31 lines
945 B
TypeScript
31 lines
945 B
TypeScript
/**
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* @license
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* Copyright Google LLC 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 * as ts from 'typescript';
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/**
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* Return the node that most tightly encompasses the specified `position`.
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* @param node The starting node to start the top-down search.
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* @param position The target position within the `node`.
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*/
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export function findTightestNode(node: ts.Node, position: number): ts.Node|undefined {
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if (node.getStart() <= position && position < node.getEnd()) {
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return node.forEachChild(c => findTightestNode(c, position)) ?? node;
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}
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return undefined;
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}
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export function getParentClassDeclaration(startNode: ts.Node): ts.ClassDeclaration|undefined {
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while (startNode) {
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if (ts.isClassDeclaration(startNode)) {
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return startNode;
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}
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startNode = startNode.parent;
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}
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return undefined;
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}
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