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 <optional> 14#include <string> 15#include <vector> 16 17#include "lldb/Utility/Stream.h" 18#include "lldb/lldb-private.h" 19 20namespace lldb_private { 21 22class CommandHistory { 23public: 24 CommandHistory() = default; 25 26 ~CommandHistory() = default; 27 28 size_t GetSize() const; 29 30 bool IsEmpty() const; 31 32 std::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 49private: 50 CommandHistory(const CommandHistory &) = delete; 51 const CommandHistory &operator=(const CommandHistory &) = delete; 52 53 typedef std::vector<std::string> History; 54 mutable std::recursive_mutex m_mutex; 55 History m_history; 56}; 57 58} // namespace lldb_private 59 60#endif // LLDB_INTERPRETER_COMMANDHISTORY_H 61