36 lines
1.2 KiB
TypeScript
36 lines
1.2 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 {assertEqual, assertNotEqual} from './assert';
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import {LNode, LNodeFlags} from './l_node';
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export function assertNodeType(node: LNode, type: LNodeFlags) {
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assertNotEqual(node, null, 'node');
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assertEqual(node.flags & LNodeFlags.TYPE_MASK, type, 'Node.type', typeSerializer);
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}
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export function assertNodeOfPossibleTypes(node: LNode, ...types: LNodeFlags[]) {
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assertNotEqual(node, null, 'node');
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const nodeType = (node.flags & LNodeFlags.TYPE_MASK);
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for (let i = 0; i < types.length; i++) {
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if (nodeType === types[i]) {
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return;
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}
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}
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throw new Error(
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`Expected node of possible types: ${types.map(typeSerializer).join(', ')} but got ${typeSerializer(nodeType)}`);
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}
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function typeSerializer(type: LNodeFlags): string {
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if (type == LNodeFlags.Projection) return 'Projection';
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if (type == LNodeFlags.Container) return 'Container';
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if (type == LNodeFlags.View) return 'View';
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if (type == LNodeFlags.Element) return 'Element';
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return '??? ' + type + ' ???';
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}
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