/**
* Adds the escaping formula to the specified expression using the current escaping
* rules:
*
* 1. The $status variable.
* 2. The current template settings.
* 3. The OPT settings.
*
* @param char $modifier The modifier used to escape the expression.
* @param string $expression The PHP expression to be escaped.
* @param string $format The format of the expression.
* @param boolean $status The status of escaping for this expression or NULL, if not set.
* @return string The expression with the escaping formula added, if necessary.
*/
public function escape($modifier, $expression, $format, $status = null)
{
// OPT Configuration
$escape = $this->_tpl->escape;
// Template configuration
if ($this->get('escaping') !== null) {
$escape = $this->get('escaping') == true ? true : false;
}
// Expression settings
if ($status !== null) {
$escape = $status == true ? true : false;
}
// Apply the escaping subroutine defined by the modifier.
if (!array_key_exists($modifier, $this->_modifiers)) {
throw new Opt_InvalidExpressionModifier_Exception($modifier, $expression);
}
if ($escape && !empty($this->_modifiers[$modifier])) {
return $this->_modifiers[$modifier] . '(' . Opt_Compiler_Utils::cast($this->_cdfManager, $expression, $format, 'Scalar') . ')';
}
return $expression;
}
/**
* Processes an unary operator for a single expression.
*
* @param string $operator The PHP operator
* @param SplFixedArray $expr The expression
* @param int $weight The operator weight
* @return SplFixedArray
*/
public function _unaryOperator($operator, SplFixedArray $expr, $weight)
{
$expr[0] = $operator . Opt_Compiler_Utils::cast($this->_manager, $expr[0], $expr[2], 'Scalar');
$expr[1] += $weight;
$expr[3] = 0;
return $expr;
}
