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[Qemu-devel] [PATCH v6 18/27] qapi: add an error in case a discriminator
From: |
Marc-André Lureau |
Subject: |
[Qemu-devel] [PATCH v6 18/27] qapi: add an error in case a discriminator is conditionnal |
Date: |
Fri, 6 Jul 2018 12:57:44 +0200 |
Making a discriminator conditonal doesn't make much sense. Instead,
the union could be made conditional.
Signed-off-by: Marc-André Lureau <address@hidden>
---
scripts/qapi/common.py | 11 +++++++++--
tests/Makefile.include | 1 +
.../flat-union-invalid-if-discriminator.err | 1 +
.../flat-union-invalid-if-discriminator.exit | 1 +
.../flat-union-invalid-if-discriminator.json | 17 +++++++++++++++++
.../flat-union-invalid-if-discriminator.out | 0
6 files changed, 29 insertions(+), 2 deletions(-)
create mode 100644 tests/qapi-schema/flat-union-invalid-if-discriminator.err
create mode 100644 tests/qapi-schema/flat-union-invalid-if-discriminator.exit
create mode 100644 tests/qapi-schema/flat-union-invalid-if-discriminator.json
create mode 100644 tests/qapi-schema/flat-union-invalid-if-discriminator.out
diff --git a/scripts/qapi/common.py b/scripts/qapi/common.py
index 9b95f8cfe9..13fbb28493 100644
--- a/scripts/qapi/common.py
+++ b/scripts/qapi/common.py
@@ -577,7 +577,8 @@ def find_alternate_member_qtype(qapi_type):
# Return the discriminator enum define if discriminator is specified as an
# enum type, otherwise return None.
-def discriminator_find_enum_define(expr):
+def discriminator_find_enum_define(expr, info):
+ name = expr['union']
base = expr.get('base')
discriminator = expr.get('discriminator')
@@ -592,6 +593,11 @@ def discriminator_find_enum_define(expr):
if not discriminator_member:
return None
+ if discriminator_member.get('if'):
+ raise QAPISemError(info, 'The discriminator %s.%s for union %s '
+ 'must not be conditional' %
+ (base, discriminator, name))
+
return enum_types.get(discriminator_member['type'])
@@ -1020,7 +1026,8 @@ def check_exprs(exprs):
if 'include' in expr:
continue
- if 'union' in expr and not discriminator_find_enum_define(expr):
+ info = expr_elem['info']
+ if 'union' in expr and not discriminator_find_enum_define(expr, info):
name = '%sKind' % expr['union']
elif 'alternate' in expr:
name = '%sKind' % expr['alternate']
diff --git a/tests/Makefile.include b/tests/Makefile.include
index 43e100a6cd..abc3fdf764 100644
--- a/tests/Makefile.include
+++ b/tests/Makefile.include
@@ -510,6 +510,7 @@ qapi-schema += flat-union-inline.json
qapi-schema += flat-union-int-branch.json
qapi-schema += flat-union-invalid-branch-key.json
qapi-schema += flat-union-invalid-discriminator.json
+qapi-schema += flat-union-invalid-if-discriminator.json
qapi-schema += flat-union-no-base.json
qapi-schema += flat-union-optional-discriminator.json
qapi-schema += flat-union-string-discriminator.json
diff --git a/tests/qapi-schema/flat-union-invalid-if-discriminator.err
b/tests/qapi-schema/flat-union-invalid-if-discriminator.err
new file mode 100644
index 0000000000..0c94c9860d
--- /dev/null
+++ b/tests/qapi-schema/flat-union-invalid-if-discriminator.err
@@ -0,0 +1 @@
+tests/qapi-schema/flat-union-invalid-if-discriminator.json:13: The
discriminator TestBase.enum1 for union TestUnion must not be conditional
diff --git a/tests/qapi-schema/flat-union-invalid-if-discriminator.exit
b/tests/qapi-schema/flat-union-invalid-if-discriminator.exit
new file mode 100644
index 0000000000..d00491fd7e
--- /dev/null
+++ b/tests/qapi-schema/flat-union-invalid-if-discriminator.exit
@@ -0,0 +1 @@
+1
diff --git a/tests/qapi-schema/flat-union-invalid-if-discriminator.json
b/tests/qapi-schema/flat-union-invalid-if-discriminator.json
new file mode 100644
index 0000000000..618ec36396
--- /dev/null
+++ b/tests/qapi-schema/flat-union-invalid-if-discriminator.json
@@ -0,0 +1,17 @@
+{ 'enum': 'TestEnum',
+ 'data': [ 'value1', 'value2' ] }
+
+{ 'struct': 'TestBase',
+ 'data': { 'enum1': { 'type': 'TestEnum', 'if': 'FOO' } } }
+
+{ 'struct': 'TestTypeA',
+ 'data': { 'string': 'str' } }
+
+{ 'struct': 'TestTypeB',
+ 'data': { 'integer': 'int' } }
+
+{ 'union': 'TestUnion',
+ 'base': 'TestBase',
+ 'discriminator': 'enum1',
+ 'data': { 'value1': 'TestTypeA',
+ 'value2': 'TestTypeB' } }
diff --git a/tests/qapi-schema/flat-union-invalid-if-discriminator.out
b/tests/qapi-schema/flat-union-invalid-if-discriminator.out
new file mode 100644
index 0000000000..e69de29bb2
--
2.18.0.rc1
- [Qemu-devel] [PATCH v6 05/27] qapi: include osdep.h in type headers, (continued)
- [Qemu-devel] [PATCH v6 05/27] qapi: include osdep.h in type headers, Marc-André Lureau, 2018/07/06
- [Qemu-devel] [PATCH v6 08/27] qapi: change enum visitor and gen_enum* to take QAPISchemaMember, Marc-André Lureau, 2018/07/06
- [Qemu-devel] [PATCH v6 10/27] qapi: factor out checking for keys, Marc-André Lureau, 2018/07/06
- [Qemu-devel] [PATCH v6 09/27] tests: print enum type members more like object type members, Marc-André Lureau, 2018/07/06
- [Qemu-devel] [PATCH v6 11/27] qapi: improve reporting of unknown or missing keys, Marc-André Lureau, 2018/07/06
- [Qemu-devel] [PATCH v6 12/27] qapi: add a dictionnary form with 'name' key for enum members, Marc-André Lureau, 2018/07/06
- [Qemu-devel] [PATCH v6 14/27] qapi-event: add 'if' condition to implicit event enum, Marc-André Lureau, 2018/07/06
- [Qemu-devel] [PATCH v6 13/27] qapi: add 'if' to enum members, Marc-André Lureau, 2018/07/06
- [Qemu-devel] [PATCH v6 15/27] qapi: rename allow_dict to allow_implicit, Marc-André Lureau, 2018/07/06
- [Qemu-devel] [PATCH v6 16/27] qapi: add a dictionary form with 'type' key for members, Marc-André Lureau, 2018/07/06
- [Qemu-devel] [PATCH v6 18/27] qapi: add an error in case a discriminator is conditionnal,
Marc-André Lureau <=
- [Qemu-devel] [PATCH v6 17/27] qapi: add 'if' to implicit struct members, Marc-André Lureau, 2018/07/06
- [Qemu-devel] [PATCH v6 19/27] qapi: add 'if' on union members, Marc-André Lureau, 2018/07/06
- [Qemu-devel] [PATCH v6 20/27] qapi: add 'if' to alternate members, Marc-André Lureau, 2018/07/06
- [Qemu-devel] [PATCH v6 21/27] qapi: add #if conditions to generated code members, Marc-André Lureau, 2018/07/06
- [Qemu-devel] [PATCH v6 23/27] qapi: add 'If:' condition to enum values documentation, Marc-André Lureau, 2018/07/06
- [Qemu-devel] [PATCH v6 24/27] qapi: add 'If:' condition to struct members documentation, Marc-André Lureau, 2018/07/06
- [Qemu-devel] [PATCH v6 26/27] qapi: add more conditions to SPICE, Marc-André Lureau, 2018/07/06
- [Qemu-devel] [PATCH v6 22/27] docs: document schema configuration, Marc-André Lureau, 2018/07/06
- [Qemu-devel] [PATCH v6 25/27] qapi: add condition to variants documentation, Marc-André Lureau, 2018/07/06
- [Qemu-devel] [PATCH v6 27/27] qapi: add conditions to REPLICATION type/commands on the schema, Marc-André Lureau, 2018/07/06