[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[PULL 12/15] qapi/parser: add type hint annotations
From: |
Markus Armbruster |
Subject: |
[PULL 12/15] qapi/parser: add type hint annotations |
Date: |
Thu, 20 May 2021 19:52:53 +0200 |
From: John Snow <jsnow@redhat.com>
Annotations do not change runtime behavior.
This commit *only* adds annotations.
(Annotations for QAPIDoc are in a forthcoming commit.)
Signed-off-by: John Snow <jsnow@redhat.com>
Message-Id: <20210519183951.3946870-13-jsnow@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
---
scripts/qapi/parser.py | 58 +++++++++++++++++++++++++++---------------
1 file changed, 38 insertions(+), 20 deletions(-)
diff --git a/scripts/qapi/parser.py b/scripts/qapi/parser.py
index 8a58e1228f..419e36c870 100644
--- a/scripts/qapi/parser.py
+++ b/scripts/qapi/parser.py
@@ -17,16 +17,26 @@
from collections import OrderedDict
import os
import re
-from typing import List
+from typing import (
+ Dict,
+ List,
+ Optional,
+ Set,
+ Union,
+)
from .common import must_match
from .error import QAPISemError, QAPISourceError
from .source import QAPISourceInfo
+# Return value alias for get_expr().
+_ExprValue = Union[List[object], Dict[str, object], str, bool]
+
+
class QAPIParseError(QAPISourceError):
"""Error class for all QAPI schema parsing errors."""
- def __init__(self, parser, msg):
+ def __init__(self, parser: 'QAPISchemaParser', msg: str):
col = 1
for ch in parser.src[parser.line_pos:parser.pos]:
if ch == '\t':
@@ -38,7 +48,10 @@ def __init__(self, parser, msg):
class QAPISchemaParser:
- def __init__(self, fname, previously_included=None, incl_info=None):
+ def __init__(self,
+ fname: str,
+ previously_included: Optional[Set[str]] = None,
+ incl_info: Optional[QAPISourceInfo] = None):
self._fname = fname
self._included = previously_included or set()
self._included.add(os.path.abspath(self._fname))
@@ -46,20 +59,20 @@ def __init__(self, fname, previously_included=None,
incl_info=None):
# Lexer state (see `accept` for details):
self.info = QAPISourceInfo(self._fname, incl_info)
- self.tok = None
+ self.tok: Union[None, str] = None
self.pos = 0
self.cursor = 0
- self.val = None
+ self.val: Optional[Union[bool, str]] = None
self.line_pos = 0
# Parser output:
- self.exprs = []
- self.docs = []
+ self.exprs: List[Dict[str, object]] = []
+ self.docs: List[QAPIDoc] = []
# Showtime!
self._parse()
- def _parse(self):
+ def _parse(self) -> None:
cur_doc = None
# May raise OSError; allow the caller to handle it.
@@ -125,7 +138,7 @@ def _parse(self):
self.reject_expr_doc(cur_doc)
@staticmethod
- def reject_expr_doc(doc):
+ def reject_expr_doc(doc: Optional['QAPIDoc']) -> None:
if doc and doc.symbol:
raise QAPISemError(
doc.info,
@@ -133,10 +146,14 @@ def reject_expr_doc(doc):
% doc.symbol)
@staticmethod
- def _include(include, info, incl_fname, previously_included):
+ def _include(include: str,
+ info: QAPISourceInfo,
+ incl_fname: str,
+ previously_included: Set[str]
+ ) -> Optional['QAPISchemaParser']:
incl_abs_fname = os.path.abspath(incl_fname)
# catch inclusion cycle
- inf = info
+ inf: Optional[QAPISourceInfo] = info
while inf:
if incl_abs_fname == os.path.abspath(inf.fname):
raise QAPISemError(info, "inclusion loop for %s" % include)
@@ -155,9 +172,9 @@ def _include(include, info, incl_fname,
previously_included):
) from err
@staticmethod
- def _pragma(name, value, info):
+ def _pragma(name: str, value: object, info: QAPISourceInfo) -> None:
- def check_list_str(name, value) -> List[str]:
+ def check_list_str(name: str, value: object) -> List[str]:
if (not isinstance(value, list) or
any([not isinstance(elt, str) for elt in value])):
raise QAPISemError(
@@ -181,7 +198,7 @@ def check_list_str(name, value) -> List[str]:
else:
raise QAPISemError(info, "unknown pragma '%s'" % name)
- def accept(self, skip_comment=True):
+ def accept(self, skip_comment: bool = True) -> None:
while True:
self.tok = self.src[self.cursor]
self.pos = self.cursor
@@ -245,8 +262,8 @@ def accept(self, skip_comment=True):
self.src[self.cursor-1:])
raise QAPIParseError(self, "stray '%s'" % match.group(0))
- def get_members(self):
- expr = OrderedDict()
+ def get_members(self) -> Dict[str, object]:
+ expr: Dict[str, object] = OrderedDict()
if self.tok == '}':
self.accept()
return expr
@@ -272,8 +289,8 @@ def get_members(self):
if self.tok != "'":
raise QAPIParseError(self, "expected string")
- def get_values(self):
- expr = []
+ def get_values(self) -> List[object]:
+ expr: List[object] = []
if self.tok == ']':
self.accept()
return expr
@@ -289,7 +306,8 @@ def get_values(self):
raise QAPIParseError(self, "expected ',' or ']'")
self.accept()
- def get_expr(self):
+ def get_expr(self) -> _ExprValue:
+ expr: _ExprValue
if self.tok == '{':
self.accept()
expr = self.get_members()
@@ -305,7 +323,7 @@ def get_expr(self):
self, "expected '{', '[', string, or boolean")
return expr
- def get_doc(self, info):
+ def get_doc(self, info: QAPISourceInfo) -> List['QAPIDoc']:
if self.val != '##':
raise QAPIParseError(
self, "junk after '##' at start of documentation comment")
--
2.26.3
- [PULL 11/15] qapi/parser: Rework _check_pragma_list_of_str as a TypeGuard, (continued)
- [PULL 11/15] qapi/parser: Rework _check_pragma_list_of_str as a TypeGuard, Markus Armbruster, 2021/05/20
- [PULL 01/15] qapi/parser: Don't try to handle file errors, Markus Armbruster, 2021/05/20
- [PULL 04/15] qapi/parser: factor parsing routine into method, Markus Armbruster, 2021/05/20
- [PULL 15/15] qapi/parser: add docstrings, Markus Armbruster, 2021/05/20
- [PULL 13/15] qapi/parser: Remove superfluous list comprehension, Markus Armbruster, 2021/05/20
- [PULL 07/15] qapi/parser: assert object keys are strings, Markus Armbruster, 2021/05/20
- [PULL 02/15] qapi: Add test for nonexistent schema file, Markus Armbruster, 2021/05/20
- [PULL 05/15] qapi/parser: Assert lexer value is a string, Markus Armbruster, 2021/05/20
- [PULL 03/15] qapi/source: Remove line number from QAPISourceInfo initializer, Markus Armbruster, 2021/05/20
- [PULL 08/15] qapi/parser: Use @staticmethod where appropriate, Markus Armbruster, 2021/05/20
- [PULL 12/15] qapi/parser: add type hint annotations,
Markus Armbruster <=
- [PULL 14/15] qapi/parser: allow 'ch' variable name, Markus Armbruster, 2021/05/20
- Re: [PULL 00/15] QAPI patches patches for 2021-05-20, Peter Maydell, 2021/05/21