50 lines
1.9 KiB
TypeScript
50 lines
1.9 KiB
TypeScript
/**
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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 {CompileDirectiveMetadata, CompilePipeMetadata, identifierName} from '../compile_metadata';
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import {CompileReflector} from '../compile_reflector';
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import {DefinitionKind} from '../constant_pool';
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import * as o from '../output/output_ast';
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import {OutputContext, error} from '../util';
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import {Identifiers as R3} from './r3_identifiers';
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import {createFactory} from './r3_view_compiler';
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export function compilePipe(
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outputCtx: OutputContext, pipe: CompilePipeMetadata, reflector: CompileReflector) {
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const definitionMapValues: {key: string, quoted: boolean, value: o.Expression}[] = [];
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// e.g. 'type: MyPipe`
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definitionMapValues.push(
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{key: 'type', value: outputCtx.importExpr(pipe.type.reference), quoted: false});
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// e.g. factory: function MyPipe_Factory() { return new MyPipe(); },
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const templateFactory = createFactory(pipe.type, outputCtx, reflector);
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definitionMapValues.push({key: 'factory', value: templateFactory, quoted: false});
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// e.g. pure: true
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if (pipe.pure) {
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definitionMapValues.push({key: 'pure', value: o.literal(true), quoted: false});
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}
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const className = identifierName(pipe.type) !;
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className || error(`Cannot resolve the name of ${pipe.type}`);
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outputCtx.statements.push(new o.ClassStmt(
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/* name */ className,
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/* parent */ null,
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/* fields */[new o.ClassField(
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/* name */ outputCtx.constantPool.propertyNameOf(DefinitionKind.Pipe),
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/* type */ o.INFERRED_TYPE,
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/* modifiers */[o.StmtModifier.Static],
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/* initializer */ o.importExpr(R3.definePipe).callFn([o.literalMap(
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definitionMapValues)]))],
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/* getters */[],
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/* constructorMethod */ new o.ClassMethod(null, [], []),
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/* methods */[]));
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} |