"use strict";

const { NoMatch, NotEnoughInput } = require("../symbols");

module.exports = function* literal(instruction, state) {
	let { string } = instruction;

	if (state.currentIndex + string.length > state.currentInput.length) {
		return NotEnoughInput;
	} else if (state.currentInput.slice(state.currentIndex, state.currentIndex + string.length) === string) {
		state.currentIndex += string.length;
		return string;
	} else {
		return NoMatch;
	}
};