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454 lines
14 KiB
454 lines
14 KiB
<?php
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/*
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* This file is part of Twig.
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*
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* (c) Fabien Potencier
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* (c) Armin Ronacher
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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/**
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* Represents a module node.
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*
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* Consider this class as being final. If you need to customize the behavior of
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* the generated class, consider adding nodes to the following nodes: display_start,
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* display_end, constructor_start, constructor_end, and class_end.
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*
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* @author Fabien Potencier <fabien@symfony.com>
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*
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* @final since version 2.4.0
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*/
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class Twig_Node_Module extends Twig_Node
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{
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private $source;
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public function __construct(Twig_Node $body, Twig_Node_Expression $parent = null, Twig_Node $blocks, Twig_Node $macros, Twig_Node $traits, $embeddedTemplates, Twig_Source $source)
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{
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if (__CLASS__ !== get_class($this)) {
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@trigger_error('Overriding '.__CLASS__.' is deprecated since version 2.4.0 and the class will be final in 3.0.', E_USER_DEPRECATED);
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}
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$this->source = $source;
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$nodes = [
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'body' => $body,
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'blocks' => $blocks,
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'macros' => $macros,
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'traits' => $traits,
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'display_start' => new Twig_Node(),
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'display_end' => new Twig_Node(),
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'constructor_start' => new Twig_Node(),
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'constructor_end' => new Twig_Node(),
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'class_end' => new Twig_Node(),
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];
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if (null !== $parent) {
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$nodes['parent'] = $parent;
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}
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// embedded templates are set as attributes so that they are only visited once by the visitors
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parent::__construct($nodes, [
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'index' => null,
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'embedded_templates' => $embeddedTemplates,
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], 1);
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// populate the template name of all node children
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$this->setTemplateName($this->source->getName());
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}
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public function setIndex($index)
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{
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$this->setAttribute('index', $index);
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}
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public function compile(Twig_Compiler $compiler)
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{
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$this->compileTemplate($compiler);
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foreach ($this->getAttribute('embedded_templates') as $template) {
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$compiler->subcompile($template);
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}
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}
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protected function compileTemplate(Twig_Compiler $compiler)
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{
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if (!$this->getAttribute('index')) {
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$compiler->write('<?php');
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}
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$this->compileClassHeader($compiler);
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$this->compileConstructor($compiler);
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$this->compileGetParent($compiler);
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$this->compileDisplay($compiler);
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$compiler->subcompile($this->getNode('blocks'));
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$this->compileMacros($compiler);
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$this->compileGetTemplateName($compiler);
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$this->compileIsTraitable($compiler);
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$this->compileDebugInfo($compiler);
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$this->compileGetSourceContext($compiler);
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$this->compileClassFooter($compiler);
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}
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protected function compileGetParent(Twig_Compiler $compiler)
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{
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if (!$this->hasNode('parent')) {
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return;
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}
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$parent = $this->getNode('parent');
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$compiler
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->write("protected function doGetParent(array \$context)\n", "{\n")
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->indent()
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->addDebugInfo($parent)
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->write('return ')
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;
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if ($parent instanceof Twig_Node_Expression_Constant) {
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$compiler->subcompile($parent);
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} else {
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$compiler
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->raw('$this->loadTemplate(')
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->subcompile($parent)
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->raw(', ')
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->repr($this->source->getName())
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->raw(', ')
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->repr($parent->getTemplateLine())
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->raw(')')
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;
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}
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$compiler
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->raw(";\n")
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->outdent()
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->write("}\n\n")
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;
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}
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protected function compileClassHeader(Twig_Compiler $compiler)
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{
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$compiler
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->write("\n\n")
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// if the template name contains */, add a blank to avoid a PHP parse error
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->write('/* '.str_replace('*/', '* /', $this->source->getName())." */\n")
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->write('class '.$compiler->getEnvironment()->getTemplateClass($this->source->getName(), $this->getAttribute('index')))
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->raw(sprintf(" extends %s\n", $compiler->getEnvironment()->getBaseTemplateClass()))
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->write("{\n")
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->indent()
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->write("private \$source;\n\n")
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;
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}
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protected function compileConstructor(Twig_Compiler $compiler)
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{
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$compiler
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->write("public function __construct(Twig_Environment \$env)\n", "{\n")
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->indent()
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->subcompile($this->getNode('constructor_start'))
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->write("parent::__construct(\$env);\n\n")
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->write("\$this->source = \$this->getSourceContext();\n\n")
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;
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// parent
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if (!$this->hasNode('parent')) {
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$compiler->write("\$this->parent = false;\n\n");
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} elseif (($parent = $this->getNode('parent')) && $parent instanceof Twig_Node_Expression_Constant) {
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$compiler
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->addDebugInfo($parent)
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->write('$this->parent = $this->loadTemplate(')
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->subcompile($parent)
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->raw(', ')
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->repr($this->source->getName())
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->raw(', ')
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->repr($parent->getTemplateLine())
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->raw(");\n")
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;
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}
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$countTraits = count($this->getNode('traits'));
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if ($countTraits) {
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// traits
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foreach ($this->getNode('traits') as $i => $trait) {
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$node = $trait->getNode('template');
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$compiler
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->write(sprintf('$_trait_%s = $this->loadTemplate(', $i))
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->subcompile($node)
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->raw(', ')
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->repr($node->getTemplateName())
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->raw(', ')
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->repr($node->getTemplateLine())
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->raw(");\n")
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;
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$compiler
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->addDebugInfo($trait->getNode('template'))
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->write(sprintf("if (!\$_trait_%s->isTraitable()) {\n", $i))
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->indent()
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->write("throw new Twig_Error_Runtime('Template \"'.")
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->subcompile($trait->getNode('template'))
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->raw(".'\" cannot be used as a trait.', ")
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->repr($node->getTemplateLine())
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->raw(", \$this->source);\n")
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->outdent()
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->write("}\n")
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->write(sprintf("\$_trait_%s_blocks = \$_trait_%s->getBlocks();\n\n", $i, $i))
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;
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foreach ($trait->getNode('targets') as $key => $value) {
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$compiler
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->write(sprintf('if (!isset($_trait_%s_blocks[', $i))
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->string($key)
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->raw("])) {\n")
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->indent()
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->write("throw new Twig_Error_Runtime('Block ")
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->string($key)
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->raw(' is not defined in trait ')
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->subcompile($trait->getNode('template'))
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->raw(".', ")
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->repr($node->getTemplateLine())
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->raw(", \$this->source);\n")
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->outdent()
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->write("}\n\n")
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->write(sprintf('$_trait_%s_blocks[', $i))
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->subcompile($value)
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->raw(sprintf('] = $_trait_%s_blocks[', $i))
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->string($key)
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->raw(sprintf(']; unset($_trait_%s_blocks[', $i))
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->string($key)
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->raw("]);\n\n")
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;
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}
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}
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if ($countTraits > 1) {
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$compiler
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->write("\$this->traits = array_merge(\n")
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->indent()
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;
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for ($i = 0; $i < $countTraits; ++$i) {
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$compiler
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->write(sprintf('$_trait_%s_blocks'.($i == $countTraits - 1 ? '' : ',')."\n", $i))
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;
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}
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$compiler
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->outdent()
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->write(");\n\n")
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;
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} else {
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$compiler
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->write("\$this->traits = \$_trait_0_blocks;\n\n")
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;
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}
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$compiler
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->write("\$this->blocks = array_merge(\n")
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->indent()
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->write("\$this->traits,\n")
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->write("[\n")
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;
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} else {
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$compiler
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->write("\$this->blocks = [\n")
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;
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}
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// blocks
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$compiler
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->indent()
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;
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foreach ($this->getNode('blocks') as $name => $node) {
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$compiler
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->write(sprintf("'%s' => [\$this, 'block_%s'],\n", $name, $name))
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;
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}
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if ($countTraits) {
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$compiler
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->outdent()
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->write("]\n")
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->outdent()
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->write(");\n")
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;
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} else {
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$compiler
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->outdent()
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->write("];\n")
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;
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}
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$compiler
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->outdent()
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->subcompile($this->getNode('constructor_end'))
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->write("}\n\n")
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;
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}
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protected function compileDisplay(Twig_Compiler $compiler)
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{
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$compiler
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->write("protected function doDisplay(array \$context, array \$blocks = [])\n", "{\n")
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->indent()
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->subcompile($this->getNode('display_start'))
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->subcompile($this->getNode('body'))
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;
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if ($this->hasNode('parent')) {
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$parent = $this->getNode('parent');
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$compiler->addDebugInfo($parent);
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if ($parent instanceof Twig_Node_Expression_Constant) {
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$compiler->write('$this->parent');
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} else {
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$compiler->write('$this->getParent($context)');
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}
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$compiler->raw("->display(\$context, array_merge(\$this->blocks, \$blocks));\n");
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}
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$compiler
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->subcompile($this->getNode('display_end'))
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->outdent()
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->write("}\n\n")
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;
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}
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protected function compileClassFooter(Twig_Compiler $compiler)
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{
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$compiler
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->subcompile($this->getNode('class_end'))
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->outdent()
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->write("}\n")
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;
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}
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protected function compileMacros(Twig_Compiler $compiler)
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{
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$compiler->subcompile($this->getNode('macros'));
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}
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protected function compileGetTemplateName(Twig_Compiler $compiler)
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{
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$compiler
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->write("public function getTemplateName()\n", "{\n")
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->indent()
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->write('return ')
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->repr($this->source->getName())
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->raw(";\n")
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->outdent()
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->write("}\n\n")
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;
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}
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protected function compileIsTraitable(Twig_Compiler $compiler)
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{
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// A template can be used as a trait if:
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// * it has no parent
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// * it has no macros
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// * it has no body
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//
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// Put another way, a template can be used as a trait if it
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// only contains blocks and use statements.
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$traitable = !$this->hasNode('parent') && 0 === count($this->getNode('macros'));
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if ($traitable) {
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if ($this->getNode('body') instanceof Twig_Node_Body) {
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$nodes = $this->getNode('body')->getNode(0);
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} else {
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$nodes = $this->getNode('body');
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}
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if (!count($nodes)) {
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$nodes = new Twig_Node([$nodes]);
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}
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foreach ($nodes as $node) {
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if (!count($node)) {
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continue;
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}
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if ($node instanceof Twig_Node_Text && ctype_space($node->getAttribute('data'))) {
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continue;
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}
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if ($node instanceof Twig_Node_BlockReference) {
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continue;
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}
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$traitable = false;
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break;
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}
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}
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if ($traitable) {
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return;
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}
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$compiler
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->write("public function isTraitable()\n", "{\n")
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->indent()
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->write(sprintf("return %s;\n", $traitable ? 'true' : 'false'))
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->outdent()
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->write("}\n\n")
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;
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}
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protected function compileDebugInfo(Twig_Compiler $compiler)
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{
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$compiler
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->write("public function getDebugInfo()\n", "{\n")
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->indent()
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->write(sprintf("return %s;\n", str_replace("\n", '', var_export(array_reverse($compiler->getDebugInfo(), true), true))))
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->outdent()
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->write("}\n\n")
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;
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}
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protected function compileGetSourceContext(Twig_Compiler $compiler)
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{
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$compiler
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->write("public function getSourceContext()\n", "{\n")
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->indent()
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->write('return new Twig_Source(')
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->string($compiler->getEnvironment()->isDebug() ? $this->source->getCode() : '')
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->raw(', ')
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->string($this->source->getName())
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->raw(', ')
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->string($this->source->getPath())
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->raw(");\n")
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->outdent()
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->write("}\n")
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;
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}
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protected function compileLoadTemplate(Twig_Compiler $compiler, $node, $var)
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{
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if ($node instanceof Twig_Node_Expression_Constant) {
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$compiler
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->write(sprintf('%s = $this->loadTemplate(', $var))
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->subcompile($node)
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->raw(', ')
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->repr($node->getTemplateName())
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->raw(', ')
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->repr($node->getTemplateLine())
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->raw(");\n")
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;
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} else {
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throw new LogicException('Trait templates can only be constant nodes.');
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}
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}
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}
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class_alias('Twig_Node_Module', 'Twig\Node\ModuleNode', false);
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