/**
* @param mixed $candidate
* @param RenderingContextInterface $renderingContext
* @return mixed
*/
public static function getTemplateVariableOrValueItself($candidate, RenderingContextInterface $renderingContext)
{
$suspect = parent::getTemplateVariableOrValueItself($candidate, $renderingContext);
if ($suspect === $candidate) {
return $renderingContext->getTemplateParser()->unquoteString($suspect);
}
return $suspect;
}
/**
* @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(array(__CLASS__, 'trimPart'), $parts);
list($check, $then, $else) = $parts;
$checkResult = Parser\SyntaxTree\BooleanNode::convertToBoolean(parent::getTemplateVariableOrValueItself($check, $renderingContext));
if ($checkResult) {
return parent::getTemplateVariableOrValueItself($then, $renderingContext);
} else {
return parent::getTemplateVariableOrValueItself($else, $renderingContext);
}
}
/**
* @param RenderingContextInterface $renderingContext
* @param string $expression
* @param array $matches
* @return integer|float
*/
public static function evaluateExpression(RenderingContextInterface $renderingContext, $expression, array $matches)
{
// Split the expression on all recognized operators
$matches = array();
preg_match_all('/([+\\-*\\^\\/\\%]|[a-z0-9\\.]+)/s', $expression, $matches);
$matches[0] = array_map('trim', $matches[0]);
// Like the BooleanNode, we dumb down the processing logic to not apply
// any special precedence on the priority of operators. We simply process
// them in order.
$variables = $renderingContext->getVariableProvider()->getAll();
$result = array_shift($matches[0]);
$result = parent::getTemplateVariableOrValueItself($result, $renderingContext);
$operator = NULL;
$operators = array('*', '^', '-', '+', '/', '%');
foreach ($matches[0] as $part) {
if (in_array($part, $operators)) {
$operator = $part;
} else {
$part = parent::getTemplateVariableOrValueItself($part, $renderingContext);
$result = self::evaluateOperation($result, $operator, $part);
}
}
return $result;
}
