lldb/ValueObject/ValueObjectCast.h

0001 //===-- ValueObjectCast.h ---------------------------------------*- C++ -*-===//
0002 //
0003 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
0004 // See https://llvm.org/LICENSE.txt for license information.
0005 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
0006 //
0007 //===----------------------------------------------------------------------===//
0008
0009 #ifndef LLDB_VALUEOBJECT_VALUEOBJECTCAST_H
0010 #define LLDB_VALUEOBJECT_VALUEOBJECTCAST_H
0011
0012 #include "lldb/Symbol/CompilerType.h"
0013 #include "lldb/ValueObject/ValueObject.h"
0014 #include "lldb/lldb-defines.h"
0015 #include "lldb/lldb-enumerations.h"
0016 #include "lldb/lldb-forward.h"
0017
0018 #include <cstddef>
0019 #include <cstdint>
0020 #include <optional>
0021
0022 namespace lldb_private {
0023 class ConstString;
0024
0025 /// A ValueObject that represents a given value represented as a different type.
0026 class ValueObjectCast : public ValueObject {
0027 public:
0028   ~ValueObjectCast() override;
0029
0030   static lldb::ValueObjectSP Create(ValueObject &parent, ConstString name,
0031                                     const CompilerType &cast_type);
0032
0033   std::optional<uint64_t> GetByteSize() override;
0034
0035   llvm::Expected<uint32_t> CalculateNumChildren(uint32_t max) override;
0036
0037   lldb::ValueType GetValueType() const override;
0038
0039   bool IsInScope() override;
0040
0041   ValueObject *GetParent() override {
0042     return ((m_parent != nullptr) ? m_parent->GetParent() : nullptr);
0043   }
0044
0045   const ValueObject *GetParent() const override {
0046     return ((m_parent != nullptr) ? m_parent->GetParent() : nullptr);
0047   }
0048
0049 protected:
0050   ValueObjectCast(ValueObject &parent, ConstString name,
0051                   const CompilerType &cast_type);
0052
0053   bool UpdateValue() override;
0054
0055   CompilerType GetCompilerTypeImpl() override;
0056
0057   CompilerType m_cast_type;
0058
0059 private:
0060   ValueObjectCast(const ValueObjectCast &) = delete;
0061   const ValueObjectCast &operator=(const ValueObjectCast &) = delete;
0062 };
0063
0064 } // namespace lldb_private
0065
0066 #endif // LLDB_VALUEOBJECT_VALUEOBJECTCAST_H