// @ts-check
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/** @typedef { import('estree').BaseNode} BaseNode */
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/** @typedef {{
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skip: () => void;
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remove: () => void;
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replace: (node: BaseNode) => void;
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}} WalkerContext */
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export class WalkerBase {
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constructor() {
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/** @type {boolean} */
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this.should_skip = false;
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/** @type {boolean} */
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this.should_remove = false;
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/** @type {BaseNode | null} */
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this.replacement = null;
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/** @type {WalkerContext} */
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this.context = {
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skip: () => (this.should_skip = true),
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remove: () => (this.should_remove = true),
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replace: (node) => (this.replacement = node)
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};
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}
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/**
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*
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* @param {any} parent
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* @param {string} prop
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* @param {number} index
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* @param {BaseNode} node
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*/
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replace(parent, prop, index, node) {
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if (parent) {
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if (index !== null) {
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parent[prop][index] = node;
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} else {
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parent[prop] = node;
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}
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}
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}
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/**
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*
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* @param {any} parent
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* @param {string} prop
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* @param {number} index
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*/
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remove(parent, prop, index) {
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if (parent) {
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if (index !== null) {
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parent[prop].splice(index, 1);
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} else {
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delete parent[prop];
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}
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}
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}
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}
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