44 lines
1.1 KiB
TypeScript
44 lines
1.1 KiB
TypeScript
import {isPresent, BaseException} from 'angular2/src/facade/lang';
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import {ListWrapper, MapWrapper} from 'angular2/src/facade/collection';
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export class Locals {
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constructor(public parent: Locals, public current: Map<any, any>) {}
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contains(name: string): boolean {
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if (this.current.has(name)) {
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return true;
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}
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if (isPresent(this.parent)) {
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return this.parent.contains(name);
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}
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return false;
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}
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get(name: string) {
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if (this.current.has(name)) {
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return this.current.get(name);
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}
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if (isPresent(this.parent)) {
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return this.parent.get(name);
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}
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throw new BaseException(`Cannot find '${name}'`);
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}
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set(name: string, value): void {
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// TODO(rado): consider removing this check if we can guarantee this is not
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// exposed to the public API.
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// TODO: vsavkin maybe it should check only the local map
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if (this.current.has(name)) {
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this.current.set(name, value);
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} else {
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throw new BaseException(
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`Setting of new keys post-construction is not supported. Key: ${name}.`);
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}
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}
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clearValues(): void { MapWrapper.clearValues(this.current); }
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} |