OptionValueBoolean.h revision 73844aa19a7360b662e2be710fc3c969d6c86606 
1//===-- OptionValueBoolean.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_OptionValueBoolean_h_
11#define liblldb_OptionValueBoolean_h_
12
13// C Includes
14// C++ Includes
15// Other libraries and framework includes
16// Project includes
17#include "lldb/Interpreter/OptionValue.h"
18
19namespace lldb_private {
20
21class OptionValueBoolean : public OptionValue
22{
23public:
24    OptionValueBoolean (bool value) :
25        OptionValue(),
26        m_current_value (value),
27        m_default_value (value)
28    {
29    }
30    OptionValueBoolean (bool current_value,
31                        bool default_value) :
32        OptionValue(),
33        m_current_value (current_value),
34        m_default_value (default_value)
35    {
36    }
37
38    virtual
39    ~OptionValueBoolean()
40    {
41    }
42
43    //---------------------------------------------------------------------
44    // Virtual subclass pure virtual overrides
45    //---------------------------------------------------------------------
46
47    virtual OptionValue::Type
48    GetType () const
49    {
50        return eTypeBoolean;
51    }
52
53    virtual void
54    DumpValue (const ExecutionContext *exe_ctx, Stream &strm, uint32_t dump_mask);
55
56    virtual Error
57    SetValueFromCString (const char *value,
58                         VarSetOperationType op = eVarSetOperationAssign);
59
60    virtual bool
61    Clear ()
62    {
63        m_current_value = m_default_value;
64        m_value_was_set = false;
65        return true;
66    }
67
68    //---------------------------------------------------------------------
69    // Subclass specific functions
70    //---------------------------------------------------------------------
71
72    //------------------------------------------------------------------
73    /// Convert to bool operator.
74    ///
75    /// This allows code to check a OptionValueBoolean in conditions.
76    ///
77    /// @code
78    /// OptionValueBoolean bool_value(...);
79    /// if (bool_value)
80    /// { ...
81    /// @endcode
82    ///
83    /// @return
84    ///     /b True this object contains a valid namespace decl, \b
85    ///     false otherwise.
86    //------------------------------------------------------------------
87    operator bool() const
88    {
89        return m_current_value;
90    }
91
92    const bool &
93    operator = (bool b)
94    {
95        m_current_value = b;
96        return m_current_value;
97    }
98
99    bool
100    GetCurrentValue() const
101    {
102        return m_current_value;
103    }
104
105    bool
106    GetDefaultValue() const
107    {
108        return m_default_value;
109    }
110
111    void
112    SetCurrentValue (bool value)
113    {
114        m_current_value = value;
115    }
116
117    void
118    SetDefaultValue (bool value)
119    {
120        m_default_value = value;
121    }
122
123    virtual lldb::OptionValueSP
124    DeepCopy () const;
125
126protected:
127    bool m_current_value;
128    bool m_default_value;
129};
130
131} // namespace lldb_private
132
133#endif  // liblldb_OptionValueBoolean_h_
134