expression-evaluation/dst/node/ObjectNode.js

Expression Evaluation

import { Node } from '../Node.js';
import { ConstantNode } from './ConstantNode.js';
import { typeObject, typeString, typeUnknown } from '../Type.js';
export class ObjectNode extends Node {
    _subnodes;
    constructor(frame, _subnodes) {
        super(frame);
        this._subnodes = _subnodes;
    }
    get type() {
        return typeObject;
    }
    compile(type) {
        this.reduceType(type);
        let constant = true;
        for (let i = 0; i < this._subnodes.length; ++i) {
            this._subnodes[i][0] = this._subnodes[i][0].compile(typeString);
            constant &&= this._subnodes[i][0].constant;
            this._subnodes[i][1] = this._subnodes[i][1].compile(typeUnknown);
            constant &&= this._subnodes[i][1].constant;
        }
        return constant ? new ConstantNode(this, this.evaluate()) : this;
    }
    evaluate() {
        const obj = {};
        for (const [key, value] of this._subnodes) {
            obj[key.evaluate()] = value.evaluate();
        }
        return obj;
    }
    toString(ident = 0) {
        return `${super.toString(ident)} object node`
            + `, subnodes:\n${this._subnodes.map(([k, v]) => `${k.toString(ident + 1)}:\n${v.toString(ident + 1)}`).join('\n')}`;
    }
}