compiler-rt/lib/scudo/standalone/flags_parser.h

   1 //===-- flags_parser.h ------------------------------------------*- C++ -*-===//
   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 #ifndef SCUDO_FLAGS_PARSER_H_
  10 #define SCUDO_FLAGS_PARSER_H_
  11
  12 #include "report.h"
  13 #include "string_utils.h"
  14
  15 #include <stddef.h>
  16
  17 namespace scudo {
  18
  19 enum class FlagType : u8 {
  20   FT_bool,
  21   FT_int,
  22 };
  23
  24 class FlagParser {
  25 public:
  26   void registerFlag(const char *Name, const char *Desc, FlagType Type,
  27                     void *Var);
  28   void parseString(const char *S);
  29   void printFlagDescriptions();
  30   void parseStringPair(const char *Name, const char *Value);
  31
  32 private:
  33   static const u32 MaxFlags = 20;
  34   struct Flag {
  35     const char *Name;
  36     const char *Desc;
  37     FlagType Type;
  38     void *Var;
  39   } Flags[MaxFlags];
  40
  41   u32 NumberOfFlags = 0;
  42   const char *Buffer = nullptr;
  43   uptr Pos = 0;
  44
  45   void reportFatalError(const char *Error);
  46   void skipWhitespace();
  47   void parseFlags();
  48   void parseFlag();
  49   bool runHandler(const char *Name, const char *Value, char Sep);
  50 };
  51
  52 void reportUnrecognizedFlags();
  53
  54 } // namespace scudo
  55
  56 #endif // SCUDO_FLAGS_PARSER_H_