clang: lib/AST/InheritViz.cpp Source File (original) (raw)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
19#include "llvm/Support/FileSystem.h"
20#include "llvm/Support/GraphWriter.h"
21#include "llvm/Support/raw_ostream.h"
22#include
23#include
24using namespace clang;
25
26namespace {
27
28
29
30
31
32
33class InheritanceHierarchyWriter {
35 raw_ostream &Out;
36 std::map<QualType, int, QualTypeOrdering> DirectBaseCount;
37 std::set<QualType, QualTypeOrdering> KnownVirtualBases;
38
39public:
40 InheritanceHierarchyWriter(ASTContext& Context, raw_ostream& Out)
41 : Context(Context), Out(Out) { }
42
44 Out << "digraph \"" << llvm::DOT::EscapeString(Type.getAsString())
45 << "\" {\n";
46 WriteNode(Type, false);
47 Out << "}\n";
48 }
49
50protected:
51
52
53 void WriteNode(QualType Type, bool FromVirtual);
54
55
56
57
58 raw_ostream& WriteNodeReference(QualType Type, bool FromVirtual);
59};
60}
61
62void InheritanceHierarchyWriter::WriteNode(QualType Type, bool FromVirtual) {
64
65 if (FromVirtual) {
66 if (!KnownVirtualBases.insert(CanonType).second)
67 return;
68
69
70
71 }
72
73
74 Out << " ";
75 WriteNodeReference(Type, FromVirtual);
76
77
79 Out << " [ shape=\"box\", label=\"" << llvm::DOT::EscapeString(TypeName);
80
81
82
83
84 if (TypeName != CanonType.getAsString()) {
85 Out << "\\n(" << CanonType.getAsString() << ")";
86 }
87
88
89 Out << " \"];\n";
90
91
92 const auto *Decl =
94 for (const auto &Base : Decl->bases()) {
96
97
98
99 if (.isVirtual())
100 ++DirectBaseCount[CanonBaseType];
101
102
103 WriteNode(Base.getType(), Base.isVirtual());
104
105
106 Out << " ";
107 WriteNodeReference(Type, FromVirtual);
108 Out << " -> ";
109 WriteNodeReference(Base.getType(), Base.isVirtual());
110
111
112 if (Base.isVirtual()) {
113 Out << " [ style=\"dashed\" ]";
114 }
115 Out << ";";
116 }
117}
118
119
120
121
122raw_ostream&
123InheritanceHierarchyWriter::WriteNodeReference(QualType Type,
124 bool FromVirtual) {
126
128 if (!FromVirtual)
129 Out << "_" << DirectBaseCount[CanonType];
130 return Out;
131}
132
133
134
137
138 int FD;
140 if (std::error_code EC = llvm::sys::fs::createTemporaryFile(
142 llvm::errs() << "Error: " << EC.message() << "\n";
143 return;
144 }
145
146 llvm::errs() << "Writing '" << Filename << "'... ";
147
148 llvm::raw_fd_ostream O(FD, true);
149
150 InheritanceHierarchyWriter Writer(Context, O);
151 Writer.WriteGraph(Self);
152 llvm::errs() << " done. \n";
153
154 O.close();
155
156
158}
Defines the clang::ASTContext interface.
Defines the C++ Decl subclasses, other than those for templates (found in DeclTemplate....
Allows QualTypes to be sorted and hence used in maps and sets.
Holds long-lived AST nodes (such as types and decls) that can be referred to throughout the semantic ...
CanQualType getCanonicalType(QualType T) const
Return the canonical (structural) type corresponding to the specified potentially non-canonical type ...
QualType getTypeDeclType(const TypeDecl *Decl, const TypeDecl *PrevDecl=nullptr) const
Return the unique reference to the type for the specified type declaration.
Represents a C++ struct/union/class.
void viewInheritance(ASTContext &Context) const
Renders and displays an inheritance diagram for this C++ class and all of its base classes (transitiv...
Decl - This represents one declaration (or definition), e.g.
A (possibly-)qualified type.
void * getAsOpaquePtr() const
static std::string getAsString(SplitQualType split, const PrintingPolicy &Policy)
A helper class that allows the use of isa/cast/dyncast to detect TagType objects of structs/unions/cl...
The base class of the type hierarchy.
const T * castAs() const
Member-template castAs.
The JSON file list parser is used to communicate input to InstallAPI.
@ Self
'self' clause, allowed on Compute and Combined Constructs, plus 'update'.