@angular/core
Version:
Angular - the core framework
123 lines • 13.2 kB
JavaScript
/**
* @license
* Copyright Google Inc. All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
import * as tslib_1 from "tslib";
import { Component, Directive, NgModule, Pipe, ɵReflectionCapabilities as ReflectionCapabilities } from '@angular/core';
import { MetadataOverrider } from './metadata_overrider';
var reflection = new ReflectionCapabilities();
/**
* Allows to override ivy metadata for tests (via the `TestBed`).
*/
var OverrideResolver = /** @class */ (function () {
function OverrideResolver() {
this.overrides = new Map();
this.resolved = new Map();
}
OverrideResolver.prototype.addOverride = function (type, override) {
var overrides = this.overrides.get(type) || [];
overrides.push(override);
this.overrides.set(type, overrides);
this.resolved.delete(type);
};
OverrideResolver.prototype.setOverrides = function (overrides) {
var _this = this;
this.overrides.clear();
overrides.forEach(function (_a) {
var _b = tslib_1.__read(_a, 2), type = _b[0], override = _b[1];
_this.addOverride(type, override);
});
};
OverrideResolver.prototype.getAnnotation = function (type) {
var annotations = reflection.annotations(type);
// Try to find the nearest known Type annotation and make sure that this annotation is an
// instance of the type we are looking for, so we can use it for resolution. Note: there might
// be multiple known annotations found due to the fact that Components can extend Directives (so
// both Directive and Component annotations would be present), so we always check if the known
// annotation has the right type.
for (var i = annotations.length - 1; i >= 0; i--) {
var annotation = annotations[i];
var isKnownType = annotation instanceof Directive || annotation instanceof Component ||
annotation instanceof Pipe || annotation instanceof NgModule;
if (isKnownType) {
return annotation instanceof this.type ? annotation : null;
}
}
return null;
};
OverrideResolver.prototype.resolve = function (type) {
var _this = this;
var resolved = this.resolved.get(type) || null;
if (!resolved) {
resolved = this.getAnnotation(type);
if (resolved) {
var overrides = this.overrides.get(type);
if (overrides) {
var overrider_1 = new MetadataOverrider();
overrides.forEach(function (override) {
resolved = overrider_1.overrideMetadata(_this.type, resolved, override);
});
}
}
this.resolved.set(type, resolved);
}
return resolved;
};
return OverrideResolver;
}());
var DirectiveResolver = /** @class */ (function (_super) {
tslib_1.__extends(DirectiveResolver, _super);
function DirectiveResolver() {
return _super !== null && _super.apply(this, arguments) || this;
}
Object.defineProperty(DirectiveResolver.prototype, "type", {
get: function () { return Directive; },
enumerable: true,
configurable: true
});
return DirectiveResolver;
}(OverrideResolver));
export { DirectiveResolver };
var ComponentResolver = /** @class */ (function (_super) {
tslib_1.__extends(ComponentResolver, _super);
function ComponentResolver() {
return _super !== null && _super.apply(this, arguments) || this;
}
Object.defineProperty(ComponentResolver.prototype, "type", {
get: function () { return Component; },
enumerable: true,
configurable: true
});
return ComponentResolver;
}(OverrideResolver));
export { ComponentResolver };
var PipeResolver = /** @class */ (function (_super) {
tslib_1.__extends(PipeResolver, _super);
function PipeResolver() {
return _super !== null && _super.apply(this, arguments) || this;
}
Object.defineProperty(PipeResolver.prototype, "type", {
get: function () { return Pipe; },
enumerable: true,
configurable: true
});
return PipeResolver;
}(OverrideResolver));
export { PipeResolver };
var NgModuleResolver = /** @class */ (function (_super) {
tslib_1.__extends(NgModuleResolver, _super);
function NgModuleResolver() {
return _super !== null && _super.apply(this, arguments) || this;
}
Object.defineProperty(NgModuleResolver.prototype, "type", {
get: function () { return NgModule; },
enumerable: true,
configurable: true
});
return NgModuleResolver;
}(OverrideResolver));
export { NgModuleResolver };
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All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nimport {Component, Directive, NgModule, Pipe, Type, ɵReflectionCapabilities as ReflectionCapabilities} from '@angular/core';\n\nimport {MetadataOverride} from './metadata_override';\nimport {MetadataOverrider} from './metadata_overrider';\n\nconst reflection = new ReflectionCapabilities();\n\n/**\n * Base interface to resolve `@Component`, `@Directive`, `@Pipe` and `@NgModule`.\n */\nexport interface Resolver<T> {\n  addOverride(type: Type<any>, override: MetadataOverride<T>): void;\n  setOverrides(overrides: Array<[Type<any>, MetadataOverride<T>]>): void;\n  resolve(type: Type<any>): T|null;\n}\n\n/**\n * Allows to override ivy metadata for tests (via the `TestBed`).\n */\nabstract class OverrideResolver<T> implements Resolver<T> {\n  private overrides = new Map<Type<any>, MetadataOverride<T>[]>();\n  private resolved = new Map<Type<any>, T|null>();\n\n  abstract get type(): any;\n\n  addOverride(type: Type<any>, override: MetadataOverride<T>) {\n    const overrides = this.overrides.get(type) || [];\n    overrides.push(override);\n    this.overrides.set(type, overrides);\n    this.resolved.delete(type);\n  }\n\n  setOverrides(overrides: Array<[Type<any>, MetadataOverride<T>]>) {\n    this.overrides.clear();\n    overrides.forEach(([type, override]) => { this.addOverride(type, override); });\n  }\n\n  getAnnotation(type: Type<any>): T|null {\n    const annotations = reflection.annotations(type);\n    // Try to find the nearest known Type annotation and make sure that this annotation is an\n    // instance of the type we are looking for, so we can use it for resolution. Note: there might\n    // be multiple known annotations found due to the fact that Components can extend Directives (so\n    // both Directive and Component annotations would be present), so we always check if the known\n    // annotation has the right type.\n    for (let i = annotations.length - 1; i >= 0; i--) {\n      const annotation = annotations[i];\n      const isKnownType = annotation instanceof Directive || annotation instanceof Component ||\n          annotation instanceof Pipe || annotation instanceof NgModule;\n      if (isKnownType) {\n        return annotation instanceof this.type ? annotation : null;\n      }\n    }\n    return null;\n  }\n\n  resolve(type: Type<any>): T|null {\n    let resolved = this.resolved.get(type) || null;\n\n    if (!resolved) {\n      resolved = this.getAnnotation(type);\n      if (resolved) {\n        const overrides = this.overrides.get(type);\n        if (overrides) {\n          const overrider = new MetadataOverrider();\n          overrides.forEach(override => {\n            resolved = overrider.overrideMetadata(this.type, resolved !, override);\n          });\n        }\n      }\n      this.resolved.set(type, resolved);\n    }\n\n    return resolved;\n  }\n}\n\n\nexport class DirectiveResolver extends OverrideResolver<Directive> {\n  get type() { return Directive; }\n}\n\nexport class ComponentResolver extends OverrideResolver<Component> {\n  get type() { return Component; }\n}\n\nexport class PipeResolver extends OverrideResolver<Pipe> {\n  get type() { return Pipe; }\n}\n\nexport class NgModuleResolver extends OverrideResolver<NgModule> {\n  get type() { return NgModule; }\n}\n"]}