var __classPrivateFieldGet = (this && this.__classPrivateFieldGet) || function (receiver, state, kind, f) {
    if (kind === "a" && !f) throw new TypeError("Private accessor was defined without a getter");
    if (typeof state === "function" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError("Cannot read private member from an object whose class did not declare it");
    return kind === "m" ? f : kind === "a" ? f.call(receiver) : f ? f.value : state.get(receiver);
};
var _Visitor_instances, _Visitor_getNode;
import * as Nodes from './nodes/index.js';
export default class Visitor {
    constructor() {
        _Visitor_instances.add(this);
        this.scope = new Map();
        this.listeners = {};
        this.ast = [];
    }
    setAST(ast) {
        this.ast = ast;
    }
    run() {
        let result;
        for (const node of this.ast) {
            result = this.visitNode(node);
        }
        return result;
    }
    /**
     * Visits a given node and executes it.
     */
    visitNode(node) {
        if (!node)
            return null;
        const target_node = __classPrivateFieldGet(this, _Visitor_instances, "m", _Visitor_getNode).call(this, node.type);
        if (target_node) {
            const instance = new target_node(node, this);
            return instance.run();
        }
    }
    /**
     * Gets the name of a node.
     * @param node - The target node.
     */
    getName(node) {
        if (node.type === 'Identifier')
            return node.name;
        else if (node.type === 'Literal')
            return node.value;
    }
    /**
     * Listens for node calls. Can be used to override default behavior or add new functionality.
     * @param node_name - The node to listen for.
     * @param listener - The callback function.
     */
    on(node_name, listener) {
        this.listeners[node_name] = listener;
    }
}
_Visitor_instances = new WeakSet(), _Visitor_getNode = function _Visitor_getNode(type) {
    const node = Nodes[type];
    if (!node) {
        console.warn('[JINTER]:', `JavaScript node "${type}" not implemented!\nIf this is causing unexpected behavior, please report it at https://github.com/LuanRT/Jinter/issues/new`);
    }
    return node;
};