1 //===-- YAMLSerialization.cpp ------------------------------------*- C++-*-===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 //
9 // A YAML index file is a sequence of tagged entries.
10 // Each entry either encodes a Symbol or the list of references to a symbol
11 // (a "ref bundle").
12 //
13 //===----------------------------------------------------------------------===//
14
15 #include "Index.h"
16 #include "Relation.h"
17 #include "Serialization.h"
18 #include "SymbolLocation.h"
19 #include "SymbolOrigin.h"
20 #include "dex/Dex.h"
21 #include "support/Logger.h"
22 #include "support/Trace.h"
23 #include "llvm/ADT/Optional.h"
24 #include "llvm/ADT/SmallVector.h"
25 #include "llvm/ADT/StringRef.h"
26 #include "llvm/Support/Allocator.h"
27 #include "llvm/Support/Errc.h"
28 #include "llvm/Support/MemoryBuffer.h"
29 #include "llvm/Support/StringSaver.h"
30 #include "llvm/Support/YAMLTraits.h"
31 #include "llvm/Support/raw_ostream.h"
32 #include <cstdint>
33
34 LLVM_YAML_IS_SEQUENCE_VECTOR(clang::clangd::Symbol::IncludeHeaderWithReferences)
35 LLVM_YAML_IS_SEQUENCE_VECTOR(clang::clangd::Ref)
36
37 namespace {
38 using RefBundle =
39 std::pair<clang::clangd::SymbolID, std::vector<clang::clangd::Ref>>;
40 // This is a pale imitation of std::variant<Symbol, RefBundle, Relation>
41 struct VariantEntry {
42 llvm::Optional<clang::clangd::Symbol> Symbol;
43 llvm::Optional<RefBundle> Refs;
44 llvm::Optional<clang::clangd::Relation> Relation;
45 llvm::Optional<clang::clangd::IncludeGraphNode> Source;
46 llvm::Optional<clang::tooling::CompileCommand> Cmd;
47 };
48 // A class helps YAML to serialize the 32-bit encoded position (Line&Column),
49 // as YAMLIO can't directly map bitfields.
50 struct YPosition {
51 uint32_t Line;
52 uint32_t Column;
53 };
54
55 // avoid ODR violation of specialization for non-owned CompileCommand
56 struct CompileCommandYAML : clang::tooling::CompileCommand {};
57
58 } // namespace
59 namespace llvm {
60 namespace yaml {
61
62 using clang::clangd::FileDigest;
63 using clang::clangd::IncludeGraph;
64 using clang::clangd::IncludeGraphNode;
65 using clang::clangd::Ref;
66 using clang::clangd::RefKind;
67 using clang::clangd::Relation;
68 using clang::clangd::RelationKind;
69 using clang::clangd::Symbol;
70 using clang::clangd::SymbolID;
71 using clang::clangd::SymbolLocation;
72 using clang::clangd::SymbolOrigin;
73 using clang::index::SymbolInfo;
74 using clang::index::SymbolKind;
75 using clang::index::SymbolLanguage;
76 using clang::index::SymbolRole;
77 using clang::tooling::CompileCommand;
78
79 // Helper to (de)serialize the SymbolID. We serialize it as a hex string.
80 struct NormalizedSymbolID {
NormalizedSymbolIDllvm::yaml::NormalizedSymbolID81 NormalizedSymbolID(IO &) {}
NormalizedSymbolIDllvm::yaml::NormalizedSymbolID82 NormalizedSymbolID(IO &, const SymbolID &ID) {
83 llvm::raw_string_ostream OS(HexString);
84 OS << ID;
85 }
86
denormalizellvm::yaml::NormalizedSymbolID87 SymbolID denormalize(IO &I) {
88 auto ID = SymbolID::fromStr(HexString);
89 if (!ID) {
90 I.setError(llvm::toString(ID.takeError()));
91 return SymbolID();
92 }
93 return *ID;
94 }
95
96 std::string HexString;
97 };
98
99 struct NormalizedSymbolFlag {
NormalizedSymbolFlagllvm::yaml::NormalizedSymbolFlag100 NormalizedSymbolFlag(IO &) {}
NormalizedSymbolFlagllvm::yaml::NormalizedSymbolFlag101 NormalizedSymbolFlag(IO &, Symbol::SymbolFlag F) {
102 Flag = static_cast<uint8_t>(F);
103 }
104
denormalizellvm::yaml::NormalizedSymbolFlag105 Symbol::SymbolFlag denormalize(IO &) {
106 return static_cast<Symbol::SymbolFlag>(Flag);
107 }
108
109 uint8_t Flag = 0;
110 };
111
112 struct NormalizedSymbolOrigin {
NormalizedSymbolOriginllvm::yaml::NormalizedSymbolOrigin113 NormalizedSymbolOrigin(IO &) {}
NormalizedSymbolOriginllvm::yaml::NormalizedSymbolOrigin114 NormalizedSymbolOrigin(IO &, SymbolOrigin O) {
115 Origin = static_cast<uint8_t>(O);
116 }
117
denormalizellvm::yaml::NormalizedSymbolOrigin118 SymbolOrigin denormalize(IO &) { return static_cast<SymbolOrigin>(Origin); }
119
120 uint8_t Origin = 0;
121 };
122
123 template <> struct MappingTraits<YPosition> {
mappingllvm::yaml::MappingTraits124 static void mapping(IO &IO, YPosition &Value) {
125 IO.mapRequired("Line", Value.Line);
126 IO.mapRequired("Column", Value.Column);
127 }
128 };
129
130 struct NormalizedPosition {
131 using Position = clang::clangd::SymbolLocation::Position;
NormalizedPositionllvm::yaml::NormalizedPosition132 NormalizedPosition(IO &) {}
NormalizedPositionllvm::yaml::NormalizedPosition133 NormalizedPosition(IO &, const Position &Pos) {
134 P.Line = Pos.line();
135 P.Column = Pos.column();
136 }
137
denormalizellvm::yaml::NormalizedPosition138 Position denormalize(IO &) {
139 Position Pos;
140 Pos.setLine(P.Line);
141 Pos.setColumn(P.Column);
142 return Pos;
143 }
144 YPosition P;
145 };
146
147 struct NormalizedFileURI {
NormalizedFileURIllvm::yaml::NormalizedFileURI148 NormalizedFileURI(IO &) {}
NormalizedFileURIllvm::yaml::NormalizedFileURI149 NormalizedFileURI(IO &, const char *FileURI) { URI = FileURI; }
150
denormalizellvm::yaml::NormalizedFileURI151 const char *denormalize(IO &IO) {
152 assert(IO.getContext() &&
153 "Expecting an UniqueStringSaver to allocate data");
154 return static_cast<llvm::UniqueStringSaver *>(IO.getContext())
155 ->save(URI)
156 .data();
157 }
158
159 std::string URI;
160 };
161
162 template <> struct MappingTraits<SymbolLocation> {
mappingllvm::yaml::MappingTraits163 static void mapping(IO &IO, SymbolLocation &Value) {
164 MappingNormalization<NormalizedFileURI, const char *> NFile(IO,
165 Value.FileURI);
166 IO.mapRequired("FileURI", NFile->URI);
167 MappingNormalization<NormalizedPosition, SymbolLocation::Position> NStart(
168 IO, Value.Start);
169 IO.mapRequired("Start", NStart->P);
170 MappingNormalization<NormalizedPosition, SymbolLocation::Position> NEnd(
171 IO, Value.End);
172 IO.mapRequired("End", NEnd->P);
173 }
174 };
175
176 template <> struct MappingTraits<SymbolInfo> {
mappingllvm::yaml::MappingTraits177 static void mapping(IO &io, SymbolInfo &SymInfo) {
178 // FIXME: expose other fields?
179 io.mapRequired("Kind", SymInfo.Kind);
180 io.mapRequired("Lang", SymInfo.Lang);
181 }
182 };
183
184 template <>
185 struct MappingTraits<clang::clangd::Symbol::IncludeHeaderWithReferences> {
mappingllvm::yaml::MappingTraits186 static void mapping(IO &io,
187 clang::clangd::Symbol::IncludeHeaderWithReferences &Inc) {
188 io.mapRequired("Header", Inc.IncludeHeader);
189 io.mapRequired("References", Inc.References);
190 }
191 };
192
193 template <> struct MappingTraits<Symbol> {
mappingllvm::yaml::MappingTraits194 static void mapping(IO &IO, Symbol &Sym) {
195 MappingNormalization<NormalizedSymbolID, SymbolID> NSymbolID(IO, Sym.ID);
196 MappingNormalization<NormalizedSymbolFlag, Symbol::SymbolFlag> NSymbolFlag(
197 IO, Sym.Flags);
198 MappingNormalization<NormalizedSymbolOrigin, SymbolOrigin> NSymbolOrigin(
199 IO, Sym.Origin);
200 IO.mapRequired("ID", NSymbolID->HexString);
201 IO.mapRequired("Name", Sym.Name);
202 IO.mapRequired("Scope", Sym.Scope);
203 IO.mapRequired("SymInfo", Sym.SymInfo);
204 IO.mapOptional("CanonicalDeclaration", Sym.CanonicalDeclaration,
205 SymbolLocation());
206 IO.mapOptional("Definition", Sym.Definition, SymbolLocation());
207 IO.mapOptional("References", Sym.References, 0u);
208 IO.mapOptional("Origin", NSymbolOrigin->Origin);
209 IO.mapOptional("Flags", NSymbolFlag->Flag);
210 IO.mapOptional("Signature", Sym.Signature);
211 IO.mapOptional("TemplateSpecializationArgs",
212 Sym.TemplateSpecializationArgs);
213 IO.mapOptional("CompletionSnippetSuffix", Sym.CompletionSnippetSuffix);
214 IO.mapOptional("Documentation", Sym.Documentation);
215 IO.mapOptional("ReturnType", Sym.ReturnType);
216 IO.mapOptional("Type", Sym.Type);
217 IO.mapOptional("IncludeHeaders", Sym.IncludeHeaders);
218 }
219 };
220
221 template <> struct ScalarEnumerationTraits<SymbolLanguage> {
enumerationllvm::yaml::ScalarEnumerationTraits222 static void enumeration(IO &IO, SymbolLanguage &Value) {
223 IO.enumCase(Value, "C", SymbolLanguage::C);
224 IO.enumCase(Value, "Cpp", SymbolLanguage::CXX);
225 IO.enumCase(Value, "ObjC", SymbolLanguage::ObjC);
226 IO.enumCase(Value, "Swift", SymbolLanguage::Swift);
227 }
228 };
229
230 template <> struct ScalarEnumerationTraits<SymbolKind> {
enumerationllvm::yaml::ScalarEnumerationTraits231 static void enumeration(IO &IO, SymbolKind &Value) {
232 #define DEFINE_ENUM(name) IO.enumCase(Value, #name, SymbolKind::name)
233
234 DEFINE_ENUM(Unknown);
235 DEFINE_ENUM(Function);
236 DEFINE_ENUM(Module);
237 DEFINE_ENUM(Namespace);
238 DEFINE_ENUM(NamespaceAlias);
239 DEFINE_ENUM(Macro);
240 DEFINE_ENUM(Enum);
241 DEFINE_ENUM(Struct);
242 DEFINE_ENUM(Class);
243 DEFINE_ENUM(Protocol);
244 DEFINE_ENUM(Extension);
245 DEFINE_ENUM(Union);
246 DEFINE_ENUM(TypeAlias);
247 DEFINE_ENUM(Function);
248 DEFINE_ENUM(Variable);
249 DEFINE_ENUM(Field);
250 DEFINE_ENUM(EnumConstant);
251 DEFINE_ENUM(InstanceMethod);
252 DEFINE_ENUM(ClassMethod);
253 DEFINE_ENUM(StaticMethod);
254 DEFINE_ENUM(InstanceProperty);
255 DEFINE_ENUM(ClassProperty);
256 DEFINE_ENUM(StaticProperty);
257 DEFINE_ENUM(Constructor);
258 DEFINE_ENUM(Destructor);
259 DEFINE_ENUM(ConversionFunction);
260 DEFINE_ENUM(Parameter);
261 DEFINE_ENUM(Using);
262
263 #undef DEFINE_ENUM
264 }
265 };
266
267 template <> struct MappingTraits<RefBundle> {
mappingllvm::yaml::MappingTraits268 static void mapping(IO &IO, RefBundle &Refs) {
269 MappingNormalization<NormalizedSymbolID, SymbolID> NSymbolID(IO,
270 Refs.first);
271 IO.mapRequired("ID", NSymbolID->HexString);
272 IO.mapRequired("References", Refs.second);
273 }
274 };
275
276 struct NormalizedRefKind {
NormalizedRefKindllvm::yaml::NormalizedRefKind277 NormalizedRefKind(IO &) {}
NormalizedRefKindllvm::yaml::NormalizedRefKind278 NormalizedRefKind(IO &, RefKind O) { Kind = static_cast<uint8_t>(O); }
279
denormalizellvm::yaml::NormalizedRefKind280 RefKind denormalize(IO &) { return static_cast<RefKind>(Kind); }
281
282 uint8_t Kind = 0;
283 };
284
285 template <> struct MappingTraits<Ref> {
mappingllvm::yaml::MappingTraits286 static void mapping(IO &IO, Ref &R) {
287 MappingNormalization<NormalizedRefKind, RefKind> NKind(IO, R.Kind);
288 IO.mapRequired("Kind", NKind->Kind);
289 IO.mapRequired("Location", R.Location);
290 }
291 };
292
293 struct NormalizedSymbolRole {
NormalizedSymbolRolellvm::yaml::NormalizedSymbolRole294 NormalizedSymbolRole(IO &) {}
NormalizedSymbolRolellvm::yaml::NormalizedSymbolRole295 NormalizedSymbolRole(IO &IO, RelationKind R) {
296 Kind = static_cast<uint8_t>(R);
297 }
298
denormalizellvm::yaml::NormalizedSymbolRole299 RelationKind denormalize(IO &IO) { return static_cast<RelationKind>(Kind); }
300
301 uint8_t Kind = 0;
302 };
303
304 template <> struct MappingTraits<SymbolID> {
mappingllvm::yaml::MappingTraits305 static void mapping(IO &IO, SymbolID &ID) {
306 MappingNormalization<NormalizedSymbolID, SymbolID> NSymbolID(IO, ID);
307 IO.mapRequired("ID", NSymbolID->HexString);
308 }
309 };
310
311 template <> struct MappingTraits<Relation> {
mappingllvm::yaml::MappingTraits312 static void mapping(IO &IO, Relation &Relation) {
313 MappingNormalization<NormalizedSymbolRole, RelationKind> NRole(
314 IO, Relation.Predicate);
315 IO.mapRequired("Subject", Relation.Subject);
316 IO.mapRequired("Predicate", NRole->Kind);
317 IO.mapRequired("Object", Relation.Object);
318 }
319 };
320
321 struct NormalizedSourceFlag {
NormalizedSourceFlagllvm::yaml::NormalizedSourceFlag322 NormalizedSourceFlag(IO &) {}
NormalizedSourceFlagllvm::yaml::NormalizedSourceFlag323 NormalizedSourceFlag(IO &, IncludeGraphNode::SourceFlag O) {
324 Flag = static_cast<uint8_t>(O);
325 }
326
denormalizellvm::yaml::NormalizedSourceFlag327 IncludeGraphNode::SourceFlag denormalize(IO &) {
328 return static_cast<IncludeGraphNode::SourceFlag>(Flag);
329 }
330
331 uint8_t Flag = 0;
332 };
333
334 struct NormalizedFileDigest {
NormalizedFileDigestllvm::yaml::NormalizedFileDigest335 NormalizedFileDigest(IO &) {}
NormalizedFileDigestllvm::yaml::NormalizedFileDigest336 NormalizedFileDigest(IO &, const FileDigest &Digest) {
337 HexString = llvm::toHex(Digest);
338 }
339
denormalizellvm::yaml::NormalizedFileDigest340 FileDigest denormalize(IO &I) {
341 FileDigest Digest;
342 if (HexString.size() == Digest.size() * 2 &&
343 llvm::all_of(HexString, llvm::isHexDigit)) {
344 memcpy(Digest.data(), llvm::fromHex(HexString).data(), Digest.size());
345 } else {
346 I.setError(std::string("Bad hex file digest: ") + HexString);
347 }
348 return Digest;
349 }
350
351 std::string HexString;
352 };
353
354 template <> struct MappingTraits<IncludeGraphNode> {
mappingllvm::yaml::MappingTraits355 static void mapping(IO &IO, IncludeGraphNode &Node) {
356 IO.mapRequired("URI", Node.URI);
357 MappingNormalization<NormalizedSourceFlag, IncludeGraphNode::SourceFlag>
358 NSourceFlag(IO, Node.Flags);
359 IO.mapRequired("Flags", NSourceFlag->Flag);
360 MappingNormalization<NormalizedFileDigest, FileDigest> NDigest(IO,
361 Node.Digest);
362 IO.mapRequired("Digest", NDigest->HexString);
363 IO.mapRequired("DirectIncludes", Node.DirectIncludes);
364 }
365 };
366
367 template <> struct MappingTraits<CompileCommandYAML> {
mappingllvm::yaml::MappingTraits368 static void mapping(IO &IO, CompileCommandYAML &Cmd) {
369 IO.mapRequired("Directory", Cmd.Directory);
370 IO.mapRequired("CommandLine", Cmd.CommandLine);
371 }
372 };
373
374 template <> struct MappingTraits<VariantEntry> {
mappingllvm::yaml::MappingTraits375 static void mapping(IO &IO, VariantEntry &Variant) {
376 if (IO.mapTag("!Symbol", Variant.Symbol.hasValue())) {
377 if (!IO.outputting())
378 Variant.Symbol.emplace();
379 MappingTraits<Symbol>::mapping(IO, *Variant.Symbol);
380 } else if (IO.mapTag("!Refs", Variant.Refs.hasValue())) {
381 if (!IO.outputting())
382 Variant.Refs.emplace();
383 MappingTraits<RefBundle>::mapping(IO, *Variant.Refs);
384 } else if (IO.mapTag("!Relations", Variant.Relation.hasValue())) {
385 if (!IO.outputting())
386 Variant.Relation.emplace();
387 MappingTraits<Relation>::mapping(IO, *Variant.Relation);
388 } else if (IO.mapTag("!Source", Variant.Source.hasValue())) {
389 if (!IO.outputting())
390 Variant.Source.emplace();
391 MappingTraits<IncludeGraphNode>::mapping(IO, *Variant.Source);
392 } else if (IO.mapTag("!Cmd", Variant.Cmd.hasValue())) {
393 if (!IO.outputting())
394 Variant.Cmd.emplace();
395 MappingTraits<CompileCommandYAML>::mapping(
396 IO, static_cast<CompileCommandYAML &>(*Variant.Cmd));
397 }
398 }
399 };
400
401 } // namespace yaml
402 } // namespace llvm
403
404 namespace clang {
405 namespace clangd {
406
writeYAML(const IndexFileOut & O,llvm::raw_ostream & OS)407 void writeYAML(const IndexFileOut &O, llvm::raw_ostream &OS) {
408 llvm::yaml::Output Yout(OS);
409 for (const auto &Sym : *O.Symbols) {
410 VariantEntry Entry;
411 Entry.Symbol = Sym;
412 Yout << Entry;
413 }
414 if (O.Refs)
415 for (auto &Sym : *O.Refs) {
416 VariantEntry Entry;
417 Entry.Refs = Sym;
418 Yout << Entry;
419 }
420 if (O.Relations)
421 for (auto &R : *O.Relations) {
422 VariantEntry Entry;
423 Entry.Relation = R;
424 Yout << Entry;
425 }
426 if (O.Sources) {
427 for (const auto &Source : *O.Sources) {
428 VariantEntry Entry;
429 Entry.Source = Source.getValue();
430 Yout << Entry;
431 }
432 }
433 if (O.Cmd) {
434 VariantEntry Entry;
435 Entry.Cmd = *O.Cmd;
436 Yout << Entry;
437 }
438 }
439
readYAML(llvm::StringRef Data)440 llvm::Expected<IndexFileIn> readYAML(llvm::StringRef Data) {
441 SymbolSlab::Builder Symbols;
442 RefSlab::Builder Refs;
443 RelationSlab::Builder Relations;
444 llvm::BumpPtrAllocator
445 Arena; // store the underlying data of Position::FileURI.
446 llvm::UniqueStringSaver Strings(Arena);
447 llvm::yaml::Input Yin(Data, &Strings);
448 IncludeGraph Sources;
449 llvm::Optional<tooling::CompileCommand> Cmd;
450 while (Yin.setCurrentDocument()) {
451 llvm::yaml::EmptyContext Ctx;
452 VariantEntry Variant;
453 yamlize(Yin, Variant, true, Ctx);
454 if (Yin.error())
455 return llvm::errorCodeToError(Yin.error());
456
457 if (Variant.Symbol)
458 Symbols.insert(*Variant.Symbol);
459 if (Variant.Refs)
460 for (const auto &Ref : Variant.Refs->second)
461 Refs.insert(Variant.Refs->first, Ref);
462 if (Variant.Relation)
463 Relations.insert(*Variant.Relation);
464 if (Variant.Source) {
465 auto &IGN = Variant.Source.getValue();
466 auto Entry = Sources.try_emplace(IGN.URI).first;
467 Entry->getValue() = std::move(IGN);
468 // Fixup refs to refer to map keys which will live on
469 Entry->getValue().URI = Entry->getKey();
470 for (auto &Include : Entry->getValue().DirectIncludes)
471 Include = Sources.try_emplace(Include).first->getKey();
472 }
473 if (Variant.Cmd)
474 Cmd = *Variant.Cmd;
475 Yin.nextDocument();
476 }
477
478 IndexFileIn Result;
479 Result.Symbols.emplace(std::move(Symbols).build());
480 Result.Refs.emplace(std::move(Refs).build());
481 Result.Relations.emplace(std::move(Relations).build());
482 if (Sources.size())
483 Result.Sources = std::move(Sources);
484 Result.Cmd = std::move(Cmd);
485 return std::move(Result);
486 }
487
toYAML(const Symbol & S)488 std::string toYAML(const Symbol &S) {
489 std::string Buf;
490 {
491 llvm::raw_string_ostream OS(Buf);
492 llvm::yaml::Output Yout(OS);
493 Symbol Sym = S; // copy: Yout<< requires mutability.
494 Yout << Sym;
495 }
496 return Buf;
497 }
498
toYAML(const std::pair<SymbolID,llvm::ArrayRef<Ref>> & Data)499 std::string toYAML(const std::pair<SymbolID, llvm::ArrayRef<Ref>> &Data) {
500 RefBundle Refs = {Data.first, Data.second};
501 std::string Buf;
502 {
503 llvm::raw_string_ostream OS(Buf);
504 llvm::yaml::Output Yout(OS);
505 Yout << Refs;
506 }
507 return Buf;
508 }
509
toYAML(const Relation & R)510 std::string toYAML(const Relation &R) {
511 std::string Buf;
512 {
513 llvm::raw_string_ostream OS(Buf);
514 llvm::yaml::Output Yout(OS);
515 Relation Rel = R; // copy: Yout<< requires mutability.
516 Yout << Rel;
517 }
518 return Buf;
519 }
520
toYAML(const Ref & R)521 std::string toYAML(const Ref &R) {
522 std::string Buf;
523 {
524 llvm::raw_string_ostream OS(Buf);
525 llvm::yaml::Output Yout(OS);
526 Ref Reference = R; // copy: Yout<< requires mutability.
527 Yout << Reference;
528 }
529 return Buf;
530 }
531
532 llvm::Expected<clangd::Symbol>
symbolFromYAML(StringRef YAML,llvm::UniqueStringSaver * Strings)533 symbolFromYAML(StringRef YAML, llvm::UniqueStringSaver *Strings) {
534 clangd::Symbol Deserialized;
535 llvm::yaml::Input YAMLInput(YAML, Strings);
536 if (YAMLInput.error())
537 return error("Unable to deserialize Symbol from YAML: {0}", YAML);
538 YAMLInput >> Deserialized;
539 return Deserialized;
540 }
541
refFromYAML(StringRef YAML,llvm::UniqueStringSaver * Strings)542 llvm::Expected<clangd::Ref> refFromYAML(StringRef YAML,
543 llvm::UniqueStringSaver *Strings) {
544 clangd::Ref Deserialized;
545 llvm::yaml::Input YAMLInput(YAML, Strings);
546 if (YAMLInput.error())
547 return error("Unable to deserialize Symbol from YAML: {0}", YAML);
548 YAMLInput >> Deserialized;
549 return Deserialized;
550 }
551
552 } // namespace clangd
553 } // namespace clang
554