Files
clang-p2996/lldb/source/DataFormatters/CXXFormatterFunctions.cpp

267 lines
8.9 KiB
C++

//===-- CXXFormatterFunctions.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/DataFormatters/CXXFormatterFunctions.h"
#include "lldb/DataFormatters/StringPrinter.h"
#include "lldb/DataFormatters/TypeSummary.h"
#include "llvm/Support/ConvertUTF.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/SectionLoadList.h"
#include "lldb/Target/Target.h"
#include "lldb/Target/Thread.h"
#include "lldb/Utility/ProcessStructReader.h"
#include <algorithm>
#if __ANDROID_NDK__
#include <sys/types.h>
#endif
#include "lldb/Host/Time.h"
using namespace lldb;
using namespace lldb_private;
using namespace lldb_private::formatters;
StackFrame*
lldb_private::formatters::GetViableFrame (ExecutionContext exe_ctx)
{
StackFrame* frame = exe_ctx.GetFramePtr();
if (frame)
return frame;
Process* process = exe_ctx.GetProcessPtr();
if (!process)
return nullptr;
ThreadSP thread_sp(process->GetThreadList().GetSelectedThread());
if (thread_sp)
return thread_sp->GetSelectedFrame().get();
return nullptr;
}
bool
lldb_private::formatters::ExtractValueFromObjCExpression (ValueObject &valobj,
const char* target_type,
const char* selector,
uint64_t &value)
{
if (!target_type || !*target_type)
return false;
if (!selector || !*selector)
return false;
StreamString expr;
expr.Printf("(%s)[(id)0x%" PRIx64 " %s]",target_type,valobj.GetPointerValue(),selector);
ExecutionContext exe_ctx (valobj.GetExecutionContextRef());
lldb::ValueObjectSP result_sp;
Target* target = exe_ctx.GetTargetPtr();
StackFrame* stack_frame = GetViableFrame(exe_ctx);
if (!target || !stack_frame)
return false;
EvaluateExpressionOptions options;
options.SetCoerceToId(false);
options.SetUnwindOnError(true);
options.SetKeepInMemory(true);
target->EvaluateExpression(expr.GetData(),
stack_frame,
result_sp,
options);
if (!result_sp)
return false;
value = result_sp->GetValueAsUnsigned(0);
return true;
}
bool
lldb_private::formatters::ExtractSummaryFromObjCExpression (ValueObject &valobj,
const char* target_type,
const char* selector,
Stream &stream)
{
if (!target_type || !*target_type)
return false;
if (!selector || !*selector)
return false;
StreamString expr;
expr.Printf("(%s)[(id)0x%" PRIx64 " %s]",target_type,valobj.GetPointerValue(),selector);
ExecutionContext exe_ctx (valobj.GetExecutionContextRef());
lldb::ValueObjectSP result_sp;
Target* target = exe_ctx.GetTargetPtr();
StackFrame* stack_frame = GetViableFrame(exe_ctx);
if (!target || !stack_frame)
return false;
EvaluateExpressionOptions options;
options.SetCoerceToId(false);
options.SetUnwindOnError(true);
options.SetKeepInMemory(true);
options.SetUseDynamic(lldb::eDynamicCanRunTarget);
target->EvaluateExpression(expr.GetData(),
stack_frame,
result_sp,
options);
if (!result_sp)
return false;
stream.Printf("%s",result_sp->GetSummaryAsCString());
return true;
}
lldb::ValueObjectSP
lldb_private::formatters::CallSelectorOnObject (ValueObject &valobj,
const char* return_type,
const char* selector,
uint64_t index)
{
lldb::ValueObjectSP valobj_sp;
if (!return_type || !*return_type)
return valobj_sp;
if (!selector || !*selector)
return valobj_sp;
StreamString expr_path_stream;
valobj.GetExpressionPath(expr_path_stream, false);
StreamString expr;
expr.Printf("(%s)[%s %s:%" PRId64 "]",return_type,expr_path_stream.GetData(),selector,index);
ExecutionContext exe_ctx (valobj.GetExecutionContextRef());
lldb::ValueObjectSP result_sp;
Target* target = exe_ctx.GetTargetPtr();
StackFrame* stack_frame = GetViableFrame(exe_ctx);
if (!target || !stack_frame)
return valobj_sp;
EvaluateExpressionOptions options;
options.SetCoerceToId(false);
options.SetUnwindOnError(true);
options.SetKeepInMemory(true);
options.SetUseDynamic(lldb::eDynamicCanRunTarget);
target->EvaluateExpression(expr.GetData(),
stack_frame,
valobj_sp,
options);
return valobj_sp;
}
lldb::ValueObjectSP
lldb_private::formatters::CallSelectorOnObject (ValueObject &valobj,
const char* return_type,
const char* selector,
const char* key)
{
lldb::ValueObjectSP valobj_sp;
if (!return_type || !*return_type)
return valobj_sp;
if (!selector || !*selector)
return valobj_sp;
if (!key || !*key)
return valobj_sp;
StreamString expr_path_stream;
valobj.GetExpressionPath(expr_path_stream, false);
StreamString expr;
expr.Printf("(%s)[%s %s:%s]",return_type,expr_path_stream.GetData(),selector,key);
ExecutionContext exe_ctx (valobj.GetExecutionContextRef());
lldb::ValueObjectSP result_sp;
Target* target = exe_ctx.GetTargetPtr();
StackFrame* stack_frame = GetViableFrame(exe_ctx);
if (!target || !stack_frame)
return valobj_sp;
EvaluateExpressionOptions options;
options.SetCoerceToId(false);
options.SetUnwindOnError(true);
options.SetKeepInMemory(true);
options.SetUseDynamic(lldb::eDynamicCanRunTarget);
target->EvaluateExpression(expr.GetData(),
stack_frame,
valobj_sp,
options);
return valobj_sp;
}
bool
lldb_private::formatters::FunctionPointerSummaryProvider (ValueObject& valobj, Stream& stream, const TypeSummaryOptions& options)
{
std::string destination;
StreamString sstr;
AddressType func_ptr_address_type = eAddressTypeInvalid;
addr_t func_ptr_address = valobj.GetPointerValue (&func_ptr_address_type);
if (func_ptr_address != 0 && func_ptr_address != LLDB_INVALID_ADDRESS)
{
switch (func_ptr_address_type)
{
case eAddressTypeInvalid:
case eAddressTypeFile:
case eAddressTypeHost:
break;
case eAddressTypeLoad:
{
ExecutionContext exe_ctx (valobj.GetExecutionContextRef());
Address so_addr;
Target *target = exe_ctx.GetTargetPtr();
if (target && target->GetSectionLoadList().IsEmpty() == false)
{
if (target->GetSectionLoadList().ResolveLoadAddress(func_ptr_address, so_addr))
{
so_addr.Dump (&sstr,
exe_ctx.GetBestExecutionContextScope(),
Address::DumpStyleResolvedDescription,
Address::DumpStyleSectionNameOffset);
}
}
}
break;
}
}
if (sstr.GetSize() > 0)
{
stream.Printf("(%s)", sstr.GetData());
return true;
}
else
return false;
}
bool
lldb_private::formatters::RuntimeSpecificDescriptionSummaryProvider (ValueObject& valobj, Stream& stream, const TypeSummaryOptions& options)
{
stream.Printf("%s",valobj.GetObjectDescription());
return true;
}
size_t
lldb_private::formatters::ExtractIndexFromString (const char* item_name)
{
if (!item_name || !*item_name)
return UINT32_MAX;
if (*item_name != '[')
return UINT32_MAX;
item_name++;
char* endptr = NULL;
unsigned long int idx = ::strtoul(item_name, &endptr, 0);
if (idx == 0 && endptr == item_name)
return UINT32_MAX;
if (idx == ULONG_MAX)
return UINT32_MAX;
return idx;
}