41 lines
1.2 KiB
TypeScript
41 lines
1.2 KiB
TypeScript
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/**
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* @license
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* Copyright Google Inc. All Rights Reserved.
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*
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* Use of this source code is governed by an MIT-style license that can be
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* found in the LICENSE file at https://angular.io/license
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*/
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import {Expression, WrappedNodeExpr, compilePipeFromMetadata, jitExpression} from '@angular/compiler';
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import {Pipe} from '../../metadata/directives';
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import {Type} from '../../type';
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import {stringify} from '../util';
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import {angularCoreEnv} from './environment';
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import {NG_PIPE_DEF} from './fields';
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import {reflectDependencies} from './util';
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export function compilePipe(type: Type<any>, meta: Pipe): void {
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let def: any = null;
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Object.defineProperty(type, NG_PIPE_DEF, {
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get: () => {
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if (def === null) {
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const sourceMapUrl = `ng://${stringify(type)}/ngPipeDef.js`;
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const name = type.name;
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const res = compilePipeFromMetadata({
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name,
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type: new WrappedNodeExpr(type),
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deps: reflectDependencies(type),
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pipeName: meta.name,
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pure: meta.pure !== undefined ? meta.pure : true,
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});
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def = jitExpression(res.expression, angularCoreEnv, sourceMapUrl);
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}
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return def;
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}
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});
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}
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