| 1 | // Copyright (C) 2016 The Qt Company Ltd. |
|---|---|
| 2 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0 |
| 3 | |
| 4 | #ifndef PARSER_H |
| 5 | #define PARSER_H |
| 6 | |
| 7 | #include "symbols.h" |
| 8 | #include <QtCore/qbytearrayview.h> |
| 9 | |
| 10 | #include <stack> |
| 11 | |
| 12 | QT_BEGIN_NAMESPACE |
| 13 | |
| 14 | class Parser |
| 15 | { |
| 16 | public: |
| 17 | Parser():index(0), displayWarnings(true), displayNotes(true) {} |
| 18 | Symbols symbols; |
| 19 | qsizetype index; |
| 20 | bool displayWarnings; |
| 21 | bool displayNotes; |
| 22 | |
| 23 | struct IncludePath |
| 24 | { |
| 25 | inline explicit IncludePath(const QByteArray &_path) |
| 26 | : path(_path), isFrameworkPath(false) {} |
| 27 | QByteArray path; |
| 28 | bool isFrameworkPath; |
| 29 | }; |
| 30 | QList<IncludePath> includes; |
| 31 | |
| 32 | std::stack<QByteArray, QByteArrayList> currentFilenames; |
| 33 | |
| 34 | inline bool hasNext() const { return (index < symbols.size()); } |
| 35 | inline Token next() { if (index >= symbols.size()) return NOTOKEN; return symbols.at(i: index++).token; } |
| 36 | inline Token peek() { if (index >= symbols.size()) return NOTOKEN; return symbols.at(i: index).token; } |
| 37 | bool test(Token); |
| 38 | void next(Token); |
| 39 | void next(Token, const char *msg); |
| 40 | inline void prev() {--index;} |
| 41 | inline Token lookup(int k = 1); |
| 42 | inline const Symbol &symbol_lookup(int k = 1) { return symbols.at(i: index-1+k);} |
| 43 | inline Token token() { return symbols.at(i: index-1).token;} |
| 44 | inline QByteArray lexem() { return symbols.at(i: index-1).lexem();} |
| 45 | inline QByteArray unquotedLexem() { return symbols.at(i: index-1).unquotedLexem();} |
| 46 | inline const Symbol &symbol() { return symbols.at(i: index-1);} |
| 47 | |
| 48 | Q_NORETURN void error(const Symbol &symbol); |
| 49 | Q_NORETURN void error(const char *msg = nullptr); |
| 50 | void warning(const char * = nullptr); |
| 51 | void note(const char * = nullptr); |
| 52 | void defaultErrorMsg(const Symbol &sym); |
| 53 | void printMsg(QByteArrayView formatStringSuffix, QByteArrayView msg, const Symbol &sym); |
| 54 | |
| 55 | }; |
| 56 | |
| 57 | inline bool Parser::test(Token token) |
| 58 | { |
| 59 | if (index < symbols.size() && symbols.at(i: index).token == token) { |
| 60 | ++index; |
| 61 | return true; |
| 62 | } |
| 63 | return false; |
| 64 | } |
| 65 | |
| 66 | inline Token Parser::lookup(int k) |
| 67 | { |
| 68 | const qsizetype l = index - 1 + k; |
| 69 | return l < symbols.size() ? symbols.at(i: l).token : NOTOKEN; |
| 70 | } |
| 71 | |
| 72 | inline void Parser::next(Token token) |
| 73 | { |
| 74 | if (!test(token)) |
| 75 | error(); |
| 76 | } |
| 77 | |
| 78 | inline void Parser::next(Token token, const char *msg) |
| 79 | { |
| 80 | if (!test(token)) |
| 81 | error(msg); |
| 82 | } |
| 83 | |
| 84 | QT_END_NAMESPACE |
| 85 | |
| 86 | #endif |
| 87 |