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<?php |
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/** |
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* Copyright (c) 2013-2016 |
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* |
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* @category Library |
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* @package Dwoo\Plugins\Blocks |
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* @author Jordi Boggiano <[email protected]> |
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* @author David Sanchez <[email protected]> |
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* @copyright 2008-2013 Jordi Boggiano |
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* @copyright 2013-2016 David Sanchez |
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* @license http://dwoo.org/LICENSE Modified BSD License |
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* @version 1.3.0 |
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* @date 2016-09-19 |
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* @link http://dwoo.org/ |
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*/ |
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namespace Dwoo\Plugins\Blocks; |
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use Dwoo\Compiler; |
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use Dwoo\IElseable; |
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use Dwoo\Block\Plugin as BlockPlugin; |
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use Dwoo\ICompilable\Block as ICompilableBlock; |
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use Dwoo\Compilation\Exception as CompilationException; |
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/** |
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* Conditional block, the syntax is very similar to the php one, allowing () || && and |
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* other php operators. Additional operators and their equivalent php syntax are as follow :. |
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* eq -> == |
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* neq or ne -> != |
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* gte or ge -> >= |
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* lte or le -> <= |
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* gt -> > |
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* lt -> < |
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* mod -> % |
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* not -> ! |
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* X is [not] div by Y -> (X % Y) == 0 |
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* X is [not] even [by Y] -> (X % 2) == 0 or ((X/Y) % 2) == 0 |
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* X is [not] odd [by Y] -> (X % 2) != 0 or ((X/Y) % 2) != 0 |
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* This software is provided 'as-is', without any express or implied warranty. |
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* In no event will the authors be held liable for any damages arising from the use of this software. |
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*/ |
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class PluginIf extends BlockPlugin implements ICompilableBlock, IElseable |
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{ |
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/** |
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* @param array $rest |
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*/ |
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public function init(array $rest) |
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{ |
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} |
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/** |
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* @param array $params |
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* @param array $tokens |
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* @param Compiler $compiler |
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* |
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* @return array |
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* @throws CompilationException |
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*/ |
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public static function replaceKeywords(array $params, array $tokens, Compiler $compiler) |
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{ |
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$p = array(); |
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reset($params); |
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while (list($k, $v) = each($params)) { |
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$v = (string)$v; |
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if (substr($v, 0, 1) === '"' || substr($v, 0, 1) === '\'') { |
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$vmod = strtolower(substr($v, 1, - 1)); |
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} else { |
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$vmod = strtolower($v); |
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} |
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switch ($vmod) { |
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case 'and': |
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if ($tokens[$k] === Compiler::T_UNQUOTED_STRING) { |
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$p[] = '&&'; |
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} else { |
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$p[] = $v; |
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} |
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break; |
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case 'or': |
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if ($tokens[$k] === Compiler::T_UNQUOTED_STRING) { |
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$p[] = '||'; |
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} else { |
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$p[] = $v; |
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} |
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break; |
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case 'xor': |
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if ($tokens[$k] === Compiler::T_UNQUOTED_STRING) { |
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$p[] = '^'; |
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} else { |
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$p[] = $v; |
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} |
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break; |
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case 'eq': |
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if ($tokens[$k] === Compiler::T_UNQUOTED_STRING) { |
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$p[] = '=='; |
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} else { |
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$p[] = $v; |
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} |
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break; |
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case 'ne': |
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case 'neq': |
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if ($tokens[$k] === Compiler::T_UNQUOTED_STRING) { |
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$p[] = '!='; |
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} else { |
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$p[] = $v; |
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} |
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break; |
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case 'gte': |
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case 'ge': |
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if ($tokens[$k] === Compiler::T_UNQUOTED_STRING) { |
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$p[] = '>='; |
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} else { |
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$p[] = $v; |
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} |
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break; |
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case 'lte': |
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case 'le': |
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if ($tokens[$k] === Compiler::T_UNQUOTED_STRING) { |
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$p[] = '<='; |
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} else { |
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$p[] = $v; |
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} |
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break; |
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case 'gt': |
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if ($tokens[$k] === Compiler::T_UNQUOTED_STRING) { |
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$p[] = '>'; |
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} else { |
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$p[] = $v; |
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} |
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break; |
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case 'lt': |
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if ($tokens[$k] === Compiler::T_UNQUOTED_STRING) { |
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$p[] = '<'; |
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} else { |
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$p[] = $v; |
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} |
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break; |
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case 'mod': |
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if ($tokens[$k] === Compiler::T_UNQUOTED_STRING) { |
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$p[] = '%'; |
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} else { |
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$p[] = $v; |
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} |
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break; |
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case 'not': |
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if ($tokens[$k] === Compiler::T_UNQUOTED_STRING) { |
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$p[] = '!'; |
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} else { |
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$p[] = $v; |
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} |
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break; |
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case '<>': |
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$p[] = '!='; |
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break; |
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case '==': |
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case '!=': |
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case '>=': |
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case '<=': |
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case '>': |
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case '<': |
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case '===': |
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case '!==': |
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case '%': |
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case '!': |
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case '^': |
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$p[] = $vmod; |
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break; |
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case 'is': |
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if ($tokens[$k] !== Compiler::T_UNQUOTED_STRING) { |
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$p[] = $v; |
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break; |
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} |
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if (isset($params[$k + 1]) && strtolower(trim($params[$k + 1], '"\'')) === 'not' && $tokens[$k + 1] === Compiler::T_UNQUOTED_STRING) { |
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$negate = true; |
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next($params); |
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} else { |
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$negate = false; |
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} |
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$ptr = 1 + (int)$negate; |
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if ($tokens[$k + $ptr] !== Compiler::T_UNQUOTED_STRING) { |
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break; |
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} |
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if (!isset($params[$k + $ptr])) { |
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$params[$k + $ptr] = ''; |
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} else { |
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$params[$k + $ptr] = trim($params[$k + $ptr], '"\''); |
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} |
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switch ($params[$k + $ptr]) { |
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case 'div': |
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if (isset($params[$k + $ptr + 1]) && strtolower(trim($params[$k + $ptr + 1], '"\'')) === 'by') { |
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$p[] = ' % ' . $params[$k + $ptr + 2] . ' ' . ($negate ? '!' : '=') . '== 0'; |
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next($params); |
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next($params); |
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next($params); |
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} else { |
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throw new CompilationException($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 + $ptr + 2]); |
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199
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} |
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break; |
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case 'even': |
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$a = array_pop($p); |
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if (isset($params[$k + $ptr + 1]) && strtolower(trim($params[$k + $ptr + 1], '"\'')) === 'by') { |
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$b = $params[$k + $ptr + 2]; |
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$p[] = '(' . $a . ' / ' . $b . ') % 2 ' . ($negate ? '!' : '=') . '== 0'; |
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next($params); |
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next($params); |
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} else { |
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$p[] = $a . ' % 2 ' . ($negate ? '!' : '=') . '== 0'; |
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} |
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next($params); |
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break; |
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case 'odd': |
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$a = array_pop($p); |
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if (isset($params[$k + $ptr + 1]) && strtolower(trim($params[$k + $ptr + 1], '"\'')) === 'by') { |
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$b = $params[$k + $ptr + 2]; |
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$p[] = '(' . $a . ' / ' . $b . ') % 2 ' . ($negate ? '=' : '!') . '== 0'; |
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next($params); |
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next($params); |
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220
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} else { |
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$p[] = $a . ' % 2 ' . ($negate ? '=' : '!') . '== 0'; |
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} |
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next($params); |
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break; |
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default: |
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throw new CompilationException($compiler, 'If : Syntax error : syntax should be "if $a is [not] (div|even|odd) [by $b]", found ' . $params[$k - 1] . ' is ' . $params[$k + $ptr + 1]); |
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} |
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break; |
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default: |
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$p[] = $v; |
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} |
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} |
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234
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return $p; |
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235
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} |
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237
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/** |
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* @param Compiler $compiler |
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239
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* @param array $params |
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240
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* @param string $prepend |
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241
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* @param string $append |
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242
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* @param string $type |
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243
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* |
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244
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* @return string |
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245
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*/ |
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public static function preProcessing(Compiler $compiler, array $params, $prepend, $append, $type) |
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{ |
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return ''; |
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249
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} |
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250
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251
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/** |
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252
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* @param Compiler $compiler |
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253
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* @param array $params |
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254
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* @param string $prepend |
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255
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* @param string $append |
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256
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* @param string $content |
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257
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* |
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258
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* @return string |
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259
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*/ |
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260
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public static function postProcessing(Compiler $compiler, array $params, $prepend, $append, $content) |
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{ |
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262
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$tokens = $compiler->getParamTokens($params); |
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263
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$params = $compiler->getCompiledParams($params); |
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264
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$pre = Compiler::PHP_OPEN . 'if (' . implode(' ', self::replaceKeywords($params['*'], $tokens['*'], $compiler)) . ") {\n" . Compiler::PHP_CLOSE; |
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265
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266
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$post = Compiler::PHP_OPEN . "\n}" . Compiler::PHP_CLOSE; |
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267
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268
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if (isset($params['hasElse'])) { |
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$post .= $params['hasElse']; |
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270
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} |
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271
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272
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return $pre . $content . $post; |
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273
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} |
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274
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} |
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JuKu /
JuKuCMS
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This check looks for parameters that have been defined for a function or method, but which are not used in the method body.