Version 1

[yaffs-website] / vendor / twig / twig / lib / Twig / Node / For.php

diff --git a/vendor/twig/twig/lib/Twig/Node/For.php b/vendor/twig/twig/lib/Twig/Node/For.php
new file mode 100644 (file)
index 0000000..f93d9c8
--- /dev/null
+++ b/vendor/twig/twig/lib/Twig/Node/For.php
@@ -0,0 +1,111 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) Fabien Potencier
+ * (c) 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.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+class Twig_Node_For extends Twig_Node
+{
+    protected $loop;
+
+    public function __construct(Twig_Node_Expression_AssignName $keyTarget, Twig_Node_Expression_AssignName $valueTarget, Twig_Node_Expression $seq, Twig_Node_Expression $ifexpr = null, Twig_NodeInterface $body, Twig_NodeInterface $else = null, $lineno, $tag = null)
+    {
+        $body = new Twig_Node(array($body, $this->loop = new Twig_Node_ForLoop($lineno, $tag)));
+
+        if (null !== $ifexpr) {
+            $body = new Twig_Node_If(new Twig_Node(array($ifexpr, $body)), null, $lineno, $tag);
+        }
+
+        $nodes = array('key_target' => $keyTarget, 'value_target' => $valueTarget, 'seq' => $seq, 'body' => $body);
+        if (null !== $else) {
+            $nodes['else'] = $else;
+        }
+
+        parent::__construct($nodes, array('with_loop' => true, 'ifexpr' => null !== $ifexpr), $lineno, $tag);
+    }
+
+    public function compile(Twig_Compiler $compiler)
+    {
+        $compiler
+            ->addDebugInfo($this)
+            ->write("\$context['_parent'] = \$context;\n")
+            ->write("\$context['_seq'] = twig_ensure_traversable(")
+            ->subcompile($this->getNode('seq'))
+            ->raw(");\n")
+        ;
+
+        if ($this->hasNode('else')) {
+            $compiler->write("\$context['_iterated'] = false;\n");
+        }
+
+        if ($this->getAttribute('with_loop')) {
+            $compiler
+                ->write("\$context['loop'] = array(\n")
+                ->write("  'parent' => \$context['_parent'],\n")
+                ->write("  'index0' => 0,\n")
+                ->write("  'index'  => 1,\n")
+                ->write("  'first'  => true,\n")
+                ->write(");\n")
+            ;
+
+            if (!$this->getAttribute('ifexpr')) {
+                $compiler
+                    ->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")
+                ;
+            }
+        }
+
+        $this->loop->setAttribute('else', $this->hasNode('else'));
+        $this->loop->setAttribute('with_loop', $this->getAttribute('with_loop'));
+        $this->loop->setAttribute('ifexpr', $this->getAttribute('ifexpr'));
+
+        $compiler
+            ->write("foreach (\$context['_seq'] as ")
+            ->subcompile($this->getNode('key_target'))
+            ->raw(' => ')
+            ->subcompile($this->getNode('value_target'))
+            ->raw(") {\n")
+            ->indent()
+            ->subcompile($this->getNode('body'))
+            ->outdent()
+            ->write("}\n")
+        ;
+
+        if ($this->hasNode('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_intersect_key(\$context, \$_parent) + \$_parent;\n");
+    }
+}