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import {int, isJsObject} from 'angular2/src/facade/lang';
export var List = window.Array;
export var Map = window.Map;
export var Set = window.Set;
export class MapWrapper {
static create():Map { return new Map(); }
static clone(m:Map):Map { return new Map(m); }
static createFromStringMap(stringMap):Map {
var result = MapWrapper.create();
for (var prop in stringMap) {
MapWrapper.set(result, prop, stringMap[prop]);
}
return result;
}
static createFromPairs(pairs:List):Map {return new Map(pairs);}
static get(m, k) { return m.get(k); }
static set(m, k, v) { m.set(k,v); }
static contains(m, k) { return m.has(k); }
static forEach(m, fn) {
m.forEach(fn);
}
static size(m) {return m.size;}
static delete(m, k) { m.delete(k); }
static clear(m) { m.clear(); }
static iterable(m) { return m; }
static keys(m) { return m.keys(); }
static values(m) { return m.values(); }
}
// TODO: cannot export StringMap as a type as Dart does not support renaming types...
/**
* Wraps Javascript Objects
*/
export class StringMapWrapper {
static create():Object {
// Note: We are not using Object.create(null) here due to
// performance!
// http://jsperf.com/ng2-object-create-null
return { };
}
static get(map, key) {
return map.hasOwnProperty(key) ? map[key] : undefined;
}
static set(map, key, value) {
map[key] = value;
}
static isEmpty(map) {
for (var prop in map) {
return false;
}
return true;
}
static forEach(map, callback) {
for (var prop in map) {
if (map.hasOwnProperty(prop)) {
callback(map[prop], prop);
}
}
}
static merge(m1, m2) {
var m = {};
for (var attr in m1) {
if (m1.hasOwnProperty(attr)){
m[attr] = m1[attr];
}
}
for (var attr in m2) {
if (m2.hasOwnProperty(attr)){
m[attr] = m2[attr];
}
}
return m;
}
}
export class ListWrapper {
static create():List { return new List(); }
static createFixedSize(size):List { return new List(size); }
static get(m, k) { return m[k]; }
static set(m, k, v) { m[k] = v; }
static clone(array:List) {
return array.slice(0);
}
static map(array, fn) {
return array.map(fn);
}
static forEach(array, fn) {
for(var p of array) {
fn(p);
}
}
static push(array, el) {
array.push(el);
}
static first(array) {
if (!array) return null;
return array[0];
}
static last(array) {
if (!array || array.length == 0) return null;
return array[array.length - 1];
}
static find(list:List, pred:Function) {
for (var i = 0 ; i < list.length; ++i) {
if (pred(list[i])) return list[i];
}
return null;
}
static reduce(list:List, fn:Function, init) {
return list.reduce(fn, init);
}
static filter(array, pred:Function) {
return array.filter(pred);
}
static any(list:List, pred:Function) {
for (var i = 0 ; i < list.length; ++i) {
if (pred(list[i])) return true;
}
return false;
}
static contains(list:List, el) {
return list.indexOf(el) !== -1;
}
static reversed(array) {
var a = ListWrapper.clone(array);
return a.reverse();
}
static concat(a, b) {return a.concat(b);}
static isList(list) {
return Array.isArray(list);
}
static insert(list, index:int, value) {
list.splice(index, 0, value);
}
static removeAt(list, index:int) {
var res = list[index];
list.splice(index, 1);
return res;
}
static removeAll(list, items) {
for (var i = 0; i < items.length; ++i) {
var index = list.indexOf(items[i]);
list.splice(index, 1);
}
}
static remove(list, el): boolean {
var index = list.indexOf(el);
if (index > -1) {
list.splice(index, 1);
return true;
}
return false;
}
static clear(list) {
list.splice(0, list.length);
}
static join(list, s) {
return list.join(s);
}
static isEmpty(list) {
return list.length == 0;
}
static fill(list:List, value, start:int = 0, end:int = null) {
list.fill(value, start, end === null ? undefined: end);
}
static equals(a:List, b:List):boolean {
if(a.length != b.length) return false;
for (var i = 0; i < a.length; ++i) {
if (a[i] !== b[i]) return false;
}
return true;
}
static slice(l:List, from:int, to:int):List {
return l.slice(from, to);
}
}
export function isListLikeIterable(obj):boolean {
if (!isJsObject(obj)) return false;
return ListWrapper.isList(obj) ||
(!(obj instanceof Map) && // JS Map are iterables but return entries as [k, v]
Symbol.iterator in obj); // JS Iterable have a Symbol.iterator prop
}
export function iterateListLike(obj, fn:Function) {
for (var item of obj) {
fn(item);
}
}
export class SetWrapper {
static createFromList(lst:List) { return new Set(lst); }
static has(s:Set, key):boolean { return s.has(key); }
}