/**
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* @copyright (c) 2016, Philipp Thürwächter & Pattrick Hüper
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* @copyright (c) 2007-present, Stephen Colebourne & Michael Nascimento Santos
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* @license BSD-3-Clause (see LICENSE in the root directory of this source tree)
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*/
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import { IllegalArgumentException } from '../../errors';
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/**
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* Prints or parses a char literal.
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* @private
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*/
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export class CharLiteralPrinterParser {
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constructor(literal) {
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if (literal.length > 1) {
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throw new IllegalArgumentException(`invalid literal, too long: "${literal}"`);
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}
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this._literal = literal;
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}
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print(context, buf) {
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buf.append(this._literal);
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return true;
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}
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parse(context, text, position) {
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const length = text.length;
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if (position === length) {
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return ~position;
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}
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const ch = text.charAt(position);
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if (context.charEquals(this._literal, ch) === false) {
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return ~position;
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}
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return position + this._literal.length;
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}
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toString() {
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if (this._literal === '\'') {
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return "''";
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}
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return `'${this._literal}'`;
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}
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}
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