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WIP lifetime services
WIP lifetime services
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ContainerBuilder.ts
65 lines | 2.0 KiB | video/mp2t | TypeScriptLexer
/ src / main / ts / ContainerBuilder.ts
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 r5 import { Container } from "./Container";
import { DescriptorBuilder } from "./DescriptorBuilder";
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 r9 import { Descriptor, IContainerBuilder, IDescriptorBuilder, DescriptorMap, ServiceLocator, ILifetime, IDestroyable } from "./interfaces";
import { emptyLifetime, LifetimeManager } from "./LifetimeManager";
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 r11 import { isDestroyable, prototype } from "./traits";
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 r5
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 r9 /**
* Container builder used to prepare service descriptors and create a IoC container
*/
export class ContainerBuilder<S, U extends keyof S> implements
IContainerBuilder<S, U> {
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private _pending = 1;
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 r9 private readonly _services: DescriptorMap<S>;
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private readonly _lifetimeManager = new LifetimeManager();
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 r9 private readonly _lifetime: ILifetime<IDestroyable>;
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 r11 constructor(parentServices: DescriptorMap<S> | null = null, lifetime?: ILifetime<IDestroyable>) {
this._services = prototype(parentServices);
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 r9 this._lifetimeManager = new LifetimeManager();
this._lifetime = lifetime ?? emptyLifetime();
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 r5 }
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 r9 createServiceBuilder<K extends U>(name: K):
IDescriptorBuilder<S, S[K], Record<never, never>, U> {
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return new DescriptorBuilder(this._lifetimeManager, this._register(name), this._fail);
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 r9
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 r5 }
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 r9 build(): ServiceLocator<S> {
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 r5 this._assertBuilding();
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 r9 if (!this._complete())
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 r5 throw new Error("The configuration didn't complete.");
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 r9
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 r12 const {remove, store} = this._lifetime(null);
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 r9
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 r12 const container = new Container(this._services, this._lifetimeManager, remove);
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 r9
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 r12 store(container);
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return container;
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 r5 }
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 r9 private readonly _register = <K extends U>(name: K) =>
(descriptor: Descriptor<S, S[K]>) => {
this._complete();
this._services[name] = descriptor;
};
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private readonly _fail = (ex: unknown) => {
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 r9 throw ex;
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 r5 };
private _assertBuilding() {
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 r9 if (!this._pending)
throw new Error("The descriptor builder is finalized");
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 r5 }
private _complete() {
return !(--this._pending);
}
}