1 //===-- ValueObjectDynamicValue.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 
11 #include "lldb/Core/ValueObjectCast.h"
12 
13 // C Includes
14 // C++ Includes
15 // Other libraries and framework includes
16 // Project includes
17 #include "lldb/Core/Log.h"
18 #include "lldb/Core/Module.h"
19 #include "lldb/Core/ValueObjectList.h"
20 #include "lldb/Core/Value.h"
21 #include "lldb/Core/ValueObject.h"
22 
23 #include "lldb/Symbol/CompilerType.h"
24 #include "lldb/Symbol/ObjectFile.h"
25 #include "lldb/Symbol/SymbolContext.h"
26 #include "lldb/Symbol/Type.h"
27 #include "lldb/Symbol/Variable.h"
28 
29 #include "lldb/Target/ExecutionContext.h"
30 #include "lldb/Target/Process.h"
31 #include "lldb/Target/RegisterContext.h"
32 #include "lldb/Target/Target.h"
33 #include "lldb/Target/Thread.h"
34 
35 using namespace lldb_private;
36 
37 lldb::ValueObjectSP
38 ValueObjectCast::Create (ValueObject &parent,
39                          const ConstString &name,
40                          const CompilerType &cast_type)
41 {
42     ValueObjectCast *cast_valobj_ptr = new ValueObjectCast (parent, name, cast_type);
43     return cast_valobj_ptr->GetSP();
44 }
45 
46 ValueObjectCast::ValueObjectCast
47 (
48     ValueObject &parent,
49     const ConstString &name,
50     const CompilerType &cast_type
51 ) :
52     ValueObject(parent),
53     m_cast_type (cast_type)
54 {
55     SetName (name);
56     //m_value.SetContext (Value::eContextTypeClangType, cast_type.GetOpaqueQualType());
57     m_value.SetCompilerType (cast_type);
58 }
59 
60 ValueObjectCast::~ValueObjectCast()
61 {
62 }
63 
64 CompilerType
65 ValueObjectCast::GetCompilerTypeImpl ()
66 {
67     return m_cast_type;
68 }
69 
70 size_t
71 ValueObjectCast::CalculateNumChildren()
72 {
73     return GetCompilerType().GetNumChildren (true);
74 }
75 
76 uint64_t
77 ValueObjectCast::GetByteSize()
78 {
79     return m_value.GetValueByteSize(NULL);
80 }
81 
82 lldb::ValueType
83 ValueObjectCast::GetValueType() const
84 {
85     // Let our parent answer global, local, argument, etc...
86     return m_parent->GetValueType();
87 }
88 
89 bool
90 ValueObjectCast::UpdateValue ()
91 {
92     SetValueIsValid (false);
93     m_error.Clear();
94 
95     if (m_parent->UpdateValueIfNeeded(false))
96     {
97         Value old_value(m_value);
98         m_update_point.SetUpdated();
99         m_value = m_parent->GetValue();
100         CompilerType compiler_type (GetCompilerType());
101         //m_value.SetContext (Value::eContextTypeClangType, compiler_type);
102         m_value.SetCompilerType (compiler_type);
103         SetAddressTypeOfChildren(m_parent->GetAddressTypeOfChildren());
104         if (!CanProvideValue())
105         {
106             // this value object represents an aggregate type whose
107             // children have values, but this object does not. So we
108             // say we are changed if our location has changed.
109             SetValueDidChange (m_value.GetValueType() != old_value.GetValueType() || m_value.GetScalar() != old_value.GetScalar());
110         }
111         ExecutionContext exe_ctx (GetExecutionContextRef());
112         m_error = m_value.GetValueAsData(&exe_ctx, m_data, 0, GetModule().get());
113         SetValueDidChange (m_parent->GetValueDidChange());
114         return true;
115     }
116 
117     // The dynamic value failed to get an error, pass the error along
118     if (m_error.Success() && m_parent->GetError().Fail())
119         m_error = m_parent->GetError();
120     SetValueIsValid (false);
121     return false;
122 }
123 
124 bool
125 ValueObjectCast::IsInScope ()
126 {
127     return m_parent->IsInScope();
128 }
129