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1 /**************************************************************************** |
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2 ** |
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3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). |
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4 ** All rights reserved. |
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5 ** Contact: Nokia Corporation (qt-info@nokia.com) |
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6 ** |
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7 ** This file is part of the utils of the Qt Toolkit. |
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8 ** |
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9 ** $QT_BEGIN_LICENSE:LGPL$ |
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10 ** No Commercial Usage |
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11 ** This file contains pre-release code and may not be distributed. |
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12 ** You may use this file in accordance with the terms and conditions |
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13 ** contained in the Technology Preview License Agreement accompanying |
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14 ** this package. |
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15 ** |
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16 ** GNU Lesser General Public License Usage |
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17 ** Alternatively, this file may be used under the terms of the GNU Lesser |
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18 ** General Public License version 2.1 as published by the Free Software |
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19 ** Foundation and appearing in the file LICENSE.LGPL included in the |
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20 ** packaging of this file. Please review the following information to |
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21 ** ensure the GNU Lesser General Public License version 2.1 requirements |
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22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. |
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23 ** |
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24 ** In addition, as a special exception, Nokia gives you certain additional |
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25 ** rights. These rights are described in the Nokia Qt LGPL Exception |
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26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. |
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27 ** |
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28 ** If you have questions regarding the use of this file, please contact |
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29 ** Nokia at qt-info@nokia.com. |
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30 ** |
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31 ** |
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32 ** |
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33 ** |
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34 ** |
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35 ** |
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36 ** |
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37 ** |
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38 ** $QT_END_LICENSE$ |
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39 ** |
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40 ****************************************************************************/ |
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41 |
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42 #include <QtCore/QtDebug> |
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43 #include <QtCore/QString> |
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44 #include <QtCore/QFile> |
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45 #include <QtCore/QTextStream> |
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46 |
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47 #include "grammar_p.h" |
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48 #include "lalr.h" |
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49 |
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50 #include <cstdlib> |
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51 |
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52 class Recognizer: protected grammar |
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53 { |
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54 public: |
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55 Recognizer (Grammar *grammar, bool no_lines); |
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56 ~Recognizer(); |
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57 |
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58 bool parse (const QString &input_file = QString ()); |
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59 |
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60 inline QString decls () const { return _M_decls; } |
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61 inline QString impls () const { return _M_impls; } |
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62 |
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63 protected: |
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64 inline void reallocateStack (); |
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65 |
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66 inline QString &sym (int index) |
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67 { return sym_stack [tos + index - 1]; } |
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68 |
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69 protected: // scanner |
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70 int nextToken(); |
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71 |
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72 inline void inp () |
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73 { |
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74 if (_M_currentChar != _M_lastChar) |
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75 { |
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76 ch = *_M_currentChar++; |
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77 |
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78 if (ch == QLatin1Char('\n')) |
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79 ++_M_line; |
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80 } |
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81 else |
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82 ch = QChar(); |
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83 } |
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84 |
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85 QString expand (const QString &text) const; |
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86 |
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87 protected: |
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88 // recognizer |
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89 int tos; |
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90 int stack_size; |
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91 QVector<QString> sym_stack; |
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92 int *state_stack; |
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93 |
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94 QString _M_contents; |
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95 QString::const_iterator _M_firstChar; |
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96 QString::const_iterator _M_lastChar; |
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97 QString::const_iterator _M_currentChar; |
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98 |
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99 // scanner |
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100 QChar ch; |
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101 int _M_line; |
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102 int _M_action_line; |
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103 Grammar *_M_grammar; |
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104 RulePointer _M_current_rule; |
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105 QString _M_input_file; |
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106 |
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107 QString _M_decls; |
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108 QString _M_impls; |
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109 QString _M_current_value; |
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110 bool _M_no_lines; |
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111 }; |