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   1  <?php
   2  
   3  /*
   4   * This file is part of Twig.
   5   *
   6   * (c) Fabien Potencier
   7   * (c) Armin Ronacher
   8   *
   9   * For the full copyright and license information, please view the LICENSE
  10   * file that was distributed with this source code.
  11   */
  12  
  13  namespace Twig\Node;
  14  
  15  use Twig\Compiler;
  16  use Twig\Node\Expression\AbstractExpression;
  17  
  18  /**
  19   * Represents an include node.
  20   *
  21   * @author Fabien Potencier <fabien@symfony.com>
  22   */
  23  class IncludeNode extends Node implements NodeOutputInterface
  24  {
  25      public function __construct(AbstractExpression $expr, ?AbstractExpression $variables, bool $only, bool $ignoreMissing, int $lineno, string $tag = null)
  26      {
  27          $nodes = ['expr' => $expr];
  28          if (null !== $variables) {
  29              $nodes['variables'] = $variables;
  30          }
  31  
  32          parent::__construct($nodes, ['only' => (bool) $only, 'ignore_missing' => (bool) $ignoreMissing], $lineno, $tag);
  33      }
  34  
  35      public function compile(Compiler $compiler)
  36      {
  37          $compiler->addDebugInfo($this);
  38  
  39          if ($this->getAttribute('ignore_missing')) {
  40              $template = $compiler->getVarName();
  41  
  42              $compiler
  43                  ->write(sprintf("$%s = null;\n", $template))
  44                  ->write("try {\n")
  45                  ->indent()
  46                  ->write(sprintf('$%s = ', $template))
  47              ;
  48  
  49              $this->addGetTemplate($compiler);
  50  
  51              $compiler
  52                  ->raw(";\n")
  53                  ->outdent()
  54                  ->write("} catch (LoaderError \$e) {\n")
  55                  ->indent()
  56                  ->write("// ignore missing template\n")
  57                  ->outdent()
  58                  ->write("}\n")
  59                  ->write(sprintf("if ($%s) {\n", $template))
  60                  ->indent()
  61                  ->write(sprintf('$%s->display(', $template))
  62              ;
  63              $this->addTemplateArguments($compiler);
  64              $compiler
  65                  ->raw(");\n")
  66                  ->outdent()
  67                  ->write("}\n")
  68              ;
  69          } else {
  70              $this->addGetTemplate($compiler);
  71              $compiler->raw('->display(');
  72              $this->addTemplateArguments($compiler);
  73              $compiler->raw(");\n");
  74          }
  75      }
  76  
  77      protected function addGetTemplate(Compiler $compiler)
  78      {
  79          $compiler
  80              ->write('$this->loadTemplate(')
  81              ->subcompile($this->getNode('expr'))
  82              ->raw(', ')
  83              ->repr($this->getTemplateName())
  84              ->raw(', ')
  85              ->repr($this->getTemplateLine())
  86              ->raw(')')
  87          ;
  88      }
  89  
  90      protected function addTemplateArguments(Compiler $compiler)
  91      {
  92          if (!$this->hasNode('variables')) {
  93              $compiler->raw(false === $this->getAttribute('only') ? '$context' : '[]');
  94          } elseif (false === $this->getAttribute('only')) {
  95              $compiler
  96                  ->raw('twig_array_merge($context, ')
  97                  ->subcompile($this->getNode('variables'))
  98                  ->raw(')')
  99              ;
 100          } else {
 101              $compiler->raw('twig_to_array(');
 102              $compiler->subcompile($this->getNode('variables'));
 103              $compiler->raw(')');
 104          }
 105      }
 106  }
 107  
 108  class_alias('Twig\Node\IncludeNode', 'Twig_Node_Include');