1 # This file provides common utility functions for the test suite. 2 3 from clang.cindex import Cursor 4 from clang.cindex import Index 5 6 def get_tu(source, lang='c', all_warnings=False): 7 """Obtain a translation unit from source and language. 8 9 By default, the translation unit is created from source file "t.<ext>" 10 where <ext> is the default file extension for the specified language. By 11 default it is C, so "t.c" is the default file name. 12 13 Supported languages are {c, cpp, objc}. 14 15 all_warnings is a convenience argument to enable all compiler warnings. 16 """ 17 name = 't.c' 18 if lang == 'cpp': 19 name = 't.cpp' 20 elif lang == 'objc': 21 name = 't.m' 22 elif lang != 'c': 23 raise Exception('Unknown language: %s' % lang) 24 25 args = [] 26 if all_warnings: 27 args = ['-Wall', '-Wextra'] 28 29 index = Index.create() 30 tu = index.parse(name, args=args, unsaved_files=[(name, source)]) 31 assert tu is not None 32 return tu 33 34 def get_cursor(source, spelling): 35 """Obtain a cursor from a source object. 36 37 This provides a convenient search mechanism to find a cursor with specific 38 spelling within a source. The first argument can be either a 39 TranslationUnit or Cursor instance. 40 41 If the cursor is not found, None is returned. 42 """ 43 children = [] 44 if isinstance(source, Cursor): 45 children = source.get_children() 46 else: 47 # Assume TU 48 children = source.cursor.get_children() 49 50 for cursor in children: 51 if cursor.spelling == spelling: 52 return cursor 53 54 # Recurse into children. 55 result = get_cursor(cursor, spelling) 56 if result is not None: 57 return result 58 59 return None 60 61 62 __all__ = [ 63 'get_cursor', 64 'get_tu', 65 ] 66
