46 lines
1.9 KiB
JavaScript
46 lines
1.9 KiB
JavaScript
/******************************************************************************
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* Copyright 2021 TypeFox GmbH
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* This program and the accompanying materials are made available under the
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* terms of the MIT License, which is available in the project root.
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******************************************************************************/
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export class DefaultAstNodeLocator {
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constructor() {
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this.segmentSeparator = '/';
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this.indexSeparator = '@';
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}
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getAstNodePath(node) {
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if (node.$container) {
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const containerPath = this.getAstNodePath(node.$container);
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const newSegment = this.getPathSegment(node);
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const nodePath = containerPath + this.segmentSeparator + newSegment;
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return nodePath;
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}
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return '';
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}
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getPathSegment({ $containerProperty, $containerIndex }) {
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if (!$containerProperty) {
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throw new Error("Missing '$containerProperty' in AST node.");
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}
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if ($containerIndex !== undefined) {
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return $containerProperty + this.indexSeparator + $containerIndex;
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}
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return $containerProperty;
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}
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getAstNode(node, path) {
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const segments = path.split(this.segmentSeparator);
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return segments.reduce((previousValue, currentValue) => {
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if (!previousValue || currentValue.length === 0) {
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return previousValue;
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}
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const propertyIndex = currentValue.indexOf(this.indexSeparator);
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if (propertyIndex > 0) {
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const property = currentValue.substring(0, propertyIndex);
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const arrayIndex = parseInt(currentValue.substring(propertyIndex + 1));
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const array = previousValue[property];
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return array === null || array === void 0 ? void 0 : array[arrayIndex];
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}
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return previousValue[currentValue];
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}, node);
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}
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}
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//# sourceMappingURL=ast-node-locator.js.map
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