1 //===-- OptionValueBoolean.cpp ------------------------------------*- 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 #include "lldb/Interpreter/OptionValueBoolean.h"
11 
12 // C Includes
13 // C++ Includes
14 // Other libraries and framework includes
15 // Project includes
16 #include "lldb/Core/Stream.h"
17 #include "lldb/Core/StringList.h"
18 #include "lldb/Interpreter/Args.h"
19 #include "llvm/ADT/STLExtras.h"
20 
21 using namespace lldb;
22 using namespace lldb_private;
23 
24 void
25 OptionValueBoolean::DumpValue (const ExecutionContext *exe_ctx, Stream &strm, uint32_t dump_mask)
26 {
27     if (dump_mask & eDumpOptionType)
28         strm.Printf ("(%s)", GetTypeAsCString ());
29 //    if (dump_mask & eDumpOptionName)
30 //        DumpQualifiedName (strm);
31     if (dump_mask & eDumpOptionValue)
32     {
33         if (dump_mask & eDumpOptionType)
34             strm.PutCString (" = ");
35         strm.PutCString (m_current_value ? "true" : "false");
36     }
37 }
38 
39 Error
40 OptionValueBoolean::SetValueFromCString (const char *value_cstr,
41                                          VarSetOperationType op)
42 {
43     Error error;
44     switch (op)
45     {
46     case eVarSetOperationClear:
47         Clear();
48         NotifyValueChanged();
49         break;
50 
51     case eVarSetOperationReplace:
52     case eVarSetOperationAssign:
53         {
54             bool success = false;
55             bool value = Args::StringToBoolean(value_cstr, false, &success);
56             if (success)
57             {
58                 m_value_was_set = true;
59                 m_current_value = value;
60                 NotifyValueChanged();
61             }
62             else
63             {
64                 if (value_cstr == nullptr)
65                     error.SetErrorString ("invalid boolean string value: NULL");
66                 else if (value_cstr[0] == '\0')
67                     error.SetErrorString ("invalid boolean string value <empty>");
68                 else
69                     error.SetErrorStringWithFormat ("invalid boolean string value: '%s'", value_cstr);
70             }
71         }
72         break;
73 
74     case eVarSetOperationInsertBefore:
75     case eVarSetOperationInsertAfter:
76     case eVarSetOperationRemove:
77     case eVarSetOperationAppend:
78     case eVarSetOperationInvalid:
79         error = OptionValue::SetValueFromCString (value_cstr, op);
80         break;
81     }
82     return error;
83 }
84 
85 lldb::OptionValueSP
86 OptionValueBoolean::DeepCopy () const
87 {
88     return OptionValueSP(new OptionValueBoolean(*this));
89 }
90 
91 size_t
92 OptionValueBoolean::AutoComplete (CommandInterpreter &interpreter,
93                                   const char *s,
94                                   int match_start_point,
95                                   int max_return_elements,
96                                   bool &word_complete,
97                                   StringList &matches)
98 {
99     word_complete = false;
100     matches.Clear();
101     struct StringEntry {
102         const char *string;
103         const size_t length;
104     };
105     static const StringEntry g_autocomplete_entries[] =
106     {
107         { "true" , 4 },
108         { "false", 5 },
109         { "on"   , 2 },
110         { "off"  , 3 },
111         { "yes"  , 3 },
112         { "no"   , 2 },
113         { "1"    , 1 },
114         { "0"    , 1 },
115     };
116     const size_t k_num_autocomplete_entries = llvm::array_lengthof(g_autocomplete_entries);
117 
118     if (s && s[0])
119     {
120         const size_t s_len = strlen(s);
121         for (size_t i=0; i<k_num_autocomplete_entries; ++i)
122         {
123             if (s_len <= g_autocomplete_entries[i].length)
124                 if (::strncasecmp(s, g_autocomplete_entries[i].string, s_len) == 0)
125                     matches.AppendString(g_autocomplete_entries[i].string);
126         }
127     }
128     else
129     {
130         // only suggest "true" or "false" by default
131         for (size_t i=0; i<2; ++i)
132             matches.AppendString(g_autocomplete_entries[i].string);
133     }
134     return matches.GetSize();
135 }
136 
137 
138 
139