Registry.cpp revision 341825 
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/// Registry map populated at static initialization time.
12//
13//===----------------------------------------------------------------------===//
14
15#include "clang/ASTMatchers/Dynamic/Registry.h"
16#include "Marshallers.h"
17#include "clang/AST/ASTTypeTraits.h"
18#include "clang/ASTMatchers/ASTMatchers.h"
19#include "clang/ASTMatchers/Dynamic/Diagnostics.h"
20#include "clang/ASTMatchers/Dynamic/VariantValue.h"
21#include "llvm/ADT/Optional.h"
22#include "llvm/ADT/STLExtras.h"
23#include "llvm/ADT/StringMap.h"
24#include "llvm/ADT/StringRef.h"
25#include "llvm/Support/ManagedStatic.h"
26#include "llvm/Support/raw_ostream.h"
27#include <cassert>
28#include <iterator>
29#include <memory>
30#include <set>
31#include <string>
32#include <utility>
33#include <vector>
34
35using namespace clang::ast_type_traits;
36
37namespace clang {
38namespace ast_matchers {
39namespace dynamic {
40
41namespace {
42
43using internal::MatcherDescriptor;
44
45using ConstructorMap = llvm::StringMap<std::unique_ptr<const MatcherDescriptor>>;
46
47class RegistryMaps {
48public:
49  RegistryMaps();
50  ~RegistryMaps();
51
52  const ConstructorMap &constructors() const { return Constructors; }
53
54private:
55  void registerMatcher(StringRef MatcherName,
56                       std::unique_ptr<MatcherDescriptor> Callback);
57
58  ConstructorMap Constructors;
59};
60
61} // namespace
62
63void RegistryMaps::registerMatcher(
64    StringRef MatcherName, std::unique_ptr<MatcherDescriptor> Callback) {
65  assert(Constructors.find(MatcherName) == Constructors.end());
66  Constructors[MatcherName] = std::move(Callback);
67}
68
69#define REGISTER_MATCHER(name)                                                 \
70  registerMatcher(#name, internal::makeMatcherAutoMarshall(                    \
71                             ::clang::ast_matchers::name, #name));
72
73#define REGISTER_MATCHER_OVERLOAD(name)                                        \
74  registerMatcher(#name,                                                       \
75      llvm::make_unique<internal::OverloadedMatcherDescriptor>(name##Callbacks))
76
77#define SPECIFIC_MATCHER_OVERLOAD(name, Id)                                    \
78  static_cast<::clang::ast_matchers::name##_Type##Id>(                         \
79      ::clang::ast_matchers::name)
80
81#define MATCHER_OVERLOAD_ENTRY(name, Id)                                       \
82        internal::makeMatcherAutoMarshall(SPECIFIC_MATCHER_OVERLOAD(name, Id), \
83                                          #name)
84
85#define REGISTER_OVERLOADED_2(name)                                            \
86  do {                                                                         \
87    std::unique_ptr<MatcherDescriptor> name##Callbacks[] = {                   \
88        MATCHER_OVERLOAD_ENTRY(name, 0),                                       \
89        MATCHER_OVERLOAD_ENTRY(name, 1)};                                      \
90    REGISTER_MATCHER_OVERLOAD(name);                                           \
91  } while (false)
92
93/// Generate a registry map with all the known matchers.
94RegistryMaps::RegistryMaps() {
95  // TODO: Here is the list of the missing matchers, grouped by reason.
96  //
97  // Need Variant/Parser fixes:
98  // ofKind
99  //
100  // Polymorphic + argument overload:
101  // findAll
102  //
103  // Other:
104  // equalsNode
105
106  REGISTER_OVERLOADED_2(callee);
107  REGISTER_OVERLOADED_2(hasPrefix);
108  REGISTER_OVERLOADED_2(hasType);
109  REGISTER_OVERLOADED_2(isDerivedFrom);
110  REGISTER_OVERLOADED_2(isSameOrDerivedFrom);
111  REGISTER_OVERLOADED_2(loc);
112  REGISTER_OVERLOADED_2(pointsTo);
113  REGISTER_OVERLOADED_2(references);
114  REGISTER_OVERLOADED_2(thisPointerType);
115
116  std::unique_ptr<MatcherDescriptor> equalsCallbacks[] = {
117      MATCHER_OVERLOAD_ENTRY(equals, 0),
118      MATCHER_OVERLOAD_ENTRY(equals, 1),
119      MATCHER_OVERLOAD_ENTRY(equals, 2),
120  };
121  REGISTER_MATCHER_OVERLOAD(equals);
122
123  REGISTER_MATCHER(accessSpecDecl);
124  REGISTER_MATCHER(addrLabelExpr);
125  REGISTER_MATCHER(alignOfExpr);
126  REGISTER_MATCHER(allOf);
127  REGISTER_MATCHER(anyOf);
128  REGISTER_MATCHER(anything);
129  REGISTER_MATCHER(argumentCountIs);
130  REGISTER_MATCHER(arraySubscriptExpr);
131  REGISTER_MATCHER(arrayType);
132  REGISTER_MATCHER(asmStmt);
133  REGISTER_MATCHER(asString);
134  REGISTER_MATCHER(atomicExpr);
135  REGISTER_MATCHER(atomicType);
136  REGISTER_MATCHER(autoType);
137  REGISTER_MATCHER(autoreleasePoolStmt)
138  REGISTER_MATCHER(binaryOperator);
139  REGISTER_MATCHER(binaryConditionalOperator);
140  REGISTER_MATCHER(blockDecl);
141  REGISTER_MATCHER(blockPointerType);
142  REGISTER_MATCHER(booleanType);
143  REGISTER_MATCHER(breakStmt);
144  REGISTER_MATCHER(builtinType);
145  REGISTER_MATCHER(callExpr);
146  REGISTER_MATCHER(caseStmt);
147  REGISTER_MATCHER(castExpr);
148  REGISTER_MATCHER(characterLiteral);
149  REGISTER_MATCHER(classTemplateDecl);
150  REGISTER_MATCHER(classTemplateSpecializationDecl);
151  REGISTER_MATCHER(complexType);
152  REGISTER_MATCHER(compoundLiteralExpr);
153  REGISTER_MATCHER(compoundStmt);
154  REGISTER_MATCHER(conditionalOperator);
155  REGISTER_MATCHER(constantArrayType);
156  REGISTER_MATCHER(containsDeclaration);
157  REGISTER_MATCHER(continueStmt);
158  REGISTER_MATCHER(cStyleCastExpr);
159  REGISTER_MATCHER(cudaKernelCallExpr);
160  REGISTER_MATCHER(cxxBindTemporaryExpr);
161  REGISTER_MATCHER(cxxBoolLiteral);
162  REGISTER_MATCHER(cxxCatchStmt);
163  REGISTER_MATCHER(cxxConstCastExpr);
164  REGISTER_MATCHER(cxxConstructExpr);
165  REGISTER_MATCHER(cxxConstructorDecl);
166  REGISTER_MATCHER(cxxConversionDecl);
167  REGISTER_MATCHER(cxxCtorInitializer);
168  REGISTER_MATCHER(cxxDefaultArgExpr);
169  REGISTER_MATCHER(cxxDeleteExpr);
170  REGISTER_MATCHER(cxxDestructorDecl);
171  REGISTER_MATCHER(cxxDynamicCastExpr);
172  REGISTER_MATCHER(cxxForRangeStmt);
173  REGISTER_MATCHER(cxxFunctionalCastExpr);
174  REGISTER_MATCHER(cxxMemberCallExpr);
175  REGISTER_MATCHER(cxxMethodDecl);
176  REGISTER_MATCHER(cxxNewExpr);
177  REGISTER_MATCHER(cxxNullPtrLiteralExpr);
178  REGISTER_MATCHER(cxxOperatorCallExpr);
179  REGISTER_MATCHER(cxxRecordDecl);
180  REGISTER_MATCHER(cxxReinterpretCastExpr);
181  REGISTER_MATCHER(cxxStaticCastExpr);
182  REGISTER_MATCHER(cxxStdInitializerListExpr);
183  REGISTER_MATCHER(cxxTemporaryObjectExpr);
184  REGISTER_MATCHER(cxxThisExpr);
185  REGISTER_MATCHER(cxxThrowExpr);
186  REGISTER_MATCHER(cxxTryStmt);
187  REGISTER_MATCHER(cxxUnresolvedConstructExpr);
188  REGISTER_MATCHER(decayedType);
189  REGISTER_MATCHER(decl);
190  REGISTER_MATCHER(declaratorDecl);
191  REGISTER_MATCHER(decltypeType);
192  REGISTER_MATCHER(declCountIs);
193  REGISTER_MATCHER(declRefExpr);
194  REGISTER_MATCHER(declStmt);
195  REGISTER_MATCHER(defaultStmt);
196  REGISTER_MATCHER(dependentSizedArrayType);
197  REGISTER_MATCHER(designatedInitExpr);
198  REGISTER_MATCHER(designatorCountIs);
199  REGISTER_MATCHER(doStmt);
200  REGISTER_MATCHER(eachOf);
201  REGISTER_MATCHER(elaboratedType);
202  REGISTER_MATCHER(enumConstantDecl);
203  REGISTER_MATCHER(enumDecl);
204  REGISTER_MATCHER(enumType);
205  REGISTER_MATCHER(equalsBoundNode);
206  REGISTER_MATCHER(equalsIntegralValue);
207  REGISTER_MATCHER(explicitCastExpr);
208  REGISTER_MATCHER(expr);
209  REGISTER_MATCHER(exprWithCleanups);
210  REGISTER_MATCHER(fieldDecl);
211  REGISTER_MATCHER(floatLiteral);
212  REGISTER_MATCHER(forEach);
213  REGISTER_MATCHER(forEachArgumentWithParam);
214  REGISTER_MATCHER(forEachConstructorInitializer);
215  REGISTER_MATCHER(forEachDescendant);
216  REGISTER_MATCHER(forEachOverridden);
217  REGISTER_MATCHER(forEachSwitchCase);
218  REGISTER_MATCHER(forField);
219  REGISTER_MATCHER(forFunction);
220  REGISTER_MATCHER(forStmt);
221  REGISTER_MATCHER(friendDecl);
222  REGISTER_MATCHER(functionDecl);
223  REGISTER_MATCHER(functionProtoType);
224  REGISTER_MATCHER(functionTemplateDecl);
225  REGISTER_MATCHER(functionType);
226  REGISTER_MATCHER(gnuNullExpr);
227  REGISTER_MATCHER(gotoStmt);
228  REGISTER_MATCHER(has);
229  REGISTER_MATCHER(hasAncestor);
230  REGISTER_MATCHER(hasAnyArgument);
231  REGISTER_MATCHER(hasAnyConstructorInitializer);
232  REGISTER_MATCHER(hasAnyDeclaration);
233  REGISTER_MATCHER(hasAnyName);
234  REGISTER_MATCHER(hasAnyParameter);
235  REGISTER_MATCHER(hasAnySubstatement);
236  REGISTER_MATCHER(hasAnyTemplateArgument);
237  REGISTER_MATCHER(hasAnyUsingShadowDecl);
238  REGISTER_MATCHER(hasArgument);
239  REGISTER_MATCHER(hasArgumentOfType);
240  REGISTER_MATCHER(hasArraySize);
241  REGISTER_MATCHER(hasAttr);
242  REGISTER_MATCHER(hasAutomaticStorageDuration);
243  REGISTER_MATCHER(hasBase);
244  REGISTER_MATCHER(hasBitWidth);
245  REGISTER_MATCHER(hasBody);
246  REGISTER_MATCHER(hasCanonicalType);
247  REGISTER_MATCHER(hasCaseConstant);
248  REGISTER_MATCHER(hasCastKind);
249  REGISTER_MATCHER(hasCondition);
250  REGISTER_MATCHER(hasConditionVariableStatement);
251  REGISTER_MATCHER(hasDecayedType);
252  REGISTER_MATCHER(hasDeclaration);
253  REGISTER_MATCHER(hasDeclContext);
254  REGISTER_MATCHER(hasDeducedType);
255  REGISTER_MATCHER(hasDefaultArgument);
256  REGISTER_MATCHER(hasDefinition);
257  REGISTER_MATCHER(hasDescendant);
258  REGISTER_MATCHER(hasDestinationType);
259  REGISTER_MATCHER(hasDynamicExceptionSpec);
260  REGISTER_MATCHER(hasEitherOperand);
261  REGISTER_MATCHER(hasElementType);
262  REGISTER_MATCHER(hasElse);
263  REGISTER_MATCHER(hasExternalFormalLinkage);
264  REGISTER_MATCHER(hasFalseExpression);
265  REGISTER_MATCHER(hasGlobalStorage);
266  REGISTER_MATCHER(hasImplicitDestinationType);
267  REGISTER_MATCHER(hasInClassInitializer);
268  REGISTER_MATCHER(hasIncrement);
269  REGISTER_MATCHER(hasIndex);
270  REGISTER_MATCHER(hasInitializer);
271  REGISTER_MATCHER(hasKeywordSelector);
272  REGISTER_MATCHER(hasLHS);
273  REGISTER_MATCHER(hasLocalQualifiers);
274  REGISTER_MATCHER(hasLocalStorage);
275  REGISTER_MATCHER(hasLoopInit);
276  REGISTER_MATCHER(hasLoopVariable);
277  REGISTER_MATCHER(hasMethod);
278  REGISTER_MATCHER(hasName);
279  REGISTER_MATCHER(hasNullSelector);
280  REGISTER_MATCHER(hasObjectExpression);
281  REGISTER_MATCHER(hasOperatorName);
282  REGISTER_MATCHER(hasOverloadedOperatorName);
283  REGISTER_MATCHER(hasParameter);
284  REGISTER_MATCHER(hasParent);
285  REGISTER_MATCHER(hasQualifier);
286  REGISTER_MATCHER(hasRangeInit);
287  REGISTER_MATCHER(hasReceiver);
288  REGISTER_MATCHER(hasReceiverType);
289  REGISTER_MATCHER(hasReplacementType);
290  REGISTER_MATCHER(hasReturnValue);
291  REGISTER_MATCHER(hasRHS);
292  REGISTER_MATCHER(hasSelector);
293  REGISTER_MATCHER(hasAnySelector);
294  REGISTER_MATCHER(hasSingleDecl);
295  REGISTER_MATCHER(hasSize);
296  REGISTER_MATCHER(hasSizeExpr);
297  REGISTER_MATCHER(hasSourceExpression);
298  REGISTER_MATCHER(hasStaticStorageDuration);
299  REGISTER_MATCHER(hasSyntacticForm);
300  REGISTER_MATCHER(hasTargetDecl);
301  REGISTER_MATCHER(hasTemplateArgument);
302  REGISTER_MATCHER(hasThen);
303  REGISTER_MATCHER(hasThreadStorageDuration);
304  REGISTER_MATCHER(hasTrailingReturn);
305  REGISTER_MATCHER(hasTrueExpression);
306  REGISTER_MATCHER(hasTypeLoc);
307  REGISTER_MATCHER(hasUnaryOperand);
308  REGISTER_MATCHER(hasUnarySelector);
309  REGISTER_MATCHER(hasUnderlyingDecl);
310  REGISTER_MATCHER(hasUnqualifiedDesugaredType);
311  REGISTER_MATCHER(hasValueType);
312  REGISTER_MATCHER(ifStmt);
313  REGISTER_MATCHER(ignoringImplicit);
314  REGISTER_MATCHER(ignoringImpCasts);
315  REGISTER_MATCHER(ignoringParenCasts);
316  REGISTER_MATCHER(ignoringParenImpCasts);
317  REGISTER_MATCHER(ignoringParens);
318  REGISTER_MATCHER(implicitCastExpr);
319  REGISTER_MATCHER(implicitValueInitExpr);
320  REGISTER_MATCHER(incompleteArrayType);
321  REGISTER_MATCHER(initListExpr);
322  REGISTER_MATCHER(injectedClassNameType);
323  REGISTER_MATCHER(innerType);
324  REGISTER_MATCHER(integerLiteral);
325  REGISTER_MATCHER(isAnonymous);
326  REGISTER_MATCHER(isAnyCharacter);
327  REGISTER_MATCHER(isAnyPointer);
328  REGISTER_MATCHER(isArray);
329  REGISTER_MATCHER(isArrow);
330  REGISTER_MATCHER(isAssignmentOperator);
331  REGISTER_MATCHER(isBaseInitializer);
332  REGISTER_MATCHER(isBitField);
333  REGISTER_MATCHER(isCatchAll);
334  REGISTER_MATCHER(isClass);
335  REGISTER_MATCHER(isConst);
336  REGISTER_MATCHER(isConstexpr);
337  REGISTER_MATCHER(isConstQualified);
338  REGISTER_MATCHER(isCopyAssignmentOperator);
339  REGISTER_MATCHER(isCopyConstructor);
340  REGISTER_MATCHER(isDefaultConstructor);
341  REGISTER_MATCHER(isDefaulted);
342  REGISTER_MATCHER(isDefinition);
343  REGISTER_MATCHER(isDeleted);
344  REGISTER_MATCHER(isExceptionVariable);
345  REGISTER_MATCHER(isExplicit);
346  REGISTER_MATCHER(isExplicitTemplateSpecialization);
347  REGISTER_MATCHER(isExpr);
348  REGISTER_MATCHER(isExternC);
349  REGISTER_MATCHER(isFinal);
350  REGISTER_MATCHER(isInline);
351  REGISTER_MATCHER(isImplicit);
352  REGISTER_MATCHER(isExpansionInFileMatching);
353  REGISTER_MATCHER(isExpansionInMainFile);
354  REGISTER_MATCHER(isInstanceMessage);
355  REGISTER_MATCHER(isInstantiated);
356  REGISTER_MATCHER(isExpansionInSystemHeader);
357  REGISTER_MATCHER(isInteger);
358  REGISTER_MATCHER(isIntegral);
359  REGISTER_MATCHER(isInTemplateInstantiation);
360  REGISTER_MATCHER(isLambda);
361  REGISTER_MATCHER(isListInitialization);
362  REGISTER_MATCHER(isMain);
363  REGISTER_MATCHER(isMemberInitializer);
364  REGISTER_MATCHER(isMoveAssignmentOperator);
365  REGISTER_MATCHER(isMoveConstructor);
366  REGISTER_MATCHER(isNoReturn);
367  REGISTER_MATCHER(isNoThrow);
368  REGISTER_MATCHER(isOverride);
369  REGISTER_MATCHER(isPrivate);
370  REGISTER_MATCHER(isProtected);
371  REGISTER_MATCHER(isPublic);
372  REGISTER_MATCHER(isPure);
373  REGISTER_MATCHER(isScoped);
374  REGISTER_MATCHER(isSignedInteger);
375  REGISTER_MATCHER(isStaticStorageClass);
376  REGISTER_MATCHER(isStruct);
377  REGISTER_MATCHER(isTemplateInstantiation);
378  REGISTER_MATCHER(isUnion);
379  REGISTER_MATCHER(isUnsignedInteger);
380  REGISTER_MATCHER(isVariadic);
381  REGISTER_MATCHER(isVirtual);
382  REGISTER_MATCHER(isVirtualAsWritten);
383  REGISTER_MATCHER(isVolatileQualified);
384  REGISTER_MATCHER(isWritten);
385  REGISTER_MATCHER(labelDecl);
386  REGISTER_MATCHER(labelStmt);
387  REGISTER_MATCHER(lambdaExpr);
388  REGISTER_MATCHER(linkageSpecDecl);
389  REGISTER_MATCHER(lValueReferenceType);
390  REGISTER_MATCHER(matchesName);
391  REGISTER_MATCHER(matchesSelector);
392  REGISTER_MATCHER(materializeTemporaryExpr);
393  REGISTER_MATCHER(member);
394  REGISTER_MATCHER(memberExpr);
395  REGISTER_MATCHER(memberPointerType);
396  REGISTER_MATCHER(namedDecl);
397  REGISTER_MATCHER(namespaceAliasDecl);
398  REGISTER_MATCHER(namespaceDecl);
399  REGISTER_MATCHER(namesType);
400  REGISTER_MATCHER(nestedNameSpecifier);
401  REGISTER_MATCHER(nestedNameSpecifierLoc);
402  REGISTER_MATCHER(nullPointerConstant);
403  REGISTER_MATCHER(nullStmt);
404  REGISTER_MATCHER(numSelectorArgs);
405  REGISTER_MATCHER(ofClass);
406  REGISTER_MATCHER(objcCatchStmt);
407  REGISTER_MATCHER(objcCategoryDecl);
408  REGISTER_MATCHER(objcCategoryImplDecl);
409  REGISTER_MATCHER(objcFinallyStmt);
410  REGISTER_MATCHER(objcImplementationDecl);
411  REGISTER_MATCHER(objcInterfaceDecl);
412  REGISTER_MATCHER(objcIvarDecl);
413  REGISTER_MATCHER(objcIvarRefExpr);
414  REGISTER_MATCHER(objcMessageExpr);
415  REGISTER_MATCHER(objcMethodDecl);
416  REGISTER_MATCHER(objcObjectPointerType);
417  REGISTER_MATCHER(objcPropertyDecl);
418  REGISTER_MATCHER(objcProtocolDecl);
419  REGISTER_MATCHER(objcThrowStmt);
420  REGISTER_MATCHER(objcTryStmt);
421  REGISTER_MATCHER(on);
422  REGISTER_MATCHER(onImplicitObjectArgument);
423  REGISTER_MATCHER(opaqueValueExpr);
424  REGISTER_MATCHER(parameterCountIs);
425  REGISTER_MATCHER(parenExpr);
426  REGISTER_MATCHER(parenListExpr);
427  REGISTER_MATCHER(parenType);
428  REGISTER_MATCHER(parmVarDecl);
429  REGISTER_MATCHER(pointee);
430  REGISTER_MATCHER(pointerType);
431  REGISTER_MATCHER(predefinedExpr);
432  REGISTER_MATCHER(qualType);
433  REGISTER_MATCHER(realFloatingPointType);
434  REGISTER_MATCHER(recordDecl);
435  REGISTER_MATCHER(recordType);
436  REGISTER_MATCHER(referenceType);
437  REGISTER_MATCHER(refersToDeclaration);
438  REGISTER_MATCHER(refersToIntegralType);
439  REGISTER_MATCHER(refersToType);
440  REGISTER_MATCHER(requiresZeroInitialization);
441  REGISTER_MATCHER(returns);
442  REGISTER_MATCHER(returnStmt);
443  REGISTER_MATCHER(rValueReferenceType);
444  REGISTER_MATCHER(sizeOfExpr);
445  REGISTER_MATCHER(specifiesNamespace);
446  REGISTER_MATCHER(specifiesType);
447  REGISTER_MATCHER(specifiesTypeLoc);
448  REGISTER_MATCHER(statementCountIs);
449  REGISTER_MATCHER(staticAssertDecl);
450  REGISTER_MATCHER(stmt);
451  REGISTER_MATCHER(stmtExpr);
452  REGISTER_MATCHER(stringLiteral);
453  REGISTER_MATCHER(substNonTypeTemplateParmExpr);
454  REGISTER_MATCHER(substTemplateTypeParmType);
455  REGISTER_MATCHER(switchCase);
456  REGISTER_MATCHER(switchStmt);
457  REGISTER_MATCHER(templateArgument);
458  REGISTER_MATCHER(templateName);
459  REGISTER_MATCHER(templateArgumentCountIs);
460  REGISTER_MATCHER(templateSpecializationType);
461  REGISTER_MATCHER(templateTypeParmDecl);
462  REGISTER_MATCHER(templateTypeParmType);
463  REGISTER_MATCHER(throughUsingDecl);
464  REGISTER_MATCHER(to);
465  REGISTER_MATCHER(translationUnitDecl);
466  REGISTER_MATCHER(type);
467  REGISTER_MATCHER(typedefDecl);
468  REGISTER_MATCHER(typedefNameDecl);
469  REGISTER_MATCHER(typedefType);
470  REGISTER_MATCHER(typeAliasDecl);
471  REGISTER_MATCHER(typeAliasTemplateDecl);
472  REGISTER_MATCHER(typeLoc);
473  REGISTER_MATCHER(unaryExprOrTypeTraitExpr);
474  REGISTER_MATCHER(unaryOperator);
475  REGISTER_MATCHER(unaryTransformType);
476  REGISTER_MATCHER(unless);
477  REGISTER_MATCHER(unresolvedLookupExpr);
478  REGISTER_MATCHER(unresolvedUsingTypenameDecl);
479  REGISTER_MATCHER(unresolvedUsingValueDecl);
480  REGISTER_MATCHER(userDefinedLiteral);
481  REGISTER_MATCHER(usingDecl);
482  REGISTER_MATCHER(usingDirectiveDecl);
483  REGISTER_MATCHER(valueDecl);
484  REGISTER_MATCHER(varDecl);
485  REGISTER_MATCHER(variableArrayType);
486  REGISTER_MATCHER(voidType);
487  REGISTER_MATCHER(whileStmt);
488  REGISTER_MATCHER(withInitializer);
489}
490
491RegistryMaps::~RegistryMaps() = default;
492
493static llvm::ManagedStatic<RegistryMaps> RegistryData;
494
495// static
496llvm::Optional<MatcherCtor> Registry::lookupMatcherCtor(StringRef MatcherName) {
497  auto it = RegistryData->constructors().find(MatcherName);
498  return it == RegistryData->constructors().end()
499             ? llvm::Optional<MatcherCtor>()
500             : it->second.get();
501}
502
503static llvm::raw_ostream &operator<<(llvm::raw_ostream &OS,
504                                     const std::set<ASTNodeKind> &KS) {
505  unsigned Count = 0;
506  for (std::set<ASTNodeKind>::const_iterator I = KS.begin(), E = KS.end();
507       I != E; ++I) {
508    if (I != KS.begin())
509      OS << "|";
510    if (Count++ == 3) {
511      OS << "...";
512      break;
513    }
514    OS << *I;
515  }
516  return OS;
517}
518
519std::vector<ArgKind> Registry::getAcceptedCompletionTypes(
520    ArrayRef<std::pair<MatcherCtor, unsigned>> Context) {
521  ASTNodeKind InitialTypes[] = {
522      ASTNodeKind::getFromNodeKind<Decl>(),
523      ASTNodeKind::getFromNodeKind<QualType>(),
524      ASTNodeKind::getFromNodeKind<Type>(),
525      ASTNodeKind::getFromNodeKind<Stmt>(),
526      ASTNodeKind::getFromNodeKind<NestedNameSpecifier>(),
527      ASTNodeKind::getFromNodeKind<NestedNameSpecifierLoc>(),
528      ASTNodeKind::getFromNodeKind<TypeLoc>()};
529
530  // Starting with the above seed of acceptable top-level matcher types, compute
531  // the acceptable type set for the argument indicated by each context element.
532  std::set<ArgKind> TypeSet(std::begin(InitialTypes), std::end(InitialTypes));
533  for (const auto &CtxEntry : Context) {
534    MatcherCtor Ctor = CtxEntry.first;
535    unsigned ArgNumber = CtxEntry.second;
536    std::vector<ArgKind> NextTypeSet;
537    for (const ArgKind &Kind : TypeSet) {
538      if (Kind.getArgKind() == Kind.AK_Matcher &&
539          Ctor->isConvertibleTo(Kind.getMatcherKind()) &&
540          (Ctor->isVariadic() || ArgNumber < Ctor->getNumArgs()))
541        Ctor->getArgKinds(Kind.getMatcherKind(), ArgNumber, NextTypeSet);
542    }
543    TypeSet.clear();
544    TypeSet.insert(NextTypeSet.begin(), NextTypeSet.end());
545  }
546  return std::vector<ArgKind>(TypeSet.begin(), TypeSet.end());
547}
548
549std::vector<MatcherCompletion>
550Registry::getMatcherCompletions(ArrayRef<ArgKind> AcceptedTypes) {
551  std::vector<MatcherCompletion> Completions;
552
553  // Search the registry for acceptable matchers.
554  for (const auto &M : RegistryData->constructors()) {
555    const MatcherDescriptor& Matcher = *M.getValue();
556    StringRef Name = M.getKey();
557
558    std::set<ASTNodeKind> RetKinds;
559    unsigned NumArgs = Matcher.isVariadic() ? 1 : Matcher.getNumArgs();
560    bool IsPolymorphic = Matcher.isPolymorphic();
561    std::vector<std::vector<ArgKind>> ArgsKinds(NumArgs);
562    unsigned MaxSpecificity = 0;
563    for (const ArgKind& Kind : AcceptedTypes) {
564      if (Kind.getArgKind() != Kind.AK_Matcher)
565        continue;
566      unsigned Specificity;
567      ASTNodeKind LeastDerivedKind;
568      if (Matcher.isConvertibleTo(Kind.getMatcherKind(), &Specificity,
569                                  &LeastDerivedKind)) {
570        if (MaxSpecificity < Specificity)
571          MaxSpecificity = Specificity;
572        RetKinds.insert(LeastDerivedKind);
573        for (unsigned Arg = 0; Arg != NumArgs; ++Arg)
574          Matcher.getArgKinds(Kind.getMatcherKind(), Arg, ArgsKinds[Arg]);
575        if (IsPolymorphic)
576          break;
577      }
578    }
579
580    if (!RetKinds.empty() && MaxSpecificity > 0) {
581      std::string Decl;
582      llvm::raw_string_ostream OS(Decl);
583
584      if (IsPolymorphic) {
585        OS << "Matcher<T> " << Name << "(Matcher<T>";
586      } else {
587        OS << "Matcher<" << RetKinds << "> " << Name << "(";
588        for (const std::vector<ArgKind> &Arg : ArgsKinds) {
589          if (&Arg != &ArgsKinds[0])
590            OS << ", ";
591
592          bool FirstArgKind = true;
593          std::set<ASTNodeKind> MatcherKinds;
594          // Two steps. First all non-matchers, then matchers only.
595          for (const ArgKind &AK : Arg) {
596            if (AK.getArgKind() == ArgKind::AK_Matcher) {
597              MatcherKinds.insert(AK.getMatcherKind());
598            } else {
599              if (!FirstArgKind) OS << "|";
600              FirstArgKind = false;
601              OS << AK.asString();
602            }
603          }
604          if (!MatcherKinds.empty()) {
605            if (!FirstArgKind) OS << "|";
606            OS << "Matcher<" << MatcherKinds << ">";
607          }
608        }
609      }
610      if (Matcher.isVariadic())
611        OS << "...";
612      OS << ")";
613
614      std::string TypedText = Name;
615      TypedText += "(";
616      if (ArgsKinds.empty())
617        TypedText += ")";
618      else if (ArgsKinds[0][0].getArgKind() == ArgKind::AK_String)
619        TypedText += "\"";
620
621      Completions.emplace_back(TypedText, OS.str(), MaxSpecificity);
622    }
623  }
624
625  return Completions;
626}
627
628VariantMatcher Registry::constructMatcher(MatcherCtor Ctor,
629                                          SourceRange NameRange,
630                                          ArrayRef<ParserValue> Args,
631                                          Diagnostics *Error) {
632  return Ctor->create(NameRange, Args, Error);
633}
634
635VariantMatcher Registry::constructBoundMatcher(MatcherCtor Ctor,
636                                               SourceRange NameRange,
637                                               StringRef BindID,
638                                               ArrayRef<ParserValue> Args,
639                                               Diagnostics *Error) {
640  VariantMatcher Out = constructMatcher(Ctor, NameRange, Args, Error);
641  if (Out.isNull()) return Out;
642
643  llvm::Optional<DynTypedMatcher> Result = Out.getSingleMatcher();
644  if (Result.hasValue()) {
645    llvm::Optional<DynTypedMatcher> Bound = Result->tryBind(BindID);
646    if (Bound.hasValue()) {
647      return VariantMatcher::SingleMatcher(*Bound);
648    }
649  }
650  Error->addError(NameRange, Error->ET_RegistryNotBindable);
651  return VariantMatcher();
652}
653
654} // namespace dynamic
655} // namespace ast_matchers
656} // namespace clang
657