DescriptorBuilder.ts
58 lines
| 2.1 KiB
| video/mp2t
|
TypeScriptLexer
cin
|
r133 | import { Resolver, ServiceModule, LazyDependencyOptions, DependencyOptions } from "./interfaces"; | ||
| import { AnnotationBuilder } from "../Annotations"; | ||||
| import { Container } from "../Container"; | ||||
| import { Descriptor, ILifetime, ContainerKeys } from "../interfaces"; | ||||
| import { ActivationContext } from "../ActivationContext"; | ||||
| export class DescriptorBuilder<T, S extends object> { | ||||
| readonly _container: Container<S>; | ||||
| readonly _cb: (d: Descriptor<S, T>) => void; | ||||
| constructor(container: Container<S>, cb: (d: Descriptor<S, T>) => void) { | ||||
| this._container = container; | ||||
| this._cb = cb; | ||||
| } | ||||
| service(service: AnnotationBuilder<T, S> | ServiceModule<T, S>) { | ||||
| } | ||||
| factory(f: (resolve: Resolver<S>, activate: (lifetime: ILifetime, factory: () => any, cleanup?: (item: any) => void) => any) => T): void { | ||||
| this._cb({ | ||||
| activate(context: ActivationContext<S>) { | ||||
| const resolve = (name: ContainerKeys<S>, opts?: DependencyOptions | LazyDependencyOptions) => { | ||||
| if (opts && "lazy" in opts && opts.lazy) { | ||||
| const c2 = context.clone(); | ||||
| return () => { | ||||
| return opts.optional ? c2.resolve(name, opts.default) : c2.resolve(name); | ||||
| }; | ||||
| } else { | ||||
| return opts && opts.optional ? context.resolve(name, opts.default) : context.resolve(name); | ||||
| } | ||||
| }; | ||||
| const activate = (lifetime: ILifetime, factory: () => any, cleanup?: (item: any) => void) => { | ||||
| if (lifetime.has()) { | ||||
| return lifetime.get(); | ||||
| } else { | ||||
| lifetime.enter(); | ||||
| const instance = factory(); | ||||
| lifetime.store(instance, cleanup); | ||||
| return instance; | ||||
| } | ||||
| }; | ||||
| return f(resolve, activate); | ||||
| } | ||||
| }); | ||||
| } | ||||
| value(v: T): void { | ||||
| this._cb({ | ||||
| activate() { | ||||
| return v; | ||||
| } | ||||
| }); | ||||
| } | ||||
| } | ||||