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<?php
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/*
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* This file is part of Twig.
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*
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* (c) 2009 Fabien Potencier
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* (c) 2009 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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* @package twig
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* @author Fabien Potencier <fabien@symfony.com>
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*/
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class Twig_Node_Module extends Twig_Node
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{
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public function __construct(Twig_NodeInterface $body, Twig_Node_Expression $parent = null, Twig_NodeInterface $blocks, Twig_NodeInterface $macros, Twig_NodeInterface $traits, $filename)
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{
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parent::__construct(array('parent' => $parent, 'body' => $body, 'blocks' => $blocks, 'macros' => $macros, 'traits' => $traits), array('filename' => $filename), 1);
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}
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/**
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* Compiles the node to PHP.
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*
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* @param Twig_Compiler A Twig_Compiler instance
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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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}
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protected function compileTemplate(Twig_Compiler $compiler)
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{
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$this->compileClassHeader($compiler);
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if (count($this->getNode('blocks')) || count($this->getNode('traits')) || null === $this->getNode('parent') || $this->getNode('parent') instanceof Twig_Node_Expression_Constant) {
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$this->compileConstructor($compiler);
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}
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$this->compileGetParent($compiler);
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$this->compileDisplayHeader($compiler);
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$this->compileDisplayBody($compiler);
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$this->compileDisplayFooter($compiler);
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$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->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 (null === $this->getNode('parent')) {
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return;
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}
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$compiler
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->write("protected function doGetParent(array \$context)\n", "{\n")
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->indent()
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->write("return ")
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;
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if ($this->getNode('parent') instanceof Twig_Node_Expression_Constant) {
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$compiler->subcompile($this->getNode('parent'));
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} else {
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$compiler
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->raw("\$this->env->resolveTemplate(")
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->subcompile($this->getNode('parent'))
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->raw(")")
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;
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}
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$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 compileDisplayBody(Twig_Compiler $compiler)
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{
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$compiler->subcompile($this->getNode('body'));
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if (null !== $this->getNode('parent')) {
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if ($this->getNode('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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}
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protected function compileClassHeader(Twig_Compiler $compiler)
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{
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$compiler
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->write("<?php\n\n")
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// if the filename contains */, add a blank to avoid a PHP parse error
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->write("/* ".str_replace('*/', '* /', $this->getAttribute('filename'))." */\n")
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->write('class '.$compiler->getEnvironment()->getTemplateClass($this->getAttribute('filename')))
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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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;
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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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->write("parent::__construct(\$env);\n\n")
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;
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// parent
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if (null === $this->getNode('parent')) {
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$compiler->write("\$this->parent = false;\n\n");
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} elseif ($this->getNode('parent') instanceof Twig_Node_Expression_Constant) {
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$compiler
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->write("\$this->parent = \$this->env->loadTemplate(")
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->subcompile($this->getNode('parent'))
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->raw(");\n\n")
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;
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}
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$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 => $trait) {
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$this->compileLoadTemplate($compiler, $trait->getNode('template'), sprintf('$_trait_%s', $i));
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$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.');\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("\$_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("array(\n")
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;
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} else {
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$compiler
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->write("\$this->blocks = array(\n")
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;
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}
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// blocks
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$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' => array(\$this, 'block_%s'),\n", $name, $name))
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;
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}
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if ($countTraits) {
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$compiler
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->outdent()
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->write(")\n")
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;
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}
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$compiler
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->outdent()
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->write(");\n")
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->outdent()
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->write("}\n\n");
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;
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}
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protected function compileDisplayHeader(Twig_Compiler $compiler)
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{
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$compiler
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->write("protected function doDisplay(array \$context, array \$blocks = array())\n", "{\n")
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->indent()
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;
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}
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protected function compileDisplayFooter(Twig_Compiler $compiler)
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{
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$compiler
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->outdent()
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->write("}\n\n")
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;
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}
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protected function compileClassFooter(Twig_Compiler $compiler)
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{
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$compiler
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->outdent()
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->write("}\n")
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;
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}
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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->getAttribute('filename'))
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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 = null === $this->getNode('parent') && 0 === count($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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$nodes = new Twig_Node(array($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")
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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->env->loadTemplate(", $var))
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->subcompile($node)
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->raw(");\n")
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;
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} else {
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$compiler
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->write(sprintf("%s = ", $var))
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->subcompile($node)
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->raw(";\n")
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->write(sprintf("if (!%s", $var))
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->raw(" instanceof Twig_Template) {\n")
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->indent()
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->write(sprintf("%s = \$this->env->loadTemplate(%s);\n", $var, $var))
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->outdent()
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->write("}\n")
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;
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}
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}
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}
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