PrettyClassDefinitionDumper.cpp
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//===- PrettyClassDefinitionDumper.cpp --------------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "PrettyClassDefinitionDumper.h"
#include "LinePrinter.h"
#include "PrettyClassLayoutGraphicalDumper.h"
#include "llvm-pdbutil.h"
#include "llvm/ADT/APFloat.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/DebugInfo/PDB/PDBSymbolTypeBaseClass.h"
#include "llvm/DebugInfo/PDB/PDBSymbolTypeUDT.h"
#include "llvm/DebugInfo/PDB/UDTLayout.h"
#include "llvm/Support/Format.h"
using namespace llvm;
using namespace llvm::pdb;
ClassDefinitionDumper::ClassDefinitionDumper(LinePrinter &P)
: PDBSymDumper(true), Printer(P) {}
void ClassDefinitionDumper::start(const PDBSymbolTypeUDT &Class) {
assert(opts::pretty::ClassFormat !=
opts::pretty::ClassDefinitionFormat::None);
ClassLayout Layout(Class);
start(Layout);
}
void ClassDefinitionDumper::start(const ClassLayout &Layout) {
prettyPrintClassIntro(Layout);
PrettyClassLayoutGraphicalDumper Dumper(Printer, 1, 0);
DumpedAnything |= Dumper.start(Layout);
prettyPrintClassOutro(Layout);
}
void ClassDefinitionDumper::prettyPrintClassIntro(const ClassLayout &Layout) {
DumpedAnything = false;
Printer.NewLine();
uint32_t Size = Layout.getSize();
const PDBSymbolTypeUDT &Class = Layout.getClass();
if (Layout.getClass().isConstType())
WithColor(Printer, PDB_ColorItem::Keyword).get() << "const ";
if (Layout.getClass().isVolatileType())
WithColor(Printer, PDB_ColorItem::Keyword).get() << "volatile ";
if (Layout.getClass().isUnalignedType())
WithColor(Printer, PDB_ColorItem::Keyword).get() << "unaligned ";
WithColor(Printer, PDB_ColorItem::Keyword).get() << Class.getUdtKind() << " ";
WithColor(Printer, PDB_ColorItem::Type).get() << Class.getName();
WithColor(Printer, PDB_ColorItem::Comment).get() << " [sizeof = " << Size
<< "]";
uint32_t BaseCount = Layout.bases().size();
if (BaseCount > 0) {
Printer.Indent();
char NextSeparator = ':';
for (auto BC : Layout.bases()) {
const auto &Base = BC->getBase();
if (Base.isIndirectVirtualBaseClass())
continue;
Printer.NewLine();
Printer << NextSeparator << " ";
WithColor(Printer, PDB_ColorItem::Keyword).get() << Base.getAccess();
if (BC->isVirtualBase())
WithColor(Printer, PDB_ColorItem::Keyword).get() << " virtual";
WithColor(Printer, PDB_ColorItem::Type).get() << " " << Base.getName();
NextSeparator = ',';
}
Printer.Unindent();
}
Printer << " {";
Printer.Indent();
}
void ClassDefinitionDumper::prettyPrintClassOutro(const ClassLayout &Layout) {
Printer.Unindent();
if (DumpedAnything)
Printer.NewLine();
Printer << "}";
Printer.NewLine();
if (Layout.deepPaddingSize() > 0) {
APFloat Pct(100.0 * (double)Layout.deepPaddingSize() /
(double)Layout.getSize());
SmallString<8> PctStr;
Pct.toString(PctStr, 4);
WithColor(Printer, PDB_ColorItem::Padding).get()
<< "Total padding " << Layout.deepPaddingSize() << " bytes (" << PctStr
<< "% of class size)";
Printer.NewLine();
APFloat Pct2(100.0 * (double)Layout.immediatePadding() /
(double)Layout.getSize());
PctStr.clear();
Pct2.toString(PctStr, 4);
WithColor(Printer, PDB_ColorItem::Padding).get()
<< "Immediate padding " << Layout.immediatePadding() << " bytes ("
<< PctStr << "% of class size)";
Printer.NewLine();
}
}