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 26 namespace lldb_private { 27 class DataExtractor; 28 class Declaration; 29 class Status; 30 31 // A ValueObject that represents memory at a given address, viewed as some 32 // set lldb type. 33 class ValueObjectDynamicValue : public ValueObject { 34 public: 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 IsDynamic()51 bool IsDynamic() override { return true; } 52 IsBaseClass()53 bool IsBaseClass() override { 54 if (m_parent) 55 return m_parent->IsBaseClass(); 56 return false; 57 } 58 GetIsConstant()59 bool GetIsConstant() const override { return false; } 60 GetParent()61 ValueObject *GetParent() override { 62 return ((m_parent != nullptr) ? m_parent->GetParent() : nullptr); 63 } 64 GetParent()65 const ValueObject *GetParent() const override { 66 return ((m_parent != nullptr) ? m_parent->GetParent() : nullptr); 67 } 68 GetStaticValue()69 lldb::ValueObjectSP GetStaticValue() override { return m_parent->GetSP(); } 70 SetOwningSP(lldb::ValueObjectSP & owning_sp)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 GetVariable()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; 102 103 protected: 104 bool UpdateValue() override; 105 CanUpdateWithInvalidExecutionContext()106 LazyBool CanUpdateWithInvalidExecutionContext() override { 107 return eLazyBoolYes; 108 } 109 GetDynamicValueTypeImpl()110 lldb::DynamicValueType GetDynamicValueTypeImpl() override { 111 return m_use_dynamic; 112 } 113 HasDynamicValueTypeInfo()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; 123 124 private: 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