C++ (Cpp) FormatStringHandler::HandleInvalidPosition Beispiele

Beispiel #1

Datei: FormatString.cpp Projekt: AlexDenisov/clang

OptionalAmount
clang::analyze_format_string::ParsePositionAmount(FormatStringHandler &H,
                                                  const char *Start,
                                                  const char *&Beg,
                                                  const char *E,
                                                  PositionContext p) {
  if (*Beg == '*') {
    const char *I = Beg + 1;
    const OptionalAmount &Amt = ParseAmount(I, E);

    if (Amt.getHowSpecified() == OptionalAmount::NotSpecified) {
      H.HandleInvalidPosition(Beg, I - Beg, p);
      return OptionalAmount(false);
    }

    if (I == E) {
      // No more characters left?
      H.HandleIncompleteSpecifier(Start, E - Start);
      return OptionalAmount(false);
    }

    assert(Amt.getHowSpecified() == OptionalAmount::Constant);

    if (*I == '$') {
      // Handle positional arguments

      // Special case: '*0$', since this is an easy mistake.
      if (Amt.getConstantAmount() == 0) {
        H.HandleZeroPosition(Beg, I - Beg + 1);
        return OptionalAmount(false);
      }

      const char *Tmp = Beg;
      Beg = ++I;

      return OptionalAmount(OptionalAmount::Arg, Amt.getConstantAmount() - 1,
                            Tmp, 0, true);
    }

    H.HandleInvalidPosition(Beg, I - Beg, p);
    return OptionalAmount(false);
  }

  return ParseAmount(Beg, E);
}