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llvm-project/lldb/source/DataFormatters/Cocoa.cpp

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//===-- Cocoa.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::NSBundleSummaryProvider (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;
const char* class_name = descriptor->GetClassName().GetCString();
if (!class_name || !*class_name)
return false;
if (!strcmp(class_name,"NSBundle"))
{
uint64_t offset = 5 * ptr_size;
ValueObjectSP text(valobj.GetSyntheticChildAtOffset(offset, valobj.GetClangType().GetBasicTypeFromAST(lldb::eBasicTypeObjCID), true));
StreamString summary_stream;
bool was_nsstring_ok = NSStringSummaryProvider(*text.get(), summary_stream);
if (was_nsstring_ok && summary_stream.GetSize() > 0)
{
stream.Printf("%s",summary_stream.GetData());
return true;
}
}
// this is either an unknown subclass or an NSBundle that comes from [NSBundle mainBundle]
// which is encoded differently and needs to be handled by running code
return ExtractSummaryFromObjCExpression(valobj, "NSString*", "bundlePath", stream);
}
bool
lldb_private::formatters::NSTimeZoneSummaryProvider (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;
const char* class_name = descriptor->GetClassName().GetCString();
if (!class_name || !*class_name)
return false;
if (!strcmp(class_name,"__NSTimeZone"))
{
uint64_t offset = ptr_size;
ValueObjectSP text(valobj.GetSyntheticChildAtOffset(offset, valobj.GetClangType(), true));
StreamString summary_stream;
bool was_nsstring_ok = NSStringSummaryProvider(*text.get(), summary_stream);
if (was_nsstring_ok && summary_stream.GetSize() > 0)
{
stream.Printf("%s",summary_stream.GetData());
return true;
}
}
return ExtractSummaryFromObjCExpression(valobj, "NSString*", "name", stream);
}
bool
lldb_private::formatters::NSNotificationSummaryProvider (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;
const char* class_name = descriptor->GetClassName().GetCString();
if (!class_name || !*class_name)
return false;
if (!strcmp(class_name,"NSConcreteNotification"))
{
uint64_t offset = ptr_size;
ValueObjectSP text(valobj.GetSyntheticChildAtOffset(offset, valobj.GetClangType(), true));
StreamString summary_stream;
bool was_nsstring_ok = NSStringSummaryProvider(*text.get(), summary_stream);
if (was_nsstring_ok && summary_stream.GetSize() > 0)
{
stream.Printf("%s",summary_stream.GetData());
return true;
}
}
// this is either an unknown subclass or an NSBundle that comes from [NSBundle mainBundle]
// which is encoded differently and needs to be handled by running code
return ExtractSummaryFromObjCExpression(valobj, "NSString*", "name", stream);
}
bool
lldb_private::formatters::NSMachPortSummaryProvider (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;
const char* class_name = descriptor->GetClassName().GetCString();
if (!class_name || !*class_name)
return false;
uint64_t port_number = 0;
do
{
if (!strcmp(class_name,"NSMachPort"))
{
uint64_t offset = (ptr_size == 4 ? 12 : 20);
Error error;
port_number = process_sp->ReadUnsignedIntegerFromMemory(offset+valobj_addr, 4, 0, error);
if (error.Success())
break;
}
if (!ExtractValueFromObjCExpression(valobj, "int", "machPort", port_number))
return false;
} while (false);
stream.Printf("mach port: %u",(uint32_t)(port_number & 0x00000000FFFFFFFF));
return true;
}
bool
lldb_private::formatters::NSIndexSetSummaryProvider (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;
const char* class_name = descriptor->GetClassName().GetCString();
if (!class_name || !*class_name)
return false;
uint64_t count = 0;
do {
if (!strcmp(class_name,"NSIndexSet") || !strcmp(class_name,"NSMutableIndexSet"))
{
Error error;
uint32_t mode = process_sp->ReadUnsignedIntegerFromMemory(valobj_addr+ptr_size, 4, 0, error);
if (error.Fail())
return false;
// this means the set is empty - count = 0
if ((mode & 1) == 1)
{
count = 0;
break;
}
if ((mode & 2) == 2)
mode = 1; // this means the set only has one range
else
mode = 2; // this means the set has multiple ranges
if (mode == 1)
{
count = process_sp->ReadUnsignedIntegerFromMemory(valobj_addr+3*ptr_size, ptr_size, 0, error);
if (error.Fail())
return false;
}
else
{
// read a pointer to the data at 2*ptr_size
count = process_sp->ReadUnsignedIntegerFromMemory(valobj_addr+2*ptr_size, ptr_size, 0, error);
if (error.Fail())
return false;
// read the data at 2*ptr_size from the first location
count = process_sp->ReadUnsignedIntegerFromMemory(count+2*ptr_size, ptr_size, 0, error);
if (error.Fail())
return false;
}
}
else
{
if (!ExtractValueFromObjCExpression(valobj, "unsigned long long int", "count", count))
return false;
}
} while (false);
stream.Printf("%" PRIu64 " index%s",
count,
(count == 1 ? "" : "es"));
return true;
}
bool
lldb_private::formatters::NSNumberSummaryProvider (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;
const char* class_name = descriptor->GetClassName().GetCString();
if (!class_name || !*class_name)
return false;
if (!strcmp(class_name,"NSNumber") || !strcmp(class_name,"__NSCFNumber"))
{
uint64_t value = 0;
uint64_t i_bits = 0;
if (descriptor->GetTaggedPointerInfo(&i_bits,&value))
{
switch (i_bits)
{
case 0:
stream.Printf("(char)%hhd",(char)value);
break;
case 1:
case 4:
stream.Printf("(short)%hd",(short)value);
break;
case 2:
case 8:
stream.Printf("(int)%d",(int)value);
break;
case 3:
case 12:
stream.Printf("(long)%" PRId64,value);
break;
default:
stream.Printf("unexpected value:(info=%" PRIu64 ", value=%" PRIu64,i_bits,value);
break;
}
return true;
}
else
{
Error error;
uint8_t data_type = (process_sp->ReadUnsignedIntegerFromMemory(valobj_addr + ptr_size, 1, 0, error) & 0x1F);
uint64_t data_location = valobj_addr + 2*ptr_size;
uint64_t value = 0;
if (error.Fail())
return false;
switch (data_type)
{
case 1: // 0B00001
value = process_sp->ReadUnsignedIntegerFromMemory(data_location, 1, 0, error);
if (error.Fail())
return false;
stream.Printf("(char)%hhd",(char)value);
break;
case 2: // 0B0010
value = process_sp->ReadUnsignedIntegerFromMemory(data_location, 2, 0, error);
if (error.Fail())
return false;
stream.Printf("(short)%hd",(short)value);
break;
case 3: // 0B0011
value = process_sp->ReadUnsignedIntegerFromMemory(data_location, 4, 0, error);
if (error.Fail())
return false;
stream.Printf("(int)%d",(int)value);
break;
case 17: // 0B10001
data_location += 8;
case 4: // 0B0100
value = process_sp->ReadUnsignedIntegerFromMemory(data_location, 8, 0, error);
if (error.Fail())
return false;
stream.Printf("(long)%" PRId64,value);
break;
case 5: // 0B0101
{
uint32_t flt_as_int = process_sp->ReadUnsignedIntegerFromMemory(data_location, 4, 0, error);
if (error.Fail())
return false;
float flt_value = *((float*)&flt_as_int);
stream.Printf("(float)%f",flt_value);
break;
}
case 6: // 0B0110
{
uint64_t dbl_as_lng = process_sp->ReadUnsignedIntegerFromMemory(data_location, 8, 0, error);
if (error.Fail())
return false;
double dbl_value = *((double*)&dbl_as_lng);
stream.Printf("(double)%g",dbl_value);
break;
}
default:
stream.Printf("unexpected value: dt=%d",data_type);
break;
}
return true;
}
}
else
{
return ExtractSummaryFromObjCExpression(valobj, "NSString*", "stringValue", stream);
}
}
bool
lldb_private::formatters::NSURLSummaryProvider (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;
const char* class_name = descriptor->GetClassName().GetCString();
if (!class_name || !*class_name)
return false;
if (strcmp(class_name, "NSURL") == 0)
{
uint64_t offset_text = ptr_size + ptr_size + 8; // ISA + pointer + 8 bytes of data (even on 32bit)
uint64_t offset_base = offset_text + ptr_size;
ClangASTType type(valobj.GetClangType());
ValueObjectSP text(valobj.GetSyntheticChildAtOffset(offset_text, type, true));
ValueObjectSP base(valobj.GetSyntheticChildAtOffset(offset_base, type, true));
if (!text)
return false;
if (text->GetValueAsUnsigned(0) == 0)
return false;
StreamString summary;
if (!NSStringSummaryProvider(*text, summary))
return false;
if (base && base->GetValueAsUnsigned(0))
{
if (summary.GetSize() > 0)
summary.GetString().resize(summary.GetSize()-1);
summary.Printf(" -- ");
StreamString base_summary;
if (NSURLSummaryProvider(*base, base_summary) && base_summary.GetSize() > 0)
summary.Printf("%s",base_summary.GetSize() > 2 ? base_summary.GetData() + 2 : base_summary.GetData());
}
if (summary.GetSize())
{
stream.Printf("%s",summary.GetData());
return true;
}
}
else
{
return ExtractSummaryFromObjCExpression(valobj, "NSString*", "description", stream);
}
return false;
}
bool
lldb_private::formatters::NSDateSummaryProvider (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 date_value_bits = 0;
double date_value = 0.0;
const char* class_name = descriptor->GetClassName().GetCString();
if (!class_name || !*class_name)
return false;
if (strcmp(class_name,"NSDate") == 0 ||
strcmp(class_name,"__NSDate") == 0 ||
strcmp(class_name,"__NSTaggedDate") == 0)
{
uint64_t info_bits=0,value_bits = 0;
if (descriptor->GetTaggedPointerInfo(&info_bits,&value_bits))
{
date_value_bits = ((value_bits << 8) | (info_bits << 4));
date_value = *((double*)&date_value_bits);
}
else
{
Error error;
date_value_bits = process_sp->ReadUnsignedIntegerFromMemory(valobj_addr+ptr_size, 8, 0, error);
date_value = *((double*)&date_value_bits);
if (error.Fail())
return false;
}
}
else if (!strcmp(class_name,"NSCalendarDate"))
{
Error error;
date_value_bits = process_sp->ReadUnsignedIntegerFromMemory(valobj_addr+2*ptr_size, 8, 0, error);
date_value = *((double*)&date_value_bits);
if (error.Fail())
return false;
}
else
{
if (ExtractValueFromObjCExpression(valobj, "NSTimeInterval", "ExtractValueFromObjCExpression", date_value_bits) == false)
return false;
date_value = *((double*)&date_value_bits);
}
if (date_value == -63114076800)
{
stream.Printf("0001-12-30 00:00:00 +0000");
return true;
}
// this snippet of code assumes that time_t == seconds since Jan-1-1970
// this is generally true and POSIXly happy, but might break if a library
// vendor decides to get creative
time_t epoch = GetOSXEpoch();
epoch = epoch + (time_t)date_value;
tm *tm_date = localtime(&epoch);
if (!tm_date)
return false;
std::string buffer(1024,0);
if (strftime (&buffer[0], 1023, "%Z", tm_date) == 0)
return false;
stream.Printf("%04d-%02d-%02d %02d:%02d:%02d %s", tm_date->tm_year+1900, tm_date->tm_mon+1, tm_date->tm_mday, tm_date->tm_hour, tm_date->tm_min, tm_date->tm_sec, buffer.c_str());
return true;
}
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