| 1 | // Copyright (C) 2016 The Qt Company Ltd. |
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| 2 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0 |
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| 3 | |
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| 4 | #ifndef RECOGNIZER_H |
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| 5 | #define RECOGNIZER_H |
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| 6 | |
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| 7 | #include "grammar_p.h" |
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| 8 | |
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| 9 | #include "lalr.h" |
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| 10 | |
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| 11 | #include <QtCore/qdebug.h> |
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| 12 | #include <QtCore/qstring.h> |
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| 13 | #include <QtCore/qfile.h> |
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| 14 | #include <QtCore/qtextstream.h> |
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| 15 | |
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| 16 | #include <cstdlib> |
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| 17 | |
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| 18 | class Recognizer: protected grammar |
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| 19 | { |
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| 20 | public: |
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| 21 | Recognizer (Grammar *grammar, bool no_lines); |
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| 22 | ~Recognizer(); |
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| 23 | |
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| 24 | bool parse (const QString &input_file = QString ()); |
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| 25 | |
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| 26 | inline QString decls () const { return _M_decls; } |
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| 27 | inline QString impls () const { return _M_impls; } |
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| 28 | |
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| 29 | protected: |
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| 30 | inline void reallocateStack (); |
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| 31 | |
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| 32 | inline QString &sym (int index) |
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| 33 | { return sym_stack [tos + index - 1]; } |
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| 34 | |
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| 35 | protected: // scanner |
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| 36 | int nextToken(); |
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| 37 | |
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| 38 | inline void inp () |
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| 39 | { |
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| 40 | if (_M_currentChar != _M_lastChar) |
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| 41 | { |
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| 42 | ch = *_M_currentChar++; |
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| 43 | |
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| 44 | if (ch == u'\n') |
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| 45 | ++_M_line; |
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| 46 | } |
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| 47 | else |
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| 48 | ch = QChar(); |
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| 49 | } |
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| 50 | |
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| 51 | QString expand (const QString &text) const; |
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| 52 | |
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| 53 | protected: |
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| 54 | // recognizer |
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| 55 | int tos; |
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| 56 | int stack_size; |
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| 57 | QList<QString> sym_stack; |
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| 58 | int *state_stack; |
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| 59 | |
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| 60 | QString _M_contents; |
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| 61 | QString::const_iterator _M_firstChar; |
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| 62 | QString::const_iterator _M_lastChar; |
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| 63 | QString::const_iterator _M_currentChar; |
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| 64 | |
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| 65 | // scanner |
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| 66 | QChar ch; |
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| 67 | int _M_line; |
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| 68 | int _M_action_line; |
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| 69 | Grammar *_M_grammar; |
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| 70 | RulePointer _M_current_rule; |
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| 71 | QString _M_input_file; |
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| 72 | |
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| 73 | QString _M_decls; |
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| 74 | QString _M_impls; |
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| 75 | QString _M_current_value; |
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| 76 | bool _M_no_lines; |
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| 77 | }; |
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| 78 | |
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| 79 | #endif // RECOGNIZER_H |
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| 80 | |
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