AggregateDescriptor.ts
39 lines
| 1.1 KiB
| video/mp2t
|
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r49 | import { Descriptor, isDescriptor } from "./interfaces"; | ||
| import { ActivationContext } from "./ActivationContext"; | ||||
| import { isPrimitive } from "../safe"; | ||||
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r114 | type Parse<T> = T extends Descriptor<infer V> ? V : | ||
| T extends {} ? { [K in keyof T]: Parse<T[K]> } : | ||||
| T; | ||||
| export class AggregateDescriptor<T> implements Descriptor<Parse<T>> { | ||||
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r113 | _value: T; | ||
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r49 | |||
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r113 | constructor(value: T) { | ||
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r49 | this._value = value; | ||
| } | ||||
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r114 | activate<S>(context: ActivationContext<S>) { | ||
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r49 | return this._parse(this._value, context, "$value"); | ||
| } | ||||
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r114 | _parse<S, V>(value: V, context: ActivationContext<S>, path: string): Parse<V> { | ||
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r49 | if (isPrimitive(value)) | ||
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r114 | return value as any; | ||
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r49 | |||
| if (isDescriptor(value)) | ||||
| return context.activate(value, path); | ||||
| if (value instanceof Array) | ||||
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r114 | return value.map((x, i) => this._parse(x, context, `${path}[${i}]`)) as any; | ||
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r114 | const t: any = {}; | ||
| for (const p in value) | ||||
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r49 | t[p] = this._parse(value[p], context, `${path}.${p}`); | ||
| return t; | ||||
| } | ||||
| toString() { | ||||
| return "@walk"; | ||||
| } | ||||
| } | ||||