refactor(compiler): remove `asset:` urls

These urls were just relicts from Dart.

modules/@angular/compiler-cli/src/ng_host.ts

@@ -6,7 +6,7 @@
  * found in the LICENSE file at https://angular.io/license
  */
 
-import {AotCompilerHost, AssetUrl, StaticSymbol} from '@angular/compiler';
+import {AotCompilerHost, StaticSymbol} from '@angular/compiler';
 import {AngularCompilerOptions, MetadataCollector, ModuleMetadata} from '@angular/tsc-wrapped';
 import * as fs from 'fs';
 import * as path from 'path';
@@ -60,20 +60,6 @@ export class NgHost implements AotCompilerHost {
     return resolved ? resolved.resolvedFileName : null;
   };
 
-  protected normalizeAssetUrl(url: string): string {
-    const assetUrl = AssetUrl.parse(url);
-    const path = assetUrl ? `${assetUrl.packageName}/${assetUrl.modulePath}` : null;
-    return this.getCanonicalFileName(path);
-  }
-
-  protected resolveAssetUrl(url: string, containingFile: string): string {
-    const assetUrl = this.normalizeAssetUrl(url);
-    if (assetUrl) {
-      return this.getCanonicalFileName(this.resolveImportToFile(assetUrl, containingFile));
-    }
-    return url;
-  }
-
   /**
    * We want a moduleId that will appear in import statements in the generated code.
    * These need to be in a form that system.js can load, so absolute file paths don't work.
@@ -90,9 +76,6 @@ export class NgHost implements AotCompilerHost {
    * NOTE: (*) the relative path is computed depending on `isGenDirChildOfRootDir`.
    */
   getImportPath(containingFile: string, importedFile: string): string {
-    importedFile = this.resolveAssetUrl(importedFile, containingFile);
-    containingFile = this.resolveAssetUrl(containingFile, '');
-
     // If a file does not yet exist (because we compile it later), we still need to
     // assume it exists it so that the `resolve` method works!
     if (!this.compilerHost.fileExists(importedFile)) {

modules/@angular/compiler-cli/src/path_mapped_ng_host.ts

@@ -70,9 +70,6 @@ export class PathMappedNgHost extends NgHost {
    * they are resolvable by the moduleResolution strategy from the CompilerHost.
    */
   getImportPath(containingFile: string, importedFile: string): string {
-    importedFile = this.resolveAssetUrl(importedFile, containingFile);
-    containingFile = this.resolveAssetUrl(containingFile, '');
-
     if (this.options.traceResolution) {
       console.log(
           'getImportPath from containingFile', containingFile, 'to importedFile', importedFile);

modules/@angular/compiler/src/aot/static_reflector.ts

@@ -7,7 +7,6 @@
  */
 
 import {Attribute, Component, ContentChild, ContentChildren, Directive, Host, HostBinding, HostListener, Inject, Injectable, Input, NgModule, Optional, Output, Pipe, Self, SkipSelf, ViewChild, ViewChildren, animate, group, keyframes, sequence, state, style, transition, trigger} from '@angular/core';
-import {AssetUrl} from '../output/path_util';
 import {ReflectorReader} from '../private_import_core';
 import {AotCompilerHost} from './compiler_host';
 import {StaticSymbol} from './static_symbol';
@@ -213,11 +212,6 @@ export class StaticReflector implements ReflectorReader {
     return result;
   }
 
-  private normalizeAssetUrl(url: string): string {
-    const assetUrl = AssetUrl.parse(url);
-    return assetUrl ? `${assetUrl.packageName}@${assetUrl.modulePath}` : null;
-  }
-
   private resolveExportedSymbol(filePath: string, symbolName: string): StaticSymbol {
     const resolveModule = (moduleName: string): string => {
       const resolvedModulePath = this.host.resolveImportToFile(moduleName, filePath);
@@ -275,10 +269,6 @@ export class StaticReflector implements ReflectorReader {
       return symbol;
     }
     try {
-      const assetUrl = this.normalizeAssetUrl(module);
-      if (assetUrl) {
-        module = assetUrl;
-      }
       const filePath = this.host.resolveImportToFile(module, containingFile);
 
       if (!filePath) {

modules/@angular/compiler/src/identifiers.ts

@@ -8,6 +8,7 @@
 
 import {ANALYZE_FOR_ENTRY_COMPONENTS, AnimationTransitionEvent, ChangeDetectionStrategy, ChangeDetectorRef, ComponentFactory, ComponentFactoryResolver, ComponentRef, ElementRef, Injector, LOCALE_ID, NgModuleFactory, QueryList, RenderComponentType, Renderer, SecurityContext, SimpleChange, TRANSLATIONS_FORMAT, TemplateRef, ViewContainerRef, ViewEncapsulation} from '@angular/core';
 
+import {StaticSymbol, isStaticSymbol} from './aot/static_symbol';
 import {CompileIdentifierMetadata, CompileTokenMetadata} from './compile_metadata';
 import {AnimationGroupPlayer, AnimationKeyframe, AnimationSequencePlayer, AnimationStyles, AnimationTransition, AppView, ChangeDetectorStatus, CodegenComponentFactoryResolver, ComponentRef_, DebugAppView, DebugContext, NgModuleInjector, NoOpAnimationPlayer, StaticNodeDebugInfo, TemplateRef_, UNINITIALIZED, ValueUnwrapper, ViewContainer, ViewType, balanceAnimationKeyframes, clearStyles, collectAndResolveStyles, devModeEqual, prepareFinalAnimationStyles, reflector, registerModuleFactory, renderStyles, view_utils} from './private_import_core';
 
@@ -339,19 +340,21 @@ export class Identifiers {
 
 export function assetUrl(pkg: string, path: string = null, type: string = 'src'): string {
   if (path == null) {
-    return `asset:@angular/lib/${pkg}/index`;
+    return `@angular/${pkg}/index`;
   } else {
-    return `asset:@angular/lib/${pkg}/src/${path}`;
+    return `@angular/${pkg}/${type}/${path}`;
   }
 }
 
 export function resolveIdentifier(identifier: IdentifierSpec) {
-  return new CompileIdentifierMetadata({
-    name: identifier.name,
-    moduleUrl: identifier.moduleUrl,
-    reference:
-        reflector.resolveIdentifier(identifier.name, identifier.moduleUrl, identifier.runtime)
-  });
+  let moduleUrl = identifier.moduleUrl;
+  const reference =
+      reflector.resolveIdentifier(identifier.name, identifier.moduleUrl, identifier.runtime);
+  if (isStaticSymbol(reference)) {
+    moduleUrl = reference.filePath;
+  }
+  return new CompileIdentifierMetadata(
+      {name: identifier.name, moduleUrl: moduleUrl, reference: reference});
 }
 
 export function identifierToken(identifier: CompileIdentifierMetadata): CompileTokenMetadata {

modules/@angular/compiler/src/output/path_util.ts

@@ -6,30 +6,9 @@
  * found in the LICENSE file at https://angular.io/license
  */
 
-// asset:<package-name>/<realm>/<path-to-module>
-const _ASSET_URL_RE = /asset:([^\/]+)\/([^\/]+)\/(.+)/;
-
 /**
  * Interface that defines how import statements should be generated.
  */
 export abstract class ImportGenerator {
-  static parseAssetUrl(url: string): AssetUrl { return AssetUrl.parse(url); }
-
   abstract getImportPath(moduleUrlStr: string, importedUrlStr: string): string;
 }
-
-export class AssetUrl {
-  static parse(url: string, allowNonMatching: boolean = true): AssetUrl {
-    const match = url.match(_ASSET_URL_RE);
-    if (match !== null) {
-      return new AssetUrl(match[1], match[2], match[3]);
-    }
-    if (allowNonMatching) {
-      return null;
-    }
-    throw new Error(`Url ${url} is not a valid asset: url`);
-  }
-
-  constructor(public packageName: string, public firstLevelDir: string, public modulePath: string) {
-  }
-}

modules/@angular/compiler/src/output/ts_emitter.ts

@@ -14,7 +14,7 @@ import {AbstractEmitterVisitor, CATCH_ERROR_VAR, CATCH_STACK_VAR, EmitterVisitor
 import * as o from './output_ast';
 import {ImportGenerator} from './path_util';
 
-const _debugModuleUrl = 'asset://debug/lib';
+const _debugModuleUrl = '/debug/lib';
 
 export function debugOutputAstAsTypeScript(ast: o.Statement | o.Expression | o.Type | any[]):
     string {

modules/@angular/compiler/src/url_resolver.ts

@@ -10,9 +10,6 @@ import {Inject, Injectable, PACKAGE_ROOT_URL} from '@angular/core';
 
 import {isBlank, isPresent} from './facade/lang';
 
-
-const _ASSET_SCHEME = 'asset:';
-
 /**
  * Create a {@link UrlResolver} with no package prefix.
  */
@@ -21,7 +18,7 @@ export function createUrlResolverWithoutPackagePrefix(): UrlResolver {
 }
 
 export function createOfflineCompileUrlResolver(): UrlResolver {
-  return new UrlResolver(_ASSET_SCHEME);
+  return new UrlResolver('.');
 }
 
 /**
@@ -70,14 +67,9 @@ export class UrlResolver {
     if (isPresent(prefix) && isPresent(resolvedParts) &&
         resolvedParts[_ComponentIndex.Scheme] == 'package') {
       let path = resolvedParts[_ComponentIndex.Path];
-      if (this._packagePrefix === _ASSET_SCHEME) {
-        const pathSegements = path.split(/\//);
-        resolvedUrl = `asset:${pathSegements[0]}/lib/${pathSegements.slice(1).join('/')}`;
-      } else {
-        prefix = prefix.replace(/\/+$/, '');
-        path = path.replace(/^\/+/, '');
-        return `${prefix}/${path}`;
-      }
+      prefix = prefix.replace(/\/+$/, '');
+      path = path.replace(/^\/+/, '');
+      return `${prefix}/${path}`;
     }
     return resolvedUrl;
   }

modules/@angular/compiler/test/output/js_emitter_spec.ts

@@ -13,8 +13,8 @@ import {beforeEach, describe, expect, it} from '@angular/core/testing/testing_in
 
 import {SimpleJsImportGenerator} from './output_emitter_util';
 
-const someModuleUrl = 'asset:somePackage/lib/somePath';
-const anotherModuleUrl = 'asset:somePackage/lib/someOtherPath';
+const someModuleUrl = 'somePackage/somePath';
+const anotherModuleUrl = 'somePackage/someOtherPath';
 
 const sameModuleIdentifier =
     new CompileIdentifierMetadata({name: 'someLocalId', moduleUrl: someModuleUrl});

modules/@angular/compiler/test/output/output_emitter_util.ts

@@ -22,7 +22,7 @@ export class ExternalClass {
 
 const testDataIdentifier = new CompileIdentifierMetadata({
   name: 'ExternalClass',
-  moduleUrl: `asset:@angular/lib/compiler/test/output/output_emitter_util`,
+  moduleUrl: `@angular/compiler/test/output/output_emitter_util`,
   reference: ExternalClass
 });
 
@@ -253,12 +253,5 @@ function createOperatorFn(op: o.BinaryOperator) {
 }
 
 export class SimpleJsImportGenerator implements ImportGenerator {
-  getImportPath(moduleUrlStr: string, importedUrlStr: string): string {
-    const importedAssetUrl = ImportGenerator.parseAssetUrl(importedUrlStr);
-    if (importedAssetUrl) {
-      return `${importedAssetUrl.packageName}/${importedAssetUrl.modulePath}`;
-    } else {
-      return importedUrlStr;
-    }
-  }
+  getImportPath(moduleUrlStr: string, importedUrlStr: string): string { return importedUrlStr; }
 }

modules/@angular/compiler/test/output/ts_emitter_spec.ts

@@ -13,8 +13,8 @@ import {beforeEach, describe, expect, it} from '@angular/core/testing/testing_in
 
 import {SimpleJsImportGenerator} from './output_emitter_util';
 
-const someModuleUrl = 'asset:somePackage/lib/somePath';
-const anotherModuleUrl = 'asset:somePackage/lib/someOtherPath';
+const someModuleUrl = 'somePackage/somePath';
+const anotherModuleUrl = 'somePackage/someOtherPath';
 
 const sameModuleIdentifier =
     new CompileIdentifierMetadata({name: 'someLocalId', moduleUrl: someModuleUrl});

modules/@angular/compiler/test/style_url_resolver_spec.ts

@@ -91,9 +91,6 @@ export function main() {
     it('should resolve package: urls',
        () => { expect(isStyleUrlResolvable('package:someUrl.css')).toBe(true); });
 
-    it('should resolve asset: urls',
-       () => { expect(isStyleUrlResolvable('asset:someUrl.css')).toBe(true); });
-
     it('should not resolve empty urls', () => {
       expect(isStyleUrlResolvable(null)).toBe(false);
       expect(isStyleUrlResolvable('')).toBe(false);

modules/@angular/compiler/test/url_resolver_spec.ts

@@ -106,16 +106,6 @@ export function main() {
       });
     });
 
-    describe('asset urls', () => {
-      let resolver: UrlResolver;
-      beforeEach(() => { resolver = createOfflineCompileUrlResolver(); });
-
-      it('should resolve package: urls into asset: urls', () => {
-        expect(resolver.resolve(null, 'package:somePkg/somePath'))
-            .toEqual('asset:somePkg/lib/somePath');
-      });
-    });
-
     describe('corner and error cases', () => {
       it('should encode URLs before resolving',
          () => {