compile.parse_is_expr.php
1.51 KB
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<?php
/**
* Template Lite compile IS exprenssion in IF tag - template internal module
*
* Type: template
* Name: compile_parse_is_expr
*/
function compile_parse_is_expr($is_arg, $_args, &$object)
{
$expr_end = 0;
$negate_expr = false;
if (($first_arg = array_shift($_args)) == 'not') {
$negate_expr = true;
$expr_type = array_shift($_args);
}
else
{
$expr_type = $first_arg;
}
switch ($expr_type) {
case 'even':
if (isset($_args[$expr_end]) && $_args[$expr_end] == 'by')
{
$expr_end++;
$expr_arg = $_args[$expr_end++];
$expr = "!(1 & ($is_arg / " . $object->_parse_variable($expr_arg) . "))";
}
else
{
$expr = "!(1 & $is_arg)";
}
break;
case 'odd':
if (isset($_args[$expr_end]) && $_args[$expr_end] == 'by')
{
$expr_end++;
$expr_arg = $_args[$expr_end++];
$expr = "(1 & ($is_arg / " . $object->_parse_variable($expr_arg) . "))";
}
else
{
$expr = "(1 & $is_arg)";
}
break;
case 'div':
if (@$_args[$expr_end] == 'by')
{
$expr_end++;
$expr_arg = $_args[$expr_end++];
$expr = "!($is_arg % " . $object->_parse_variable($expr_arg) . ")";
}
else
{
$object->trigger_error("expecting 'by' after 'div'", E_USER_ERROR, __FILE__, __LINE__);
}
break;
default:
$object->trigger_error("unknown 'is' expression - '$expr_type'", E_USER_ERROR, __FILE__, __LINE__);
break;
}
if ($negate_expr) {
$expr = "!($expr)";
}
array_splice($_args, 0, $expr_end, $expr);
return $_args;
}
?>