90 lines
2.9 KiB
C++
90 lines
2.9 KiB
C++
//===-- CoreMedia.cpp --------------------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "CoreMedia.h"
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#include "lldb/Core/Flags.h"
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#include "lldb/Symbol/TypeSystem.h"
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#include "lldb/Target/Target.h"
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#include <inttypes.h>
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using namespace lldb;
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using namespace lldb_private;
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using namespace lldb_private::formatters;
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bool
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lldb_private::formatters::CMTimeSummaryProvider (ValueObject& valobj, Stream& stream, const TypeSummaryOptions& options)
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{
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CompilerType type = valobj.GetCompilerType();
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if (!type.IsValid())
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return false;
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TypeSystem *type_system = valobj.GetExecutionContextRef().GetTargetSP()->GetScratchTypeSystemForLanguage(nullptr, lldb::eLanguageTypeC);
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if (!type_system)
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return false;
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// fetch children by offset to compensate for potential lack of debug info
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auto int64_ty = type_system->GetBuiltinTypeForEncodingAndBitSize(eEncodingSint, 64);
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auto int32_ty = type_system->GetBuiltinTypeForEncodingAndBitSize(eEncodingSint, 32);
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auto value_sp(valobj.GetSyntheticChildAtOffset(0, int64_ty, true));
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auto timescale_sp(valobj.GetSyntheticChildAtOffset(8, int32_ty, true));
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auto flags_sp(valobj.GetSyntheticChildAtOffset(12, int32_ty, true));
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if (!value_sp || !timescale_sp || !flags_sp)
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return false;
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auto value = value_sp->GetValueAsUnsigned(0);
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auto timescale = (int32_t)timescale_sp->GetValueAsUnsigned(0); // the timescale specifies the fraction of a second each unit in the numerator occupies
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auto flags = Flags(flags_sp->GetValueAsUnsigned(0) & 0x00000000000000FF); // the flags I need sit in the LSB
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const unsigned int FlagPositiveInf = 4;
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const unsigned int FlagNegativeInf = 8;
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const unsigned int FlagIndefinite = 16;
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if (flags.AnySet(FlagIndefinite))
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{
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stream.Printf("indefinite");
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return true;
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}
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if (flags.AnySet(FlagPositiveInf))
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{
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stream.Printf("+oo");
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return true;
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}
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if (flags.AnySet(FlagNegativeInf))
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{
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stream.Printf("-oo");
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return true;
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}
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if (timescale == 0)
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return false;
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switch (timescale)
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{
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case 0:
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return false;
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case 1:
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stream.Printf("%" PRId64 " seconds", value);
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return true;
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case 2:
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stream.Printf("%" PRId64 " half seconds", value);
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return true;
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case 3:
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stream.Printf("%" PRId64 " third%sof a second", value, value == 1 ? " " : "s ");
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return true;
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default:
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stream.Printf("%" PRId64 " %" PRId32 "th%sof a second", value, timescale, value == 1 ? " " : "s ");
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return true;
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}
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}
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