/**
* @test
* @dataProvider getSomeEvaluationTestValues
* @param string $comparison
* @param boolean $expected
*/
public function testSomeEvaluations($comparison, $expected, $variables = array())
{
$parser = new BooleanParser();
$this->assertEquals($expected, BooleanNode::convertToBoolean($parser->evaluate($comparison, $variables), $this->renderingContext), 'Expression: ' . $comparison);
$compiledEvaluation = $parser->compile($comparison);
$functionName = 'expression_' . md5($comparison . rand(0, 100000));
eval('function ' . $functionName . '($context) {return ' . $compiledEvaluation . ';}');
$this->assertEquals($expected, BooleanNode::convertToBoolean($functionName($variables), $this->renderingContext), 'compiled Expression: ' . $compiledEvaluation);
}
/**
* @param RenderingContextInterface $renderingContext
* @param string $expression
* @param array $matches
* @return mixed
*/
public static function evaluateExpression(RenderingContextInterface $renderingContext, $expression, array $matches)
{
$parts = preg_split('/([\\?:])/s', $expression);
$parts = array_map([__CLASS__, 'trimPart'], $parts);
list($check, $then, $else) = $parts;
$context = static::gatherContext($renderingContext, $expression);
$parser = new BooleanParser();
$checkResult = $parser->evaluate($check, $context);
if ($checkResult) {
return static::getTemplateVariableOrValueItself($renderingContext->getTemplateParser()->unquoteString($then), $renderingContext);
} else {
return static::getTemplateVariableOrValueItself($renderingContext->getTemplateParser()->unquoteString($else), $renderingContext);
}
}
/**
* Takes a stack of nodes evaluates it with the end result
* being a single boolean value. Creates new BooleanNodes
* recursively to process braced expressions as single units.
*
* @param RenderingContextInterface $renderingContext
* @param array $expressionParts
* @return boolean the boolean value
*/
public static function evaluateStack(RenderingContextInterface $renderingContext, array $expressionParts)
{
$expression = static::reconcatenateExpression($expressionParts);
$context = static::gatherContext($renderingContext, $expressionParts);
$parser = new BooleanParser();
return static::convertToBoolean($parser->evaluate($expression, $context), $renderingContext);
}
