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 LLDB_INTERPRETER_COMMANDHISTORY_H 10 #define LLDB_INTERPRETER_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 CommandHistory(const CommandHistory &) = delete; 50 const CommandHistory &operator=(const CommandHistory &) = delete; 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 // LLDB_INTERPRETER_COMMANDHISTORY_H 60