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+/*-
+ * ============LICENSE_START=======================================================
+ * SDC
+ * ================================================================================
+ * Copyright (C) 2017 AT&T Intellectual Property. 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.
+ * ============LICENSE_END=========================================================
+ */
+/**
+
+ This code was copy from collections.ts lib
+ https://github.com/basarat/typescript-collections
+**/
+
+module Sdc.Utils{
+ 'use strict';
+
+ // Used internally by dictionary
+ interface IDictionaryPair<K, V>{
+ key: K;
+ value: V;
+ }
+
+ export class Dictionary<K, V>{
+
+ /**
+ * Object holding the key-value pairs.
+ * @type {Object}
+ * @private
+ */
+ private table: { [key: string]: IDictionaryPair<K, V> };
+ //: [key: K] will not work since indices can only by strings in javascript and typescript enforces this.
+
+ /**
+ * Number of elements in the list.
+ * @type {number}
+ * @private
+ */
+ private nElements: number;
+
+ /**
+ * Function used to convert keys to strings.
+ * @type {function(Object):string}
+ * @private
+ */
+ private toStr: (key: K) => string;
+
+
+ /**
+ * Creates an empty dictionary.
+ * @class <p>Dictionaries map keys to values; each key can map to at most one value.
+ * This implementation accepts any kind of objects as keys.</p>
+ *
+ * <p>If the keys are custom objects a function which converts keys to unique
+ * strings must be provided. Example:</p>
+ * <pre>
+ * function petToString(pet) {
+ * return pet.name;
+ * }
+ * </pre>
+ * @constructor
+ * @param {function(Object):string=} toStrFunction optional function used
+ * to convert keys to strings. If the keys aren"t strings or if toString()
+ * is not appropriate, a custom function which receives a key and returns a
+ * unique string must be provided.
+ */
+ constructor(toStrFunction?: (key: K) => string) {
+ this.table = {};
+ this.nElements = 0;
+ this.toStr = toStrFunction || this.defaultToString;
+ }
+
+
+ /**
+ copy from angular.js isUndefined
+ */
+ private isUndefined = (value: any):boolean => {
+ return typeof value === 'undefined';
+ }
+
+ defaultToString = (item: any): string => {
+ return item.toString();
+ }
+
+ /**
+ * Returns the value to which this dictionary maps the specified key.
+ * Returns undefined if this dictionary contains no mapping for this key.
+ * @param {Object} key key whose associated value is to be returned.
+ * @return {*} the value to which this dictionary maps the specified key or
+ * undefined if the map contains no mapping for this key.
+ */
+ getValue = (key: K): V => {
+ let pair: IDictionaryPair<K, V> = this.table[this.toStr(key)];
+ if (this.isUndefined(pair)) {
+ return undefined;
+ }
+ return pair.value;
+ }
+
+
+ /**
+ * Associates the specified value with the specified key in this dictionary.
+ * If the dictionary previously contained a mapping for this key, the old
+ * value is replaced by the specified value.
+ * @param {Object} key key with which the specified value is to be
+ * associated.
+ * @param {Object} value value to be associated with the specified key.
+ * @return {*} previous value associated with the specified key, or undefined if
+ * there was no mapping for the key or if the key/value are undefined.
+ */
+ setValue = (key: K, value: V): V => {
+
+ if (this.isUndefined(key) || this.isUndefined(value)) {
+ return undefined;
+ }
+
+ let ret: V;
+ let k = this.toStr(key);
+ let previousElement: IDictionaryPair<K, V> = this.table[k];
+ if (this.isUndefined(previousElement)) {
+ this.nElements++;
+ ret = undefined;
+ } else {
+ ret = previousElement.value;
+ }
+ this.table[k] = {
+ key: key,
+ value: value
+ };
+ return ret;
+ }
+
+ /**
+ * Removes the mapping for this key from this dictionary if it is present.
+ * @param {Object} key key whose mapping is to be removed from the
+ * dictionary.
+ * @return {*} previous value associated with specified key, or undefined if
+ * there was no mapping for key.
+ */
+ remove = (key: K): V => {
+ let k = this.toStr(key);
+ let previousElement: IDictionaryPair<K, V> = this.table[k];
+ if (!this.isUndefined(previousElement)) {
+ delete this.table[k];
+ this.nElements--;
+ return previousElement.value;
+ }
+ return undefined;
+ }
+
+ /**
+ * Returns an array containing all of the keys in this dictionary.
+ * @return {Array} an array containing all of the keys in this dictionary.
+ */
+ keys = (): K[] => {
+ let array: K[] = [];
+ for (let name in this.table) {
+ if (this.table.hasOwnProperty(name)) {
+ let pair: IDictionaryPair<K, V> = this.table[name];
+ array.push(pair.key);
+ }
+ }
+ return array;
+ }
+
+ /**
+ * Returns an array containing all of the values in this dictionary.
+ * @return {Array} an array containing all of the values in this dictionary.
+ */
+ values = (): V[] => {
+ let array: V[] = [];
+ for (let name in this.table) {
+ if (this.table.hasOwnProperty(name)) {
+ let pair: IDictionaryPair<K, V> = this.table[name];
+ array.push(pair.value);
+ }
+ }
+ return array;
+ }
+
+ /**
+ * Executes the provided function once for each key-value pair
+ * present in this dictionary.
+ * @param {function(Object,Object):*} callback function to execute, it is
+ * invoked with two arguments: key and value. To break the iteration you can
+ * optionally return false.
+ */
+ forEach = (callback: (key: K, value: V) => any): void => {
+ for (let name in this.table) {
+ if (this.table.hasOwnProperty(name)) {
+ let pair: IDictionaryPair<K, V> = this.table[name];
+ let ret = callback(pair.key, pair.value);
+ if (ret === false) {
+ return;
+ }
+ }
+ }
+ }
+
+ /**
+ * Returns true if this dictionary contains a mapping for the specified key.
+ * @param {Object} key key whose presence in this dictionary is to be
+ * tested.
+ * @return {boolean} true if this dictionary contains a mapping for the
+ * specified key.
+ */
+ containsKey = (key: K): boolean => {
+ return !this.isUndefined(this.getValue(key));
+ }
+
+ /**
+ * Removes all mappings from this dictionary.
+ * @this {Dictionary}
+ */
+ clear = () => {
+
+ this.table = {};
+ this.nElements = 0;
+ }
+
+ /**
+ * Returns the number of keys in this dictionary.
+ * @return {number} the number of key-value mappings in this dictionary.
+ */
+ size = (): number => {
+ return this.nElements;
+ }
+
+ /**
+ * Returns true if this dictionary contains no mappings.
+ * @return {boolean} true if this dictionary contains no mappings.
+ */
+ isEmpty = (): boolean => {
+ return this.nElements <= 0;
+ }
+
+ toString = (): string => {
+ let toret = "{";
+ this.forEach((k, v) => {
+ toret = toret + "\n\t" + k.toString() + " : " + v.toString();
+ });
+ return toret + "\n}";
+ }
+ } // End of dictionary
+
+}