Fix Polymer licensing issues

third_party/web-animations-js/sources/src/handler-utils.js

-// Copyright 2014 Google Inc. All rights reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-//   You may obtain a copy of the License at
-//
-// http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-//   See the License for the specific language governing permissions and
-// limitations under the License.
-
-(function(scope) {
-
-  // consume* functions return a 2 value array of [parsed-data, '' or not-yet consumed input]
-
-  // Regex should be anchored with /^
-  function consumeToken(regex, string) {
-    var result = regex.exec(string);
-    if (result) {
-      result = regex.ignoreCase ? result[0].toLowerCase() : result[0];
-      return [result, string.substr(result.length)];
-    }
-  }
-
-  function consumeTrimmed(consumer, string) {
-    string = string.replace(/^\s*/, '');
-    var result = consumer(string);
-    if (result) {
-      return [result[0], result[1].replace(/^\s*/, '')];
-    }
-  }
-
-  function consumeRepeated(consumer, separator, string) {
-    consumer = consumeTrimmed.bind(null, consumer);
-    var list = [];
-    while (true) {
-      var result = consumer(string);
-      if (!result) {
-        return [list, string];
-      }
-      list.push(result[0]);
-      string = result[1];
-      result = consumeToken(separator, string);
-      if (!result || result[1] == '') {
-        return [list, string];
-      }
-      string = result[1];
-    }
-  }
-
-  // Consumes a token or expression with balanced parentheses
-  function consumeParenthesised(parser, string) {
-    var nesting = 0;
-    for (var n = 0; n < string.length; n++) {
-      if (/\s|,/.test(string[n]) && nesting == 0) {
-        break;
-      } else if (string[n] == '(') {
-        nesting++;
-      } else if (string[n] == ')') {
-        nesting--;
-        if (nesting == 0)
-          n++;
-        if (nesting <= 0)
-          break;
-      }
-    }
-    var parsed = parser(string.substr(0, n));
-    return parsed == undefined ? undefined : [parsed, string.substr(n)];
-  }
-
-  function lcm(a, b) {
-    var c = a;
-    var d = b;
-    while (c && d)
-      c > d ? c %= d : d %= c;
-    c = (a * b) / (c + d);
-    return c;
-  }
-
-  function ignore(value) {
-    return function(input) {
-      var result = value(input);
-      if (result)
-        result[0] = undefined;
-      return result;
-    }
-  }
-
-  function optional(value, defaultValue) {
-    return function(input) {
-      var result = value(input);
-      if (result)
-        return result;
-      return [defaultValue, input];
-    }
-  }
-
-  function consumeList(list, input) {
-    var output = [];
-    for (var i = 0; i < list.length; i++) {
-      var result = scope.consumeTrimmed(list[i], input);
-      if (!result || result[0] == '')
-        return;
-      if (result[0] !== undefined)
-        output.push(result[0]);
-      input = result[1];
-    }
-    if (input == '') {
-      return output;
-    }
-  }
-
-  function mergeWrappedNestedRepeated(wrap, nestedMerge, separator, left, right) {
-    var matchingLeft = [];
-    var matchingRight = [];
-    var reconsititution = [];
-    var length = lcm(left.length, right.length);
-    for (var i = 0; i < length; i++) {
-      var thing = nestedMerge(left[i % left.length], right[i % right.length]);
-      if (!thing) {
-        return;
-      }
-      matchingLeft.push(thing[0]);
-      matchingRight.push(thing[1]);
-      reconsititution.push(thing[2]);
-    }
-    return [matchingLeft, matchingRight, function(positions) {
-      var result = positions.map(function(position, i) {
-        return reconsititution[i](position);
-      }).join(separator);
-      return wrap ? wrap(result) : result;
-    }];
-  }
-
-  function mergeList(left, right, list) {
-    var lefts = [];
-    var rights = [];
-    var functions = [];
-    var j = 0;
-    for (var i = 0; i < list.length; i++) {
-      if (typeof list[i] == 'function') {
-        var result = list[i](left[j], right[j++]);
-        lefts.push(result[0]);
-        rights.push(result[1]);
-        functions.push(result[2]);
-      } else {
-        (function(pos) {
-          lefts.push(false);
-          rights.push(false);
-          functions.push(function() { return list[pos]; });
-        })(i);
-      }
-    }
-    return [lefts, rights, function(results) {
-      var result = '';
-      for (var i = 0; i < results.length; i++) {
-        result += functions[i](results[i]);
-      }
-      return result;
-    }];
-  }
-
-  scope.consumeToken = consumeToken;
-  scope.consumeTrimmed = consumeTrimmed;
-  scope.consumeRepeated = consumeRepeated;
-  scope.consumeParenthesised = consumeParenthesised;
-  scope.ignore = ignore;
-  scope.optional = optional;
-  scope.consumeList = consumeList;
-  scope.mergeNestedRepeated = mergeWrappedNestedRepeated.bind(null, null);
-  scope.mergeWrappedNestedRepeated = mergeWrappedNestedRepeated;
-  scope.mergeList = mergeList;
-
-})(webAnimations1);