Function parseBracesQuant

src/pkg/utils/regex_to_glob.ts:301–325

(s: string, idx: number)

    nmax?: number;
  }
  function parseBracesQuant(s: string, idx: number): QuantifierResult {
    const start = idx;
    idx++;
    let num = "";
    while (idx < s.length && /[0-9]/.test(s[idx])) num += s[idx++];
    if (num === "" || idx >= s.length) return { ok: false, next: start };
    const m = parseInt(num, 10);
    if (s[idx] === "}") {
      idx++;
      eatQuantMod();
      return { ok: true, next: idx, type: "exact", m };
    }
    if (s[idx] === ",") {
      idx++;
      let num2 = "";
      while (idx < s.length && /[0-9]/.test(s[idx])) num2 += s[idx++];
      if (idx >= s.length || s[idx] !== "}") return { ok: false, next: start };
      idx++;
      eatQuantMod();
      if (num2 === "") return { ok: true, next: idx, type: "open", m }; // {m,}
      const nmax = parseInt(num2, 10);
      return { ok: true, next: idx, type: "range", m, nmax }; // {m,n}
    }
    return { ok: false, next: start };
  }

  interface SequenceAnalysis {
    base: string;