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keywords.py
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1 #!/usr/bin/env python
2 #
3 # Copyright 2007 Neal Norwitz
4 # Portions Copyright 2007 Google Inc.
5 #
6 # Licensed under the Apache License, Version 2.0 (the "License");
7 # you may not use this file except in compliance with the License.
8 # You may obtain a copy of the License at
9 #
10 # http://www.apache.org/licenses/LICENSE-2.0
11 #
12 # Unless required by applicable law or agreed to in writing, software
13 # distributed under the License is distributed on an "AS IS" BASIS,
14 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 # See the License for the specific language governing permissions and
16 # limitations under the License.
17 
18 """C++ keywords and helper utilities for determining keywords."""
19 
20 __author__ = 'nnorwitz@google.com (Neal Norwitz)'
21 
22 
23 try:
24  # Python 3.x
25  import builtins
26 except ImportError:
27  # Python 2.x
28  import __builtin__ as builtins
29 
30 
31 if not hasattr(builtins, 'set'):
32  # Nominal support for Python 2.3.
33  from sets import Set as set
34 
35 
36 TYPES = set('bool char int long short double float void wchar_t unsigned signed'.split())
37 TYPE_MODIFIERS = set('auto register const inline extern static virtual volatile mutable'.split())
38 ACCESS = set('public protected private friend'.split())
39 
40 CASTS = set('static_cast const_cast dynamic_cast reinterpret_cast'.split())
41 
42 OTHERS = set('true false asm class namespace using explicit this operator sizeof'.split())
43 OTHER_TYPES = set('new delete typedef struct union enum typeid typename template'.split())
44 
45 CONTROL = set('case switch default if else return goto'.split())
46 EXCEPTION = set('try catch throw'.split())
47 LOOP = set('while do for break continue'.split())
48 
49 ALL = TYPES | TYPE_MODIFIERS | ACCESS | CASTS | OTHERS | OTHER_TYPES | CONTROL | EXCEPTION | LOOP
50 
51 
52 def IsKeyword(token):
53  return token in ALL
54 
55 def IsBuiltinType(token):
56  if token in ('virtual', 'inline'):
57  # These only apply to methods, they can't be types by themselves.
58  return False
59  return token in TYPES or token in TYPE_MODIFIERS