be998e830b
This commit moves the `injectAttributeImpl` and other dependent code to avoid circular dependencies. PR Close #37085
86 lines
3.0 KiB
TypeScript
86 lines
3.0 KiB
TypeScript
/**
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* @license
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* Copyright Google LLC 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 {CompilerFacade, getCompilerFacade, R3DependencyMetadataFacade, R3ResolvedDependencyType} from '../../compiler/compiler_facade';
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import {Type} from '../../interface/type';
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import {ReflectionCapabilities} from '../../reflection/reflection_capabilities';
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import {Host, Inject, Optional, Self, SkipSelf} from '../metadata';
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import {Attribute} from '../metadata_attr';
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let _reflect: ReflectionCapabilities|null = null;
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export function getReflect(): ReflectionCapabilities {
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return (_reflect = _reflect || new ReflectionCapabilities());
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}
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export function reflectDependencies(type: Type<any>): R3DependencyMetadataFacade[] {
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return convertDependencies(getReflect().parameters(type));
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}
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export function convertDependencies(deps: any[]): R3DependencyMetadataFacade[] {
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const compiler = getCompilerFacade();
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return deps.map(dep => reflectDependency(compiler, dep));
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}
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function reflectDependency(compiler: CompilerFacade, dep: any|any[]): R3DependencyMetadataFacade {
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const meta: R3DependencyMetadataFacade = {
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token: null,
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host: false,
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optional: false,
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resolved: compiler.R3ResolvedDependencyType.Token,
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self: false,
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skipSelf: false,
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};
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function setTokenAndResolvedType(token: any): void {
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meta.resolved = compiler.R3ResolvedDependencyType.Token;
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meta.token = token;
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}
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if (Array.isArray(dep) && dep.length > 0) {
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for (let j = 0; j < dep.length; j++) {
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const param = dep[j];
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if (param === undefined) {
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// param may be undefined if type of dep is not set by ngtsc
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continue;
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}
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const proto = Object.getPrototypeOf(param);
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if (param instanceof Optional || proto.ngMetadataName === 'Optional') {
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meta.optional = true;
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} else if (param instanceof SkipSelf || proto.ngMetadataName === 'SkipSelf') {
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meta.skipSelf = true;
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} else if (param instanceof Self || proto.ngMetadataName === 'Self') {
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meta.self = true;
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} else if (param instanceof Host || proto.ngMetadataName === 'Host') {
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meta.host = true;
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} else if (param instanceof Inject) {
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meta.token = param.token;
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} else if (param instanceof Attribute) {
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if (param.attributeName === undefined) {
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throw new Error(`Attribute name must be defined.`);
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}
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meta.token = param.attributeName;
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meta.resolved = compiler.R3ResolvedDependencyType.Attribute;
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} else if (param.__ChangeDetectorRef__ === true) {
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meta.token = param;
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meta.resolved = compiler.R3ResolvedDependencyType.ChangeDetectorRef;
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} else {
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setTokenAndResolvedType(param);
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}
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}
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} else if (dep === undefined || (Array.isArray(dep) && dep.length === 0)) {
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meta.token = undefined;
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meta.resolved = R3ResolvedDependencyType.Invalid;
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} else {
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setTokenAndResolvedType(dep);
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}
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return meta;
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}
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