refactor(pipes): use Injector instead of pipe factories for pipe instantiation

BREAKING CHANGE
    - Pipe factories have been removed.
    - PIpe names to pipe implementations are 1-to-1  instead of 1-to-*

 Before:
     class DateFormatter {
         transform(date, args){}
     }

     class DateFormatterFactory {
       supporst(obj) { return true; }
       create(cdRef) { return new DateFormatter(); }
     }
     new Pipes({date: [new DateFormatterFactory()]})

After
    class DateFormatter {
      transform(date, args){}
    }
    new Pipes({date: DateFormatter})

modules/angular2/change_detection.ts

@@ -29,8 +29,5 @@ export {
   KeyValueDiffers,
   KeyValueDiffer,
   KeyValueDifferFactory,
-  PipeFactory,
+  BasePipe
-  BasePipe,
-  NullPipe,
-  NullPipeFactory
 } from 'angular2/src/change_detection/change_detection';

modules/angular2/src/change_detection/change_detection.ts

@@ -1,22 +1,20 @@
 import {JitProtoChangeDetector} from './jit_proto_change_detector';
 import {PregenProtoChangeDetector} from './pregen_proto_change_detector';
 import {DynamicProtoChangeDetector} from './proto_change_detector';
-import {PipeFactory, Pipe} from './pipes/pipe';
 import {Pipes} from './pipes/pipes';
 import {IterableDiffers, IterableDifferFactory} from './differs/iterable_differs';
 import {DefaultIterableDifferFactory} from './differs/default_iterable_differ';
 import {KeyValueDiffers, KeyValueDifferFactory} from './differs/keyvalue_differs';
 import {DefaultKeyValueDifferFactory} from './differs/default_keyvalue_differ';
-import {AsyncPipeFactory} from './pipes/async_pipe';
+import {AsyncPipe} from './pipes/async_pipe';
 import {UpperCasePipe} from './pipes/uppercase_pipe';
 import {LowerCasePipe} from './pipes/lowercase_pipe';
 import {JsonPipe} from './pipes/json_pipe';
-import {LimitToPipeFactory} from './pipes/limit_to_pipe';
+import {LimitToPipe} from './pipes/limit_to_pipe';
 import {DatePipe} from './pipes/date_pipe';
 import {DecimalPipe, PercentPipe, CurrencyPipe} from './pipes/number_pipe';
-import {NullPipeFactory} from './pipes/null_pipe';
 import {ChangeDetection, ProtoChangeDetector, ChangeDetectorDefinition} from './interfaces';
-import {Inject, Injectable, OpaqueToken, Optional} from 'angular2/di';
+import {Injector, Inject, Injectable, OpaqueToken, Optional, Binding} from 'angular2/di';
 import {List, StringMap, StringMapWrapper} from 'angular2/src/facade/collection';
 import {CONST, CONST_EXPR, isPresent, BaseException} from 'angular2/src/facade/lang';
 
@@ -55,10 +53,28 @@ export {ChangeDetectorRef} from './change_detector_ref';
 export {Pipes} from './pipes/pipes';
 export {IterableDiffers, IterableDiffer, IterableDifferFactory} from './differs/iterable_differs';
 export {KeyValueDiffers, KeyValueDiffer, KeyValueDifferFactory} from './differs/keyvalue_differs';
-export {WrappedValue, Pipe, PipeFactory, BasePipe} from './pipes/pipe';
+export {WrappedValue, Pipe, BasePipe} from './pipes/pipe';
-export {NullPipe, NullPipeFactory} from './pipes/null_pipe';
 
 
+function createPipes(inj: Injector): Pipes {
+  return new Pipes(
+      {
+        "async": AsyncPipe,
+        "uppercase": UpperCasePipe,
+        "lowercase": LowerCasePipe,
+        "json": JsonPipe,
+        "limitTo": LimitToPipe,
+        "number": DecimalPipe,
+        "percent": PercentPipe,
+        "currency": CurrencyPipe,
+        "date": DatePipe
+      },
+      inj);
+}
+
+export const defaultPipes: Binding =
+    CONST_EXPR(new Binding(Pipes, {toFactory: createPipes, deps: [Injector]}));
+
 /**
  * Structural diffing for `Object`s and `Map`s.
  */
@@ -71,73 +87,6 @@ export const keyValDiff: KeyValueDifferFactory[] =
 export const iterableDiff: IterableDifferFactory[] =
     CONST_EXPR([CONST_EXPR(new DefaultIterableDifferFactory())]);
 
-/**
- * Async binding to such types as Observable.
- */
-export const async: List<PipeFactory> =
-    CONST_EXPR([CONST_EXPR(new AsyncPipeFactory()), CONST_EXPR(new NullPipeFactory())]);
-
-/**
- * Uppercase text transform.
- */
-export const uppercase: List<PipeFactory> =
-    CONST_EXPR([CONST_EXPR(new UpperCasePipe()), CONST_EXPR(new NullPipeFactory())]);
-
-/**
- * Lowercase text transform.
- */
-export const lowercase: List<PipeFactory> =
-    CONST_EXPR([CONST_EXPR(new LowerCasePipe()), CONST_EXPR(new NullPipeFactory())]);
-
-/**
- * Json stringify transform.
- */
-export const json: List<PipeFactory> =
-    CONST_EXPR([CONST_EXPR(new JsonPipe()), CONST_EXPR(new NullPipeFactory())]);
-
-/**
- * LimitTo text transform.
- */
-export const limitTo: List<PipeFactory> =
-    CONST_EXPR([CONST_EXPR(new LimitToPipeFactory()), CONST_EXPR(new NullPipeFactory())]);
-
-/**
- * Number number transform.
- */
-export const decimal: List<PipeFactory> =
-    CONST_EXPR([CONST_EXPR(new DecimalPipe()), CONST_EXPR(new NullPipeFactory())]);
-
-/**
- * Percent number transform.
- */
-export const percent: List<PipeFactory> =
-    CONST_EXPR([CONST_EXPR(new PercentPipe()), CONST_EXPR(new NullPipeFactory())]);
-
-/**
- * Currency number transform.
- */
-export const currency: List<PipeFactory> =
-    CONST_EXPR([CONST_EXPR(new CurrencyPipe()), CONST_EXPR(new NullPipeFactory())]);
-
-/**
- * Date/time formatter.
- */
-export const date: List<PipeFactory> =
-    CONST_EXPR([CONST_EXPR(new DatePipe()), CONST_EXPR(new NullPipeFactory())]);
-
-
-export const defaultPipes: Pipes = CONST_EXPR(new Pipes({
-  "async": async,
-  "uppercase": uppercase,
-  "lowercase": lowercase,
-  "json": json,
-  "limitTo": limitTo,
-  "number": decimal,
-  "percent": percent,
-  "currency": currency,
-  "date": date
-}));
-
 export const defaultIterableDiffers = CONST_EXPR(new IterableDiffers(iterableDiff));
 
 export const defaultKeyValueDiffers = CONST_EXPR(new KeyValueDiffers(keyValDiff));

modules/angular2/src/change_detection/change_detection_jit_generator.ts

@@ -184,10 +184,7 @@ export class ChangeDetectorJITGenerator {
 
     var read = `
       if (${pipe} === ${UTIL}.uninitialized) {
-        ${pipe} = ${this._names.getPipesAccessorName()}.get('${pipeType}', ${context}, ${cdRef});
+        ${pipe} = ${this._names.getPipesAccessorName()}.get('${pipeType}', ${cdRef});
-      } else if (!${pipe}.supports(${context})) {
-        ${pipe}.onDestroy();
-        ${pipe} = ${this._names.getPipesAccessorName()}.get('${pipeType}', ${context}, ${cdRef});
       }
       ${newValue} = ${pipe}.transform(${context}, [${argString}]);
     `;

modules/angular2/src/change_detection/dynamic_change_detector.ts

@@ -267,13 +267,9 @@ export class DynamicChangeDetector extends AbstractChangeDetector<any> {
 
   _pipeFor(proto: ProtoRecord, context) {
     var storedPipe = this._readPipe(proto);
-    if (isPresent(storedPipe) && storedPipe.supports(context)) {
+    if (isPresent(storedPipe)) return storedPipe;
-      return storedPipe;
+
-    }
+    var pipe = this.pipes.get(proto.name, this.ref);
-    if (isPresent(storedPipe)) {
-      storedPipe.onDestroy();
-    }
-    var pipe = this.pipes.get(proto.name, context, this.ref);
     this._writePipe(proto, pipe);
     return pipe;
   }

modules/angular2/src/change_detection/pipes/async_pipe.ts

@@ -1,6 +1,7 @@
 import {isBlank, isPresent, isPromise, CONST, BaseException} from 'angular2/src/facade/lang';
 import {Observable, Promise, ObservableWrapper} from 'angular2/src/facade/async';
-import {Pipe, WrappedValue, PipeFactory} from './pipe';
+import {Injectable} from 'angular2/di';
+import {Pipe, WrappedValue, InvalidPipeArgumentException} from './pipe';
 import {ChangeDetectorRef} from '../change_detector_ref';
 
 
@@ -52,6 +53,7 @@ var _observableStrategy = new ObservableStrategy();
  *
  * ```
  */
+@Injectable()
 export class AsyncPipe implements Pipe {
   _latestValue: Object = null;
   _latestReturnedValue: Object = null;
@@ -62,8 +64,6 @@ export class AsyncPipe implements Pipe {
 
   constructor(public _ref: ChangeDetectorRef) {}
 
-  supports(obj: any): boolean { return true; }
-
   onDestroy(): void {
     if (isPresent(this._subscription)) {
       this._dispose();
@@ -98,13 +98,13 @@ export class AsyncPipe implements Pipe {
         this._strategy.createSubscription(obj, value => this._updateLatestValue(obj, value));
   }
 
-  _selectStrategy(obj: Observable | Promise<any>) {
+  _selectStrategy(obj: Observable | Promise<any>): any {
     if (isPromise(obj)) {
       return _promiseStrategy;
     } else if (ObservableWrapper.isObservable(obj)) {
       return _observableStrategy;
     } else {
-      throw new BaseException(`Async pipe does not support object '${obj}'`);
+      throw new InvalidPipeArgumentException(AsyncPipe, obj);
     }
   }
 
@@ -123,12 +123,3 @@ export class AsyncPipe implements Pipe {
     }
   }
 }
-
-/**
- * Provides a factory for [AsyncPipe].
- */
-@CONST()
-export class AsyncPipeFactory implements PipeFactory {
-  supports(obj: any): boolean { return true; }
-  create(cdRef: ChangeDetectorRef): Pipe { return new AsyncPipe(cdRef); }
-}

modules/angular2/src/change_detection/pipes/date_pipe.ts

@@ -5,12 +5,13 @@ import {
   Date,
   DateWrapper,
   CONST,
+  isBlank,
   FunctionWrapper
 } from 'angular2/src/facade/lang';
 import {DateFormatter} from 'angular2/src/facade/intl';
+import {Injectable} from 'angular2/di';
 import {StringMapWrapper, ListWrapper} from 'angular2/src/facade/collection';
-import {Pipe, BasePipe, PipeFactory} from './pipe';
+import {Pipe, BasePipe, InvalidPipeArgumentException} from './pipe';
-import {ChangeDetectorRef} from '../change_detector_ref';
 
 // TODO: move to a global configable location along with other i18n components.
 var defaultLocale: string = 'en-US';
@@ -70,7 +71,8 @@ var defaultLocale: string = 'en-US';
  *     {{ dateObj | date:'mmss' }}        // output is '43:11'
  */
 @CONST()
-export class DatePipe extends BasePipe implements PipeFactory {
+@Injectable()
+export class DatePipe extends BasePipe {
   static _ALIASES = {
     'medium': 'yMMMdjms',
     'short': 'yMdjm',
@@ -84,6 +86,12 @@ export class DatePipe extends BasePipe implements PipeFactory {
 
 
   transform(value: any, args: List<any>): string {
+    if (isBlank(value)) return null;
+
+    if (!this.supports(value)) {
+      throw new InvalidPipeArgumentException(DatePipe, value);
+    }
+
     var pattern: string = isPresent(args) && args.length > 0 ? args[0] : 'mediumDate';
     if (isNumber(value)) {
       value = DateWrapper.fromMillis(value);
@@ -95,6 +103,4 @@ export class DatePipe extends BasePipe implements PipeFactory {
   }
 
   supports(obj: any): boolean { return isDate(obj) || isNumber(obj); }
-
-  create(cdRef: ChangeDetectorRef): Pipe { return this; }
 }

modules/angular2/src/change_detection/pipes/json_pipe.ts

@@ -1,6 +1,6 @@
 import {isBlank, isPresent, Json, CONST} from 'angular2/src/facade/lang';
-import {Pipe, BasePipe, PipeFactory} from './pipe';
+import {Injectable} from 'angular2/di';
-import {ChangeDetectorRef} from '../change_detector_ref';
+import {Pipe, BasePipe} from './pipe';
 
 /**
  * Implements json transforms to any object.
@@ -26,8 +26,7 @@ import {ChangeDetectorRef} from '../change_detector_ref';
  * ```
  */
 @CONST()
-export class JsonPipe extends BasePipe implements PipeFactory {
+@Injectable()
+export class JsonPipe extends BasePipe {
   transform(value: any, args: List<any> = null): string { return Json.stringify(value); }
-
-  create(cdRef: ChangeDetectorRef): Pipe { return this; }
 }

modules/angular2/src/change_detection/pipes/limit_to_pipe.ts

@@ -8,8 +8,8 @@ import {
 } from 'angular2/src/facade/lang';
 import {ListWrapper} from 'angular2/src/facade/collection';
 import {Math} from 'angular2/src/facade/math';
-import {WrappedValue, Pipe, PipeFactory} from './pipe';
+import {Injectable} from 'angular2/di';
-import {ChangeDetectorRef} from '../change_detector_ref';
+import {WrappedValue, Pipe, InvalidPipeArgumentException} from './pipe';
 
 /**
  * Creates a new List or String containing only a prefix/suffix of the
@@ -50,15 +50,18 @@ import {ChangeDetectorRef} from '../change_detector_ref';
  *     {{ 'abcdefghij' | limitTo: -4 }}      // output is 'ghij'
  *     {{ 'abcdefghij' | limitTo: -100 }}    // output is 'abcdefghij'
  */
+@Injectable()
 export class LimitToPipe implements Pipe {
-  static supportsObj(obj: any): boolean { return isString(obj) || isArray(obj); }
+  supports(obj: any): boolean { return isString(obj) || isArray(obj); }
-
-  supports(obj: any): boolean { return LimitToPipe.supportsObj(obj); }
 
   transform(value: any, args: List<any> = null): any {
     if (isBlank(args) || args.length == 0) {
       throw new BaseException('limitTo pipe requires one argument');
     }
+    if (!this.supports(value)) {
+      throw new InvalidPipeArgumentException(LimitToPipe, value);
+    }
+    if (isBlank(value)) return value;
     var limit: int = args[0];
     var left = 0, right = Math.min(limit, value.length);
     if (limit < 0) {
@@ -73,10 +76,3 @@ export class LimitToPipe implements Pipe {
 
   onDestroy(): void {}
 }
-
-@CONST()
-export class LimitToPipeFactory implements PipeFactory {
-  supports(obj: any): boolean { return LimitToPipe.supportsObj(obj); }
-
-  create(cdRef: ChangeDetectorRef): Pipe { return new LimitToPipe(); }
-}

modules/angular2/src/change_detection/pipes/lowercase_pipe.ts

@@ -1,6 +1,6 @@
-import {isString, StringWrapper, CONST} from 'angular2/src/facade/lang';
+import {isString, StringWrapper, CONST, isBlank} from 'angular2/src/facade/lang';
-import {Pipe, BasePipe, PipeFactory} from './pipe';
+import {Injectable} from 'angular2/di';
-import {ChangeDetectorRef} from '../change_detector_ref';
+import {Pipe, BasePipe, InvalidPipeArgumentException} from './pipe';
 
 /**
  * Implements lowercase transforms to text.
@@ -23,12 +23,13 @@ import {ChangeDetectorRef} from '../change_detector_ref';
  * ```
  */
 @CONST()
-export class LowerCasePipe extends BasePipe implements PipeFactory {
+@Injectable()
-  supports(str: any): boolean { return isString(str); }
+export class LowerCasePipe extends BasePipe {
-
   transform(value: string, args: List<any> = null): string {
+    if (isBlank(value)) return value;
+    if (!isString(value)) {
+      throw new InvalidPipeArgumentException(LowerCasePipe, value);
+    }
     return StringWrapper.toLowerCase(value);
   }
-
-  create(cdRef: ChangeDetectorRef): Pipe { return this; }
 }

modules/angular2/src/change_detection/pipes/null_pipe.ts

@@ -1,27 +0,0 @@
-import {isBlank, CONST} from 'angular2/src/facade/lang';
-import {Pipe, BasePipe, WrappedValue, PipeFactory} from './pipe';
-import {ChangeDetectorRef} from '../change_detector_ref';
-
-@CONST()
-export class NullPipeFactory implements PipeFactory {
-  supports(obj: any): boolean { return NullPipe.supportsObj(obj); }
-
-  create(cdRef: ChangeDetectorRef): Pipe { return new NullPipe(); }
-}
-
-export class NullPipe extends BasePipe {
-  called: boolean = false;
-
-  static supportsObj(obj: any): boolean { return isBlank(obj); }
-
-  supports(obj: any): boolean { return NullPipe.supportsObj(obj); }
-
-  transform(value: any, args: List<any> = null): WrappedValue {
-    if (!this.called) {
-      this.called = true;
-      return WrappedValue.wrap(null);
-    } else {
-      return null;
-    }
-  }
-}

modules/angular2/src/change_detection/pipes/number_pipe.ts

@@ -10,17 +10,22 @@ import {
   FunctionWrapper
 } from 'angular2/src/facade/lang';
 import {NumberFormatter, NumberFormatStyle} from 'angular2/src/facade/intl';
+import {Injectable} from 'angular2/di';
 import {ListWrapper} from 'angular2/src/facade/collection';
-import {Pipe, BasePipe, PipeFactory} from './pipe';
+import {Pipe, BasePipe, InvalidPipeArgumentException} from './pipe';
-import {ChangeDetectorRef} from '../change_detector_ref';
 
 var defaultLocale: string = 'en-US';
 var _re = RegExpWrapper.create('^(\\d+)?\\.((\\d+)(\\-(\\d+))?)?$');
 
 @CONST()
-export class NumberPipe extends BasePipe implements PipeFactory {
+@Injectable()
+export class NumberPipe extends BasePipe {
   static _format(value: number, style: NumberFormatStyle, digits: string, currency: string = null,
                  currencyAsSymbol: boolean = false): string {
+    if (isBlank(value)) return null;
+    if (!isNumber(value)) {
+      throw new InvalidPipeArgumentException(NumberPipe, value);
+    }
     var minInt = 1, minFraction = 0, maxFraction = 3;
     if (isPresent(digits)) {
       var parts = RegExpWrapper.firstMatch(_re, digits);
@@ -45,10 +50,6 @@ export class NumberPipe extends BasePipe implements PipeFactory {
       currencyAsSymbol: currencyAsSymbol
     });
   }
-
-  supports(obj: any): boolean { return isNumber(obj); }
-
-  create(cdRef: ChangeDetectorRef): Pipe { return this; }
 }
 
 /**

modules/angular2/src/change_detection/pipes/pipe.ts

@@ -1,5 +1,4 @@
-import {ABSTRACT, BaseException, CONST} from 'angular2/src/facade/lang';
+import {ABSTRACT, BaseException, CONST, Type} from 'angular2/src/facade/lang';
-import {ChangeDetectorRef} from '../change_detector_ref';
 
 /**
  * Indicates that the result of a {@link Pipe} transformation has changed even though the reference
@@ -50,8 +49,6 @@ export interface Pipe {
   /**
    * Query if a pipe supports a particular object instance.
    */
-  supports(obj): boolean;
-
   onDestroy(): void;
 
   transform(value: any, args: List<any>): any;
@@ -72,17 +69,14 @@ export interface Pipe {
  */
 @CONST()
 export class BasePipe implements Pipe {
-  supports(obj: any): boolean { return true; }
   onDestroy(): void {}
   transform(value: any, args: List<any>): any { return _abstract(); }
 }
 
-/**
+export class InvalidPipeArgumentException extends BaseException {
- *
+  constructor(type: Type, value: Object) {
- */
+    super(`Invalid argument '${value}' for pipe '${type}'`);
-export interface PipeFactory {
+  }
-  supports(obs): boolean;
-  create(cdRef: ChangeDetectorRef): Pipe;
 }
 
 function _abstract() {

modules/angular2/src/change_detection/pipes/pipes.ts

@@ -1,44 +1,42 @@
 import {ListWrapper, isListLikeIterable, StringMapWrapper} from 'angular2/src/facade/collection';
-import {isBlank, isPresent, BaseException, CONST} from 'angular2/src/facade/lang';
+import {isBlank, isPresent, BaseException, CONST, Type} from 'angular2/src/facade/lang';
-import {Pipe, PipeFactory} from './pipe';
+import {Pipe} from './pipe';
-import {Injectable, OptionalMetadata, SkipSelfMetadata} from 'angular2/di';
+import {Injectable, OptionalMetadata, SkipSelfMetadata, Binding, Injector, bind} from 'angular2/di';
 import {ChangeDetectorRef} from '../change_detector_ref';
-import {Binding} from 'angular2/di';
 
 @Injectable()
 @CONST()
 export class Pipes {
   /**
-   * Map of {@link Pipe} names to {@link PipeFactory} lists used to configure the
+   * Map of {@link Pipe} names to {@link Pipe} implementations.
-   * {@link Pipes} registry.
    *
    * #Example
    *
    * ```
    * var pipesConfig = {
-   *   'json': [jsonPipeFactory]
+   *   'json': JsonPipe
    * }
    * @Component({
    *   viewBindings: [
-   *     bind(Pipes).toValue(new Pipes(pipesConfig))
+   *     bind(Pipes).toFactory(inj => new Pipes(pipesConfig, in), [Injector])
    *   ]
    * })
    * ```
    */
-  config: StringMap<string, PipeFactory[]>;
+  config: StringMap<string, Type | Binding>;
 
+  constructor(config: StringMap<string, Type | Binding>, public injector: Injector) {
+    this.config = config;
+  }
 
-  constructor(config: StringMap<string, PipeFactory[]>) { this.config = config; }
+  get(type: string, cdRef: ChangeDetectorRef): Pipe {
-
+    var typeOrBinding = this.config[type];
-  get(type: string, obj: any, cdRef?: ChangeDetectorRef, existingPipe?: Pipe): Pipe {
+    if (isBlank(typeOrBinding)) {
-    if (isPresent(existingPipe) && existingPipe.supports(obj)) return existingPipe;
+      throw new BaseException(`Cannot find pipe '${type}'.`);
-
+    }
-    if (isPresent(existingPipe)) existingPipe.onDestroy();
+    // this is a temporary workaround and will be removed
-
+    return this.injector.resolveAndCreateChild([bind(ChangeDetectorRef).toValue(cdRef)])
-    var factories = this._getListOfFactories(type, obj);
+        .resolveAndInstantiate(typeOrBinding);
-    var factory = this._getMatchingFactory(factories, type, obj);
-
-    return factory.create(cdRef);
   }
 
   /**
@@ -46,16 +44,7 @@ export class Pipes {
    * inherited {@link Pipes} instance with the provided config and return a new
    * {@link Pipes} instance.
    *
-   * If the provided config contains a key that is not yet present in the
+   * The provided config is merged with the {@link Pipes} instance.
-   * inherited {@link Pipes}' config, a new {@link PipeFactory} list will be created
-   * for that key. Otherwise, the provided config will be merged with the inherited
-   * {@link Pipes} instance by prepending pipes to their respective keys, without mutating
-   * the inherited {@link Pipes}.
-   *
-   * The following example shows how to extend an existing list of `async` factories
-   * with a new {@link PipeFactory}, which will only be applied to the injector
-   * for this component and its children. This step is all that's required to make a new
-   * pipe available to this component's template.
    *
    * # Example
    *
@@ -63,55 +52,33 @@ export class Pipes {
    * @Component({
    *   viewBindings: [
    *     Pipes.extend({
-   *       async: [newAsyncPipe]
+   *       'bithdayFormat': BirthdayFormat
    *     })
    *   ]
    * })
    * ```
    */
-  static extend(config: StringMap<string, PipeFactory[]>): Binding {
+  static extend(config: StringMap<string, Type | Binding>): Binding {
     return new Binding(Pipes, {
-      toFactory: (pipes: Pipes) => {
+      toFactory: (pipes: Pipes, injector: Injector) => {
         if (isBlank(pipes)) {
           // Typically would occur when calling Pipe.extend inside of dependencies passed to
           // bootstrap(), which would override default pipes instead of extending them.
           throw new BaseException('Cannot extend Pipes without a parent injector');
         }
-        return Pipes.create(config, pipes);
+        return Pipes.create(config, injector, pipes);
       },
       // Dependency technically isn't optional, but we can provide a better error message this way.
-      deps: [[Pipes, new SkipSelfMetadata(), new OptionalMetadata()]]
+      deps: [[Pipes, new SkipSelfMetadata(), new OptionalMetadata()], Injector]
     });
   }
 
-  static create(config: StringMap<string, PipeFactory[]>, pipes: Pipes = null): Pipes {
+  static create(config: StringMap<string, Type | Binding>, injector: Injector,
+                pipes: Pipes = null): Pipes {
     if (isPresent(pipes)) {
-      StringMapWrapper.forEach(pipes.config, (v: PipeFactory[], k: string) => {
+      return new Pipes(StringMapWrapper.merge(pipes.config, config), injector);
-        if (StringMapWrapper.contains(config, k)) {
+    } else {
-          var configFactories: PipeFactory[] = config[k];
+      return new Pipes(config, injector);
-          config[k] = configFactories.concat(v);
-        } else {
-          config[k] = ListWrapper.clone(v);
-        }
-      });
     }
-    return new Pipes(config);
-  }
-
-  private _getListOfFactories(type: string, obj: any): PipeFactory[] {
-    var listOfFactories = this.config[type];
-    if (isBlank(listOfFactories)) {
-      throw new BaseException(`Cannot find '${type}' pipe supporting object '${obj}'`);
-    }
-    return listOfFactories;
-  }
-
-  private _getMatchingFactory(listOfFactories: PipeFactory[], type: string, obj: any): PipeFactory {
-    var matchingFactory =
-        ListWrapper.find(listOfFactories, pipeFactory => pipeFactory.supports(obj));
-    if (isBlank(matchingFactory)) {
-      throw new BaseException(`Cannot find '${type}' pipe supporting object '${obj}'`);
-    }
-    return matchingFactory;
   }
 }

modules/angular2/src/change_detection/pipes/uppercase_pipe.ts

@@ -1,6 +1,6 @@
-import {isString, StringWrapper, CONST} from 'angular2/src/facade/lang';
+import {isString, StringWrapper, CONST, isBlank} from 'angular2/src/facade/lang';
-import {Pipe, BasePipe, PipeFactory} from './pipe';
+import {Injectable} from 'angular2/di';
-import {ChangeDetectorRef} from '../change_detector_ref';
+import {Pipe, BasePipe, InvalidPipeArgumentException} from './pipe';
 
 /**
  * Implements uppercase transforms to text.
@@ -23,12 +23,13 @@ import {ChangeDetectorRef} from '../change_detector_ref';
  * ```
  */
 @CONST()
-export class UpperCasePipe extends BasePipe implements PipeFactory {
+@Injectable()
-  supports(str: any): boolean { return isString(str); }
+export class UpperCasePipe extends BasePipe {
-
   transform(value: string, args: List<any> = null): string {
+    if (isBlank(value)) return value;
+    if (!isString(value)) {
+      throw new InvalidPipeArgumentException(UpperCasePipe, value);
+    }
     return StringWrapper.toUpperCase(value);
   }
-
-  create(cdRef: ChangeDetectorRef): Pipe { return this; }
 }

modules/angular2/src/core/application_common.ts

@@ -137,7 +137,7 @@ function _injectorBindings(appComponentType): List<Type | Binding | List<any>> {
     Compiler,
     CompilerCache,
     ViewResolver,
-    bind(Pipes).toValue(defaultPipes),
+    defaultPipes,
     bind(IterableDiffers).toValue(defaultIterableDiffers),
     bind(KeyValueDiffers).toValue(defaultKeyValueDiffers),
     bind(ChangeDetection).toClass(bestChangeDetection),

modules/angular2/src/di/injector.ts

@@ -558,7 +558,7 @@ export class Injector {
    * @param `binding`: either a type or a binding.
    * @returns an object created using binding.
    */
-  resolveAndInstantiate(binding: Type | Binding) {
+  resolveAndInstantiate(binding: Type | Binding): any {
     return this.instantiateResolved(Injector.resolve([binding])[0]);
   }
 

modules/angular2/src/test_lib/spies.dart

@@ -19,11 +19,6 @@ class SpyPipe extends SpyObject implements Pipe {
   noSuchMethod(m) => super.noSuchMethod(m);
 }
 
-@proxy()
-class SpyPipeFactory extends SpyObject implements PipeFactory {
-  noSuchMethod(m) => super.noSuchMethod(m);
-}
-
 @proxy()
 class SpyDependencyProvider extends SpyObject implements DependencyProvider {
   noSuchMethod(m) => super.noSuchMethod(m);
@@ -39,3 +34,8 @@ class SpyIterableDifferFactory extends SpyObject
     implements IterableDifferFactory {
   noSuchMethod(m) => super.noSuchMethod(m);
 }
+
+@proxy
+class SpyInjector extends SpyObject implements Injector {
+  noSuchMethod(m) => super.noSuchMethod(m);
+}

modules/angular2/src/test_lib/spies.ts

@@ -22,12 +22,12 @@ export class SpyPipe extends SpyObject {
   constructor() { super(BasePipe); }
 }
 
-export class SpyPipeFactory extends SpyObject {}
-
 export class SpyDependencyProvider extends SpyObject {}
 
 export class SpyIterableDifferFactory extends SpyObject {}
 
+export class SpyInjector extends SpyObject {}
+
 export class SpyChangeDetectorRef extends SpyObject {
   constructor() { super(ChangeDetectorRef); }
 }

modules/angular2/src/test_lib/test_injector.ts

@@ -122,7 +122,7 @@ function _getAppBindings() {
     Compiler,
     CompilerCache,
     bind(ViewResolver).toClass(MockViewResolver),
-    bind(Pipes).toValue(defaultPipes),
+    defaultPipes,
     bind(IterableDiffers).toValue(defaultIterableDiffers),
     bind(KeyValueDiffers).toValue(defaultKeyValueDiffers),
     bind(ChangeDetection).toClass(DynamicChangeDetection),

modules/angular2/src/transform/template_compiler/change_detector_codegen.dart

@@ -274,10 +274,7 @@ class _CodegenState {
 
     var read = '''
       if ($_IDENTICAL_CHECK_FN($pipe, $_UTIL.uninitialized)) {
-        $pipe = ${_names.getPipesAccessorName()}.get('$pipeType', $context, $cdRef);
+        $pipe = ${_names.getPipesAccessorName()}.get('$pipeType', $cdRef);
-      } else if (!$pipe.supports($context)) {
-        $pipe.onDestroy();
-        $pipe = ${_names.getPipesAccessorName()}.get('$pipeType', $context, $cdRef);
       }
       $newValue = $pipe.transform($context, [$argString]);
     ''';

modules/angular2/src/web-workers/worker/application_common.ts

@@ -118,7 +118,7 @@ function _injectorBindings(appComponentType, bus: WorkerMessageBus,
     Compiler,
     CompilerCache,
     ViewResolver,
-    bind(Pipes).toValue(defaultPipes),
+    defaultPipes,
     bind(ChangeDetection).toClass(bestChangeDetection),
     DirectiveResolver,
     Parser,

modules/angular2/test/change_detection/change_detector_spec.ts

@@ -768,7 +768,7 @@ export function main() {
         });
 
         it('should destroy all active pipes during dehyration', () => {
-          var pipe = new OncePipe();
+          var pipe = new PipeWithOnDestroy();
           var registry = new FakePipes('pipe', () => pipe);
           var cd = _createChangeDetector('name | pipe', new Person('bob'), registry).changeDetector;
 
@@ -810,36 +810,6 @@ export function main() {
           expect(val.dispatcher.log).toEqual(['propName=Megatron state:1']);
         });
 
-        it('should lookup pipes in the registry when the context is not supported', () => {
-          var registry = new FakePipes('pipe', () => new OncePipe());
-          var ctx = new Person('Megatron');
-
-          var cd = _createChangeDetector('name | pipe', ctx, registry).changeDetector;
-
-          cd.detectChanges();
-
-          expect(registry.numberOfLookups).toEqual(1);
-
-          ctx.name = 'Optimus Prime';
-          cd.detectChanges();
-
-          expect(registry.numberOfLookups).toEqual(2);
-        });
-
-        it('should invoke onDestroy on a pipe before switching to another one', () => {
-          var pipe = new OncePipe();
-          var registry = new FakePipes('pipe', () => pipe);
-          var ctx = new Person('Megatron');
-
-          var cd = _createChangeDetector('name | pipe', ctx, registry).changeDetector;
-
-          cd.detectChanges();
-          ctx.name = 'Optimus Prime';
-          cd.detectChanges();
-
-          expect(pipe.destroyCalled).toEqual(true);
-        });
-
         it('should inject the ChangeDetectorRef ' +
                'of the encompassing component into a pipe',
            () => {
@@ -886,41 +856,24 @@ export function main() {
 
 class CountingPipe implements Pipe {
   state: number = 0;
-
   onDestroy() {}
-
-  supports(newValue) { return true; }
-
   transform(value, args = null) { return `${value} state:${this.state ++}`; }
 }
 
-class OncePipe implements Pipe {
+class PipeWithOnDestroy implements Pipe {
-  called: boolean = false;
   destroyCalled: boolean = false;
-
-  supports(newValue) { return !this.called; }
-
   onDestroy() { this.destroyCalled = true; }
 
-  transform(value, args = null) {
+  transform(value, args = null) { return null; }
-    this.called = true;
-    return value;
-  }
 }
 
 class IdentityPipe implements Pipe {
-  supports(obj): boolean { return true; }
-
   onDestroy() {}
-
   transform(value, args = null) { return value; }
 }
 
 class WrappedPipe implements Pipe {
-  supports(obj): boolean { return true; }
-
   onDestroy() {}
-
   transform(value, args = null) { return WrappedValue.wrap(value); }
 }
 
@@ -931,24 +884,16 @@ class MultiArgPipe implements Pipe {
     var arg3 = args.length > 2 ? args[2] : 'default';
     return `${value} ${arg1} ${arg2} ${arg3}`;
   }
-  supports(obj): boolean { return true; }
   onDestroy(): void {}
 }
 
 class FakePipes extends Pipes {
-  numberOfLookups: number;
+  numberOfLookups = 0;
-  pipeType: string;
-  factory: Function;
   cdRef: any;
 
-  constructor(pipeType, factory) {
+  constructor(public pipeType: string, public factory: Function) { super(null, null); }
-    super({});
-    this.pipeType = pipeType;
-    this.factory = factory;
-    this.numberOfLookups = 0;
-  }
 
-  get(type: string, obj, cdRef?, existingPipe?) {
+  get(type: string, cdRef?) {
     if (type != this.pipeType) return null;
     this.numberOfLookups++;
     this.cdRef = cdRef;

modules/angular2/test/change_detection/pipes/json_pipe_spec.ts

@@ -20,10 +20,8 @@ import {JsonPipe} from 'angular2/src/change_detection/pipes/json_pipe';
 export function main() {
   describe("JsonPipe", () => {
     var regNewLine = '\n';
-    var canHasUndefined;  // because Dart doesn't like undefined;
     var inceptionObj;
     var inceptionObjString;
-    var catString;
     var pipe;
     var collection: number[];
 
@@ -35,27 +33,10 @@ export function main() {
                            "      \"dream\": \"Limbo\"\n" + "    }\n" + "  }\n" + "}";
 
 
-      catString = 'Inception Cat';
       pipe = new JsonPipe();
       collection = [];
     });
 
-    describe("supports", () => {
-      it("should support objects", () => { expect(pipe.supports(inceptionObj)).toBe(true); });
-
-      it("should support strings", () => { expect(pipe.supports(catString)).toBe(true); });
-
-      it("should support null", () => { expect(pipe.supports(null)).toBe(true); });
-
-      it("should support NaN", () => { expect(pipe.supports(NumberWrapper.NaN)).toBe(true); });
-
-      if (!IS_DARTIUM) {
-        it("should support undefined",
-           () => { expect(pipe.supports(canHasUndefined)).toBe(true); });
-      }
-
-    });
-
     describe("transform", () => {
       it("should return JSON-formatted string",
          () => { expect(pipe.transform(inceptionObj)).toEqual(inceptionObjString); });

modules/angular2/test/change_detection/pipes/lowercase_pipe_spec.ts

@@ -4,29 +4,17 @@ import {LowerCasePipe} from 'angular2/src/change_detection/pipes/lowercase_pipe'
 
 export function main() {
   describe("LowerCasePipe", () => {
-    var str;
     var upper;
     var lower;
     var pipe;
 
     beforeEach(() => {
-      str = 'something';
       lower = 'something';
       upper = 'SOMETHING';
       pipe = new LowerCasePipe();
     });
 
-    describe("supports", () => {
-      it("should support strings", () => { expect(pipe.supports(str)).toBe(true); });
-
-      it("should not support other objects", () => {
-        expect(pipe.supports(new Object())).toBe(false);
-        expect(pipe.supports(null)).toBe(false);
-      });
-    });
-
     describe("transform", () => {
-
       it("should return lowercase", () => {
         var val = pipe.transform(upper);
         expect(val).toEqual(lower);
@@ -39,6 +27,8 @@ export function main() {
         expect(val2).toEqual('wat');
       });
 
+      it("should not support other objects",
+         () => { expect(() => pipe.transform(new Object())).toThrowError(); });
     });
 
   });

modules/angular2/test/change_detection/pipes/number_pipe_spec.ts

@@ -12,18 +12,8 @@ export function main() {
 
     beforeEach(() => { pipe = new DecimalPipe(); });
 
-    describe("supports", () => {
-      it("should support numbers", () => { expect(pipe.supports(123.0)).toBe(true); });
-
-      it("should not support other objects", () => {
-        expect(pipe.supports(new Object())).toBe(false);
-        expect(pipe.supports('str')).toBe(false);
-        expect(pipe.supports(null)).toBe(false);
-      });
-    });
-
     describe("transform", () => {
-      it('should return correct value', () => {
+      it('should return correct value for numbers', () => {
         expect(pipe.transform(12345, [])).toEqual('12,345');
         expect(pipe.transform(123, ['.2'])).toEqual('123.00');
         expect(pipe.transform(1, ['3.'])).toEqual('001');
@@ -31,6 +21,9 @@ export function main() {
         expect(pipe.transform(1.123456, ['3.4-5'])).toEqual('001.12346');
         expect(pipe.transform(1.1234, [])).toEqual('1.123');
       });
+
+      it("should not support other objects",
+         () => { expect(() => pipe.transform(new Object(), [])).toThrowError(); });
     });
   });
 
@@ -39,21 +32,14 @@ export function main() {
 
     beforeEach(() => { pipe = new PercentPipe(); });
 
-    describe("supports", () => {
-      it("should support numbers", () => { expect(pipe.supports(123.0)).toBe(true); });
-
-      it("should not support other objects", () => {
-        expect(pipe.supports(new Object())).toBe(false);
-        expect(pipe.supports('str')).toBe(false);
-        expect(pipe.supports(null)).toBe(false);
-      });
-    });
-
     describe("transform", () => {
-      it('should return correct value', () => {
+      it('should return correct value for numbers', () => {
         expect(pipe.transform(1.23, [])).toEqual('123%');
         expect(pipe.transform(1.2, ['.2'])).toEqual('120.00%');
       });
+
+      it("should not support other objects",
+         () => { expect(() => pipe.transform(new Object(), [])).toThrowError(); });
     });
   });
 
@@ -62,21 +48,14 @@ export function main() {
 
     beforeEach(() => { pipe = new CurrencyPipe(); });
 
-    describe("supports", () => {
-      it("should support numbers", () => { expect(pipe.supports(123.0)).toBe(true); });
-
-      it("should not support other objects", () => {
-        expect(pipe.supports(new Object())).toBe(false);
-        expect(pipe.supports('str')).toBe(false);
-        expect(pipe.supports(null)).toBe(false);
-      });
-    });
-
     describe("transform", () => {
-      it('should return correct value', () => {
+      it('should return correct value for numbers', () => {
         expect(pipe.transform(123, [])).toEqual('USD123');
         expect(pipe.transform(12, ['EUR', false, '.2'])).toEqual('EUR12.00');
       });
+
+      it("should not support other objects",
+         () => { expect(() => pipe.transform(new Object(), [])).toThrowError(); });
     });
   });
 }

modules/angular2/test/change_detection/pipes/pipes_spec.ts

@@ -1,158 +1,88 @@
 import {
   ddescribe,
+  xdescribe,
   describe,
   it,
   iit,
   xit,
   expect,
   beforeEach,
-  afterEach,
+  afterEach
-  SpyPipe,
-  SpyPipeFactory
 } from 'angular2/test_lib';
 
 import {Injector, bind} from 'angular2/di';
 import {Pipes} from 'angular2/src/change_detection/pipes/pipes';
-import {PipeFactory} from 'angular2/src/change_detection/pipes/pipe';
+import {Pipe} from 'angular2/src/change_detection/pipes/pipe';
+
+class APipe implements Pipe {
+  transform(a, b) {}
+  onDestroy() {}
+}
+
+class AnotherPipe implements Pipe {
+  transform(a, b) {}
+  onDestroy() {}
+}
 
 export function main() {
   describe("pipe registry", () => {
-    var firstPipe;
+    var injector;
-    var secondPipe;
 
-    var firstPipeFactory;
+    beforeEach(() => { injector = Injector.resolveAndCreate([]); });
-    var secondPipeFactory;
 
-    beforeEach(() => {
+    it("should instantiate a pipe", () => {
-      firstPipe = <any>new SpyPipe();
+      var r = new Pipes({"type": APipe}, injector);
-      secondPipe = <any>new SpyPipe();
+      expect(r.get("type", null)).toBeAnInstanceOf(APipe);
-
-      firstPipeFactory = <any>new SpyPipeFactory();
-      secondPipeFactory = <any>new SpyPipeFactory();
     });
 
-    it("should return an existing pipe if it can support the passed in object", () => {
+    it("should instantiate a new pipe every time", () => {
-      var r = new Pipes({"type": []});
+      var r = new Pipes({"type": APipe}, injector);
-
+      var p1 = r.get("type", null);
-      firstPipe.spy("supports").andReturn(true);
+      var p2 = r.get("type", null);
-
+      expect(p1).not.toBe(p2);
-      expect(r.get("type", "some object", null, firstPipe)).toEqual(firstPipe);
-    });
-
-    it("should call onDestroy on the provided pipe if it cannot support the provided object",
-       () => {
-         firstPipe.spy("supports").andReturn(false);
-         firstPipeFactory.spy("supports").andReturn(true);
-         firstPipeFactory.spy("create").andReturn(secondPipe);
-
-         var r = new Pipes({"type": [firstPipeFactory]});
-
-         expect(r.get("type", "some object", null, firstPipe)).toEqual(secondPipe);
-         expect(firstPipe.spy("onDestroy")).toHaveBeenCalled();
-       });
-
-    it("should return the first pipe supporting the data type", () => {
-      firstPipeFactory.spy("supports").andReturn(false);
-      firstPipeFactory.spy("create").andReturn(firstPipe);
-
-      secondPipeFactory.spy("supports").andReturn(true);
-      secondPipeFactory.spy("create").andReturn(secondPipe);
-
-      var r = new Pipes({"type": [firstPipeFactory, secondPipeFactory]});
-
-      expect(r.get("type", "some object")).toBe(secondPipe);
     });
 
     it("should throw when no matching type", () => {
-      var r = new Pipes({});
+      var r = new Pipes({}, null);
-      expect(() => r.get("unknown", "some object"))
+      expect(() => r.get("unknown", null)).toThrowError(`Cannot find pipe 'unknown'.`);
-          .toThrowError(`Cannot find 'unknown' pipe supporting object 'some object'`);
-    });
-
-    it("should throw when no matching pipe", () => {
-      var r = new Pipes({"type": []});
-
-      expect(() => r.get("type", "some object"))
-          .toThrowError(`Cannot find 'type' pipe supporting object 'some object'`);
     });
 
     describe('.create()', () => {
       it("should create a new Pipes object", () => {
-        firstPipeFactory.spy("supports").andReturn(true);
+        var pipes = Pipes.create({'pipe': APipe}, null);
-        firstPipeFactory.spy("create").andReturn(firstPipe);
+        expect(pipes.config).toEqual({'pipe': APipe});
-
-        var pipes = Pipes.create({'async': [firstPipeFactory]});
-        expect(pipes.get("async", "first")).toBe(firstPipe);
       });
 
-      it("should prepend passed it config in existing registry", () => {
+      it("should merge pipes config", () => {
-        firstPipeFactory.spy("supports").andReturn(true);
+        var pipes1 = Pipes.create({'pipe': APipe, 'pipe1': APipe}, null);
-        secondPipeFactory.spy("supports").andReturn(true);
+        var pipes2 = Pipes.create({'pipe': AnotherPipe, 'pipe2': AnotherPipe}, null, pipes1);
-        secondPipeFactory.spy("create").andReturn(secondPipe);
 
-        var pipes1 = Pipes.create({'async': [firstPipeFactory]});
+        expect(pipes2.config).toEqual({'pipe': AnotherPipe, 'pipe1': APipe, 'pipe2': AnotherPipe});
-        var pipes2 = Pipes.create({'async': [secondPipeFactory]}, pipes1);
-
-        expect(pipes2.get("async", "first")).toBe(secondPipe);
       });
 
-      it("should use inherited pipes when no overrides support the provided object", () => {
+      it("should not change parent's config", () => {
-        firstPipeFactory.spy("supports").andReturn(true);
+        var pipes1 = Pipes.create({'pipe': APipe, 'pipe1': APipe}, null);
-        firstPipeFactory.spy("create").andReturn(firstPipe);
+        Pipes.create({'pipe': AnotherPipe, 'pipe2': AnotherPipe}, null, pipes1);
-        secondPipeFactory.spy("supports").andReturn(false);
 
-        var pipes1 = Pipes.create({'async': [firstPipeFactory], 'date': [firstPipeFactory]});
+        expect(pipes1.config).toEqual({'pipe': APipe, 'pipe1': APipe});
-        var pipes2 = Pipes.create({'async': [secondPipeFactory]}, pipes1);
-
-        expect(pipes2.get("async", "first")).toBe(firstPipe);
-        expect(pipes2.get("date", "first")).toBe(firstPipe);
       });
     });
 
     describe(".extend()", () => {
       it('should create a factory that prepend new pipes to old', () => {
-        firstPipeFactory.spy("supports").andReturn(true);
+        var pipes1 = Pipes.create({'pipe': APipe, 'pipe1': APipe}, null);
-        secondPipeFactory.spy("supports").andReturn(true);
+        var binding = Pipes.extend({'pipe': AnotherPipe, 'pipe2': AnotherPipe});
-        secondPipeFactory.spy("create").andReturn(secondPipe);
+        var pipes: Pipes = binding.toFactory(pipes1, injector);
 
-        var originalPipes = new Pipes({'async': [firstPipeFactory]});
+        expect(pipes.config).toEqual({'pipe': AnotherPipe, 'pipe1': APipe, 'pipe2': AnotherPipe});
-        var binding = Pipes.extend({'async':<PipeFactory[]>[secondPipeFactory]});
-        var pipes: Pipes = binding.toFactory(originalPipes);
-
-        expect(pipes.config['async'].length).toBe(2);
-        expect(originalPipes.config['async'].length).toBe(1);
-        expect(pipes.get('async', 'second plz')).toBe(secondPipe);
       });
 
       it('should throw if calling extend when creating root injector', () => {
-        secondPipeFactory.spy("supports").andReturn(true);
+        var injector = Injector.resolveAndCreate([Pipes.extend({'pipe': APipe})]);
-        secondPipeFactory.spy("create").andReturn(secondPipe);
-
-        var injector: Injector =
-            Injector.resolveAndCreate([Pipes.extend({'async': [secondPipeFactory]})]);
 
         expect(() => injector.get(Pipes))
             .toThrowErrorWith("Cannot extend Pipes without a parent injector");
       });
-
-      it('should extend di-inherited pipes', () => {
-        firstPipeFactory.spy("supports").andReturn(true);
-        firstPipeFactory.spy("create").andReturn(firstPipe);
-
-        secondPipeFactory.spy("supports").andReturn(false);
-
-        var originalPipes: Pipes = new Pipes({'async': [firstPipeFactory]});
-        var injector: Injector = Injector.resolveAndCreate([bind(Pipes).toValue(originalPipes)]);
-        var childInjector: Injector =
-            injector.resolveAndCreateChild([Pipes.extend({'async': [secondPipeFactory]})]);
-
-        var parentPipes: Pipes = injector.get(Pipes);
-        var childPipes: Pipes = childInjector.get(Pipes);
-
-        expect(childPipes.config['async'].length).toBe(2);
-        expect(parentPipes.config['async'].length).toBe(1);
-        expect(childPipes.get('async', 'second plz')).toBe(firstPipe);
-      });
     });
   });
 }

modules/angular2/test/change_detection/pipes/uppercase_pipe_spec.ts

@@ -4,27 +4,16 @@ import {UpperCasePipe} from 'angular2/src/change_detection/pipes/uppercase_pipe'
 
 export function main() {
   describe("UpperCasePipe", () => {
-    var str;
     var upper;
     var lower;
     var pipe;
 
     beforeEach(() => {
-      str = 'something';
       lower = 'something';
       upper = 'SOMETHING';
       pipe = new UpperCasePipe();
     });
 
-    describe("supports", () => {
-      it("should support strings", () => { expect(pipe.supports(str)).toBe(true); });
-
-      it("should not support other objects", () => {
-        expect(pipe.supports(new Object())).toBe(false);
-        expect(pipe.supports(null)).toBe(false);
-      });
-    });
-
     describe("transform", () => {
 
       it("should return uppercase", () => {
@@ -39,6 +28,8 @@ export function main() {
         expect(val2).toEqual('WAT');
       });
 
+      it("should not support other objects",
+         () => { expect(() => pipe.transform(new Object())).toThrowError(); });
     });
 
   });

modules/angular2/test/core/compiler/integration_spec.ts

@@ -35,7 +35,13 @@ import {
   CONST,
   CONST_EXPR
 } from 'angular2/src/facade/lang';
-import {PromiseWrapper, EventEmitter, ObservableWrapper} from 'angular2/src/facade/async';
+import {
+  PromiseWrapper,
+  EventEmitter,
+  ObservableWrapper,
+  PromiseCompleter,
+  Promise
+} from 'angular2/src/facade/async';
 
 import {
   Injector,
@@ -50,7 +56,6 @@ import {
   SkipSelfMetadata
 } from 'angular2/di';
 import {
-  PipeFactory,
   Pipes,
   defaultPipes,
   Pipe,
@@ -673,6 +678,34 @@ export function main() {
 
                          async.done();
                        })}));
+
+        if (DOM.supportsDOMEvents()) {
+          it('should be checked when an async pipe requests a check',
+             inject([TestComponentBuilder], fakeAsync((tcb: TestComponentBuilder) => {
+                      tcb = tcb.overrideView(MyComp, new viewAnn.View({
+                        template: '<push-cmp-with-async #cmp></push-cmp-with-async>',
+                        directives: [[[PushCmpWithAsyncPipe]]]
+                      }));
+
+                      var rootTC;
+                      tcb.createAsync(MyComp).then(root => { rootTC = root; });
+                      tick();
+
+                      var cmp = rootTC.componentViewChildren[0].getLocal('cmp');
+                      rootTC.detectChanges();
+                      expect(cmp.numberOfChecks).toEqual(1);
+
+                      rootTC.detectChanges();
+                      rootTC.detectChanges();
+                      expect(cmp.numberOfChecks).toEqual(1);
+
+                      cmp.resolve(2);
+                      tick();
+
+                      rootTC.detectChanges();
+                      expect(cmp.numberOfChecks).toEqual(2);
+                    })));
+        }
       });
 
       it('should create a component that injects an @Host',
@@ -1607,9 +1640,30 @@ class PushCmpWithRef {
   propagate() { this.ref.requestCheck(); }
 }
 
+@Component({selector: 'push-cmp-with-async', changeDetection: ON_PUSH})
+@View({template: '{{field | async}}'})
+@Injectable()
+class PushCmpWithAsyncPipe {
+  numberOfChecks: number = 0;
+  promise: Promise<any>;
+  completer: PromiseCompleter<any>;
+
+  constructor() {
+    this.completer = PromiseWrapper.completer();
+    this.promise = this.completer.promise;
+  }
+
+  get field() {
+    this.numberOfChecks++;
+    return this.promise;
+  }
+
+  resolve(value) { this.completer.resolve(value); }
+}
+
 @Injectable()
 class PipesWithDouble extends Pipes {
-  constructor() { super({"double": [new DoublePipeFactory()]}); }
+  constructor(injector: Injector) { super({"double": DoublePipe}, injector); }
 }
 
 @Component({
@@ -1703,19 +1757,9 @@ class SomeViewport {
 @Injectable()
 class DoublePipe implements Pipe {
   onDestroy() {}
-
-  supports(obj) { return true; }
-
   transform(value, args = null) { return `${value}${value}`; }
 }
 
-@Injectable()
-class DoublePipeFactory implements PipeFactory {
-  supports(obj) { return true; }
-
-  create(cdRef) { return new DoublePipe(); }
-}
-
 @Directive({selector: '[emitter]', events: ['event']})
 @Injectable()
 class DirectiveEmitingEvent {