; as dynamic scope is already a parent of their scope.
- ;; 2. Functions defined under the with statement also immune to
- ;; this setup, in which case dynamic scope is ignored in favor
- ;; of the with object.
- (setf (js2-function-node-ignore-dynamic fn-node) t))
- ;; dynamically bind all the per-function variables
- (let ((js2-current-script-or-fn fn-node)
- (js2-current-scope fn-node)
- (js2-nesting-of-with 0)
- (js2-end-flags 0)
- js2-label-set
- js2-loop-set
- js2-loop-and-switch-set)
- (js2-parse-function-params fn-node pos)
- (if (and (>= js2-language-version 180)
- (/= (js2-peek-token) js2-LC))
- (js2-parse-function-closure-body fn-node)
- (js2-parse-function-body fn-node))
- (if name
- (js2-node-add-children fn-node name))
- (js2-check-inconsistent-return-warning fn-node name)
- ;; Function expressions define a name only in the body of the
- ;; function, and only if not hidden by a parameter name
- (if (and name
- (eq synthetic-type 'FUNCTION_EXPRESSION)
- (null (js2-scope-get-symbol js2-current-scope
- (js2-name-node-name name))))
- (js2-define-symbol js2-FUNCTION
- (js2-name-node-name name)
- fn-node))
- (if (and name
- (eq function-type 'FUNCTION_EXPRESSION_STATEMENT))
- (js2-record-imenu-functions fn-node)))
- (setf (js2-node-len fn-node) (- js2-ts-cursor pos)
- (js2-function-node-member-expr fn-node) member-expr-node) ; may be
nil
- ;; Rhino doesn't do this, but we need it for finding undeclared vars.
- ;; We wait until after parsing the function to set its parent scope,
- ;; since `js2-define-symbol' needs the defining-scope check to stop
- ;; at the function boundary when checking for redeclarations.
- (setf (js2-scope-parent-scope fn-node) js2-current-scope)
- fn-node))
-
-(defun js2-parse-statements (&optional parent)
- "Parse a statement list. Last token consumed must be js2-LC.
-
-PARENT can be a `js2-block-node', in which case the statements are
-appended to PARENT. Otherwise a new `js2-block-node' is created
-and returned.
-
-This function does not match the closing js2-RC: the caller
-matches the RC so it can provide a suitable error message if not
-matched. This means it's up to the caller to set the length of
-the node to include the closing RC. The node start pos is set to
-the absolute buffer start position, and the caller should fix it
-up to be relative to the parent node. All children of this block
-node are given relative start positions and correct lengths."
- (let ((pn (or parent (make-js2-block-node)))
- tt)
- (setf (js2-node-pos pn) js2-token-beg)
- (while (and (> (setq tt (js2-peek-token)) js2-EOF)
- (/= tt js2-RC))
- (js2-block-node-push pn (js2-parse-statement)))
- pn))
-
-(defun js2-parse-statement ()
- (let (tt pn beg end)
- ;; coarse-grained user-interrupt check - needs work
- (and js2-parse-interruptable-p
- (zerop (% (incf js2-parse-stmt-count)
- js2-statements-per-pause))
- (input-pending-p)
- (throw 'interrupted t))
- (setq pn (js2-statement-helper))
- ;; no-side-effects warning check
- (unless (js2-node-has-side-effects pn)
- (setq end (js2-node-end pn))
- (save-excursion
- (goto-char end)
- (setq beg (max (js2-node-pos pn) (point-at-bol))))
- (js2-add-strict-warning "msg.no.side.effects" nil beg end))
- pn))
-
-;; These correspond to the switch cases in Parser.statementHelper
-(defconst js2-parsers
- (let ((parsers (make-vector js2-num-tokens
- #'js2-parse-expr-stmt)))
- (aset parsers js2-BREAK #'js2-parse-break)
- (aset parsers js2-CONST #'js2-parse-const-var)
- (aset parsers js2-CONTINUE #'js2-parse-continue)
- (aset parsers js2-DEBUGGER #'js2-parse-debugger)
- (aset parsers js2-DEFAULT #'js2-parse-default-xml-namespace)
- (aset parsers js2-DO #'js2-parse-do)
- (aset parsers js2-FOR #'js2-parse-for)
- (aset parsers js2-FUNCTION #'js2-function-parser)
- (aset parsers js2-IF #'js2-parse-if)
- (aset parsers js2-LC #'js2-parse-block)
- (aset parsers js2-LET #'js2-parse-let-stmt)
- (aset parsers js2-NAME #'js2-parse-name-or-label)
- (aset parsers js2-RETURN #'js2-parse-ret-yield)
- (aset parsers js2-SEMI #'js2-parse-semi)
- (aset parsers js2-SWITCH #'js2-parse-switch)
- (aset parsers js2-THROW #'js2-parse-throw)
- (aset parsers js2-TRY #'js2-parse-try)
- (aset parsers js2-VAR #'js2-parse-const-var)
- (aset parsers js2-WHILE #'js2-parse-while)
- (aset parsers js2-WITH #'js2-parse-with)
- (aset parsers js2-YIELD #'js2-parse-ret-yield)
- parsers)
- "A vector mapping token types to parser functions.")
-
-(defsubst js2-parse-warn-missing-semi (beg end)
- (and js2-mode-show-strict-warnings
- js2-strict-missing-semi-warning
- (js2-add-strict-warning
- "msg.missing.semi" nil
- ;; back up to beginning of statement or line
- (max beg (save-excursion
- (goto-char end)
- (point-at-bol)))
- end)))
-
-(defconst js2-no-semi-insertion
- (list js2-IF
- js2-SWITCH
- js2-WHILE
- js2-DO
- js2-FOR
- js2-TRY
- js2-WITH
- js2-LC
- js2-ERROR
- js2-SEMI
- js2-FUNCTION)
- "List of tokens that don't do automatic semicolon insertion.")
-
-(defconst js2-autoinsert-semi-and-warn
- (list js2-ERROR js2-EOF js2-RC))
-
-(defun js2-statement-helper ()
- (let* ((tt (js2-peek-token))
- (first-tt tt)
- (beg js2-token-beg)
- (parser (if (= tt js2-ERROR)
- #'js2-parse-semi
- (aref js2-parsers tt)))
- pn
- tt-flagged)
- ;; If the statement is set, then it's been told its label by now.
- (and js2-labeled-stmt
- (js2-labeled-stmt-node-stmt js2-labeled-stmt)
- (setq js2-labeled-stmt nil))
- (setq pn (funcall parser))
- ;; Don't do auto semi insertion for certain statement types.
- (unless (or (memq first-tt js2-no-semi-insertion)
- (js2-labeled-stmt-node-p pn))
- (js2-auto-insert-semicolon pn))
- pn))
-
-(defun js2-auto-insert-semicolon (pn)
- (let* ((tt-flagged (js2-peek-flagged-token))
- (tt (logand tt-flagged js2-clear-ti-mask))
- (pos (js2-node-pos pn)))
- (cond
- ((= tt js2-SEMI)
- ;; Consume ';' as a part of expression
- (js2-consume-token)
- ;; extend the node bounds to include the semicolon.
- (setf (js2-node-len pn) (- js2-token-end pos)))
- ((memq tt js2-autoinsert-semi-and-warn)
- ;; Autoinsert ;
- (js2-parse-warn-missing-semi pos (js2-node-end pn)))
- (t
- (if (js2-flag-not-set-p tt-flagged js2-ti-after-eol)
- ;; Report error if no EOL or autoinsert ';' otherwise
- (js2-report-error "msg.no.semi.stmt")
- (js2-parse-warn-missing-semi pos (js2-node-end pn)))))))
-
-(defun js2-parse-condition ()
- "Parse a parenthesized boolean expression, e.g. in an if- or while-stmt.
-The parens are discarded and the expression node is returned.
-The `pos' field of the return value is set to an absolute position
-that must be fixed up by the caller.
-Return value is a list (EXPR LP RP), with absolute paren positions."
- (let (pn lp rp)
- (if (js2-must-match js2-LP "msg.no.paren.cond")
- (setq lp js2-token-beg))
- (setq pn (js2-parse-expr))
- (if (js2-must-match js2-RP "msg.no.paren.after.cond")
- (setq rp js2-token-beg))
- ;; Report strict warning on code like "if (a = 7) ..."
- (if (and js2-strict-cond-assign-warning
- (js2-assign-node-p pn))
- (js2-add-strict-warning "msg.equal.as.assign" nil
- (js2-node-pos pn)
- (+ (js2-node-pos pn)
- (js2-node-len pn))))
- (list pn lp rp)))
-
-(defun js2-parse-if ()
- "Parser for if-statement. Last matched token must be js2-IF."
- (let ((pos js2-token-beg)
- cond
- if-true
- if-false
- else-pos
- end
- pn)
- (js2-consume-token)
- (setq cond (js2-parse-condition)
- if-true (js2-parse-statement)
- if-false (if (js2-match-token js2-ELSE)
- (progn
- (setq else-pos (- js2-token-beg pos))
- (js2-parse-statement)))
- end (js2-node-end (or if-false if-true))
- pn (make-js2-if-node :pos pos
- :len (- end pos)
- :condition (car cond)
- :then-part if-true
- :else-part if-false
- :else-pos else-pos
- :lp (js2-relpos (second cond) pos)
- :rp (js2-relpos (third cond) pos)))
- (js2-node-add-children pn (car cond) if-true if-false)
- pn))
-
-(defun js2-parse-switch ()
- "Parser for if-statement. Last matched token must be js2-SWITCH."
- (let ((pos js2-token-beg)
- tt
- pn
- discriminant
- has-default
- case-expr
- case-node
- case-pos
- cases
- stmt
- lp
- rp)
- (js2-consume-token)
- (if (js2-must-match js2-LP "msg.no.paren.switch")
- (setq lp js2-token-beg))
- (setq discriminant (js2-parse-expr)
- pn (make-js2-switch-node :discriminant discriminant
- :pos pos
- :lp (js2-relpos lp pos)))
- (js2-node-add-children pn discriminant)
- (js2-enter-switch pn)
- (unwind-protect
- (progn
- (if (js2-must-match js2-RP "msg.no.paren.after.switch")
- (setf (js2-switch-node-rp pn) (- js2-token-beg pos)))
- (js2-must-match js2-LC "msg.no.brace.switch")
- (catch 'break
- (while t
- (setq tt (js2-next-token)
- case-pos js2-token-beg)
- (cond
- ((= tt js2-RC)
- (setf (js2-node-len pn) (- js2-token-end pos))
- (throw 'break nil)) ; done
- ((= tt js2-CASE)
- (setq case-expr (js2-parse-expr))
- (js2-must-match js2-COLON "msg.no.colon.case"))
- ((= tt js2-DEFAULT)
- (if has-default
- (js2-report-error "msg.double.switch.default"))
- (setq has-default t
- case-expr nil)
- (js2-must-match js2-COLON "msg.no.colon.case"))
- (t
- (js2-report-error "msg.bad.switch")
- (throw 'break nil)))
- (setq case-node (make-js2-case-node :pos case-pos
- :len (- js2-token-end
case-pos)
- :expr case-expr))
- (js2-node-add-children case-node case-expr)
- (while (and (/= (setq tt (js2-peek-token)) js2-RC)
- (/= tt js2-CASE)
- (/= tt js2-DEFAULT)
- (/= tt js2-EOF))
- (setf stmt (js2-parse-statement)
- (js2-node-len case-node) (- (js2-node-end stmt)
case-pos))
- (js2-block-node-push case-node stmt))
- (push case-node cases)))
- ;; add cases last, as pushing reverses the order to be correct
- (dolist (kid cases)
- (js2-node-add-children pn kid)
- (push kid (js2-switch-node-cases pn)))
- pn) ; return value
- (js2-exit-switch))))
-
-(defun js2-parse-while ()
- "Parser for while-statement. Last matched token must be js2-WHILE."
- (let ((pos js2-token-beg)
- (pn (make-js2-while-node))
- cond
- body)
- (js2-consume-token)
- (js2-enter-loop pn)
- (unwind-protect
- (progn
- (setf cond (js2-parse-condition)
- (js2-while-node-condition pn) (car cond)
- body (js2-parse-statement)
- (js2-while-node-body pn) body
- (js2-node-len pn) (- (js2-node-end body) pos)
- (js2-while-node-lp pn) (js2-relpos (second cond) pos)
- (js2-while-node-rp pn) (js2-relpos (third cond) pos))
- (js2-node-add-children pn body (car cond)))
- (js2-exit-loop))
- pn))
-
-(defun js2-parse-do ()
- "Parser for do-statement. Last matched token must be js2-DO."
- (let ((pos js2-token-beg)
- (pn (make-js2-do-node))
- cond
- body
- end)
- (js2-consume-token)
- (js2-enter-loop pn)
- (unwind-protect
- (progn
- (setq body (js2-parse-statement))
- (js2-must-match js2-WHILE "msg.no.while.do")
- (setf (js2-do-node-while-pos pn) (- js2-token-beg pos)
- cond (js2-parse-condition)
- (js2-do-node-condition pn) (car cond)
- (js2-do-node-body pn) body
- end js2-ts-cursor
- (js2-do-node-lp pn) (js2-relpos (second cond) pos)
- (js2-do-node-rp pn) (js2-relpos (third cond) pos))
- (js2-node-add-children pn (car cond) body))
- (js2-exit-loop))
- ;; Always auto-insert semicolon to follow SpiderMonkey:
- ;; It is required by ECMAScript but is ignored by the rest of
- ;; world; see bug 238945
- (if (js2-match-token js2-SEMI)
- (setq end js2-ts-cursor))
- (setf (js2-node-len pn) (- end pos))
- pn))
-
-(defun js2-parse-for ()
- "Parser for for-statement. Last matched token must be js2-FOR.
-Parses for, for-in, and for each-in statements."
- (let ((for-pos js2-token-beg)
- pn
- is-for-each
- is-for-in
- in-pos
- each-pos
- tmp-pos
- init ; Node init is also foo in 'foo in object'
- cond ; Node cond is also object in 'foo in object'
- incr ; 3rd section of for-loop initializer
- body
- tt
- lp
- rp)
- (js2-consume-token)
- ;; See if this is a for each () instead of just a for ()
- (when (js2-match-token js2-NAME)
- (if (string= "each" js2-ts-string)
- (progn
- (setq is-for-each t
- each-pos (- js2-token-beg for-pos)) ; relative
- (js2-record-face 'font-lock-keyword-face))
- (js2-report-error "msg.no.paren.for")))
- (if (js2-must-match js2-LP "msg.no.paren.for")
- (setq lp (- js2-token-beg for-pos)))
- (setq tt (js2-peek-token))
- ;; parse init clause
- (let ((js2-in-for-init t)) ; set as dynamic variable
- (cond
- ((= tt js2-SEMI)
- (setq init (make-js2-empty-expr-node)))
- ((or (= tt js2-VAR) (= tt js2-LET))
- (js2-consume-token)
- (setq init (js2-parse-variables tt js2-token-beg)))
- (t
- (setq init (js2-parse-expr)))))
- (if (js2-match-token js2-IN)
- (setq is-for-in t
- in-pos (- js2-token-beg for-pos)
- cond (js2-parse-expr)) ; object over which we're iterating
- ;; else ordinary for loop - parse cond and incr
- (js2-must-match js2-SEMI "msg.no.semi.for")
- (setq cond (if (= (js2-peek-token) js2-SEMI)
- (make-js2-empty-expr-node) ; no loop condition
- (js2-parse-expr)))
- (js2-must-match js2-SEMI "msg.no.semi.for.cond")
- (setq tmp-pos js2-token-end
- incr (if (= (js2-peek-token) js2-RP)
- (make-js2-empty-expr-node :pos tmp-pos)
- (js2-parse-expr))))
- (if (js2-must-match js2-RP "msg.no.paren.for.ctrl")
- (setq rp (- js2-token-beg for-pos)))
- (if (not is-for-in)
- (setq pn (make-js2-for-node :init init
- :condition cond
- :update incr
- :lp lp
- :rp rp))
- ;; cond could be null if 'in obj' got eaten by the init node.
- (if (js2-infix-node-p init)
- ;; it was (foo in bar) instead of (var foo in bar)
- (setq cond (js2-infix-node-right init)
- init (js2-infix-node-left init))
- (if (and (js2-var-decl-node-p init)
- (> (length (js2-var-decl-node-kids init)) 1))
- (js2-report-error "msg.mult.index")))
- (setq pn (make-js2-for-in-node :iterator init
- :object cond
- :in-pos in-pos
- :foreach-p is-for-each
- :each-pos each-pos
- :lp lp
- :rp rp)))
- (unwind-protect
- (progn
- (js2-enter-loop pn)
- ;; We have to parse the body -after- creating the loop node,
- ;; so that the loop node appears in the js2-loop-set, allowing
- ;; break/continue statements to find the enclosing loop.
- (setf body (js2-parse-statement)
- (js2-loop-node-body pn) body
- (js2-node-pos pn) for-pos
- (js2-node-len pn) (- (js2-node-end body) for-pos))
- (js2-node-add-children pn init cond incr body))
- ;; finally
- (js2-exit-loop))
- pn))
-
-(defun js2-parse-try ()
- "Parser for try-statement. Last matched token must be js2-TRY."
- (let ((try-pos js2-token-beg)
- try-end
- try-block
- catch-blocks
- finally-block
- saw-default-catch
- peek
- var-name
- catch-cond
- catch-node
- guard-kwd
- catch-pos
- finally-pos
- pn
- block
- lp
- rp)
- (js2-consume-token)
- (if (/= (js2-peek-token) js2-LC)
- (js2-report-error "msg.no.brace.try"))
- (setq try-block (js2-parse-statement)
- try-end (js2-node-end try-block)
- peek (js2-peek-token))
- (cond
- ((= peek js2-CATCH)
- (while (js2-match-token js2-CATCH)
- (setq catch-pos js2-token-beg
- guard-kwd nil
- catch-cond nil
- lp nil
- rp nil)
- (if saw-default-catch
- (js2-report-error "msg.catch.unreachable"))
- (if (js2-must-match js2-LP "msg.no.paren.catch")
- (setq lp (- js2-token-beg catch-pos)))
- (js2-must-match js2-NAME "msg.bad.catchcond")
- (setq var-name (js2-create-name-node))
- (if (js2-match-token js2-IF)
- (setq guard-kwd (- js2-token-beg catch-pos)
- catch-cond (js2-parse-expr))
- (setq saw-default-catch t))
- (if (js2-must-match js2-RP "msg.bad.catchcond")
- (setq rp (- js2-token-beg catch-pos)))
- (js2-must-match js2-LC "msg.no.brace.catchblock")
- (setq block (js2-parse-statements)
- try-end (js2-node-end block)
- catch-node (make-js2-catch-node :pos catch-pos
- :var-name var-name
- :guard-expr catch-cond
- :guard-kwd guard-kwd
- :block block
- :lp lp
- :rp rp))
- (if (js2-must-match js2-RC "msg.no.brace.after.body")
- (setq try-end js2-token-beg))
- (setf (js2-node-len block) (- try-end (js2-node-pos block))
- (js2-node-len catch-node) (- try-end catch-pos))
- (js2-node-add-children catch-node var-name catch-cond block)
- (push catch-node catch-blocks)))
- ((/= peek js2-FINALLY)
- (js2-must-match js2-FINALLY "msg.try.no.catchfinally"
- (js2-node-pos try-block)
- (- (setq try-end (js2-node-end try-block))
- (js2-node-pos try-block)))))
- (when (js2-match-token js2-FINALLY)
- (setq finally-pos js2-token-beg
- block (js2-parse-statement)
- try-end (js2-node-end block)
- finally-block (make-js2-finally-node :pos finally-pos
- :len (- try-end finally-pos)
- :body block))
- (js2-node-add-children finally-block block))
- (setq pn (make-js2-try-node :pos try-pos
- :len (- try-end try-pos)
- :try-block try-block
- :finally-block finally-block))
- (js2-node-add-children pn try-block finally-block)
- ;; push them onto the try-node, which reverses and corrects their order
- (dolist (cb catch-blocks)
- (js2-node-add-children pn cb)
- (push cb (js2-try-node-catch-clauses pn)))
- pn))
-
-(defun js2-parse-throw ()
- "Parser for throw-statement. Last matched token must be js2-THROW."
- (let ((pos js2-token-beg)
- expr
- pn)
- (js2-consume-token)
- (if (= (js2-peek-token-or-eol) js2-EOL)
- ;; ECMAScript does not allow new lines before throw expression,
- ;; see bug 256617
- (js2-report-error "msg.bad.throw.eol"))
- (setq expr (js2-parse-expr)
- pn (make-js2-throw-node :pos pos
- :len (- (js2-node-end expr) pos)
- :expr expr))
- (js2-node-add-children pn expr)
- pn))
-
-(defsubst js2-match-jump-label-name (label-name)
- "If break/continue specified a label, return that label's labeled stmt.
-Returns the corresponding `js2-labeled-stmt-node', or if LABEL-NAME
-does not match an existing label, reports an error and returns nil."
- (let ((bundle (cdr (assoc label-name js2-label-set))))
- (if (null bundle)
- (js2-report-error "msg.undef.label"))
- bundle))
-
-(defun js2-parse-break ()
- "Parser for break-statement. Last matched token must be js2-BREAK."
- (let ((pos js2-token-beg)
- (end js2-token-end)
- break-target ; statement to break from
- break-label ; in "break foo", name-node representing the foo
- labels ; matching labeled statement to break to
- pn)
- (js2-consume-token) ; `break'
- (when (eq (js2-peek-token-or-eol) js2-NAME)
- (js2-consume-token)
- (setq break-label (js2-create-name-node)
- end (js2-node-end break-label)
- ;; matchJumpLabelName only matches if there is one
- labels (js2-match-jump-label-name js2-ts-string)
- break-target (if labels (car (js2-labeled-stmt-node-labels
labels)))))
- (unless (or break-target break-label)
- ;; no break target specified - try for innermost enclosing loop/switch
- (if (null js2-loop-and-switch-set)
- (unless break-label
- (js2-report-error "msg.bad.break" nil pos (length "break")))
- (setq break-target (car js2-loop-and-switch-set))))
- (setq pn (make-js2-break-node :pos pos
- :len (- end pos)
- :label break-label
- :target break-target))
- (js2-node-add-children pn break-label) ; but not break-target
- pn))
-
-(defun js2-parse-continue ()
- "Parser for continue-statement. Last matched token must be js2-CONTINUE."
- (let ((pos js2-token-beg)
- (end js2-token-end)
- label ; optional user-specified label, a `js2-name-node'
- labels ; current matching labeled stmt, if any
- target ; the `js2-loop-node' target of this continue stmt
- pn)
- (js2-consume-token) ; `continue'
- (when (= (js2-peek-token-or-eol) js2-NAME)
- (js2-consume-token)
- (setq label (js2-create-name-node)
- end (js2-node-end label)
- ;; matchJumpLabelName only matches if there is one
- labels (js2-match-jump-label-name js2-ts-string)))
- (cond
- ((null labels) ; no current label to go to
- (if (null js2-loop-set) ; no loop to continue to
- (js2-report-error "msg.continue.outside" nil pos
- (length "continue"))
- (setq target (car js2-loop-set)))) ; innermost enclosing loop
- (t
- (if (js2-loop-node-p (js2-labeled-stmt-node-stmt labels))
- (setq target (js2-labeled-stmt-node-stmt labels))
- (js2-report-error "msg.continue.nonloop" nil pos (- end pos)))))
- (setq pn (make-js2-continue-node :pos pos
- :len (- end pos)
- :label label
- :target target))
- (js2-node-add-children pn label) ; but not target - it's not our child
- pn))
-
-(defun js2-parse-with ()
- "Parser for with-statement. Last matched token must be js2-WITH."
- (js2-consume-token)
- (let ((pos js2-token-beg)
- obj body pn lp rp)
- (if (js2-must-match js2-LP "msg.no.paren.with")
- (setq lp js2-token-beg))
- (setq obj (js2-parse-expr))
- (if (js2-must-match js2-RP "msg.no.paren.after.with")
- (setq rp js2-token-beg))
- (let ((js2-nesting-of-with (1+ js2-nesting-of-with)))
- (setq body (js2-parse-statement)))
- (setq pn (make-js2-with-node :pos pos
- :len (- (js2-node-end body) pos)
- :object obj
- :body body
- :lp (js2-relpos lp pos)
- :rp (js2-relpos rp pos)))
- (js2-node-add-children pn obj body)
- pn))
-
-(defun js2-parse-const-var ()
- "Parser for var- or const-statement.
-Last matched token must be js2-CONST or js2-VAR."
- (let ((tt (js2-peek-token))
- (pos js2-token-beg)
- expr
- pn)
- (js2-consume-token)
- (setq expr (js2-parse-variables tt js2-token-beg)
- pn (make-js2-expr-stmt-node :pos pos
- :len (- (js2-node-end expr) pos)
- :expr expr))
- (js2-node-add-children pn expr)
- pn))
-
-(defsubst js2-wrap-with-expr-stmt (pos expr &optional add-child)
- (let ((pn (make-js2-expr-stmt-node :pos pos
- :len (js2-node-len expr)
- :type (if (js2-inside-function)
- js2-EXPR_VOID
- js2-EXPR_RESULT)
- :expr expr)))
- (if add-child
- (js2-node-add-children pn expr))
- pn))
-
-(defun js2-parse-let-stmt ()
- "Parser for let-statement. Last matched token must be js2-LET."
- (js2-consume-token)
- (let ((pos js2-token-beg)
- expr
- pn)
- (if (= (js2-peek-token) js2-LP)
- ;; let expression in statement context
- (setq expr (js2-parse-let pos 'statement)
- pn (js2-wrap-with-expr-stmt pos expr t))
- ;; else we're looking at a statement like let x=6, y=7;
- (setf expr (js2-parse-variables js2-LET pos)
- pn (js2-wrap-with-expr-stmt pos expr t)
- (js2-node-type pn) js2-EXPR_RESULT))
- pn))
-
-(defun js2-parse-ret-yield ()
- (js2-parse-return-or-yield (js2-peek-token) nil))
-
-(defconst js2-parse-return-stmt-enders
- (list js2-SEMI js2-RC js2-EOF js2-EOL js2-ERROR js2-RB js2-RP js2-YIELD))
-
-(defsubst js2-now-all-set (before after mask)
- "Return whether or not the bits in the mask have changed to all set.
-BEFORE is bits before change, AFTER is bits after change, and MASK is
-the mask for bits. Returns t if all the bits in the mask are set in AFTER
-but not BEFORE."
- (and (/= (logand before mask) mask)
- (= (logand after mask) mask)))
-
-(defun js2-parse-return-or-yield (tt expr-context)
- (let ((pos js2-token-beg)
- (end js2-token-end)
- (before js2-end-flags)
- (inside-function (js2-inside-function))
- e
- ret
- name)
- (unless inside-function
- (js2-report-error (if (eq tt js2-RETURN)
- "msg.bad.return"
- "msg.bad.yield")))
- (js2-consume-token)
- ;; This is ugly, but we don't want to require a semicolon.
- (unless (memq (js2-peek-token-or-eol) js2-parse-return-stmt-enders)
- (setq e (js2-parse-expr)
- end (js2-node-end e)))
- (cond
- ((eq tt js2-RETURN)
- (js2-set-flag js2-end-flags (if (null e)
- js2-end-returns
- js2-end-returns-value))
- (setq ret (make-js2-return-node :pos pos
- :len (- end pos)
- :retval e))
- (js2-node-add-children ret e)
- ;; See if we need a strict mode warning.
- ;; TODO: The analysis done by `js2-has-consistent-return-usage' is
- ;; more thorough and accurate than this before/after flag check.
- ;; E.g. if there's a finally-block that always returns, we shouldn't
- ;; show a warning generated by inconsistent returns in the catch blocks.
- ;; Basically `js2-has-consistent-return-usage' needs to keep more state,
- ;; so we know which returns/yields to highlight, and we should get rid of
- ;; all the checking in `js2-parse-return-or-yield'.
- (if (and js2-strict-inconsistent-return-warning
- (js2-now-all-set before js2-end-flags
- (logior js2-end-returns
js2-end-returns-value)))
- (js2-add-strict-warning "msg.return.inconsistent" nil pos end)))
- (t
- (unless (js2-inside-function)
- (js2-report-error "msg.bad.yield"))
- (js2-set-flag js2-end-flags js2-end-yields)
- (setq ret (make-js2-yield-node :pos pos
- :len (- end pos)
- :value e))
- (js2-node-add-children ret e)
- (unless expr-context
- (setq e ret
- ret (js2-wrap-with-expr-stmt pos e t))
- (js2-set-requires-activation)
- (js2-set-is-generator))))
- ;; see if we are mixing yields and value returns.
- (when (and inside-function
- (js2-now-all-set before js2-end-flags
- (logior js2-end-yields js2-end-returns-value)))
- (setq name (js2-function-name js2-current-script-or-fn))
- (if (zerop (length name))
- (js2-report-error "msg.anon.generator.returns" nil pos (- end pos))
- (js2-report-error "msg.generator.returns" name pos (- end pos))))
- ret))
-
-(defun js2-parse-debugger ()
- (js2-consume-token)
- (make-js2-keyword-node :type js2-DEBUGGER))
-
-(defun js2-parse-block ()
- "Parser for a curly-delimited statement block.
-Last token matched must be js2-LC."
- (let ((pos js2-token-beg)
- (pn (make-js2-scope)))
- (js2-consume-token)
- (js2-push-scope pn)
- (unwind-protect
- (progn
- (js2-parse-statements pn)
- (js2-must-match js2-RC "msg.no.brace.block")
- (setf (js2-node-len pn) (- js2-token-end pos)))
- (js2-pop-scope))
- pn))
-
-;; for js2-ERROR too, to have a node for error recovery to work on
-(defun js2-parse-semi ()
- "Parse a statement or handle an error.
-Last matched token is js-SEMI or js-ERROR."
- (let ((tt (js2-peek-token)) pos len)
- (js2-consume-token)
- (if (eq tt js2-SEMI)
- (make-js2-empty-expr-node :len 1)
- (setq pos js2-token-beg
- len (- js2-token-beg pos))
- (js2-report-error "msg.syntax" nil pos len)
- (make-js2-error-node :pos pos :len len))))
-
-(defun js2-parse-default-xml-namespace ()
- "Parse a `default xml namespace = <expr>' e4x statement."
- (let ((pos js2-token-beg)
- end len expr unary es)
- (js2-consume-token)
- (js2-must-have-xml)
- (js2-set-requires-activation)
- (setq len (- js2-ts-cursor pos))
- (unless (and (js2-match-token js2-NAME)
- (string= js2-ts-string "xml"))
- (js2-report-error "msg.bad.namespace" nil pos len))
- (unless (and (js2-match-token js2-NAME)
- (string= js2-ts-string "namespace"))
- (js2-report-error "msg.bad.namespace" nil pos len))
- (unless (js2-match-token js2-ASSIGN)
- (js2-report-error "msg.bad.namespace" nil pos len))
- (setq expr (js2-parse-expr)
- end (js2-node-end expr)
- unary (make-js2-unary-node :type js2-DEFAULTNAMESPACE
- :pos pos
- :len (- end pos)
- :operand expr))
- (js2-node-add-children unary expr)
- (make-js2-expr-stmt-node :pos pos
- :len (- end pos)
- :expr unary)))
-
-(defun js2-record-label (label bundle)
- ;; current token should be colon that `js2-parse-primary-expr' left untouched
- (js2-consume-token)
- (let ((name (js2-label-node-name label))
- labeled-stmt
- dup)
- (when (setq labeled-stmt (cdr (assoc name js2-label-set)))
- ;; flag both labels if possible when used in editing mode
- (if (and js2-parse-ide-mode
- (setq dup (js2-get-label-by-name labeled-stmt name)))
- (js2-report-error "msg.dup.label" nil
- (js2-node-abs-pos dup) (js2-node-len dup)))
- (js2-report-error "msg.dup.label" nil
- (js2-node-pos label) (js2-node-len label)))
- (js2-labeled-stmt-node-add-label bundle label)
- (js2-node-add-children bundle label)
- ;; Add one reference to the bundle per label in `js2-label-set'
- (push (cons name bundle) js2-label-set)))
-
-(defun js2-parse-name-or-label ()
- "Parser for identifier or label. Last token matched must be js2-NAME.
-Called when we found a name in a statement context. If it's a label, we gather
-up any following labels and the next non-label statement into a
-`js2-labeled-stmt-node' bundle and return that. Otherwise we parse an
-expression and return it wrapped in a `js2-expr-stmt-node'."
- (let ((pos js2-token-beg)
- (end js2-token-end)
- expr
- stmt
- pn
- bundle
- (continue t))
- ;; set check for label and call down to `js2-parse-primary-expr'
- (js2-set-check-for-label)
- (setq expr (js2-parse-expr))
- (if (/= (js2-node-type expr) js2-LABEL)
- ;; Parsed non-label expression - wrap with expression stmt.
- (setq pn (js2-wrap-with-expr-stmt pos expr t))
- ;; else parsed a label
- (setq bundle (make-js2-labeled-stmt-node :pos pos))
- (js2-record-label expr bundle)
- ;; look for more labels
- (while (and continue (= (js2-peek-token) js2-NAME))
- (js2-set-check-for-label)
- (setq expr (js2-parse-expr))
- (if (/= (js2-node-type expr) js2-LABEL)
- (progn
- (setq stmt (js2-wrap-with-expr-stmt (js2-node-pos expr) expr t)
- continue nil)
- (js2-auto-insert-semicolon stmt))
- (js2-record-label expr bundle)))
- ;; no more labels; now parse the labeled statement
- (unwind-protect
- (unless stmt
- (let ((js2-labeled-stmt bundle)) ; bind dynamically
- (setq stmt (js2-statement-helper))))
- ;; remove the labels for this statement from the global set
- (dolist (label (js2-labeled-stmt-node-labels bundle))
- (setq js2-label-set (remove label js2-label-set))))
- (setf (js2-labeled-stmt-node-stmt bundle) stmt
- (js2-node-len bundle) (- (js2-node-end stmt) pos))
- (js2-node-add-children bundle stmt)
- bundle)))
-
-(defun js2-parse-expr-stmt ()
- "Default parser in statement context, if no recognized statement found."
- (js2-wrap-with-expr-stmt js2-token-beg (js2-parse-expr) t))
-
-(defun js2-parse-variables (decl-type pos)
- "Parse a comma-separated list of variable declarations.
-Could be a 'var', 'const' or 'let' expression, possibly in a for-loop
initializer.
-
-DECL-TYPE is a token value: either VAR, CONST, or LET depending on context.
-For 'var' or 'const', the keyword should be the token last scanned.
-
-POS is the position where the node should start. It's sometimes the
-var/const/let keyword, and other times the beginning of the first token
-in the first variable declaration.
-
-Returns the parsed `js2-var-decl-node' expression node."
- (let* ((result (make-js2-var-decl-node :decl-type decl-type
- :pos pos))
- destructuring
- kid-pos
- tt
- init
- name
- end
- nbeg nend
- vi
- (continue t))
- ;; Example:
- ;; var foo = {a: 1, b: 2}, bar = [3, 4];
- ;; var {b: s2, a: s1} = foo, x = 6, y, [s3, s4] = bar;
- (while continue
- (setq destructuring nil
- name nil
- tt (js2-peek-token)
- kid-pos js2-token-beg
- end js2-token-end
- init nil)
- (if (or (= tt js2-LB) (= tt js2-LC))
- ;; Destructuring assignment, e.g., var [a, b] = ...
- (setq destructuring (js2-parse-primary-expr)
- end (js2-node-end destructuring))
- ;; Simple variable name
- (when (js2-must-match js2-NAME "msg.bad.var")
- (setq name (js2-create-name-node)
- nbeg js2-token-beg
- nend js2-token-end
- end nend)
- (js2-define-symbol decl-type js2-ts-string name js2-in-for-init)))
- (when (js2-match-token js2-ASSIGN)
- (setq init (js2-parse-assign-expr)
- end (js2-node-end init))
- (if (and js2-parse-ide-mode
- (or (js2-object-node-p init)
- (js2-function-node-p init)))
- (js2-record-imenu-functions init name)))
- (when name
- (js2-set-face nbeg nend (if (js2-function-node-p init)
- 'font-lock-function-name-face
- 'font-lock-variable-name-face)
- 'record))
- (setq vi (make-js2-var-init-node :pos kid-pos
- :len (- end kid-pos)
- :type decl-type))
- (if destructuring
- (progn
- (if (and (null init) (not js2-in-for-init))
- (js2-report-error "msg.destruct.assign.no.init"))
- (setf (js2-var-init-node-target vi) destructuring))
- (setf (js2-var-init-node-target vi) name))
- (setf (js2-var-init-node-initializer vi) init)
- (js2-node-add-children vi name destructuring init)
- (js2-block-node-push result vi)
- (unless (js2-match-token js2-COMMA)
- (setq continue nil)))
- (setf (js2-node-len result) (- end pos))
- result))
-
-(defun js2-parse-let (pos &optional stmt-p)
- "Parse a let expression or statement.
-A let-expression is of the form `let (vars) expr'.
-A let-statment is of the form `let (vars) {statements}'.
-The third form of let is a variable declaration list, handled
-by `js2-parse-variables'."
- (let ((pn (make-js2-let-node :pos pos))
- beg vars body)
- (if (js2-must-match js2-LP "msg.no.paren.after.let")
- (setf (js2-let-node-lp pn) (- js2-token-beg pos)))
- (js2-push-scope pn)
- (unwind-protect
- (progn
- (setq vars (js2-parse-variables js2-LET js2-token-beg))
- (if (js2-must-match js2-RP "msg.no.paren.let")
- (setf (js2-let-node-rp pn) (- js2-token-beg pos)))
- (if (and stmt-p (eq (js2-peek-token) js2-LC))
- ;; let statement
- (progn
- (js2-consume-token)
- (setf beg js2-token-beg ; position stmt at LC
- body (js2-parse-statements))
- (js2-must-match js2-RC "msg.no.curly.let")
- (setf (js2-node-len body) (- js2-token-end beg)
- (js2-node-len pn) (- js2-token-end pos)
- (js2-let-node-body pn) body
- (js2-node-type pn) js2-LET))
- ;; let expression
- (setf body (js2-parse-expr)
- (js2-node-len pn) (- (js2-node-end body) pos)
- (js2-let-node-body pn) body))
- (js2-node-add-children pn vars body))
- (js2-pop-scope))
- pn))
-
-(defsubst js2-define-new-symbol (decl-type name node)
- (js2-scope-put-symbol js2-current-scope
- name
- (make-js2-symbol decl-type name node)))
-
-(defun js2-define-symbol (decl-type name &optional node ignore-not-in-block)
- "Define a symbol in the current scope.
-If NODE is non-nil, it is the AST node associated with the symbol."
- (let* ((defining-scope (js2-get-defining-scope js2-current-scope name))
- (symbol (if defining-scope
- (js2-scope-get-symbol defining-scope name)))
- (sdt (if symbol (js2-symbol-decl-type symbol) -1)))
- (cond
- ((and symbol ; already defined
- (or (= sdt js2-CONST) ; old version is const
- (= decl-type js2-CONST) ; new version is const
- ;; two let-bound vars in this block have same name
- (and (= sdt js2-LET)
- (eq defining-scope js2-current-scope))))
- (js2-report-error
- (cond
- ((= sdt js2-CONST) "msg.const.redecl")
- ((= sdt js2-LET) "msg.let.redecl")
- ((= sdt js2-VAR) "msg.var.redecl")
- ((= sdt js2-FUNCTION) "msg.function.redecl")
- (t "msg.parm.redecl"))
- name))
- ((= decl-type js2-LET)
- (if (and (not ignore-not-in-block)
- (or (= (js2-node-type js2-current-scope) js2-IF)
- (js2-loop-node-p js2-current-scope)))
- (js2-report-error "msg.let.decl.not.in.block")
- (js2-define-new-symbol decl-type name node)))
- ((or (= decl-type js2-VAR)
- (= decl-type js2-CONST)
- (= decl-type js2-FUNCTION))
- (if symbol
- (if (and js2-strict-var-redeclaration-warning (= sdt js2-VAR))
- (js2-add-strict-warning "msg.var.redecl" name)
- (if (and js2-strict-var-hides-function-arg-warning (= sdt js2-LP))
- (js2-add-strict-warning "msg.var.hides.arg" name)))
- (js2-define-new-symbol decl-type name node)))
- ((= decl-type js2-LP)
- (if symbol
- ;; must be duplicate parameter. Second parameter hides the
- ;; first, so go ahead and add the second pararameter
- (js2-report-warning "msg.dup.parms" name))
- (js2-define-new-symbol decl-type name node))
- (t (js2-code-bug)))))
-
-(defun js2-parse-expr ()
- (let* ((pn (js2-parse-assign-expr))
- (pos (js2-node-pos pn))
- left
- right
- op-pos)
- (while (js2-match-token js2-COMMA)
- (setq op-pos (- js2-token-beg pos)) ; relative
- (if (= (js2-peek-token) js2-YIELD)
- (js2-report-error "msg.yield.parenthesized"))
- (setq right (js2-parse-assign-expr)
- left pn
- pn (make-js2-infix-node :type js2-COMMA
- :pos pos
- :len (- js2-ts-cursor pos)
- :op-pos op-pos
- :left left
- :right right))
- (js2-node-add-children pn left right))
- pn))
-
-(defun js2-parse-assign-expr ()
- (let ((tt (js2-peek-token))
- (pos js2-token-beg)
- pn
- left
- right
- op-pos)
- (if (= tt js2-YIELD)
- (js2-parse-return-or-yield tt t)
- ;; not yield - parse assignment expression
- (setq pn (js2-parse-cond-expr)
- tt (js2-peek-token))
- (when (and (<= js2-first-assign tt)
- (<= tt js2-last-assign))
- (js2-consume-token)
- (setq op-pos (- js2-token-beg pos) ; relative
- left pn
- right (js2-parse-assign-expr)
- pn (make-js2-assign-node :type tt
- :pos pos
- :len (- (js2-node-end right) pos)
- :op-pos op-pos
- :left left
- :right right))
- (when js2-parse-ide-mode
- (js2-highlight-assign-targets pn left right)
- (if (or (js2-function-node-p right)
- (js2-object-node-p right))
- (js2-record-imenu-functions right left)))
- ;; do this last so ide checks above can use absolute positions
- (js2-node-add-children pn left right))
- pn)))
-
-(defun js2-parse-cond-expr ()
- (let ((pos js2-token-beg)
- (pn (js2-parse-or-expr))
- test-expr
- if-true
- if-false
- q-pos
- c-pos)
- (when (js2-match-token js2-HOOK)
- (setq q-pos (- js2-token-beg pos)
- if-true (js2-parse-assign-expr))
- (js2-must-match js2-COLON "msg.no.colon.cond")
- (setq c-pos (- js2-token-beg pos)
- if-false (js2-parse-assign-expr)
- test-expr pn
- pn (make-js2-cond-node :pos pos
- :len (- (js2-node-end if-false) pos)
- :test-expr test-expr
- :true-expr if-true
- :false-expr if-false
- :q-pos q-pos
- :c-pos c-pos))
- (js2-node-add-children pn test-expr if-true if-false))
- pn))
-
-(defun js2-make-binary (type left parser)
- "Helper for constructing a binary-operator AST node.
-LEFT is the left-side-expression, already parsed, and the
-binary operator should have just been matched.
-PARSER is a function to call to parse the right operand,
-or a `js2-node' struct if it has already been parsed."
- (let* ((pos (js2-node-pos left))
- (op-pos (- js2-token-beg pos))
- (right (if (js2-node-p parser)
- parser
- (funcall parser)))
- (pn (make-js2-infix-node :type type
- :pos pos
- :len (- (js2-node-end right) pos)
- :op-pos op-pos
- :left left
- :right right)))
- (js2-node-add-children pn left right)
- pn))
-
-(defun js2-parse-or-expr ()
- (let ((pn (js2-parse-and-expr)))
- (when (js2-match-token js2-OR)
- (setq pn (js2-make-binary js2-OR
- pn
- 'js2-parse-or-expr)))
- pn))
-
-(defun js2-parse-and-expr ()
- (let ((pn (js2-parse-bit-or-expr)))
- (when (js2-match-token js2-AND)
- (setq pn (js2-make-binary js2-AND
- pn
- 'js2-parse-and-expr)))
- pn))
-
-(defun js2-parse-bit-or-expr ()
- (let ((pn (js2-parse-bit-xor-expr)))
- (while (js2-match-token js2-BITOR)
- (setq pn (js2-make-binary js2-BITOR
- pn
- 'js2-parse-bit-xor-expr)))
- pn))
-
-(defun js2-parse-bit-xor-expr ()
- (let ((pn (js2-parse-bit-and-expr)))
- (while (js2-match-token js2-BITXOR)
- (setq pn (js2-make-binary js2-BITXOR
- pn
- 'js2-parse-bit-and-expr)))
- pn))
-
-(defun js2-parse-bit-and-expr ()
- (let ((pn (js2-parse-eq-expr)))
- (while (js2-match-token js2-BITAND)
- (setq pn (js2-make-binary js2-BITAND
- pn
- 'js2-parse-eq-expr)))
- pn))
-
-(defconst js2-parse-eq-ops
- (list js2-EQ js2-NE js2-SHEQ js2-SHNE))
-
-(defun js2-parse-eq-expr ()
- (let ((pn (js2-parse-rel-expr))
- tt)
- (while (memq (setq tt (js2-peek-token)) js2-parse-eq-ops)
- (js2-consume-token)
- (setq pn (js2-make-binary tt
- pn
- 'js2-parse-rel-expr)))
- pn))
-
-(defconst js2-parse-rel-ops
- (list js2-IN js2-INSTANCEOF js2-LE js2-LT js2-GE js2-GT))
-
-(defun js2-parse-rel-expr ()
- (let ((pn (js2-parse-shift-expr))
- (continue t)
- tt)
- (while continue
- (setq tt (js2-peek-token))
- (cond
- ((and js2-in-for-init (= tt js2-IN))
- (setq continue nil))
- ((memq tt js2-parse-rel-ops)
- (js2-consume-token)
- (setq pn (js2-make-binary tt pn 'js2-parse-shift-expr)))
- (t
- (setq continue nil))))
- pn))
-
-(defconst js2-parse-shift-ops
- (list js2-LSH js2-URSH js2-RSH))
-
-(defun js2-parse-shift-expr ()
- (let ((pn (js2-parse-add-expr))
- tt
- (continue t))
- (while continue
- (setq tt (js2-peek-token))
- (if (memq tt js2-parse-shift-ops)
- (progn
- (js2-consume-token)
- (setq pn (js2-make-binary tt pn 'js2-parse-add-expr)))
- (setq continue nil)))
- pn))
-
-(defun js2-parse-add-expr ()
- (let ((pn (js2-parse-mul-expr))
- tt
- (continue t))
- (while continue
- (setq tt (js2-peek-token))
- (if (or (= tt js2-ADD) (= tt js2-SUB))
- (progn
- (js2-consume-token)
- (setq pn (js2-make-binary tt pn 'js2-parse-mul-expr)))
- (setq continue nil)))
- pn))
-
-(defconst js2-parse-mul-ops
- (list js2-MUL js2-DIV js2-MOD))
-
-(defun js2-parse-mul-expr ()
- (let ((pn (js2-parse-unary-expr))
- tt
- (continue t))
- (while continue
- (setq tt (js2-peek-token))
- (if (memq tt js2-parse-mul-ops)
- (progn
- (js2-consume-token)
- (setq pn (js2-make-binary tt pn 'js2-parse-unary-expr)))
- (setq continue nil)))
- pn))
-
-(defsubst js2-make-unary (type parser &rest args)
- "Make a unary node of type TYPE.
-PARSER is either a node (for postfix operators) or a function to call
-to parse the operand (for prefix operators)."
- (let* ((pos js2-token-beg)
- (postfix (js2-node-p parser))
- (expr (if postfix
- parser
- (apply parser args)))
- end
- pn)
- (if postfix ; e.g. i++
- (setq pos (js2-node-pos expr)
- end js2-token-end)
- (setq end (js2-node-end expr)))
- (setq pn (make-js2-unary-node :type type
- :pos pos
- :len (- end pos)
- :operand expr))
- (js2-node-add-children pn expr)
- pn))
-
-(defconst js2-incrementable-node-types
- (list js2-NAME js2-GETPROP js2-GETELEM js2-GET_REF js2-CALL)
- "Node types that can be the operand of a ++ or -- operator.")
-
-(defsubst js2-check-bad-inc-dec (tt beg end unary)
- (unless (memq (js2-node-type (js2-unary-node-operand unary))
- js2-incrementable-node-types)
- (js2-report-error (if (= tt js2-INC)
- "msg.bad.incr"
- "msg.bad.decr")
- nil beg (- end beg))))
-
-(defun js2-parse-unary-expr ()
- (let ((tt (js2-peek-token))
- pn expr beg end)
- (cond
- ((or (= tt js2-VOID)
- (= tt js2-NOT)
- (= tt js2-BITNOT)
- (= tt js2-TYPEOF))
- (js2-consume-token)
- (js2-make-unary tt 'js2-parse-unary-expr))
- ((= tt js2-ADD)
- (js2-consume-token)
- ;; Convert to special POS token in decompiler and parse tree
- (js2-make-unary js2-POS 'js2-parse-unary-expr))
- ((= tt js2-SUB)
- (js2-consume-token)
- ;; Convert to special NEG token in decompiler and parse tree
- (js2-make-unary js2-NEG 'js2-parse-unary-expr))
- ((or (= tt js2-INC)
- (= tt js2-DEC))
- (js2-consume-token)
- (prog1
- (setq beg js2-token-beg
- end js2-token-end
- expr (js2-make-unary tt 'js2-parse-member-expr t))
- (js2-check-bad-inc-dec tt beg end expr)))
- ((= tt js2-DELPROP)
- (js2-consume-token)
- (js2-make-unary js2-DELPROP 'js2-parse-unary-expr))
- ((= tt js2-ERROR)
- (js2-consume-token)
- (make-js2-error-node)) ; try to continue
- ((and (= tt js2-LT)
- js2-compiler-xml-available)
- ;; XML stream encountered in expression.
- (js2-consume-token)
- (js2-parse-member-expr-tail t (js2-parse-xml-initializer)))
- (t
- (setq pn (js2-parse-member-expr t)
- ;; Don't look across a newline boundary for a postfix incop.
- tt (js2-peek-token-or-eol))
- (when (or (= tt js2-INC) (= tt js2-DEC))
- (js2-consume-token)
- (setf expr pn
- pn (js2-make-unary tt expr))
- (js2-node-set-prop pn 'postfix t)
- (js2-check-bad-inc-dec tt js2-token-beg js2-token-end pn))
- pn))))
-
-(defun js2-parse-xml-initializer ()
- "Parse an E4X XML initializer.
-I'm parsing it the way Rhino parses it, but without the tree-rewriting.
-Then I'll postprocess the result, depending on whether we're in IDE
-mode or codegen mode, and generate the appropriate rewritten AST.
-IDE mode uses a rich AST that models the XML structure. Codegen mode
-just concatenates everything and makes a new XML or XMLList out of it."
- (let ((tt (js2-get-first-xml-token))
- pn-xml
- pn
- expr
- kids
- expr-pos
- (continue t)
- (first-token t))
- (when (not (or (= tt js2-XML) (= tt js2-XMLEND)))
- (js2-report-error "msg.syntax"))
- (setq pn-xml (make-js2-xml-node))
- (while continue
- (if first-token
- (setq first-token nil)
- (setq tt (js2-get-next-xml-token)))
- (cond
- ;; js2-XML means we found a {expr} in the XML stream.
- ;; The js2-ts-string is the XML up to the left-curly.
- ((= tt js2-XML)
- (push (make-js2-string-node :pos js2-token-beg
- :len (- js2-ts-cursor js2-token-beg))
- kids)
- (js2-must-match js2-LC "msg.syntax")
- (setq expr-pos js2-ts-cursor
- expr (if (eq (js2-peek-token) js2-RC)
- (make-js2-empty-expr-node :pos expr-pos)
- (js2-parse-expr)))
- (js2-must-match js2-RC "msg.syntax")
- (setq pn (make-js2-xml-js-expr-node :pos (js2-node-pos expr)
- :len (js2-node-len expr)
- :expr expr))
- (js2-node-add-children pn expr)
- (push pn kids))
- ;; a js2-XMLEND token means we hit the final close-tag.
- ((= tt js2-XMLEND)
- (push (make-js2-string-node :pos js2-token-beg
- :len (- js2-ts-cursor js2-token-beg))
- kids)
- (dolist (kid (nreverse kids))
- (js2-block-node-push pn-xml kid))
- (setf (js2-node-len pn-xml) (- js2-ts-cursor
- (js2-node-pos pn-xml))
- continue nil))
- (t
- (js2-report-error "msg.syntax")
- (setq continue nil))))
- pn-xml))
-
-
-(defun js2-parse-argument-list ()
- "Parse an argument list and return it as a lisp list of nodes.
-Returns the list in reverse order. Consumes the right-paren token."
- (let (result)
- (unless (js2-match-token js2-RP)
- (loop do
- (if (= (js2-peek-token) js2-YIELD)
- (js2-report-error "msg.yield.parenthesized"))
- (push (js2-parse-assign-expr) result)
- while
- (js2-match-token js2-COMMA))
- (js2-must-match js2-RP "msg.no.paren.arg")
- result)))
-
-(defun js2-parse-member-expr (&optional allow-call-syntax)
- (let ((tt (js2-peek-token))
- pn
- pos
- target
- args
- beg
- end
- init
- tail)
- (if (/= tt js2-NEW)
- (setq pn (js2-parse-primary-expr))
- ;; parse a 'new' expression
- (js2-consume-token)
- (setq pos js2-token-beg
- beg pos
- target (js2-parse-member-expr)
- end (js2-node-end target)
- pn (make-js2-new-node :pos pos
- :target target
- :len (- end pos)))
- (js2-node-add-children pn target)
- (when (js2-match-token js2-LP)
- ;; Add the arguments to pn, if any are supplied.
- (setf beg pos ; start of "new" keyword
- pos js2-token-beg
- args (nreverse (js2-parse-argument-list))
- (js2-new-node-args pn) args
- end js2-token-end
- (js2-new-node-lp pn) (- pos beg)
- (js2-new-node-rp pn) (- end 1 beg))
- (apply #'js2-node-add-children pn args))
- (when (and js2-allow-rhino-new-expr-initializer
- (js2-match-token js2-LC))
- (setf init (js2-parse-object-literal)
- end (js2-node-end init)
- (js2-new-node-initializer pn) init)
- (js2-node-add-children pn init))
- (setf (js2-node-len pn) (- beg pos))) ; end outer if
- (js2-parse-member-expr-tail allow-call-syntax pn)))
-
-(defun js2-parse-member-expr-tail (allow-call-syntax pn)
- "Parse a chain of property/array accesses or function calls.
-Includes parsing for E4X operators like `..' and `.@'.
-If ALLOW-CALL-SYNTAX is nil, stops when we encounter a left-paren.
-Returns an expression tree that includes PN, the parent node."
- (let ((beg (js2-node-pos pn))
- tt
- (continue t))
- (while continue
- (setq tt (js2-peek-token))
- (cond
- ((or (= tt js2-DOT) (= tt js2-DOTDOT))
- (setq pn (js2-parse-property-access tt pn)))
- ((= tt js2-DOTQUERY)
- (setq pn (js2-parse-dot-query pn)))
- ((= tt js2-LB)
- (setq pn (js2-parse-element-get pn)))
- ((= tt js2-LP)
- (if allow-call-syntax
- (setq pn (js2-parse-function-call pn))
- (setq continue nil)))
- (t
- (setq continue nil))))
- (if (>= js2-highlight-level 2)
- (js2-parse-highlight-member-expr-node pn))
- pn))
-
-(defun js2-parse-dot-query (pn)
- "Parse a dot-query expression, e.g. foo.bar.(@name == 2)
-Last token parsed must be `js2-DOTQUERY'."
- (let ((pos (js2-node-pos pn))
- op-pos
- expr
- end)
- (js2-consume-token)
- (js2-must-have-xml)
- (js2-set-requires-activation)
- (setq op-pos js2-token-beg
- expr (js2-parse-expr)
- end (js2-node-end expr)
- pn (make-js2-xml-dot-query-node :left pn
- :pos pos
- :op-pos op-pos
- :right expr))
- (js2-node-add-children pn
- (js2-xml-dot-query-node-left pn)
- (js2-xml-dot-query-node-right pn))
- (if (js2-must-match js2-RP "msg.no.paren")
- (setf (js2-xml-dot-query-node-rp pn) js2-token-beg
- end js2-token-end))
- (setf (js2-node-len pn) (- end pos))
- pn))
-
-(defun js2-parse-element-get (pn)
- "Parse an element-get expression, e.g. foo[bar].
-Last token parsed must be `js2-RB'."
- (let ((lb js2-token-beg)
- (pos (js2-node-pos pn))
- rb
- expr)
- (js2-consume-token)
- (setq expr (js2-parse-expr))
- (if (js2-must-match js2-RB "msg.no.bracket.index")
- (setq rb js2-token-beg))
- (setq pn (make-js2-elem-get-node :target pn
- :pos pos
- :element expr
- :lb (js2-relpos lb pos)
- :rb (js2-relpos rb pos)
- :len (- js2-token-end pos)))
- (js2-node-add-children pn
- (js2-elem-get-node-target pn)
- (js2-elem-get-node-element pn))
- pn))
-
-(defun js2-parse-function-call (pn)
- (let (args
- (pos (js2-node-pos pn)))
- (js2-consume-token)
- (setq pn (make-js2-call-node :pos pos
- :target pn
- :lp (- js2-token-beg pos)))
- (js2-node-add-children pn (js2-call-node-target pn))
- ;; Add the arguments to pn, if any are supplied.
- (setf args (nreverse (js2-parse-argument-list))
- (js2-call-node-rp pn) (- js2-token-beg pos)
- (js2-call-node-args pn) args)
- (apply #'js2-node-add-children pn args)
- (setf (js2-node-len pn) (- js2-ts-cursor pos))
- pn))
-
-(defun js2-parse-property-access (tt pn)
- "Parse a property access, XML descendants access, or XML attr access."
- (let ((member-type-flags 0)
- (dot-pos js2-token-beg)
- (dot-len (if (= tt js2-DOTDOT) 2 1))
- name
- ref ; right side of . or .. operator
- result)
- (js2-consume-token)
- (when (= tt js2-DOTDOT)
- (js2-must-have-xml)
- (setq member-type-flags js2-descendants-flag))
- (if (not js2-compiler-xml-available)
- (progn
- (js2-must-match-prop-name "msg.no.name.after.dot")
- (setq name (js2-create-name-node t js2-GETPROP)
- result (make-js2-prop-get-node :left pn
- :pos js2-token-beg
- :right name
- :len (- js2-token-end
- js2-token-beg)))
- (js2-node-add-children result pn name)
- result)
- ;; otherwise look for XML operators
- (setf result (if (= tt js2-DOT)
- (make-js2-prop-get-node)
- (make-js2-infix-node :type js2-DOTDOT))
- (js2-node-pos result) (js2-node-pos pn)
- (js2-infix-node-op-pos result) dot-pos
- (js2-infix-node-left result) pn ; do this after setting position
- tt (js2-next-token))
- (cond
- ;; needed for generator.throw()
- ((= tt js2-THROW)
- (js2-save-name-token-data js2-token-beg "throw")
- (setq ref (js2-parse-property-name nil js2-ts-string
member-type-flags)))
- ;; handles: name, ns::name, ns::*, ns::[expr]
- ((js2-valid-prop-name-token tt)
- (setq ref (js2-parse-property-name -1 js2-ts-string
member-type-flags)))
- ;; handles: *, *::name, *::*, *::[expr]
- ((= tt js2-MUL)
- (js2-save-name-token-data js2-token-beg "*")
- (setq ref (js2-parse-property-name nil "*" member-type-flags)))
- ;; handles: '@attr', '@ns::attr', '@ns::*', '@ns::[expr]', etc.
- ((= tt js2-XMLATTR)
- (setq result (js2-parse-attribute-access)))
- (t
- (js2-report-error "msg.no.name.after.dot" nil dot-pos dot-len)))
- (if ref
- (setf (js2-node-len result) (- (js2-node-end ref)
- (js2-node-pos result))
- (js2-infix-node-right result) ref))
- (if (js2-infix-node-p result)
- (js2-node-add-children result
- (js2-infix-node-left result)
- (js2-infix-node-right result)))
- result)))
-
-(defun js2-parse-attribute-access ()
- "Parse an E4X XML attribute expression.
-This includes expressions of the forms:
-
- @attr @ns::attr @ns::*
- @* @*::attr @*::*
- @[expr] @*::[expr] @ns::[expr]
-
-Called if we peeked an '@' token."
- (let ((tt (js2-next-token))
- (at-pos js2-token-beg))
- (cond
- ;; handles: @name, @ns::name, @ns::*, @ns::[expr]
- ((js2-valid-prop-name-token tt)
- (js2-parse-property-name at-pos js2-ts-string 0))
- ;; handles: @*, @*::name, @*::*, @*::[expr]
- ((= tt js2-MUL)
- (js2-save-name-token-data js2-token-beg "*")
- (js2-parse-property-name js2-token-beg "*" 0))
- ;; handles @[expr]
- ((= tt js2-LB)
- (js2-parse-xml-elem-ref at-pos))
- (t
- (js2-report-error "msg.no.name.after.xmlAttr")
- ;; Avoid cascaded errors that happen if we make an error node here.
- (js2-save-name-token-data js2-token-beg "")
- (js2-parse-property-name js2-token-beg "" 0)))))
-
-(defun js2-parse-property-name (at-pos s member-type-flags)
- "Check if :: follows name in which case it becomes qualified name.
-
-AT-POS is a natural number if we just read an '@' token, else nil.
-S is the name or string that was matched: an identifier, 'throw' or '*'.
-MEMBER-TYPE-FLAGS is a bit set tracking whether we're a '.' or '..' child.
-
-Returns a `js2-xml-ref-node' if it's an attribute access, a child of a '..'
-operator, or the name is followed by ::. For a plain name, returns a
-`js2-name-node'. Returns a `js2-error-node' for malformed XML expressions."
- (let ((pos (or at-pos js2-token-beg))
- colon-pos
- (name (js2-create-name-node t js2-current-token))
- ns
- tt
- ref
- pn)
- (catch 'return
- (when (js2-match-token js2-COLONCOLON)
- (setq ns name
- colon-pos js2-token-beg
- tt (js2-next-token))
- (cond
- ;; handles name::name
- ((js2-valid-prop-name-token tt)
- (setq name (js2-create-name-node)))
- ;; handles name::*
- ((= tt js2-MUL)
- (js2-save-name-token-data js2-token-beg "*")
- (setq name (js2-create-name-node)))
- ;; handles name::[expr]
- ((= tt js2-LB)
- (throw 'return (js2-parse-xml-elem-ref at-pos ns colon-pos)))
- (t
- (js2-report-error "msg.no.name.after.coloncolon"))))
- (if (and (null ns) (zerop member-type-flags))
- name
- (prog1
- (setq pn
- (make-js2-xml-prop-ref-node :pos pos
- :len (- (js2-node-end name) pos)
- :at-pos at-pos
- :colon-pos colon-pos
- :propname name))
- (js2-node-add-children pn name))))))
-
-(defun js2-parse-xml-elem-ref (at-pos &optional namespace colon-pos)
- "Parse the [expr] portion of an xml element reference.
-For instance, @[expr], @*::[expr], or ns::[expr]."
- (let* ((lb js2-token-beg)
- (pos (or at-pos lb))
- rb
- (expr (js2-parse-expr))
- (end (js2-node-end expr))
- pn)
- (if (js2-must-match js2-RB "msg.no.bracket.index")
- (setq rb js2-token-beg
- end js2-token-end))
- (prog1
- (setq pn
- (make-js2-xml-elem-ref-node :pos pos
- :len (- end pos)
- :namespace namespace
- :colon-pos colon-pos
- :at-pos at-pos
- :expr expr
- :lb (js2-relpos lb pos)
- :rb (js2-relpos rb pos)))
- (js2-node-add-children pn namespace expr))))
-
-(defun js2-parse-primary-expr ()
- "Parses a literal (leaf) expression of some sort.
-Includes complex literals such as functions, object-literals,
-array-literals, array comprehensions and regular expressions."
- (let ((tt-flagged (js2-next-flagged-token))
- pn ; parent node (usually return value)
- tt
- px-pos ; paren-expr pos
- len
- flags ; regexp flags
- expr)
- (setq tt js2-current-token)
- (cond
- ((= tt js2-FUNCTION)
- (js2-parse-function 'FUNCTION_EXPRESSION))
- ((= tt js2-LB)
- (js2-parse-array-literal))
- ((= tt js2-LC)
- (js2-parse-object-literal))
- ((= tt js2-LET)
- (js2-parse-let js2-token-beg))
- ((= tt js2-LP)
- (setq px-pos js2-token-beg
- expr (js2-parse-expr))
- (js2-must-match js2-RP "msg.no.paren")
- (setq pn (make-js2-paren-node :pos px-pos
- :expr expr
- :len (- js2-token-end px-pos)))
- (js2-node-add-children pn (js2-paren-node-expr pn))
- pn)
- ((= tt js2-XMLATTR)
- (js2-must-have-xml)
- (js2-parse-attribute-access))
- ((= tt js2-NAME)
- (js2-parse-name tt-flagged tt))
- ((= tt js2-NUMBER)
- (make-js2-number-node))
- ((= tt js2-STRING)
- (prog1
- (make-js2-string-node)
- (js2-record-face 'font-lock-string-face)))
- ((or (= tt js2-DIV) (= tt js2-ASSIGN_DIV))
- ;; Got / or /= which in this context means a regexp literal
- (setq px-pos js2-token-beg)
- (js2-read-regexp tt)
- (setq flags js2-ts-regexp-flags
- js2-ts-regexp-flags nil)
- (prog1
- (make-js2-regexp-node :pos px-pos
- :len (- js2-ts-cursor px-pos)
- :value js2-ts-string
- :flags flags)
- (js2-set-face px-pos js2-ts-cursor 'font-lock-string-face 'record)
- (put-text-property px-pos js2-ts-cursor 'syntax-table '(2))))
- ((or (= tt js2-NULL)
- (= tt js2-THIS)
- (= tt js2-FALSE)
- (= tt js2-TRUE))
- (make-js2-keyword-node :type tt))
- ((= tt js2-RESERVED)
- (js2-report-error "msg.reserved.id")
- (make-js2-name-node))
- ((= tt js2-ERROR)
- ;; the scanner or one of its subroutines reported the error.
- (make-js2-error-node))
- ((= tt js2-EOF)
- (setq px-pos (point-at-bol)
- len (- js2-ts-cursor px-pos))
- (js2-report-error "msg.unexpected.eof" nil px-pos len)
- (make-js2-error-node :pos px-pos :len len))
- (t
- (js2-report-error "msg.syntax")
- (make-js2-error-node)))))
-
-(defun js2-parse-name (tt-flagged tt)
- (let ((name js2-ts-string)
- (name-pos js2-token-beg))
- (if (and (js2-flag-set-p tt-flagged js2-ti-check-label)
- (= (js2-peek-token) js2-COLON))
- (prog1
- ;; Do not consume colon, it is used as unwind indicator
- ;; to return to statementHelper.
- (make-js2-label-node :pos name-pos
- :len (- js2-token-end name-pos)
- :name name)
- (js2-set-face name-pos
- js2-token-end
- 'font-lock-variable-name-face 'record))
- ;; Otherwise not a label, just a name. Unfortunately peeking
- ;; the next token to check for a colon has biffed js2-token-beg
- ;; and js2-token-end. We store the name's bounds in buffer vars
- ;; and `js2-create-name-node' uses them.
- (js2-save-name-token-data name-pos name)
- (if js2-compiler-xml-available
- (js2-parse-property-name nil name 0)
- (js2-create-name-node 'check-activation)))))
-
-(defsubst js2-parse-warn-trailing-comma (msg pos elems comma-pos)
- (js2-add-strict-warning
- msg nil
- ;; back up from comma to beginning of line or array/objlit
- (max (if elems
- (js2-node-pos (car elems))
- pos)
- (save-excursion
- (goto-char comma-pos)
- (back-to-indentation)
- (point)))
- comma-pos))
-
-(defun js2-parse-array-literal ()
- (let ((pos js2-token-beg)
- (end js2-token-end)
- (after-lb-or-comma t)
- after-comma
- tt
- elems
- pn
- (continue t))
- (while continue
- (setq tt (js2-peek-token))
- (cond
- ;; comma
- ((= tt js2-COMMA)
- (js2-consume-token)
- (setq after-comma js2-token-end)
- (if (not after-lb-or-comma)
- (setq after-lb-or-comma t)
- (push nil elems)))
- ;; end of array
- ((or (= tt js2-RB)
- (= tt js2-EOF)) ; prevent infinite loop
- (if (= tt js2-EOF)
- (js2-report-error "msg.no.bracket.arg" nil pos)
- (js2-consume-token))
- (setq continue nil
- end js2-token-end
- pn (make-js2-array-node :pos pos
- :len (- js2-ts-cursor pos)
- :elems (nreverse elems)))
- (apply #'js2-node-add-children pn (js2-array-node-elems pn))
- (when after-comma
- (js2-parse-warn-trailing-comma "msg.array.trailing.comma"
- pos elems after-comma)))
- ;; array comp
- ((and (>= js2-language-version 170)
- (= tt js2-FOR) ; check for array comprehension
- (not after-lb-or-comma) ; "for" can't follow a comma
- elems ; must have at least 1 element
- (not (cdr elems))) ; but no 2nd element
- (setf continue nil
- pn (js2-parse-array-comprehension (car elems) pos)))
- ;; another element
- (t
- (unless after-lb-or-comma
- (js2-report-error "msg.no.bracket.arg"))
- (push (js2-parse-assign-expr) elems)
- (setq after-lb-or-comma nil
- after-comma nil))))
- pn))
-
-(defun js2-parse-array-comprehension (expr pos)
- "Parse a JavaScript 1.7 Array Comprehension.
-EXPR is the first expression after the opening left-bracket.
-POS is the beginning of the LB token preceding EXPR.
-We should have just parsed the 'for' keyword before calling this function."
- (let (loops
- filter
- if-pos
- result)
- (while (= (js2-peek-token) js2-FOR)
- (push (js2-parse-array-comp-loop) loops))
- (when (= (js2-peek-token) js2-IF)
- (js2-consume-token)
- (setq if-pos (- js2-token-beg pos) ; relative
- filter (js2-parse-condition)))
- (js2-must-match js2-RB "msg.no.bracket.arg" pos)
- (setq result (make-js2-array-comp-node :pos pos
- :len (- js2-ts-cursor pos)
- :result expr
- :loops (nreverse loops)
- :filter (car filter)
- :lp (js2-relpos (second filter) pos)
- :rp (js2-relpos (third filter) pos)
- :if-pos if-pos))
- (apply #'js2-node-add-children result expr (car filter)
- (js2-array-comp-node-loops result))
- result))
-
-(defun js2-parse-array-comp-loop ()
- "Parse a 'for [each] (foo in bar)' expression in an Array comprehension.
-Last token peeked should be the initial FOR."
- (let ((pos js2-token-beg)
- (pn (make-js2-array-comp-loop-node))
- tt
- iter
- obj
- foreach-p
- in-pos
- each-pos
- lp
- rp)
- (assert (= (js2-next-token) js2-FOR)) ; consumes token
- (js2-push-scope pn)
- (unwind-protect
- (progn
- (when (js2-match-token js2-NAME)
- (if (string= js2-ts-string "each")
- (progn
- (setq foreach-p t
- each-pos (- js2-token-beg pos)) ; relative
- (js2-record-face 'font-lock-keyword-face))
- (js2-report-error "msg.no.paren.for")))
- (if (js2-must-match js2-LP "msg.no.paren.for")
- (setq lp (- js2-token-beg pos)))
- (setq tt (js2-peek-token))
- (cond
- ((or (= tt js2-LB)
- (= tt js2-LC))
- ;; handle destructuring assignment
- (setq iter (js2-parse-primary-expr)))
- ((js2-valid-prop-name-token tt)
- (js2-consume-token)
- (setq iter (js2-create-name-node)))
- (t
- (js2-report-error "msg.bad.var")))
- ;; Define as a let since we want the scope of the variable to
- ;; be restricted to the array comprehension
- (if (js2-name-node-p iter)
- (js2-define-symbol js2-LET (js2-name-node-name iter) pn t))
- (if (js2-must-match js2-IN "msg.in.after.for.name")
- (setq in-pos (- js2-token-beg pos)))
- (setq obj (js2-parse-expr))
- (if (js2-must-match js2-RP "msg.no.paren.for.ctrl")
- (setq rp (- js2-token-beg pos)))
- (setf (js2-node-pos pn) pos
- (js2-node-len pn) (- js2-ts-cursor pos)
- (js2-array-comp-loop-node-iterator pn) iter
- (js2-array-comp-loop-node-object pn) obj
- (js2-array-comp-loop-node-in-pos pn) in-pos
- (js2-array-comp-loop-node-each-pos pn) each-pos
- (js2-array-comp-loop-node-foreach-p pn) foreach-p
- (js2-array-comp-loop-node-lp pn) lp
- (js2-array-comp-loop-node-rp pn) rp)
- (js2-node-add-children pn iter obj))
- (js2-pop-scope))
- pn))
-
-(defun js2-parse-object-literal ()
- (let ((pos js2-token-beg)
- tt
- elems
- result
- after-comma
- (continue t))
- (while continue
- (setq tt (js2-peek-token))
- (cond
- ;; {foo: ...}, {'foo': ...}, {get foo() {...}}, or {set foo(x) {...}}
- ((or (js2-valid-prop-name-token tt)
- (= tt js2-STRING))
- (setq after-comma nil
- result (js2-parse-named-prop tt))
- (if (and (null result)
- (not js2-recover-from-parse-errors))
- (setq continue nil)
- (push result elems)))
- ;; {12: x} or {10.7: x}
- ((= tt js2-NUMBER)
- (js2-consume-token)
- (setq after-comma nil)
- (push (js2-parse-plain-property (make-js2-number-node)) elems))
- ;; trailing comma
- ((= tt js2-RC)
- (setq continue nil)
- (if after-comma
- (js2-parse-warn-trailing-comma "msg.extra.trailing.comma"
- pos elems after-comma)))
- (t
- (js2-report-error "msg.bad.prop")
- (unless js2-recover-from-parse-errors
- (setq continue nil)))) ; end switch
- (if (js2-match-token js2-COMMA)
- (setq after-comma js2-token-end)
- (setq continue nil))) ; end loop
- (js2-must-match js2-RC "msg.no.brace.prop")
- (setq result (make-js2-object-node :pos pos
- :len (- js2-ts-cursor pos)
- :elems (nreverse elems)))
- (apply #'js2-node-add-children result (js2-object-node-elems result))
- result))
-
-(defun js2-parse-named-prop (tt)
- "Parse a name, string, or getter/setter object property."
- (js2-consume-token)
- (let ((string-prop (and (= tt js2-STRING)
- (make-js2-string-node)))
- expr
- (ppos js2-token-beg)
- (pend js2-token-end)
- (name (js2-create-name-node))
- (prop js2-ts-string))
- (if (and (= tt js2-NAME)
- (= (js2-peek-token) js2-NAME)
- (or (string= prop "get")
- (string= prop "set")))
- (progn
- ;; getter/setter prop
- (js2-consume-token)
- (js2-set-face ppos pend 'font-lock-keyword-face 'record) ; get/set
- (js2-record-face 'font-lock-function-name-face) ; for peeked
name
- (setq name (js2-create-name-node)) ; discard get/set & use peeked
name
- (js2-parse-getter-setter-prop ppos name (string= prop "get")))
- ;; regular prop
- (prog1
- (setq expr (js2-parse-plain-property (or string-prop name)))
- (js2-set-face ppos pend
- (if (js2-function-node-p
- (js2-object-prop-node-right expr))
- 'font-lock-function-name-face
- 'font-lock-variable-name-face)
- 'record)))))
-
-(defun js2-parse-plain-property (prop)
- "Parse a non-getter/setter property in an object literal.
-PROP is the node representing the property: a number, name or string."
- (js2-must-match js2-COLON "msg.no.colon.prop")
- (let* ((pos (js2-node-pos prop))
- (colon (- js2-token-beg pos))
- (expr (js2-parse-assign-expr))
- (result (make-js2-object-prop-node
- :pos pos
- ;; don't include last consumed token in length
- :len (- (+ (js2-node-pos expr)
- (js2-node-len expr))
- pos)
- :left prop
- :right expr
- :op-pos colon)))
- (js2-node-add-children result prop expr)
- result))
-
-(defun js2-parse-getter-setter-prop (pos prop get-p)
- "Parse getter or setter property in an object literal.
-JavaScript syntax is:
-
- { get foo() {...}, set foo(x) {...} }
-
-POS is the start position of the `get' or `set' keyword.
-PROP is the `js2-name-node' representing the property name.
-GET-P is non-nil if the keyword was `get'."
- (let ((type (if get-p js2-GET js2-SET))
- result
- end
- (fn (js2-parse-function 'FUNCTION_EXPRESSION)))
- ;; it has to be an anonymous function, as we already parsed the name
- (if (/= (js2-node-type fn) js2-FUNCTION)
- (js2-report-error "msg.bad.prop")
- (if (plusp (length (js2-function-name fn)))
- (js2-report-error "msg.bad.prop")))
- (js2-node-set-prop fn 'GETTER_SETTER type) ; for codegen
- (setq end (js2-node-end fn)
- result (make-js2-getter-setter-node :type type
- :pos pos
- :len (- end pos)
- :left prop
- :right fn))
- (js2-node-add-children result prop fn)
- result))
-
-(defun js2-create-name-node (&optional check-activation-p token)
- "Create a name node using the token info from last scanned name.
-In some cases we need to either synthesize a name node, or we lost
-the name token information by peeking. If the TOKEN parameter is
-not `js2-NAME', then we use the token info saved in instance vars."
- (let ((beg js2-token-beg)
- (s js2-ts-string)
- name)
- (when (/= js2-current-token js2-NAME)
- (setq beg (or js2-prev-name-token-start js2-ts-cursor)
- s js2-prev-name-token-string
- js2-prev-name-token-start nil
- js2-prev-name-token-string nil))
- (setq name (make-js2-name-node :pos beg
- :name s
- :len (length s)))
- (if check-activation-p
- (js2-check-activation-name s (or token js2-NAME)))
- name))
-
-;;; Indentation support
-
-;; This indenter is based on Karl Landström's "javascript.el" indenter.
-;; Karl cleverly deduces that the desired indentation level is often a
-;; function of paren/bracket/brace nesting depth, which can be determined
-;; quickly via the built-in `parse-partial-sexp' function. His indenter
-;; then does some equally clever checks to see if we're in the context of a
-;; substatement of a possibly braceless statement keyword such as if, while,
-;; or finally. This approach yields pretty good results.
-
-;; The indenter is often "wrong", however, and needs to be overridden.
-;; The right long-term solution is probably to emulate (or integrate
-;; with) cc-engine, but it's a nontrivial amount of coding. Even when a
-;; parse tree from `js2-parse' is present, which is not true at the
-;; moment the user is typing, computing indentation is still thousands
-;; of lines of code to handle every possible syntactic edge case.
-
-;; In the meantime, the compromise solution is that we offer a "bounce
-;; indenter", configured with `js2-bounce-indent-p', which cycles the
-;; current line indent among various likely guess points. This approach
-;; is far from perfect, but should at least make it slightly easier to
-;; move the line towards its desired indentation when manually
-;; overriding Karl's heuristic nesting guesser.
-
-;; I've made miscellaneous tweaks to Karl's code to handle some Ecma
-;; extensions such as `let' and Array comprehensions. Major kudos to
-;; Karl for coming up with the initial approach, which packs a lot of
-;; punch for so little code.
-
-(defconst js-possibly-braceless-keyword-re
- (regexp-opt
- '("catch" "do" "else" "finally" "for" "if" "try" "while" "with" "let")
- 'words)
- "Regular expression matching keywords that are optionally
-followed by an opening brace.")
-
-(defconst js-indent-operator-re
- (concat "[-+*/%<>=&^|?:.]\\([^-+*/]\\|$\\)\\|"
- (regexp-opt '("in" "instanceof") 'words))
- "Regular expression matching operators that affect indentation
-of continued expressions.")
-
-;; This function has horrible results if you're typing an array
-;; such as [[1, 2], [3, 4], [5, 6]]. Bounce indenting -really- sucks
-;; in conjunction with electric-indent, so just disabling it.
-(defsubst js2-code-at-bol-p ()
- "Return t if the first character on line is non-whitespace."
- nil)
-
-(defun js2-insert-and-indent (key)
- "Run command bound to key and indent current line. Runs the command
-bound to KEY in the global keymap and indents the current line."
- (interactive (list (this-command-keys)))
- (let ((cmd (lookup-key (current-global-map) key)))
- (if (commandp cmd)
- (call-interactively cmd)))
- ;; don't do the electric keys inside comments or strings,
- ;; and don't do bounce-indent with them.
- (let ((parse-state (parse-partial-sexp (point-min) (point)))
- (js2-bounce-indent-p (js2-code-at-bol-p)))
- (unless (or (nth 3 parse-state)
- (nth 4 parse-state))
- (indent-according-to-mode))))
-
-(defun js-re-search-forward-inner (regexp &optional bound count)
- "Auxiliary function for `js-re-search-forward'."
- (let ((parse)
- (saved-point (point-min)))
- (while (> count 0)
- (re-search-forward regexp bound)
- (setq parse (parse-partial-sexp saved-point (point)))
- (cond ((nth 3 parse)
- (re-search-forward
- (concat "\\([^\\]\\|^\\)" (string (nth 3 parse)))
- (save-excursion (end-of-line) (point)) t))
- ((nth 7 parse)
- (forward-line))
- ((or (nth 4 parse)
- (and (eq (char-before) ?\/) (eq (char-after) ?\*)))
- (re-search-forward "\\*/"))
- (t
- (setq count (1- count))))
- (setq saved-point (point))))
- (point))
-
-(defun js-re-search-forward (regexp &optional bound noerror count)
- "Search forward but ignore strings and comments. Invokes
-`re-search-forward' but treats the buffer as if strings and
-comments have been removed."
- (let ((saved-point (point))
- (search-expr
- (cond ((null count)
- '(js-re-search-forward-inner regexp bound 1))
- ((< count 0)
- '(js-re-search-backward-inner regexp bound (- count)))
- ((> count 0)
- '(js-re-search-forward-inner regexp bound count)))))
- (condition-case err
- (eval search-expr)
- (search-failed
- (goto-char saved-point)
- (unless noerror
- (error (error-message-string err)))))))
-
-(defun js-re-search-backward-inner (regexp &optional bound count)
- "Auxiliary function for `js-re-search-backward'."
- (let ((parse)
- (saved-point (point-min)))
- (while (> count 0)
- (re-search-backward regexp bound)
- (setq parse (parse-partial-sexp saved-point (point)))
- (cond ((nth 3 parse)
- (re-search-backward
- (concat "\\([^\\]\\|^\\)" (string (nth 3 parse)))
- (save-excursion (beginning-of-line) (point)) t))
- ((nth 7 parse)
- (goto-char (nth 8 parse)))
- ((or (nth 4 parse)
- (and (eq (char-before) ?/) (eq (char-after) ?*)))
- (re-search-backward "/\\*"))
- (t
- (setq count (1- count))))))
- (point))
-
-(defun js-re-search-backward (regexp &optional bound noerror count)
- "Search backward but ignore strings and comments. Invokes
-`re-search-backward' but treats the buffer as if strings and
-comments have been removed."
- (let ((saved-point (point))
- (search-expr
- (cond ((null count)
- '(js-re-search-backward-inner regexp bound 1))
- ((< count 0)
- '(js-re-search-forward-inner regexp bound (- count)))
- ((> count 0)
- '(js-re-search-backward-inner regexp bound count)))))
- (condition-case err
- (eval search-expr)
- (search-failed
- (goto-char saved-point)
- (unless noerror
- (error (error-message-string err)))))))
-
-(defun js-looking-at-operator-p ()
- "Return non-nil if text after point is an operator (that is not
-a comma)."
- (save-match-data
- (and (looking-at js-indent-operator-re)
- (or (not (looking-at ":"))
- (save-excursion
- (and (js-re-search-backward "[?:{]\\|\\<case\\>" nil t)
- (looking-at "?")))))))
-
-(defun js-continued-expression-p ()
- "Returns non-nil if the current line continues an expression."
- (save-excursion
- (back-to-indentation)
- (or (js-looking-at-operator-p)
- (and (js-re-search-backward "\n" nil t)
- (progn
- (skip-chars-backward " \t")
- (backward-char)
- (and (js-looking-at-operator-p)
- (and (progn (backward-char)
- (not (looking-at
"\\*\\|++\\|--\\|/[/*]"))))))))))
-
-(defun js-end-of-do-while-loop-p ()
- "Returns non-nil if word after point is `while' of a do-while
-statement, else returns nil. A braceless do-while statement
-spanning several lines requires that the start of the loop is
-indented to the same column as the current line."
- (interactive)
- (save-excursion
- (save-match-data
- (when (looking-at "\\s-*\\<while\\>")
- (if (save-excursion
- (skip-chars-backward "[ \t\n]*}")
- (looking-at "[ \t\n]*}"))
- (save-excursion
- (backward-list) (backward-word 1) (looking-at "\\<do\\>"))
- (js-re-search-backward "\\<do\\>" (point-at-bol) t)
- (or (looking-at "\\<do\\>")
- (let ((saved-indent (current-indentation)))
- (while (and (js-re-search-backward "^[ \t]*\\<" nil t)
- (/= (current-indentation) saved-indent)))
- (and (looking-at "[ \t]*\\<do\\>")
- (not (js-re-search-forward
- "\\<while\\>" (point-at-eol) t))
- (= (current-indentation) saved-indent)))))))))
-
-(defun js-ctrl-statement-indentation ()
- "Returns the proper indentation of the current line if it
-starts the body of a control statement without braces, else
-returns nil."
- (let (forward-sexp-function) ; temporarily unbind it
- (save-excursion
- (back-to-indentation)
- (when (save-excursion
- (and (not (js2-same-line (point-min)))
- (not (looking-at "{"))
- (js-re-search-backward "[[:graph:]]" nil t)
- (not (looking-at "[{([]"))
- (progn
- (forward-char)
- ;; scan-sexps sometimes throws an error
- (ignore-errors (backward-sexp))
- (when (looking-at "(") (backward-word 1))
- (and (save-excursion
- (skip-chars-backward " \t}" (point-at-bol))
- (bolp))
- (looking-at js-possibly-braceless-keyword-re)
- (not (js-end-of-do-while-loop-p))))))
- (save-excursion
- (goto-char (match-beginning 0))
- (+ (current-indentation) js2-basic-offset))))))
-
-(defun js2-indent-in-array-comp (parse-status)
- "Return non-nil if we think we're in an array comprehension.
-In particular, return the buffer position of the first `for' kwd."
- (let ((end (point)))
- (when (nth 1 parse-status)
- (save-excursion
- (goto-char (nth 1 parse-status))
- (when (looking-at "\\[")
- (forward-char 1)
- (js2-forward-sws)
- (if (looking-at "[[{]")
- (let (forward-sexp-function) ; use lisp version
- (forward-sexp) ; skip destructuring form
- (js2-forward-sws)
- (if (and (/= (char-after) ?,) ; regular array
- (looking-at "for"))
- (match-beginning 0)))
- ;; to skip arbitrary expressions we need the parser,
- ;; so we'll just guess at it.
- (if (re-search-forward "[^,]* \\(for\\) " end t)
- (match-beginning 1))))))))
-
-(defun js2-array-comp-indentation (parse-status for-kwd)
- (if (js2-same-line for-kwd)
- ;; first continuation line
- (save-excursion
- (goto-char (nth 1 parse-status))
- (forward-char 1)
- (skip-chars-forward " \t")
- (current-column))
- (save-excursion
- (goto-char for-kwd)
- (current-column))))
-
-(defun js-proper-indentation (parse-status)
- "Return the proper indentation for the current line."
- (save-excursion
- (back-to-indentation)
- (let ((ctrl-stmt-indent (js-ctrl-statement-indentation))
- (same-indent-p (looking-at "[]})]\\|\\<case\\>\\|\\<default\\>"))
- (continued-expr-p (js-continued-expression-p))
- (bracket (nth 1 parse-status))
- beg)
- (cond
- ;; indent array comprehension continuation lines specially
- ((and bracket
- (not (js2-same-line bracket))
- (setq beg (js2-indent-in-array-comp parse-status))
- (>= (point) (save-excursion
- (goto-char beg)
- (point-at-bol)))) ; at or after first loop?
- (js2-array-comp-indentation parse-status beg))
-
- (ctrl-stmt-indent)
-
- (bracket
- (goto-char bracket)
- (cond
- ((looking-at "[({[][ \t]*\\(/[/*]\\|$\\)")
- (let ((p (parse-partial-sexp (point-at-bol) (point))))
- (when (save-excursion (skip-chars-backward " \t)")
- (looking-at ")"))
- (backward-list))
- (if (nth 1 p)
- (progn (goto-char (1+ (nth 1 p)))
- (skip-chars-forward " \t"))
- (back-to-indentation))
- (cond (same-indent-p
- (current-column))
- (continued-expr-p
- (+ (current-column) (* 2 js2-basic-offset)))
- (t
- (+ (current-column) js2-basic-offset)))))
- (t
- (unless same-indent-p
- (forward-char)
- (skip-chars-forward " \t"))
- (current-column))))
-
- (continued-expr-p js2-basic-offset)
- (t 0)))))
-
-(defun js2-lineup-comment (parse-status)
- "Indent a multi-line block comment continuation line."
- (let* ((beg (nth 8 parse-status))
- (first-line (js2-same-line beg))
- (offset (save-excursion
- (goto-char beg)
- (if (looking-at "/\\*")
- (+ 1 (current-column))
- 0))))
- (unless first-line
- (indent-line-to offset))))
-
-(defun js2-backward-sws ()
- "Move backward through whitespace and comments."
- (interactive)
- (while (forward-comment -1)))
-
-(defun js2-forward-sws ()
- "Move forward through whitespace and comments."
- (interactive)
- (while (forward-comment 1)))
-
-(defsubst js2-current-indent (&optional pos)
- "Return column of indentation on current line.
-If POS is non-nil, go to that point and return indentation for that line."
- (save-excursion
- (if pos
- (goto-char pos))
- (back-to-indentation)
- (current-column)))
-
-(defsubst js2-arglist-close ()
- "Return non-nil if we're on a line beginning with a close-paren/brace."
- (save-match-data
- (save-excursion
- (goto-char (point-at-bol))
- (js2-forward-sws)
- (looking-at "[])}]"))))
-
-(defsubst js2-indent-looks-like-label-p ()
- (goto-char (point-at-bol))
- (js2-forward-sws)
- (looking-at (concat js2-mode-identifier-re ":")))
-
-(defun js2-indent-in-objlit-p (parse-status)
- "Return non-nil if this looks like an object-literal entry."
- (let ((start (nth 1 parse-status)))
- (and
- start
- (save-excursion
- (and (zerop (forward-line -1))
- (not (< (point) start)) ; crossed a {} boundary
- (js2-indent-looks-like-label-p)))
- (save-excursion
- (js2-indent-looks-like-label-p)))))
-
-;; if prev line looks like foobar({ then we're passing an object
-;; literal to a function call, and people pretty much always want to
-;; de-dent back to the previous line, so move the 'basic-offset'
-;; position to the front.
-(defsubst js2-indent-objlit-arg-p (parse-status)
- (save-excursion
- (back-to-indentation)
- (js2-backward-sws)
- (and (eq (1- (point)) (nth 1 parse-status))
- (eq (char-before) ?{)
- (progn
- (forward-char -1)
- (skip-chars-backward " \t")
- (eq (char-before) ?\()))))
-
-(defsubst js2-indent-case-block-p ()
- (save-excursion
- (back-to-indentation)
- (js2-backward-sws)
- (goto-char (point-at-bol))
- (skip-chars-forward " \t")
- (save-match-data
- (looking-at "case\\s-.+:"))))
-
-(defsubst js2-syntax-bol ()
- "Return the point at the first non-whitespace char on the line.
-Returns `point-at-bol' if the line is empty."
- (save-excursion
- (beginning-of-line)
- (skip-chars-forward " \t")
- (point)))
-
-(defun js2-bounce-indent (normal-col parse-status)
- "Cycle among alternate computed indentation positions.
-PARSE-STATUS is the result of `parse-partial-sexp' from the beginning
-of the buffer to the current point. NORMAL-COL is the indentation
-column computed by the heuristic guesser based on current paren,
-bracket, brace and statement nesting."
- (let ((cur-indent (js2-current-indent))
- (old-buffer-undo-list buffer-undo-list)
- ;; Emacs 21 only has `count-lines', not `line-number-at-pos'
- (current-line (save-excursion
- (forward-line 0) ; move to bol
- (1+ (count-lines (point-min) (point)))))
- positions
- pos
- anchor
- arglist-cont
- same-indent
- prev-line-col
- basic-offset
- computed-pos)
- ;; temporarily don't record undo info, if user requested this
- (if js2-mode-indent-inhibit-undo
- (setq buffer-undo-list t))
- (unwind-protect
- (progn
- ;; first likely point: indent from beginning of previous code line
- (push (setq basic-offset
- (+ (save-excursion
- (back-to-indentation)
- (js2-backward-sws)
- (back-to-indentation)
- (setq prev-line-col (current-column)))
- js2-basic-offset))
- positions)
-
- ;; (first + epsilon) likely point: indent 2x from beginning of
- ;; previous code line. Some companies like this approach. Ahem.
- ;; Seriously, though -- 4-space indent for expression continuation
- ;; lines isn't a bad idea. We should eventually implement it
- ;; that way.
- (push (setq basic-offset
- (+ (save-excursion
- (back-to-indentation)
- (js2-backward-sws)
- (back-to-indentation)
- (setq prev-line-col (current-column)))
- (* 2 js2-basic-offset)))
- positions)
-
- ;; second likely point: indent from assign-expr RHS. This
- ;; is just a crude guess based on finding " = " on the previous
- ;; line containing actual code.
- (setq pos (save-excursion
- (save-match-data
- (forward-line -1)
- (goto-char (point-at-bol))
- (when (re-search-forward "\\s-+\\(=\\)\\s-+"
- (point-at-eol) t)
- (goto-char (match-end 1))
- (skip-chars-forward " \t\r\n")
- (current-column)))))
- (when pos
- (incf pos js2-basic-offset)
- (unless (member pos positions)
- (push pos positions)))
-
- ;; third likely point: same indent as previous line of code.
- ;; Make it the first likely point if we're not on an
- ;; arglist-close line and previous line ends in a comma, or
- ;; both this line and prev line look like object-literal
- ;; elements.
- (setq pos (save-excursion
- (goto-char (point-at-bol))
- (js2-backward-sws)
- (back-to-indentation)
- (prog1
- (current-column)
- ;; while we're here, look for trailing comma
- (if (save-excursion
- (goto-char (point-at-eol))
- (js2-backward-sws)
- (eq (char-before) ?,))
- (setq arglist-cont (1- (point)))))))
- (when pos
- (if (and (or arglist-cont
- (js2-indent-in-objlit-p parse-status))
- (not (js2-arglist-close)))
- (setq same-indent pos))
- (unless (member pos positions)
- (push pos positions)))
-
- ;; fourth likely point: first preceding code with less indentation
- ;; than the immediately preceding code line.
- (setq pos (save-excursion
- (js2-backward-sws)
- (back-to-indentation)
- (setq anchor (current-column))
- (while (and (zerop (forward-line -1))
- (>= (progn
- (back-to-indentation)
- (current-column))
- anchor)))
- (setq pos (current-column))))
- (unless (member pos positions)
- (push pos positions))
-
- ;; put nesting-heuristic position first in list, sort rest
- (setq positions (nreverse (sort positions '<)))
- (setq positions (cons normal-col (delete normal-col positions)))
-
- ;; comma-list continuation lines: prev line indent takes precedence
- (if same-indent
- (setq positions
- (cons same-indent
- (sort (delete same-indent positions) '<))))
-
- ;; common special cases where we want to indent in from previous line
- (if (or (js2-indent-case-block-p)
- (js2-indent-objlit-arg-p parse-status))
- (setq positions
- (cons basic-offset
- (delete basic-offset positions))))
-
- ;; record whether we're already sitting on one of the alternatives
- (setq pos (member cur-indent positions))
- (cond
- ;; case 0: we're one one of the alternatives and this is the
- ;; first time they've pressed TAB on this line (best-guess).
- ((and js2-mode-indent-ignore-first-tab
- pos
- ;; first time pressing TAB on this line?
- (not (eq js2-mode-last-indented-line current-line)))
- ;; do nothing
- (setq computed-pos nil))
- ;; case 1: only one computed position => use it
- ((null (cdr positions))
- (setq computed-pos 0))
- ;; case 2: not on any of the computed spots => use main spot
- ((not pos)
- (setq computed-pos 0))
- ;; case 3: on last position: cycle to first position
- ((null (cdr pos))
- (setq computed-pos 0))
- ;; case 4: on intermediate position: cycle to next position
- (t
- (setq computed-pos (js2-position (second pos) positions))))
-
- ;; see if any hooks want to indent; otherwise we do it
- (loop with result = nil
- for hook in js2-indent-hook
- while (null result)
- do
- (setq result (funcall hook positions computed-pos))
- finally do
- (unless (or result (null computed-pos))
- (indent-line-to (nth computed-pos positions)))))
-
- ;; finally
- (if js2-mode-indent-inhibit-undo
- (setq buffer-undo-list old-buffer-undo-list))
- ;; see commentary for `js2-mode-last-indented-line'
- (setq js2-mode-last-indented-line current-line))))
-
-(defsubst js2-1-line-comment-continuation-p ()
- "Return t if we're in a 1-line comment continuation.
-If so, we don't ever want to use bounce-indent."
- (save-excursion
- (save-match-data
- (and (progn
- (forward-line 0)
- (looking-at "\\s-*//"))
- (progn
- (forward-line -1)
- (forward-line 0)
- (when (looking-at "\\s-*$")
- (js2-backward-sws)
- (forward-line 0))
- (looking-at "\\s-*//"))))))
-
-(defun js2-indent-line ()
- "Indent the current line as JavaScript source text."
- (interactive)
- (let (parse-status
- current-indent
- offset
- indent-col
- moved
- ;; don't whine about errors/warnings when we're indenting.
- ;; This has to be set before calling parse-partial-sexp below.
- (inhibit-point-motion-hooks t))
- (setq parse-status (save-excursion
- (parse-partial-sexp (point-min)
- (point-at-bol)))
- offset (- (point) (save-excursion
- (back-to-indentation)
- (setq current-indent (current-column))
- (point))))
- (js2-with-underscore-as-word-syntax
- (if (nth 4 parse-status)
- (js2-lineup-comment parse-status)
- (setq indent-col (js-proper-indentation parse-status))
- ;; see comments below about js2-mode-last-indented-line
- (when
- (cond
- ;; bounce-indenting is disabled during electric-key indent.
- ;; It doesn't work well on first line of buffer.
- ((and js2-bounce-indent-p
- (not (js2-same-line (point-min)))
- (not (js2-1-line-comment-continuation-p)))
- (js2-bounce-indent indent-col parse-status)
- (setq moved t))
- ;; just indent to the guesser's likely spot
- ((/= current-indent indent-col)
- (indent-line-to indent-col)
- (setq moved t)))
- (when (and moved (plusp offset))
- (forward-char offset)))))))
-
-(defun js2-indent-region (start end)
- "Indent the region, but don't use bounce indenting."
- (let ((js2-bounce-indent-p nil)
- (indent-region-function nil))
- (indent-region start end nil))) ; nil for byte-compiler
-
-;;;###autoload (add-to-list 'auto-mode-alist '("\\.js$" . js2-mode))
-
-;;;###autoload
-(defun js2-mode ()
- "Major mode for editing JavaScript code."
- (interactive)
- (kill-all-local-variables)
- (set-syntax-table js2-mode-syntax-table)
- (use-local-map js2-mode-map)
- (setq major-mode 'js2-mode
- mode-name "JavaScript-IDE"
- comment-start "//" ; used by comment-region; don't change it
- comment-end "")
- (setq local-abbrev-table js2-mode-abbrev-table)
- (set (make-local-variable 'max-lisp-eval-depth)
- (max max-lisp-eval-depth 3000))
- (set (make-local-variable 'indent-line-function) #'js2-indent-line)
- (set (make-local-variable 'indent-region-function) #'js2-indent-region)
-
- ;; I tried an "improvement" to `c-fill-paragraph' that worked out badly
- ;; on most platforms other than the one I originally wrote it on. So it's
- ;; back to `c-fill-paragraph'. Still not perfect, though -- something to do
- ;; with our binding of the RET key inside comments: short lines stay short.
- (set (make-local-variable 'fill-paragraph-function) #'c-fill-paragraph)
-
- (set (make-local-variable 'before-save-hook) #'js2-before-save)
- (set (make-local-variable 'next-error-function) #'js2-next-error)
- (set (make-local-variable 'beginning-of-defun-function)
#'js2-beginning-of-defun)
- (set (make-local-variable 'end-of-defun-function) #'js2-end-of-defun)
- ;; we un-confuse `parse-partial-sexp' by setting syntax-table properties
- ;; for characters inside regexp literals.
- (set (make-local-variable 'parse-sexp-lookup-properties) t)
- ;; this is necessary to make `show-paren-function' work properly
- (set (make-local-variable 'parse-sexp-ignore-comments) t)
- ;; needed for M-x rgrep, among other things
- (put 'js2-mode 'find-tag-default-function #'js2-mode-find-tag)
-
- ;; some variables needed by cc-engine for paragraph-fill, etc.
- (setq c-buffer-is-cc-mode t
- c-comment-prefix-regexp js2-comment-prefix-regexp
- c-comment-start-regexp "/[*/]\\|\\s|"
- c-paragraph-start js2-paragraph-start
- c-paragraph-separate "$"
- comment-start-skip js2-comment-start-skip
- c-syntactic-ws-start js2-syntactic-ws-start
- c-syntactic-ws-end js2-syntactic-ws-end
- c-syntactic-eol js2-syntactic-eol)
-
- (setq js2-default-externs
- (append js2-ecma-262-externs
- (if js2-include-browser-externs
- js2-browser-externs)
- (if js2-include-gears-externs
- js2-gears-externs)
- (if js2-include-rhino-externs
- js2-rhino-externs)))
-
- ;; We do our own syntax highlighting based on the parse tree.
- ;; However, we want minor modes that add keywords to highlight properly
- ;; (examples: doxymacs, column-marker). We do this by not letting
- ;; font-lock unfontify anything, and telling it to fontify after we
- ;; re-parse and re-highlight the buffer. (We currently don't do any
- ;; work with regions other than the whole buffer.)
- (dolist (var '(font-lock-unfontify-buffer-function
- font-lock-unfontify-region-function))
- (set (make-local-variable var) (lambda (&rest args) t)))
-
- ;; Don't let font-lock do syntactic (string/comment) fontification.
- (set (make-local-variable #'font-lock-syntactic-face-function)
- (lambda (state) nil))
-
- ;; Experiment: make reparse-delay longer for longer files.
- (if (plusp js2-dynamic-idle-timer-adjust)
- (setq js2-idle-timer-delay
- (* js2-idle-timer-delay
- (/ (point-max) js2-dynamic-idle-timer-adjust))))
-
- (add-hook 'change-major-mode-hook #'js2-mode-exit nil t)
- (add-hook 'after-change-functions #'js2-mode-edit nil t)
- (setq imenu-create-index-function #'js2-mode-create-imenu-index)
- (imenu-add-to-menubar (concat "IM-" mode-name))
- (when js2-mirror-mode
- (js2-enter-mirror-mode))
- (add-to-invisibility-spec '(js2-outline . t))
- (set (make-local-variable 'line-move-ignore-invisible) t)
- (set (make-local-variable 'forward-sexp-function) #'js2-mode-forward-sexp)
- (setq js2-mode-functions-hidden nil
- js2-mode-comments-hidden nil
- js2-mode-buffer-dirty-p t
- js2-mode-parsing nil)
- (js2-reparse)
- (run-hooks 'js2-mode-hook))
-
-(defun js2-mode-exit ()
- "Exit `js2-mode' and clean up."
- (interactive)
- (when js2-mode-node-overlay
- (delete-overlay js2-mode-node-overlay)
- (setq js2-mode-node-overlay nil))
- (js2-remove-overlays)
- (setq js2-mode-ast nil)
- (remove-hook 'change-major-mode-hook #'js2-mode-exit t)
- (remove-from-invisibility-spec '(js2-outline . t))
- (js2-mode-show-all)
- (js2-with-unmodifying-text-property-changes
- (js2-clear-face (point-min) (point-max))))
-
-(defun js2-before-save ()
- "Clean up whitespace before saving file.
-You can disable this by customizing `js2-cleanup-whitespace'."
- (when js2-cleanup-whitespace
- (let ((col (current-column)))
- (delete-trailing-whitespace)
- ;; don't change trailing whitespace on current line
- (unless (eq (current-column) col)
- (indent-to col)))))
-
-(defsubst js2-mode-reset-timer ()
- "Cancel any existing parse timer and schedule a new one."
- (if js2-mode-parse-timer
- (cancel-timer js2-mode-parse-timer))
- (setq js2-mode-parsing nil)
- (setq js2-mode-parse-timer
- (run-with-idle-timer js2-idle-timer-delay nil #'js2-reparse)))
-
-(defun js2-mode-edit (beg end len)
- "Schedule a new parse after buffer is edited.
-Buffer edit spans from BEG to END and is of length LEN.
-Also clears the `js2-magic' bit on autoinserted parens/brackets
-if the edit occurred on a line different from the magic paren."
- (let* ((magic-pos (next-single-property-change (point-min) 'js2-magic))
- (line (if magic-pos (line-number-at-pos magic-pos))))
- (and line
- (or (/= (line-number-at-pos beg) line)
- (and (> 0 len)
- (/= (line-number-at-pos end) line)))
- (js2-mode-mundanify-parens)))
- (setq js2-mode-buffer-dirty-p t)
- (js2-mode-hide-overlay)
- (js2-mode-reset-timer))
-
-(defun js2-mode-run-font-lock ()
- "Run `font-lock-fontify-buffer' after parsing/highlighting.
-This is intended to allow modes that install their own font-lock keywords
-to work with js2-mode. In practice it never seems to work for long.
-Hopefully the Emacs maintainers can help figure out a way to make it work."
- (when (and (boundp 'font-lock-keywords)
- font-lock-keywords
- (boundp 'font-lock-mode)
- font-lock-mode)
- ;; TODO: font-lock and jit-lock really really REALLY don't want to
- ;; play nicely with js2-mode. They go out of their way to fail to
- ;; provide any option for saying "look, fontify the farging buffer
- ;; with just the keywords already". Argh.
- (setq font-lock-defaults (list font-lock-keywords 'keywords-only))
- (let (font-lock-verbose)
- (font-lock-default-fontify-buffer))))
-
-(defun js2-reparse (&optional force)
- "Re-parse current buffer after user finishes some data entry.
-If we get any user input while parsing, including cursor motion,
-we discard the parse and reschedule it. If FORCE is nil, then the
-buffer will only rebuild its `js2-mode-ast' if the buffer is dirty."
- (let (time
- interrupted-p
- (js2-compiler-strict-mode js2-mode-show-strict-warnings))
- (unless js2-mode-parsing
- (setq js2-mode-parsing t)
- (unwind-protect
- (when (or js2-mode-buffer-dirty-p force)
- (js2-remove-overlays)
- (js2-with-unmodifying-text-property-changes
- (remove-text-properties (point-min) (point-max) '(syntax-table))
- (setq js2-mode-buffer-dirty-p nil
- js2-mode-fontifications nil
- js2-mode-deferred-properties nil
- js2-additional-externs nil)
- (if js2-mode-verbose-parse-p
- (message "parsing..."))
- (setq time
- (js2-time
- (setq interrupted-p
- (catch 'interrupted
- (setq js2-mode-ast (js2-parse))
- (js2-mode-fontify-regions)
- (js2-mode-remove-suppressed-warnings)
- (js2-mode-show-warnings)
- (js2-mode-show-errors)
- (js2-mode-run-font-lock) ; note: doesn't work
- (js2-mode-highlight-magic-parens)
- (if (>= js2-highlight-level 1)
- (js2-highlight-jsdoc js2-mode-ast))
- nil))))
- (if interrupted-p
- (progn
- ;; unfinished parse => try again
- (setq js2-mode-buffer-dirty-p t)
- (js2-mode-reset-timer))
- (if js2-mode-verbose-parse-p
- (message "Parse time: %s" time)))))
- (setq js2-mode-parsing nil)
- (unless interrupted-p
- (setq js2-mode-parse-timer nil))))))
-
-(defun js2-mode-show-node ()
- "Debugging aid: highlight selected AST node on mouse click."
- (interactive)
- (let ((node (js2-node-at-point))
- beg
- end)
- (when js2-mode-show-overlay
- (if (null node)
- (message "No node found at location %s" (point))
- (setq beg (js2-node-abs-pos node)
- end (+ beg (js2-node-len node)))
- (if js2-mode-node-overlay
- (move-overlay js2-mode-node-overlay beg end)
- (setq js2-mode-node-overlay (make-overlay beg end))
- (overlay-put js2-mode-node-overlay 'face 'highlight))
- (js2-with-unmodifying-text-property-changes
- (put-text-property beg end 'point-left #'js2-mode-hide-overlay))
- (message "%s, parent: %s"
- (js2-node-short-name node)
- (if (js2-node-parent node)
- (js2-node-short-name (js2-node-parent node))
- "nil"))))))
-
-(defun js2-mode-hide-overlay (&optional p1 p2)
- "Remove the debugging overlay when the point moves.
-P1 and P2 are the old and new values of point, respectively."
- (when js2-mode-node-overlay
- (let ((beg (overlay-start js2-mode-node-overlay))
- (end (overlay-end js2-mode-node-overlay)))
- ;; Sometimes we're called spuriously.
- (unless (and p2
- (>= p2 beg)
- (<= p2 end))
- (js2-with-unmodifying-text-property-changes
- (remove-text-properties beg end '(point-left nil)))
- (delete-overlay js2-mode-node-overlay)
- (setq js2-mode-node-overlay nil)))))
-
-(defun js2-mode-reset ()
- "Debugging helper: reset everything."
- (interactive)
- (js2-mode-exit)
- (js2-mode))
-
-(defsubst js2-mode-show-warn-or-err (e face)
- "Highlight a warning or error E with FACE.
-E is a list of ((MSG-KEY MSG-ARG) BEG END)."
- (let* ((key (first e))
- (beg (second e))
- (end (+ beg (third e)))
- ;; Don't inadvertently go out of bounds.
- (beg (max (point-min) (min beg (point-max))))
- (end (max (point-min) (min end (point-max))))
- (js2-highlight-level 3) ; so js2-set-face is sure to fire
- (ovl (make-overlay beg end)))
- (overlay-put ovl 'face face)
- (overlay-put ovl 'js2-error t)
- (put-text-property beg end 'help-echo (js2-get-msg key))
- (put-text-property beg end 'point-entered #'js2-echo-error)))
-
-(defun js2-remove-overlays ()
- "Remove overlays from buffer that have a `js2-error' property."
- (let ((beg (point-min))
- (end (point-max)))
- (save-excursion
- (dolist (o (overlays-in beg end))
- (when (overlay-get o 'js2-error)
- (delete-overlay o))))))
-
-(defun js2-error-at-point (&optional pos)
- "Return non-nil if there's an error overlay at POS.
-Defaults to point."
- (loop with pos = (or pos (point))
- for o in (overlays-at pos)
- thereis (overlay-get o 'js2-error)))
-
-(defun js2-mode-fontify-regions ()
- "Apply fontifications recorded during parsing."
- ;; We defer clearing faces as long as possible to eliminate flashing.
- (js2-clear-face (point-min) (point-max))
- ;; have to reverse the recorded fontifications so that errors and
- ;; warnings overwrite the normal fontifications
- (dolist (f (nreverse js2-mode-fontifications))
- (put-text-property (first f) (second f) 'face (third f)))
- (setq js2-mode-fontifications nil)
- (dolist (p js2-mode-deferred-properties)
- (apply #'put-text-property p))
- (setq js2-mode-deferred-properties nil))
-
-(defun js2-mode-show-errors ()
- "Highlight syntax errors."
- (when js2-mode-show-parse-errors
- (dolist (e (js2-ast-root-errors js2-mode-ast))
- (js2-mode-show-warn-or-err e 'js2-error))))
-
-(defun js2-mode-remove-suppressed-warnings ()
- "Take suppressed warnings out of the AST warnings list.
-This ensures that the counts and `next-error' are correct."
- (setf (js2-ast-root-warnings js2-mode-ast)
- (js2-delete-if
- (lambda (e)
- (let ((key (caar e)))
- (or
- (and (not js2-strict-trailing-comma-warning)
- (string-match "trailing\\.comma" key))
- (and (not js2-strict-cond-assign-warning)
- (string= key "msg.equal.as.assign"))
- (and js2-missing-semi-one-line-override
- (string= key "msg.missing.semi")
- (let* ((beg (second e))
- (node (js2-node-at-point beg))
- (fn (js2-mode-find-parent-fn node))
- (body (and fn (js2-function-node-body fn)))
- (lc (and body (js2-node-abs-pos body)))
- (rc (and lc (+ lc (js2-node-len body)))))
- (and fn
- (or (null body)
- (save-excursion
- (goto-char beg)
- (and (js2-same-line lc)
- (js2-same-line rc))))))))))
- (js2-ast-root-warnings js2-mode-ast))))
-
-(defun js2-mode-show-warnings ()
- "Highlight strict-mode warnings."
- (when js2-mode-show-strict-warnings
- (dolist (e (js2-ast-root-warnings js2-mode-ast))
- (js2-mode-show-warn-or-err e 'js2-warning))))
-
-(defun js2-echo-error (old-point new-point)
- "Called by point-motion hooks."
- (let ((msg (get-text-property new-point 'help-echo)))
- (if msg
- (message msg))))
-
-(defalias #'js2-echo-help #'js2-echo-error)
-
-(defun js2-enter-key ()
- "Handle user pressing the Enter key."
- (interactive)
- (let ((parse-status (save-excursion
- (parse-partial-sexp (point-min) (point)))))
- (cond
- ;; check if we're inside a string
- ((nth 3 parse-status)
- (js2-mode-split-string parse-status))
- ;; check if inside a block comment
- ((nth 4 parse-status)
- (js2-mode-extend-comment))
- (t
- ;; should probably figure out what the mode-map says we should do
- (if js2-indent-on-enter-key
- (let ((js2-bounce-indent-p nil))
- (js2-indent-line)))
- (insert "\n")
- (if js2-enter-indents-newline
- (let ((js2-bounce-indent-p nil))
- (js2-indent-line)))))))
-
-(defun js2-mode-split-string (parse-status)
- "Turn a newline in mid-string into a string concatenation.
-PARSE-STATUS is as documented in `parse-partial-sexp'."
- (let* ((col (current-column))
- (quote-char (nth 3 parse-status))
- (quote-string (string quote-char))
- (string-beg (nth 8 parse-status))
- (indent (save-match-data
- (or
- (save-excursion
- (back-to-indentation)
- (if (looking-at "\\+")
- (current-column)))
- (save-excursion
- (goto-char string-beg)
- (if (looking-back "\\+\\s-+")
- (goto-char (match-beginning 0)))
- (current-column))))))
- (insert quote-char "\n")
- (indent-to indent)
- (insert "+ " quote-string)
- (when (eolp)
- (insert quote-string)
- (backward-char 1))))
-
-(defun js2-mode-extend-comment ()
- "When inside a comment block, add comment prefix."
- (let (star single col first-line needs-close)
- (save-excursion
- (back-to-indentation)
- (cond
- ((looking-at "\\*[^/]")
- (setq star t
- col (current-column)))
- ((looking-at "/\\*")
- (setq star t
- first-line t
- col (1+ (current-column))))
- ((looking-at "//")
- (setq single t
- col (current-column)))))
- ;; Heuristic for whether we need to close the comment:
- ;; if we've got a parse error here, assume it's an unterminated
- ;; comment.
- (setq needs-close
- (or
- (eq (get-text-property (1- (point)) 'point-entered)
- 'js2-echo-error)
- ;; The heuristic above doesn't work well when we're
- ;; creating a comment and there's another one downstream,
- ;; as our parser thinks this one ends at the end of the
- ;; next one. (You can have a /* inside a js block comment.)
- ;; So just close it if the next non-ws char isn't a *.
- (and first-line
- (eolp)
- (save-excursion
- (skip-chars-forward " \t\r\n")
- (not (eq (char-after) ?*))))))
- (insert "\n")
- (cond
- (star
- (indent-to col)
- (insert "* ")
- (if (and first-line needs-close)
- (save-excursion
- (insert "\n")
- (indent-to col)
- (insert "*/"))))
- (single
- (when (save-excursion
- (and (zerop (forward-line 1))
- (looking-at "\\s-*//")))
- (indent-to col)
- (insert "// "))))))
-
-(defun js2-beginning-of-line ()
- "Toggles point between bol and first non-whitespace char in line.
-Also moves past comment delimiters when inside comments."
- (interactive)
- (let (node beg)
- (cond
- ((bolp)
- (back-to-indentation))
- ((looking-at "//")
- (skip-chars-forward "/ \t"))
- ((and (eq (char-after) ?*)
- (setq node (js2-comment-at-point))
- (memq (js2-comment-node-format node) '(jsdoc block))
- (save-excursion
- (skip-chars-backward " \t")
- (bolp)))
- (skip-chars-forward "\* \t"))
- (t
- (goto-char (point-at-bol))))))
-
-(defun js2-end-of-line ()
- "Toggles point between eol and last non-whitespace char in line."
- (interactive)
- (if (eolp)
- (skip-chars-backward " \t")
- (goto-char (point-at-eol))))
-
-(defun js2-enter-mirror-mode()
- "Turns on mirror mode, where quotes, brackets etc are mirrored automatically
- on insertion."
- (interactive)
- (define-key js2-mode-map (read-kbd-macro "{") 'js2-mode-match-curly)
- (define-key js2-mode-map (read-kbd-macro "}") 'js2-mode-magic-close-paren)
- (define-key js2-mode-map (read-kbd-macro "\"") 'js2-mode-match-double-quote)
- (define-key js2-mode-map (read-kbd-macro "'") 'js2-mode-match-single-quote)
- (define-key js2-mode-map (read-kbd-macro "(") 'js2-mode-match-paren)
- (define-key js2-mode-map (read-kbd-macro ")") 'js2-mode-magic-close-paren)
- (define-key js2-mode-map (read-kbd-macro "[") 'js2-mode-match-bracket)
- (define-key js2-mode-map (read-kbd-macro "]") 'js2-mode-magic-close-paren))
-
-(defun js2-leave-mirror-mode()
- "Turns off mirror mode."
- (interactive)
- (dolist (key '("{" "\"" "'" "(" ")" "[" "]"))
- (define-key js2-mode-map (read-kbd-macro key) 'self-insert-command)))
-
-(defsubst js2-mode-inside-string ()
- "Return non-nil if inside a string.
-Actually returns the quote character that begins the string."
- (let ((parse-state (save-excursion
- (parse-partial-sexp (point-min) (point)))))
- (nth 3 parse-state)))
-
-(defsubst js2-mode-inside-comment-or-string ()
- "Return non-nil if inside a comment or string."
- (or
- (let ((comment-start
- (save-excursion
- (goto-char (point-at-bol))
- (if (re-search-forward "//" (point-at-eol) t)
- (match-beginning 0)))))
- (and comment-start
- (<= comment-start (point))))
- (let ((parse-state (save-excursion
- (parse-partial-sexp (point-min) (point)))))
- (or (nth 3 parse-state)
- (nth 4 parse-state)))))
-
-(defsubst js2-make-magic-delimiter (delim &optional pos)
- "Add `js2-magic' and `js2-magic-paren' to DELIM, a string.
-Sets value of `js2-magic' text property to line number at POS."
- (propertize delim
- 'js2-magic (line-number-at-pos pos)
- 'face 'js2-magic-paren))
-
-(defun js2-mode-match-delimiter (open close)
- "Insert OPEN (a string) and possibly matching delimiter CLOSE.
-The rule we use, which as far as we can tell is how Eclipse works,
-is that we insert the match if we're not in a comment or string,
-and the next non-whitespace character is either punctuation or
-occurs on another line."
- (insert open)
- (when (and (looking-at "\\s-*\\([[:punct:]]\\|$\\)")
- (not (js2-mode-inside-comment-or-string)))
- (save-excursion
- (insert (js2-make-magic-delimiter close)))
- (when js2-auto-indent-p
- (let ((js2-bounce-indent-p (js2-code-at-bol-p)))
- (js2-indent-line)))))
-
-(defun js2-mode-match-bracket ()
- "Insert matching bracket."
- (interactive)
- (js2-mode-match-delimiter "[" "]"))
-
-(defun js2-mode-match-paren ()
- "Insert matching paren unless already inserted."
- (interactive)
- (js2-mode-match-delimiter "(" ")"))
-
-(defun js2-mode-match-curly (arg)
- "Insert matching curly-brace.
-With prefix arg, no formatting or indentation will occur -- the close-brace
-is simply inserted directly at the point."
- (interactive "p")
- (let (try-pos)
- (cond
- (current-prefix-arg
- (js2-mode-match-delimiter "{" "}"))
- ((and js2-auto-insert-catch-block
- (setq try-pos (if (looking-back "\\s-*\\(try\\)\\s-*"
- (point-at-bol))
- (match-beginning 1))))
- (js2-insert-catch-skel try-pos))
- (t
- ;; Otherwise try to do something smarter.
- (insert "{")
- (unless (or (not (looking-at "\\s-*$"))
- (save-excursion
- (skip-chars-forward " \t\r\n")
- (and (looking-at "}")
- (js2-error-at-point)))
- (js2-mode-inside-comment-or-string))
- (undo-boundary)
- ;; absolutely mystifying bug: when inserting the next "\n",
- ;; the buffer-undo-list is given two new entries: the inserted range,
- ;; and the incorrect position of the point. It's recorded incorrectly
- ;; as being before the opening "{", not after it. But it's recorded
- ;; as the correct value if you're debugging `js2-mode-match-curly'
- ;; in edebug. I have no idea why it's doing this, but incrementing
- ;; the inserted position fixes the problem, so that the undo takes us
- ;; back to just after the user-inserted "{".
- (insert "\n")
- (ignore-errors
- (incf (cadr buffer-undo-list)))
- (js2-indent-line)
- (save-excursion
- (insert "\n}")
- (let ((js2-bounce-indent-p (js2-code-at-bol-p)))
- (js2-indent-line))))))))
-
-(defun js2-insert-catch-skel (try-pos)
- "Complete a try/catch block after inserting a { following a try keyword.
-Rationale is that a try always needs a catch or a finally, and the catch is
-the more likely of the two.
-
-TRY-POS is the buffer position of the try keyword. The open-curly should
-already have been inserted."
- (insert "{")
- (let ((try-col (save-excursion
- (goto-char try-pos)
- (current-column))))
- (insert "\n")
- (undo-boundary)
- (js2-indent-line) ;; indent the blank line where cursor will end up
- (save-excursion
- (insert "\n")
- (indent-to try-col)
- (insert "} catch (x) {\n\n")
- (indent-to try-col)
- (insert "}"))))
-
-(defun js2-mode-highlight-magic-parens ()
- "Re-highlight magic parens after parsing nukes the 'face prop."
- (let ((beg (point-min))
- end)
- (while (setq beg (next-single-property-change beg 'js2-magic))
- (setq end (next-single-property-change (1+ beg) 'js2-magic))
- (if (get-text-property beg 'js2-magic)
- (js2-with-unmodifying-text-property-changes
- (put-text-property beg (or end (1+ beg))
- 'face 'js2-magic-paren))))))
-
-(defun js2-mode-mundanify-parens ()
- "Clear all magic parens and brackets."
- (let ((beg (point-min))
- end)
- (while (setq beg (next-single-property-change beg 'js2-magic))
- (setq end (next-single-property-change (1+ beg) 'js2-magic))
- (remove-text-properties beg (or end (1+ beg))
- '(js2-magic face)))))
-
-(defsubst js2-match-quote (quote-string)
- (let ((start-quote (js2-mode-inside-string)))
- (cond
- ;; inside a comment - don't do quote-matching, since we can't
- ;; reliably figure out if we're in a string inside the comment
- ((js2-comment-at-point)
- (insert quote-string))
- ((not start-quote)
- ;; not in string => insert matched quotes
- (insert quote-string)
- ;; exception: if we're just before a word, don't double it.
- (unless (looking-at "[^ \t\r\n]")
- (save-excursion
- (insert quote-string))))
- ((looking-at quote-string)
- (if (looking-back "[^\\]\\\\")
- (insert quote-string)
- (forward-char 1)))
- ((and js2-mode-escape-quotes
- (save-excursion
- (save-match-data
- (re-search-forward quote-string (point-at-eol) t))))
- ;; inside terminated string, escape quote (unless already escaped)
- (insert (if (looking-back "[^\\]\\\\")
- quote-string
- (concat "\\" quote-string))))
- (t
- (insert quote-string))))) ; else terminate the string
-
-(defun js2-mode-match-single-quote ()
- "Insert matching single-quote."
- (interactive)
- (let ((parse-status (parse-partial-sexp (point-min) (point))))
- ;; don't match inside comments, since apostrophe is more common
- (if (nth 4 parse-status)
- (insert "'")
- (js2-match-quote "'"))))
-
-(defun js2-mode-match-double-quote ()
- "Insert matching double-quote."
- (interactive)
- (js2-match-quote "\""))
-
-;; Eclipse works as follows:
-;; * type an open-paren and it auto-inserts close-paren
-;; - auto-inserted paren gets a green bracket
-;; - green bracket means typing close-paren there will skip it
-;; * if you insert any text on a different line, it turns off
-(defun js2-mode-magic-close-paren ()
- "Skip over close-paren rather than inserting, where appropriate."
- (interactive)
- (let* ((here (point))
- (parse-status (parse-partial-sexp (point-min) here))
- (open-pos (nth 1 parse-status))
- (close last-input-event)
- (open (cond
- ((eq close ?\))
- ?\()
- ((eq close ?\])
- ?\[)
- ((eq close ?})
- ?{)
- (t nil))))
- (if (and (eq (char-after) close)
- (eq open (char-after open-pos))
- (js2-same-line open-pos)
- (get-text-property here 'js2-magic))
- (progn
- (remove-text-properties here (1+ here) '(js2-magic face))
- (forward-char 1))
- (insert-char close 1))
- (blink-matching-open)))
-
-(defun js2-mode-wait-for-parse (callback)
- "Invoke CALLBACK when parsing is finished.
-If parsing is already finished, calls CALLBACK immediately."
- (if (not js2-mode-buffer-dirty-p)
- (funcall callback)
- (push callback js2-mode-pending-parse-callbacks)
- (add-hook 'js2-parse-finished-hook #'js2-mode-parse-finished)))
-
-(defun js2-mode-parse-finished ()
- "Invoke callbacks in `js2-mode-pending-parse-callbacks'."
- ;; We can't let errors propagate up, since it prevents the
- ;; `js2-parse' method from completing normally and returning
- ;; the ast, which makes things mysteriously not work right.
- (unwind-protect
- (dolist (cb js2-mode-pending-parse-callbacks)
- (condition-case err
- (funcall cb)
- (error (message "%s" err))))
- (setq js2-mode-pending-parse-callbacks nil)))
-
-(defun js2-mode-flag-region (from to flag)
- "Hide or show text from FROM to TO, according to FLAG.
-If FLAG is nil then text is shown, while if FLAG is t the text is hidden.
-Returns the created overlay if FLAG is non-nil."
- (remove-overlays from to 'invisible 'js2-outline)
- (when flag
- (let ((o (make-overlay from to)))
- (overlay-put o 'invisible 'js2-outline)
- (overlay-put o 'isearch-open-invisible
- 'js2-isearch-open-invisible)
- o)))
-
-;; Function to be set as an outline-isearch-open-invisible' property
-;; to the overlay that makes the outline invisible (see
-;; `js2-mode-flag-region').
-(defun js2-isearch-open-invisible (overlay)
- ;; We rely on the fact that isearch places point on the matched text.
- (js2-mode-show-element))
-
-(defun js2-mode-invisible-overlay-bounds (&optional pos)
- "Return cons cell of bounds of folding overlay at POS.
-Returns nil if not found."
- (let ((overlays (overlays-at (or pos (point))))
- o)
- (while (and overlays
- (not o))
- (if (overlay-get (car overlays) 'invisible)
- (setq o (car overlays))
- (setq overlays (cdr overlays))))
- (if o
- (cons (overlay-start o) (overlay-end o)))))
-
-(defun js2-mode-function-at-point (&optional pos)
- "Return the innermost function node enclosing current point.
-Returns nil if point is not in a function."
- (let ((node (js2-node-at-point pos)))
- (while (and node (not (js2-function-node-p node)))
- (setq node (js2-node-parent node)))
- (if (js2-function-node-p node)
- node)))
-
-(defun js2-mode-toggle-element ()
- "Hide or show the foldable element at the point."
- (interactive)
- (let (comment fn pos)
- (save-excursion
- (save-match-data
- (cond
- ;; /* ... */ comment?
- ((js2-block-comment-p (setq comment (js2-comment-at-point)))
- (if (js2-mode-invisible-overlay-bounds
- (setq pos (+ 3 (js2-node-abs-pos comment))))
- (progn
- (goto-char pos)
- (js2-mode-show-element))
- (js2-mode-hide-element)))
- ;; //-comment?
- ((save-excursion
- (back-to-indentation)
- (looking-at js2-mode-//-comment-re))
- (js2-mode-toggle-//-comment))
- ;; function?
- ((setq fn (js2-mode-function-at-point))
- (setq pos (and (js2-function-node-body fn)
- (js2-node-abs-pos (js2-function-node-body fn))))
- (goto-char (1+ pos))
- (if (js2-mode-invisible-overlay-bounds)
- (js2-mode-show-element)
- (js2-mode-hide-element)))
- (t
- (message "Nothing at point to hide or show")))))))
-
-(defun js2-mode-hide-element ()
- "Fold/hide contents of a block, showing ellipses.
-Show the hidden text with \\[js2-mode-show-element]."
- (interactive)
- (if js2-mode-buffer-dirty-p
- (js2-mode-wait-for-parse #'js2-mode-hide-element))
- (let (node body beg end)
- (cond
- ((js2-mode-invisible-overlay-bounds)
- (message "already hidden"))
- (t
- (setq node (js2-node-at-point))
- (cond
- ((js2-block-comment-p node)
- (js2-mode-hide-comment node))
- (t
- (while (and node (not (js2-function-node-p node)))
- (setq node (js2-node-parent node)))
- (if (and node
- (setq body (js2-function-node-body node)))
- (progn
- (setq beg (js2-node-abs-pos body)
- end (+ beg (js2-node-len body)))
- (js2-mode-flag-region (1+ beg) (1- end) 'hide))
- (message "No collapsable element found at point"))))))))
-
-(defun js2-mode-show-element ()
- "Show the hidden element at current point."
- (interactive)
- (let ((bounds (js2-mode-invisible-overlay-bounds)))
- (if bounds
- (js2-mode-flag-region (car bounds) (cdr bounds) nil)
- (message "Nothing to un-hide"))))
-
-(defun js2-mode-show-all ()
- "Show all of the text in the buffer."
- (interactive)
- (js2-mode-flag-region (point-min) (point-max) nil))
-
-(defun js2-mode-toggle-hide-functions ()
- (interactive)
- (if js2-mode-functions-hidden
- (js2-mode-show-functions)
- (js2-mode-hide-functions)))
-
-(defun js2-mode-hide-functions ()
- "Hides all non-nested function bodies in the buffer.
-Use \\[js2-mode-show-all] to reveal them, or \\[js2-mode-show-element]
-to open an individual entry."
- (interactive)
- (if js2-mode-buffer-dirty-p
- (js2-mode-wait-for-parse #'js2-mode-hide-functions))
- (if (null js2-mode-ast)
- (message "Oops - parsing failed")
- (setq js2-mode-functions-hidden t)
- (js2-visit-ast js2-mode-ast #'js2-mode-function-hider)))
-
-(defun js2-mode-function-hider (n endp)
- (when (not endp)
- (let ((tt (js2-node-type n))
- body beg end)
- (cond
- ((and (= tt js2-FUNCTION)
- (setq body (js2-function-node-body n)))
- (setq beg (js2-node-abs-pos body)
- end (+ beg (js2-node-len body)))
- (js2-mode-flag-region (1+ beg) (1- end) 'hide)
- nil) ; don't process children of function
- (t
- t))))) ; keep processing other AST nodes
-
-(defun js2-mode-show-functions ()
- "Un-hide any folded function bodies in the buffer."
- (interactive)
- (setq js2-mode-functions-hidden nil)
- (save-excursion
- (goto-char (point-min))
- (while (/= (goto-char (next-overlay-change (point)))
- (point-max))
- (dolist (o (overlays-at (point)))
- (when (and (overlay-get o 'invisible)
- (not (overlay-get o 'comment)))
- (js2-mode-flag-region (overlay-start o) (overlay-end o) nil))))))
-
-(defun js2-mode-hide-comment (n)
- (let* ((head (if (eq (js2-comment-node-format n) 'jsdoc)
- 3 ; /**
- 2)) ; /*
- (beg (+ (js2-node-abs-pos n) head))
- (end (- (+ beg (js2-node-len n)) head 2))
- (o (js2-mode-flag-region beg end 'hide)))
- (overlay-put o 'comment t)))
-
-(defun js2-mode-toggle-hide-comments ()
- "Folds all block comments in the buffer.
-Use \\[js2-mode-show-all] to reveal them, or \\[js2-mode-show-element]
-to open an individual entry."
- (interactive)
- (if js2-mode-comments-hidden
- (js2-mode-show-comments)
- (js2-mode-hide-comments)))
-
-(defun js2-mode-hide-comments ()
- (interactive)
- (if js2-mode-buffer-dirty-p
- (js2-mode-wait-for-parse #'js2-mode-hide-comments))
- (if (null js2-mode-ast)
- (message "Oops - parsing failed")
- (setq js2-mode-comments-hidden t)
- (dolist (n (js2-ast-root-comments js2-mode-ast))
- (let ((format (js2-comment-node-format n)))
- (when (js2-block-comment-p n)
- (js2-mode-hide-comment n))))
- (js2-mode-hide-//-comments)))
-
-(defsubst js2-mode-extend-//-comment (direction)
- "Find start or end of a block of similar //-comment lines.
-DIRECTION is -1 to look back, 1 to look forward.
-INDENT is the indentation level to match.
-Returns the end-of-line position of the furthest adjacent
-//-comment line with the same indentation as the current line.
-If there is no such matching line, returns current end of line."
- (let ((pos (point-at-eol))
- (indent (current-indentation)))
- (save-excursion
- (save-match-data
- (while (and (zerop (forward-line direction))
- (looking-at js2-mode-//-comment-re)
- (eq indent (length (match-string 1))))
- (setq pos (point-at-eol)))
- pos))))
-
-(defun js2-mode-hide-//-comments ()
- "Fold adjacent 1-line comments, showing only snippet of first one."
- (let (beg end)
- (save-excursion
- (save-match-data
- (goto-char (point-min))
- (while (re-search-forward js2-mode-//-comment-re nil t)
- (setq beg (point)
- end (js2-mode-extend-//-comment 1))
- (unless (eq beg end)
- (overlay-put (js2-mode-flag-region beg end 'hide)
- 'comment t))
- (goto-char end)
- (forward-char 1))))))
-
-(defun js2-mode-toggle-//-comment ()
- "Fold or un-fold any multi-line //-comment at point.
-Caller should have determined that this line starts with a //-comment."
- (let* ((beg (point-at-eol))
- (end beg))
- (save-excursion
- (goto-char end)
- (if (js2-mode-invisible-overlay-bounds)
- (js2-mode-show-element)
- ;; else hide the comment
- (setq beg (js2-mode-extend-//-comment -1)
- end (js2-mode-extend-//-comment 1))
- (unless (eq beg end)
- (overlay-put (js2-mode-flag-region beg end 'hide)
- 'comment t))))))
-
-(defun js2-mode-show-comments ()
- "Un-hide any hidden comments, leaving other hidden elements alone."
- (interactive)
- (setq js2-mode-comments-hidden nil)
- (save-excursion
- (goto-char (point-min))
- (while (/= (goto-char (next-overlay-change (point)))
- (point-max))
- (dolist (o (overlays-at (point)))
- (when (overlay-get o 'comment)
- (js2-mode-flag-region (overlay-start o) (overlay-end o) nil))))))
-
-(defun js2-mode-display-warnings-and-errors ()
- "Turn on display of warnings and errors."
- (interactive)
- (setq js2-mode-show-parse-errors t
- js2-mode-show-strict-warnings t)
- (js2-reparse 'force))
-
-(defun js2-mode-hide-warnings-and-errors ()
- "Turn off display of warnings and errors."
- (interactive)
- (setq js2-mode-show-parse-errors nil
- js2-mode-show-strict-warnings nil)
- (js2-reparse 'force))
-
-(defun js2-mode-toggle-warnings-and-errors ()
- "Toggle the display of warnings and errors.
-Some users don't like having warnings/errors reported while they type."
- (interactive)
- (setq js2-mode-show-parse-errors (not js2-mode-show-parse-errors)
- js2-mode-show-strict-warnings (not js2-mode-show-strict-warnings))
- (if (interactive-p)
- (message "warnings and errors %s"
- (if js2-mode-show-parse-errors
- "enabled"
- "disabled")))
- (js2-reparse 'force))
-
-(defun js2-mode-customize ()
- (interactive)
- (customize-group 'js2-mode))
-
-(defun js2-mode-forward-sexp (&optional arg)
- "Move forward across one statement or balanced expression.
-With ARG, do it that many times. Negative arg -N means
-move backward across N balanced expressions."
- (interactive "p")
- (setq arg (or arg 1))
- (if js2-mode-buffer-dirty-p
- (js2-mode-wait-for-parse #'js2-mode-forward-sexp))
- (let (node end (start (point)))
- (cond
- ;; backward-sexp
- ;; could probably make this better for some cases:
- ;; - if in statement block (e.g. function body), go to parent
- ;; - infix exprs like (foo in bar) - maybe go to beginning
- ;; of infix expr if in the right-side expression?
- ((and arg (minusp arg))
- (dotimes (i (- arg))
- (js2-backward-sws)
- (forward-char -1) ; enter the node we backed up to
- (setq node (js2-node-at-point (point) t))
- (goto-char (if node
- (js2-node-abs-pos node)
- (point-min)))))
- (t
- ;; forward-sexp
- (js2-forward-sws)
- (dotimes (i arg)
- (js2-forward-sws)
- (setq node (js2-node-at-point (point) t)
- end (if node (+ (js2-node-abs-pos node)
- (js2-node-len node))))
- (goto-char (or end (point-max))))))))
-
-(defun js2-next-error (&optional arg reset)
- "Move to next parse error.
-Typically invoked via \\[next-error].
-ARG is the number of errors, forward or backward, to move.
-RESET means start over from the beginning."
- (interactive "p")
- (if (or (null js2-mode-ast)
- (and (null (js2-ast-root-errors js2-mode-ast))
- (null (js2-ast-root-warnings js2-mode-ast))))
- (message "No errors")
- (when reset
- (goto-char (point-min)))
- (let* ((errs (copy-sequence
- (append (js2-ast-root-errors js2-mode-ast)
- (js2-ast-root-warnings js2-mode-ast))))
- (continue t)
- (start (point))
- (count (or arg 1))
- (backward (minusp count))
- (sorter (if backward '> '<))
- (stopper (if backward '< '>))
- (count (abs count))
- all-errs
- err)
- ;; sort by start position
- (setq errs (sort errs (lambda (e1 e2)
- (funcall sorter (second e1) (second e2))))
- all-errs errs)
- ;; find nth error with pos > start
- (while (and errs continue)
- (when (funcall stopper (cadar errs) start)
- (setq err (car errs))
- (if (zerop (decf count))
- (setq continue nil)))
- (setq errs (cdr errs)))
- (if err
- (goto-char (second err))
- ;; wrap around to first error
- (goto-char (second (car all-errs)))
- ;; if we were already on it, echo msg again
- (if (= (point) start)
- (js2-echo-error (point) (point)))))))
-
-(defun js2-down-mouse-3 ()
- "Make right-click move the point to the click location.
-This makes right-click context menu operations a bit more intuitive.
-The point will not move if the region is active, however, to avoid
-destroying the region selection."
- (interactive)
- (when (and js2-move-point-on-right-click
- (not mark-active))
- (let ((e last-input-event))
- (ignore-errors
- (goto-char (cadadr e))))))
-
-(defun js2-mode-create-imenu-index ()
- "Return an alist for `imenu--index-alist'."
- ;; This is built up in `js2-parse-record-imenu' during parsing.
- (when js2-mode-ast
- ;; if we have an ast but no recorder, they're requesting a rescan
- (unless js2-imenu-recorder
- (js2-reparse 'force))
- (prog1
- (js2-build-imenu-index)
- (setq js2-imenu-recorder nil
- js2-imenu-function-map nil))))
-
-(defun js2-mode-find-tag ()
- "Replacement for `find-tag-default'.
-`find-tag-default' returns a ridiculous answer inside comments."
- (let (beg end)
- (js2-with-underscore-as-word-syntax
- (save-excursion
- (if (and (not (looking-at "[A-Za-z0-9_$]"))
- (looking-back "[A-Za-z0-9_$]"))
- (setq beg (progn (forward-word -1) (point))
- end (progn (forward-word 1) (point)))
- (setq beg (progn (forward-word 1) (point))
- end (progn (forward-word -1) (point))))
- (replace-regexp-in-string
- "[\"']" ""
- (buffer-substring-no-properties beg end))))))
-
-(defun js2-mode-forward-sibling ()
- "Move to the end of the sibling following point in parent.
-Returns non-nil if successful, or nil if there was no following sibling."
- (let* ((node (js2-node-at-point))
- (parent (js2-mode-find-enclosing-fn node))
- sib)
- (when (setq sib (js2-node-find-child-after (point) parent))
- (goto-char (+ (js2-node-abs-pos sib)
- (js2-node-len sib))))))
-
-(defun js2-mode-backward-sibling ()
- "Move to the beginning of the sibling node preceding point in parent.
-Parent is defined as the enclosing script or function."
- (let* ((node (js2-node-at-point))
- (parent (js2-mode-find-enclosing-fn node))
- sib)
- (when (setq sib (js2-node-find-child-before (point) parent))
- (goto-char (js2-node-abs-pos sib)))))
-
-(defun js2-beginning-of-defun ()
- "Go to line on which current function starts, and return non-nil.
-If we're not in a function, go to beginning of previous script-level element."
- (interactive)
- (let ((parent (js2-node-parent-script-or-fn (js2-node-at-point)))
- pos sib)
- (cond
- ((and (js2-function-node-p parent)
- (not (eq (point) (setq pos (js2-node-abs-pos parent)))))
- (goto-char pos))
- (t
- (js2-mode-backward-sibling)))))
-
-(defun js2-end-of-defun ()
- "Go to the char after the last position of the current function.
-If we're not in a function, skips over the next script-level element."
- (interactive)
- (let ((parent (js2-node-parent-script-or-fn (js2-node-at-point))))
- (if (not (js2-function-node-p parent))
- ;; punt: skip over next script-level element beyond point
- (js2-mode-forward-sibling)
- (goto-char (+ 1 (+ (js2-node-abs-pos parent)
- (js2-node-len parent)))))))
-
-(defun js2-mark-defun (&optional allow-extend)
- "Put mark at end of this function, point at beginning.
-The function marked is the one that contains point.
-
-Interactively, if this command is repeated,
-or (in Transient Mark mode) if the mark is active,
-it marks the next defun after the ones already marked."
- (interactive "p")
- (let (extended)
- (when (and allow-extend
- (or (and (eq last-command this-command) (mark t))
- (and transient-mark-mode mark-active)))
- (let ((sib (save-excursion
- (goto-char (mark))
- (if (js2-mode-forward-sibling)
- (point))))
- node)
- (if sib
- (progn
- (set-mark sib)
- (setq extended t))
- ;; no more siblings - try extending to enclosing node
- (goto-char (mark t)))))
- (when (not extended)
- (let ((node (js2-node-at-point (point) t)) ; skip comments
- ast fn stmt parent beg end)
- (when (js2-ast-root-p node)
- (setq ast node
- node (or (js2-node-find-child-after (point) node)
- (js2-node-find-child-before (point) node))))
- ;; only mark whole buffer if we can't find any children
- (if (null node)
- (setq node ast))
- (if (js2-function-node-p node)
- (setq parent node)
- (setq fn (js2-mode-find-enclosing-fn node)
- stmt (if (or (null fn)
- (js2-ast-root-p fn))
- (js2-mode-find-first-stmt node))
- parent (or stmt fn)))
- (setq beg (js2-node-abs-pos parent)
- end (+ beg (js2-node-len parent)))
- (push-mark beg)
- (goto-char end)
- (exchange-point-and-mark)))))
-
-(defun js2-narrow-to-defun ()
- "Narrow to the function enclosing point."
- (interactive)
- (let* ((node (js2-node-at-point (point) t)) ; skip comments
- (fn (if (js2-script-node-p node)
- node
- (js2-mode-find-enclosing-fn node)))
- (beg (js2-node-abs-pos fn)))
- (unless (js2-ast-root-p fn)
- (narrow-to-region beg (+ beg (js2-node-len fn))))))
-
-(provide 'js2-mode)
-
-;; arch-tag: 1dd56864-a3ef-4682-a63f-6341f6a42738
-;;; js2-mode.el ends here
| [Prev in Thread] |
Current Thread |
[Next in Thread] |
- [Emacs-diffs] emacs/lisp ChangeLog Makefile.in speedbar.el pr...,
Chong Yidong <=