1 //===--- Registry.cpp - Matcher registry -------------------------===//
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 /// \file
11 /// \brief Registry map populated at static initialization time.
12 ///
13 //===------------------------------------------------------------===//
14
15 #include "clang/ASTMatchers/Dynamic/Registry.h"
16 #include "Marshallers.h"
17 #include "clang/ASTMatchers/ASTMatchers.h"
18 #include "llvm/ADT/STLExtras.h"
19 #include "llvm/ADT/StringMap.h"
20 #include "llvm/ADT/StringRef.h"
21 #include "llvm/Support/ManagedStatic.h"
22 #include <set>
23 #include <utility>
24
25 using namespace clang::ast_type_traits;
26
27 namespace clang {
28 namespace ast_matchers {
29 namespace dynamic {
30 namespace {
31
32 using internal::MatcherDescriptor;
33
34 typedef llvm::StringMap<const MatcherDescriptor *> ConstructorMap;
35 class RegistryMaps {
36 public:
37 RegistryMaps();
38 ~RegistryMaps();
39
constructors() const40 const ConstructorMap &constructors() const { return Constructors; }
41
42 private:
43 void registerMatcher(StringRef MatcherName, MatcherDescriptor *Callback);
44 ConstructorMap Constructors;
45 };
46
registerMatcher(StringRef MatcherName,MatcherDescriptor * Callback)47 void RegistryMaps::registerMatcher(StringRef MatcherName,
48 MatcherDescriptor *Callback) {
49 assert(Constructors.find(MatcherName) == Constructors.end());
50 Constructors[MatcherName] = Callback;
51 }
52
53 #define REGISTER_MATCHER(name) \
54 registerMatcher(#name, internal::makeMatcherAutoMarshall( \
55 ::clang::ast_matchers::name, #name));
56
57 #define SPECIFIC_MATCHER_OVERLOAD(name, Id) \
58 static_cast< ::clang::ast_matchers::name##_Type##Id>( \
59 ::clang::ast_matchers::name)
60
61 #define REGISTER_OVERLOADED_2(name) \
62 do { \
63 MatcherDescriptor *Callbacks[] = { \
64 internal::makeMatcherAutoMarshall(SPECIFIC_MATCHER_OVERLOAD(name, 0), \
65 #name), \
66 internal::makeMatcherAutoMarshall(SPECIFIC_MATCHER_OVERLOAD(name, 1), \
67 #name) \
68 }; \
69 registerMatcher(#name, \
70 new internal::OverloadedMatcherDescriptor(Callbacks)); \
71 } while (0)
72
73 /// \brief Generate a registry map with all the known matchers.
RegistryMaps()74 RegistryMaps::RegistryMaps() {
75 // TODO: Here is the list of the missing matchers, grouped by reason.
76 //
77 // Need Variant/Parser fixes:
78 // ofKind
79 //
80 // Polymorphic + argument overload:
81 // findAll
82 //
83 // Other:
84 // equals
85 // equalsNode
86
87 REGISTER_OVERLOADED_2(callee);
88 REGISTER_OVERLOADED_2(hasPrefix);
89 REGISTER_OVERLOADED_2(hasType);
90 REGISTER_OVERLOADED_2(isDerivedFrom);
91 REGISTER_OVERLOADED_2(isSameOrDerivedFrom);
92 REGISTER_OVERLOADED_2(loc);
93 REGISTER_OVERLOADED_2(pointsTo);
94 REGISTER_OVERLOADED_2(references);
95 REGISTER_OVERLOADED_2(thisPointerType);
96
97 REGISTER_MATCHER(accessSpecDecl);
98 REGISTER_MATCHER(addrLabelExpr);
99 REGISTER_MATCHER(alignOfExpr);
100 REGISTER_MATCHER(allOf);
101 REGISTER_MATCHER(anyOf);
102 REGISTER_MATCHER(anything);
103 REGISTER_MATCHER(argumentCountIs);
104 REGISTER_MATCHER(arraySubscriptExpr);
105 REGISTER_MATCHER(arrayType);
106 REGISTER_MATCHER(asmStmt);
107 REGISTER_MATCHER(asString);
108 REGISTER_MATCHER(atomicExpr);
109 REGISTER_MATCHER(atomicType);
110 REGISTER_MATCHER(autoType);
111 REGISTER_MATCHER(binaryOperator);
112 REGISTER_MATCHER(binaryConditionalOperator);
113 REGISTER_MATCHER(blockPointerType);
114 REGISTER_MATCHER(booleanType);
115 REGISTER_MATCHER(breakStmt);
116 REGISTER_MATCHER(builtinType);
117 REGISTER_MATCHER(callExpr);
118 REGISTER_MATCHER(caseStmt);
119 REGISTER_MATCHER(castExpr);
120 REGISTER_MATCHER(characterLiteral);
121 REGISTER_MATCHER(classTemplateDecl);
122 REGISTER_MATCHER(classTemplateSpecializationDecl);
123 REGISTER_MATCHER(complexType);
124 REGISTER_MATCHER(compoundLiteralExpr);
125 REGISTER_MATCHER(compoundStmt);
126 REGISTER_MATCHER(conditionalOperator);
127 REGISTER_MATCHER(constantArrayType);
128 REGISTER_MATCHER(containsDeclaration);
129 REGISTER_MATCHER(continueStmt);
130 REGISTER_MATCHER(cStyleCastExpr);
131 REGISTER_MATCHER(cudaKernelCallExpr);
132 REGISTER_MATCHER(cxxBindTemporaryExpr);
133 REGISTER_MATCHER(cxxBoolLiteral);
134 REGISTER_MATCHER(cxxCatchStmt);
135 REGISTER_MATCHER(cxxConstCastExpr);
136 REGISTER_MATCHER(cxxConstructExpr);
137 REGISTER_MATCHER(cxxConstructorDecl);
138 REGISTER_MATCHER(cxxConversionDecl);
139 REGISTER_MATCHER(cxxCtorInitializer);
140 REGISTER_MATCHER(cxxDefaultArgExpr);
141 REGISTER_MATCHER(cxxDeleteExpr);
142 REGISTER_MATCHER(cxxDestructorDecl);
143 REGISTER_MATCHER(cxxDynamicCastExpr);
144 REGISTER_MATCHER(cxxForRangeStmt);
145 REGISTER_MATCHER(cxxFunctionalCastExpr);
146 REGISTER_MATCHER(cxxMemberCallExpr);
147 REGISTER_MATCHER(cxxMethodDecl);
148 REGISTER_MATCHER(cxxNewExpr);
149 REGISTER_MATCHER(cxxNullPtrLiteralExpr);
150 REGISTER_MATCHER(cxxOperatorCallExpr);
151 REGISTER_MATCHER(cxxRecordDecl);
152 REGISTER_MATCHER(cxxReinterpretCastExpr);
153 REGISTER_MATCHER(cxxStaticCastExpr);
154 REGISTER_MATCHER(cxxTemporaryObjectExpr);
155 REGISTER_MATCHER(cxxThisExpr);
156 REGISTER_MATCHER(cxxThrowExpr);
157 REGISTER_MATCHER(cxxTryStmt);
158 REGISTER_MATCHER(cxxUnresolvedConstructExpr);
159 REGISTER_MATCHER(decayedType);
160 REGISTER_MATCHER(decl);
161 REGISTER_MATCHER(declaratorDecl);
162 REGISTER_MATCHER(declCountIs);
163 REGISTER_MATCHER(declRefExpr);
164 REGISTER_MATCHER(declStmt);
165 REGISTER_MATCHER(defaultStmt);
166 REGISTER_MATCHER(dependentSizedArrayType);
167 REGISTER_MATCHER(designatedInitExpr);
168 REGISTER_MATCHER(designatorCountIs);
169 REGISTER_MATCHER(doStmt);
170 REGISTER_MATCHER(eachOf);
171 REGISTER_MATCHER(elaboratedType);
172 REGISTER_MATCHER(enumConstantDecl);
173 REGISTER_MATCHER(enumDecl);
174 REGISTER_MATCHER(enumType);
175 REGISTER_MATCHER(equalsBoundNode);
176 REGISTER_MATCHER(equalsIntegralValue);
177 REGISTER_MATCHER(explicitCastExpr);
178 REGISTER_MATCHER(expr);
179 REGISTER_MATCHER(exprWithCleanups);
180 REGISTER_MATCHER(fieldDecl);
181 REGISTER_MATCHER(floatLiteral);
182 REGISTER_MATCHER(forEach);
183 REGISTER_MATCHER(forEachArgumentWithParam);
184 REGISTER_MATCHER(forEachConstructorInitializer);
185 REGISTER_MATCHER(forEachDescendant);
186 REGISTER_MATCHER(forEachSwitchCase);
187 REGISTER_MATCHER(forField);
188 REGISTER_MATCHER(forFunction);
189 REGISTER_MATCHER(forStmt);
190 REGISTER_MATCHER(friendDecl);
191 REGISTER_MATCHER(functionDecl);
192 REGISTER_MATCHER(functionProtoType);
193 REGISTER_MATCHER(functionTemplateDecl);
194 REGISTER_MATCHER(functionType);
195 REGISTER_MATCHER(gnuNullExpr);
196 REGISTER_MATCHER(gotoStmt);
197 REGISTER_MATCHER(has);
198 REGISTER_MATCHER(hasAncestor);
199 REGISTER_MATCHER(hasAnyArgument);
200 REGISTER_MATCHER(hasAnyConstructorInitializer);
201 REGISTER_MATCHER(hasAnyName);
202 REGISTER_MATCHER(hasAnyParameter);
203 REGISTER_MATCHER(hasAnySubstatement);
204 REGISTER_MATCHER(hasAnyTemplateArgument);
205 REGISTER_MATCHER(hasAnyUsingShadowDecl);
206 REGISTER_MATCHER(hasArgument);
207 REGISTER_MATCHER(hasArgumentOfType);
208 REGISTER_MATCHER(hasAttr);
209 REGISTER_MATCHER(hasAutomaticStorageDuration);
210 REGISTER_MATCHER(hasBase);
211 REGISTER_MATCHER(hasBitWidth);
212 REGISTER_MATCHER(hasBody);
213 REGISTER_MATCHER(hasCanonicalType);
214 REGISTER_MATCHER(hasCaseConstant);
215 REGISTER_MATCHER(hasCastKind);
216 REGISTER_MATCHER(hasCondition);
217 REGISTER_MATCHER(hasConditionVariableStatement);
218 REGISTER_MATCHER(hasDecayedType);
219 REGISTER_MATCHER(hasDeclaration);
220 REGISTER_MATCHER(hasDeclContext);
221 REGISTER_MATCHER(hasDeducedType);
222 REGISTER_MATCHER(hasDescendant);
223 REGISTER_MATCHER(hasDestinationType);
224 REGISTER_MATCHER(hasDynamicExceptionSpec);
225 REGISTER_MATCHER(hasEitherOperand);
226 REGISTER_MATCHER(hasElementType);
227 REGISTER_MATCHER(hasElse);
228 REGISTER_MATCHER(hasFalseExpression);
229 REGISTER_MATCHER(hasGlobalStorage);
230 REGISTER_MATCHER(hasImplicitDestinationType);
231 REGISTER_MATCHER(hasIncrement);
232 REGISTER_MATCHER(hasIndex);
233 REGISTER_MATCHER(hasInitializer);
234 REGISTER_MATCHER(hasKeywordSelector);
235 REGISTER_MATCHER(hasLHS);
236 REGISTER_MATCHER(hasLocalQualifiers);
237 REGISTER_MATCHER(hasLocalStorage);
238 REGISTER_MATCHER(hasLoopInit);
239 REGISTER_MATCHER(hasLoopVariable);
240 REGISTER_MATCHER(hasMethod);
241 REGISTER_MATCHER(hasName);
242 REGISTER_MATCHER(hasNullSelector);
243 REGISTER_MATCHER(hasObjectExpression);
244 REGISTER_MATCHER(hasOperatorName);
245 REGISTER_MATCHER(hasOverloadedOperatorName);
246 REGISTER_MATCHER(hasParameter);
247 REGISTER_MATCHER(hasParent);
248 REGISTER_MATCHER(hasQualifier);
249 REGISTER_MATCHER(hasRangeInit);
250 REGISTER_MATCHER(hasReceiverType);
251 REGISTER_MATCHER(hasReturnValue);
252 REGISTER_MATCHER(hasRHS);
253 REGISTER_MATCHER(hasSelector);
254 REGISTER_MATCHER(hasSingleDecl);
255 REGISTER_MATCHER(hasSize);
256 REGISTER_MATCHER(hasSizeExpr);
257 REGISTER_MATCHER(hasSourceExpression);
258 REGISTER_MATCHER(hasStaticStorageDuration);
259 REGISTER_MATCHER(hasSyntacticForm);
260 REGISTER_MATCHER(hasTargetDecl);
261 REGISTER_MATCHER(hasTemplateArgument);
262 REGISTER_MATCHER(hasThen);
263 REGISTER_MATCHER(hasThreadStorageDuration);
264 REGISTER_MATCHER(hasTrueExpression);
265 REGISTER_MATCHER(hasTypeLoc);
266 REGISTER_MATCHER(hasUnaryOperand);
267 REGISTER_MATCHER(hasUnarySelector);
268 REGISTER_MATCHER(hasValueType);
269 REGISTER_MATCHER(ifStmt);
270 REGISTER_MATCHER(ignoringImplicit);
271 REGISTER_MATCHER(ignoringImpCasts);
272 REGISTER_MATCHER(ignoringParenCasts);
273 REGISTER_MATCHER(ignoringParenImpCasts);
274 REGISTER_MATCHER(ignoringParens);
275 REGISTER_MATCHER(implicitCastExpr);
276 REGISTER_MATCHER(implicitValueInitExpr);
277 REGISTER_MATCHER(incompleteArrayType);
278 REGISTER_MATCHER(initListExpr);
279 REGISTER_MATCHER(injectedClassNameType);
280 REGISTER_MATCHER(innerType);
281 REGISTER_MATCHER(integerLiteral);
282 REGISTER_MATCHER(isAnonymous);
283 REGISTER_MATCHER(isAnyCharacter);
284 REGISTER_MATCHER(isAnyPointer);
285 REGISTER_MATCHER(isArrow);
286 REGISTER_MATCHER(isBaseInitializer);
287 REGISTER_MATCHER(isBitField);
288 REGISTER_MATCHER(isCatchAll);
289 REGISTER_MATCHER(isClass);
290 REGISTER_MATCHER(isConst);
291 REGISTER_MATCHER(isConstQualified);
292 REGISTER_MATCHER(isCopyAssignmentOperator);
293 REGISTER_MATCHER(isCopyConstructor);
294 REGISTER_MATCHER(isDefaultConstructor);
295 REGISTER_MATCHER(isDefaulted);
296 REGISTER_MATCHER(isDefinition);
297 REGISTER_MATCHER(isDeleted);
298 REGISTER_MATCHER(isExceptionVariable);
299 REGISTER_MATCHER(isExplicit);
300 REGISTER_MATCHER(isExplicitTemplateSpecialization);
301 REGISTER_MATCHER(isExpr);
302 REGISTER_MATCHER(isExternC);
303 REGISTER_MATCHER(isFinal);
304 REGISTER_MATCHER(isInline);
305 REGISTER_MATCHER(isImplicit);
306 REGISTER_MATCHER(isExpansionInFileMatching);
307 REGISTER_MATCHER(isExpansionInMainFile);
308 REGISTER_MATCHER(isInstantiated);
309 REGISTER_MATCHER(isExpansionInSystemHeader);
310 REGISTER_MATCHER(isInteger);
311 REGISTER_MATCHER(isIntegral);
312 REGISTER_MATCHER(isInTemplateInstantiation);
313 REGISTER_MATCHER(isLambda);
314 REGISTER_MATCHER(isListInitialization);
315 REGISTER_MATCHER(isMemberInitializer);
316 REGISTER_MATCHER(isMoveAssignmentOperator);
317 REGISTER_MATCHER(isMoveConstructor);
318 REGISTER_MATCHER(isNoThrow);
319 REGISTER_MATCHER(isOverride);
320 REGISTER_MATCHER(isPrivate);
321 REGISTER_MATCHER(isProtected);
322 REGISTER_MATCHER(isPublic);
323 REGISTER_MATCHER(isPure);
324 REGISTER_MATCHER(isSignedInteger);
325 REGISTER_MATCHER(isStruct);
326 REGISTER_MATCHER(isTemplateInstantiation);
327 REGISTER_MATCHER(isUnion);
328 REGISTER_MATCHER(isUnsignedInteger);
329 REGISTER_MATCHER(isVariadic);
330 REGISTER_MATCHER(isVirtual);
331 REGISTER_MATCHER(isVirtualAsWritten);
332 REGISTER_MATCHER(isVolatileQualified);
333 REGISTER_MATCHER(isWritten);
334 REGISTER_MATCHER(labelDecl);
335 REGISTER_MATCHER(labelStmt);
336 REGISTER_MATCHER(lambdaExpr);
337 REGISTER_MATCHER(lValueReferenceType);
338 REGISTER_MATCHER(matchesName);
339 REGISTER_MATCHER(matchesSelector);
340 REGISTER_MATCHER(materializeTemporaryExpr);
341 REGISTER_MATCHER(member);
342 REGISTER_MATCHER(memberExpr);
343 REGISTER_MATCHER(memberPointerType);
344 REGISTER_MATCHER(namedDecl);
345 REGISTER_MATCHER(namespaceAliasDecl);
346 REGISTER_MATCHER(namespaceDecl);
347 REGISTER_MATCHER(namesType);
348 REGISTER_MATCHER(nestedNameSpecifier);
349 REGISTER_MATCHER(nestedNameSpecifierLoc);
350 REGISTER_MATCHER(nullPointerConstant);
351 REGISTER_MATCHER(nullStmt);
352 REGISTER_MATCHER(numSelectorArgs);
353 REGISTER_MATCHER(ofClass);
354 REGISTER_MATCHER(objcInterfaceDecl);
355 REGISTER_MATCHER(objcMessageExpr);
356 REGISTER_MATCHER(objcObjectPointerType);
357 REGISTER_MATCHER(on);
358 REGISTER_MATCHER(onImplicitObjectArgument);
359 REGISTER_MATCHER(opaqueValueExpr);
360 REGISTER_MATCHER(parameterCountIs);
361 REGISTER_MATCHER(parenExpr);
362 REGISTER_MATCHER(parenListExpr);
363 REGISTER_MATCHER(parenType);
364 REGISTER_MATCHER(parmVarDecl);
365 REGISTER_MATCHER(pointee);
366 REGISTER_MATCHER(pointerType);
367 REGISTER_MATCHER(predefinedExpr);
368 REGISTER_MATCHER(qualType);
369 REGISTER_MATCHER(realFloatingPointType);
370 REGISTER_MATCHER(recordDecl);
371 REGISTER_MATCHER(recordType);
372 REGISTER_MATCHER(referenceType);
373 REGISTER_MATCHER(refersToDeclaration);
374 REGISTER_MATCHER(refersToIntegralType);
375 REGISTER_MATCHER(refersToType);
376 REGISTER_MATCHER(requiresZeroInitialization);
377 REGISTER_MATCHER(returns);
378 REGISTER_MATCHER(returnStmt);
379 REGISTER_MATCHER(rValueReferenceType);
380 REGISTER_MATCHER(sizeOfExpr);
381 REGISTER_MATCHER(specifiesNamespace);
382 REGISTER_MATCHER(specifiesType);
383 REGISTER_MATCHER(specifiesTypeLoc);
384 REGISTER_MATCHER(statementCountIs);
385 REGISTER_MATCHER(staticAssertDecl);
386 REGISTER_MATCHER(stmt);
387 REGISTER_MATCHER(stmtExpr);
388 REGISTER_MATCHER(stringLiteral);
389 REGISTER_MATCHER(substNonTypeTemplateParmExpr);
390 REGISTER_MATCHER(substTemplateTypeParmType);
391 REGISTER_MATCHER(switchCase);
392 REGISTER_MATCHER(switchStmt);
393 REGISTER_MATCHER(templateArgument);
394 REGISTER_MATCHER(templateArgumentCountIs);
395 REGISTER_MATCHER(templateSpecializationType);
396 REGISTER_MATCHER(templateTypeParmType);
397 REGISTER_MATCHER(throughUsingDecl);
398 REGISTER_MATCHER(to);
399 REGISTER_MATCHER(translationUnitDecl);
400 REGISTER_MATCHER(type);
401 REGISTER_MATCHER(typedefDecl);
402 REGISTER_MATCHER(typedefNameDecl);
403 REGISTER_MATCHER(typedefType);
404 REGISTER_MATCHER(typeAliasDecl);
405 REGISTER_MATCHER(typeLoc);
406 REGISTER_MATCHER(unaryExprOrTypeTraitExpr);
407 REGISTER_MATCHER(unaryOperator);
408 REGISTER_MATCHER(unaryTransformType);
409 REGISTER_MATCHER(unless);
410 REGISTER_MATCHER(unresolvedLookupExpr);
411 REGISTER_MATCHER(unresolvedUsingTypenameDecl);
412 REGISTER_MATCHER(unresolvedUsingValueDecl);
413 REGISTER_MATCHER(userDefinedLiteral);
414 REGISTER_MATCHER(usingDecl);
415 REGISTER_MATCHER(usingDirectiveDecl);
416 REGISTER_MATCHER(valueDecl);
417 REGISTER_MATCHER(varDecl);
418 REGISTER_MATCHER(variableArrayType);
419 REGISTER_MATCHER(voidType);
420 REGISTER_MATCHER(whileStmt);
421 REGISTER_MATCHER(withInitializer);
422 }
423
~RegistryMaps()424 RegistryMaps::~RegistryMaps() {
425 llvm::DeleteContainerSeconds(Constructors);
426 }
427
428 static llvm::ManagedStatic<RegistryMaps> RegistryData;
429
430 } // anonymous namespace
431
432 // static
lookupMatcherCtor(StringRef MatcherName)433 llvm::Optional<MatcherCtor> Registry::lookupMatcherCtor(StringRef MatcherName) {
434 ConstructorMap::const_iterator it =
435 RegistryData->constructors().find(MatcherName);
436 return it == RegistryData->constructors().end()
437 ? llvm::Optional<MatcherCtor>()
438 : it->second;
439 }
440
441 namespace {
442
operator <<(llvm::raw_ostream & OS,const std::set<ASTNodeKind> & KS)443 llvm::raw_ostream &operator<<(llvm::raw_ostream &OS,
444 const std::set<ASTNodeKind> &KS) {
445 unsigned Count = 0;
446 for (std::set<ASTNodeKind>::const_iterator I = KS.begin(), E = KS.end();
447 I != E; ++I) {
448 if (I != KS.begin())
449 OS << "|";
450 if (Count++ == 3) {
451 OS << "...";
452 break;
453 }
454 OS << *I;
455 }
456 return OS;
457 }
458
459 } // namespace
460
getAcceptedCompletionTypes(ArrayRef<std::pair<MatcherCtor,unsigned>> Context)461 std::vector<ArgKind> Registry::getAcceptedCompletionTypes(
462 ArrayRef<std::pair<MatcherCtor, unsigned>> Context) {
463 ASTNodeKind InitialTypes[] = {
464 ASTNodeKind::getFromNodeKind<Decl>(),
465 ASTNodeKind::getFromNodeKind<QualType>(),
466 ASTNodeKind::getFromNodeKind<Type>(),
467 ASTNodeKind::getFromNodeKind<Stmt>(),
468 ASTNodeKind::getFromNodeKind<NestedNameSpecifier>(),
469 ASTNodeKind::getFromNodeKind<NestedNameSpecifierLoc>(),
470 ASTNodeKind::getFromNodeKind<TypeLoc>()};
471
472 // Starting with the above seed of acceptable top-level matcher types, compute
473 // the acceptable type set for the argument indicated by each context element.
474 std::set<ArgKind> TypeSet(std::begin(InitialTypes), std::end(InitialTypes));
475 for (const auto &CtxEntry : Context) {
476 MatcherCtor Ctor = CtxEntry.first;
477 unsigned ArgNumber = CtxEntry.second;
478 std::vector<ArgKind> NextTypeSet;
479 for (const ArgKind &Kind : TypeSet) {
480 if (Kind.getArgKind() == Kind.AK_Matcher &&
481 Ctor->isConvertibleTo(Kind.getMatcherKind()) &&
482 (Ctor->isVariadic() || ArgNumber < Ctor->getNumArgs()))
483 Ctor->getArgKinds(Kind.getMatcherKind(), ArgNumber, NextTypeSet);
484 }
485 TypeSet.clear();
486 TypeSet.insert(NextTypeSet.begin(), NextTypeSet.end());
487 }
488 return std::vector<ArgKind>(TypeSet.begin(), TypeSet.end());
489 }
490
491 std::vector<MatcherCompletion>
getMatcherCompletions(ArrayRef<ArgKind> AcceptedTypes)492 Registry::getMatcherCompletions(ArrayRef<ArgKind> AcceptedTypes) {
493 std::vector<MatcherCompletion> Completions;
494
495 // Search the registry for acceptable matchers.
496 for (const auto &M : RegistryData->constructors()) {
497 const auto *Matcher = M.getValue();
498 StringRef Name = M.getKey();
499
500 std::set<ASTNodeKind> RetKinds;
501 unsigned NumArgs = Matcher->isVariadic() ? 1 : Matcher->getNumArgs();
502 bool IsPolymorphic = Matcher->isPolymorphic();
503 std::vector<std::vector<ArgKind>> ArgsKinds(NumArgs);
504 unsigned MaxSpecificity = 0;
505 for (const ArgKind& Kind : AcceptedTypes) {
506 if (Kind.getArgKind() != Kind.AK_Matcher)
507 continue;
508 unsigned Specificity;
509 ASTNodeKind LeastDerivedKind;
510 if (Matcher->isConvertibleTo(Kind.getMatcherKind(), &Specificity,
511 &LeastDerivedKind)) {
512 if (MaxSpecificity < Specificity)
513 MaxSpecificity = Specificity;
514 RetKinds.insert(LeastDerivedKind);
515 for (unsigned Arg = 0; Arg != NumArgs; ++Arg)
516 Matcher->getArgKinds(Kind.getMatcherKind(), Arg, ArgsKinds[Arg]);
517 if (IsPolymorphic)
518 break;
519 }
520 }
521
522 if (!RetKinds.empty() && MaxSpecificity > 0) {
523 std::string Decl;
524 llvm::raw_string_ostream OS(Decl);
525
526 if (IsPolymorphic) {
527 OS << "Matcher<T> " << Name << "(Matcher<T>";
528 } else {
529 OS << "Matcher<" << RetKinds << "> " << Name << "(";
530 for (const std::vector<ArgKind> &Arg : ArgsKinds) {
531 if (&Arg != &ArgsKinds[0])
532 OS << ", ";
533
534 bool FirstArgKind = true;
535 std::set<ASTNodeKind> MatcherKinds;
536 // Two steps. First all non-matchers, then matchers only.
537 for (const ArgKind &AK : Arg) {
538 if (AK.getArgKind() == ArgKind::AK_Matcher) {
539 MatcherKinds.insert(AK.getMatcherKind());
540 } else {
541 if (!FirstArgKind) OS << "|";
542 FirstArgKind = false;
543 OS << AK.asString();
544 }
545 }
546 if (!MatcherKinds.empty()) {
547 if (!FirstArgKind) OS << "|";
548 OS << "Matcher<" << MatcherKinds << ">";
549 }
550 }
551 }
552 if (Matcher->isVariadic())
553 OS << "...";
554 OS << ")";
555
556 std::string TypedText = Name;
557 TypedText += "(";
558 if (ArgsKinds.empty())
559 TypedText += ")";
560 else if (ArgsKinds[0][0].getArgKind() == ArgKind::AK_String)
561 TypedText += "\"";
562
563 Completions.emplace_back(TypedText, OS.str(), MaxSpecificity);
564 }
565 }
566
567 return Completions;
568 }
569
570 // static
constructMatcher(MatcherCtor Ctor,SourceRange NameRange,ArrayRef<ParserValue> Args,Diagnostics * Error)571 VariantMatcher Registry::constructMatcher(MatcherCtor Ctor,
572 SourceRange NameRange,
573 ArrayRef<ParserValue> Args,
574 Diagnostics *Error) {
575 return Ctor->create(NameRange, Args, Error);
576 }
577
578 // static
constructBoundMatcher(MatcherCtor Ctor,SourceRange NameRange,StringRef BindID,ArrayRef<ParserValue> Args,Diagnostics * Error)579 VariantMatcher Registry::constructBoundMatcher(MatcherCtor Ctor,
580 SourceRange NameRange,
581 StringRef BindID,
582 ArrayRef<ParserValue> Args,
583 Diagnostics *Error) {
584 VariantMatcher Out = constructMatcher(Ctor, NameRange, Args, Error);
585 if (Out.isNull()) return Out;
586
587 llvm::Optional<DynTypedMatcher> Result = Out.getSingleMatcher();
588 if (Result.hasValue()) {
589 llvm::Optional<DynTypedMatcher> Bound = Result->tryBind(BindID);
590 if (Bound.hasValue()) {
591 return VariantMatcher::SingleMatcher(*Bound);
592 }
593 }
594 Error->addError(NameRange, Error->ET_RegistryNotBindable);
595 return VariantMatcher();
596 }
597
598 } // namespace dynamic
599 } // namespace ast_matchers
600 } // namespace clang
601