@angular/core
Version:
Angular - the core framework
53 lines • 6.89 kB
JavaScript
/**
* @license
* Copyright Google LLC All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
import { getCompilerFacade } from '../../compiler/compiler_facade';
import { reflectDependencies } from '../../di/jit/util';
import { NG_FACTORY_DEF, NG_PIPE_DEF } from '../fields';
import { angularCoreEnv } from './environment';
export function compilePipe(type, meta) {
let ngPipeDef = null;
let ngFactoryDef = null;
Object.defineProperty(type, NG_FACTORY_DEF, {
get: () => {
if (ngFactoryDef === null) {
const metadata = getPipeMetadata(type, meta);
const compiler = getCompilerFacade();
ngFactoryDef = compiler.compileFactory(angularCoreEnv, `ng:///${metadata.name}/ɵfac.js`, {
name: metadata.name,
type: metadata.type,
typeArgumentCount: 0,
deps: reflectDependencies(type),
target: compiler.FactoryTarget.Pipe
});
}
return ngFactoryDef;
},
// Make the property configurable in dev mode to allow overriding in tests
configurable: !!ngDevMode,
});
Object.defineProperty(type, NG_PIPE_DEF, {
get: () => {
if (ngPipeDef === null) {
const metadata = getPipeMetadata(type, meta);
ngPipeDef = getCompilerFacade().compilePipe(angularCoreEnv, `ng:///${metadata.name}/ɵpipe.js`, metadata);
}
return ngPipeDef;
},
// Make the property configurable in dev mode to allow overriding in tests
configurable: !!ngDevMode,
});
}
function getPipeMetadata(type, meta) {
return {
type: type,
name: type.name,
pipeName: meta.name,
pure: meta.pure !== undefined ? meta.pure : true
};
}
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