contrib/llvm-project/lldb/include/lldb/Interpreter/CommandHistory.h

   1 //===-- CommandHistory.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 liblldb_CommandHistory_h_
  10 #define liblldb_CommandHistory_h_
  11
  12 #include <mutex>
  13 #include <string>
  14 #include <vector>
  15
  16 #include "lldb/Utility/Stream.h"
  17 #include "lldb/lldb-private.h"
  18
  19 namespace lldb_private {
  20
  21 class CommandHistory {
  22 public:
  23   CommandHistory();
  24
  25   ~CommandHistory();
  26
  27   size_t GetSize() const;
  28
  29   bool IsEmpty() const;
  30
  31   llvm::Optional<llvm::StringRef> FindString(llvm::StringRef input_str) const;
  32
  33   llvm::StringRef GetStringAtIndex(size_t idx) const;
  34
  35   llvm::StringRef operator[](size_t idx) const;
  36
  37   llvm::StringRef GetRecentmostString() const;
  38
  39   void AppendString(llvm::StringRef str, bool reject_if_dupe = true);
  40
  41   void Clear();
  42
  43   void Dump(Stream &stream, size_t start_idx = 0,
  44             size_t stop_idx = SIZE_MAX) const;
  45
  46   static const char g_repeat_char = '!';
  47
  48 private:
  49   DISALLOW_COPY_AND_ASSIGN(CommandHistory);
  50
  51   typedef std::vector<std::string> History;
  52   mutable std::recursive_mutex m_mutex;
  53   History m_history;
  54 };
  55
  56 } // namespace lldb_private
  57
  58 #endif // liblldb_CommandHistory_h_