@angular/compiler
Version:
Angular - the compiler library
44 lines • 5.28 kB
JavaScript
/**
* @license
* Copyright Google Inc. 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 { StaticSymbol } from '../aot/static_symbol';
import * as o from '../output/output_ast';
/**
* Convert an object map with `Expression` values into a `LiteralMapExpr`.
*/
export function mapToMapExpression(map) {
const result = Object.keys(map).map(key => ({ key, value: map[key], quoted: false }));
return o.literalMap(result);
}
/**
* Convert metadata into an `Expression` in the given `OutputContext`.
*
* This operation will handle arrays, references to symbols, or literal `null` or `undefined`.
*/
export function convertMetaToOutput(meta, ctx) {
if (Array.isArray(meta)) {
return o.literalArr(meta.map(entry => convertMetaToOutput(entry, ctx)));
}
if (meta instanceof StaticSymbol) {
return ctx.importExpr(meta);
}
if (meta == null) {
return o.literal(meta);
}
throw new Error(`Internal error: Unsupported or unknown metadata: ${meta}`);
}
export function typeWithParameters(type, numParams) {
let params = null;
if (numParams > 0) {
params = [];
for (let i = 0; i < numParams; i++) {
params.push(o.DYNAMIC_TYPE);
}
}
return o.expressionType(type, null, params);
}
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