1/****************************************************************************
2**
3** Copyright (C) 2016 The Qt Company Ltd.
4** Contact: https://www.qt.io/licensing/
5**
6** This file is part of the tools applications of the Qt Toolkit.
7**
8** $QT_BEGIN_LICENSE:GPL-EXCEPT$
9** Commercial License Usage
10** Licensees holding valid commercial Qt licenses may use this file in
11** accordance with the commercial license agreement provided with the
12** Software or, alternatively, in accordance with the terms contained in
13** a written agreement between you and The Qt Company. For licensing terms
14** and conditions see https://www.qt.io/terms-conditions. For further
15** information use the contact form at https://www.qt.io/contact-us.
16**
17** GNU General Public License Usage
18** Alternatively, this file may be used under the terms of the GNU
19** General Public License version 3 as published by the Free Software
20** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
21** included in the packaging of this file. Please review the following
22** information to ensure the GNU General Public License requirements will
23** be met: https://www.gnu.org/licenses/gpl-3.0.html.
24**
25** $QT_END_LICENSE$
26**
27****************************************************************************/
28
29#ifndef PREPROCESSOR_H
30#define PREPROCESSOR_H
31
32#include "parser.h"
33#include <qlist.h>
34#include <qset.h>
35#include <stdio.h>
36
37QT_BEGIN_NAMESPACE
38
39struct Macro
40{
41 Macro() : isFunction(false), isVariadic(false) {}
42 bool isFunction;
43 bool isVariadic;
44 Symbols arguments;
45 Symbols symbols;
46};
47
48#ifdef USE_LEXEM_STORE
49typedef QByteArray MacroName;
50#else
51typedef SubArray MacroName;
52#endif
53typedef QHash<MacroName, Macro> Macros;
54
55class QFile;
56
57class Preprocessor : public Parser
58{
59public:
60 Preprocessor(){}
61 static bool preprocessOnly;
62 QList<QByteArray> frameworks;
63 QSet<QByteArray> preprocessedIncludes;
64 QHash<QByteArray, QByteArray> nonlocalIncludePathResolutionCache;
65 Macros macros;
66 QByteArray resolveInclude(const QByteArray &filename, const QByteArray &relativeTo);
67 Symbols preprocessed(const QByteArray &filename, QFile *device);
68
69 void parseDefineArguments(Macro *m);
70
71 void skipUntilEndif();
72 bool skipBranch();
73
74 void substituteUntilNewline(Symbols &substituted);
75 static Symbols macroExpandIdentifier(Preprocessor *that, SymbolStack &symbols, int lineNum, QByteArray *macroName);
76 static void macroExpand(Symbols *into, Preprocessor *that, const Symbols &toExpand, int &index, int lineNum, bool one,
77 const QSet<QByteArray> &excludeSymbols = QSet<QByteArray>());
78
79 int evaluateCondition();
80
81 enum TokenizeMode { TokenizeCpp, TokenizePreprocessor, PreparePreprocessorStatement, TokenizePreprocessorStatement, TokenizeInclude, PrepareDefine, TokenizeDefine };
82 static Symbols tokenize(const QByteArray &input, int lineNum = 1, TokenizeMode mode = TokenizeCpp);
83
84private:
85 void until(Token);
86
87 void preprocess(const QByteArray &filename, Symbols &preprocessed);
88};
89
90QT_END_NAMESPACE
91
92#endif // PREPROCESSOR_H
93

source code of qtbase/src/tools/moc/preprocessor.h