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//===-- JavaFormatterFunctions.cpp-------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// C Includes
// C++ Includes
// Other libraries and framework includes
// Project includes
#include "JavaFormatterFunctions.h"
#include "lldb/DataFormatters/FormattersHelpers.h"
#include "lldb/DataFormatters/StringPrinter.h"
#include "lldb/Symbol/JavaASTContext.h"
using namespace lldb;
using namespace lldb_private;
using namespace lldb_private::formatters;
namespace
{
class JavaArraySyntheticFrontEnd : public SyntheticChildrenFrontEnd
{
public:
JavaArraySyntheticFrontEnd(lldb::ValueObjectSP valobj_sp) :
SyntheticChildrenFrontEnd(*valobj_sp)
{
if (valobj_sp)
Update();
}
size_t
CalculateNumChildren() override
{
ValueObjectSP valobj = GetDereferencedValueObject();
if (!valobj)
return 0;
CompilerType type = valobj->GetCompilerType();
uint32_t size = JavaASTContext::CalculateArraySize(type, *valobj);
if (size == UINT32_MAX)
return 0;
return size;
}
lldb::ValueObjectSP
GetChildAtIndex(size_t idx) override
{
ValueObjectSP valobj = GetDereferencedValueObject();
if (!valobj)
return nullptr;
ProcessSP process_sp = valobj->GetProcessSP();
if (!process_sp)
return nullptr;
CompilerType type = valobj->GetCompilerType();
CompilerType element_type = type.GetArrayElementType();
lldb::addr_t address = valobj->GetAddressOf() + JavaASTContext::CalculateArrayElementOffset(type, idx);
Error error;
size_t byte_size = element_type.GetByteSize(nullptr);
DataBufferSP buffer_sp(new DataBufferHeap(byte_size, 0));
size_t bytes_read = process_sp->ReadMemory(address, buffer_sp->GetBytes(), byte_size, error);
if (error.Fail() || byte_size != bytes_read)
return nullptr;
StreamString name;
name.Printf("[%" PRIu64 "]", (uint64_t)idx);
DataExtractor data(buffer_sp, process_sp->GetByteOrder(), process_sp->GetAddressByteSize());
return CreateValueObjectFromData(name.GetData(), data, valobj->GetExecutionContextRef(),
element_type);
}
bool
Update() override
{
return false;
}
bool
MightHaveChildren() override
{
return true;
}
size_t
GetIndexOfChildWithName(const ConstString &name) override
{
return ExtractIndexFromString(name.GetCString());
}
private:
ValueObjectSP
GetDereferencedValueObject()
{
if (!m_backend.IsPointerOrReferenceType())
return m_backend.GetSP();
Error error;
return m_backend.Dereference(error);
}
};
} // end of anonymous namespace
bool
lldb_private::formatters::JavaStringSummaryProvider(ValueObject &valobj, Stream &stream, const TypeSummaryOptions &opts)
{
if (valobj.IsPointerOrReferenceType())
{
Error error;
ValueObjectSP deref = valobj.Dereference(error);
if (error.Fail())
return false;
return JavaStringSummaryProvider(*deref, stream, opts);
}
ProcessSP process_sp = valobj.GetProcessSP();
if (!process_sp)
return false;
ConstString data_name("value");
ConstString length_name("count");
ValueObjectSP length_sp = valobj.GetChildMemberWithName(length_name, true);
ValueObjectSP data_sp = valobj.GetChildMemberWithName(data_name, true);
if (!data_sp || !length_sp)
return false;
bool success = false;
uint64_t length = length_sp->GetValueAsUnsigned(0, &success);
if (!success)
return false;
if (length == 0)
{
stream.Printf("\"\"");
return true;
}
lldb::addr_t valobj_addr = data_sp->GetAddressOf();
StringPrinter::ReadStringAndDumpToStreamOptions options(valobj);
options.SetLocation(valobj_addr);
options.SetProcessSP(process_sp);
options.SetStream(&stream);
options.SetSourceSize(length);
options.SetNeedsZeroTermination(false);
options.SetLanguage(eLanguageTypeJava);
if (StringPrinter::ReadStringAndDumpToStream<StringPrinter::StringElementType::UTF16>(options))
return true;
stream.Printf("Summary Unavailable");
return true;
}
bool
lldb_private::formatters::JavaArraySummaryProvider(ValueObject &valobj, Stream &stream, const TypeSummaryOptions &options)
{
if (valobj.IsPointerOrReferenceType())
{
Error error;
ValueObjectSP deref = valobj.Dereference(error);
if (error.Fail())
return false;
return JavaArraySummaryProvider(*deref, stream, options);
}
CompilerType type = valobj.GetCompilerType();
uint32_t size = JavaASTContext::CalculateArraySize(type, valobj);
if (size == UINT32_MAX)
return false;
stream.Printf("[%u]{...}", size);
return true;
}
SyntheticChildrenFrontEnd*
lldb_private::formatters::JavaArraySyntheticFrontEndCreator (CXXSyntheticChildren*, lldb::ValueObjectSP valobj_sp)
{
return valobj_sp ? new JavaArraySyntheticFrontEnd(valobj_sp) : nullptr;
}
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