70 lines
3 KiB
JavaScript
70 lines
3 KiB
JavaScript
var __classPrivateFieldSet = (this && this.__classPrivateFieldSet) || function (receiver, state, value, kind, f) {
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if (kind === "m") throw new TypeError("Private method is not writable");
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if (kind === "a" && !f) throw new TypeError("Private accessor was defined without a setter");
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if (typeof state === "function" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError("Cannot write private member to an object whose class did not declare it");
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return (kind === "a" ? f.call(receiver, value) : f ? f.value = value : state.set(receiver, value)), value;
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};
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var __classPrivateFieldGet = (this && this.__classPrivateFieldGet) || function (receiver, state, kind, f) {
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if (kind === "a" && !f) throw new TypeError("Private accessor was defined without a getter");
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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");
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return kind === "m" ? f : kind === "a" ? f.call(receiver) : f ? f.value : state.get(receiver);
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};
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var _Jinter_ast;
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import Visitor from './visitor.js';
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import { parse } from 'acorn';
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import { JinterError } from './utils/index.js';
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export default class Jinter {
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constructor() {
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_Jinter_ast.set(this, []);
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this.visitor = new Visitor();
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this.scope = this.visitor.scope;
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this.scope.set('print', (args) => console.log(...args));
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this.defineObject('console', console);
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this.defineObject('Math', Math);
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this.defineObject('String', String);
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this.defineObject('Array', Array);
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this.defineObject('Date', Date);
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}
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defineObject(name, obj) {
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this.visitor.on(name, (node, visitor) => {
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if (node.type === 'Identifier')
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return obj;
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if (node.type === 'CallExpression' && node.callee.type === 'MemberExpression') {
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const prop = visitor.visitNode(node.callee.property);
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const args = node.arguments.map((arg) => visitor.visitNode(arg));
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const callable = obj[prop];
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if (!callable)
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return '__continue_exec';
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return callable.apply(obj, args);
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}
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return '__continue_exec';
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});
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}
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/**
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* Generates an AST from the input.
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*/
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parseScript(input) {
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try {
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return parse(input, { ecmaVersion: 2020 });
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}
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catch (e) {
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throw new JinterError(e.message);
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}
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}
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/**
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* Evaluates the program.
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* @returns The result of the last statement in the program.
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*/
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evaluate(input) {
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try {
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const program = parse(input, { ecmaVersion: 2020 });
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__classPrivateFieldSet(this, _Jinter_ast, program.body, "f");
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}
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catch (e) {
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throw new JinterError(e.message);
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}
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this.visitor.setAST(__classPrivateFieldGet(this, _Jinter_ast, "f"));
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return this.visitor.run();
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}
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}
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_Jinter_ast = new WeakMap();
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