57 lines
1.9 KiB
Plaintext
57 lines
1.9 KiB
Plaintext
"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.simpleTraverse = simpleTraverse;
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const visitor_keys_1 = require("@typescript-eslint/visitor-keys");
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function isValidNode(x) {
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return (typeof x === 'object' &&
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x != null &&
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'type' in x &&
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typeof x.type === 'string');
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}
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function getVisitorKeysForNode(allVisitorKeys, node) {
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const keys = allVisitorKeys[node.type];
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return (keys ?? []);
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}
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class SimpleTraverser {
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constructor(selectors, setParentPointers = false) {
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this.allVisitorKeys = visitor_keys_1.visitorKeys;
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this.selectors = selectors;
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this.setParentPointers = setParentPointers;
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if (selectors.visitorKeys) {
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this.allVisitorKeys = selectors.visitorKeys;
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}
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}
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traverse(node, parent) {
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if (!isValidNode(node)) {
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return;
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}
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if (this.setParentPointers) {
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node.parent = parent;
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}
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if ('enter' in this.selectors) {
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this.selectors.enter(node, parent);
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}
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else if (node.type in this.selectors.visitors) {
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this.selectors.visitors[node.type](node, parent);
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}
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const keys = getVisitorKeysForNode(this.allVisitorKeys, node);
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if (keys.length < 1) {
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return;
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}
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for (const key of keys) {
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const childOrChildren = node[key];
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if (Array.isArray(childOrChildren)) {
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for (const child of childOrChildren) {
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this.traverse(child, node);
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}
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}
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else {
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this.traverse(childOrChildren, node);
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}
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}
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}
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}
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function simpleTraverse(startingNode, options, setParentPointers = false) {
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new SimpleTraverser(options, setParentPointers).traverse(startingNode, undefined);
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}
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//# sourceMappingURL=simple-traverse.js.map |