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Fix #8652: autodoc: variable comments are ignored if invalid type comments found

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To avoid the crash of ModuleAnalyzer from invalid type comments, this
start to retry parsing without type_comments=False when `ast.parse()`
raises SyntaxError.
This commit is contained in:
Takeshi KOMIYA 2021-01-10 17:08:07 +09:00
parent 7acafa991b
commit eaa8612567
2 changed files with 6 additions and 0 deletions
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2
CHANGES
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@ -38,6 +38,8 @@ Bugs fixed
* #8592: autodoc: ``:meta public:`` does not effect to variables
* #8594: autodoc: empty __all__ attribute is ignored
* #8315: autodoc: Failed to resolve struct.Struct type annotation
* #8652: autodoc: All variable comments in the module are ignored if the module
contains invalid type comments
* #8306: autosummary: mocked modules are documented as empty page when using
:recursive: option
* #8618: html: kbd role produces incorrect HTML when compound-key separators (-,

4
sphinx/pycode/ast.py
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@ -52,6 +52,10 @@ def parse(code: str, mode: str = 'exec') -> "ast.AST":
try:
# type_comments parameter is available on py38+
return ast.parse(code, mode=mode, type_comments=True) # type: ignore
except SyntaxError:
# Some syntax error found. To ignore invalid type comments, retry parsing without
# type_comments parameter (refs: https://github.com/sphinx-doc/sphinx/issues/8652).
return ast.parse(code, mode=mode)
except TypeError:
# fallback to ast module.
# typed_ast is used to parse type_comments if installed.