1//===-- ValueObjectDynamicValue.h -------------------------------*- C++ -*-===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9#ifndef LLDB_CORE_VALUEOBJECTDYNAMICVALUE_H
10#define LLDB_CORE_VALUEOBJECTDYNAMICVALUE_H
11
12#include "lldb/Core/Address.h"
13#include "lldb/Core/ValueObject.h"
14#include "lldb/Symbol/CompilerType.h"
15#include "lldb/Symbol/Type.h"
16#include "lldb/Utility/ConstString.h"
17#include "lldb/lldb-defines.h"
18#include "lldb/lldb-enumerations.h"
19#include "lldb/lldb-forward.h"
20#include "lldb/lldb-private-enumerations.h"
21
22#include <assert.h>
23#include <stddef.h>
24#include <stdint.h>
25
26namespace lldb_private {
27class DataExtractor;
28class Declaration;
29class Status;
30
31/// A ValueObject that represents memory at a given address, viewed as some
32/// set lldb type.
33class ValueObjectDynamicValue : public ValueObject {
34public:
35 ~ValueObjectDynamicValue() override;
36
37 llvm::Optional<uint64_t> GetByteSize() override;
38
39 ConstString GetTypeName() override;
40
41 ConstString GetQualifiedTypeName() override;
42
43 ConstString GetDisplayTypeName() override;
44
45 size_t CalculateNumChildren(uint32_t max) override;
46
47 lldb::ValueType GetValueType() const override;
48
49 bool IsInScope() override;
50
51 bool IsDynamic() override { return true; }
52
53 bool IsBaseClass() override {
54 if (m_parent)
55 return m_parent->IsBaseClass();
56 return false;
57 }
58
59 bool GetIsConstant() const override { return false; }
60
61 ValueObject *GetParent() override {
62 return ((m_parent != nullptr) ? m_parent->GetParent() : nullptr);
63 }
64
65 const ValueObject *GetParent() const override {
66 return ((m_parent != nullptr) ? m_parent->GetParent() : nullptr);
67 }
68
69 lldb::ValueObjectSP GetStaticValue() override { return m_parent->GetSP(); }
70
71 void SetOwningSP(lldb::ValueObjectSP &owning_sp) {
72 if (m_owning_valobj_sp == owning_sp)
73 return;
74
75 assert(m_owning_valobj_sp.get() == nullptr);
76 m_owning_valobj_sp = owning_sp;
77 }
78
79 bool SetValueFromCString(const char *value_str, Status &error) override;
80
81 bool SetData(DataExtractor &data, Status &error) override;
82
83 TypeImpl GetTypeImpl() override;
84
85 lldb::VariableSP GetVariable() override {
86 return m_parent ? m_parent->GetVariable() : nullptr;
87 }
88
89 lldb::LanguageType GetPreferredDisplayLanguage() override;
90
91 void SetPreferredDisplayLanguage(lldb::LanguageType);
92
93 bool IsSyntheticChildrenGenerated() override;
94
95 void SetSyntheticChildrenGenerated(bool b) override;
96
97 bool GetDeclaration(Declaration &decl) override;
98
99 uint64_t GetLanguageFlags() override;
100
101 void SetLanguageFlags(uint64_t flags) override;
102
103protected:
104 bool UpdateValue() override;
105
106 LazyBool CanUpdateWithInvalidExecutionContext() override {
107 return eLazyBoolYes;
108 }
109
110 lldb::DynamicValueType GetDynamicValueTypeImpl() override {
111 return m_use_dynamic;
112 }
113
114 bool HasDynamicValueTypeInfo() override { return true; }
115
116 CompilerType GetCompilerTypeImpl() override;
117
118 Address m_address; ///< The variable that this value object is based upon
119 TypeAndOrName m_dynamic_type_info; // We can have a type_sp or just a name
120 lldb::ValueObjectSP m_owning_valobj_sp;
121 lldb::DynamicValueType m_use_dynamic;
122 TypeImpl m_type_impl;
123
124private:
125 friend class ValueObject;
126 friend class ValueObjectConstResult;
127 ValueObjectDynamicValue(ValueObject &parent,
128 lldb::DynamicValueType use_dynamic);
129
130 ValueObjectDynamicValue(const ValueObjectDynamicValue &) = delete;
131 const ValueObjectDynamicValue &
132 operator=(const ValueObjectDynamicValue &) = delete;
133};
134
135} // namespace lldb_private
136
137#endif // LLDB_CORE_VALUEOBJECTDYNAMICVALUE_H
138