refactor(compiler): allow to serialize and deserialize DirectiveMetadata

modules/angular2/src/core/change_detection/change_detection.ts

@@ -34,7 +34,7 @@ export {
   DebugContext,
   ChangeDetectorGenConfig
 } from './interfaces';
-export {ChangeDetectionStrategy} from './constants';
+export {ChangeDetectionStrategy, changeDetectionStrategyFromJson} from './constants';
 export {DynamicProtoChangeDetector} from './proto_change_detector';
 export {BindingRecord, BindingTarget} from './binding_record';
 export {DirectiveIndex, DirectiveRecord} from './directive_record';

modules/angular2/src/core/change_detection/constants.ts

@@ -1,5 +1,11 @@
-// TODO:vsavkin Use enums after switching to TypeScript
-import {StringWrapper, normalizeBool, isBlank} from 'angular2/src/core/facade/lang';
+import {
+  StringWrapper,
+  normalizeBool,
+  isBlank,
+  serializeEnum,
+  deserializeEnum
+} from 'angular2/src/core/facade/lang';
+import {MapWrapper} from 'angular2/src/core/facade/collection';
 
 export enum ChangeDetectionStrategy {
   /**
@@ -42,6 +48,20 @@ export enum ChangeDetectionStrategy {
   OnPushObserve
 }
 
+var strategyMap: Map<number, ChangeDetectionStrategy> = MapWrapper.createFromPairs([
+  [0, ChangeDetectionStrategy.CheckOnce],
+  [1, ChangeDetectionStrategy.Checked],
+  [2, ChangeDetectionStrategy.CheckAlways],
+  [3, ChangeDetectionStrategy.Detached],
+  [4, ChangeDetectionStrategy.OnPush],
+  [5, ChangeDetectionStrategy.Default],
+  [6, ChangeDetectionStrategy.OnPushObserve]
+]);
+
+export function changeDetectionStrategyFromJson(value: number): ChangeDetectionStrategy {
+  return deserializeEnum(value, strategyMap);
+}
+
 export function isDefaultChangeDetectionStrategy(changeDetectionStrategy: ChangeDetectionStrategy):
     boolean {
   return isBlank(changeDetectionStrategy) ||

modules/angular2/src/core/render/api.ts

@@ -304,6 +304,12 @@ export enum ViewEncapsulation {
   None
 }
 
+var encapsulationMap: Map<number, ViewEncapsulation> = MapWrapper.createFromPairs(
+    [[0, ViewEncapsulation.Emulated], [1, ViewEncapsulation.Native], [2, ViewEncapsulation.None]]);
+export function viewEncapsulationFromJson(value: number): ViewEncapsulation {
+  return deserializeEnum(value, encapsulationMap);
+}
+
 export class ViewDefinition {
   componentId: string;
   templateAbsUrl: string;