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<?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 module node.
*
* Consider this class as being final. If you need to customize the behavior of
* the generated class, consider adding nodes to the following nodes: display_start,
* display_end, constructor_start, constructor_end, and class_end.
*
* @author Fabien Potencier <fabien@symfony.com>
*/
class Twig_Node_Module extends Twig_Node
{
private $source;
public function __construct(Twig_NodeInterface $body, Twig_Node_Expression $parent = null, Twig_NodeInterface $blocks, Twig_NodeInterface $macros, Twig_NodeInterface $traits, $embeddedTemplates, $name, $source = '')
{
if (!$name instanceof Twig_Source) {
@trigger_error(sprintf('Passing a string as the $name argument of %s() is deprecated since version 1.27. Pass a Twig_Source instance instead.', __METHOD__), E_USER_DEPRECATED);
$this->source = new Twig_Source($source, $name);
} else {
$this->source = $name;
}
$nodes = array(
'body' => $body,
'blocks' => $blocks,
'macros' => $macros,
'traits' => $traits,
'display_start' => new Twig_Node(),
'display_end' => new Twig_Node(),
'constructor_start' => new Twig_Node(),
'constructor_end' => new Twig_Node(),
'class_end' => new Twig_Node(),
);
if (null !== $parent) {
$nodes['parent'] = $parent;
}
// embedded templates are set as attributes so that they are only visited once by the visitors
parent::__construct($nodes, array(
// source to be remove in 2.0
'source' => $this->source->getCode(),
// filename to be remove in 2.0 (use getTemplateName() instead)
'filename' => $this->source->getName(),
'index' => null,
'embedded_templates' => $embeddedTemplates,
), 1);
// populate the template name of all node children
$this->setTemplateName($this->source->getName());
}
public function setIndex($index)
{
$this->setAttribute('index', $index);
}
public function compile(Twig_Compiler $compiler)
{
$this->compileTemplate($compiler);
foreach ($this->getAttribute('embedded_templates') as $template) {
$compiler->subcompile($template);
}
}
protected function compileTemplate(Twig_Compiler $compiler)
{
if (!$this->getAttribute('index')) {
$compiler->write('<?php');
}
$this->compileClassHeader($compiler);
if (
count($this->getNode('blocks'))
|| count($this->getNode('traits'))
|| !$this->hasNode('parent')
|| $this->getNode('parent') instanceof Twig_Node_Expression_Constant
|| count($this->getNode('constructor_start'))
|| count($this->getNode('constructor_end'))
) {
$this->compileConstructor($compiler);
}
$this->compileGetParent($compiler);
$this->compileDisplay($compiler);
$compiler->subcompile($this->getNode('blocks'));
$this->compileMacros($compiler);
$this->compileGetTemplateName($compiler);
$this->compileIsTraitable($compiler);
$this->compileDebugInfo($compiler);
$this->compileGetSource($compiler);
$this->compileGetSourceContext($compiler);
$this->compileClassFooter($compiler);
}
protected function compileGetParent(Twig_Compiler $compiler)
{
if (!$this->hasNode('parent')) {
return;
}
$parent = $this->getNode('parent');
$compiler
->write("protected function doGetParent(array \$context)\n", "{\n")
->indent()
->addDebugInfo($parent)
->write('return ')
;
if ($parent instanceof Twig_Node_Expression_Constant) {
$compiler->subcompile($parent);
} else {
$compiler
->raw('$this->loadTemplate(')
->subcompile($parent)
->raw(', ')
->repr($this->source->getName())
->raw(', ')
->repr($parent->getTemplateLine())
->raw(')')
;
}
$compiler
->raw(";\n")
->outdent()
->write("}\n\n")
;
}
protected function compileClassHeader(Twig_Compiler $compiler)
{
$compiler
->write("\n\n")
// if the template name contains */, add a blank to avoid a PHP parse error
->write('/* '.str_replace('*/', '* /', $this->source->getName())." */\n")
->write('class '.$compiler->getEnvironment()->getTemplateClass($this->source->getName(), $this->getAttribute('index')))
->raw(sprintf(" extends %s\n", $compiler->getEnvironment()->getBaseTemplateClass()))
->write("{\n")
->indent()
;
}
protected function compileConstructor(Twig_Compiler $compiler)
{
$compiler
->write("public function __construct(Twig_Environment \$env)\n", "{\n")
->indent()
->subcompile($this->getNode('constructor_start'))
->write("parent::__construct(\$env);\n\n")
;
// parent
if (!$this->hasNode('parent')) {
$compiler->write("\$this->parent = false;\n\n");
} elseif (($parent = $this->getNode('parent')) && $parent instanceof Twig_Node_Expression_Constant) {
$compiler
->addDebugInfo($parent)
->write('$this->parent = $this->loadTemplate(')
->subcompile($parent)
->raw(', ')
->repr($this->source->getName())
->raw(', ')
->repr($parent->getTemplateLine())
->raw(");\n")
;
}
$countTraits = count($this->getNode('traits'));
if ($countTraits) {
// traits
foreach ($this->getNode('traits') as $i => $trait) {
$this->compileLoadTemplate($compiler, $trait->getNode('template'), sprintf('$_trait_%s', $i));
$compiler
->addDebugInfo($trait->getNode('template'))
->write(sprintf("if (!\$_trait_%s->isTraitable()) {\n", $i))
->indent()
->write("throw new Twig_Error_Runtime('Template \"'.")
->subcompile($trait->getNode('template'))
->raw(".'\" cannot be used as a trait.');\n")
->outdent()
->write("}\n")
->write(sprintf("\$_trait_%s_blocks = \$_trait_%s->getBlocks();\n\n", $i, $i))
;
foreach ($trait->getNode('targets') as $key => $value) {
$compiler
->write(sprintf('if (!isset($_trait_%s_blocks[', $i))
->string($key)
->raw("])) {\n")
->indent()
->write("throw new Twig_Error_Runtime(sprintf('Block ")
->string($key)
->raw(' is not defined in trait ')
->subcompile($trait->getNode('template'))
->raw(".'));\n")
->outdent()
->write("}\n\n")
->write(sprintf('$_trait_%s_blocks[', $i))
->subcompile($value)
->raw(sprintf('] = $_trait_%s_blocks[', $i))
->string($key)
->raw(sprintf(']; unset($_trait_%s_blocks[', $i))
->string($key)
->raw("]);\n\n")
;
}
}
if ($countTraits > 1) {
$compiler
->write("\$this->traits = array_merge(\n")
->indent()
;
for ($i = 0; $i < $countTraits; ++$i) {
$compiler
->write(sprintf('$_trait_%s_blocks'.($i == $countTraits - 1 ? '' : ',')."\n", $i))
;
}
$compiler
->outdent()
->write(");\n\n")
;
} else {
$compiler
->write("\$this->traits = \$_trait_0_blocks;\n\n")
;
}
$compiler
->write("\$this->blocks = array_merge(\n")
->indent()
->write("\$this->traits,\n")
->write("array(\n")
;
} else {
$compiler
->write("\$this->blocks = array(\n")
;
}
// blocks
$compiler
->indent()
;
foreach ($this->getNode('blocks') as $name => $node) {
$compiler
->write(sprintf("'%s' => array(\$this, 'block_%s'),\n", $name, $name))
;
}
if ($countTraits) {
$compiler
->outdent()
->write(")\n")
;
}
$compiler
->outdent()
->write(");\n")
->outdent()
->subcompile($this->getNode('constructor_end'))
->write("}\n\n")
;
}
protected function compileDisplay(Twig_Compiler $compiler)
{
$compiler
->write("protected function doDisplay(array \$context, array \$blocks = array())\n", "{\n")
->indent()
->subcompile($this->getNode('display_start'))
->subcompile($this->getNode('body'))
;
if ($this->hasNode('parent')) {
$parent = $this->getNode('parent');
$compiler->addDebugInfo($parent);
if ($parent instanceof Twig_Node_Expression_Constant) {
$compiler->write('$this->parent');
} else {
$compiler->write('$this->getParent($context)');
}
$compiler->raw("->display(\$context, array_merge(\$this->blocks, \$blocks));\n");
}
$compiler
->subcompile($this->getNode('display_end'))
->outdent()
->write("}\n\n")
;
}
protected function compileClassFooter(Twig_Compiler $compiler)
{
$compiler
->subcompile($this->getNode('class_end'))
->outdent()
->write("}\n")
;
}
protected function compileMacros(Twig_Compiler $compiler)
{
$compiler->subcompile($this->getNode('macros'));
}
protected function compileGetTemplateName(Twig_Compiler $compiler)
{
$compiler
->write("public function getTemplateName()\n", "{\n")
->indent()
->write('return ')
->repr($this->source->getName())
->raw(";\n")
->outdent()
->write("}\n\n")
;
}
protected function compileIsTraitable(Twig_Compiler $compiler)
{
// A template can be used as a trait if:
// * it has no parent
// * it has no macros
// * it has no body
//
// Put another way, a template can be used as a trait if it
// only contains blocks and use statements.
$traitable = !$this->hasNode('parent') && 0 === count($this->getNode('macros'));
if ($traitable) {
if ($this->getNode('body') instanceof Twig_Node_Body) {
$nodes = $this->getNode('body')->getNode(0);
} else {
$nodes = $this->getNode('body');
}
if (!count($nodes)) {
$nodes = new Twig_Node(array($nodes));
}
foreach ($nodes as $node) {
if (!count($node)) {
continue;
}
if ($node instanceof Twig_Node_Text && ctype_space($node->getAttribute('data'))) {
continue;
}
if ($node instanceof Twig_Node_BlockReference) {
continue;
}
$traitable = false;
break;
}
}
if ($traitable) {
return;
}
$compiler
->write("public function isTraitable()\n", "{\n")
->indent()
->write(sprintf("return %s;\n", $traitable ? 'true' : 'false'))
->outdent()
->write("}\n\n")
;
}
protected function compileDebugInfo(Twig_Compiler $compiler)
{
$compiler
->write("public function getDebugInfo()\n", "{\n")
->indent()
->write(sprintf("return %s;\n", str_replace("\n", '', var_export(array_reverse($compiler->getDebugInfo(), true), true))))
->outdent()
->write("}\n\n")
;
}
protected function compileGetSource(Twig_Compiler $compiler)
{
$compiler
->write("/** @deprecated since 1.27 (to be removed in 2.0). Use getSourceContext() instead */\n")
->write("public function getSource()\n", "{\n")
->indent()
->write("@trigger_error('The '.__METHOD__.' method is deprecated since version 1.27 and will be removed in 2.0. Use getSourceContext() instead.', E_USER_DEPRECATED);\n\n")
->write('return $this->getSourceContext()->getCode();')
->raw("\n")
->outdent()
->write("}\n\n")
;
}
protected function compileGetSourceContext(Twig_Compiler $compiler)
{
$compiler
->write("public function getSourceContext()\n", "{\n")
->indent()
->write('return new Twig_Source(')
->string($compiler->getEnvironment()->isDebug() ? $this->source->getCode() : '')
->raw(', ')
->string($this->source->getName())
->raw(', ')
->string($this->source->getPath())
->raw(");\n")
->outdent()
->write("}\n")
;
}
protected function compileLoadTemplate(Twig_Compiler $compiler, $node, $var)
{
if ($node instanceof Twig_Node_Expression_Constant) {
$compiler
->write(sprintf('%s = $this->loadTemplate(', $var))
->subcompile($node)
->raw(', ')
->repr($node->getTemplateName())
->raw(', ')
->repr($node->getTemplateLine())
->raw(");\n")
;
} else {
throw new LogicException('Trait templates can only be constant nodes.');
}
}
}