Function deepCompare

code/songhop/www/lib/angular/angular.js:16683–16730

(actual, expected, comparator, matchAgainstAnyProp)

}

function deepCompare(actual, expected, comparator, matchAgainstAnyProp) {
  var actualType = typeof actual;
  var expectedType = typeof expected;

  if ((expectedType === 'string') && (expected.charAt(0) === '!')) {
    return !deepCompare(actual, expected.substring(1), comparator, matchAgainstAnyProp);
  } else if (actualType === 'array') {
    // In case `actual` is an array, consider it a match
    // if ANY of it's items matches `expected`
    return actual.some(function(item) {
      return deepCompare(item, expected, comparator, matchAgainstAnyProp);
    });
  }

  switch (actualType) {
    case 'object':
      var key;
      if (matchAgainstAnyProp) {
        for (key in actual) {
          if ((key.charAt(0) !== '$') && deepCompare(actual[key], expected, comparator)) {
            return true;
          }
        }
        return false;
      } else if (expectedType === 'object') {
        for (key in expected) {
          var expectedVal = expected[key];
          if (isFunction(expectedVal)) {
            continue;
          }

          var keyIsDollar = key === '$';
          var actualVal = keyIsDollar ? actual : actual[key];
          if (!deepCompare(actualVal, expectedVal, comparator, keyIsDollar)) {
            return false;
          }
        }
        return true;
      } else {
        return comparator(actual, expected);
      }
      break;
    case 'function':
      return false;
    default:
      return comparator(actual, expected);
  }
}

/**
 * @ngdoc filter