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
23try:
24    # Python 3.x
25    import builtins
26except ImportError:
27    # Python 2.x
28    import __builtin__ as builtins
29
30
31if not hasattr(builtins, 'set'):
32    # Nominal support for Python 2.3.
33    from sets import Set as set
34
35
36TYPES = set('bool char int long short double float void wchar_t unsigned signed'.split())
37TYPE_MODIFIERS = set('auto register const inline extern static virtual volatile mutable'.split())
38ACCESS = set('public protected private friend'.split())
39
40CASTS = set('static_cast const_cast dynamic_cast reinterpret_cast'.split())
41
42OTHERS = set('true false asm class namespace using explicit this operator sizeof'.split())
43OTHER_TYPES = set('new delete typedef struct union enum typeid typename template'.split())
44
45CONTROL = set('case switch default if else return goto'.split())
46EXCEPTION = set('try catch throw'.split())
47LOOP = set('while do for break continue'.split())
48
49ALL = TYPES | TYPE_MODIFIERS | ACCESS | CASTS | OTHERS | OTHER_TYPES | CONTROL | EXCEPTION | LOOP
50
51
52def IsKeyword(token):
53    return token in ALL
54
55def 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
60