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//===-- ValueObjectChild.cpp ------------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "lldb/Core/ValueObjectChild.h"
#include "lldb/Core/Module.h"
#include "lldb/Core/ValueObjectList.h"
#include "lldb/Symbol/ClangASTType.h"
#include "lldb/Symbol/ObjectFile.h"
#include "lldb/Symbol/SymbolContext.h"
#include "lldb/Symbol/Type.h"
#include "lldb/Symbol/Variable.h"
#include "lldb/Target/ExecutionContext.h"
#include "lldb/Target/Process.h"
#include "lldb/Target/Target.h"
using namespace lldb_private;
ValueObjectChild::ValueObjectChild
(
ValueObject &parent,
clang::ASTContext *clang_ast,
void *clang_type,
const ConstString &name,
uint32_t byte_size,
int32_t byte_offset,
uint32_t bitfield_bit_size,
uint32_t bitfield_bit_offset,
bool is_base_class,
bool is_deref_of_parent
) :
ValueObject (parent),
m_clang_ast (clang_ast),
m_clang_type (clang_type),
m_byte_size (byte_size),
m_byte_offset (byte_offset),
m_bitfield_bit_size (bitfield_bit_size),
m_bitfield_bit_offset (bitfield_bit_offset),
m_is_base_class (is_base_class),
m_is_deref_of_parent (is_deref_of_parent)
{
m_name = name;
}
ValueObjectChild::~ValueObjectChild()
{
}
lldb::ValueType
ValueObjectChild::GetValueType() const
{
return m_parent->GetValueType();
}
uint32_t
ValueObjectChild::CalculateNumChildren()
{
return ClangASTContext::GetNumChildren (GetClangAST (), m_clang_type, true);
}
ConstString
ValueObjectChild::GetTypeName()
{
if (m_type_name.IsEmpty())
{
m_type_name = ClangASTType::GetClangTypeName (GetClangType());
if (m_type_name)
{
if (m_bitfield_bit_size > 0)
{
const char *clang_type_name = m_type_name.AsCString();
if (clang_type_name)
{
std::vector<char> bitfield_type_name (strlen(clang_type_name) + 32, 0);
::snprintf (&bitfield_type_name.front(), bitfield_type_name.size(), "%s:%u", clang_type_name, m_bitfield_bit_size);
m_type_name.SetCString(&bitfield_type_name.front());
}
}
}
}
return m_type_name;
}
bool
ValueObjectChild::UpdateValue ()
{
m_error.Clear();
SetValueIsValid (false);
ValueObject* parent = m_parent;
if (parent)
{
if (parent->UpdateValueIfNeeded())
{
m_value.SetContext(Value::eContextTypeClangType, m_clang_type);
// Copy the parent scalar value and the scalar value type
m_value.GetScalar() = parent->GetValue().GetScalar();
Value::ValueType value_type = parent->GetValue().GetValueType();
m_value.SetValueType (value_type);
if (ClangASTContext::IsPointerOrReferenceType (parent->GetClangType()))
{
uint32_t offset = 0;
m_value.GetScalar() = parent->GetDataExtractor().GetPointer(&offset);
lldb::addr_t addr = m_value.GetScalar().ULongLong(LLDB_INVALID_ADDRESS);
if (addr == LLDB_INVALID_ADDRESS)
{
m_error.SetErrorString ("parent address is invalid.");
}
else if (addr == 0)
{
m_error.SetErrorString ("parent is NULL");
}
else
{
m_value.GetScalar() += m_byte_offset;
if (m_pointers_point_to_load_addrs ||
value_type == Value::eValueTypeScalar ||
value_type == Value::eValueTypeFileAddress)
m_value.SetValueType (Value::eValueTypeLoadAddress);
}
}
else
{
switch (value_type)
{
case Value::eValueTypeLoadAddress:
case Value::eValueTypeFileAddress:
case Value::eValueTypeHostAddress:
{
lldb::addr_t addr = m_value.GetScalar().ULongLong(LLDB_INVALID_ADDRESS);
if (addr == LLDB_INVALID_ADDRESS)
{
m_error.SetErrorString ("parent address is invalid.");
}
else if (addr == 0)
{
m_error.SetErrorString ("parent is NULL");
}
else
{
// Set this object's scalar value to the address of its
// value be adding its byte offset to the parent address
m_value.GetScalar() += GetByteOffset();
}
}
break;
case Value::eValueTypeScalar:
// TODO: What if this is a register value? Do we try and
// extract the child value from within the parent data?
// Probably...
default:
m_error.SetErrorString ("Parent has invalid value.");
break;
}
}
if (m_error.Success())
{
ExecutionContext exe_ctx (GetExecutionContextScope());
m_error = m_value.GetValueAsData (&exe_ctx, GetClangAST (), m_data, 0);
}
}
else
{
m_error.SetErrorStringWithFormat("Parent failed to evaluate: %s.\n", parent->GetError().AsCString());
}
}
else
{
m_error.SetErrorString("ValueObjectChild has a NULL parent ValueObject.");
}
return m_error.Success();
}
bool
ValueObjectChild::IsInScope ()
{
return m_parent->IsInScope ();
}
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