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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/QCoreApplication> |
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43 #include <QtCore/QFile> |
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44 #include <QtCore/QStringList> |
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45 #include <QtCore/QtDebug> |
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46 |
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47 #include <cstdlib> |
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48 |
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49 #include "lalr.h" |
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50 #include "dotgraph.h" |
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51 #include "parsetable.h" |
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52 #include "cppgenerator.h" |
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53 #include "recognizer.h" |
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54 |
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55 #define QLALR_NO_DEBUG_TABLE |
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56 #define QLALR_NO_DEBUG_DOT |
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57 |
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58 static void help_me () |
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59 { |
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60 qerr << "Usage: qlalr [options] [input file name]" << endl |
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61 << endl |
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62 << " --help, -h\t\tdisplay this help and exit" << endl |
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63 << " --verbose, -v\t\tverbose output" << endl |
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64 << " --no-debug\t\tno debug information" << endl |
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65 << " --no-lines\t\tno #line directives" << endl |
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66 << " --dot\t\t\tgenerate a graph" << endl |
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67 << " --troll\t\tadd the Trolltech copyright header" << endl |
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68 << endl; |
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69 exit (0); |
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70 } |
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71 |
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72 int main (int argc, char *argv[]) |
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73 { |
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74 QCoreApplication app (argc, argv); |
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75 |
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76 bool generate_dot = false; |
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77 bool generate_report = false; |
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78 bool no_lines = false; |
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79 bool debug_info = true; |
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80 bool troll_copyright = false; |
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81 QString file_name = 0; |
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82 |
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83 QStringList args = app.arguments (); |
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84 args.removeFirst (); |
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85 |
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86 foreach (QString arg, args) |
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87 { |
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88 if (arg == QLatin1String ("-h") || arg == QLatin1String ("--help")) |
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89 help_me (); |
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90 |
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91 else if (arg == QLatin1String ("-v") || arg == QLatin1String ("--verbose")) |
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92 generate_report = true; |
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93 |
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94 else if (arg == QLatin1String ("--dot")) |
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95 generate_dot = true; |
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96 |
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97 else if (arg == QLatin1String ("--no-lines")) |
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98 no_lines = true; |
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99 |
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100 else if (arg == QLatin1String ("--no-debug")) |
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101 debug_info = false; |
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102 |
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103 else if (arg == QLatin1String ("--troll")) |
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104 troll_copyright = true; |
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105 |
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106 else if (file_name.isEmpty ()) |
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107 file_name = arg; |
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108 |
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109 else |
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110 qerr << "*** Warning. Ignore argument `" << arg << "'" << endl; |
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111 } |
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112 |
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113 if (file_name.isEmpty ()) |
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114 { |
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115 help_me (); |
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116 exit (EXIT_SUCCESS); |
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117 } |
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118 |
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119 Grammar grammar; |
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120 Recognizer p (&grammar, no_lines); |
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121 |
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122 if (! p.parse (file_name)) |
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123 exit (EXIT_FAILURE); |
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124 |
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125 if (grammar.rules.isEmpty ()) |
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126 { |
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127 qerr << "*** Fatal. No rules!" << endl; |
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128 exit (EXIT_FAILURE); |
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129 } |
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130 |
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131 else if (grammar.start == grammar.names.end ()) |
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132 { |
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133 qerr << "*** Fatal. No start symbol!" << endl; |
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134 exit (EXIT_FAILURE); |
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135 } |
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136 |
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137 grammar.buildExtendedGrammar (); |
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138 grammar.buildRuleMap (); |
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139 |
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140 Automaton aut (&grammar); |
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141 aut.build (); |
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142 |
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143 CppGenerator gen (p, grammar, aut, generate_report); |
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144 gen.setDebugInfo (debug_info); |
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145 gen.setCopyright (troll_copyright); |
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146 gen (); |
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147 |
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148 if (generate_dot) |
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149 { |
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150 DotGraph genDotFile (qout); |
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151 genDotFile (&aut); |
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152 } |
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153 |
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154 else if (generate_report) |
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155 { |
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156 ParseTable genParseTable (qout); |
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157 genParseTable(&aut); |
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158 } |
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159 |
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160 return EXIT_SUCCESS; |
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161 } |
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162 |
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163 QString Recognizer::expand (const QString &text) const |
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164 { |
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165 QString code = text; |
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166 |
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167 if (_M_grammar->start != _M_grammar->names.end ()) |
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168 { |
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169 code = code.replace (QLatin1String("$start_id"), QString::number (std::distance (_M_grammar->names.begin (), _M_grammar->start))); |
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170 code = code.replace (QLatin1String("$start"), *_M_grammar->start); |
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171 } |
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172 |
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173 code = code.replace (QLatin1String("$header"), _M_grammar->table_name.toLower () + QLatin1String("_p.h")); |
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174 |
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175 code = code.replace (QLatin1String("$table"), _M_grammar->table_name); |
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176 code = code.replace (QLatin1String("$parser"), _M_grammar->table_name); |
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177 |
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178 if (_M_current_rule != _M_grammar->rules.end ()) |
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179 { |
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180 code = code.replace (QLatin1String("$rule_number"), QString::number (std::distance (_M_grammar->rules.begin (), _M_current_rule))); |
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181 code = code.replace (QLatin1String("$rule"), *_M_current_rule->lhs); |
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182 } |
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183 |
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184 return code; |
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185 } |