function Smarty_Compiler::_parse_is_expr in Quiz 6.5

Same name and namespace in other branches

1. 6.6 includes/moodle/lib/smarty/Smarty_Compiler.class.php \Smarty_Compiler::_parse_is_expr()

Parse is expression

Parameters

string $is_arg:

array $tokens:

Return value

array

1 call to Smarty_Compiler::_parse_is_expr()

Smarty_Compiler::_compile_if_tag in includes/moodle/lib/smarty/Smarty_Compiler.class.php

Compile {if ...} tag

File

includes/moodle/lib/smarty/Smarty_Compiler.class.php, line 1436

Class

Smarty_Compiler

Template compiling class @package Smarty

Code

function _parse_is_expr($is_arg, $tokens) {
  $expr_end = 0;
  $negate_expr = false;
  if (($first_token = array_shift($tokens)) == 'not') {
    $negate_expr = true;
    $expr_type = array_shift($tokens);
  }
  else {
    $expr_type = $first_token;
  }
  switch ($expr_type) {
    case 'even':
      if (isset($tokens[$expr_end]) && $tokens[$expr_end] == 'by') {
        $expr_end++;
        $expr_arg = $tokens[$expr_end++];
        $expr = "!(1 & ({$is_arg} / " . $this
          ->_parse_var_props($expr_arg) . "))";
      }
      else {
        $expr = "!(1 & {$is_arg})";
      }
      break;
    case 'odd':
      if (isset($tokens[$expr_end]) && $tokens[$expr_end] == 'by') {
        $expr_end++;
        $expr_arg = $tokens[$expr_end++];
        $expr = "(1 & ({$is_arg} / " . $this
          ->_parse_var_props($expr_arg) . "))";
      }
      else {
        $expr = "(1 & {$is_arg})";
      }
      break;
    case 'div':
      if (@$tokens[$expr_end] == 'by') {
        $expr_end++;
        $expr_arg = $tokens[$expr_end++];
        $expr = "!({$is_arg} % " . $this
          ->_parse_var_props($expr_arg) . ")";
      }
      else {
        $this
          ->_syntax_error("expecting 'by' after 'div'", E_USER_ERROR, __FILE__, __LINE__);
      }
      break;
    default:
      $this
        ->_syntax_error("unknown 'is' expression - '{$expr_type}'", E_USER_ERROR, __FILE__, __LINE__);
      break;
  }
  if ($negate_expr) {
    $expr = "!({$expr})";
  }
  array_splice($tokens, 0, $expr_end, $expr);
  return $tokens;
}