flang/lib/Parser/char-set.cpp

   1 //===-- lib/Parser/char-set.cpp -------------------------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 #include "flang/Parser/char-set.h"
  10
  11 namespace Fortran::parser {
  12
  13 std::string SetOfChars::ToString() const {
  14   std::string result;
  15   SetOfChars set{*this};
  16   for (char ch{' '}; !set.empty(); ++ch) {
  17     if (set.Has(ch)) {
  18       set = set.Difference(ch);
  19       result += ch;
  20     }
  21   }
  22   return result;
  23 }
  24 } // namespace Fortran::parser