Function parseAdd

demo/parser.js:43–55

()

    }

    function* parseAdd() {

        let node = yield * parseMultiply();

        while ((yield * peek()).type === "+") {

            yield * eat();
            let right = yield * parseMultiply()
            node = { type: "+", left: node, right, value: node.value + right.value };
        }

        return node;
    }

    function* parseMultiply() {