ActivationContext.ts
139 lines
| 3.3 KiB
| video/mp2t
|
TypeScriptLexer
cin
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r33 | import { TraceSource } from "../log/TraceSource"; | |
| import { argumentNotNull, argumentNotEmptyString, isPrimitive, each, isNull } from "../safe"; | |||
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r34 | import { Descriptor, ServiceMap, isDescriptor } from "./interfaces"; | |
| import { Container } from "./Container"; | |||
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r33 | ||
| let trace = TraceSource.get("di"); | |||
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r34 | export class ActivationContextInfo { | |
| name: string | |||
| service: string | |||
| scope: ServiceMap | |||
| } | |||
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r33 | ||
| export class ActivationContext { | |||
| _cache: object | |||
| _services: ServiceMap | |||
| _stack: ActivationContextInfo[] | |||
| _visited: any | |||
| container: any | |||
| constructor(container: Container, services: ServiceMap, cache?: object, visited?) { | |||
| argumentNotNull(container, "container"); | |||
| argumentNotNull(services, "services"); | |||
| this._visited = visited || {}; | |||
| this._stack = []; | |||
| this._cache = cache || {}; | |||
| this._services = services; | |||
| this.container = container; | |||
| } | |||
| getService(name, def?): any { | |||
| let d = this._services[name]; | |||
| if (!d) | |||
| if (arguments.length > 1) | |||
| return def; | |||
| else | |||
| throw new Error("Service '" + name + "' not found"); | |||
| return d.activate(this, name); | |||
| } | |||
| /** | |||
| * registers services local to the the activation context | |||
| * | |||
| * @name{string} the name of the service | |||
| * @service{string} the service descriptor to register | |||
| */ | |||
| register(name: string, service: Descriptor) { | |||
| argumentNotEmptyString(name, "name"); | |||
| this._services[name] = service; | |||
| } | |||
| clone() { | |||
| return new ActivationContext( | |||
| this.container, | |||
| Object.create(this._services), | |||
| this._cache, | |||
| this._visited | |||
| ); | |||
| } | |||
| has(id) { | |||
| return id in this._cache; | |||
| } | |||
| get(id) { | |||
| return this._cache[id]; | |||
| } | |||
| store(id, value) { | |||
| return (this._cache[id] = value); | |||
| } | |||
| parse(data: any, name) { | |||
| var me = this; | |||
| if (isPrimitive(data)) | |||
| return data; | |||
| if (isDescriptor(data)) { | |||
| return data.activate(this, name); | |||
| } else if (data instanceof Array) { | |||
| me.enter(name); | |||
| var v = data.map(function (x, i) { | |||
| return me.parse(x, "." + i); | |||
| }); | |||
| me.leave(); | |||
| return v; | |||
| } else { | |||
| me.enter(name); | |||
| var result = {}; | |||
| for (var p in data) | |||
| result[p] = me.parse(data[p], "." + p); | |||
| me.leave(); | |||
| return result; | |||
| } | |||
| } | |||
| visit(id) { | |||
| var count = this._visited[id] || 0; | |||
| this._visited[id] = count + 1; | |||
| return count; | |||
| } | |||
| getStack() { | |||
| return this._stack.slice().reverse(); | |||
| } | |||
| enter(name, d?, localize?) { | |||
| if (trace.isLogEnabled()) | |||
| trace.log("enter " + name + " " + (d || "") + | |||
| (localize ? " localize" : "")); | |||
| this._stack.push({ | |||
| name: name, | |||
| service: d, | |||
| scope: this._services | |||
| }); | |||
| if (localize) | |||
| this._services = Object.create(this._services); | |||
| } | |||
| leave() { | |||
| var ctx = this._stack.pop(); | |||
| this._services = ctx.scope; | |||
| if (trace.isLogEnabled()) | |||
| trace.log("leave " + ctx.name + " " + (ctx.service || "")); | |||
| } | |||
| } |