text: 
  
  var $$UMFP; // reference to $UrlMatcherFactoryProvider
  
  /**
   * @ngdoc object
   * @name ui.router.util.type:UrlMatcher
   *
   * @description
   * Matches URLs against patterns and extracts named parameters from the path or the search
   * part of the URL. A URL pattern consists of a path pattern, optionally followed by '?' and a list
   * of search parameters. Multiple search parameter names are separated by '&'. Search parameters
   * do not influence whether or not a URL is matched, but their values are passed through into
   * the matched parameters returned by {@link ui.router.util.type:UrlMatcher#methods_exec exec}.
   * 
   * Path parameter placeholders can be specified using simple colon/catch-all syntax or curly brace
   * syntax, which optionally allows a regular expression for the parameter to be specified:
   *
   * * `':'` name - colon placeholder
   * * `'*'` name - catch-all placeholder
   * * `'{' name '}'` - curly placeholder
   * * `'{' name ':' regexp|type '}'` - curly placeholder with regexp or type name. Should the
   *   regexp itself contain curly braces, they must be in matched pairs or escaped with a backslash.
   *
   * Parameter names may contain only word characters (latin letters, digits, and underscore) and
   * must be unique within the pattern (across both path and search parameters). For colon 
   * placeholders or curly placeholders without an explicit regexp, a path parameter matches any
   * number of characters other than '/'. For catch-all placeholders the path parameter matches
   * any number of characters.
   * 
   * Examples:
   * 
   * * `'/hello/'` - Matches only if the path is exactly '/hello/'. There is no special treatment for
   *   trailing slashes, and patterns have to match the entire path, not just a prefix.
   * * `'/user/:id'` - Matches '/user/bob' or '/user/1234!!!' or even '/user/' but not '/user' or
   *   '/user/bob/details'. The second path segment will be captured as the parameter 'id'.
   * * `'/user/{id}'` - Same as the previous example, but using curly brace syntax.
   * * `'/user/{id:[^/]*}'` - Same as the previous example.
   * * `'/user/{id:[0-9a-fA-F]{1,8}}'` - Similar to the previous example, but only matches if the id
   *   parameter consists of 1 to 8 hex digits.
   * * `'/files/{path:.*}'` - Matches any URL starting with '/files/' and captures the rest of the
   *   path into the parameter 'path'.
   * * `'/files/*path'` - ditto.
   * * `'/calendar/{start:date}'` - Matches "/calendar/2014-11-12" (because the pattern defined
   *   in the built-in  `date` Type matches `2014-11-12`) and provides a Date object in $stateParams.start
   *
   * @param {string} pattern  The pattern to compile into a matcher.
   * @param {Object} config  A configuration object hash:
   * @param {Object=} parentMatcher Used to concatenate the pattern/config onto
   *   an existing UrlMatcher
   *
   * * `caseInsensitive` - `true` if URL matching should be case insensitive, otherwise `false`, the default value (for backward compatibility) is `false`.
   * * `strict` - `false` if matching against a URL with a trailing slash should be treated as equivalent to a URL without a trailing slash, the default value is `true`.
   *
   * @property {string} prefix  A static prefix of this pattern. The matcher guarantees that any
   *   URL matching this matcher (i.e. any string for which {@link ui.router.util.type:UrlMatcher#methods_exec exec()} returns
   *   non-null) will start with this prefix.
   *
   * @property {string} source  The pattern that was passed into the constructor
   *
   * @property {string} sourcePath  The path portion of the source property
   *
   * @property {string} sourceSearch  The search portion of the source property
   *
   * @property {string} regex  The constructed regex that will be used to match against the url when 
   *   it is time to determine which url will match.
   *
   * @returns {Object}  New `UrlMatcher` object
   */
  function UrlMatcher(pattern, config, parentMatcher) {
    config = extend({ params: {} }, isObject(config) ? config : {});
  
    // Find all placeholders and create a compiled pattern, using either classic or curly syntax:
    //   '*' name
    //   ':' name
    //   '{' name '}'
    //   '{' name ':' regexp '}'
    // The regular expression is somewhat complicated due to the need to allow curly braces
    // inside the regular expression. The placeholder regexp breaks down as follows:
    //    ([:*])([\w\[\]]+)              - classic placeholder ($1 / $2) (search version has - for snake-case)
    //    \{([\w\[\]]+)(?:\:( ... ))?\}  - curly brace placeholder ($3) with optional regexp/type ... ($4) (search version has - for snake-case
    //    (?: ... | ... | ... )+         - the regexp consists of any number of atoms, an atom being either
    //    [^{}\\]+                       - anything other than curly braces or backslash
    //    \\.                            - a backslash escape
    //    \{(?:[^{}\\]+|\\.)*\}          - a matched set of curly braces containing other atoms
    var placeholder       = /([:*])([\w\[\]]+)|\{([\w\[\]]+)(?:\:((?:[^{}\\]+|\\.|\{(?:[^{}\\]+|\\.)*\})+))?\}/g,
        searchPlaceholder = /([:]?)([\w\[\]-]+)|\{([\w\[\]-]+)(?:\:((?:[^{}\\]+|\\.|\{(?:[^{}\\]+|\\.)*\})+))?\}/g,
        compiled = '^', last = 0, m,
        segments = this.segments = [],
        parentParams = parentMatcher ? parentMatcher.params : {},
        params = this.params = parentMatcher ? parentMatcher.params.$$new() : new $$UMFP.ParamSet(),
        paramNames = [];
  
    function addParameter(id, type, config, location) {
      paramNames.push(id);
      if (parentParams[id]) return parentParams[id];
      if (!/^\w+(-+\w+)*(?:\[\])?$/.test(id)) throw new Error("Invalid parameter name '" + id + "' in pattern '" + pattern + "'");
      if (params[id]) throw new Error("Duplicate parameter name '" + id + "' in pattern '" + pattern + "'");
      params[id] = new $$UMFP.Param(id, type, config, location);
      return params[id];
    }
  
    function quoteRegExp(string, pattern, squash) {
      var surroundPattern = ['',''], result = string.replace(/[\\\[\]\^$*+?.()|{}]/g, "\\$&");
      if (!pattern) return result;
      switch(squash) {
        case false: surroundPattern = ['(', ')'];   break;
        case true:  surroundPattern = ['?(', ')?']; break;
        default:    surroundPattern = ['(' + squash + "|", ')?'];  break;
      }
      return result + surroundPattern[0] + pattern + surroundPattern[1];
    }
  
    this.source = pattern;
  
    // Split into static segments separated by path parameter placeholders.
    // The number of segments is always 1 more than the number of parameters.
    function matchDetails(m, isSearch) {
      var id, regexp, segment, type, cfg, arrayMode;
      id          = m[2] || m[3]; // IE[78] returns '' for unmatched groups instead of null
      cfg         = config.params[id];
      segment     = pattern.substring(last, m.index);
      regexp      = isSearch ? m[4] : m[4] || (m[1] == '*' ? '.*' : null);
      type        = $$UMFP.type(regexp || "string") || inherit($$UMFP.type("string"), { pattern: new RegExp(regexp) });
      return {
        id: id, regexp: regexp, segment: segment, type: type, cfg: cfg
      };
    }
  
    var p, param, segment;
    while ((m = placeholder.exec(pattern))) {
      p = matchDetails(m, false);
      if (p.segment.indexOf('?') >= 0) break; // we're into the search part
  
      param = addParameter(p.id, p.type, p.cfg, "path");
      compiled += quoteRegExp(p.segment, param.type.pattern.source, param.squash);
      segments.push(p.segment);
      last = placeholder.lastIndex;
    }
    segment = pattern.substring(last);
  
    // Find any search parameter names and remove them from the last segment
    var i = segment.indexOf('?');
  
    if (i >= 0) {
      var search = this.sourceSearch = segment.substring(i);
      segment = segment.substring(0, i);
      this.sourcePath = pattern.substring(0, last + i);
  
      if (search.length > 0) {
        last = 0;
        while ((m = searchPlaceholder.exec(search))) {
          p = matchDetails(m, true);
          param = addParameter(p.id, p.type, p.cfg, "search");
          last = placeholder.lastIndex;
          // check if ?&
        }
      }
    } else {
      this.sourcePath = pattern;
      this.sourceSearch = '';
    }
  
    compiled += quoteRegExp(segment) + (config.strict === false ? '\/?' : '') + '$';
    segments.push(segment);
  
    this.regexp = new RegExp(compiled, config.caseInsensitive ? 'i' : undefined);
    this.prefix = segments[0];
    this.$$paramNames = paramNames;
  }
  
  /**
   * @ngdoc function
   * @name ui.router.util.type:UrlMatcher#concat
   * @methodOf ui.router.util.type:UrlMatcher
   *
   * @description
   * Returns a new matcher for a pattern constructed by appending the path part and adding the
   * search parameters of the specified pattern to this pattern. The current pattern is not
   * modified. This can be understood as creating a pattern for URLs that are relative to (or
   * suffixes of) the current pattern.
   *
   * @example
   * The following two matchers are equivalent:
   * <pre>
   * new UrlMatcher('/user/{id}?q').concat('/details?date');
   * new UrlMatcher('/user/{id}/details?q&date');
   * </pre>
   *
   * @param {string} pattern  The pattern to append.
   * @param {Object} config  An object hash of the configuration for the matcher.
   * @returns {UrlMatcher}  A matcher for the concatenated pattern.
   */
  UrlMatcher.prototype.concat = function (pattern, config) {
    // Because order of search parameters is irrelevant, we can add our own search
    // parameters to the end of the new pattern. Parse the new pattern by itself
    // and then join the bits together, but it's much easier to do this on a string level.
    var defaultConfig = {
      caseInsensitive: $$UMFP.caseInsensitive(),
      strict: $$UMFP.strictMode(),
      squash: $$UMFP.defaultSquashPolicy()
    };
    return new UrlMatcher(this.sourcePath + pattern + this.sourceSearch, extend(defaultConfig, config), this);
  };
  
  UrlMatcher.prototype.toString = function () {
    return this.source;
  };
  
  /**
   * @ngdoc function
   * @name ui.router.util.type:UrlMatcher#exec
   * @methodOf ui.router.util.type:UrlMatcher
   *
   * @description
   * Tests the specified path against this matcher, and returns an object containing the captured
   * parameter values, or null if the path does not match. The returned object contains the values
   * of any search parameters that are mentioned in the pattern, but their value may be null if
   * they are not present in `searchParams`. This means that search parameters are always treated
   * as optional.
   *
   * @example
   * <pre>
   * new UrlMatcher('/user/{id}?q&r').exec('/user/bob', {
   *   x: '1', q: 'hello'
   * });
   * // returns { id: 'bob', q: 'hello', r: null }
   * </pre>
   *
   * @param {string} path  The URL path to match, e.g. `$location.path()`.
   * @param {Object} searchParams  URL search parameters, e.g. `$location.search()`.
   * @returns {Object}  The captured parameter values.
   */
  UrlMatcher.prototype.exec = function (path, searchParams) {
    var m = this.regexp.exec(path);
    if (!m) return null;
    searchParams = searchParams || {};
  
    var paramNames = this.parameters(), nTotal = paramNames.length,
      nPath = this.segments.length - 1,
      values = {}, i, j, cfg, paramName;
  
    if (nPath !== m.length - 1) throw new Error("Unbalanced capture group in route '" + this.source + "'");
  
    function decodePathArray(string) {
      function reverseString(str) { return str.split("").reverse().join(""); }
      function unquoteDashes(str) { return str.replace(/\\-/, "-"); }
  
      var split = reverseString(string).split(/-(?!\\)/);
      var allReversed = map(split, reverseString);
      return map(allReversed, unquoteDashes).reverse();
    }
  
    for (i = 0; i < nPath; i++) {
      paramName = paramNames[i];
      var param = this.params[paramName];
      var paramVal = m[i+1];
      // if the param value matches a pre-replace pair, replace the value before decoding.
      for (j = 0; j < param.replace; j++) {
        if (param.replace[j].from === paramVal) paramVal = param.replace[j].to;
      }
      if (paramVal && param.array === true) paramVal = decodePathArray(paramVal);
      values[paramName] = param.value(paramVal);
    }
    for (/**/; i < nTotal; i++) {
      paramName = paramNames[i];
      values[paramName] = this.params[paramName].value(searchParams[paramName]);
    }
  
    return values;
  };
  
  /**
   * @ngdoc function
   * @name ui.router.util.type:UrlMatcher#parameters
   * @methodOf ui.router.util.type:UrlMatcher
   *
   * @description
   * Returns the names of all path and search parameters of this pattern in an unspecified order.
   * 
   * @returns {Array.<string>}  An array of parameter names. Must be treated as read-only. If the
   *    pattern has no parameters, an empty array is returned.
   */
  UrlMatcher.prototype.parameters = function (param) {
    if (!isDefined(param)) return this.$$paramNames;
    return this.params[param] || null;
  };
  
  /**
   * @ngdoc function
   * @name ui.router.util.type:UrlMatcher#validate
   * @methodOf ui.router.util.type:UrlMatcher
   *
   * @description
   * Checks an object hash of parameters to validate their correctness according to the parameter
   * types of this `UrlMatcher`.
   *
   * @param {Object} params The object hash of parameters to validate.
   * @returns {boolean} Returns `true` if `params` validates, otherwise `false`.
   */
  UrlMatcher.prototype.validates = function (params) {
    return this.params.$$validates(params);
  };
  
  /**
   * @ngdoc function
   * @name ui.router.util.type:UrlMatcher#format
   * @methodOf ui.router.util.type:UrlMatcher
   *
   * @description
   * Creates a URL that matches this pattern by substituting the specified values
   * for the path and search parameters. Null values for path parameters are
   * treated as empty strings.
   *
   * @example
   * <pre>
   * new UrlMatcher('/user/{id}?q').format({ id:'bob', q:'yes' });
   * // returns '/user/bob?q=yes'
   * </pre>
   *
   * @param {Object} values  the values to substitute for the parameters in this pattern.
   * @returns {string}  the formatted URL (path and optionally search part).
   */
  UrlMatcher.prototype.format = function (values) {
    values = values || {};
    var segments = this.segments, params = this.parameters(), paramset = this.params;
    if (!this.validates(values)) return null;
  
    var i, search = false, nPath = segments.length - 1, nTotal = params.length, result = segments[0];
  
    function encodeDashes(str) { // Replace dashes with encoded "\-"
      return encodeURIComponent(str).replace(/-/g, function(c) { return '%5C%' + c.charCodeAt(0).toString(16).toUpperCase(); });
    }
  
    for (i = 0; i < nTotal; i++) {
      var isPathParam = i < nPath;
      var name = params[i], param = paramset[name], value = param.value(values[name]);
      var isDefaultValue = param.isOptional && param.type.equals(param.value(), value);
      var squash = isDefaultValue ? param.squash : false;
      var encoded = param.type.encode(value);
  
      if (isPathParam) {
        var nextSegment = segments[i + 1];
        if (squash === false) {
          if (encoded != null) {
            if (isArray(encoded)) {
              result += map(encoded, encodeDashes).join("-");
            } else {
              result += encodeURIComponent(encoded);
            }
          }
          result += nextSegment;
        } else if (squash === true) {
          var capture = result.match(/\/$/) ? /\/?(.*)/ : /(.*)/;
          result += nextSegment.match(capture)[1];
        } else if (isString(squash)) {
          result += squash + nextSegment;
        }
      } else {
        if (encoded == null || (isDefaultValue && squash !== false)) continue;
        if (!isArray(encoded)) encoded = [ encoded ];
        encoded = map(encoded, encodeURIComponent).join('&' + name + '=');
        result += (search ? '&' : '?') + (name + '=' + encoded);
        search = true;
      }
    }
  
    return result;
  };
  
  /**
   * @ngdoc object
   * @name ui.router.util.type:Type
   *
   * @description
   * Implements an interface to define custom parameter types that can be decoded from and encoded to
   * string parameters matched in a URL. Used by {@link ui.router.util.type:UrlMatcher `UrlMatcher`}
   * objects when matching or formatting URLs, or comparing or validating parameter values.
   *
   * See {@link ui.router.util.$urlMatcherFactory#methods_type `$urlMatcherFactory#type()`} for more
   * information on registering custom types.
   *
   * @param {Object} config  A configuration object which contains the custom type definition.  The object's
   *        properties will override the default methods and/or pattern in `Type`'s public interface.
   * @example
   * <pre>
   * {
   *   decode: function(val) { return parseInt(val, 10); },
   *   encode: function(val) { return val && val.toString(); },
   *   equals: function(a, b) { return this.is(a) && a === b; },
   *   is: function(val) { return angular.isNumber(val) isFinite(val) && val % 1 === 0; },
   *   pattern: /\d+/
   * }
   * </pre>
   *
   * @property {RegExp} pattern The regular expression pattern used to match values of this type when
   *           coming from a substring of a URL.
   *
   * @returns {Object}  Returns a new `Type` object.
   */
  function Type(config) {
    extend(this, config);
  }
  
  /**
   * @ngdoc function
   * @name ui.router.util.type:Type#is
   * @methodOf ui.router.util.type:Type
   *
   * @description
   * Detects whether a value is of a particular type. Accepts a native (decoded) value
   * and determines whether it matches the current `Type` object.
   *
   * @param {*} val  The value to check.
   * @param {string} key  Optional. If the type check is happening in the context of a specific
   *        {@link ui.router.util.type:UrlMatcher `UrlMatcher`} object, this is the name of the
   *        parameter in which `val` is stored. Can be used for meta-programming of `Type` objects.
   * @returns {Boolean}  Returns `true` if the value matches the type, otherwise `false`.
   */
  Type.prototype.is = function(val, key) {
    return true;
  };
  
  /**
   * @ngdoc function
   * @name ui.router.util.type:Type#encode
   * @methodOf ui.router.util.type:Type
   *
   * @description
   * Encodes a custom/native type value to a string that can be embedded in a URL. Note that the
   * return value does *not* need to be URL-safe (i.e. passed through `encodeURIComponent()`), it
   * only needs to be a representation of `val` that has been coerced to a string.
   *
   * @param {*} val  The value to encode.
   * @param {string} key  The name of the parameter in which `val` is stored. Can be used for
   *        meta-programming of `Type` objects.
   * @returns {string}  Returns a string representation of `val` that can be encoded in a URL.
   */
  Type.prototype.encode = function(val, key) {
    return val;
  };
  
  /**
   * @ngdoc function
   * @name ui.router.util.type:Type#decode
   * @methodOf ui.router.util.type:Type
   *
   * @description
   * Converts a parameter value (from URL string or transition param) to a custom/native value.
   *
   * @param {string} val  The URL parameter value to decode.
   * @param {string} key  The name of the parameter in which `val` is stored. Can be used for
   *        meta-programming of `Type` objects.
   * @returns {*}  Returns a custom representation of the URL parameter value.
   */
  Type.prototype.decode = function(val, key) {
    return val;
  };
  
  /**
   * @ngdoc function
   * @name ui.router.util.type:Type#equals
   * @methodOf ui.router.util.type:Type
   *
   * @description
   * Determines whether two decoded values are equivalent.
   *
   * @param {*} a  A value to compare against.
   * @param {*} b  A value to compare against.
   * @returns {Boolean}  Returns `true` if the values are equivalent/equal, otherwise `false`.
   */
  Type.prototype.equals = function(a, b) {
    return a == b;
  };
  
  Type.prototype.$subPattern = function() {
    var sub = this.pattern.toString();
    return sub.substr(1, sub.length - 2);
  };
  
  Type.prototype.pattern = /.*/;
  
  Type.prototype.toString = function() { return "{Type:" + this.name + "}"; };
  
  /*
   * Wraps an existing custom Type as an array of Type, depending on 'mode'.
   * e.g.:
   * - urlmatcher pattern "/path?{queryParam[]:int}"
   * - url: "/path?queryParam=1&queryParam=2
   * - $stateParams.queryParam will be [1, 2]
   * if `mode` is "auto", then
   * - url: "/path?queryParam=1 will create $stateParams.queryParam: 1
   * - url: "/path?queryParam=1&queryParam=2 will create $stateParams.queryParam: [1, 2]
   */
  Type.prototype.$asArray = function(mode, isSearch) {
    if (!mode) return this;
    if (mode === "auto" && !isSearch) throw new Error("'auto' array mode is for query parameters only");
    return new ArrayType(this, mode);
  
    function ArrayType(type, mode) {
      function bindTo(type, callbackName) {
        return function() {
          return type[callbackName].apply(type, arguments);
        };
      }
  
      // Wrap non-array value as array
      function arrayWrap(val) { return isArray(val) ? val : (isDefined(val) ? [ val ] : []); }
      // Unwrap array value for "auto" mode. Return undefined for empty array.
      function arrayUnwrap(val) {
        switch(val.length) {
          case 0: return undefined;
          case 1: return mode === "auto" ? val[0] : val;
          default: return val;
        }
      }
      function falsey(val) { return !val; }
  
      // Wraps type (.is/.encode/.decode) functions to operate on each value of an array
      function arrayHandler(callback, allTruthyMode) {
        return function handleArray(val) {
          val = arrayWrap(val);
          var result = map(val, callback);
          if (allTruthyMode === true)
            return filter(result, falsey).length === 0;
          return arrayUnwrap(result);
        };
      }
  
      // Wraps type (.equals) functions to operate on each value of an array
      function arrayEqualsHandler(callback) {
        return function handleArray(val1, val2) {
          var left = arrayWrap(val1), right = arrayWrap(val2);
          if (left.length !== right.length) return false;
          for (var i = 0; i < left.length; i++) {
            if (!callback(left[i], right[i])) return false;
          }
          return true;
        };
      }
  
      this.encode = arrayHandler(bindTo(type, 'encode'));
      this.decode = arrayHandler(bindTo(type, 'decode'));
      this.is     = arrayHandler(bindTo(type, 'is'), true);
      this.equals = arrayEqualsHandler(bindTo(type, 'equals'));
      this.pattern = type.pattern;
      this.$arrayMode = mode;
    }
  };
  
  
  
  /**
   * @ngdoc object
   * @name ui.router.util.$urlMatcherFactory
   *
   * @description
   * Factory for {@link ui.router.util.type:UrlMatcher `UrlMatcher`} instances. The factory
   * is also available to providers under the name `$urlMatcherFactoryProvider`.
   */
  function $UrlMatcherFactory() {
    $$UMFP = this;
  
    var isCaseInsensitive = false, isStrictMode = true, defaultSquashPolicy = false;
  
    function valToString(val) { return val != null ? val.toString().replace(/\//g, "%2F") : val; }
    function valFromString(val) { return val != null ? val.toString().replace(/%2F/g, "/") : val; }
  //  TODO: in 1.0, make string .is() return false if value is undefined by default.
  //  function regexpMatches(val) { /*jshint validthis:true */ return isDefined(val) && this.pattern.test(val); }
    function regexpMatches(val) { /*jshint validthis:true */ return this.pattern.test(val); }
  
    var $types = {}, enqueue = true, typeQueue = [], injector, defaultTypes = {
      string: {
        encode: valToString,
        decode: valFromString,
        is: regexpMatches,
        pattern: /[^/]*/
      },
      int: {
        encode: valToString,
        decode: function(val) { return parseInt(val, 10); },
        is: function(val) { return isDefined(val) && this.decode(val.toString()) === val; },
        pattern: /\d+/
      },
      bool: {
        encode: function(val) { return val ? 1 : 0; },
        decode: function(val) { return parseInt(val, 10) !== 0; },
        is: function(val) { return val === true || val === false; },
        pattern: /0|1/
      },
      date: {
        encode: function (val) {
          if (!this.is(val))
            return undefined;
          return [ val.getFullYear(),
            ('0' + (val.getMonth() + 1)).slice(-2),
            ('0' + val.getDate()).slice(-2)
          ].join("-");
        },
        decode: function (val) {
          if (this.is(val)) return val;
          var match = this.capture.exec(val);
          return match ? new Date(match[1], match[2] - 1, match[3]) : undefined;
        },
        is: function(val) { return val instanceof Date && !isNaN(val.valueOf()); },
        equals: function (a, b) { return this.is(a) && this.is(b) && a.toISOString() === b.toISOString(); },
        pattern: /[0-9]{4}-(?:0[1-9]|1[0-2])-(?:0[1-9]|[1-2][0-9]|3[0-1])/,
        capture: /([0-9]{4})-(0[1-9]|1[0-2])-(0[1-9]|[1-2][0-9]|3[0-1])/
      },
      json: {
        encode: angular.toJson,
        decode: angular.fromJson,
        is: angular.isObject,
        equals: angular.equals,
        pattern: /[^/]*/
      },
      any: { // does not encode/decode
        encode: angular.identity,
        decode: angular.identity,
        is: angular.identity,
        equals: angular.equals,
        pattern: /.*/
      }
    };
  
    function getDefaultConfig() {
      return {
        strict: isStrictMode,
        caseInsensitive: isCaseInsensitive
      };
    }
  
    function isInjectable(value) {
      return (isFunction(value) || (isArray(value) && isFunction(value[value.length - 1])));
    }
  
    /**
     * [Internal] Get the default value of a parameter, which may be an injectable function.
     */
    $UrlMatcherFactory.$$getDefaultValue = function(config) {
      if (!isInjectable(config.value)) return config.value;
      if (!injector) throw new Error("Injectable functions cannot be called at configuration time");
      return injector.invoke(config.value);
    };
  
    /**
     * @ngdoc function
     * @name ui.router.util.$urlMatcherFactory#caseInsensitive
     * @methodOf ui.router.util.$urlMatcherFactory
     *
     * @description
     * Defines whether URL matching should be case sensitive (the default behavior), or not.
     *
     * @param {boolean} value `false` to match URL in a case sensitive manner; otherwise `true`;
     * @returns {boolean} the current value of caseInsensitive
     */
    this.caseInsensitive = function(value) {
      if (isDefined(value))
        isCaseInsensitive = value;
      return isCaseInsensitive;
    };
  
    /**
     * @ngdoc function
     * @name ui.router.util.$urlMatcherFactory#strictMode
     * @methodOf ui.router.util.$urlMatcherFactory
     *
     * @description
     * Defines whether URLs should match trailing slashes, or not (the default behavior).
     *
     * @param {boolean=} value `false` to match trailing slashes in URLs, otherwise `true`.
     * @returns {boolean} the current value of strictMode
     */
    this.strictMode = function(value) {
      if (isDefined(value))
        isStrictMode = value;
      return isStrictMode;
    };
  
    /**
     * @ngdoc function
     * @name ui.router.util.$urlMatcherFactory#defaultSquashPolicy
     * @methodOf ui.router.util.$urlMatcherFactory
     *
     * @description
     * Sets the default behavior when generating or matching URLs with default parameter values.
     *
     * @param {string} value A string that defines the default parameter URL squashing behavior.
     *    `nosquash`: When generating an href with a default parameter value, do not squash the parameter value from the URL
     *    `slash`: When generating an href with a default parameter value, squash (remove) the parameter value, and, if the
     *             parameter is surrounded by slashes, squash (remove) one slash from the URL
     *    any other string, e.g. "~": When generating an href with a default parameter value, squash (remove)
     *             the parameter value from the URL and replace it with this string.
     */
    this.defaultSquashPolicy = function(value) {
      if (!isDefined(value)) return defaultSquashPolicy;
      if (value !== true && value !== false && !isString(value))
        throw new Error("Invalid squash policy: " + value + ". Valid policies: false, true, arbitrary-string");
      defaultSquashPolicy = value;
      return value;
    };
  
    /**
     * @ngdoc function
     * @name ui.router.util.$urlMatcherFactory#compile
     * @methodOf ui.router.util.$urlMatcherFactory
     *
     * @description
     * Creates a {@link ui.router.util.type:UrlMatcher `UrlMatcher`} for the specified pattern.
     *
     * @param {string} pattern  The URL pattern.
     * @param {Object} config  The config object hash.
     * @returns {UrlMatcher}  The UrlMatcher.
     */
    this.compile = function (pattern, config) {
      return new UrlMatcher(pattern, extend(getDefaultConfig(), config));
    };
  
    /**
     * @ngdoc function
     * @name ui.router.util.$urlMatcherFactory#isMatcher
     * @methodOf ui.router.util.$urlMatcherFactory
     *
     * @description
     * Returns true if the specified object is a `UrlMatcher`, or false otherwise.
     *
     * @param {Object} object  The object to perform the type check against.
     * @returns {Boolean}  Returns `true` if the object matches the `UrlMatcher` interface, by
     *          implementing all the same methods.
     */
    this.isMatcher = function (o) {
      if (!isObject(o)) return false;
      var result = true;
  
      forEach(UrlMatcher.prototype, function(val, name) {
        if (isFunction(val)) {
          result = result && (isDefined(o[name]) && isFunction(o[name]));
        }
      });
      return result;
    };
  
    /**
     * @ngdoc function
     * @name ui.router.util.$urlMatcherFactory#type
     * @methodOf ui.router.util.$urlMatcherFactory
     *
     * @description
     * Registers a custom {@link ui.router.util.type:Type `Type`} object that can be used to
     * generate URLs with typed parameters.
     *
     * @param {string} name  The type name.
     * @param {Object|Function} definition   The type definition. See
     *        {@link ui.router.util.type:Type `Type`} for information on the values accepted.
     * @param {Object|Function} definitionFn (optional) A function that is injected before the app
     *        runtime starts.  The result of this function is merged into the existing `definition`.
     *        See {@link ui.router.util.type:Type `Type`} for information on the values accepted.
     *
     * @returns {Object}  Returns `$urlMatcherFactoryProvider`.
     *
     * @example
     * This is a simple example of a custom type that encodes and decodes items from an
     * array, using the array index as the URL-encoded value:
     *
     * <pre>
     * var list = ['John', 'Paul', 'George', 'Ringo'];
     *
     * $urlMatcherFactoryProvider.type('listItem', {
     *   encode: function(item) {
     *     // Represent the list item in the URL using its corresponding index
     *     return list.indexOf(item);
     *   },
     *   decode: function(item) {
     *     // Look up the list item by index
     *     return list[parseInt(item, 10)];
     *   },
     *   is: function(item) {
     *     // Ensure the item is valid by checking to see that it appears
     *     // in the list
     *     return list.indexOf(item) > -1;
     *   }
     * });
     *
     * $stateProvider.state('list', {
     *   url: "/list/{item:listItem}",
     *   controller: function($scope, $stateParams) {
     *     console.log($stateParams.item);
     *   }
     * });
     *
     * // ...
     *
     * // Changes URL to '/list/3', logs "Ringo" to the console
     * $state.go('list', { item: "Ringo" });
     * </pre>
     *
     * This is a more complex example of a type that relies on dependency injection to
     * interact with services, and uses the parameter name from the URL to infer how to
     * handle encoding and decoding parameter values:
     *
     * <pre>
     * // Defines a custom type that gets a value from a service,
     * // where each service gets different types of values from
     * // a backend API:
     * $urlMatcherFactoryProvider.type('dbObject', {}, function(Users, Posts) {
     *
     *   // Matches up services to URL parameter names
     *   var services = {
     *     user: Users,
     *     post: Posts
     *   };
     *
     *   return {
     *     encode: function(object) {
     *       // Represent the object in the URL using its unique ID
     *       return object.id;
     *     },
     *     decode: function(value, key) {
     *       // Look up the object by ID, using the parameter
     *       // name (key) to call the correct service
     *       return services[key].findById(value);
     *     },
     *     is: function(object, key) {
     *       // Check that object is a valid dbObject
     *       return angular.isObject(object) && object.id && services[key];
     *     }
     *     equals: function(a, b) {
     *       // Check the equality of decoded objects by comparing
     *       // their unique IDs
     *       return a.id === b.id;
     *     }
     *   };
     * });
     *
     * // In a config() block, you can then attach URLs with
     * // type-annotated parameters:
     * $stateProvider.state('users', {
     *   url: "/users",
     *   // ...
     * }).state('users.item', {
     *   url: "/{user:dbObject}",
     *   controller: function($scope, $stateParams) {
     *     // $stateParams.user will now be an object returned from
     *     // the Users service
     *   },
     *   // ...
     * });
     * </pre>
     */
    this.type = function (name, definition, definitionFn) {
      if (!isDefined(definition)) return $types[name];
      if ($types.hasOwnProperty(name)) throw new Error("A type named '" + name + "' has already been defined.");
  
      $types[name] = new Type(extend({ name: name }, definition));
      if (definitionFn) {
        typeQueue.push({ name: name, def: definitionFn });
        if (!enqueue) flushTypeQueue();
      }
      return this;
    };
  
    // `flushTypeQueue()` waits until `$urlMatcherFactory` is injected before invoking the queued `definitionFn`s
    function flushTypeQueue() {
      while(typeQueue.length) {
        var type = typeQueue.shift();
        if (type.pattern) throw new Error("You cannot override a type's .pattern at runtime.");
        angular.extend($types[type.name], injector.invoke(type.def));
      }
    }
  
    // Register default types. Store them in the prototype of $types.
    forEach(defaultTypes, function(type, name) { $types[name] = new Type(extend({name: name}, type)); });
    $types = inherit($types, {});
  
    /* No need to document $get, since it returns this */
    this.$get = ['$injector', function ($injector) {
      injector = $injector;
      enqueue = false;
      flushTypeQueue();
  
      forEach(defaultTypes, function(type, name) {
        if (!$types[name]) $types[name] = new Type(type);
      });
      return this;
    }];
  
    this.Param = function Param(id, type, config, location) {
      var self = this;
      config = unwrapShorthand(config);
      type = getType(config, type, location);
      var arrayMode = getArrayMode();
      type = arrayMode ? type.$asArray(arrayMode, location === "search") : type;
      if (type.name === "string" && !arrayMode && location === "path" && config.value === undefined)
        config.value = ""; // for 0.2.x; in 0.3.0+ do not automatically default to ""
      var isOptional = config.value !== undefined;
      var squash = getSquashPolicy(config, isOptional);
      var replace = getReplace(config, arrayMode, isOptional, squash);
  
      function unwrapShorthand(config) {
        var keys = isObject(config) ? objectKeys(config) : [];
        var isShorthand = indexOf(keys, "value") === -1 && indexOf(keys, "type") === -1 &&
                          indexOf(keys, "squash") === -1 && indexOf(keys, "array") === -1;
        if (isShorthand) config = { value: config };
        config.$$fn = isInjectable(config.value) ? config.value : function () { return config.value; };
        return config;
      }
  
      function getType(config, urlType, location) {
        if (config.type && urlType) throw new Error("Param '"+id+"' has two type configurations.");
        if (urlType) return urlType;
        if (!config.type) return (location === "config" ? $types.any : $types.string);
        return config.type instanceof Type ? config.type : new Type(config.type);
      }
  
      // array config: param name (param[]) overrides default settings.  explicit config overrides param name.
      function getArrayMode() {
        var arrayDefaults = { array: (location === "search" ? "auto" : false) };
        var arrayParamNomenclature = id.match(/\[\]$/) ? { array: true } : {};
        return extend(arrayDefaults, arrayParamNomenclature, config).array;
      }
  
      /**
       * returns false, true, or the squash value to indicate the "default parameter url squash policy".
       */
      function getSquashPolicy(config, isOptional) {
        var squash = config.squash;
        if (!isOptional || squash === false) return false;
        if (!isDefined(squash) || squash == null) return defaultSquashPolicy;
        if (squash === true || isString(squash)) return squash;
        throw new Error("Invalid squash policy: '" + squash + "'. Valid policies: false, true, or arbitrary string");
      }
  
      function getReplace(config, arrayMode, isOptional, squash) {
        var replace, configuredKeys, defaultPolicy = [
          { from: "",   to: (isOptional || arrayMode ? undefined : "") },
          { from: null, to: (isOptional || arrayMode ? undefined : "") }
        ];
        replace = isArray(config.replace) ? config.replace : [];
        if (isString(squash))
          replace.push({ from: squash, to: undefined });
        configuredKeys = map(replace, function(item) { return item.from; } );
        return filter(defaultPolicy, function(item) { return indexOf(configuredKeys, item.from) === -1; }).concat(replace);
      }
  
      /**
       * [Internal] Get the default value of a parameter, which may be an injectable function.
       */
      function $$getDefaultValue() {
        if (!injector) throw new Error("Injectable functions cannot be called at configuration time");
        return injector.invoke(config.$$fn);
      }
  
      /**
       * [Internal] Gets the decoded representation of a value if the value is defined, otherwise, returns the
       * default value, which may be the result of an injectable function.
       */
      function $value(value) {
        function hasReplaceVal(val) { return function(obj) { return obj.from === val; }; }
        function $replace(value) {
          var replacement = map(filter(self.replace, hasReplaceVal(value)), function(obj) { return obj.to; });
          return replacement.length ? replacement[0] : value;
        }
        value = $replace(value);
        return isDefined(value) ? self.type.decode(value) : $$getDefaultValue();
      }
  
      function toString() { return "{Param:" + id + " " + type + " squash: '" + squash + "' optional: " + isOptional + "}"; }
  
      extend(this, {
        id: id,
        type: type,
        location: location,
        array: arrayMode,
        squash: squash,
        replace: replace,
        isOptional: isOptional,
        value: $value,
        dynamic: undefined,
        config: config,
        toString: toString
      });
    };
  
    function ParamSet(params) {
      extend(this, params || {});
    }
  
    ParamSet.prototype = {
      $$new: function() {
        return inherit(this, extend(new ParamSet(), { $$parent: this}));
      },
      $$keys: function () {
        var keys = [], chain = [], parent = this,
          ignore = objectKeys(ParamSet.prototype);
        while (parent) { chain.push(parent); parent = parent.$$parent; }
        chain.reverse();
        forEach(chain, function(paramset) {
          forEach(objectKeys(paramset), function(key) {
              if (indexOf(keys, key) === -1 && indexOf(ignore, key) === -1) keys.push(key);
          });
        });
        return keys;
      },
      $$values: function(paramValues) {
        var values = {}, self = this;
        forEach(self.$$keys(), function(key) {
          values[key] = self[key].value(paramValues && paramValues[key]);
        });
        return values;
      },
      $$equals: function(paramValues1, paramValues2) {
        var equal = true, self = this;
        forEach(self.$$keys(), function(key) {
          var left = paramValues1 && paramValues1[key], right = paramValues2 && paramValues2[key];
          if (!self[key].type.equals(left, right)) equal = false;
        });
        return equal;
      },
      $$validates: function $$validate(paramValues) {
        var result = true, isOptional, val, param, self = this;
  
        forEach(this.$$keys(), function(key) {
          param = self[key];
          val = paramValues[key];
          isOptional = !val && param.isOptional;
          result = result && (isOptional || !!param.type.is(val));
        });
        return result;
      },
      $$parent: undefined
    };
  
    this.ParamSet = ParamSet;
  }
  
  // Register as a provider so it's available to other providers
  angular.module('ui.router.util').provider('$urlMatcherFactory', $UrlMatcherFactory);
  angular.module('ui.router.util').run(['$urlMatcherFactory', function($urlMatcherFactory) { }]);
  