hanchenye-llvm-project/lldb/source/API/SBBlock.cpp

//===-- SBBlock.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/API/SBBlock.h"
#include "lldb/API/SBAddress.h"
#include "lldb/API/SBFileSpec.h"
#include "lldb/API/SBFrame.h"
#include "lldb/API/SBStream.h"
#include "lldb/API/SBValue.h"
#include "lldb/Core/AddressRange.h"
#include "lldb/Core/Log.h"
#include "lldb/Core/ValueObjectVariable.h"
#include "lldb/Symbol/Block.h"
#include "lldb/Symbol/Function.h"
#include "lldb/Symbol/SymbolContext.h"
#include "lldb/Symbol/VariableList.h"
#include "lldb/Target/StackFrame.h"
#include "lldb/Target/Target.h"

using namespace lldb;
using namespace lldb_private;


SBBlock::SBBlock () :
    m_opaque_ptr (NULL)
{
}

SBBlock::SBBlock (lldb_private::Block *lldb_object_ptr) :
    m_opaque_ptr (lldb_object_ptr)
{
}

SBBlock::SBBlock(const SBBlock &rhs) :
    m_opaque_ptr (rhs.m_opaque_ptr)
{
}

const SBBlock &
SBBlock::operator = (const SBBlock &rhs)
{
    m_opaque_ptr = rhs.m_opaque_ptr;
    return *this;
}

SBBlock::~SBBlock ()
{
    m_opaque_ptr = NULL;
}

bool
SBBlock::IsValid () const
{
    return m_opaque_ptr != NULL;
}

bool
SBBlock::IsInlined () const
{
    if (m_opaque_ptr)
        return m_opaque_ptr->GetInlinedFunctionInfo () != NULL;
    return false;
}

const char *
SBBlock::GetInlinedName () const
{
    if (m_opaque_ptr)
    {
        const InlineFunctionInfo* inlined_info = m_opaque_ptr->GetInlinedFunctionInfo ();
        if (inlined_info)
            return inlined_info->GetName().AsCString (NULL);
    }
    return NULL;
}

SBFileSpec
SBBlock::GetInlinedCallSiteFile () const
{
    SBFileSpec sb_file;
    if (m_opaque_ptr)
    {
        const InlineFunctionInfo* inlined_info = m_opaque_ptr->GetInlinedFunctionInfo ();
        if (inlined_info)
            sb_file.SetFileSpec (inlined_info->GetCallSite().GetFile());
    }
    return sb_file;
}

uint32_t
SBBlock::GetInlinedCallSiteLine () const
{
    if (m_opaque_ptr)
    {
        const InlineFunctionInfo* inlined_info = m_opaque_ptr->GetInlinedFunctionInfo ();
        if (inlined_info)
            return inlined_info->GetCallSite().GetLine();
    }
    return 0;
}

uint32_t
SBBlock::GetInlinedCallSiteColumn () const
{
    if (m_opaque_ptr)
    {
        const InlineFunctionInfo* inlined_info = m_opaque_ptr->GetInlinedFunctionInfo ();
        if (inlined_info)
            return inlined_info->GetCallSite().GetColumn();
    }
    return 0;
}

void
SBBlock::AppendVariables (bool can_create, bool get_parent_variables, lldb_private::VariableList *var_list)
{
    if (IsValid())
    {
        bool show_inline = true;
        m_opaque_ptr->AppendVariables (can_create, get_parent_variables, show_inline, var_list);
    }
}

SBBlock
SBBlock::GetParent ()
{
    SBBlock sb_block;
    if (m_opaque_ptr)
        sb_block.m_opaque_ptr = m_opaque_ptr->GetParent();
    return sb_block;
}

lldb::SBBlock
SBBlock::GetContainingInlinedBlock  ()
{
    SBBlock sb_block;
    if (m_opaque_ptr)
        sb_block.m_opaque_ptr = m_opaque_ptr->GetContainingInlinedBlock ();
    return sb_block;
}

SBBlock
SBBlock::GetSibling ()
{
    SBBlock sb_block;
    if (m_opaque_ptr)
        sb_block.m_opaque_ptr = m_opaque_ptr->GetSibling();
    return sb_block;
}

SBBlock
SBBlock::GetFirstChild ()
{
    SBBlock sb_block;
    if (m_opaque_ptr)
        sb_block.m_opaque_ptr = m_opaque_ptr->GetFirstChild();
    return sb_block;
}

lldb_private::Block *
SBBlock::GetPtr ()
{
    return m_opaque_ptr;
}

void
SBBlock::SetPtr (lldb_private::Block *block)
{
    m_opaque_ptr = block;
}

bool
SBBlock::GetDescription (SBStream &description)
{
    Stream &strm = description.ref();

    if (m_opaque_ptr)
    {
        lldb::user_id_t id = m_opaque_ptr->GetID();
        strm.Printf ("Block: {id: %llu} ", id);
        if (IsInlined())
        {
            strm.Printf (" (inlined, '%s') ", GetInlinedName());
        }
        lldb_private::SymbolContext sc;
        m_opaque_ptr->CalculateSymbolContext (&sc);
        if (sc.function)
        {
            m_opaque_ptr->DumpAddressRanges (&strm,
                                             sc.function->GetAddressRange().GetBaseAddress().GetFileAddress());
        }
    }
    else
        strm.PutCString ("No value");
    
    return true;
}

uint32_t
SBBlock::GetNumRanges ()
{
    if (m_opaque_ptr)
        return m_opaque_ptr->GetNumRanges();
    return 0;
}

lldb::SBAddress
SBBlock::GetRangeStartAddress (uint32_t idx)
{
    lldb::SBAddress sb_addr;
    if (m_opaque_ptr)
    {
        AddressRange range;
        if (m_opaque_ptr->GetRangeAtIndex(idx, range))
        {
            sb_addr.ref() = range.GetBaseAddress();
        }
    }
    return sb_addr;
}

lldb::SBAddress
SBBlock::GetRangeEndAddress (uint32_t idx)
{
    lldb::SBAddress sb_addr;
    if (m_opaque_ptr)
    {
        AddressRange range;
        if (m_opaque_ptr->GetRangeAtIndex(idx, range))
        {
            sb_addr.ref() = range.GetBaseAddress();
            sb_addr.ref().Slide(range.GetByteSize());
        }
    }
    return sb_addr;
}

uint32_t
SBBlock::GetRangeIndexForBlockAddress (lldb::SBAddress block_addr)
{
    if (m_opaque_ptr && block_addr.IsValid())
    {
        return m_opaque_ptr->GetRangeIndexContainingAddress (block_addr.ref());
    }

    return UINT32_MAX;
}


lldb::SBValueList
SBBlock::GetVariables (lldb::SBFrame& frame,
                       bool arguments,
                       bool locals,
                       bool statics,
                       lldb::DynamicValueType use_dynamic)
{
    Block *block = GetPtr();
    SBValueList value_list;
    if (block)
    {
        StackFrameSP frame_sp(frame.GetFrameSP());
        VariableListSP variable_list_sp (block->GetBlockVariableList (true));

        if (variable_list_sp)
        {
            const size_t num_variables = variable_list_sp->GetSize();
            if (num_variables)
            {
                for (size_t i = 0; i < num_variables; ++i)
                {
                    VariableSP variable_sp (variable_list_sp->GetVariableAtIndex(i));
                    if (variable_sp)
                    {
                        bool add_variable = false;
                        switch (variable_sp->GetScope())
                        {
                            case eValueTypeVariableGlobal:
                            case eValueTypeVariableStatic:
                                add_variable = statics;
                                break;
                                
                            case eValueTypeVariableArgument:
                                add_variable = arguments;
                                break;
                                
                            case eValueTypeVariableLocal:
                                add_variable = locals;
                                break;
                                
                            default:
                                break;
                        }
                        if (add_variable)
                        {
                            if (frame_sp)
                            {
                                lldb::ValueObjectSP valobj_sp(frame_sp->GetValueObjectForFrameVariable (variable_sp,eNoDynamicValues));
                                SBValue value_sb;
                                value_sb.SetSP(valobj_sp, use_dynamic);
                                value_list.Append (value_sb);
                            }
                        }
                    }
                }
            }
        }        
    }
    return value_list;
}

lldb::SBValueList
SBBlock::GetVariables (lldb::SBTarget& target,
                       bool arguments,
                       bool locals,
                       bool statics)
{
    Block *block = GetPtr();
    
    SBValueList value_list;
    if (block)
    {
        TargetSP target_sp(target.GetSP());
        
        VariableListSP variable_list_sp (block->GetBlockVariableList (true));
        
        if (variable_list_sp)
        {
            const size_t num_variables = variable_list_sp->GetSize();
            if (num_variables)
            {
                for (size_t i = 0; i < num_variables; ++i)
                {
                    VariableSP variable_sp (variable_list_sp->GetVariableAtIndex(i));
                    if (variable_sp)
                    {
                        bool add_variable = false;
                        switch (variable_sp->GetScope())
                        {
                            case eValueTypeVariableGlobal:
                            case eValueTypeVariableStatic:
                                add_variable = statics;
                                break;
                                
                            case eValueTypeVariableArgument:
                                add_variable = arguments;
                                break;
                                
                            case eValueTypeVariableLocal:
                                add_variable = locals;
                                break;
                                
                            default:
                                break;
                        }
                        if (add_variable)
                        {
                            if (target_sp)
                                value_list.Append (ValueObjectVariable::Create (target_sp.get(), variable_sp));
                        }
                    }
                }
            }
        }
    }        
    return value_list;
}