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17 lines
457 B
JavaScript
17 lines
457 B
JavaScript
"use strict";
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const { NoMatch, NotEnoughInput } = require("../symbols");
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module.exports = function* literal(instruction, state) {
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let { string } = instruction;
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if (state.currentIndex + string.length > state.currentInput.length) {
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return NotEnoughInput;
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} else if (state.currentInput.slice(state.currentIndex, state.currentIndex + string.length) === string) {
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state.currentIndex += string.length;
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return string;
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} else {
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return NoMatch;
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}
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};
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