text: // 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.
  
  'use strict';
  (function(scope, testing) {
  
    function numberToString(x) {
      return x.toFixed(3).replace(/0+$/, '').replace(/\.$/, '');
    }
  
    function clamp(min, max, x) {
      return Math.min(max, Math.max(min, x));
    }
  
    function parseNumber(string) {
      if (/^\s*[-+]?(\d*\.)?\d+\s*$/.test(string))
        return Number(string);
    }
  
    function mergeNumbers(left, right) {
      return [left, right, numberToString];
    }
  
    // FIXME: This should probably go in it's own handler.
    function mergeFlex(left, right) {
      if (left == 0)
        return;
      return clampedMergeNumbers(0, Infinity)(left, right);
    }
  
    function mergePositiveIntegers(left, right) {
      return [left, right, function(x) {
        return Math.round(clamp(1, Infinity, x));
      }];
    }
  
    function clampedMergeNumbers(min, max) {
      return function(left, right) {
        return [left, right, function(x) {
          return numberToString(clamp(min, max, x));
        }];
      };
    }
  
    function parseNumberList(string) {
      var items = string.trim().split(/\s*[\s,]\s*/);
      if (items.length === 0) {
        return;
      }
      var result = [];
      for (var i = 0; i < items.length; i++) {
        var number = parseNumber(items[i]);
        if (number === undefined) {
          return;
        }
        result.push(number);
      }
      return result;
    }
  
    function mergeNumberLists(left, right) {
      if (left.length != right.length) {
        return;
      }
      return [left, right, function(numberList) {
        return numberList.map(numberToString).join(' ');
      }];
    }
  
    function round(left, right) {
      return [left, right, Math.round];
    }
  
    scope.clamp = clamp;
    scope.addPropertiesHandler(parseNumberList, mergeNumberLists, ['stroke-dasharray']);
    scope.addPropertiesHandler(parseNumber, clampedMergeNumbers(0, Infinity), ['border-image-width', 'line-height']);
    scope.addPropertiesHandler(parseNumber, clampedMergeNumbers(0, 1), ['opacity', 'shape-image-threshold']);
    scope.addPropertiesHandler(parseNumber, mergeFlex, ['flex-grow', 'flex-shrink']);
    scope.addPropertiesHandler(parseNumber, mergePositiveIntegers, ['orphans', 'widows']);
    scope.addPropertiesHandler(parseNumber, round, ['z-index']);
  
    scope.parseNumber = parseNumber;
    scope.parseNumberList = parseNumberList;
    scope.mergeNumbers = mergeNumbers;
    scope.numberToString = numberToString;
  
  })(webAnimations1, webAnimationsTesting);
  