DomXmlParser.prototype.parse = function()

in lib/xml/browser_parser.js [6:74]
64 lines of code
21 McCabe index (conditional complexity)

DomXmlParser.prototype.parse = function(xml, shape) {
  if (xml.replace(/^\s+/, '') === '') return {};

  var result, error;
  try {
    if (window.DOMParser) {
      try {
        var parser = new DOMParser();
        result = parser.parseFromString(xml, 'text/xml');
      } catch (syntaxError) {
        throw util.error(new Error('Parse error in document'),
          {
            originalError: syntaxError,
            code: 'XMLParserError',
            retryable: true
          });
      }

      if (result.documentElement === null) {
        throw util.error(new Error('Cannot parse empty document.'),
          {
            code: 'XMLParserError',
            retryable: true
          });
      }

      var isError = result.getElementsByTagName('parsererror')[0];
      if (isError && (isError.parentNode === result ||
          isError.parentNode.nodeName === 'body' ||
          isError.parentNode.parentNode === result ||
          isError.parentNode.parentNode.nodeName === 'body')) {
        var errorElement = isError.getElementsByTagName('div')[0] || isError;
        throw util.error(new Error(errorElement.textContent || 'Parser error in document'),
          {
            code: 'XMLParserError',
            retryable: true
          });
      }
    } else if (window.ActiveXObject) {
      result = new window.ActiveXObject('Microsoft.XMLDOM');
      result.async = false;

      if (!result.loadXML(xml)) {
        throw util.error(new Error('Parse error in document'),
          {
            code: 'XMLParserError',
            retryable: true
          });
      }
    } else {
      throw new Error('Cannot load XML parser');
    }
  } catch (e) {
    error = e;
  }

  if (result && result.documentElement && !error) {
    var data = parseXml(result.documentElement, shape);
    var metadata = getElementByTagName(result.documentElement, 'ResponseMetadata');
    if (metadata) {
      data.ResponseMetadata = parseXml(metadata, {});
    }
    return data;
  } else if (error) {
    throw util.error(error || new Error(), {code: 'XMLParserError', retryable: true});
  } else { // empty xml document
    return {};
  }
};