Blockly.PHP[''] = function()

in generators/php/lists.js [347:438]

• 89 lines of code
• 19 McCabe index (conditional complexity)

Blockly.PHP['lists_getSublist'] = function(block) {
  // Get sublist.
  var list = Blockly.PHP.valueToCode(block, 'LIST',
      Blockly.PHP.ORDER_NONE) || 'array()';
  var where1 = block.getFieldValue('WHERE1');
  var where2 = block.getFieldValue('WHERE2');
  if (where1 == 'FIRST' && where2 == 'LAST') {
    var code = list;
  } else if (list.match(/^\$\w+$/) ||
      (where1 != 'FROM_END' && where2 == 'FROM_START')) {
    // If the list is a simple value or doesn't require a call for length, don't
    // generate a helper function.
    switch (where1) {
      case 'FROM_START':
        var at1 = Blockly.PHP.getAdjusted(block, 'AT1');
        break;
      case 'FROM_END':
        var at1 = Blockly.PHP.getAdjusted(block, 'AT1', 1, false,
            Blockly.PHP.ORDER_SUBTRACTION);
        at1 = 'count(' + list + ') - ' + at1;
        break;
      case 'FIRST':
        var at1 = '0';
        break;
      default:
        throw Error('Unhandled option (lists_getSublist).');
    }
    switch (where2) {
      case 'FROM_START':
        var at2 = Blockly.PHP.getAdjusted(block, 'AT2', 0, false,
            Blockly.PHP.ORDER_SUBTRACTION);
        var length = at2 + ' - ';
        if (Blockly.isNumber(String(at1)) || String(at1).match(/^\(.+\)$/)) {
          length += at1;
        } else {
          length += '(' + at1 + ')';
        }
        length += ' + 1';
        break;
      case 'FROM_END':
        var at2 = Blockly.PHP.getAdjusted(block, 'AT2', 0, false,
            Blockly.PHP.ORDER_SUBTRACTION);
        var length = 'count(' + list + ') - ' + at2 + ' - ';
        if (Blockly.isNumber(String(at1)) || String(at1).match(/^\(.+\)$/)) {
          length += at1;
        } else {
          length += '(' + at1 + ')';
        }
        break;
      case 'LAST':
        var length = 'count(' + list + ') - ';
        if (Blockly.isNumber(String(at1)) || String(at1).match(/^\(.+\)$/)) {
          length += at1;
        } else {
          length += '(' + at1 + ')';
        }
        break;
      default:
        throw Error('Unhandled option (lists_getSublist).');
    }
    code = 'array_slice(' + list + ', ' + at1 + ', ' + length + ')';
  } else {
    var at1 = Blockly.PHP.getAdjusted(block, 'AT1');
    var at2 = Blockly.PHP.getAdjusted(block, 'AT2');
    var functionName = Blockly.PHP.provideFunction_(
        'lists_get_sublist',
        ['function ' + Blockly.PHP.FUNCTION_NAME_PLACEHOLDER_ +
            '($list, $where1, $at1, $where2, $at2) {',
         '  if ($where1 == \'FROM_END\') {',
         '    $at1 = count($list) - 1 - $at1;',
         '  } else if ($where1 == \'FIRST\') {',
         '    $at1 = 0;',
         '  } else if ($where1 != \'FROM_START\') {',
         '    throw new Exception(\'Unhandled option (lists_get_sublist).\');',
         '  }',
         '  $length = 0;',
         '  if ($where2 == \'FROM_START\') {',
         '    $length = $at2 - $at1 + 1;',
         '  } else if ($where2 == \'FROM_END\') {',
         '    $length = count($list) - $at1 - $at2;',
         '  } else if ($where2 == \'LAST\') {',
         '    $length = count($list) - $at1;',
         '  } else {',
         '    throw new Exception(\'Unhandled option (lists_get_sublist).\');',
         '  }',
         '  return array_slice($list, $at1, $length);',
         '}']);
    var code = functionName + '(' + list + ', \'' +
        where1 + '\', ' + at1 + ', \'' + where2 + '\', ' + at2 + ')';
  }
  return [code, Blockly.PHP.ORDER_FUNCTION_CALL];
};