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 // C Includes
14 // C++ Includes
15 #include <string>
16 #include <vector>
17 
18 // Other libraries and framework includes
19 // Project includes
20 
21 #include "lldb/lldb-private.h"
22 #include "lldb/Core/Stream.h"
23 #include "lldb/Host/Mutex.h"
24 
25 namespace lldb_private {
26 
27 class CommandHistory
28 {
29 public:
30     CommandHistory ();
31 
32     ~CommandHistory ();
33 
34     size_t
35     GetSize () const;
36 
37     bool
38     IsEmpty () const;
39 
40     const char*
41     FindString (const char* input_str) const;
42 
43     const char*
44     GetStringAtIndex (size_t idx) const;
45 
46     const char*
47     operator [] (size_t idx) const;
48 
49     const char*
50     GetRecentmostString () const;
51 
52     void
53     AppendString (const std::string& str,
54                   bool reject_if_dupe = true);
55 
56     void
57     Clear ();
58 
59     void
60     Dump (Stream& stream,
61           size_t start_idx = 0,
62           size_t stop_idx = SIZE_MAX) const;
63 
64     static const char g_repeat_char = '!';
65 
66 private:
67     DISALLOW_COPY_AND_ASSIGN(CommandHistory);
68 
69     typedef std::vector<std::string> History;
70     mutable Mutex m_mutex;
71     History m_history;
72 };
73 
74 } // namespace lldb_private
75 
76 #endif  // liblldb_CommandHistory_h_
77