InputReader.h revision 63094e0bb161580564954dee512955c1c79d3476 
1//===-- InputReader.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_InputReader_h_
11#define liblldb_InputReader_h_
12
13#include <termios.h>
14
15#include "lldb/lldb-include.h"
16#include "lldb/lldb-enumerations.h"
17#include "lldb/Core/Debugger.h"
18
19
20namespace lldb_private {
21
22class InputReader
23{
24public:
25
26    typedef size_t (*Callback) (void *baton,
27                                InputReader &reader,
28                                lldb::InputReaderAction notification,
29                                const char *bytes,
30                                size_t bytes_len);
31
32    InputReader (Debugger &debugger);
33
34    virtual
35    ~InputReader ();
36
37    virtual Error
38    Initialize (Callback callback,
39                void *baton,
40                lldb::InputReaderGranularity token_size,
41                const char *end_token,
42                const char *prompt,
43                bool echo);
44
45    bool
46    IsDone () const
47    {
48        return m_done;
49    }
50
51    void
52    SetIsDone (bool b)
53    {
54        m_done = b;
55    }
56
57    lldb::InputReaderGranularity
58    GetGranularity () const
59    {
60        return m_granularity;
61    }
62
63    bool
64    GetEcho () const
65    {
66        return m_echo;
67    }
68
69    // Subclasses _can_ override this function to get input as it comes in
70    // without any granularity
71    virtual size_t
72    HandleRawBytes (const char *bytes, size_t bytes_len);
73
74    Debugger &
75    GetDebugger()
76    {
77        return m_debugger;
78    }
79
80    bool
81    IsActive () const
82    {
83        return m_active;
84    }
85
86    const char *
87    GetPrompt () const;
88
89    void
90    RefreshPrompt();
91
92protected:
93    friend class Debugger;
94
95    void
96    Notify (lldb::InputReaderAction notification);
97
98    Debugger &m_debugger;
99    Callback m_callback;
100    void *m_callback_baton;
101    std::string m_end_token;
102    std::string m_prompt;
103    lldb::InputReaderGranularity m_granularity;
104    bool m_done;
105    bool m_echo;
106    bool m_active;
107
108private:
109    DISALLOW_COPY_AND_ASSIGN (InputReader);
110
111};
112
113} // namespace lldb_private
114
115#endif // #ifndef liblldb_InputReader_h_
116