while (count($op_stack) > 0) {
$num_stack[] = Evaluator::eval_op_stack($op_stack, $num_stack, $back_track_pos);
}
return array_pop($num_stack);
}
# Currently only support single expression with no preceddence ,no boolean expression
# [expression] = [optional binary] ? operant [ optional compare operant]
# [operant] = variable|string|numeric|boolean
# [compare] = > | < | == | >= | <=
# [binary] = not | !
static function exec($args, $context)
{
return Evaluator::eval_expression($args, $context);
}
}
Evaluator::$op_precedence = array('(' => -1, 'not' => 0, 'or_' => 0, 'and_' => 0, 'eq' => 1, 'gt' => 1, 'lt' => 1, 'ge' => 1, 'le' => 1, 'mod' => 2, 'plus' => 3, 'minus' => 3, 'mul' => 4, 'div' => 4);
/**
* $type of token, Block | Variable
*/
class H2o_Token
{
function __construct($type, $content, $position)
{
$this->type = $type;
$this->content = $content;
$this->result = '';
$this->position = $position;
}
function write($content)
{
$this->result = $content;
