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1 /**************************************************************************** |
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2 ** |
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3 ** Copyright (C) 2010 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 Qt Mobility Components. |
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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 // Copyright (c) 2008 Roberto Raggi <roberto.raggi@gmail.com> |
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42 // |
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43 // Permission is hereby granted, free of charge, to any person obtaining a copy |
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44 // of this software and associated documentation files (the "Software"), to deal |
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45 // in the Software without restriction, including without limitation the rights |
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46 // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
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47 // copies of the Software, and to permit persons to whom the Software is |
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48 // furnished to do so, subject to the following conditions: |
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49 // |
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50 // The above copyright notice and this permission notice shall be included in |
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51 // all copies or substantial portions of the Software. |
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52 // |
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53 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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54 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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55 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
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56 // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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57 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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58 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
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59 // THE SOFTWARE. |
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60 |
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61 #ifndef CPLUSPLUS_LEXER_H |
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62 #define CPLUSPLUS_LEXER_H |
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63 |
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64 #include "CPlusPlusForwardDeclarations.h" |
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65 #include "Token.h" |
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66 |
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67 |
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68 namespace CPlusPlus { |
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69 |
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70 class CPLUSPLUS_EXPORT Lexer |
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71 { |
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72 Lexer(const Lexer &other); |
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73 void operator =(const Lexer &other); |
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74 |
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75 public: |
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76 enum State { |
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77 State_Default, |
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78 State_MultiLineComment, |
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79 State_MultiLineDoxyComment |
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80 }; |
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81 |
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82 Lexer(TranslationUnit *unit); |
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83 Lexer(const char *firstChar, const char *lastChar); |
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84 ~Lexer(); |
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85 |
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86 Control *control() const; |
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87 TranslationUnit *translationUnit() const; |
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88 |
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89 bool qtMocRunEnabled() const; |
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90 void setQtMocRunEnabled(bool onoff); |
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91 |
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92 bool objCEnabled() const; |
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93 void setObjCEnabled(bool onoff); |
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94 |
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95 void scan(Token *tok); |
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96 |
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97 inline void operator()(Token *tok) |
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98 { scan(tok); } |
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99 |
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100 unsigned tokenOffset() const; |
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101 unsigned tokenLength() const; |
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102 const char *tokenBegin() const; |
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103 const char *tokenEnd() const; |
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104 unsigned currentLine() const; |
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105 |
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106 bool scanCommentTokens() const; |
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107 void setScanCommentTokens(bool onoff); |
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108 |
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109 bool scanKeywords() const; |
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110 void setScanKeywords(bool onoff); |
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111 |
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112 bool scanAngleStringLiteralTokens() const; |
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113 void setScanAngleStringLiteralTokens(bool onoff); |
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114 |
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115 void setStartWithNewline(bool enabled); |
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116 |
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117 int state() const; |
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118 void setState(int state); |
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119 |
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120 bool isIncremental() const; |
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121 void setIncremental(bool isIncremental); |
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122 |
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123 private: |
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124 void scan_helper(Token *tok); |
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125 void setSource(const char *firstChar, const char *lastChar); |
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126 static int classify(const char *string, int length, bool q); |
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127 static int classifyObjCAtKeyword(const char *s, int n); |
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128 static int classifyOperator(const char *string, int length); |
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129 |
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130 inline void yyinp() |
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131 { |
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132 if (++_currentChar == _lastChar) |
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133 _yychar = 0; |
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134 else { |
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135 _yychar = *_currentChar; |
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136 if (_yychar == '\n') |
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137 pushLineStartOffset(); |
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138 } |
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139 } |
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140 |
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141 void pushLineStartOffset(); |
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142 |
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143 private: |
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144 struct Flags { |
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145 unsigned _isIncremental: 1; |
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146 unsigned _scanCommentTokens: 1; |
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147 unsigned _scanKeywords: 1; |
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148 unsigned _scanAngleStringLiteralTokens: 1; |
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149 unsigned _qtMocRunEnabled: 1; |
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150 unsigned _objCEnabled: 1; |
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151 }; |
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152 |
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153 TranslationUnit *_translationUnit; |
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154 const char *_firstChar; |
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155 const char *_currentChar; |
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156 const char *_lastChar; |
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157 const char *_tokenStart; |
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158 unsigned char _yychar; |
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159 int _state; |
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160 union { |
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161 unsigned _flags; |
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162 Flags f; |
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163 }; |
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164 unsigned _currentLine; |
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165 }; |
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166 |
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167 } // end of namespace CPlusPlus |
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168 |
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169 |
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170 #endif // CPLUSPLUS_LEXER_H |