d62eff7316
Pipe defs are not considered public API, so the property
that contains them should be prefixed with Angular's marker
for "private" ('ɵ') to discourage apps from relying on def
APIs directly.
This commit adds the prefix and shortens the name from
ngPipeDef to pipe. This is because property names
cannot be minified by Uglify without turning on property
mangling (which most apps have turned off) and are thus
size-sensitive.
PR Close #33142
534 lines
21 KiB
TypeScript
534 lines
21 KiB
TypeScript
/**
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* @license
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* Copyright Google Inc. All Rights Reserved.
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*
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* Use of this source code is governed by an MIT-style license that can be
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* found in the LICENSE file at https://angular.io/license
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*/
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import {R3InjectorMetadataFacade, getCompilerFacade} from '../../compiler/compiler_facade';
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import {resolveForwardRef} from '../../di/forward_ref';
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import {NG_INJECTOR_DEF} from '../../di/interface/defs';
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import {reflectDependencies} from '../../di/jit/util';
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import {Type} from '../../interface/type';
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import {Component} from '../../metadata';
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import {ModuleWithProviders, NgModule, NgModuleDef, NgModuleTransitiveScopes} from '../../metadata/ng_module';
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import {deepForEach, flatten} from '../../util/array_utils';
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import {assertDefined} from '../../util/assert';
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import {getComponentDef, getDirectiveDef, getNgModuleDef, getPipeDef} from '../definition';
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import {NG_COMP_DEF, NG_DIR_DEF, NG_MODULE_DEF, NG_PIPE_DEF} from '../fields';
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import {ComponentDef} from '../interfaces/definition';
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import {NgModuleType} from '../ng_module_ref';
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import {maybeUnwrapFn, stringifyForError} from '../util/misc_utils';
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import {angularCoreEnv} from './environment';
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const EMPTY_ARRAY: Type<any>[] = [];
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interface ModuleQueueItem {
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moduleType: Type<any>;
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ngModule: NgModule;
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}
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const moduleQueue: ModuleQueueItem[] = [];
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/**
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* Enqueues moduleDef to be checked later to see if scope can be set on its
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* component declarations.
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*/
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function enqueueModuleForDelayedScoping(moduleType: Type<any>, ngModule: NgModule) {
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moduleQueue.push({moduleType, ngModule});
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}
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let flushingModuleQueue = false;
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/**
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* Loops over queued module definitions, if a given module definition has all of its
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* declarations resolved, it dequeues that module definition and sets the scope on
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* its declarations.
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*/
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export function flushModuleScopingQueueAsMuchAsPossible() {
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if (!flushingModuleQueue) {
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flushingModuleQueue = true;
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try {
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for (let i = moduleQueue.length - 1; i >= 0; i--) {
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const {moduleType, ngModule} = moduleQueue[i];
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if (ngModule.declarations && ngModule.declarations.every(isResolvedDeclaration)) {
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// dequeue
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moduleQueue.splice(i, 1);
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setScopeOnDeclaredComponents(moduleType, ngModule);
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}
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}
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} finally {
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flushingModuleQueue = false;
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}
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}
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}
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/**
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* Returns truthy if a declaration has resolved. If the declaration happens to be
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* an array of declarations, it will recurse to check each declaration in that array
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* (which may also be arrays).
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*/
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function isResolvedDeclaration(declaration: any[] | Type<any>): boolean {
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if (Array.isArray(declaration)) {
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return declaration.every(isResolvedDeclaration);
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}
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return !!resolveForwardRef(declaration);
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}
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/**
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* Compiles a module in JIT mode.
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*
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* This function automatically gets called when a class has a `@NgModule` decorator.
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*/
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export function compileNgModule(moduleType: Type<any>, ngModule: NgModule = {}): void {
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compileNgModuleDefs(moduleType as NgModuleType, ngModule);
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// Because we don't know if all declarations have resolved yet at the moment the
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// NgModule decorator is executing, we're enqueueing the setting of module scope
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// on its declarations to be run at a later time when all declarations for the module,
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// including forward refs, have resolved.
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enqueueModuleForDelayedScoping(moduleType, ngModule);
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}
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/**
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* Compiles and adds the `ngModuleDef` and `ngInjectorDef` properties to the module class.
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*
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* It's possible to compile a module via this API which will allow duplicate declarations in its
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* root.
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*/
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export function compileNgModuleDefs(
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moduleType: NgModuleType, ngModule: NgModule,
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allowDuplicateDeclarationsInRoot: boolean = false): void {
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ngDevMode && assertDefined(moduleType, 'Required value moduleType');
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ngDevMode && assertDefined(ngModule, 'Required value ngModule');
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const declarations: Type<any>[] = flatten(ngModule.declarations || EMPTY_ARRAY);
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let ngModuleDef: any = null;
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Object.defineProperty(moduleType, NG_MODULE_DEF, {
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configurable: true,
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get: () => {
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if (ngModuleDef === null) {
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if (ngDevMode && ngModule.imports && ngModule.imports.indexOf(moduleType) > -1) {
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// We need to assert this immediately, because allowing it to continue will cause it to
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// go into an infinite loop before we've reached the point where we throw all the errors.
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throw new Error(`'${stringifyForError(moduleType)}' module can't import itself`);
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}
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ngModuleDef = getCompilerFacade().compileNgModule(
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angularCoreEnv, `ng:///${moduleType.name}/ngModuleDef.js`, {
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type: moduleType,
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bootstrap: flatten(ngModule.bootstrap || EMPTY_ARRAY).map(resolveForwardRef),
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declarations: declarations.map(resolveForwardRef),
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imports: flatten(ngModule.imports || EMPTY_ARRAY)
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.map(resolveForwardRef)
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.map(expandModuleWithProviders),
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exports: flatten(ngModule.exports || EMPTY_ARRAY)
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.map(resolveForwardRef)
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.map(expandModuleWithProviders),
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emitInline: true,
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schemas: ngModule.schemas ? flatten(ngModule.schemas) : null,
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id: ngModule.id || null,
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});
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}
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return ngModuleDef;
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}
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});
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let ngInjectorDef: any = null;
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Object.defineProperty(moduleType, NG_INJECTOR_DEF, {
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get: () => {
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if (ngInjectorDef === null) {
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ngDevMode && verifySemanticsOfNgModuleDef(
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moduleType as any as NgModuleType, allowDuplicateDeclarationsInRoot);
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const meta: R3InjectorMetadataFacade = {
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name: moduleType.name,
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type: moduleType,
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deps: reflectDependencies(moduleType),
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providers: ngModule.providers || EMPTY_ARRAY,
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imports: [
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(ngModule.imports || EMPTY_ARRAY).map(resolveForwardRef),
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(ngModule.exports || EMPTY_ARRAY).map(resolveForwardRef),
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],
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};
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ngInjectorDef = getCompilerFacade().compileInjector(
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angularCoreEnv, `ng:///${moduleType.name}/ngInjectorDef.js`, meta);
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}
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return ngInjectorDef;
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},
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// Make the property configurable in dev mode to allow overriding in tests
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configurable: !!ngDevMode,
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});
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}
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function verifySemanticsOfNgModuleDef(
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moduleType: NgModuleType, allowDuplicateDeclarationsInRoot: boolean,
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importingModule?: NgModuleType): void {
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if (verifiedNgModule.get(moduleType)) return;
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verifiedNgModule.set(moduleType, true);
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moduleType = resolveForwardRef(moduleType);
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let ngModuleDef: NgModuleDef<any>;
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if (importingModule) {
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ngModuleDef = getNgModuleDef(moduleType) !;
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if (!ngModuleDef) {
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throw new Error(
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`Unexpected value '${moduleType.name}' imported by the module '${importingModule.name}'. Please add an @NgModule annotation.`);
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}
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} else {
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ngModuleDef = getNgModuleDef(moduleType, true);
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}
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const errors: string[] = [];
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const declarations = maybeUnwrapFn(ngModuleDef.declarations);
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const imports = maybeUnwrapFn(ngModuleDef.imports);
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flatten(imports).map(unwrapModuleWithProvidersImports).forEach(mod => {
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verifySemanticsOfNgModuleImport(mod, moduleType);
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verifySemanticsOfNgModuleDef(mod, false, moduleType);
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});
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const exports = maybeUnwrapFn(ngModuleDef.exports);
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declarations.forEach(verifyDeclarationsHaveDefinitions);
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declarations.forEach(verifyDirectivesHaveSelector);
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const combinedDeclarations: Type<any>[] = [
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...declarations.map(resolveForwardRef),
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...flatten(imports.map(computeCombinedExports)).map(resolveForwardRef),
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];
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exports.forEach(verifyExportsAreDeclaredOrReExported);
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declarations.forEach(decl => verifyDeclarationIsUnique(decl, allowDuplicateDeclarationsInRoot));
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declarations.forEach(verifyComponentEntryComponentsIsPartOfNgModule);
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const ngModule = getAnnotation<NgModule>(moduleType, 'NgModule');
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if (ngModule) {
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ngModule.imports &&
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flatten(ngModule.imports).map(unwrapModuleWithProvidersImports).forEach(mod => {
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verifySemanticsOfNgModuleImport(mod, moduleType);
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verifySemanticsOfNgModuleDef(mod, false, moduleType);
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});
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ngModule.bootstrap && deepForEach(ngModule.bootstrap, verifyCorrectBootstrapType);
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ngModule.bootstrap && deepForEach(ngModule.bootstrap, verifyComponentIsPartOfNgModule);
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ngModule.entryComponents &&
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deepForEach(ngModule.entryComponents, verifyComponentIsPartOfNgModule);
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}
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// Throw Error if any errors were detected.
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if (errors.length) {
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throw new Error(errors.join('\n'));
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}
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////////////////////////////////////////////////////////////////////////////////////////////////
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function verifyDeclarationsHaveDefinitions(type: Type<any>): void {
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type = resolveForwardRef(type);
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const def = getComponentDef(type) || getDirectiveDef(type) || getPipeDef(type);
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if (!def) {
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errors.push(
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`Unexpected value '${stringifyForError(type)}' declared by the module '${stringifyForError(moduleType)}'. Please add a @Pipe/@Directive/@Component annotation.`);
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}
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}
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function verifyDirectivesHaveSelector(type: Type<any>): void {
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type = resolveForwardRef(type);
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const def = getDirectiveDef(type);
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if (!getComponentDef(type) && def && def.selectors.length == 0) {
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errors.push(`Directive ${stringifyForError(type)} has no selector, please add it!`);
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}
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}
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function verifyExportsAreDeclaredOrReExported(type: Type<any>) {
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type = resolveForwardRef(type);
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const kind = getComponentDef(type) && 'component' || getDirectiveDef(type) && 'directive' ||
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getPipeDef(type) && 'pipe';
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if (kind) {
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// only checked if we are declared as Component, Directive, or Pipe
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// Modules don't need to be declared or imported.
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if (combinedDeclarations.lastIndexOf(type) === -1) {
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// We are exporting something which we don't explicitly declare or import.
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errors.push(
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`Can't export ${kind} ${stringifyForError(type)} from ${stringifyForError(moduleType)} as it was neither declared nor imported!`);
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}
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}
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}
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function verifyDeclarationIsUnique(type: Type<any>, suppressErrors: boolean) {
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type = resolveForwardRef(type);
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const existingModule = ownerNgModule.get(type);
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if (existingModule && existingModule !== moduleType) {
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if (!suppressErrors) {
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const modules = [existingModule, moduleType].map(stringifyForError).sort();
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errors.push(
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`Type ${stringifyForError(type)} is part of the declarations of 2 modules: ${modules[0]} and ${modules[1]}! ` +
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`Please consider moving ${stringifyForError(type)} to a higher module that imports ${modules[0]} and ${modules[1]}. ` +
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`You can also create a new NgModule that exports and includes ${stringifyForError(type)} then import that NgModule in ${modules[0]} and ${modules[1]}.`);
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}
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} else {
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// Mark type as having owner.
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ownerNgModule.set(type, moduleType);
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}
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}
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function verifyComponentIsPartOfNgModule(type: Type<any>) {
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type = resolveForwardRef(type);
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const existingModule = ownerNgModule.get(type);
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if (!existingModule) {
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errors.push(
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`Component ${stringifyForError(type)} is not part of any NgModule or the module has not been imported into your module.`);
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}
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}
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function verifyCorrectBootstrapType(type: Type<any>) {
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type = resolveForwardRef(type);
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if (!getComponentDef(type)) {
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errors.push(`${stringifyForError(type)} cannot be used as an entry component.`);
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}
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}
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function verifyComponentEntryComponentsIsPartOfNgModule(type: Type<any>) {
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type = resolveForwardRef(type);
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if (getComponentDef(type)) {
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// We know we are component
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const component = getAnnotation<Component>(type, 'Component');
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if (component && component.entryComponents) {
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deepForEach(component.entryComponents, verifyComponentIsPartOfNgModule);
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}
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}
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}
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function verifySemanticsOfNgModuleImport(type: Type<any>, importingModule: Type<any>) {
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type = resolveForwardRef(type);
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if (getComponentDef(type) || getDirectiveDef(type)) {
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throw new Error(
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`Unexpected directive '${type.name}' imported by the module '${importingModule.name}'. Please add an @NgModule annotation.`);
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}
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if (getPipeDef(type)) {
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throw new Error(
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`Unexpected pipe '${type.name}' imported by the module '${importingModule.name}'. Please add an @NgModule annotation.`);
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}
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}
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}
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function unwrapModuleWithProvidersImports(
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typeOrWithProviders: NgModuleType<any>| {ngModule: NgModuleType<any>}): NgModuleType<any> {
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typeOrWithProviders = resolveForwardRef(typeOrWithProviders);
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return (typeOrWithProviders as any).ngModule || typeOrWithProviders;
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}
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function getAnnotation<T>(type: any, name: string): T|null {
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let annotation: T|null = null;
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collect(type.__annotations__);
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collect(type.decorators);
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return annotation;
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function collect(annotations: any[] | null) {
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if (annotations) {
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annotations.forEach(readAnnotation);
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}
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}
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function readAnnotation(
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decorator: {type: {prototype: {ngMetadataName: string}, args: any[]}, args: any}): void {
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if (!annotation) {
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const proto = Object.getPrototypeOf(decorator);
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if (proto.ngMetadataName == name) {
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annotation = decorator as any;
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} else if (decorator.type) {
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const proto = Object.getPrototypeOf(decorator.type);
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if (proto.ngMetadataName == name) {
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annotation = decorator.args[0];
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}
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}
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}
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}
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}
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/**
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* Keep track of compiled components. This is needed because in tests we often want to compile the
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* same component with more than one NgModule. This would cause an error unless we reset which
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* NgModule the component belongs to. We keep the list of compiled components here so that the
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* TestBed can reset it later.
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*/
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let ownerNgModule = new Map<Type<any>, NgModuleType<any>>();
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let verifiedNgModule = new Map<NgModuleType<any>, boolean>();
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export function resetCompiledComponents(): void {
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ownerNgModule = new Map<Type<any>, NgModuleType<any>>();
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verifiedNgModule = new Map<NgModuleType<any>, boolean>();
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moduleQueue.length = 0;
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}
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/**
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* Computes the combined declarations of explicit declarations, as well as declarations inherited by
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* traversing the exports of imported modules.
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* @param type
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*/
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function computeCombinedExports(type: Type<any>): Type<any>[] {
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type = resolveForwardRef(type);
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const ngModuleDef = getNgModuleDef(type, true);
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return [...flatten(maybeUnwrapFn(ngModuleDef.exports).map((type) => {
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const ngModuleDef = getNgModuleDef(type);
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if (ngModuleDef) {
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verifySemanticsOfNgModuleDef(type as any as NgModuleType, false);
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return computeCombinedExports(type);
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} else {
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return type;
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}
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}))];
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}
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/**
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* Some declared components may be compiled asynchronously, and thus may not have their
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* ɵcmp set yet. If this is the case, then a reference to the module is written into
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* the `ngSelectorScope` property of the declared type.
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*/
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function setScopeOnDeclaredComponents(moduleType: Type<any>, ngModule: NgModule) {
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const declarations: Type<any>[] = flatten(ngModule.declarations || EMPTY_ARRAY);
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const transitiveScopes = transitiveScopesFor(moduleType);
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declarations.forEach(declaration => {
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if (declaration.hasOwnProperty(NG_COMP_DEF)) {
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// A `ɵcmp` field exists - go ahead and patch the component directly.
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const component = declaration as Type<any>& {ɵcmp: ComponentDef<any>};
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const componentDef = getComponentDef(component) !;
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patchComponentDefWithScope(componentDef, transitiveScopes);
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} else if (
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!declaration.hasOwnProperty(NG_DIR_DEF) && !declaration.hasOwnProperty(NG_PIPE_DEF)) {
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// Set `ngSelectorScope` for future reference when the component compilation finishes.
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(declaration as Type<any>& {ngSelectorScope?: any}).ngSelectorScope = moduleType;
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}
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});
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}
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/**
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* Patch the definition of a component with directives and pipes from the compilation scope of
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* a given module.
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*/
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export function patchComponentDefWithScope<C>(
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componentDef: ComponentDef<C>, transitiveScopes: NgModuleTransitiveScopes) {
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componentDef.directiveDefs = () =>
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Array.from(transitiveScopes.compilation.directives)
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.map(
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dir =>
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dir.hasOwnProperty(NG_COMP_DEF) ? getComponentDef(dir) ! : getDirectiveDef(dir) !)
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.filter(def => !!def);
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componentDef.pipeDefs = () =>
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Array.from(transitiveScopes.compilation.pipes).map(pipe => getPipeDef(pipe) !);
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componentDef.schemas = transitiveScopes.schemas;
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// Since we avoid Components/Directives/Pipes recompiling in case there are no overrides, we
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// may face a problem where previously compiled defs available to a given Component/Directive
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// are cached in TView and may become stale (in case any of these defs gets recompiled). In
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// order to avoid this problem, we force fresh TView to be created.
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componentDef.tView = null;
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}
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|
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/**
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* Compute the pair of transitive scopes (compilation scope and exported scope) for a given module.
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*
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* This operation is memoized and the result is cached on the module's definition. It can be called
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* on modules with components that have not fully compiled yet, but the result should not be used
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* until they have.
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*/
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export function transitiveScopesFor<T>(
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moduleType: Type<T>,
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processNgModuleFn?: (ngModule: NgModuleType) => void): NgModuleTransitiveScopes {
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if (!isNgModule(moduleType)) {
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throw new Error(`${moduleType.name} does not have an ngModuleDef`);
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}
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const def = getNgModuleDef(moduleType) !;
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|
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if (def.transitiveCompileScopes !== null) {
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return def.transitiveCompileScopes;
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}
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const scopes: NgModuleTransitiveScopes = {
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schemas: def.schemas || null,
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compilation: {
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directives: new Set<any>(),
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pipes: new Set<any>(),
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},
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exported: {
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directives: new Set<any>(),
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pipes: new Set<any>(),
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},
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};
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maybeUnwrapFn(def.declarations).forEach(declared => {
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const declaredWithDefs = declared as Type<any>& { ɵpipe?: any; };
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|
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if (getPipeDef(declaredWithDefs)) {
|
|
scopes.compilation.pipes.add(declared);
|
|
} else {
|
|
// Either declared has a ɵcmp or ɵdir, or it's a component which hasn't
|
|
// had its template compiled yet. In either case, it gets added to the compilation's
|
|
// directives.
|
|
scopes.compilation.directives.add(declared);
|
|
}
|
|
});
|
|
|
|
maybeUnwrapFn(def.imports).forEach(<I>(imported: Type<I>) => {
|
|
const importedType = imported as Type<I>& {
|
|
// If imported is an @NgModule:
|
|
ngModuleDef?: NgModuleDef<I>;
|
|
};
|
|
|
|
if (!isNgModule<I>(importedType)) {
|
|
throw new Error(`Importing ${importedType.name} which does not have an ngModuleDef`);
|
|
}
|
|
|
|
if (processNgModuleFn) {
|
|
processNgModuleFn(importedType as NgModuleType);
|
|
}
|
|
|
|
// When this module imports another, the imported module's exported directives and pipes are
|
|
// added to the compilation scope of this module.
|
|
const importedScope = transitiveScopesFor(importedType, processNgModuleFn);
|
|
importedScope.exported.directives.forEach(entry => scopes.compilation.directives.add(entry));
|
|
importedScope.exported.pipes.forEach(entry => scopes.compilation.pipes.add(entry));
|
|
});
|
|
|
|
maybeUnwrapFn(def.exports).forEach(<E>(exported: Type<E>) => {
|
|
const exportedType = exported as Type<E>& {
|
|
// Components, Directives, NgModules, and Pipes can all be exported.
|
|
ɵcmp?: any;
|
|
ɵdir?: any;
|
|
ngModuleDef?: NgModuleDef<E>;
|
|
ɵpipe?: any;
|
|
};
|
|
|
|
// Either the type is a module, a pipe, or a component/directive (which may not have a
|
|
// ɵcmp as it might be compiled asynchronously).
|
|
if (isNgModule(exportedType)) {
|
|
// When this module exports another, the exported module's exported directives and pipes are
|
|
// added to both the compilation and exported scopes of this module.
|
|
const exportedScope = transitiveScopesFor(exportedType, processNgModuleFn);
|
|
exportedScope.exported.directives.forEach(entry => {
|
|
scopes.compilation.directives.add(entry);
|
|
scopes.exported.directives.add(entry);
|
|
});
|
|
exportedScope.exported.pipes.forEach(entry => {
|
|
scopes.compilation.pipes.add(entry);
|
|
scopes.exported.pipes.add(entry);
|
|
});
|
|
} else if (getPipeDef(exportedType)) {
|
|
scopes.exported.pipes.add(exportedType);
|
|
} else {
|
|
scopes.exported.directives.add(exportedType);
|
|
}
|
|
});
|
|
|
|
def.transitiveCompileScopes = scopes;
|
|
return scopes;
|
|
}
|
|
|
|
function expandModuleWithProviders(value: Type<any>| ModuleWithProviders<{}>): Type<any> {
|
|
if (isModuleWithProviders(value)) {
|
|
return value.ngModule;
|
|
}
|
|
return value;
|
|
}
|
|
|
|
function isModuleWithProviders(value: any): value is ModuleWithProviders<{}> {
|
|
return (value as{ngModule?: any}).ngModule !== undefined;
|
|
}
|
|
|
|
function isNgModule<T>(value: Type<T>): value is Type<T>&{ngModuleDef: NgModuleDef<T>} {
|
|
return !!getNgModuleDef(value);
|
|
}
|