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//===-- ClangExpressionVariable.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/Expression/ClangExpressionVariable.h"
// C Includes
// C++ Includes
// Other libraries and framework includes
// Project includes
#include "clang/AST/ASTContext.h"
#include "lldb/Core/ConstString.h"
#include "lldb/Core/DataExtractor.h"
#include "lldb/Core/Stream.h"
#include "lldb/Core/Value.h"
#include "lldb/Core/ValueObjectConstResult.h"
#include "lldb/Target/ExecutionContext.h"
#include "lldb/Target/Process.h"
using namespace lldb_private;
using namespace clang;
ClangExpressionVariable::ClangExpressionVariable() :
m_name(),
m_user_type (TypeFromUser(NULL, NULL)),
m_store (NULL),
m_register_info (NULL),
m_index (0),
m_parser_vars(),
m_jit_vars (),
m_data_sp ()
{
}
void
ClangExpressionVariable::DisableDataVars()
{
m_data_sp.reset();
}
ClangExpressionVariable::ClangExpressionVariable(const ClangExpressionVariable &rhs) :
m_name(rhs.m_name),
m_user_type(rhs.m_user_type),
m_store(rhs.m_store),
m_register_info(rhs.m_register_info),
m_index(rhs.m_index)
{
if (rhs.m_parser_vars.get())
{
// TODO: Sean, can m_parser_vars be a shared pointer??? We are copy
// constructing it here. That is ok if we need to, but do we really
// need to?
m_parser_vars.reset(new struct ParserVars);
*m_parser_vars.get() = *rhs.m_parser_vars.get();
}
if (rhs.m_jit_vars.get())
{
// TODO: Sean, can m_jit_vars be a shared pointer??? We are copy
// constructing it here. That is ok if we need to, but do we really
// need to?
m_jit_vars.reset(new struct JITVars);
*m_jit_vars.get() = *rhs.m_jit_vars.get();
}
if (rhs.m_data_sp)
{
// TODO: Sean, does m_data_sp need to be copy constructed? Or can it
// shared the data?
m_data_sp.reset(new DataBufferHeap (rhs.m_data_sp->GetBytes(),
rhs.m_data_sp->GetByteSize()));
}
}
bool
ClangExpressionVariable::PointValueAtData(Value &value, ExecutionContext *exe_ctx)
{
if (m_data_sp.get() == NULL)
return false;
value.SetContext(Value::eContextTypeClangType, m_user_type.GetOpaqueQualType());
value.SetValueType(Value::eValueTypeHostAddress);
value.GetScalar() = (uintptr_t)m_data_sp->GetBytes();
clang::ASTContext *ast_context = m_user_type.GetASTContext();
if (exe_ctx)
value.ResolveValue (exe_ctx, ast_context);
return true;
}
void
ClangExpressionVariable::EnableDataVars()
{
if (!m_data_sp.get())
m_data_sp.reset(new DataBufferHeap);
}
lldb::ValueObjectSP
ClangExpressionVariable::GetExpressionResult (ExecutionContext *exe_ctx)
{
lldb::ValueObjectSP result_sp;
if (m_data_sp)
{
Target * target = NULL;
Process *process = NULL;
if (exe_ctx)
{
target = exe_ctx->target;
process = exe_ctx->process;
}
Value value;
if (PointValueAtData(value, exe_ctx))
{
lldb::ByteOrder byte_order = lldb::eByteOrderHost;
uint32_t addr_byte_size = 4;
if (process)
{
byte_order = process->GetByteOrder();
addr_byte_size = process->GetAddressByteSize();
}
result_sp.reset (new ValueObjectConstResult (m_user_type.GetASTContext(),
m_user_type.GetOpaqueQualType(),
m_name,
m_data_sp,// TODO: sean can you get this to be valid?
byte_order,
addr_byte_size));
}
}
return result_sp;
}
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