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Macro.php (3691B)

      1 <?php
      2 
      3 /*
      4  * This file is part of Twig.
      5  *
      6  * (c) 2009 Fabien Potencier
      7  *
      8  * For the full copyright and license information, please view the LICENSE
      9  * file that was distributed with this source code.
     10  */
     11 
     12 /**
     13  * Represents a macro node.
     14  *
     15  * @author Fabien Potencier <fabien@symfony.com>
     16  */
     17 class Twig_Node_Macro extends Twig_Node
     18 {
     19     const VARARGS_NAME = 'varargs';
     20 
     21     public function __construct($name, Twig_NodeInterface $body, Twig_NodeInterface $arguments, $lineno, $tag = null)
     22     {
     23         foreach ($arguments as $argumentName => $argument) {
     24             if (self::VARARGS_NAME === $argumentName) {
     25                 throw new Twig_Error_Syntax(sprintf('The argument "%s" in macro "%s" cannot be defined because the variable "%s" is reserved for arbitrary arguments.', self::VARARGS_NAME, $name, self::VARARGS_NAME), $argument->getLine());
     26             }
     27         }
     28 
     29         parent::__construct(array('body' => $body, 'arguments' => $arguments), array('name' => $name), $lineno, $tag);
     30     }
     31 
     32     public function compile(Twig_Compiler $compiler)
     33     {
     34         $compiler
     35             ->addDebugInfo($this)
     36             ->write(sprintf('public function get%s(', $this->getAttribute('name')))
     37         ;
     38 
     39         $count = count($this->getNode('arguments'));
     40         $pos = 0;
     41         foreach ($this->getNode('arguments') as $name => $default) {
     42             $compiler
     43                 ->raw('$__'.$name.'__ = ')
     44                 ->subcompile($default)
     45             ;
     46 
     47             if (++$pos < $count) {
     48                 $compiler->raw(', ');
     49             }
     50         }
     51 
     52         if (PHP_VERSION_ID >= 50600) {
     53             if ($count) {
     54                 $compiler->raw(', ');
     55             }
     56 
     57             $compiler->raw('...$__varargs__');
     58         }
     59 
     60         $compiler
     61             ->raw(")\n")
     62             ->write("{\n")
     63             ->indent()
     64         ;
     65 
     66         $compiler
     67             ->write("\$context = \$this->env->mergeGlobals(array(\n")
     68             ->indent()
     69         ;
     70 
     71         foreach ($this->getNode('arguments') as $name => $default) {
     72             $compiler
     73                 ->addIndentation()
     74                 ->string($name)
     75                 ->raw(' => $__'.$name.'__')
     76                 ->raw(",\n")
     77             ;
     78         }
     79 
     80         $compiler
     81             ->addIndentation()
     82             ->string(self::VARARGS_NAME)
     83             ->raw(' => ')
     84         ;
     85 
     86         if (PHP_VERSION_ID >= 50600) {
     87             $compiler->raw("\$__varargs__,\n");
     88         } else {
     89             $compiler
     90                 ->raw('func_num_args() > ')
     91                 ->repr($count)
     92                 ->raw(' ? array_slice(func_get_args(), ')
     93                 ->repr($count)
     94                 ->raw(") : array(),\n")
     95             ;
     96         }
     97 
     98         $compiler
     99             ->outdent()
    100             ->write("));\n\n")
    101             ->write("\$blocks = array();\n\n")
    102             ->write("ob_start();\n")
    103             ->write("try {\n")
    104             ->indent()
    105             ->subcompile($this->getNode('body'))
    106             ->outdent()
    107             ->write("} catch (Exception \$e) {\n")
    108             ->indent()
    109             ->write("ob_end_clean();\n\n")
    110             ->write("throw \$e;\n")
    111             ->outdent()
    112             ->write("} catch (Throwable \$e) {\n")
    113             ->indent()
    114             ->write("ob_end_clean();\n\n")
    115             ->write("throw \$e;\n")
    116             ->outdent()
    117             ->write("}\n\n")
    118             ->write("return ('' === \$tmp = ob_get_clean()) ? '' : new Twig_Markup(\$tmp, \$this->env->getCharset());\n")
    119             ->outdent()
    120             ->write("}\n\n")
    121         ;
    122     }
    123 }