/**
* @test
*/
public function testWrapViewHelperNodeArgumentEvaluationInClosure()
{
$instance = new TemplateCompiler();
$arguments = array('value' => new TextNode('sometext'));
$renderingContext = new RenderingContextFixture();
$viewHelperNode = new ViewHelperNode($renderingContext, 'f', 'format.raw', $arguments, new ParsingState());
$result = $instance->wrapViewHelperNodeArgumentEvaluationInClosure($viewHelperNode, 'value');
$serialized = serialize($arguments['value']);
$expected = 'function() use ($renderingContext, $self) {' . chr(10);
$expected .= sprintf('$argument = unserialize(\'%s\'); return $argument->evaluate($renderingContext);', $serialized);
$expected .= chr(10) . '}';
$this->assertEquals($expected, $result);
}
/**
* The compiled ViewHelper adds two new ViewHelper arguments: __thenClosure and __elseClosure.
* These contain closures which are be executed to render the then(), respectively else() case.
*
* @param string $argumentsName
* @param string $closureName
* @param string $initializationPhpCode
* @param ViewHelperNode $node
* @param TemplateCompiler $compiler
* @return string
*/
public function compile($argumentsName, $closureName, &$initializationPhpCode, ViewHelperNode $node, TemplateCompiler $compiler)
{
$thenViewHelperEncountered = $elseViewHelperEncountered = false;
foreach ($node->getChildNodes() as $childNode) {
if ($childNode instanceof ViewHelperNode) {
$viewHelperClassName = $childNode->getViewHelperClassName();
if (substr($viewHelperClassName, -14) === 'ThenViewHelper') {
$thenViewHelperEncountered = true;
$childNodesAsClosure = $compiler->wrapChildNodesInClosure($childNode);
$initializationPhpCode .= sprintf('%s[\'__thenClosure\'] = %s;', $argumentsName, $childNodesAsClosure) . chr(10);
} elseif (substr($viewHelperClassName, -14) === 'ElseViewHelper') {
$elseViewHelperEncountered = true;
$childNodesAsClosure = $compiler->wrapChildNodesInClosure($childNode);
$initializationPhpCode .= sprintf('%s[\'__elseClosures\'][] = %s;', $argumentsName, $childNodesAsClosure) . chr(10);
$arguments = $childNode->getArguments();
if (isset($arguments['if'])) {
// The "else" has an argument, indicating it has a secondary (elseif) condition.
// Compile a closure which will evaluate the condition.
$elseIfConditionAsClosure = $compiler->wrapViewHelperNodeArgumentEvaluationInClosure($childNode, 'if');
$initializationPhpCode .= sprintf('%s[\'__elseifClosures\'][] = %s;', $argumentsName, $elseIfConditionAsClosure) . chr(10);
}
}
}
}
if (!$thenViewHelperEncountered && !$elseViewHelperEncountered && !isset($node->getArguments()['then'])) {
$initializationPhpCode .= sprintf('%s[\'__thenClosure\'] = %s;', $argumentsName, $closureName) . chr(10);
}
return parent::compile($argumentsName, $closureName, $initializationPhpCode, $node, $compiler);
}
/**
* Compiles the node structure to a native switch
* statement which evaluates closures for each
* case comparison and renders child node closures
* only when value matches.
*
* @param string $argumentsName
* @param string $closureName
* @param string $initializationPhpCode
* @param ViewHelperNode $node
* @param TemplateCompiler $compiler
* @return string
*/
public function compile($argumentsName, $closureName, &$initializationPhpCode, ViewHelperNode $node, TemplateCompiler $compiler)
{
$phpCode = 'call_user_func_array(function($arguments) use ($renderingContext, $self) {' . PHP_EOL . 'switch ($arguments[\'expression\']) {' . PHP_EOL;
foreach ($node->getChildNodes() as $childNode) {
if ($this->isDefaultCaseNode($childNode)) {
$childrenClosure = $compiler->wrapChildNodesInClosure($childNode);
$phpCode .= sprintf('default: return call_user_func(%s);', $childrenClosure) . PHP_EOL;
} elseif ($this->isCaseNode($childNode)) {
/** @var ViewHelperNode $childNode */
$valueClosure = $compiler->wrapViewHelperNodeArgumentEvaluationInClosure($childNode, 'value');
$childrenClosure = $compiler->wrapChildNodesInClosure($childNode);
$phpCode .= sprintf('case call_user_func(%s): return call_user_func(%s);', $valueClosure, $childrenClosure, $compiler->getNodeConverter()->convert($childNode)) . PHP_EOL;
}
}
$phpCode .= '}' . PHP_EOL;
$phpCode .= sprintf('}, array(%s))', $argumentsName);
return $phpCode;
}
