| 1 | /**************************************************************************** |
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| 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 |
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| 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 |
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| 24 | ** |
| 25 | ** $QT_END_LICENSE$ |
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| 27 | ****************************************************************************/ |
| 28 | |
| 29 | #ifndef PARSER_H |
| 30 | #define PARSER_H |
| 31 | |
| 32 | #include "symbols.h" |
| 33 | |
| 34 | #include <stack> |
| 35 | |
| 36 | QT_BEGIN_NAMESPACE |
| 37 | |
| 38 | class Parser |
| 39 | { |
| 40 | public: |
| 41 | Parser():index(0), displayWarnings(true), displayNotes(true) {} |
| 42 | Symbols symbols; |
| 43 | int index; |
| 44 | bool displayWarnings; |
| 45 | bool displayNotes; |
| 46 | |
| 47 | struct IncludePath |
| 48 | { |
| 49 | inline explicit IncludePath(const QByteArray &_path) |
| 50 | : path(_path), isFrameworkPath(false) {} |
| 51 | QByteArray path; |
| 52 | bool isFrameworkPath; |
| 53 | }; |
| 54 | QList<IncludePath> includes; |
| 55 | |
| 56 | std::stack<QByteArray, QByteArrayList> currentFilenames; |
| 57 | |
| 58 | inline bool hasNext() const { return (index < symbols.size()); } |
| 59 | inline Token next() { if (index >= symbols.size()) return NOTOKEN; return symbols.at(i: index++).token; } |
| 60 | bool test(Token); |
| 61 | void next(Token); |
| 62 | void next(Token, const char *msg); |
| 63 | inline void prev() {--index;} |
| 64 | inline Token lookup(int k = 1); |
| 65 | inline const Symbol &symbol_lookup(int k = 1) { return symbols.at(i: index-1+k);} |
| 66 | inline Token token() { return symbols.at(i: index-1).token;} |
| 67 | inline QByteArray lexem() { return symbols.at(i: index-1).lexem();} |
| 68 | inline QByteArray unquotedLexem() { return symbols.at(i: index-1).unquotedLexem();} |
| 69 | inline const Symbol &symbol() { return symbols.at(i: index-1);} |
| 70 | |
| 71 | Q_NORETURN void error(int rollback); |
| 72 | Q_NORETURN void error(const char *msg = 0); |
| 73 | void warning(const char * = 0); |
| 74 | void note(const char * = 0); |
| 75 | |
| 76 | }; |
| 77 | |
| 78 | inline bool Parser::test(Token token) |
| 79 | { |
| 80 | if (index < symbols.size() && symbols.at(i: index).token == token) { |
| 81 | ++index; |
| 82 | return true; |
| 83 | } |
| 84 | return false; |
| 85 | } |
| 86 | |
| 87 | inline Token Parser::lookup(int k) |
| 88 | { |
| 89 | const int l = index - 1 + k; |
| 90 | return l < symbols.size() ? symbols.at(i: l).token : NOTOKEN; |
| 91 | } |
| 92 | |
| 93 | inline void Parser::next(Token token) |
| 94 | { |
| 95 | if (!test(token)) |
| 96 | error(); |
| 97 | } |
| 98 | |
| 99 | inline void Parser::next(Token token, const char *msg) |
| 100 | { |
| 101 | if (!test(token)) |
| 102 | error(msg); |
| 103 | } |
| 104 | |
| 105 | QT_END_NAMESPACE |
| 106 | |
| 107 | #endif |
| 108 |
