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/ClangASTType.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/LanguageRuntime.h"
31 #include "lldb/Target/Process.h"
32 #include "lldb/Target/RegisterContext.h"
33 #include "lldb/Target/Target.h"
34 #include "lldb/Target/Thread.h"
35 
36 using namespace lldb_private;
37 
38 lldb::ValueObjectSP
39 ValueObjectCast::Create (ValueObject &parent,
40                          const ConstString &name,
41                          const ClangASTType &cast_type)
42 {
43     ValueObjectCast *cast_valobj_ptr = new ValueObjectCast (parent, name, cast_type);
44     return cast_valobj_ptr->GetSP();
45 }
46 
47 ValueObjectCast::ValueObjectCast
48 (
49     ValueObject &parent,
50     const ConstString &name,
51     const ClangASTType &cast_type
52 ) :
53     ValueObject(parent),
54     m_cast_type (cast_type)
55 {
56     SetName (name);
57     m_value.SetContext (Value::eContextTypeClangType, cast_type.GetOpaqueQualType());
58 }
59 
60 ValueObjectCast::~ValueObjectCast()
61 {
62 }
63 
64 lldb::clang_type_t
65 ValueObjectCast::GetClangTypeImpl ()
66 {
67     return m_cast_type.GetOpaqueQualType();
68 }
69 
70 size_t
71 ValueObjectCast::CalculateNumChildren()
72 {
73     return ClangASTContext::GetNumChildren (GetClangAST (), GetClangType(), true);
74 }
75 
76 clang::ASTContext *
77 ValueObjectCast::GetClangASTImpl ()
78 {
79     return m_cast_type.GetASTContext();
80 }
81 
82 uint64_t
83 ValueObjectCast::GetByteSize()
84 {
85     return m_value.GetValueByteSize(GetClangAST(), NULL);
86 }
87 
88 lldb::ValueType
89 ValueObjectCast::GetValueType() const
90 {
91     // Let our parent answer global, local, argument, etc...
92     return m_parent->GetValueType();
93 }
94 
95 bool
96 ValueObjectCast::UpdateValue ()
97 {
98     SetValueIsValid (false);
99     m_error.Clear();
100 
101     if (m_parent->UpdateValueIfNeeded(false))
102     {
103         Value old_value(m_value);
104         m_update_point.SetUpdated();
105         m_value = m_parent->GetValue();
106         m_value.SetContext (Value::eContextTypeClangType, GetClangType());
107         SetAddressTypeOfChildren(m_parent->GetAddressTypeOfChildren());
108         if (ClangASTContext::IsAggregateType (GetClangType()))
109         {
110             // this value object represents an aggregate type whose
111             // children have values, but this object does not. So we
112             // say we are changed if our location has changed.
113             SetValueDidChange (m_value.GetValueType() != old_value.GetValueType() || m_value.GetScalar() != old_value.GetScalar());
114         }
115         ExecutionContext exe_ctx (GetExecutionContextRef());
116         m_error = m_value.GetValueAsData(&exe_ctx, GetClangAST(), m_data, 0, GetModule().get());
117         SetValueDidChange (m_parent->GetValueDidChange());
118         return true;
119     }
120 
121     // The dynamic value failed to get an error, pass the error along
122     if (m_error.Success() && m_parent->GetError().Fail())
123         m_error = m_parent->GetError();
124     SetValueIsValid (false);
125     return false;
126 }
127 
128 bool
129 ValueObjectCast::IsInScope ()
130 {
131     return m_parent->IsInScope();
132 }
133