/**
* Compiles the ExpressionNode, returning an array with
* exactly two keys which contain strings:
*
* - "initialization" which contains variable initializations
* - "execution" which contains the execution (that uses the variables)
*
* The expression and matches can be read from the local
* instance - and the RenderingContext and other APIs
* can be accessed via the TemplateCompiler.
*
* @param TemplateCompiler $templateCompiler
* @return array
*/
public function compile(TemplateCompiler $templateCompiler)
{
$handlerClass = get_class($this);
$expressionVariable = $templateCompiler->variableName('string');
$matchesVariable = $templateCompiler->variableName('array');
$initializationPhpCode = sprintf('// Rendering %s node' . chr(10), $handlerClass);
$initializationPhpCode .= sprintf('%s = \'%s\';', $expressionVariable, $this->getExpression()) . chr(10);
$initializationPhpCode .= sprintf('%s = %s;', $matchesVariable, var_export($this->getMatches(), true)) . chr(10);
return ['initialization' => $initializationPhpCode, 'execution' => sprintf('\\%s::evaluateExpression($renderingContext, %s, %s)', $handlerClass, $expressionVariable, $matchesVariable)];
}
/**
* This ViewHelper is used a *lot* because it is used by the escape interceptor.
* Therefore we render it to raw PHP code during compilation
*
* @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)
{
$valueVariableName = $compiler->variableName('value');
$initializationPhpCode .= sprintf('%1$s = (%2$s[\'value\'] !== NULL ? %2$s[\'value\'] : %3$s());', $valueVariableName, $argumentsName, $closureName) . chr(10);
return sprintf('!is_string(%1$s) && !(is_object(%1$s) && method_exists(%1$s, \'__toString\')) ? %1$s : htmlspecialchars(%1$s, (%2$s[\'keepQuotes\'] ? ENT_NOQUOTES : ENT_QUOTES), %2$s[\'encoding\'], %2$s[\'doubleEncode\'])', $valueVariableName, $argumentsName);
}
/**
* Compiles the ExpressionNode, returning an array with
* exactly two keys which contain strings:
*
* - "initialization" which contains variable initializations
* - "execution" which contains the execution (that uses the variables)
*
* The expression and matches can be read from the local
* instance - and the RenderingContext and other APIs
* can be accessed via the TemplateCompiler.
*
* @param TemplateCompiler $templateCompiler
* @return string
*/
public function compile(TemplateCompiler $templateCompiler)
{
$parts = preg_split('/([\\?:])/s', $this->getExpression());
$parts = array_map([__CLASS__, 'trimPart'], $parts);
list($check, $then, $else) = $parts;
$matchesVariable = $templateCompiler->variableName('array');
$initializationPhpCode = '// Rendering TernaryExpression node' . chr(10);
$initializationPhpCode .= sprintf('%s = %s;', $matchesVariable, var_export($this->getMatches(), true)) . chr(10);
$parser = new BooleanParser();
$compiledExpression = $parser->compile($check);
$functionName = $templateCompiler->variableName('ternaryExpression');
$initializationPhpCode .= sprintf('%s = function($context, $renderingContext) {
if (%s::convertToBoolean(' . $compiledExpression . ', $renderingContext) === TRUE) {
return %s::getTemplateVariableOrValueItself(%s, $renderingContext);
} else {
return %s::getTemplateVariableOrValueItself(%s, $renderingContext);
}
};' . chr(10), $functionName, BooleanNode::class, static::class, var_export($then, true), static::class, var_export($else, true));
return ['initialization' => $initializationPhpCode, 'execution' => sprintf('%s(%s::gatherContext($renderingContext, %s[1]), $renderingContext)', $functionName, static::class, $matchesVariable)];
}
/**
* @test
*/
public function testVariableNameDelegatesToNodeConverter()
{
$instance = new TemplateCompiler();
$nodeConverter = $this->getMock(NodeConverter::class, array('variableName'), array($instance));
$nodeConverter->expects($this->once())->method('variableName')->willReturnArgument(0);
$instance->setNodeConverter($nodeConverter);
$this->assertEquals('foobar', $instance->variableName('foobar'));
}
/**
* 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;
$expressionEvaluationClosureName = $compiler->variableName('switchExpressionClosure');
foreach ($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)) {
$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;
}
