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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 #include "Literals.h" |
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62 #include <cstring> |
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63 #include <algorithm> |
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64 #include <iostream> |
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65 |
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66 using namespace CPlusPlus; |
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67 |
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68 //////////////////////////////////////////////////////////////////////////////// |
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69 Literal::Literal(const char *chars, unsigned size) |
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70 : _index(0), _next(0) |
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71 { |
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72 _chars = new char[size + 1]; |
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73 |
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74 std::strncpy(_chars, chars, size); |
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75 _chars[size] = '\0'; |
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76 _size = size; |
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77 |
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78 _hashCode = hashCode(_chars, _size); |
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79 } |
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80 |
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81 Literal::~Literal() |
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82 { delete[] _chars; } |
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83 |
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84 bool Literal::isEqualTo(const Literal *other) const |
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85 { |
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86 if (! other) |
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87 return false; |
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88 else if (this == other) |
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89 return true; |
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90 else if (hashCode() != other->hashCode()) |
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91 return false; |
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92 else if (size() != other->size()) |
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93 return false; |
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94 return ! std::strcmp(chars(), other->chars()); |
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95 } |
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96 |
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97 Literal::iterator Literal::begin() const |
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98 { return _chars; } |
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99 |
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100 Literal::iterator Literal::end() const |
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101 { return _chars + _size; } |
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102 |
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103 const char *Literal::chars() const |
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104 { return _chars; } |
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105 |
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106 char Literal::at(unsigned index) const |
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107 { return _chars[index]; } |
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108 |
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109 unsigned Literal::size() const |
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110 { return _size; } |
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111 |
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112 unsigned Literal::hashCode() const |
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113 { return _hashCode; } |
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114 |
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115 unsigned Literal::hashCode(const char *chars, unsigned size) |
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116 { |
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117 unsigned h = 0; |
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118 for (unsigned i = 0; i < size; ++i) |
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119 h = (h >> 5) - h + chars[i]; |
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120 return h; |
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121 } |
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122 |
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123 //////////////////////////////////////////////////////////////////////////////// |
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124 StringLiteral::StringLiteral(const char *chars, unsigned size) |
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125 : Literal(chars, size) |
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126 { } |
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127 |
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128 StringLiteral::~StringLiteral() |
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129 { } |
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130 |
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131 //////////////////////////////////////////////////////////////////////////////// |
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132 enum { |
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133 NumericLiteralIsChar, |
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134 NumericLiteralIsWideChar, |
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135 NumericLiteralIsInt, |
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136 NumericLiteralIsFloat, |
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137 NumericLiteralIsDouble, |
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138 NumericLiteralIsLongDouble, |
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139 NumericLiteralIsLong, |
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140 NumericLiteralIsLongLong |
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141 }; |
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142 |
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143 NumericLiteral::NumericLiteral(const char *chars, unsigned size) |
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144 : Literal(chars, size), _flags(0) |
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145 { |
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146 f._type = NumericLiteralIsInt; |
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147 |
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148 if (chars[0] == '\'') { |
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149 f._type = NumericLiteralIsChar; |
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150 } else if (size > 1 && chars[0] == 'L' && chars[1] == '\'') { |
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151 f._type = NumericLiteralIsWideChar; |
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152 } else if (size > 1 && chars[0] == '0' && (chars[1] == 'x' || chars[1] == 'X')) { |
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153 f._isHex = true; |
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154 } else { |
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155 const char *begin = chars; |
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156 const char *end = begin + size; |
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157 |
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158 bool done = false; |
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159 const char *it = end - 1; |
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160 |
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161 for (; it != begin - 1 && ! done; --it) { |
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162 switch (*it) { |
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163 case 'l': case 'L': // long suffix |
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164 case 'u': case 'U': // unsigned suffix |
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165 case 'f': case 'F': // floating suffix |
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166 break; |
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167 |
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168 default: |
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169 done = true; |
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170 break; |
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171 } // switch |
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172 } |
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173 |
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174 for (const char *dot = it; it != begin - 1; --it) { |
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175 if (*dot == '.') |
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176 f._type = NumericLiteralIsDouble; |
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177 } |
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178 |
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179 for (++it; it != end; ++it) { |
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180 if (*it == 'l' || *it == 'L') { |
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181 if (f._type == NumericLiteralIsDouble) { |
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182 f._type = NumericLiteralIsLongDouble; |
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183 } else if (it + 1 != end && (it[1] == 'l' || it[1] == 'L')) { |
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184 ++it; |
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185 f._type = NumericLiteralIsLongLong; |
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186 } else { |
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187 f._type = NumericLiteralIsLong; |
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188 } |
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189 } else if (*it == 'f' || *it == 'F') { |
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190 f._type = NumericLiteralIsFloat; |
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191 } else if (*it == 'u' || *it == 'U') { |
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192 f._isUnsigned = true; |
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193 } |
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194 } |
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195 } |
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196 } |
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197 |
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198 NumericLiteral::~NumericLiteral() |
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199 { } |
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200 |
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201 bool NumericLiteral::isHex() const |
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202 { return f._isHex; } |
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203 |
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204 bool NumericLiteral::isUnsigned() const |
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205 { return f._isUnsigned; } |
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206 |
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207 bool NumericLiteral::isChar() const |
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208 { return f._type == NumericLiteralIsChar; } |
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209 |
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210 bool NumericLiteral::isWideChar() const |
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211 { return f._type == NumericLiteralIsWideChar; } |
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212 |
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213 bool NumericLiteral::isInt() const |
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214 { return f._type == NumericLiteralIsInt; } |
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215 |
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216 bool NumericLiteral::isFloat() const |
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217 { return f._type == NumericLiteralIsFloat; } |
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218 |
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219 bool NumericLiteral::isDouble() const |
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220 { return f._type == NumericLiteralIsDouble; } |
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221 |
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222 bool NumericLiteral::isLongDouble() const |
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223 { return f._type == NumericLiteralIsLongDouble; } |
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224 |
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225 bool NumericLiteral::isLong() const |
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226 { return f._type == NumericLiteralIsLong; } |
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227 |
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228 bool NumericLiteral::isLongLong() const |
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229 { return f._type == NumericLiteralIsLongLong; } |
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230 |
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231 //////////////////////////////////////////////////////////////////////////////// |
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232 Identifier::Identifier(const char *chars, unsigned size) |
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233 : Literal(chars, size) |
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234 { } |
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235 |
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236 Identifier::~Identifier() |
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237 { } |
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238 |