1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
|
//===- ASTSrcLocProcessor.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 "ASTSrcLocProcessor.h"
#include "clang/Frontend/CompilerInstance.h"
#include "llvm/Support/JSON.h"
#include "llvm/Support/MemoryBuffer.h"
using namespace clang::tooling;
using namespace llvm;
using namespace clang::ast_matchers;
ASTSrcLocProcessor::ASTSrcLocProcessor(StringRef JsonPath)
: JsonPath(JsonPath) {
MatchFinder::MatchFinderOptions FinderOptions;
Finder = std::make_unique<MatchFinder>(std::move(FinderOptions));
Finder->addMatcher(
cxxRecordDecl(
isDefinition(),
isSameOrDerivedFrom(
namedDecl(
hasAnyName(
"clang::Stmt", "clang::Decl", "clang::CXXCtorInitializer",
"clang::NestedNameSpecifierLoc",
"clang::TemplateArgumentLoc", "clang::CXXBaseSpecifier",
"clang::DeclarationNameInfo", "clang::TypeLoc"))
.bind("nodeClade")),
optionally(isDerivedFrom(cxxRecordDecl().bind("derivedFrom"))))
.bind("className"),
this);
Finder->addMatcher(
cxxRecordDecl(isDefinition(), hasAnyName("clang::PointerLikeTypeLoc",
"clang::TypeofLikeTypeLoc"))
.bind("templateName"),
this);
}
std::unique_ptr<clang::ASTConsumer>
ASTSrcLocProcessor::createASTConsumer(clang::CompilerInstance &Compiler,
StringRef File) {
return Finder->newASTConsumer();
}
llvm::json::Object toJSON(llvm::StringMap<std::vector<StringRef>> const &Obj) {
using llvm::json::toJSON;
llvm::json::Object JsonObj;
for (const auto &Item : Obj) {
JsonObj[Item.first()] = Item.second;
}
return JsonObj;
}
llvm::json::Object toJSON(llvm::StringMap<std::string> const &Obj) {
using llvm::json::toJSON;
llvm::json::Object JsonObj;
for (const auto &Item : Obj) {
JsonObj[Item.first()] = Item.second;
}
return JsonObj;
}
llvm::json::Object toJSON(ClassData const &Obj) {
llvm::json::Object JsonObj;
if (!Obj.ASTClassLocations.empty())
JsonObj["sourceLocations"] = Obj.ASTClassLocations;
if (!Obj.ASTClassRanges.empty())
JsonObj["sourceRanges"] = Obj.ASTClassRanges;
if (!Obj.TemplateParms.empty())
JsonObj["templateParms"] = Obj.TemplateParms;
if (!Obj.TypeSourceInfos.empty())
JsonObj["typeSourceInfos"] = Obj.TypeSourceInfos;
if (!Obj.TypeLocs.empty())
JsonObj["typeLocs"] = Obj.TypeLocs;
if (!Obj.NestedNameLocs.empty())
JsonObj["nestedNameLocs"] = Obj.NestedNameLocs;
if (!Obj.DeclNameInfos.empty())
JsonObj["declNameInfos"] = Obj.DeclNameInfos;
return JsonObj;
}
llvm::json::Object toJSON(llvm::StringMap<ClassData> const &Obj) {
using llvm::json::toJSON;
llvm::json::Object JsonObj;
for (const auto &Item : Obj)
JsonObj[Item.first()] = ::toJSON(Item.second);
return JsonObj;
}
void WriteJSON(StringRef JsonPath, llvm::json::Object &&ClassInheritance,
llvm::json::Object &&ClassesInClade,
llvm::json::Object &&ClassEntries) {
llvm::json::Object JsonObj;
using llvm::json::toJSON;
JsonObj["classInheritance"] = std::move(ClassInheritance);
JsonObj["classesInClade"] = std::move(ClassesInClade);
JsonObj["classEntries"] = std::move(ClassEntries);
llvm::json::Value JsonVal(std::move(JsonObj));
bool WriteChange = false;
std::string OutString;
if (auto ExistingOrErr = MemoryBuffer::getFile(JsonPath, /*IsText=*/true)) {
raw_string_ostream Out(OutString);
Out << formatv("{0:2}", JsonVal);
if (ExistingOrErr.get()->getBuffer() == Out.str())
return;
WriteChange = true;
}
std::error_code EC;
llvm::raw_fd_ostream JsonOut(JsonPath, EC, llvm::sys::fs::OF_Text);
if (EC)
return;
if (WriteChange)
JsonOut << OutString;
else
JsonOut << formatv("{0:2}", JsonVal);
}
void ASTSrcLocProcessor::generate() {
WriteJSON(JsonPath, ::toJSON(ClassInheritance), ::toJSON(ClassesInClade),
::toJSON(ClassEntries));
}
void ASTSrcLocProcessor::generateEmpty() { WriteJSON(JsonPath, {}, {}, {}); }
std::vector<std::string>
CaptureMethods(std::string TypeString, const clang::CXXRecordDecl *ASTClass,
const MatchFinder::MatchResult &Result) {
auto publicAccessor = [](auto... InnerMatcher) {
return cxxMethodDecl(isPublic(), parameterCountIs(0), isConst(),
InnerMatcher...);
};
auto BoundNodesVec = match(
findAll(
publicAccessor(
ofClass(cxxRecordDecl(
equalsNode(ASTClass),
optionally(isDerivedFrom(
cxxRecordDecl(hasAnyName("clang::Stmt", "clang::Decl"))
.bind("stmtOrDeclBase"))),
optionally(isDerivedFrom(
cxxRecordDecl(hasName("clang::Expr")).bind("exprBase"))),
optionally(
isDerivedFrom(cxxRecordDecl(hasName("clang::TypeLoc"))
.bind("typeLocBase"))))),
returns(hasCanonicalType(asString(TypeString))))
.bind("classMethod")),
*ASTClass, *Result.Context);
std::vector<std::string> Methods;
for (const auto &BN : BoundNodesVec) {
if (const auto *Node = BN.getNodeAs<clang::NamedDecl>("classMethod")) {
const auto *StmtOrDeclBase =
BN.getNodeAs<clang::CXXRecordDecl>("stmtOrDeclBase");
const auto *TypeLocBase =
BN.getNodeAs<clang::CXXRecordDecl>("typeLocBase");
const auto *ExprBase = BN.getNodeAs<clang::CXXRecordDecl>("exprBase");
// The clang AST has several methods on base classes which are overriden
// pseudo-virtually by derived classes.
// We record only the pseudo-virtual methods on the base classes to
// avoid duplication.
if (StmtOrDeclBase &&
(Node->getName() == "getBeginLoc" || Node->getName() == "getEndLoc" ||
Node->getName() == "getSourceRange"))
continue;
if (ExprBase && Node->getName() == "getExprLoc")
continue;
if (TypeLocBase && Node->getName() == "getLocalSourceRange")
continue;
if ((ASTClass->getName() == "PointerLikeTypeLoc" ||
ASTClass->getName() == "TypeofLikeTypeLoc") &&
Node->getName() == "getLocalSourceRange")
continue;
Methods.push_back(Node->getName().str());
}
}
return Methods;
}
void ASTSrcLocProcessor::run(const MatchFinder::MatchResult &Result) {
const auto *ASTClass =
Result.Nodes.getNodeAs<clang::CXXRecordDecl>("className");
StringRef CladeName;
if (ASTClass) {
if (const auto *NodeClade =
Result.Nodes.getNodeAs<clang::CXXRecordDecl>("nodeClade"))
CladeName = NodeClade->getName();
} else {
ASTClass = Result.Nodes.getNodeAs<clang::CXXRecordDecl>("templateName");
CladeName = "TypeLoc";
}
StringRef ClassName = ASTClass->getName();
ClassData CD;
CD.ASTClassLocations =
CaptureMethods("class clang::SourceLocation", ASTClass, Result);
CD.ASTClassRanges =
CaptureMethods("class clang::SourceRange", ASTClass, Result);
CD.TypeSourceInfos =
CaptureMethods("class clang::TypeSourceInfo *", ASTClass, Result);
CD.TypeLocs = CaptureMethods("class clang::TypeLoc", ASTClass, Result);
CD.NestedNameLocs =
CaptureMethods("class clang::NestedNameSpecifierLoc", ASTClass, Result);
CD.DeclNameInfos =
CaptureMethods("struct clang::DeclarationNameInfo", ASTClass, Result);
auto DI = CaptureMethods("const struct clang::DeclarationNameInfo &",
ASTClass, Result);
CD.DeclNameInfos.insert(CD.DeclNameInfos.end(), DI.begin(), DI.end());
if (const auto *DerivedFrom =
Result.Nodes.getNodeAs<clang::CXXRecordDecl>("derivedFrom")) {
if (const auto *Templ =
llvm::dyn_cast<clang::ClassTemplateSpecializationDecl>(
DerivedFrom)) {
const auto &TArgs = Templ->getTemplateArgs();
SmallString<256> TArgsString;
llvm::raw_svector_ostream OS(TArgsString);
OS << DerivedFrom->getName() << '<';
clang::PrintingPolicy PPol(Result.Context->getLangOpts());
PPol.TerseOutput = true;
for (unsigned I = 0; I < TArgs.size(); ++I) {
if (I > 0)
OS << ", ";
TArgs.get(I).getAsType().print(OS, PPol);
}
OS << '>';
ClassInheritance[ClassName] = TArgsString.str().str();
} else {
ClassInheritance[ClassName] = DerivedFrom->getName().str();
}
}
if (const auto *Templ = ASTClass->getDescribedClassTemplate()) {
if (auto *TParams = Templ->getTemplateParameters()) {
for (const auto &TParam : *TParams) {
CD.TemplateParms.push_back(TParam->getName().str());
}
}
}
ClassEntries[ClassName] = CD;
ClassesInClade[CladeName].push_back(ClassName);
}
|
