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