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# This file provides common utility functions for the test suite.
from clang.cindex import Cursor
from clang.cindex import Index
def get_tu(source, lang='c', all_warnings=False):
"""Obtain a translation unit from source and language.
By default, the translation unit is created from source file "t.<ext>"
where <ext> is the default file extension for the specified language. By
default it is C, so "t.c" is the default file name.
Supported languages are {c, cpp, objc}.
all_warnings is a convenience argument to enable all compiler warnings.
"""
name = 't.c'
if lang == 'cpp':
name = 't.cpp'
elif lang == 'objc':
name = 't.m'
elif lang != 'c':
raise Exception('Unknown language: %s' % lang)
args = []
if all_warnings:
args = ['-Wall', '-Wextra']
index = Index.create()
tu = index.parse(name, args=args, unsaved_files=[(name, source)])
assert tu is not None
return tu
def get_cursor(source, spelling):
"""Obtain a cursor from a source object.
This provides a convenient search mechanism to find a cursor with specific
spelling within a source. The first argument can be either a
TranslationUnit or Cursor instance.
If the cursor is not found, None is returned.
"""
children = []
if isinstance(source, Cursor):
children = source.get_children()
else:
# Assume TU
children = source.cursor.get_children()
for cursor in children:
if cursor.spelling == spelling:
return cursor
# Recurse into children.
result = get_cursor(cursor, spelling)
if result is not None:
return result
return None
__all__ = [
'get_cursor',
'get_tu',
]
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