contrib/llvm/tools/lldb/include/lldb/Interpreter/CommandHistory.h

   1 //===-- CommandHistory.h ----------------------------------------*- C++ -*-===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is distributed under the University of Illinois Open Source
   6 // License. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9
  10 #ifndef liblldb_CommandHistory_h_
  11 #define liblldb_CommandHistory_h_
  12
  13 #include <mutex>
  14 #include <string>
  15 #include <vector>
  16
  17 #include "lldb/Utility/Stream.h"
  18 #include "lldb/lldb-private.h"
  19
  20 namespace lldb_private {
  21
  22 class CommandHistory {
  23 public:
  24   CommandHistory();
  25
  26   ~CommandHistory();
  27
  28   size_t GetSize() const;
  29
  30   bool IsEmpty() const;
  31
  32   llvm::Optional<llvm::StringRef> FindString(llvm::StringRef input_str) const;
  33
  34   llvm::StringRef GetStringAtIndex(size_t idx) const;
  35
  36   llvm::StringRef operator[](size_t idx) const;
  37
  38   llvm::StringRef GetRecentmostString() const;
  39
  40   void AppendString(llvm::StringRef str, bool reject_if_dupe = true);
  41
  42   void Clear();
  43
  44   void Dump(Stream &stream, size_t start_idx = 0,
  45             size_t stop_idx = SIZE_MAX) const;
  46
  47   static const char g_repeat_char = '!';
  48
  49 private:
  50   DISALLOW_COPY_AND_ASSIGN(CommandHistory);
  51
  52   typedef std::vector<std::string> History;
  53   mutable std::recursive_mutex m_mutex;
  54   History m_history;
  55 };
  56
  57 } // namespace lldb_private
  58
  59 #endif // liblldb_CommandHistory_h_