1 | <?php |
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2 | |
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3 | /** |
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4 | * Conditional block, the syntax is very similar to the php one, allowing () || && and |
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5 | * other php operators. Additional operators and their equivalent php syntax are as follow : |
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6 | * |
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7 | * eq -> == |
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8 | * neq or ne -> != |
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9 | * gte or ge -> >= |
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10 | * lte or le -> <= |
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11 | * gt -> > |
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12 | * lt -> < |
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13 | * mod -> % |
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14 | * not -> ! |
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15 | * X is [not] div by Y -> (X % Y) == 0 |
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16 | * X is [not] even [by Y] -> (X % 2) == 0 or ((X/Y) % 2) == 0 |
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17 | * X is [not] odd [by Y] -> (X % 2) != 0 or ((X/Y) % 2) != 0 |
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18 | * |
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19 | * This software is provided 'as-is', without any express or implied warranty. |
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20 | * In no event will the authors be held liable for any damages arising from the use of this software. |
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21 | * |
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22 | * @author Jordi Boggiano <j.boggiano@seld.be> |
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23 | * @copyright Copyright (c) 2008, Jordi Boggiano |
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24 | * @license http://dwoo.org/LICENSE Modified BSD License |
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25 | * @link http://dwoo.org/ |
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26 | * @version 1.0.0 |
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27 | * @date 2008-10-23 |
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28 | * @package Dwoo |
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29 | */ |
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30 | class Dwoo_Plugin_if extends Dwoo_Block_Plugin implements Dwoo_ICompilable_Block, Dwoo_IElseable |
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31 | { |
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32 | public function init(array $rest) |
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33 | { |
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34 | } |
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35 | |
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36 | public static function replaceKeywords(array $params, array $tokens, Dwoo_Compiler $compiler) |
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37 | { |
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38 | $p = array(); |
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39 | |
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40 | reset($params); |
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41 | while (list($k,$v) = each($params)) { |
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42 | $v = (string) $v; |
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43 | if(substr($v, 0, 1) === '"' || substr($v, 0, 1) === '\'') { |
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44 | $vmod = strtolower(substr($v, 1, -1)); |
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45 | } else { |
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46 | $vmod = strtolower($v); |
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47 | } |
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48 | switch($vmod) { |
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49 | |
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50 | case 'and': |
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51 | if ($tokens[$k] === Dwoo_Compiler::T_UNQUOTED_STRING) { |
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52 | $p[] = '&&'; |
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53 | } else { |
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54 | $p[] = $v; |
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55 | } |
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56 | break; |
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57 | case 'or': |
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58 | if ($tokens[$k] === Dwoo_Compiler::T_UNQUOTED_STRING) { |
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59 | $p[] = '||'; |
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60 | } else { |
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61 | $p[] = $v; |
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62 | } |
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63 | break; |
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64 | case 'eq': |
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65 | if ($tokens[$k] === Dwoo_Compiler::T_UNQUOTED_STRING) { |
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66 | $p[] = '=='; |
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67 | } else { |
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68 | $p[] = $v; |
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69 | } |
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70 | break; |
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71 | case 'ne': |
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72 | case 'neq': |
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73 | if ($tokens[$k] === Dwoo_Compiler::T_UNQUOTED_STRING) { |
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74 | $p[] = '!='; |
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75 | } else { |
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76 | $p[] = $v; |
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77 | } |
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78 | break; |
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79 | case 'gte': |
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80 | case 'ge': |
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81 | if ($tokens[$k] === Dwoo_Compiler::T_UNQUOTED_STRING) { |
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82 | $p[] = '>='; |
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83 | } else { |
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84 | $p[] = $v; |
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85 | } |
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86 | break; |
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87 | case 'lte': |
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88 | case 'le': |
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89 | if ($tokens[$k] === Dwoo_Compiler::T_UNQUOTED_STRING) { |
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90 | $p[] = '<='; |
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91 | } else { |
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92 | $p[] = $v; |
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93 | } |
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94 | break; |
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95 | case 'gt': |
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96 | if ($tokens[$k] === Dwoo_Compiler::T_UNQUOTED_STRING) { |
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97 | $p[] = '>'; |
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98 | } else { |
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99 | $p[] = $v; |
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100 | } |
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101 | break; |
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102 | case 'lt': |
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103 | if ($tokens[$k] === Dwoo_Compiler::T_UNQUOTED_STRING) { |
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104 | $p[] = '<'; |
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105 | } else { |
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106 | $p[] = $v; |
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107 | } |
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108 | break; |
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109 | case 'mod': |
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110 | if ($tokens[$k] === Dwoo_Compiler::T_UNQUOTED_STRING) { |
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111 | $p[] = '%'; |
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112 | } else { |
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113 | $p[] = $v; |
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114 | } |
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115 | break; |
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116 | case 'not': |
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117 | if ($tokens[$k] === Dwoo_Compiler::T_UNQUOTED_STRING) { |
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118 | $p[] = '!'; |
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119 | } else { |
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120 | $p[] = $v; |
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121 | } |
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122 | break; |
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123 | case '<>': |
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124 | $p[] = '!='; |
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125 | break; |
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126 | case '==': |
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127 | case '!=': |
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128 | case '>=': |
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129 | case '<=': |
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130 | case '>': |
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131 | case '<': |
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132 | case '===': |
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133 | case '!==': |
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134 | case '%': |
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135 | case '!': |
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136 | $p[] = $vmod; |
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137 | break; |
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138 | case 'is': |
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139 | if ($tokens[$k] !== Dwoo_Compiler::T_UNQUOTED_STRING) { |
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140 | $p[] = $v; |
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141 | break; |
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142 | } |
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143 | if (isset($params[$k+1]) && strtolower(trim($params[$k+1], '"\'')) === 'not' && $tokens[$k+1] === Dwoo_Compiler::T_UNQUOTED_STRING) { |
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144 | $negate = true; |
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145 | next($params); |
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146 | } else { |
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147 | $negate = false; |
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148 | } |
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149 | $ptr = 1+(int)$negate; |
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150 | if ($tokens[$k+$ptr] !== Dwoo_Compiler::T_UNQUOTED_STRING) { |
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151 | break; |
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152 | } |
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153 | if (!isset($params[$k+$ptr])) { |
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154 | $params[$k+$ptr] = ''; |
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155 | } else { |
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156 | $params[$k+$ptr] = trim($params[$k+$ptr], '"\''); |
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157 | } |
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158 | switch($params[$k+$ptr]) { |
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159 | |
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160 | case 'div': |
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161 | if (isset($params[$k+$ptr+1]) && strtolower(trim($params[$k+$ptr+1], '"\'')) === 'by') { |
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162 | $p[] = ' % '.$params[$k+$ptr+2].' '.($negate?'!':'=').'== 0'; |
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163 | next($params); |
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164 | next($params); |
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165 | next($params); |
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166 | } else { |
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167 | throw new Dwoo_Compilation_Exception($compiler, 'If : Syntax error : syntax should be "if $a is [not] div by $b", found '.$params[$k-1].' is '.($negate?'not ':'').'div '.$params[$k+$ptr+1].' '.$params[$k+$ptr+2]); |
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168 | } |
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169 | break; |
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170 | case 'even': |
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171 | $a = array_pop($p); |
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172 | if (isset($params[$k+$ptr+1]) && strtolower(trim($params[$k+$ptr+1], '"\'')) === 'by') { |
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173 | $b = $params[$k+$ptr+2]; |
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174 | $p[] = '('.$a .' / '.$b.') % 2 '.($negate?'!':'=').'== 0'; |
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175 | next($params); |
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176 | next($params); |
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177 | } else { |
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178 | $p[] = $a.' % 2 '.($negate?'!':'=').'== 0'; |
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179 | } |
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180 | next($params); |
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181 | break; |
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182 | case 'odd': |
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183 | $a = array_pop($p); |
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184 | if (isset($params[$k+$ptr+1]) && strtolower(trim($params[$k+$ptr+1], '"\'')) === 'by') { |
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185 | $b = $params[$k+$ptr+2]; |
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186 | $p[] = '('.$a .' / '.$b.') % 2 '.($negate?'=':'!').'== 0'; |
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187 | next($params); |
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188 | next($params); |
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189 | } else { |
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190 | $p[] = $a.' % 2 '.($negate?'=':'!').'== 0'; |
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191 | } |
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192 | next($params); |
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193 | break; |
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194 | default: |
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195 | throw new Dwoo_Compilation_Exception($compiler, 'If : Syntax error : syntax should be "if $a is [not] (div|even|odd) [by $b]", found '.$params[$k-1].' is '.$params[$k+$ptr+1]); |
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196 | |
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197 | } |
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198 | break; |
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199 | default: |
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200 | $p[] = $v; |
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201 | |
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202 | } |
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203 | } |
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204 | |
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205 | return $p; |
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206 | } |
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207 | |
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208 | public static function preProcessing(Dwoo_Compiler $compiler, array $params, $prepend, $append, $type) |
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209 | { |
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210 | return ''; |
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211 | } |
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212 | |
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213 | public static function postProcessing(Dwoo_Compiler $compiler, array $params, $prepend, $append, $content) |
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214 | { |
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215 | $tokens = $compiler->getParamTokens($params); |
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216 | $params = $compiler->getCompiledParams($params); |
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217 | $pre = Dwoo_Compiler::PHP_OPEN.'if ('.implode(' ', self::replaceKeywords($params['*'], $tokens['*'], $compiler)).") {\n".Dwoo_Compiler::PHP_CLOSE; |
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218 | |
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219 | $post = Dwoo_Compiler::PHP_OPEN."\n}".Dwoo_Compiler::PHP_CLOSE; |
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220 | |
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221 | if (isset($params['hasElse'])) { |
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222 | $post .= $params['hasElse']; |
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223 | } |
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224 | |
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225 | return $pre . $content . $post; |
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226 | } |
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227 | } |
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