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//===-- NSArray.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/lldb-python.h"
#include "lldb/DataFormatters/CXXFormatterFunctions.h"
#include "lldb/Core/DataBufferHeap.h"
#include "lldb/Core/Error.h"
#include "lldb/Core/Stream.h"
#include "lldb/Core/ValueObject.h"
#include "lldb/Core/ValueObjectConstResult.h"
#include "lldb/Host/Endian.h"
#include "lldb/Symbol/ClangASTContext.h"
#include "lldb/Target/ObjCLanguageRuntime.h"
#include "lldb/Target/Target.h"
using namespace lldb;
using namespace lldb_private;
using namespace lldb_private::formatters;
bool
lldb_private::formatters::NSArraySummaryProvider (ValueObject& valobj, Stream& stream)
{
ProcessSP process_sp = valobj.GetProcessSP();
if (!process_sp)
return false;
ObjCLanguageRuntime* runtime = (ObjCLanguageRuntime*)process_sp->GetLanguageRuntime(lldb::eLanguageTypeObjC);
if (!runtime)
return false;
ObjCLanguageRuntime::ClassDescriptorSP descriptor(runtime->GetClassDescriptor(valobj));
if (!descriptor.get() || !descriptor->IsValid())
return false;
uint32_t ptr_size = process_sp->GetAddressByteSize();
lldb::addr_t valobj_addr = valobj.GetValueAsUnsigned(0);
if (!valobj_addr)
return false;
uint64_t value = 0;
const char* class_name = descriptor->GetClassName().GetCString();
if (!class_name || !*class_name)
return false;
if (!strcmp(class_name,"__NSArrayI"))
{
Error error;
value = process_sp->ReadUnsignedIntegerFromMemory(valobj_addr + ptr_size, ptr_size, 0, error);
if (error.Fail())
return false;
}
else if (!strcmp(class_name,"__NSArrayM"))
{
Error error;
value = process_sp->ReadUnsignedIntegerFromMemory(valobj_addr + ptr_size, ptr_size, 0, error);
if (error.Fail())
return false;
}
else if (!strcmp(class_name,"__NSCFArray"))
{
Error error;
value = process_sp->ReadUnsignedIntegerFromMemory(valobj_addr + 2 * ptr_size, ptr_size, 0, error);
if (error.Fail())
return false;
}
else
{
if (!ExtractValueFromObjCExpression(valobj, "int", "count", value))
return false;
}
stream.Printf("@\"%" PRIu64 " object%s\"",
value,
value == 1 ? "" : "s");
return true;
}
lldb_private::formatters::NSArrayMSyntheticFrontEnd::NSArrayMSyntheticFrontEnd (lldb::ValueObjectSP valobj_sp) :
SyntheticChildrenFrontEnd(*valobj_sp.get()),
m_exe_ctx_ref(),
m_ptr_size(8),
m_data_32(NULL),
m_data_64(NULL)
{
if (valobj_sp)
{
clang::ASTContext *ast = valobj_sp->GetClangType().GetASTContext();
if (ast)
m_id_type = ClangASTType(ast, ast->ObjCBuiltinIdTy);
}
}
size_t
lldb_private::formatters::NSArrayMSyntheticFrontEnd::CalculateNumChildren ()
{
if (m_data_32)
return m_data_32->_used;
if (m_data_64)
return m_data_64->_used;
return 0;
}
lldb::ValueObjectSP
lldb_private::formatters::NSArrayMSyntheticFrontEnd::GetChildAtIndex (size_t idx)
{
if (!m_data_32 && !m_data_64)
return lldb::ValueObjectSP();
if (idx >= CalculateNumChildren())
return lldb::ValueObjectSP();
lldb::addr_t object_at_idx = (m_data_32 ? m_data_32->_data : m_data_64->_data);
size_t pyhs_idx = idx;
pyhs_idx += (m_data_32 ? m_data_32->offset : m_data_64->offset);
if ((m_data_32 ? m_data_32->_size : m_data_64->_size) <= pyhs_idx)
pyhs_idx -= (m_data_32 ? m_data_32->_size : m_data_64->_size);
object_at_idx += (pyhs_idx * m_ptr_size);
StreamString idx_name;
idx_name.Printf("[%zu]",idx);
lldb::ValueObjectSP retval_sp = ValueObject::CreateValueObjectFromAddress(idx_name.GetData(),
object_at_idx,
m_exe_ctx_ref,
m_id_type);
m_children.push_back(retval_sp);
return retval_sp;
}
bool
lldb_private::formatters::NSArrayMSyntheticFrontEnd::Update()
{
m_children.clear();
ValueObjectSP valobj_sp = m_backend.GetSP();
m_ptr_size = 0;
delete m_data_32;
m_data_32 = NULL;
delete m_data_64;
m_data_64 = NULL;
if (!valobj_sp)
return false;
m_exe_ctx_ref = valobj_sp->GetExecutionContextRef();
Error error;
error.Clear();
lldb::ProcessSP process_sp(valobj_sp->GetProcessSP());
if (!process_sp)
return false;
m_ptr_size = process_sp->GetAddressByteSize();
uint64_t data_location = valobj_sp->GetValueAsUnsigned(0) + m_ptr_size;
if (m_ptr_size == 4)
{
m_data_32 = new DataDescriptor_32();
process_sp->ReadMemory (data_location, m_data_32, sizeof(DataDescriptor_32), error);
}
else
{
m_data_64 = new DataDescriptor_64();
process_sp->ReadMemory (data_location, m_data_64, sizeof(DataDescriptor_64), error);
}
if (error.Fail())
return false;
return false;
}
bool
lldb_private::formatters::NSArrayMSyntheticFrontEnd::MightHaveChildren ()
{
return true;
}
size_t
lldb_private::formatters::NSArrayMSyntheticFrontEnd::GetIndexOfChildWithName (const ConstString &name)
{
if (!m_data_32 && !m_data_64)
return UINT32_MAX;
const char* item_name = name.GetCString();
uint32_t idx = ExtractIndexFromString(item_name);
if (idx < UINT32_MAX && idx >= CalculateNumChildren())
return UINT32_MAX;
return idx;
}
lldb_private::formatters::NSArrayMSyntheticFrontEnd::~NSArrayMSyntheticFrontEnd ()
{
delete m_data_32;
m_data_32 = NULL;
delete m_data_64;
m_data_64 = NULL;
}
lldb_private::formatters::NSArrayISyntheticFrontEnd::NSArrayISyntheticFrontEnd (lldb::ValueObjectSP valobj_sp) :
SyntheticChildrenFrontEnd (*valobj_sp.get()),
m_exe_ctx_ref (),
m_ptr_size (8),
m_items (0),
m_data_ptr (0)
{
if (valobj_sp)
{
clang::ASTContext *ast = valobj_sp->GetClangType().GetASTContext();
if (ast)
m_id_type = ClangASTType(ast, ast->ObjCBuiltinIdTy);
}
}
lldb_private::formatters::NSArrayISyntheticFrontEnd::~NSArrayISyntheticFrontEnd ()
{
}
size_t
lldb_private::formatters::NSArrayISyntheticFrontEnd::GetIndexOfChildWithName (const ConstString &name)
{
const char* item_name = name.GetCString();
uint32_t idx = ExtractIndexFromString(item_name);
if (idx < UINT32_MAX && idx >= CalculateNumChildren())
return UINT32_MAX;
return idx;
}
size_t
lldb_private::formatters::NSArrayISyntheticFrontEnd::CalculateNumChildren ()
{
return m_items;
}
bool
lldb_private::formatters::NSArrayISyntheticFrontEnd::Update()
{
m_ptr_size = 0;
m_items = 0;
m_data_ptr = 0;
m_children.clear();
ValueObjectSP valobj_sp = m_backend.GetSP();
if (!valobj_sp)
return false;
m_exe_ctx_ref = valobj_sp->GetExecutionContextRef();
Error error;
error.Clear();
lldb::ProcessSP process_sp(valobj_sp->GetProcessSP());
if (!process_sp)
return false;
m_ptr_size = process_sp->GetAddressByteSize();
uint64_t data_location = valobj_sp->GetValueAsUnsigned(0) + m_ptr_size;
m_items = process_sp->ReadPointerFromMemory(data_location, error);
if (error.Fail())
return false;
m_data_ptr = data_location+m_ptr_size;
return false;
}
bool
lldb_private::formatters::NSArrayISyntheticFrontEnd::MightHaveChildren ()
{
return true;
}
lldb::ValueObjectSP
lldb_private::formatters::NSArrayISyntheticFrontEnd::GetChildAtIndex (size_t idx)
{
if (idx >= CalculateNumChildren())
return lldb::ValueObjectSP();
lldb::addr_t object_at_idx = m_data_ptr;
object_at_idx += (idx * m_ptr_size);
ProcessSP process_sp = m_exe_ctx_ref.GetProcessSP();
if (!process_sp)
return lldb::ValueObjectSP();
Error error;
if (error.Fail())
return lldb::ValueObjectSP();
StreamString idx_name;
idx_name.Printf("[%zu]",idx);
lldb::ValueObjectSP retval_sp = ValueObject::CreateValueObjectFromAddress(idx_name.GetData(), object_at_idx, m_exe_ctx_ref, m_id_type);
m_children.push_back(retval_sp);
return retval_sp;
}
SyntheticChildrenFrontEnd* lldb_private::formatters::NSArraySyntheticFrontEndCreator (CXXSyntheticChildren*, lldb::ValueObjectSP valobj_sp)
{
lldb::ProcessSP process_sp (valobj_sp->GetProcessSP());
if (!process_sp)
return NULL;
ObjCLanguageRuntime *runtime = (ObjCLanguageRuntime*)process_sp->GetLanguageRuntime(lldb::eLanguageTypeObjC);
if (!runtime)
return NULL;
if (!valobj_sp->IsPointerType())
{
Error error;
valobj_sp = valobj_sp->AddressOf(error);
if (error.Fail() || !valobj_sp)
return NULL;
}
ObjCLanguageRuntime::ClassDescriptorSP descriptor(runtime->GetClassDescriptor(*valobj_sp.get()));
if (!descriptor.get() || !descriptor->IsValid())
return NULL;
const char* class_name = descriptor->GetClassName().GetCString();
if (!class_name || !*class_name)
return NULL;
if (!strcmp(class_name,"__NSArrayI"))
{
return (new NSArrayISyntheticFrontEnd(valobj_sp));
}
else if (!strcmp(class_name,"__NSArrayM"))
{
return (new NSArrayMSyntheticFrontEnd(valobj_sp));
}
else
{
return (new NSArrayCodeRunningSyntheticFrontEnd(valobj_sp));
}
}
lldb_private::formatters::NSArrayCodeRunningSyntheticFrontEnd::NSArrayCodeRunningSyntheticFrontEnd (lldb::ValueObjectSP valobj_sp) :
SyntheticChildrenFrontEnd(*valobj_sp.get())
{}
size_t
lldb_private::formatters::NSArrayCodeRunningSyntheticFrontEnd::CalculateNumChildren ()
{
uint64_t count = 0;
if (ExtractValueFromObjCExpression(m_backend, "int", "count", count))
return count;
return 0;
}
lldb::ValueObjectSP
lldb_private::formatters::NSArrayCodeRunningSyntheticFrontEnd::GetChildAtIndex (size_t idx)
{
StreamString idx_name;
idx_name.Printf("[%zu]",idx);
lldb::ValueObjectSP valobj_sp = CallSelectorOnObject(m_backend,"id","objectAtIndex:",idx);
if (valobj_sp)
valobj_sp->SetName(ConstString(idx_name.GetData()));
return valobj_sp;
}
bool
lldb_private::formatters::NSArrayCodeRunningSyntheticFrontEnd::Update()
{
return false;
}
bool
lldb_private::formatters::NSArrayCodeRunningSyntheticFrontEnd::MightHaveChildren ()
{
return true;
}
size_t
lldb_private::formatters::NSArrayCodeRunningSyntheticFrontEnd::GetIndexOfChildWithName (const ConstString &name)
{
return 0;
}
lldb_private::formatters::NSArrayCodeRunningSyntheticFrontEnd::~NSArrayCodeRunningSyntheticFrontEnd ()
{}