1 //===- PrettyClassDefinitionDumper.cpp --------------------------*- C++ -*-===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9
10 #include "PrettyClassDefinitionDumper.h"
11
12 #include "LinePrinter.h"
13 #include "PrettyClassLayoutGraphicalDumper.h"
14 #include "llvm-pdbutil.h"
15
16 #include "llvm/ADT/APFloat.h"
17 #include "llvm/ADT/SmallString.h"
18 #include "llvm/DebugInfo/PDB/PDBSymbolTypeBaseClass.h"
19 #include "llvm/DebugInfo/PDB/PDBSymbolTypeUDT.h"
20 #include "llvm/DebugInfo/PDB/UDTLayout.h"
21
22 #include "llvm/Support/Format.h"
23
24 using namespace llvm;
25 using namespace llvm::pdb;
26
ClassDefinitionDumper(LinePrinter & P)27 ClassDefinitionDumper::ClassDefinitionDumper(LinePrinter &P)
28 : PDBSymDumper(true), Printer(P) {}
29
start(const PDBSymbolTypeUDT & Class)30 void ClassDefinitionDumper::start(const PDBSymbolTypeUDT &Class) {
31 assert(opts::pretty::ClassFormat !=
32 opts::pretty::ClassDefinitionFormat::None);
33
34 ClassLayout Layout(Class);
35 start(Layout);
36 }
37
start(const ClassLayout & Layout)38 void ClassDefinitionDumper::start(const ClassLayout &Layout) {
39 prettyPrintClassIntro(Layout);
40
41 PrettyClassLayoutGraphicalDumper Dumper(Printer, 1, 0);
42 DumpedAnything |= Dumper.start(Layout);
43
44 prettyPrintClassOutro(Layout);
45 }
46
prettyPrintClassIntro(const ClassLayout & Layout)47 void ClassDefinitionDumper::prettyPrintClassIntro(const ClassLayout &Layout) {
48 DumpedAnything = false;
49 Printer.NewLine();
50
51 uint32_t Size = Layout.getSize();
52 const PDBSymbolTypeUDT &Class = Layout.getClass();
53
54 WithColor(Printer, PDB_ColorItem::Keyword).get() << Class.getUdtKind() << " ";
55 WithColor(Printer, PDB_ColorItem::Type).get() << Class.getName();
56 WithColor(Printer, PDB_ColorItem::Comment).get() << " [sizeof = " << Size
57 << "]";
58 uint32_t BaseCount = Layout.bases().size();
59 if (BaseCount > 0) {
60 Printer.Indent();
61 char NextSeparator = ':';
62 for (auto BC : Layout.bases()) {
63 const auto &Base = BC->getBase();
64 if (Base.isIndirectVirtualBaseClass())
65 continue;
66
67 Printer.NewLine();
68 Printer << NextSeparator << " ";
69 WithColor(Printer, PDB_ColorItem::Keyword).get() << Base.getAccess();
70 if (BC->isVirtualBase())
71 WithColor(Printer, PDB_ColorItem::Keyword).get() << " virtual";
72
73 WithColor(Printer, PDB_ColorItem::Type).get() << " " << Base.getName();
74 NextSeparator = ',';
75 }
76
77 Printer.Unindent();
78 }
79
80 Printer << " {";
81 Printer.Indent();
82 }
83
prettyPrintClassOutro(const ClassLayout & Layout)84 void ClassDefinitionDumper::prettyPrintClassOutro(const ClassLayout &Layout) {
85 Printer.Unindent();
86 if (DumpedAnything)
87 Printer.NewLine();
88 Printer << "}";
89 Printer.NewLine();
90 if (Layout.deepPaddingSize() > 0) {
91 APFloat Pct(100.0 * (double)Layout.deepPaddingSize() /
92 (double)Layout.getSize());
93 SmallString<8> PctStr;
94 Pct.toString(PctStr, 4);
95 WithColor(Printer, PDB_ColorItem::Padding).get()
96 << "Total padding " << Layout.deepPaddingSize() << " bytes (" << PctStr
97 << "% of class size)";
98 Printer.NewLine();
99 APFloat Pct2(100.0 * (double)Layout.immediatePadding() /
100 (double)Layout.getSize());
101 PctStr.clear();
102 Pct2.toString(PctStr, 4);
103 WithColor(Printer, PDB_ColorItem::Padding).get()
104 << "Immediate padding " << Layout.immediatePadding() << " bytes ("
105 << PctStr << "% of class size)";
106 Printer.NewLine();
107 }
108 }
109