123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120 |
- <?php
-
- /*
- * This file is part of Twig.
- *
- * (c) 2009 Fabien Potencier
- * (c) 2009 Armin Ronacher
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
- /**
- * Represents a for node.
- *
- * @package twig
- * @author Fabien Potencier <fabien@symfony.com>
- */
- class Twig_Node_For extends Twig_Node
- {
- public function __construct(Twig_Node_Expression_AssignName $keyTarget, Twig_Node_Expression_AssignName $valueTarget, Twig_Node_Expression $seq, Twig_NodeInterface $body, Twig_NodeInterface $else = null, $lineno, $tag = null)
- {
- parent::__construct(array('key_target' => $keyTarget, 'value_target' => $valueTarget, 'seq' => $seq, 'body' => $body, 'else' => $else), array('with_loop' => true), $lineno, $tag);
- }
-
- /**
- * Compiles the node to PHP.
- *
- * @param Twig_Compiler A Twig_Compiler instance
- */
- public function compile(Twig_Compiler $compiler)
- {
- $compiler
- ->addDebugInfo($this)
- // the (array) cast bypasses a PHP 5.2.6 bug
- ->write("\$context['_parent'] = (array) \$context;\n")
- ->write("\$context['_seq'] = twig_ensure_traversable(")
- ->subcompile($this->getNode('seq'))
- ->raw(");\n")
- ;
-
- if (null !== $this->getNode('else')) {
- $compiler->write("\$context['_iterated'] = false;\n");
- }
-
- if ($this->getAttribute('with_loop')) {
- $compiler
- ->write("\$context['loop'] = array(\n")
- ->write(" 'parent' => \$context['_parent'],\n")
- ->write(" 'index0' => 0,\n")
- ->write(" 'index' => 1,\n")
- ->write(" 'first' => true,\n")
- ->write(");\n")
- ->write("if (is_array(\$context['_seq']) || (is_object(\$context['_seq']) && \$context['_seq'] instanceof Countable)) {\n")
- ->indent()
- ->write("\$length = count(\$context['_seq']);\n")
- ->write("\$context['loop']['revindex0'] = \$length - 1;\n")
- ->write("\$context['loop']['revindex'] = \$length;\n")
- ->write("\$context['loop']['length'] = \$length;\n")
- ->write("\$context['loop']['last'] = 1 === \$length;\n")
- ->outdent()
- ->write("}\n")
- ;
- }
-
- $compiler
- ->write("foreach (\$context['_seq'] as ")
- ->subcompile($this->getNode('key_target'))
- ->raw(" => ")
- ->subcompile($this->getNode('value_target'))
- ->raw(") {\n")
- ->indent()
- ;
-
- $compiler->subcompile($this->getNode('body'));
-
- if (null !== $this->getNode('else')) {
- $compiler->write("\$context['_iterated'] = true;\n");
- }
-
- if ($this->getAttribute('with_loop')) {
- $compiler
- ->write("++\$context['loop']['index0'];\n")
- ->write("++\$context['loop']['index'];\n")
- ->write("\$context['loop']['first'] = false;\n")
- ->write("if (isset(\$context['loop']['length'])) {\n")
- ->indent()
- ->write("--\$context['loop']['revindex0'];\n")
- ->write("--\$context['loop']['revindex'];\n")
- ->write("\$context['loop']['last'] = 0 === \$context['loop']['revindex0'];\n")
- ->outdent()
- ->write("}\n")
- ;
- }
-
- $compiler
- ->outdent()
- ->write("}\n")
- ;
-
- if (null !== $this->getNode('else')) {
- $compiler
- ->write("if (!\$context['_iterated']) {\n")
- ->indent()
- ->subcompile($this->getNode('else'))
- ->outdent()
- ->write("}\n")
- ;
- }
-
- $compiler->write("\$_parent = \$context['_parent'];\n");
-
- // remove some "private" loop variables (needed for nested loops)
- $compiler->write('unset($context[\'_seq\'], $context[\'_iterated\'], $context[\''.$this->getNode('key_target')->getAttribute('name').'\'], $context[\''.$this->getNode('value_target')->getAttribute('name').'\'], $context[\'_parent\'], $context[\'loop\']);'."\n");
-
- // keep the values set in the inner context for variables defined in the outer context
- $compiler->write("\$context = array_merge(\$_parent, array_intersect_key(\$context, \$_parent));\n");
- }
- }
|