"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.parseStringLiteral = void 0;
const rHex = /[\da-fA-F]/;
const rOct = /[0-7]/;
const escapeChar = {
    b: '\b',
    f: '\f',
    n: '\n',
    r: '\r',
    t: '\t',
    v: '\x0B'
};
function hexVal(c) {
    const code = c.charCodeAt(0);
    if (code >= 97)
        return code - 87;
    if (code >= 65)
        return code - 55;
    return code - 48;
}
function parseStringLiteral(str) {
    let ret = '';
    for (let i = 1; i < str.length - 1; i++) {
        if (str[i] !== '\\') {
            ret += str[i];
            continue;
        }
        if (escapeChar[str[i + 1]] !== undefined) {
            ret += escapeChar[str[++i]];
        }
        else if (str[i + 1] === 'u') {
            let val = 0;
            let j = i + 2;
            while (j <= i + 5 && rHex.test(str[j])) {
                val = val * 16 + hexVal(str[j++]);
            }
            i = j - 1;
            ret += String.fromCharCode(val);
        }
        else if (!rOct.test(str[i + 1])) {
            ret += str[++i];
        }
        else {
            let j = i + 1;
            let val = 0;
            while (j <= i + 3 && rOct.test(str[j])) {
                val = val * 8 + hexVal(str[j++]);
            }
            i = j - 1;
            ret += String.fromCharCode(val);
        }
    }
    return ret;
}
exports.parseStringLiteral = parseStringLiteral;
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