44#include "llvm/ADT/APInt.h"
45#include "llvm/ADT/APSInt.h"
46#include "llvm/ADT/ArrayRef.h"
47#include "llvm/ADT/DenseMap.h"
48#include "llvm/ADT/FoldingSet.h"
49#include "llvm/ADT/SmallBitVector.h"
50#include "llvm/ADT/SmallPtrSet.h"
51#include "llvm/ADT/SmallVector.h"
52#include "llvm/Support/Casting.h"
53#include "llvm/Support/Compiler.h"
54#include "llvm/Support/ErrorHandling.h"
112using namespace clang;
118 if (Y.getBitWidth() >
X.getBitWidth())
119 X =
X.extend(Y.getBitWidth());
120 else if (Y.getBitWidth() <
X.getBitWidth())
121 Y = Y.extend(
X.getBitWidth());
124 if (
X.isSigned() != Y.isSigned()) {
126 if ((Y.isSigned() && Y.isNegative()) || (
X.isSigned() &&
X.isNegative()))
149 bool NumberOfArgumentsMustMatch,
154 bool OnlyDeduced,
unsigned Depth,
155 llvm::SmallBitVector &
Used);
158 bool OnlyDeduced,
unsigned Level,
159 llvm::SmallBitVector &Deduced);
169 if (
const auto *IC = dyn_cast<ImplicitCastExpr>(E))
170 E = IC->getSubExpr();
171 else if (
const auto *CE = dyn_cast<ConstantExpr>(E))
172 E = CE->getSubExpr();
173 else if (
const auto *Subst = dyn_cast<SubstNonTypeTemplateParmExpr>(E))
174 E = Subst->getReplacement();
175 else if (
const auto *CCE = dyn_cast<CXXConstructExpr>(E)) {
177 if (CCE->getParenOrBraceRange().isValid())
180 assert(CCE->getNumArgs() >= 1 &&
"implicit construct expr should have 1 arg");
186 if (
const auto *DRE = dyn_cast<DeclRefExpr>(E))
187 if (
const auto *NTTP = dyn_cast<NonTypeTemplateParmDecl>(DRE->getDecl()))
188 if (NTTP->getDepth() == Depth)
203 X = NX->getUnderlyingDecl();
204 if (
NamedDecl *NY = dyn_cast<NamedDecl>(Y))
205 Y = NY->getUnderlyingDecl();
218 bool AggregateCandidateDeduction =
false) {
231 QualType XType =
X.getNonTypeTemplateArgumentType();
239 switch (
X.getKind()) {
241 llvm_unreachable(
"Non-deduced template arguments handled above");
248 X.wasDeducedFromArrayBound() ||
254 return X.wasDeducedFromArrayBound() ? Y :
X;
268 return X.wasDeducedFromArrayBound() ? Y :
X;
277 X.structurallyEquals(Y)))
305 llvm::FoldingSetNodeID ID1, ID2;
306 X.getAsExpr()->Profile(ID1, Context,
true);
309 return X.wasDeducedFromArrayBound() ? Y :
X;
316 assert(!
X.wasDeducedFromArrayBound());
329 X.getParamTypeForDecl());
366 (!AggregateCandidateDeduction &&
X.pack_size() != Y.
pack_size()))
373 XA != XAEnd; ++XA, ++YA) {
378 if (Merged.isNull() && !(XA->isNull() && YA->isNull()))
380 NewPack.push_back(Merged);
382 NewPack.push_back(*XA);
392 llvm_unreachable(
"Invalid TemplateArgument Kind!");
405 "deducing non-type template argument with wrong depth");
409 if (Result.isNull()) {
413 return TemplateDeductionResult::Inconsistent;
418 return TemplateDeductionResult::Success;
425 return TemplateDeductionResult::Success;
430 if (
auto *Expansion = dyn_cast<PackExpansionType>(ParamType))
431 ParamType = Expansion->getPattern();
445 S, TemplateParams, ParamType, ValueType, Info, Deduced,
458 S, TemplateParams, NTTP,
460 DeducedFromArrayBound),
461 ValueType, Info, Deduced);
520 case Decl::TemplateTypeParm: {
521 auto *
T = cast<TemplateTypeParmDecl>(A);
525 if (
T->isParameterPack())
529 T->getDepth(),
T->getIndex(),
T->getIdentifier(),
530 T->wasDeclaredWithTypename(),
false,
531 T->hasTypeConstraint());
532 R->setDefaultArgument(
534 if (R->hasTypeConstraint()) {
535 auto *
C = R->getTypeConstraint();
536 R->setTypeConstraint(
C->getConceptReference(),
537 C->getImmediatelyDeclaredConstraint());
541 case Decl::NonTypeTemplateParm: {
542 auto *
T = cast<NonTypeTemplateParmDecl>(A);
544 if (
T->isParameterPack())
548 T->getDepth(),
T->getIndex(),
T->getIdentifier(),
T->getType(),
549 false,
T->getTypeSourceInfo());
550 R->setDefaultArgument(
Default.getAsExpr());
551 if (
auto *PTC =
T->getPlaceholderTypeConstraint())
552 R->setPlaceholderTypeConstraint(PTC);
555 case Decl::TemplateTemplateParm: {
556 auto *
T = cast<TemplateTemplateParmDecl>(A);
559 T->getIndex(),
T->isParameterPack(),
T->getIdentifier(),
560 T->wasDeclaredWithTypename(),
T->getTemplateParameters());
561 R->setDefaultArgument(
567 llvm_unreachable(
"Unexpected Decl Kind");
581 return TemplateDeductionResult::Success;
584 if (
auto *TempParam = dyn_cast<TemplateTemplateParmDecl>(ParamDecl)) {
587 return TemplateDeductionResult::Success;
594 if (
auto *TempArg = dyn_cast_or_null<TemplateTemplateParmDecl>(
597 assert(!TempArg->isExpandedParameterPack());
600 if (DefaultArguments.size() != 0) {
601 assert(DefaultArguments.size() <= As->
size());
603 for (
unsigned I = 0; I < DefaultArguments.size(); ++I)
605 DefaultArguments[I]);
606 for (
unsigned I = DefaultArguments.size(); I < As->size(); ++I)
611 auto *TPL = TemplateParameterList::Create(
617 TempArg->getDepth(), TempArg->getPosition(),
618 TempArg->isParameterPack(), TempArg->getIdentifier(),
619 TempArg->wasDeclaredWithTypename(), TPL)));
624 Deduced[TempParam->getIndex()],
626 if (Result.isNull()) {
627 Info.
Param = TempParam;
628 Info.
FirstArg = Deduced[TempParam->getIndex()];
630 return TemplateDeductionResult::Inconsistent;
633 Deduced[TempParam->getIndex()] = Result;
634 return TemplateDeductionResult::Success;
639 return TemplateDeductionResult::Success;
644 return TemplateDeductionResult::NonDeducedMismatch;
672 UP = IP->getInjectedSpecializationType();
679 if (
const auto *TD = TNP.getAsTemplateDecl(); TD && TD->isTypeAlias())
680 return TemplateDeductionResult::Success;
687 UA = Injected->getInjectedSpecializationType();
697 return TemplateDeductionResult::Success;
702 SA->template_arguments(), Deduced);
703 Result != TemplateDeductionResult::Success)
709 SA->template_arguments(), Info, Deduced,
718 RA ? dyn_cast<ClassTemplateSpecializationDecl>(RA->getDecl()) :
nullptr;
722 return TemplateDeductionResult::NonDeducedMismatch;
727 S, TemplateParams, TP->getTemplateName(),
729 SA->getTemplateArgs().asArray(), Deduced);
730 Result != TemplateDeductionResult::Success)
735 SA->getTemplateArgs().asArray(), Info, Deduced,
743 case Type::TypeOfExpr:
745 case Type::DependentName:
747 case Type::PackIndexing:
748 case Type::UnresolvedUsing:
749 case Type::TemplateTypeParm:
753 case Type::ConstantArray:
754 case Type::IncompleteArray:
755 case Type::VariableArray:
756 case Type::DependentSizedArray:
758 cast<ArrayType>(
T)->getElementType().getTypePtr());
807class PackDeductionScope {
813 bool DeducePackIfNotAlreadyDeduced =
false)
814 : S(S), TemplateParams(TemplateParams), Deduced(Deduced), Info(Info),
815 DeducePackIfNotAlreadyDeduced(DeducePackIfNotAlreadyDeduced){
816 unsigned NumNamedPacks = addPacks(Pattern);
817 finishConstruction(NumNamedPacks);
824 : S(S), TemplateParams(TemplateParams), Deduced(Deduced), Info(Info) {
826 finishConstruction(1);
830 void addPack(
unsigned Index) {
833 DeducedFromEarlierParameter = !Deduced[Index].isNull();
835 Pack.Saved = Deduced[Index];
841 if (std::optional<unsigned> ExpandedPackExpansions =
843 FixedNumExpansions = ExpandedPackExpansions;
845 Packs.push_back(Pack);
851 llvm::SmallBitVector SawIndices(TemplateParams->size());
854 auto AddPack = [&](
unsigned Index) {
855 if (SawIndices[Index])
857 SawIndices[Index] =
true;
864 if (
auto *NTTP = dyn_cast<NonTypeTemplateParmDecl>(
865 TemplateParams->getParam(Index))) {
866 if (!NTTP->isExpandedParameterPack())
867 if (
auto *Expansion = dyn_cast<PackExpansionType>(NTTP->getType()))
868 ExtraDeductions.push_back(Expansion->getPattern());
877 for (
unsigned I = 0, N = Unexpanded.size(); I != N; ++I) {
878 unsigned Depth, Index;
880 if (Depth == Info.getDeducedDepth())
887 assert(!Packs.empty() &&
"Pack expansion without unexpanded packs?");
889 unsigned NumNamedPacks = Packs.size();
893 while (!ExtraDeductions.empty())
894 Collect(ExtraDeductions.pop_back_val());
896 return NumNamedPacks;
899 void finishConstruction(
unsigned NumNamedPacks) {
902 unsigned NumPartialPackArgs = 0;
903 std::pair<unsigned, unsigned> PartialPackDepthIndex(-1u, -1u);
905 if (
auto *Partial =
Scope->getPartiallySubstitutedPack(
906 &PartialPackArgs, &NumPartialPackArgs))
912 bool IsExpanded =
true;
913 for (
unsigned I = 0; I != NumNamedPacks; ++I) {
914 if (Packs[I].Index >= Info.getNumExplicitArgs()) {
916 IsPartiallyExpanded =
false;
919 if (PartialPackDepthIndex ==
920 std::make_pair(Info.getDeducedDepth(), Packs[I].Index)) {
921 IsPartiallyExpanded =
true;
927 if (IsPartiallyExpanded)
928 PackElements += NumPartialPackArgs;
930 PackElements += *FixedNumExpansions;
932 for (
auto &Pack : Packs) {
933 if (Info.PendingDeducedPacks.size() > Pack.Index)
934 Pack.Outer = Info.PendingDeducedPacks[Pack.Index];
936 Info.PendingDeducedPacks.resize(Pack.Index + 1);
937 Info.PendingDeducedPacks[Pack.Index] = &Pack;
939 if (PartialPackDepthIndex ==
940 std::make_pair(Info.getDeducedDepth(), Pack.Index)) {
941 Pack.New.append(PartialPackArgs, PartialPackArgs + NumPartialPackArgs);
950 if (!IsPartiallyExpanded)
951 Deduced[Pack.Index] = Pack.New[PackElements];
957 ~PackDeductionScope() {
958 for (
auto &Pack : Packs)
959 Info.PendingDeducedPacks[Pack.Index] = Pack.Outer;
963 std::optional<unsigned> getSavedPackSizeIfAllEqual()
const {
964 unsigned PackSize = Packs[0].Saved.pack_size();
966 if (std::all_of(Packs.begin() + 1, Packs.end(), [&PackSize](
const auto &
P) {
967 return P.Saved.pack_size() == PackSize;
975 bool isDeducedFromEarlierParameter()
const {
976 return DeducedFromEarlierParameter;
981 bool isPartiallyExpanded() {
return IsPartiallyExpanded; }
986 bool hasFixedArity() {
return FixedNumExpansions.has_value(); }
991 bool hasNextElement() {
992 return !FixedNumExpansions || *FixedNumExpansions > PackElements;
996 void nextPackElement() {
1000 for (
auto &Pack : Packs) {
1002 if (!Pack.New.empty() || !DeducedArg.
isNull()) {
1003 while (Pack.New.size() < PackElements)
1005 if (Pack.New.size() == PackElements)
1006 Pack.New.push_back(DeducedArg);
1008 Pack.New[PackElements] = DeducedArg;
1009 DeducedArg = Pack.New.size() > PackElements + 1
1010 ? Pack.New[PackElements + 1]
1023 for (
auto &Pack : Packs) {
1025 Deduced[Pack.Index] = Pack.Saved;
1040 Pack.New.resize(PackElements);
1044 if (Pack.New.empty()) {
1050 std::copy(Pack.New.begin(), Pack.New.end(), ArgumentPack);
1058 Pack.New[0].wasDeducedFromArrayBound());
1064 if (Pack.Outer->DeferredDeduction.isNull()) {
1067 Pack.Outer->DeferredDeduction = NewPack;
1070 Loc = &Pack.Outer->DeferredDeduction;
1072 Loc = &Deduced[Pack.Index];
1078 S.
Context, OldPack, NewPack, DeducePackIfNotAlreadyDeduced);
1080 Info.AggregateDeductionCandidateHasMismatchedArity =
1086 if (!Result.isNull() && !Pack.DeferredDeduction.isNull()) {
1088 NewPack = Pack.DeferredDeduction;
1092 NamedDecl *Param = TemplateParams->getParam(Pack.Index);
1093 if (Result.isNull()) {
1095 Info.FirstArg = OldPack;
1096 Info.SecondArg = NewPack;
1097 return TemplateDeductionResult::Inconsistent;
1103 if (*Expansions != PackElements) {
1105 Info.FirstArg = Result;
1106 return TemplateDeductionResult::IncompletePack;
1113 return TemplateDeductionResult::Success;
1121 unsigned PackElements = 0;
1122 bool IsPartiallyExpanded =
false;
1123 bool DeducePackIfNotAlreadyDeduced =
false;
1124 bool DeducedFromEarlierParameter =
false;
1126 std::optional<unsigned> FixedNumExpansions;
1165 const QualType *Params,
unsigned NumParams,
1166 const QualType *Args,
unsigned NumArgs,
1179 = dyn_cast<PackExpansionType>(Params[
ParamIdx]);
1184 if (ArgIdx >= NumArgs)
1185 return TemplateDeductionResult::MiscellaneousDeductionFailure;
1187 if (isa<PackExpansionType>(Args[ArgIdx])) {
1192 return TemplateDeductionResult::MiscellaneousDeductionFailure;
1196 S, TemplateParams, Params[
ParamIdx].getUnqualifiedType(),
1197 Args[ArgIdx].getUnqualifiedType(), Info, Deduced, TDF,
1200 Result != TemplateDeductionResult::Success)
1215 PackDeductionScope PackScope(S, TemplateParams, Deduced, Info, Pattern);
1219 if (
ParamIdx + 1 == NumParams || PackScope.hasFixedArity()) {
1220 for (; ArgIdx < NumArgs && PackScope.hasNextElement(); ++ArgIdx) {
1226 Result != TemplateDeductionResult::Success)
1229 PackScope.nextPackElement();
1250 if (NumExpansions && !PackScope.isPartiallyExpanded()) {
1251 for (
unsigned I = 0; I != *NumExpansions && ArgIdx < NumArgs;
1253 PackScope.nextPackElement();
1259 if (
auto Result = PackScope.finish();
1260 Result != TemplateDeductionResult::Success)
1271 isa<PackExpansionType>(Args[ArgIdx]))
1272 return TemplateDeductionResult::Success;
1275 if (ArgIdx < NumArgs)
1276 return TemplateDeductionResult::MiscellaneousDeductionFailure;
1278 return TemplateDeductionResult::Success;
1290 if (ParamQs == ArgQs)
1341 if (!Guide || !Guide->isImplicit())
1343 return Guide->getDeducedTemplate()->getTemplateParameters()->size();
1353 if (ParamRef->getPointeeType().getQualifiers())
1356 return TypeParm && TypeParm->
getIndex() >= FirstInnerIndex;
1362 return cast<CXXRecordDecl>(
1419 assert(
T->
isRecordType() &&
"Base class that isn't a record?");
1421 ToVisit.push_back(
T);
1430 while (!ToVisit.empty()) {
1431 QualType NextT = ToVisit.pop_back_val();
1437 S, TemplateParams,
P, NextT, BaseInfo, DeducedCopy);
1443 Matches.insert({RD, DeducedCopy});
1454 if (Matches.size() > 1) {
1456 for (
const auto &Match : Matches)
1457 AddBases(Match.first);
1461 while (Matches.size() > 1 && !ToVisit.empty()) {
1471 if (Matches.empty())
1473 if (Matches.size() > 1)
1476 std::swap(Matches.front().second, Deduced);
1512 if (
const auto *AExp = dyn_cast<PackExpansionType>(A))
1513 A = AExp->getPattern();
1594 TDF &= ~TDF_TopLevelParameterTypeList;
1597 P =
P->getPointeeType();
1614 unsigned Index = TTP->getIndex();
1629 Info.
Param = cast<TemplateTypeParmDecl>(TemplateParams->
getParam(Index));
1641 "saw template type parameter with wrong depth");
1643 "Unresolved overloaded function");
1663 Info.
Param = cast<TemplateTypeParmDecl>(TemplateParams->
getParam(Index));
1683 Info.
Param = cast<TemplateTypeParmDecl>(TemplateParams->
getParam(Index));
1728 if (!
P->isDependentType()) {
1744 switch (
P.getCanonicalType()->getTypeClass()) {
1746#define NON_CANONICAL_TYPE(Class, Base) \
1747 case Type::Class: llvm_unreachable("deducing non-canonical type: " #Class);
1748#define TYPE(Class, Base)
1749#include "clang/AST/TypeNodes.inc"
1751 case Type::TemplateTypeParm:
1752 case Type::SubstTemplateTypeParmPack:
1753 llvm_unreachable(
"Type nodes handled above");
1761 if (
P->isDependentType())
1765 case Type::VariableArray:
1767 case Type::FunctionNoProto:
1770 case Type::ObjCObject:
1771 case Type::ObjCInterface:
1772 case Type::ObjCObjectPointer:
1782 case Type::Complex: {
1787 S, TemplateParams, CP->getElementType(), CA->getElementType(), Info,
1792 case Type::Atomic: {
1797 S, TemplateParams, PA->getValueType(), AA->getValueType(), Info,
1802 case Type::Pointer: {
1813 PointeeType, Info, Deduced,
1818 case Type::LValueReference: {
1825 S, TemplateParams, RP->getPointeeType(), RA->getPointeeType(), Info,
1830 case Type::RValueReference: {
1837 S, TemplateParams, RP->getPointeeType(), RA->getPointeeType(), Info,
1842 case Type::IncompleteArray: {
1848 assert(IAP &&
"Template parameter not of incomplete array type");
1851 S, TemplateParams, IAP->getElementType(), IAA->getElementType(), Info,
1856 case Type::ConstantArray: {
1860 if (!CAA || CAA->getSize() != CAP->getSize())
1864 S, TemplateParams, CAP->getElementType(), CAA->getElementType(), Info,
1869 case Type::DependentSizedArray: {
1878 S, TemplateParams, DAP->getElementType(), AA->getElementType(),
1892 "saw non-type template parameter with wrong depth");
1893 if (
const auto *CAA = dyn_cast<ConstantArrayType>(AA)) {
1894 llvm::APSInt Size(CAA->getSize());
1897 true, Info, Deduced);
1899 if (
const auto *DAA = dyn_cast<DependentSizedArrayType>(AA))
1900 if (DAA->getSizeExpr())
1902 S, TemplateParams, NTTP, DAA->getSizeExpr(), Info, Deduced);
1911 case Type::FunctionProto: {
1917 if (FPP->getMethodQuals() != FPA->getMethodQuals() ||
1918 FPP->getRefQualifier() != FPA->getRefQualifier() ||
1919 FPP->isVariadic() != FPA->isVariadic())
1924 S, TemplateParams, FPP->getReturnType(), FPA->getReturnType(),
1933 S, TemplateParams, FPP->param_type_begin(), FPP->getNumParams(),
1934 FPA->param_type_begin(), FPA->getNumParams(), Info, Deduced,
1945 Expr *NoexceptExpr = FPP->getNoexceptExpr();
1950 "saw non-type template parameter with wrong depth");
1952 llvm::APSInt Noexcept(1);
1953 switch (FPA->canThrow()) {
1963 true, Info, Deduced);
1966 if (
Expr *ArgNoexceptExpr = FPA->getNoexceptExpr())
1968 S, TemplateParams, NTTP, ArgNoexceptExpr, Info, Deduced);
1981 case Type::InjectedClassName:
1990 case Type::TemplateSpecialization: {
2015 Deduced = DeducedOrig;
2019 TemplateParams,
P, Info, Deduced);
2033 case Type::MemberPointer: {
2050 S, TemplateParams, PPT, APT, Info, Deduced, SubTDF);
2054 S, TemplateParams,
QualType(MPP->getClass(), 0),
2055 QualType(MPA->getClass(), 0), Info, Deduced, SubTDF);
2063 case Type::BlockPointer: {
2069 S, TemplateParams, BPP->getPointeeType(), BPA->getPointeeType(), Info,
2076 case Type::ExtVector: {
2081 if (VP->getNumElements() != VA->getNumElements())
2083 ElementType = VA->getElementType();
2088 ElementType = VA->getElementType();
2094 S, TemplateParams, VP->getElementType(), ElementType, Info, Deduced,
2098 case Type::DependentVector: {
2104 S, TemplateParams, VP->getElementType(), VA->getElementType(),
2105 Info, Deduced, TDF);
2116 ArgSize = VA->getNumElements();
2128 S, TemplateParams, VP->getElementType(), VA->getElementType(),
2129 Info, Deduced, TDF);
2140 VA->getSizeExpr(), Info, Deduced);
2149 case Type::DependentSizedExtVector: {
2155 S, TemplateParams, VP->getElementType(), VA->getElementType(),
2156 Info, Deduced, TDF);
2167 ArgSize = VA->getNumElements();
2179 S, TemplateParams, VP->getElementType(), VA->getElementType(),
2180 Info, Deduced, TDF);
2191 VA->getSizeExpr(), Info, Deduced);
2201 case Type::ConstantMatrix: {
2208 if (MP->getNumRows() != MA->getNumRows() ||
2209 MP->getNumColumns() != MA->getNumColumns()) {
2214 S, TemplateParams, MP->getElementType(), MA->getElementType(), Info,
2218 case Type::DependentSizedMatrix: {
2227 Info, Deduced, TDF);
2232 auto DeduceMatrixArg =
2233 [&S, &Info, &Deduced, &TemplateParams](
2237 const auto *ACM = dyn_cast<ConstantMatrixType>(A);
2238 const auto *ADM = dyn_cast<DependentSizedMatrixType>(A);
2239 if (!ParamExpr->isValueDependent()) {
2240 std::optional<llvm::APSInt> ParamConst =
2241 ParamExpr->getIntegerConstantExpr(S.
Context);
2246 if ((ACM->*GetArgDimension)() == *ParamConst)
2251 Expr *ArgExpr = (ADM->*GetArgDimensionExpr)();
2252 if (std::optional<llvm::APSInt> ArgConst =
2254 if (*ArgConst == *ParamConst)
2265 llvm::APSInt ArgConst(
2267 ArgConst = (ACM->*GetArgDimension)();
2270 true, Info, Deduced);
2274 (ADM->*GetArgDimensionExpr)(),
2278 if (
auto Result = DeduceMatrixArg(MP->getRowExpr(), MA,
2284 return DeduceMatrixArg(MP->getColumnExpr(), MA,
2292 case Type::DependentAddressSpace: {
2298 S, TemplateParams, ASP->getPointeeType(), ASA->getPointeeType(),
2299 Info, Deduced, TDF);
2310 S, TemplateParams, NTTP, ASA->getAddrSpaceExpr(), Info, Deduced);
2320 S, TemplateParams, ASP->getPointeeType(),
2333 true, Info, Deduced);
2338 case Type::DependentBitInt: {
2342 if (IP->isUnsigned() != IA->isUnsigned())
2351 ArgSize = IA->getNumBits();
2359 if (IP->isUnsigned() != IA->isUnsigned())
2367 case Type::TypeOfExpr:
2369 case Type::DependentName:
2370 case Type::UnresolvedUsing:
2371 case Type::Decltype:
2372 case Type::UnaryTransform:
2373 case Type::DeducedTemplateSpecialization:
2374 case Type::DependentTemplateSpecialization:
2375 case Type::PackExpansion:
2377 case Type::ArrayParameter:
2381 case Type::PackIndexing: {
2391 llvm_unreachable(
"Invalid Type Class!");
2405 switch (
P.getKind()) {
2407 llvm_unreachable(
"Null template argument in parameter list");
2412 S, TemplateParams,
P.getAsType(), A.
getAsType(), Info, Deduced, 0);
2427 llvm_unreachable(
"caller should handle pack expansions");
2494 llvm_unreachable(
"Unknown template argument kind");
2500 llvm_unreachable(
"Argument packs should be expanded by the caller!");
2503 llvm_unreachable(
"Invalid TemplateArgument Kind!");
2516 if (ArgIdx == Args.size())
2523 assert(ArgIdx == Args.size() - 1 &&
"Pack not at the end of argument list?");
2526 return ArgIdx < Args.size();
2532 bool FoundPackExpansion =
false;
2533 for (
const auto &A : Args) {
2534 if (FoundPackExpansion)
2542 if (A.isPackExpansion())
2543 FoundPackExpansion =
true;
2556 if (
PackFold == PackFold::ArgumentToParameter)
2572 if (!
P.isPackExpansion()) {
2577 return NumberOfArgumentsMustMatch
2584 if (As[ArgIdx].isPackExpansion())
2589 if (
PackFold == PackFold::ArgumentToParameter)
2611 PackDeductionScope PackScope(S, TemplateParams, Deduced, Info, Pattern);
2617 PackScope.hasNextElement();
2620 if (
PackFold == PackFold::ArgumentToParameter)
2628 PackScope.nextPackElement();
2633 if (
auto Result = PackScope.finish();
2645 bool NumberOfArgumentsMustMatch) {
2646 return ::DeduceTemplateArguments(*
this, TemplateParams, Ps, As, Info, Deduced,
2647 NumberOfArgumentsMustMatch);
2655 bool PackExpansionMatchesPack =
false) {
2658 if (PackExpansionMatchesPack &&
X.isPackExpansion() && !Y.
isPackExpansion())
2659 X =
X.getPackExpansionPattern();
2664 switch (
X.getKind()) {
2666 llvm_unreachable(
"Comparing NULL template argument");
2689 return X.structurallyEquals(Y);
2692 llvm::FoldingSetNodeID XID, YID;
2693 X.getAsExpr()->Profile(XID, Context,
true);
2699 unsigned PackIterationSize =
X.pack_size();
2708 bool XHasMoreArg =
X.pack_size() > Y.
pack_size();
2709 if (!(XHasMoreArg &&
X.pack_elements().back().isPackExpansion()) &&
2710 !(!XHasMoreArg && Y.
pack_elements().back().isPackExpansion()))
2719 for (
unsigned i = 0; i < PackIterationSize; ++i)
2721 PackExpansionMatchesPack))
2727 llvm_unreachable(
"Invalid TemplateArgument Kind!");
2749 llvm_unreachable(
"Can't get a NULL template argument here");
2784 Builder.MakeTrivial(
Context, DTN->getQualifier(),
Loc);
2787 Builder.MakeTrivial(
Context, QTN->getQualifier(),
Loc);
2804 llvm_unreachable(
"Invalid TemplateArgument Kind!");
2822 unsigned ArgumentPackIndex) {
2844 CanonicalPackedArgsBuilder;
2852 "deduced nested pack");
2859 diag::err_template_arg_deduced_incomplete_pack)
2863 if (ConvertArg(InnerArg, SugaredPackedArgsBuilder.size()))
2867 SugaredPackedArgsBuilder.push_back(SugaredOutput.pop_back_val());
2868 CanonicalPackedArgsBuilder.push_back(CanonicalOutput.pop_back_val());
2873 if (SugaredPackedArgsBuilder.empty()) {
2878 if (
auto *NTTP = dyn_cast<NonTypeTemplateParmDecl>(Param)) {
2880 NTTP, SugaredOutput,
2883 S.
SubstType(NTTP->getType(), Args, NTTP->getLocation(),
2884 NTTP->getDeclName()).isNull())
2886 }
else if (
auto *TTP = dyn_cast<TemplateTemplateParmDecl>(Param)) {
2897 SugaredOutput.push_back(
2900 S.
Context, CanonicalPackedArgsBuilder));
2904 return ConvertArg(Arg, 0);
2910template <
typename TemplateDeclT>
2912 Sema &S, TemplateDeclT *Template,
bool IsDeduced,
2918 unsigned NumAlreadyConverted = 0,
bool PartialOverloading =
false) {
2921 for (
unsigned I = 0, N = TemplateParams->
size(); I != N; ++I) {
2930 PackDeductionScope(S, TemplateParams, Deduced, Info, I).finish();
2935 if (!Deduced[I].isNull()) {
2936 if (I < NumAlreadyConverted) {
2941 CurrentInstantiationScope->getPartiallySubstitutedPack() == Param) {
2944 CurrentInstantiationScope->ResetPartiallySubstitutedPack();
2951 SugaredBuilder.push_back(Deduced[I]);
2952 CanonicalBuilder.push_back(
2961 IsDeduced, SugaredBuilder,
2962 CanonicalBuilder)) {
2975 bool HasDefaultArg =
false;
2978 assert(isa<ClassTemplatePartialSpecializationDecl>(Template) ||
2979 isa<VarTemplatePartialSpecializationDecl>(Template));
2988 if (Rec->isLambda())
2989 if (
auto *Method = dyn_cast<CXXMethodDecl>(Rec->getDeclContext())) {
2991 ThisTypeQuals = Method->getMethodQualifiers();
2999 SugaredBuilder, CanonicalBuilder, HasDefaultArg);
3008 if (PartialOverloading)
break;
3033 if (
auto *DC = dyn_cast<DeclContext>(D))
3039 static constexpr bool value =
false;
3043 static constexpr bool value =
true;
3047 static constexpr bool value =
true;
3049template <
typename TemplateDeclT>
3064template <
typename TemplateDeclT>
3071 Template->getAssociatedConstraints(AssociatedConstraints);
3073 std::optional<ArrayRef<TemplateArgument>> Innermost;
3077 Innermost = CanonicalDeducedArgs;
3080 Template, Template->getDeclContext(),
false, Innermost,
3104template <
typename T>
3105static std::enable_if_t<IsPartialSpecialization<T>::value,
3108 Sema &S,
T *Partial,
bool IsPartialOrdering,
3124 S, Partial, IsPartialOrdering, Deduced, Info, SugaredBuilder,
3135 Info.
reset(SugaredDeducedArgumentList, CanonicalDeducedArgumentList);
3143 auto *Template = Partial->getSpecializedTemplate();
3145 Partial->getTemplateArgsAsWritten();
3156 if (
ParamIdx >= Partial->getTemplateParameters()->size())
3157 ParamIdx = Partial->getTemplateParameters()->size() - 1;
3160 Partial->getTemplateParameters()->getParam(
ParamIdx));
3162 Info.
FirstArg = (*PartialTemplArgInfo)[ArgIdx].getArgument();
3168 CanonicalConvertedInstArgs;
3170 Template, Partial->getLocation(), InstArgs,
false,
3171 SugaredConvertedInstArgs, CanonicalConvertedInstArgs,
3178 for (
unsigned I = 0, E = TemplateParams->
size(); I != E; ++I) {
3181 IsPartialOrdering)) {
3193 CanonicalBuilder, Info);
3221 SugaredBuilder, CanonicalBuilder,
3229 for (
unsigned I = 0, E = TemplateParams->
size(); I != E; ++I) {
3244 CanonicalBuilder, Info);
3269 S, TD,
false, Deduced, Info, SugaredBuilder,
3278 CanonicalBuilder, Info);
3288template <
typename T>
3289static std::enable_if_t<IsPartialSpecialization<T>::value,
3294 if (Partial->isInvalidDecl())
3313 Deduced.resize(Partial->getTemplateParameters()->size());
3315 S, Partial->getTemplateParameters(),
3316 Partial->getTemplateArgs().asArray(), TemplateArgs, Info, Deduced,
3332 Result = ::FinishTemplateArgumentDeduction(S, Partial,
3334 TemplateArgs, Deduced, Info);
3343 return ::DeduceTemplateArguments(*
this, Partial, TemplateArgs, Info);
3349 return ::DeduceTemplateArguments(*
this, Partial, TemplateArgs, Info);
3359 if (
const auto *CTD = dyn_cast<ClassTemplateDecl>(TD)) {
3362 }
else if (
const auto *
AliasTemplate = dyn_cast<TypeAliasTemplateDecl>(TD)) {
3364 ->getUnderlyingType()
3365 .getCanonicalType();
3367 assert(
false &&
"Expected a class or alias template");
3386 return DeducedResult;
3399 Result = ::FinishTemplateArgumentDeduction(*this, TD, Deduced, Info);
3408 return Spec->getTemplateName().getAsTemplateDecl() !=
nullptr;
3458 if (ExplicitTemplateArgs.
size() == 0) {
3462 ParamTypes.push_back(
P->getType());
3492 ExplicitTemplateArgs,
true, SugaredBuilder,
3496 unsigned Index = SugaredBuilder.size();
3497 if (Index >= TemplateParams->
size())
3510 CanonicalExplicitArgumentList);
3522 unsigned PartiallySubstitutedPackIndex = -1u;
3523 if (!CanonicalBuilder.empty()) {
3526 auto *Param = TemplateParams->
getParam(CanonicalBuilder.size() - 1);
3530 if (!Expansions || Arg.
pack_size() < *Expansions) {
3531 PartiallySubstitutedPackIndex = CanonicalBuilder.size() - 1;
3540 assert(Proto &&
"Function template does not have a prototype?");
3548 SugaredExplicitArgumentList->
asArray(),
3558 nullptr, ExtParamInfos))
3575 ThisTypeQuals = Method->getMethodQualifiers();
3589 Diag(
Function->getLocation(), diag::err_kern_type_not_void_return)
3600 nullptr, ExtParamInfos))
3624 Deduced.reserve(TemplateParams->
size());
3625 for (
unsigned I = 0, N = SugaredExplicitArgumentList->
size(); I != N; ++I) {
3627 if (I == PartiallySubstitutedPackIndex)
3630 Deduced.push_back(Arg);
3699 if (AQuals == DeducedAQuals) {
3717 bool ObjCLifetimeConversion =
false;
3721 ObjCLifetimeConversion) ||
3767 if (PD->isParameterPack()) {
3768 unsigned NumExpansions =
3770 if (Idx + NumExpansions >
ParamIdx)
3772 Idx += NumExpansions;
3780 llvm_unreachable(
"parameter index would not be produced from template");
3792 return isa<CXXConstructorDecl>(D)
3793 ? cast<CXXConstructorDecl>(D)->getExplicitSpecifier()
3794 : cast<CXXConversionDecl>(D)->getExplicitSpecifier();
3797 isa<CXXConstructorDecl>(D)
3798 ? cast<CXXConstructorDecl>(D)->setExplicitSpecifier(ES)
3799 : cast<CXXConversionDecl>(D)->setExplicitSpecifier(ES);
3810 S, Info.
getLocation(), FunctionTemplate, DeducedArgs,
3837 bool PartialOverloading, llvm::function_ref<
bool()> CheckNonDependent) {
3861 NumExplicitlySpecified, PartialOverloading);
3874 if (CheckNonDependent())
3882 Info.
reset(SugaredDeducedArgumentList, CanonicalDeducedArgumentList);
3914 assert(
Specialization->getPrimaryTemplate()->getCanonicalDecl() ==
3920 CanonicalDeducedArgumentList &&
3940 if (!PartialOverloading ||
3941 (CanonicalBuilder.size() ==
3958 if (isa<CXXConstructorDecl, CXXConversionDecl>(
Specialization)) {
3967 if (OriginalCallArgs) {
3972 llvm::SmallDenseMap<std::pair<unsigned, QualType>,
QualType> DeducedATypes;
3973 for (
unsigned I = 0, N = OriginalCallArgs->size(); I != N; ++I) {
3977 unsigned ExplicitOffset =
3997 if (CacheEntry.
isNull()) {
4006 DeducedA = CacheEntry;
4021 SuppressedDiagnosticsMap::iterator
4041 if (Method->isImplicitObjectMemberFunction()) {
4062 bool ParamWasReference,
4071 if (ParamWasReference)
4088 nullptr, FailedTSC))
4129 if (ArgType.
isNull())
continue;
4149 Deduced(TemplateParams->
size());
4152 S, TemplateParams, ParamType, ArgType, Info, Deduced, TDF);
4190 assert(Arg &&
"expected a non-null arg expression");
4192 ParamRefType !=
nullptr, FailedTSC);
4200 assert(Arg &&
"expected a non-null arg expression");
4255 (isa<PointerType>(ParamType) &&
4274 bool DecomposedParam,
unsigned ArgIdx,
unsigned TDF,
4299 ElTy = ArrTy->getElementType();
4309 if (isa<DesignatedInitExpr>(E))
4316 S, TemplateParams, 0, ElTy, E->getType(),
4318 OriginalCallArgs,
true, ArgIdx, TDF);
4326 if (
auto *DependentArrTy = dyn_cast_or_null<DependentSizedArrayType>(ArrTy)) {
4337 S, TemplateParams, NTTP, llvm::APSInt(Size),
T,
4338 true, Info, Deduced);
4356 bool DecomposedParam,
unsigned ArgIdx,
unsigned TDF,
4359 QualType OrigParamType = ParamType;
4364 S, TemplateParams, FirstInnerIndex, ParamType, ArgType,
4365 ArgClassification, Arg, TDF, FailedTSC))
4369 if (
InitListExpr *ILE = dyn_cast_if_present<InitListExpr>(Arg))
4371 Deduced, OriginalCallArgs, ArgIdx, TDF);
4379 OriginalCallArgs.push_back(
4382 ArgType, Info, Deduced, TDF);
4414 bool PartialOverloading,
bool AggregateDeductionCandidate,
4421 unsigned NumParams =
Function->getNumParams();
4422 bool HasExplicitObject =
false;
4423 int ExplicitObjectOffset = 0;
4424 if (
Function->hasCXXExplicitFunctionObjectParameter()) {
4425 HasExplicitObject =
true;
4426 ExplicitObjectOffset = 1;
4435 if (Args.size() <
Function->getMinRequiredExplicitArguments() &&
4436 !PartialOverloading)
4439 PartialOverloading)) {
4441 if (Proto->isTemplateVariadic())
4443 else if (!Proto->isVariadic())
4454 unsigned NumExplicitlySpecified = 0;
4455 if (ExplicitTemplateArgs) {
4458 Result = SubstituteExplicitTemplateArguments(
4459 FunctionTemplate, *ExplicitTemplateArgs, Deduced, ParamTypes, nullptr,
4465 NumExplicitlySpecified = Deduced.size();
4468 for (
unsigned I = 0; I != NumParams; ++I)
4469 ParamTypes.push_back(
Function->getParamDecl(I)->getType());
4475 auto DeduceCallArgument = [&](
QualType ParamType,
unsigned ArgIdx,
4476 bool ExplicitObjetArgument) {
4484 if (ExplicitObjetArgument) {
4487 *
this, TemplateParams, FirstInnerIndex, ParamType, ObjectType,
4488 ObjectClassification,
4489 nullptr, Info, Deduced, OriginalCallArgs,
4495 *
this, TemplateParams, FirstInnerIndex, ParamType,
4496 Args[ArgIdx]->getType(), Args[ArgIdx]->Classify(
getASTContext()),
4497 Args[ArgIdx], Info, Deduced, OriginalCallArgs,
false,
4502 Deduced.resize(TemplateParams->
size());
4504 for (
unsigned ParamIdx = 0, NumParamTypes = ParamTypes.size(), ArgIdx = 0;
4509 dyn_cast<PackExpansionType>(ParamType);
4510 if (!ParamExpansion) {
4512 if (ArgIdx >= Args.size() && !(HasExplicitObject &&
ParamIdx == 0))
4515 ParamTypesForArgChecking.push_back(ParamType);
4517 if (
ParamIdx == 0 && HasExplicitObject) {
4518 if (
auto Result = DeduceCallArgument(ParamType, 0,
4525 if (
auto Result = DeduceCallArgument(ParamType, ArgIdx++,
4533 bool IsTrailingPack =
ParamIdx + 1 == NumParamTypes;
4536 PackDeductionScope PackScope(*
this, TemplateParams, Deduced, Info,
4538 AggregateDeductionCandidate && IsTrailingPack);
4556 if (IsTrailingPack || PackScope.hasFixedArity()) {
4557 for (; ArgIdx < Args.size() && PackScope.hasNextElement();
4558 PackScope.nextPackElement(), ++ArgIdx) {
4559 ParamTypesForArgChecking.push_back(ParamPattern);
4560 if (
auto Result = DeduceCallArgument(ParamPattern, ArgIdx,
4569 std::optional<unsigned> NumExpansions =
4571 if (NumExpansions && !PackScope.isPartiallyExpanded()) {
4572 for (
unsigned I = 0; I != *NumExpansions && ArgIdx < Args.size();
4574 ParamTypesForArgChecking.push_back(ParamPattern);
4577 PackScope.nextPackElement();
4579 }
else if (!IsTrailingPack && !PackScope.isPartiallyExpanded() &&
4580 PackScope.isDeducedFromEarlierParameter()) {
4593 std::optional<unsigned> ArgPosAfterSubstitution =
4594 PackScope.getSavedPackSizeIfAllEqual();
4595 if (!ArgPosAfterSubstitution)
4598 unsigned PackArgEnd = ArgIdx + *ArgPosAfterSubstitution;
4599 for (; ArgIdx < PackArgEnd && ArgIdx < Args.size(); ArgIdx++) {
4600 ParamTypesForArgChecking.push_back(ParamPattern);
4601 if (
auto Result = DeduceCallArgument(ParamPattern, ArgIdx,
4606 PackScope.nextPackElement();
4613 if (
auto Result = PackScope.finish();
4624 Result = FinishTemplateArgumentDeduction(
4625 FunctionTemplate, Deduced, NumExplicitlySpecified, Specialization, Info,
4626 &OriginalCallArgs, PartialOverloading, [&, CallingCtx]() {
4627 ContextRAII SavedContext(*this, CallingCtx);
4628 return CheckNonDependent(ParamTypesForArgChecking);
4636 bool AdjustExceptionSpec) {
4637 if (ArgFunctionType.
isNull())
4638 return ArgFunctionType;
4643 bool Rebuild =
false;
4646 if (EPI.ExtInfo.getCC() != CC) {
4647 EPI.
ExtInfo = EPI.ExtInfo.withCallingConv(CC);
4651 bool NoReturn = FunctionTypeP->getNoReturnAttr();
4652 if (EPI.ExtInfo.getNoReturn() != NoReturn) {
4653 EPI.ExtInfo = EPI.ExtInfo.withNoReturn(NoReturn);
4657 if (AdjustExceptionSpec && (FunctionTypeP->hasExceptionSpec() ||
4659 EPI.ExceptionSpec = FunctionTypeP->getExtProtoInfo().ExceptionSpec;
4664 return ArgFunctionType;
4702 bool IsAddressOfFunction) {
4714 unsigned NumExplicitlySpecified = 0;
4716 if (ExplicitTemplateArgs) {
4719 Result = SubstituteExplicitTemplateArguments(
4720 FunctionTemplate, *ExplicitTemplateArgs, Deduced, ParamTypes,
4721 &FunctionType, Info);
4726 NumExplicitlySpecified = Deduced.size();
4732 if (!IsAddressOfFunction)
4741 Deduced.resize(TemplateParams->
size());
4745 bool HasDeducedReturnType =
false;
4747 Function->getReturnType()->getContainedAutoType()) {
4749 HasDeducedReturnType =
true;
4757 *
this, TemplateParams,
FunctionType, ArgFunctionType, Info, Deduced,
4765 Result = FinishTemplateArgumentDeduction(FunctionTemplate, Deduced,
4766 NumExplicitlySpecified,
4767 Specialization, Info);
4774 if (HasDeducedReturnType && IsAddressOfFunction &&
4790 if (!IsAddressOfFunction) {
4796 if (HasDeducedReturnType) {
4805 if (!ArgFunctionType.
isNull()) {
4810 SpecializationType, ArgFunctionType)) {
4843 P = PRef->getPointeeType();
4855 P =
P.getUnqualifiedType();
4862 assert(!A->
isReferenceType() &&
"Reference types were handled above");
4867 if (
P->isArrayType())
4872 else if (
P->isFunctionType())
4877 P =
P.getUnqualifiedType();
4899 Deduced.resize(TemplateParams->
size());
4928 ParamType, ObjectType, ObjectClassification,
4929 nullptr, Info, Deduced, OriginalCallArgs,
4936 *
this, TemplateParams,
P, A, Info, Deduced, TDF);
4946 Result = FinishTemplateArgumentDeduction(ConversionTemplate, Deduced, 0,
4947 ConversionSpecialized, Info,
4950 Specialization = cast_or_null<CXXConversionDecl>(ConversionSpecialized);
4983 bool IsAddressOfFunction) {
4986 IsAddressOfFunction);
4990 struct DependentAuto {
bool IsPack; };
4994 class SubstituteDeducedTypeTransform :
4997 bool ReplacementIsPack;
5002 SubstituteDeducedTypeTransform(
Sema &SemaRef, DependentAuto DA)
5004 ReplacementIsPack(DA.IsPack), UseTypeSugar(
true) {}
5006 SubstituteDeducedTypeTransform(
Sema &SemaRef,
QualType Replacement,
5007 bool UseTypeSugar =
true)
5009 Replacement(Replacement), ReplacementIsPack(
false),
5010 UseTypeSugar(UseTypeSugar) {}
5013 assert(isa<TemplateTypeParmType>(Replacement) &&
5014 "unexpected unsugared replacement kind");
5032 return TransformDesugared(TLB, TL);
5034 QualType Result = SemaRef.Context.getAutoType(
5043 QualType TransformDeducedTemplateSpecializationType(
5046 return TransformDesugared(TLB, TL);
5048 QualType Result = SemaRef.Context.getDeducedTemplateSpecializationType(
5050 Replacement, Replacement.isNull());
5068 return inherited::TransformExceptionSpec(
Loc, ESI, Exceptions, Changed);
5076 return TransformType(TLB, TL);
5092 Deduced,
TypeLoc.getNameLoc())));
5093 for (
unsigned I = 0,
C =
TypeLoc.getNumArgs(); I !=
C; ++I)
5099 SugaredConverted, CanonicalConverted))
5109 llvm::raw_string_ostream OS(Buf);
5110 OS <<
"'" << Concept->getName();
5111 if (
TypeLoc.hasExplicitTemplateArgs()) {
5114 Type.getTypeConstraintConcept()->getTemplateParameters());
5119 diag::err_placeholder_constraints_not_satisfied)
5148 bool IgnoreConstraints,
5151 if (
Init->containsErrors())
5164 DependentAuto DependentResult = {
5167 if (!DependentDeduction &&
5169 Init->containsUnexpandedParameterPack())) {
5170 Result = SubstituteDeducedTypeTransform(*
this, DependentResult).Apply(
Type);
5171 assert(!
Result.isNull() &&
"substituting DependentTy can't fail");
5176 auto *String = dyn_cast<StringLiteral>(
Init);
5178 Diag(
Type.getBeginLoc(), diag::ext_c23_auto_non_plain_identifier);
5180 Result = SubstituteDeducedTypeTransform(*
this, DependentResult).Apply(TL);
5181 assert(!
Result.isNull() &&
"substituting DependentTy can't fail");
5187 Diag(
Type.getBeginLoc(), diag::ext_c23_auto_non_plain_identifier);
5190 auto *InitList = dyn_cast<InitListExpr>(
Init);
5192 Diag(
Init->getBeginLoc(), diag::err_auto_init_list_from_c)
5204 if (
Init->isTypeDependent()) {
5206 SubstituteDeducedTypeTransform(*
this, DependentResult).Apply(
Type);
5207 assert(!
Result.isNull() &&
"substituting DependentTy can't fail");
5219 Diag(
Init->getBeginLoc(), diag::err_decltype_auto_initializer_list);
5232 nullptr,
false,
false,
false);
5246 for (
Expr *
Init : InitList->inits()) {
5249 if (isa<DesignatedInitExpr>(
Init))
5252 *
this, TemplateParamsSt.get(), 0, TemplArg,
Init->getType(),
5254 OriginalCallArgs,
true,
5260 <<
Init->getSourceRange();
5263 return DeductionFailed(TDK);
5268 DeducedFromInitRange =
Init->getSourceRange();
5272 Diag(
Loc, diag::err_auto_bitfield);
5276 SubstituteDeducedTypeTransform(*
this, TemplArg).Apply(
Type);
5277 assert(!FuncParam.
isNull() &&
5278 "substituting template parameter for 'auto' failed");
5280 *
this, TemplateParamsSt.get(), 0, FuncParam,
Init->getType(),
5282 OriginalCallArgs,
false, 0, 0,
5285 return DeductionFailed(TDK);
5322 assert((
bool)InitList == OriginalArg.DecomposedParam &&
5323 "decomposed non-init-list in auto deduction?");
5328 return DeductionFailed(TDK);
5338 return SubstituteDeducedTypeTransform(*
this, TypeToReplaceAuto)
5339 .TransformType(TypeWithAuto);
5345 return SubstituteDeducedTypeTransform(*
this, TypeToReplaceAuto)
5346 .TransformType(TypeWithAuto);
5350 return SubstituteDeducedTypeTransform(*
this, DependentAuto{
false})
5351 .TransformType(TypeWithAuto);
5356 return SubstituteDeducedTypeTransform(*
this, DependentAuto{
false})
5357 .TransformType(TypeWithAuto);
5362 return SubstituteDeducedTypeTransform(*
this, TypeToReplaceAuto,
5364 .TransformType(TypeWithAuto);
5369 return SubstituteDeducedTypeTransform(*
this, TypeToReplaceAuto,
5371 .TransformType(TypeWithAuto);
5375 if (isa<InitListExpr>(
Init))
5378 ? diag::err_init_capture_deduction_failure_from_init_list
5379 : diag::err_auto_var_deduction_failure_from_init_list)
5383 VDecl->
isInitCapture() ? diag::err_init_capture_deduction_failure
5384 : diag::err_auto_var_deduction_failure)
5386 <<
Init->getSourceRange();
5418 "failed to deduce lambda return type");
5445 Diag(
Loc, diag::err_auto_fn_used_before_defined) << FD;
5449 return StillUndeduced;
5493 "expected a member function with no explicit object parameter");
5518 assert(Proto1 && Proto2 &&
"Function templates must have prototypes");
5521 Deduced.resize(TemplateParams->
size());
5530 Args1.data(), Args1.size(), Info, Deduced,
5541 S, TemplateParams, Proto2->getReturnType(), Proto1->
getReturnType(),
5551 S, TemplateParams, FD2->
getType(), FD1->
getType(), Info, Deduced,
5564 unsigned ArgIdx = 0, NumArgs = Deduced.size();
5565 for (; ArgIdx != NumArgs; ++ArgIdx)
5566 if (Deduced[ArgIdx].isNull())
5573 if (ArgIdx == NumArgs) {
5580 llvm::SmallBitVector UsedParameters(TemplateParams->
size());
5583 for (
unsigned I = 0, N = Args2.size(); I != N; ++I)
5585 TemplateParams->
getDepth(), UsedParameters);
5591 TemplateParams->
getDepth(), UsedParameters);
5617 false, TemplateParams->
getDepth(), UsedParameters);
5621 for (; ArgIdx != NumArgs; ++ArgIdx)
5624 if (Deduced[ArgIdx].isNull() && UsedParameters[ArgIdx])
5666 bool ShouldConvert1 =
false;
5667 bool ShouldConvert2 =
false;
5678 const CXXMethodDecl *Method1 = dyn_cast<CXXMethodDecl>(FD1);
5679 const CXXMethodDecl *Method2 = dyn_cast<CXXMethodDecl>(FD2);
5689 ShouldConvert1 = Method1 && !Method1->isExplicitObjectMemberFunction();
5691 if (ShouldConvert1) {
5695 : Proto2->param_type_begin()[0]->isRValueReferenceType();
5699 Args1.push_back(Obj1Ty);
5701 if (ShouldConvert2) {
5704 ? Method1->getRefQualifier() ==
RQ_RValue
5709 Args2.push_back(Obj2Ty);
5711 size_t NumComparedArguments = NumCallArguments1;
5715 ++NumComparedArguments;
5719 Args2.insert(Args2.end(), Proto2->param_type_begin(),
5720 Proto2->param_type_end());
5725 Args1.resize(std::min(Args1.size(), NumComparedArguments));
5726 Args2.resize(std::min(Args2.size(), NumComparedArguments));
5729 std::reverse(Args2.begin(), Args2.end());
5738 if (Better1 != Better2)
5739 return Better1 ? FT1 : FT2;
5741 if (!Better1 && !Better2)
5750 Param1.reserve(FD1->
param_size() + ShouldConvert1);
5752 Param1.push_back(Obj1Ty);
5754 Param1.push_back(
P->getType());
5757 Param2.reserve(FD2->
param_size() + ShouldConvert2);
5759 Param2.push_back(Obj2Ty);
5761 Param2.push_back(
P->getType());
5763 unsigned NumParams1 = Param1.size();
5764 unsigned NumParams2 = Param2.size();
5770 if (Variadic1 != Variadic2) {
5771 if (Variadic1 && NumParams1 > NumParams2)
5773 if (Variadic2 && NumParams2 > NumParams1)
5779 for (
int i = 0, e = std::min(NumParams1, NumParams2); i < e; ++i) {
5780 QualType T1 = Param1[i].getCanonicalType();
5781 QualType T2 = Param2[i].getCanonicalType();
5782 auto *TST1 = dyn_cast<TemplateSpecializationType>(T1);
5783 auto *TST2 = dyn_cast<TemplateSpecializationType>(T2);
5788 assert(TST1->template_arguments().size() ==
5789 TST2->template_arguments().size());
5794 bool IsPackExpansion1 =
5796 bool IsPackExpansion2 =
5798 if (PackSize1 != PackSize2 && IsPackExpansion1 != IsPackExpansion2) {
5799 if (PackSize1 > PackSize2 && IsPackExpansion1)
5801 if (PackSize1 < PackSize2 && IsPackExpansion2)
5823 if (TPL1->
size() != TPL2->
size() || NumParams1 != NumParams2)
5839 for (
unsigned i = 0; i < NumParams1; ++i)
5855 bool AtLeastAsConstrained1, AtLeastAsConstrained2;
5860 if (AtLeastAsConstrained1 == AtLeastAsConstrained2)
5862 return AtLeastAsConstrained1 ? FT1 : FT2;
5906 bool Complain,
QualType TargetType) {
5907 if (SpecBegin == SpecEnd) {
5915 if (SpecBegin + 1 == SpecEnd)
5922 = cast<FunctionDecl>(*Best)->getPrimaryTemplate();
5923 assert(BestTemplate &&
"Not a function template specialization?");
5926 = cast<FunctionDecl>(*I)->getPrimaryTemplate();
5927 assert(Challenger &&
"Not a function template specialization?");
5932 BestTemplate = Challenger;
5938 bool Ambiguous =
false;
5941 = cast<FunctionDecl>(*I)->getPrimaryTemplate();
5963 const auto *FD = cast<FunctionDecl>(*I);
5965 FD->getPrimaryTemplate()->getTemplateParameters(),
5966 *FD->getTemplateSpecializationArgs());
5967 if (!TargetType.
isNull())
5969 Diag((*I)->getLocation(), PD);
5988 "not for function templates");
5998 bool AtLeastAsConstrained1, AtLeastAsConstrained2;
6003 if (AtLeastAsConstrained1 == AtLeastAsConstrained2)
6005 return AtLeastAsConstrained1 ? FD1 : FD2;
6015template<
typename TemplateLikeDecl>
6017 TemplateLikeDecl *P2,
6046 Deduced.resize(P2->getTemplateParameters()->size());
6048 S, P2->getTemplateParameters(), T2, T1, Info, Deduced,
TDF_None,
6059 const auto *TST1 = cast<TemplateSpecializationType>(T1);
6060 bool AtLeastAsSpecialized;
6062 AtLeastAsSpecialized =
6063 FinishTemplateArgumentDeduction(
6064 S, P2, true, TST1->template_arguments(),
6065 Deduced, Info) == TemplateDeductionResult::Success;
6067 return AtLeastAsSpecialized;
6074 template <
typename T1,
typename T2,
6075 std::enable_if_t<std::is_same_v<T1, T2>,
bool> =
true>
6076 T2 *operator()(T1 *, T2 *P2) {
6079 template <
typename T1,
typename T2,
6080 std::enable_if_t<!std::is_same_v<T1, T2>,
bool> =
true>
6081 T1 *operator()(T1 *, T2 *) {
6087struct TemplateArgumentListAreEqual {
6089 TemplateArgumentListAreEqual(
ASTContext &Ctx) : Ctx(Ctx) {}
6091 template <
typename T1,
typename T2,
6092 std::enable_if_t<std::is_same_v<T1, T2>,
bool> =
true>
6093 bool operator()(T1 *PS1, T2 *PS2) {
6095 Args2 = PS2->getTemplateArgs().asArray();
6097 for (
unsigned I = 0, E = Args1.size(); I < E; ++I) {
6101 llvm::FoldingSetNodeID IDA, IDB;
6102 Args1[I].Profile(IDA, Ctx);
6103 Args2[I].Profile(IDB, Ctx);
6110 template <
typename T1,
typename T2,
6111 std::enable_if_t<!std::is_same_v<T1, T2>,
bool> =
true>
6112 bool operator()(T1 *Spec, T2 *Primary) {
6114 Args2 = Primary->getInjectedTemplateArgs();
6116 for (
unsigned I = 0, E = Args1.size(); I < E; ++I) {
6120 llvm::FoldingSetNodeID IDA, IDB;
6121 Args1[I].Profile(IDA, Ctx);
6155template <
typename TemplateLikeDecl,
typename PrimaryDel>
6156static TemplateLikeDecl *
6159 constexpr bool IsMoreSpecialThanPrimaryCheck =
6160 !std::is_same_v<TemplateLikeDecl, PrimaryDel>;
6163 if (IsMoreSpecialThanPrimaryCheck && !Better1)
6167 if (IsMoreSpecialThanPrimaryCheck && !Better2)
6173 if (Better1 != Better2)
6174 return Better1 ? P1 : GetP2()(P1, P2);
6176 if (!Better1 && !Better2)
6181 auto *TST1 = cast<TemplateSpecializationType>(T1);
6182 auto *TST2 = cast<TemplateSpecializationType>(T2);
6185 assert(TST1->template_arguments().size() ==
6186 TST2->template_arguments().size());
6191 bool IsPackExpansion1 =
6193 bool IsPackExpansion2 =
6195 if (PackSize1 != PackSize2 && IsPackExpansion1 != IsPackExpansion2) {
6196 if (PackSize1 > PackSize2 && IsPackExpansion1)
6197 return GetP2()(P1, P2);
6198 if (PackSize1 < PackSize2 && IsPackExpansion2)
6227 if (!TemplateArgumentListAreEqual(S.
getASTContext())(P1, P2))
6231 P1->getAssociatedConstraints(AC1);
6232 P2->getAssociatedConstraints(AC2);
6233 bool AtLeastAsConstrained1, AtLeastAsConstrained2;
6235 (IsMoreSpecialThanPrimaryCheck && !AtLeastAsConstrained1))
6239 if (AtLeastAsConstrained1 == AtLeastAsConstrained2)
6241 return AtLeastAsConstrained1 ? P1 : GetP2()(P1, P2);
6286 "the partial specializations being compared should specialize"
6287 " the same template.");
6349 for (
unsigned I = 0, N =
P->size(); I != N; ++I) {
6358 Arg,
QualType(),
P->getParam(I)->getLocation()));
6377 Deduced.resize(A->
size());
6392 IsDeduced ? PackFold::ArgumentToParameter
6393 : PackFold::ParameterToArgument) !=
6403 bool AtLeastAsSpecialized;
6405 AtLeastAsSpecialized =
6406 ::FinishTemplateArgumentDeduction(
6407 *this, AArg, true, PArgs, Deduced, Info) ==
6408 TemplateDeductionResult::Success;
6410 return AtLeastAsSpecialized;
6414struct MarkUsedTemplateParameterVisitor :
6416 llvm::SmallBitVector &
Used;
6419 MarkUsedTemplateParameterVisitor(llvm::SmallBitVector &
Used,
6424 if (
T->getDepth() == Depth)
6425 Used[
T->getIndex()] =
true;
6430 if (
auto *TTP = llvm::dyn_cast_or_null<TemplateTemplateParmDecl>(
6432 if (TTP->getDepth() == Depth)
6433 Used[TTP->getIndex()] =
true;
6440 if (
auto *NTTP = dyn_cast<NonTypeTemplateParmDecl>(E->
getDecl()))
6441 if (NTTP->getDepth() == Depth)
6442 Used[NTTP->getIndex()] =
true;
6455 llvm::SmallBitVector &
Used) {
6457 MarkUsedTemplateParameterVisitor(
Used, Depth)
6458 .TraverseStmt(
const_cast<Expr *
>(E));
6464 E = Expansion->getPattern();
6486 llvm::SmallBitVector &
Used) {
6493 OnlyDeduced, Depth,
Used);
6503 llvm::SmallBitVector &
Used) {
6504 if (
TemplateDecl *Template = Name.getAsTemplateDecl()) {
6506 = dyn_cast<TemplateTemplateParmDecl>(Template)) {
6507 if (TTP->getDepth() == Depth)
6508 Used[TTP->getIndex()] =
true;
6527 llvm::SmallBitVector &
Used) {
6539 cast<PointerType>(
T)->getPointeeType(),
6545 case Type::BlockPointer:
6547 cast<BlockPointerType>(
T)->getPointeeType(),
6553 case Type::LValueReference:
6554 case Type::RValueReference:
6556 cast<ReferenceType>(
T)->getPointeeType(),
6562 case Type::MemberPointer: {
6567 OnlyDeduced, Depth,
Used);
6571 case Type::DependentSizedArray:
6573 cast<DependentSizedArrayType>(
T)->getSizeExpr(),
6574 OnlyDeduced, Depth,
Used);
6578 case Type::ConstantArray:
6579 case Type::IncompleteArray:
6580 case Type::ArrayParameter:
6582 cast<ArrayType>(
T)->getElementType(),
6583 OnlyDeduced, Depth,
Used);
6586 case Type::ExtVector:
6588 cast<VectorType>(
T)->getElementType(),
6589 OnlyDeduced, Depth,
Used);
6592 case Type::DependentVector: {
6593 const auto *VecType = cast<DependentVectorType>(
T);
6600 case Type::DependentSizedExtVector: {
6602 = cast<DependentSizedExtVectorType>(
T);
6610 case Type::DependentAddressSpace: {
6612 cast<DependentAddressSpaceType>(
T);
6614 OnlyDeduced, Depth,
Used);
6617 OnlyDeduced, Depth,
Used);
6621 case Type::ConstantMatrix: {
6628 case Type::DependentSizedMatrix: {
6639 case Type::FunctionProto: {
6643 for (
unsigned I = 0, N = Proto->
getNumParams(); I != N; ++I) {
6648 if (!OnlyDeduced || I + 1 == N ||
6666 case Type::TemplateTypeParm: {
6673 case Type::SubstTemplateTypeParmPack: {
6675 = cast<SubstTemplateTypeParmPackType>(
T);
6679 OnlyDeduced, Depth,
Used);
6683 case Type::InjectedClassName:
6684 T = cast<InjectedClassNameType>(
T)->getInjectedSpecializationType();
6687 case Type::TemplateSpecialization: {
6689 = cast<TemplateSpecializationType>(
T);
6709 cast<ComplexType>(
T)->getElementType(),
6710 OnlyDeduced, Depth,
Used);
6716 cast<AtomicType>(
T)->getValueType(),
6717 OnlyDeduced, Depth,
Used);
6720 case Type::DependentName:
6723 cast<DependentNameType>(
T)->getQualifier(),
6724 OnlyDeduced, Depth,
Used);
6727 case Type::DependentTemplateSpecialization: {
6741 = cast<DependentTemplateSpecializationType>(
T);
6744 OnlyDeduced, Depth,
Used);
6754 OnlyDeduced, Depth,
Used);
6757 case Type::TypeOfExpr:
6760 cast<TypeOfExprType>(
T)->getUnderlyingExpr(),
6761 OnlyDeduced, Depth,
Used);
6764 case Type::Decltype:
6767 cast<DecltypeType>(
T)->getUnderlyingExpr(),
6768 OnlyDeduced, Depth,
Used);
6771 case Type::PackIndexing:
6774 OnlyDeduced, Depth,
Used);
6776 OnlyDeduced, Depth,
Used);
6780 case Type::UnaryTransform:
6784 OnlyDeduced, Depth,
Used);
6787 case Type::PackExpansion:
6789 cast<PackExpansionType>(
T)->getPattern(),
6790 OnlyDeduced, Depth,
Used);
6794 case Type::DeducedTemplateSpecialization:
6796 cast<DeducedType>(
T)->getDeducedType(),
6797 OnlyDeduced, Depth,
Used);
6799 case Type::DependentBitInt:
6801 cast<DependentBitIntType>(
T)->getNumBitsExpr(),
6802 OnlyDeduced, Depth,
Used);
6807 case Type::VariableArray:
6808 case Type::FunctionNoProto:
6811 case Type::ObjCInterface:
6812 case Type::ObjCObject:
6813 case Type::ObjCObjectPointer:
6814 case Type::UnresolvedUsing:
6817#define TYPE(Class, Base)
6818#define ABSTRACT_TYPE(Class, Base)
6819#define DEPENDENT_TYPE(Class, Base)
6820#define NON_CANONICAL_TYPE(Class, Base) case Type::Class:
6821#include "clang/AST/TypeNodes.inc"
6833 llvm::SmallBitVector &
Used) {
6851 OnlyDeduced, Depth,
Used);
6876 llvm::SmallBitVector &
Used) {
6891 bool OnlyDeduced,
unsigned Depth,
6892 llvm::SmallBitVector &
Used) {
6901 for (
unsigned I = 0, N = TemplateArgs.
size(); I != N; ++I)
6910 llvm::SmallBitVector &Deduced) {
6914 Deduced.resize(TemplateParams->
size());
6917 for (
unsigned I = 0, N =
Function->getNumParams(); I != N; ++I)
6919 true, TemplateParams->
getDepth(), Deduced);
6930 llvm::SmallBitVector Deduced(TemplateParams->
size());
6934 return Deduced.any();
Defines the clang::ASTContext interface.
This file provides some common utility functions for processing Lambda related AST Constructs.
Provides definitions for the various language-specific address spaces.
static Decl::Kind getKind(const Decl *D)
Defines the C++ Decl subclasses, other than those for templates (found in DeclTemplate....
Defines the C++ template declaration subclasses.
Defines the ExceptionSpecificationType enumeration and various utility functions.
Defines the clang::Expr interface and subclasses for C++ expressions.
llvm::DenseSet< const void * > Visited
Forward-declares and imports various common LLVM datatypes that clang wants to use unqualified.
Defines the clang::LangOptions interface.
Implements a partial diagnostic that can be emitted anwyhere in a DiagnosticBuilder stream.
static QualType getUnderlyingType(const SubRegion *R)
static bool isSameTemplateArg(ASTContext &Context, TemplateArgument X, const TemplateArgument &Y, bool PartialOrdering, bool PackExpansionMatchesPack=false)
Determine whether two template arguments are the same.
static bool isAtLeastAsSpecializedAs(Sema &S, SourceLocation Loc, const FunctionTemplateDecl *FT1, const FunctionTemplateDecl *FT2, TemplatePartialOrderingContext TPOC, bool Reversed, const SmallVector< QualType > &Args1, const SmallVector< QualType > &Args2)
Determine whether the function template FT1 is at least as specialized as FT2.
static bool hasSameExtendedValue(llvm::APSInt X, llvm::APSInt Y)
Compare two APSInts, extending and switching the sign as necessary to compare their values regardless...
static TemplateLikeDecl * getMoreSpecialized(Sema &S, QualType T1, QualType T2, TemplateLikeDecl *P1, PrimaryDel *P2, TemplateDeductionInfo &Info)
Returns the more specialized template specialization between T1/P1 and T2/P2.
static DeducedTemplateArgument checkDeducedTemplateArguments(ASTContext &Context, const DeducedTemplateArgument &X, const DeducedTemplateArgument &Y, bool AggregateCandidateDeduction=false)
Verify that the given, deduced template arguments are compatible.
static bool isSameDeclaration(Decl *X, Decl *Y)
Determine whether two declaration pointers refer to the same declaration.
static CXXRecordDecl * getCanonicalRD(QualType T)
static bool hasTemplateArgumentForDeduction(ArrayRef< TemplateArgument > &Args, unsigned &ArgIdx)
Determine whether there is a template argument to be used for deduction.
static DeclContext * getAsDeclContextOrEnclosing(Decl *D)
static bool hasInconsistentOrSupersetQualifiersOf(QualType ParamType, QualType ArgType)
Determine whether the parameter has qualifiers that the argument lacks.
static void MarkUsedTemplateParameters(ASTContext &Ctx, const TemplateArgument &TemplateArg, bool OnlyDeduced, unsigned Depth, llvm::SmallBitVector &Used)
Mark the template parameters that are used by this template argument.
static QualType GetTypeOfFunction(Sema &S, const OverloadExpr::FindResult &R, FunctionDecl *Fn)
Gets the type of a function for template-argument-deducton purposes when it's considered as part of a...
static TemplateDeductionResult CheckDeducedArgumentConstraints(Sema &S, TemplateDeclT *Template, ArrayRef< TemplateArgument > SugaredDeducedArgs, ArrayRef< TemplateArgument > CanonicalDeducedArgs, TemplateDeductionInfo &Info)
static TemplateDeductionResult DeduceTemplateBases(Sema &S, const CXXRecordDecl *RD, TemplateParameterList *TemplateParams, QualType P, TemplateDeductionInfo &Info, SmallVectorImpl< DeducedTemplateArgument > &Deduced)
Attempt to deduce the template arguments by checking the base types according to (C++20 [temp....
static const NonTypeTemplateParmDecl * getDeducedParameterFromExpr(const Expr *E, unsigned Depth)
If the given expression is of a form that permits the deduction of a non-type template parameter,...
static TemplateDeductionResult DeduceTemplateSpecArguments(Sema &S, TemplateParameterList *TemplateParams, const QualType P, QualType A, TemplateDeductionInfo &Info, SmallVectorImpl< DeducedTemplateArgument > &Deduced)
Deduce the template arguments by comparing the template parameter type (which is a template-id) with ...
static bool hasPackExpansionBeforeEnd(ArrayRef< TemplateArgument > Args)
Determine whether the given set of template arguments has a pack expansion that is not the last templ...
static bool isSimpleTemplateIdType(QualType T)
Determine whether the given type T is a simple-template-id type.
static bool ConvertDeducedTemplateArgument(Sema &S, NamedDecl *Param, DeducedTemplateArgument Arg, NamedDecl *Template, TemplateDeductionInfo &Info, bool IsDeduced, SmallVectorImpl< TemplateArgument > &SugaredOutput, SmallVectorImpl< TemplateArgument > &CanonicalOutput)
Convert the given deduced template argument and add it to the set of fully-converted template argumen...
static TemplateParameter makeTemplateParameter(Decl *D)
Helper function to build a TemplateParameter when we don't know its type statically.
static TemplateDeductionResult CheckOriginalCallArgDeduction(Sema &S, TemplateDeductionInfo &Info, Sema::OriginalCallArg OriginalArg, QualType DeducedA)
Check whether the deduced argument type for a call to a function template matches the actual argument...
static TemplateDeductionResult DeduceNullPtrTemplateArgument(Sema &S, TemplateParameterList *TemplateParams, const NonTypeTemplateParmDecl *NTTP, QualType NullPtrType, TemplateDeductionInfo &Info, SmallVectorImpl< DeducedTemplateArgument > &Deduced)
Deduce the value of the given non-type template parameter from the given null pointer template argume...
static unsigned getPackIndexForParam(Sema &S, FunctionTemplateDecl *FunctionTemplate, const MultiLevelTemplateArgumentList &Args, unsigned ParamIdx)
Find the pack index for a particular parameter index in an instantiation of a function template with ...
static TemplateDeductionResult DeduceTemplateArguments(Sema &S, TemplateParameterList *TemplateParams, ArrayRef< TemplateArgument > Ps, ArrayRef< TemplateArgument > As, TemplateDeductionInfo &Info, SmallVectorImpl< DeducedTemplateArgument > &Deduced, bool NumberOfArgumentsMustMatch, PackFold PackFold=PackFold::ParameterToArgument)
static bool AdjustFunctionParmAndArgTypesForDeduction(Sema &S, TemplateParameterList *TemplateParams, unsigned FirstInnerIndex, QualType &ParamType, QualType &ArgType, Expr::Classification ArgClassification, Expr *Arg, unsigned &TDF, TemplateSpecCandidateSet *FailedTSC=nullptr)
Perform the adjustments to the parameter and argument types described in C++ [temp....
static TemplateDeductionResult DeduceTemplateArgumentsFromCallArgument(Sema &S, TemplateParameterList *TemplateParams, unsigned FirstInnerIndex, QualType ParamType, QualType ArgType, Expr::Classification ArgClassification, Expr *Arg, TemplateDeductionInfo &Info, SmallVectorImpl< DeducedTemplateArgument > &Deduced, SmallVectorImpl< Sema::OriginalCallArg > &OriginalCallArgs, bool DecomposedParam, unsigned ArgIdx, unsigned TDF, TemplateSpecCandidateSet *FailedTSC=nullptr)
Perform template argument deduction per [temp.deduct.call] for a single parameter / argument pair.
static QualType GetImplicitObjectParameterType(ASTContext &Context, const CXXMethodDecl *Method, QualType RawType, bool IsOtherRvr)
static TemplateDeductionResult DeduceFromInitializerList(Sema &S, TemplateParameterList *TemplateParams, QualType AdjustedParamType, InitListExpr *ILE, TemplateDeductionInfo &Info, SmallVectorImpl< DeducedTemplateArgument > &Deduced, SmallVectorImpl< Sema::OriginalCallArg > &OriginalCallArgs, unsigned ArgIdx, unsigned TDF)
Attempt template argument deduction from an initializer list deemed to be an argument in a function c...
static bool isSameTemplate(TemplateDecl *T1, TemplateDecl *T2)
Determine if the two templates are equivalent.
static unsigned getFirstInnerIndex(FunctionTemplateDecl *FTD)
Get the index of the first template parameter that was originally from the innermost template-paramet...
static TemplateDeductionResult DeduceTemplateArgumentsByTypeMatch(Sema &S, TemplateParameterList *TemplateParams, QualType Param, QualType Arg, TemplateDeductionInfo &Info, SmallVectorImpl< DeducedTemplateArgument > &Deduced, unsigned TDF, bool PartialOrdering=false, bool DeducedFromArrayBound=false)
Deduce the template arguments by comparing the parameter type and the argument type (C++ [temp....
static TemplateDeductionResult DeduceNonTypeTemplateArgument(Sema &S, TemplateParameterList *TemplateParams, const NonTypeTemplateParmDecl *NTTP, const DeducedTemplateArgument &NewDeduced, QualType ValueType, TemplateDeductionInfo &Info, SmallVectorImpl< DeducedTemplateArgument > &Deduced)
Deduce the value of the given non-type template parameter as the given deduced template argument.
static TemplateDeductionResult ConvertDeducedTemplateArguments(Sema &S, TemplateDeclT *Template, bool IsDeduced, SmallVectorImpl< DeducedTemplateArgument > &Deduced, TemplateDeductionInfo &Info, SmallVectorImpl< TemplateArgument > &SugaredBuilder, SmallVectorImpl< TemplateArgument > &CanonicalBuilder, LocalInstantiationScope *CurrentInstantiationScope=nullptr, unsigned NumAlreadyConverted=0, bool PartialOverloading=false)
static bool DeducedArgsNeedReplacement(TemplateDeclT *Template)
static QualType ResolveOverloadForDeduction(Sema &S, TemplateParameterList *TemplateParams, Expr *Arg, QualType ParamType, bool ParamWasReference, TemplateSpecCandidateSet *FailedTSC=nullptr)
Apply the deduction rules for overload sets.
static bool IsPossiblyOpaquelyQualifiedType(QualType T)
Determines whether the given type is an opaque type that might be more qualified when instantiated.
static std::enable_if_t< IsPartialSpecialization< T >::value, TemplateDeductionResult > FinishTemplateArgumentDeduction(Sema &S, T *Partial, bool IsPartialOrdering, ArrayRef< TemplateArgument > TemplateArgs, SmallVectorImpl< DeducedTemplateArgument > &Deduced, TemplateDeductionInfo &Info)
Complete template argument deduction for a partial specialization.
static TemplateDeductionResult instantiateExplicitSpecifierDeferred(Sema &S, FunctionDecl *Specialization, const MultiLevelTemplateArgumentList &SubstArgs, TemplateDeductionInfo &Info, FunctionTemplateDecl *FunctionTemplate, ArrayRef< TemplateArgument > DeducedArgs)
static bool CheckDeducedPlaceholderConstraints(Sema &S, const AutoType &Type, AutoTypeLoc TypeLoc, QualType Deduced)
static bool IsPossiblyOpaquelyQualifiedTypeInternal(const Type *T)
static bool hasDeducibleTemplateParameters(Sema &S, FunctionTemplateDecl *FunctionTemplate, QualType T)
static NamedDecl * getTemplateParameterWithDefault(Sema &S, NamedDecl *A, TemplateArgument Default)
Create a shallow copy of a given template parameter declaration, with empty source locations and usin...
static bool isForwardingReference(QualType Param, unsigned FirstInnerIndex)
Determine whether a type denotes a forwarding reference.
bool DeducedArgsNeedReplacement< VarTemplatePartialSpecializationDecl >(VarTemplatePartialSpecializationDecl *Spec)
bool DeducedArgsNeedReplacement< ClassTemplatePartialSpecializationDecl >(ClassTemplatePartialSpecializationDecl *Spec)
Defines the clang::SourceLocation class and associated facilities.
Defines various enumerations that describe declaration and type specifiers.
Defines the clang::TypeLoc interface and its subclasses.
C Language Family Type Representation.
Holds long-lived AST nodes (such as types and decls) that can be referred to throughout the semantic ...
const ConstantArrayType * getAsConstantArrayType(QualType T) const
QualType getRValueReferenceType(QualType T) const
Return the uniqued reference to the type for an rvalue reference to the specified type.
unsigned getIntWidth(QualType T) const
QualType getBlockPointerType(QualType T) const
Return the uniqued reference to the type for a block of the specified type.
TemplateArgument getCanonicalTemplateArgument(const TemplateArgument &Arg) const
Retrieve the "canonical" template argument.
QualType getMemberPointerType(QualType T, const Type *Cls) const
Return the uniqued reference to the type for a member pointer to the specified type in the specified ...
TemplateName getCanonicalTemplateName(const TemplateName &Name) const
Retrieves the "canonical" template name that refers to a given template.
QualType getTemplateSpecializationType(TemplateName T, ArrayRef< TemplateArgument > Args, QualType Canon=QualType()) const
CanQualType getCanonicalType(QualType T) const
Return the canonical (structural) type corresponding to the specified potentially non-canonical type ...
bool hasSameType(QualType T1, QualType T2) const
Determine whether the given types T1 and T2 are equivalent.
void getInjectedTemplateArgs(const TemplateParameterList *Params, SmallVectorImpl< TemplateArgument > &Args)
Get a template argument list with one argument per template parameter in a template parameter list,...
QualType getPointerType(QualType T) const
Return the uniqued reference to the type for a pointer to the specified type.
const IncompleteArrayType * getAsIncompleteArrayType(QualType T) const
bool hasSameFunctionTypeIgnoringExceptionSpec(QualType T, QualType U) const
Determine whether two function types are the same, ignoring exception specifications in cases where t...
QualType getLValueReferenceType(QualType T, bool SpelledAsLValue=true) const
Return the uniqued reference to the type for an lvalue reference to the specified type.
QualType getTypeDeclType(const TypeDecl *Decl, const TypeDecl *PrevDecl=nullptr) const
Return the unique reference to the type for the specified type declaration.
const LangOptions & getLangOpts() const
TemplateArgument getInjectedTemplateArg(NamedDecl *ParamDecl)
QualType getDecayedType(QualType T) const
Return the uniqued reference to the decayed version of the given type.
QualType getFunctionTypeWithExceptionSpec(QualType Orig, const FunctionProtoType::ExceptionSpecInfo &ESI) const
Get a function type and produce the equivalent function type with the specified exception specificati...
bool hasSameTemplateName(const TemplateName &X, const TemplateName &Y) const
Determine whether the given template names refer to the same template.
TypeSourceInfo * getTrivialTypeSourceInfo(QualType T, SourceLocation Loc=SourceLocation()) const
Allocate a TypeSourceInfo where all locations have been initialized to a given location,...
CanQualType getSizeType() const
Return the unique type for "size_t" (C99 7.17), defined in <stddef.h>.
QualType removeAddrSpaceQualType(QualType T) const
Remove any existing address space on the type and returns the type with qualifiers intact (or that's ...
QualType getQualifiedType(SplitQualType split) const
Un-split a SplitQualType.
QualType getUnqualifiedArrayType(QualType T, Qualifiers &Quals)
Return this type as a completely-unqualified array type, capturing the qualifiers in Quals.
LangAS getDefaultOpenCLPointeeAddrSpace()
Returns default address space based on OpenCL version and enabled features.
bool hasSameUnqualifiedType(QualType T1, QualType T2) const
Determine whether the given types are equivalent after cvr-qualifiers have been removed.
const ArrayType * getAsArrayType(QualType T) const
Type Query functions.
uint64_t getTypeSize(QualType T) const
Return the size of the specified (complete) type T, in bits.
CanQualType UnsignedIntTy
QualType getCommonSugaredType(QualType X, QualType Y, bool Unqualified=false)
QualType getArrayDecayedType(QualType T) const
Return the properly qualified result of decaying the specified array type to a pointer.
QualType getFunctionType(QualType ResultTy, ArrayRef< QualType > Args, const FunctionProtoType::ExtProtoInfo &EPI) const
Return a normal function type with a typed argument list.
QualType getAdjustedParameterType(QualType T) const
Perform adjustment on the parameter type of a function.
QualType getAddrSpaceQualType(QualType T, LangAS AddressSpace) const
Return the uniqued reference to the type for an address space qualified type with the specified type ...
void adjustDeducedFunctionResultType(FunctionDecl *FD, QualType ResultType)
Change the result type of a function type once it is deduced.
const DependentSizedArrayType * getAsDependentSizedArrayType(QualType T) const
The result of parsing/analyzing an expression, statement etc.
Represents a C++11 auto or C++14 decltype(auto) type, possibly constrained by a type-constraint.
ArrayRef< TemplateArgument > getTypeConstraintArguments() const
bool isDecltypeAuto() const
ConceptDecl * getTypeConstraintConcept() const
AutoTypeKeyword getKeyword() const
bool isConstrained() const
A fixed int type of a specified bitwidth.
Represents a C++ conversion function within a class.
QualType getConversionType() const
Returns the type that this conversion function is converting to.
Represents a static or instance method of a struct/union/class.
bool isExplicitObjectMemberFunction() const
[C++2b][dcl.fct]/p7 An explicit object member function is a non-static member function with an explic...
RefQualifierKind getRefQualifier() const
Retrieve the ref-qualifier associated with this method.
Qualifiers getMethodQualifiers() const
The null pointer literal (C++11 [lex.nullptr])
Represents a C++ struct/union/class.
CXXMethodDecl * getLambdaCallOperator() const
Retrieve the lambda call operator of the closure type if this is a closure type.
Declaration of a class template.
QualType getInjectedClassNameSpecialization()
Retrieve the template specialization type of the injected-class-name for this class template.
QualType getInjectedSpecializationType() const
Retrieves the injected specialization type for this partial specialization.
ClassTemplateDecl * getSpecializedTemplate() const
Retrieve the template that this specialization specializes.
bool isClassScopeExplicitSpecialization() const
Is this an explicit specialization at class scope (within the class that owns the primary template)?...
Complex values, per C99 6.2.5p11.
Declaration of a C++20 concept.
const TypeClass * getTypePtr() const
Represents a concrete matrix type with constant number of rows and columns.
unsigned getNumColumns() const
Returns the number of columns in the matrix.
unsigned getNumRows() const
Returns the number of rows in the matrix.
The result of a constraint satisfaction check, containing the necessary information to diagnose an un...
A POD class for pairing a NamedDecl* with an access specifier.
DeclContext - This is used only as base class of specific decl types that can act as declaration cont...
DeclContext * getParent()
getParent - Returns the containing DeclContext.
A reference to a declared variable, function, enum, etc.
Decl - This represents one declaration (or definition), e.g.
TemplateDecl * getDescribedTemplate() const
If this is a declaration that describes some template, this method returns that template declaration.
FriendObjectKind getFriendObjectKind() const
Determines whether this declaration is the object of a friend declaration and, if so,...
bool isParameterPack() const
Whether this declaration is a parameter pack.
@ FOK_None
Not a friend object.
bool isInvalidDecl() const
SourceLocation getLocation() const
bool isTemplateParameterPack() const
isTemplateParameter - Determines whether this declaration is a template parameter pack.
DeclContext * getDeclContext()
DeclContext * getLexicalDeclContext()
getLexicalDeclContext - The declaration context where this Decl was lexically declared (LexicalDC).
virtual Decl * getCanonicalDecl()
Retrieves the "canonical" declaration of the given declaration.
virtual SourceRange getSourceRange() const LLVM_READONLY
Source range that this declaration covers.
Captures a template argument whose value has been deduced via c++ template argument deduction.
void setDeducedFromArrayBound(bool Deduced)
Specify whether the given non-type template argument was deduced from an array bound.
bool wasDeducedFromArrayBound() const
For a non-type template argument, determine whether the template argument was deduced from an array b...
TemplateName getTemplateName() const
Retrieve the name of the template that we are deducing.
Common base class for placeholders for types that get replaced by placeholder type deduction: C++11 a...
Represents an extended address space qualifier where the input address space value is dependent.
Expr * getAddrSpaceExpr() const
QualType getPointeeType() const
Represents an extended vector type where either the type or size is dependent.
Expr * getSizeExpr() const
QualType getElementType() const
Represents a matrix type where the type and the number of rows and columns is dependent on a template...
Expr * getColumnExpr() const
Expr * getRowExpr() const
Represents a dependent template name that cannot be resolved prior to template instantiation.
Represents a template specialization type whose template cannot be resolved, e.g.
ArrayRef< TemplateArgument > template_arguments() const
NestedNameSpecifier * getQualifier() const
Represents a vector type where either the type or size is dependent.
RAII object that enters a new expression evaluation context.
Store information needed for an explicit specifier.
bool isInvalid() const
Determine if the explicit specifier is invalid.
const Expr * getExpr() const
The return type of classify().
This represents one expression.
bool isValueDependent() const
Determines whether the value of this expression depends on.
SourceLocation getExprLoc() const LLVM_READONLY
getExprLoc - Return the preferred location for the arrow when diagnosing a problem with a generic exp...
std::optional< llvm::APSInt > getIntegerConstantExpr(const ASTContext &Ctx, SourceLocation *Loc=nullptr) const
isIntegerConstantExpr - Return the value if this expression is a valid integer constant expression.
ExtVectorType - Extended vector type.
Stores a list of template parameters and the associated requires-clause (if any) for a TemplateDecl a...
Represents a function declaration or definition.
const ParmVarDecl * getParamDecl(unsigned i) const
FunctionTemplateDecl * getDescribedFunctionTemplate() const
Retrieves the function template that is described by this function declaration.
QualType getReturnType() const
ArrayRef< ParmVarDecl * > parameters() const
FunctionDecl * getTemplateInstantiationPattern(bool ForDefinition=true) const
Retrieve the function declaration from which this function could be instantiated, if it is an instant...
const TemplateArgumentList * getTemplateSpecializationArgs() const
Retrieve the template arguments used to produce this function template specialization from the primar...
bool isImmediateEscalating() const
void getAssociatedConstraints(SmallVectorImpl< const Expr * > &AC) const
Get the associated-constraints of this function declaration.
FunctionDecl * getInstantiatedFromMemberFunction() const
If this function is an instantiation of a member function of a class template specialization,...
size_t param_size() const
bool isDefined(const FunctionDecl *&Definition, bool CheckForPendingFriendDefinition=false) const
Returns true if the function has a definition that does not need to be instantiated.
Represents a prototype with parameter type info, e.g.
param_type_iterator param_type_begin() const
const ExtParameterInfo * getExtParameterInfosOrNull() const
Return a pointer to the beginning of the array of extra parameter information, if present,...
unsigned getNumParams() const
bool hasTrailingReturn() const
Whether this function prototype has a trailing return type.
QualType getParamType(unsigned i) const
bool hasExceptionSpec() const
Return whether this function has any kind of exception spec.
ExtProtoInfo getExtProtoInfo() const
Expr * getNoexceptExpr() const
Return the expression inside noexcept(expression), or a null pointer if there is none (because the ex...
param_type_iterator param_type_end() const
ArrayRef< QualType > getParamTypes() const
Declaration of a template function.
FunctionDecl * getTemplatedDecl() const
Get the underlying function declaration of the template.
FunctionType - C99 6.7.5.3 - Function Declarators.
QualType getReturnType() const
const TypeClass * getTypePtr() const
Describes an C or C++ initializer list.
unsigned getNumInits() const
ArrayRef< Expr * > inits()
The injected class name of a C++ class template or class template partial specialization.
An lvalue reference type, per C++11 [dcl.ref].
A C++ lambda expression, which produces a function object (of unspecified type) that can be invoked l...
A stack-allocated class that identifies which local variable declaration instantiations are present i...
void SetPartiallySubstitutedPack(NamedDecl *Pack, const TemplateArgument *ExplicitArgs, unsigned NumExplicitArgs)
Note that the given parameter pack has been partially substituted via explicit specification of templ...
Represents a matrix type, as defined in the Matrix Types clang extensions.
QualType getElementType() const
Returns type of the elements being stored in the matrix.
A pointer to member type per C++ 8.3.3 - Pointers to members.
QualType getPointeeType() const
const Type * getClass() const
Data structure that captures multiple levels of template argument lists for use in template instantia...
void replaceInnermostTemplateArguments(Decl *AssociatedDecl, ArgList Args)
Replaces the current 'innermost' level with the provided argument list.
This represents a decl that may have a name.
NamedDecl * getUnderlyingDecl()
Looks through UsingDecls and ObjCCompatibleAliasDecls for the underlying named decl.
DeclarationName getDeclName() const
Get the actual, stored name of the declaration, which may be a special name.
Class that aids in the construction of nested-name-specifiers along with source-location information ...
Represents a C++ nested name specifier, such as "\::std::vector<int>::".
NestedNameSpecifier * getPrefix() const
Return the prefix of this nested name specifier.
const Type * getAsType() const
Retrieve the type stored in this nested name specifier.
NonTypeTemplateParmDecl - Declares a non-type template parameter, e.g., "Size" in.
bool isExpandedParameterPack() const
Whether this parameter is a non-type template parameter pack that has a known list of different types...
static NonTypeTemplateParmDecl * Create(const ASTContext &C, DeclContext *DC, SourceLocation StartLoc, SourceLocation IdLoc, unsigned D, unsigned P, const IdentifierInfo *Id, QualType T, bool ParameterPack, TypeSourceInfo *TInfo)
unsigned getIndex() const
Get the index of the template parameter within its parameter list.
unsigned getDepth() const
Get the nesting depth of the template parameter.
Represents a pointer to an Objective C object.
A reference to an overloaded function set, either an UnresolvedLookupExpr or an UnresolvedMemberExpr.
bool hasExplicitTemplateArgs() const
Determines whether this expression had explicit template arguments.
static FindResult find(Expr *E)
Finds the overloaded expression in the given expression E of OverloadTy.
SourceLocation getNameLoc() const
Gets the location of the name.
decls_iterator decls_begin() const
void copyTemplateArgumentsInto(TemplateArgumentListInfo &List) const
Copies the template arguments into the given structure.
decls_iterator decls_end() const
Represents a C++11 pack expansion that produces a sequence of expressions.
Represents a pack expansion of types.
QualType getPattern() const
Retrieve the pattern of this pack expansion, which is the type that will be repeatedly instantiated w...
std::optional< unsigned > getNumExpansions() const
Retrieve the number of expansions that this pack expansion will generate, if known.
bool hasSelectedType() const
QualType getSelectedType() const
A single parameter index whose accessors require each use to make explicit the parameter index encodi...
PointerType - C99 6.7.5.1 - Pointer Declarators.
QualType getPointeeType() const
A (possibly-)qualified type.
bool hasQualifiers() const
Determine whether this type has any qualifiers.
bool isNull() const
Return true if this QualType doesn't point to a type yet.
const Type * getTypePtr() const
Retrieves a pointer to the underlying (unqualified) type.
LangAS getAddressSpace() const
Return the address space of this type.
Qualifiers getQualifiers() const
Retrieve the set of qualifiers applied to this type.
QualType getNonReferenceType() const
If Type is a reference type (e.g., const int&), returns the type that the reference refers to ("const...
QualType getCanonicalType() const
QualType getUnqualifiedType() const
Retrieve the unqualified variant of the given type, removing as little sugar as possible.
bool hasAddressSpace() const
Check if this type has any address space qualifier.
unsigned getCVRQualifiers() const
Retrieve the set of CVR (const-volatile-restrict) qualifiers applied to this type.
Represents a template name that was expressed as a qualified name.
The collection of all-type qualifiers we support.
unsigned getCVRQualifiers() const
void removeCVRQualifiers(unsigned mask)
@ OCL_Strong
Assigning into this object requires the old value to be released and the new value to be retained.
@ OCL_ExplicitNone
This object can be modified without requiring retains or releases.
@ OCL_None
There is no lifetime qualification on this type.
void removeObjCLifetime()
bool isStrictSupersetOf(Qualifiers Other) const
Determine whether this set of qualifiers is a strict superset of another set of qualifiers,...
bool hasNonTrivialObjCLifetime() const
True if the lifetime is neither None or ExplicitNone.
bool hasAddressSpace() const
void removeAddressSpace()
bool hasObjCGCAttr() const
void setCVRQualifiers(unsigned mask)
bool hasObjCLifetime() const
ObjCLifetime getObjCLifetime() const
Qualifiers withoutObjCLifetime() const
bool compatiblyIncludes(Qualifiers other) const
Determines if these qualifiers compatibly include another set.
LangAS getAddressSpace() const
void setObjCLifetime(ObjCLifetime type)
An rvalue reference type, per C++11 [dcl.ref].
A helper class that allows the use of isa/cast/dyncast to detect TagType objects of structs/unions/cl...
RecordDecl * getDecl() const
A class that does preorder or postorder depth-first traversal on the entire Clang AST and visits each...
bool TraverseTemplateName(TemplateName Template)
Recursively visit a template name and dispatch to the appropriate method.
ArrayRef< TemplateArgument > getInjectedTemplateArgs()
Retrieve the "injected" template arguments that correspond to the template parameters of this templat...
Base for LValueReferenceType and RValueReferenceType.
QualType getPointeeType() const
Scope - A scope is a transient data structure that is used while parsing the program.
SemaDiagnosticBuilder Diag(SourceLocation Loc, unsigned DiagID, bool DeferHint=false)
Emit a diagnostic.
RAII object used to change the argument pack substitution index within a Sema object.
RAII object used to temporarily allow the C++ 'this' expression to be used, with the given qualifiers...
A helper class for building up ExtParameterInfos.
const FunctionProtoType::ExtParameterInfo * getPointerOrNull(unsigned numParams)
Return a pointer (suitable for setting in an ExtProtoInfo) to the ExtParameterInfo array we've built ...
RAII class used to determine whether SFINAE has trapped any errors that occur during template argumen...
bool hasErrorOccurred() const
Determine whether any SFINAE errors have been trapped.
Sema - This implements semantic analysis and AST building for C.
bool CheckInstantiatedFunctionTemplateConstraints(SourceLocation PointOfInstantiation, FunctionDecl *Decl, ArrayRef< TemplateArgument > TemplateArgs, ConstraintSatisfaction &Satisfaction)
QualType SubstAutoType(QualType TypeWithAuto, QualType Replacement)
Substitute Replacement for auto in TypeWithAuto.
LocalInstantiationScope * CurrentInstantiationScope
The current instantiation scope used to store local variables.
TemplateArgumentLoc getTrivialTemplateArgumentLoc(const TemplateArgument &Arg, QualType NTTPType, SourceLocation Loc, NamedDecl *TemplateParam=nullptr)
Allocate a TemplateArgumentLoc where all locations have been initialized to the given location.
TemplateDeductionResult DeduceTemplateArgumentsFromType(TemplateDecl *TD, QualType FromType, sema::TemplateDeductionInfo &Info)
Deduce the template arguments of the given template from FromType.
QualType ReplaceAutoType(QualType TypeWithAuto, QualType Replacement)
Completely replace the auto in TypeWithAuto by Replacement.
bool TemplateParameterListsAreEqual(const TemplateCompareNewDeclInfo &NewInstFrom, TemplateParameterList *New, const NamedDecl *OldInstFrom, TemplateParameterList *Old, bool Complain, TemplateParameterListEqualKind Kind, SourceLocation TemplateArgLoc=SourceLocation())
Determine whether the given template parameter lists are equivalent.
TemplateArgumentLoc SubstDefaultTemplateArgumentIfAvailable(TemplateDecl *Template, SourceLocation TemplateLoc, SourceLocation RAngleLoc, Decl *Param, ArrayRef< TemplateArgument > SugaredConverted, ArrayRef< TemplateArgument > CanonicalConverted, bool &HasDefaultArg)
If the given template parameter has a default template argument, substitute into that default templat...
ClassTemplatePartialSpecializationDecl * getMoreSpecializedPartialSpecialization(ClassTemplatePartialSpecializationDecl *PS1, ClassTemplatePartialSpecializationDecl *PS2, SourceLocation Loc)
Returns the more specialized class template partial specialization according to the rules of partial ...
FunctionDecl * getMoreConstrainedFunction(FunctionDecl *FD1, FunctionDecl *FD2)
Returns the more constrained function according to the rules of partial ordering by constraints (C++ ...
FunctionDecl * InstantiateFunctionDeclaration(FunctionTemplateDecl *FTD, const TemplateArgumentList *Args, SourceLocation Loc, CodeSynthesisContext::SynthesisKind CSC=CodeSynthesisContext::ExplicitTemplateArgumentSubstitution)
Instantiate (or find existing instantiation of) a function template with a given set of template argu...
QualType BuildStdInitializerList(QualType Element, SourceLocation Loc)
Looks for the std::initializer_list template and instantiates it with Element, or emits an error if i...
@ CTAK_DeducedFromArrayBound
The template argument was deduced from an array bound via template argument deduction.
@ CTAK_Specified
The template argument was specified in the code or was instantiated with some deduced template argume...
@ CTAK_Deduced
The template argument was deduced via template argument deduction.
bool DeduceReturnType(FunctionDecl *FD, SourceLocation Loc, bool Diagnose=true)
bool IsQualificationConversion(QualType FromType, QualType ToType, bool CStyle, bool &ObjCLifetimeConversion)
IsQualificationConversion - Determines whether the conversion from an rvalue of type FromType to ToTy...
QualType BuildFunctionType(QualType T, MutableArrayRef< QualType > ParamTypes, SourceLocation Loc, DeclarationName Entity, const FunctionProtoType::ExtProtoInfo &EPI)
Build a function type.
ExprResult BuildExpressionFromNonTypeTemplateArgument(const TemplateArgument &Arg, SourceLocation Loc)
ASTContext & getASTContext() const
UnresolvedSetIterator getMostSpecialized(UnresolvedSetIterator SBegin, UnresolvedSetIterator SEnd, TemplateSpecCandidateSet &FailedCandidates, SourceLocation Loc, const PartialDiagnostic &NoneDiag, const PartialDiagnostic &AmbigDiag, const PartialDiagnostic &CandidateDiag, bool Complain=true, QualType TargetType=QualType())
Retrieve the most specialized of the given function template specializations.
TypeSourceInfo * SubstType(TypeSourceInfo *T, const MultiLevelTemplateArgumentList &TemplateArgs, SourceLocation Loc, DeclarationName Entity, bool AllowDeducedTST=false)
Perform substitution on the type T with a given set of template arguments.
ExprResult ImpCastExprToType(Expr *E, QualType Type, CastKind CK, ExprValueKind VK=VK_PRValue, const CXXCastPath *BasePath=nullptr, CheckedConversionKind CCK=CheckedConversionKind::Implicit)
ImpCastExprToType - If Expr is not of type 'Type', insert an implicit cast.
FunctionDecl * ResolveSingleFunctionTemplateSpecialization(OverloadExpr *ovl, bool Complain=false, DeclAccessPair *Found=nullptr, TemplateSpecCandidateSet *FailedTSC=nullptr)
Given an expression that refers to an overloaded function, try to resolve that overloaded function ex...
PrintingPolicy getPrintingPolicy() const
Retrieve a suitable printing policy for diagnostics.
bool SubstTemplateArguments(ArrayRef< TemplateArgumentLoc > Args, const MultiLevelTemplateArgumentList &TemplateArgs, TemplateArgumentListInfo &Outputs)
bool isTemplateTemplateParameterAtLeastAsSpecializedAs(TemplateParameterList *PParam, TemplateDecl *AArg, SourceLocation Loc, bool IsDeduced)
@ TPL_TemplateParamsEquivalent
We are determining whether the template-parameters are equivalent according to C++ [temp....
bool isSameOrCompatibleFunctionType(QualType Param, QualType Arg)
Compare types for equality with respect to possibly compatible function types (noreturn adjustment,...
const LangOptions & getLangOpts() const
void collectUnexpandedParameterPacks(TemplateArgument Arg, SmallVectorImpl< UnexpandedParameterPack > &Unexpanded)
Collect the set of unexpanded parameter packs within the given template argument.
bool CheckConstraintSatisfaction(const NamedDecl *Template, ArrayRef< const Expr * > ConstraintExprs, const MultiLevelTemplateArgumentList &TemplateArgLists, SourceRange TemplateIDRange, ConstraintSatisfaction &Satisfaction)
Check whether the given list of constraint expressions are satisfied (as if in a 'conjunction') given...
bool CheckTemplateArgumentList(TemplateDecl *Template, SourceLocation TemplateLoc, TemplateArgumentListInfo &TemplateArgs, bool PartialTemplateArgs, SmallVectorImpl< TemplateArgument > &SugaredConverted, SmallVectorImpl< TemplateArgument > &CanonicalConverted, bool UpdateArgsWithConversions=true, bool *ConstraintsNotSatisfied=nullptr, bool PartialOrderingTTP=false)
Check that the given template arguments can be provided to the given template, converting the argumen...
FunctionTemplateDecl * getMoreSpecializedTemplate(FunctionTemplateDecl *FT1, FunctionTemplateDecl *FT2, SourceLocation Loc, TemplatePartialOrderingContext TPOC, unsigned NumCallArguments1, QualType RawObj1Ty={}, QualType RawObj2Ty={}, bool Reversed=false)
Returns the more specialized function template according to the rules of function template partial or...
std::optional< unsigned > getNumArgumentsInExpansion(QualType T, const MultiLevelTemplateArgumentList &TemplateArgs)
Determine the number of arguments in the given pack expansion type.
ExplicitSpecifier instantiateExplicitSpecifier(const MultiLevelTemplateArgumentList &TemplateArgs, ExplicitSpecifier ES)
TemplateDeductionResult SubstituteExplicitTemplateArguments(FunctionTemplateDecl *FunctionTemplate, TemplateArgumentListInfo &ExplicitTemplateArgs, SmallVectorImpl< DeducedTemplateArgument > &Deduced, SmallVectorImpl< QualType > &ParamTypes, QualType *FunctionType, sema::TemplateDeductionInfo &Info)
Substitute the explicitly-provided template arguments into the given function template according to C...
bool SubstParmTypes(SourceLocation Loc, ArrayRef< ParmVarDecl * > Params, const FunctionProtoType::ExtParameterInfo *ExtParamInfos, const MultiLevelTemplateArgumentList &TemplateArgs, SmallVectorImpl< QualType > &ParamTypes, SmallVectorImpl< ParmVarDecl * > *OutParams, ExtParameterInfoBuilder &ParamInfos)
Substitute the given template arguments into the given set of parameters, producing the set of parame...
void DiagnoseAutoDeductionFailure(VarDecl *VDecl, Expr *Init)
FunctionDecl * resolveAddressOfSingleOverloadCandidate(Expr *E, DeclAccessPair &FoundResult)
Given an expression that refers to an overloaded function, try to resolve that function to a single f...
DeclContext * CurContext
CurContext - This is the current declaration context of parsing.
SuppressedDiagnosticsMap SuppressedDiagnostics
QualType getDecltypeForExpr(Expr *E)
getDecltypeForExpr - Given an expr, will return the decltype for that expression, according to the ru...
ExprResult CheckPlaceholderExpr(Expr *E)
Check for operands with placeholder types and complain if found.
Decl * SubstDecl(Decl *D, DeclContext *Owner, const MultiLevelTemplateArgumentList &TemplateArgs)
TypeSourceInfo * SubstAutoTypeSourceInfoDependent(TypeSourceInfo *TypeWithAuto)
bool IsAtLeastAsConstrained(NamedDecl *D1, MutableArrayRef< const Expr * > AC1, NamedDecl *D2, MutableArrayRef< const Expr * > AC2, bool &Result)
Check whether the given declaration's associated constraints are at least as constrained than another...
TypeSourceInfo * ReplaceAutoTypeSourceInfo(TypeSourceInfo *TypeWithAuto, QualType Replacement)
bool isCompleteType(SourceLocation Loc, QualType T, CompleteTypeKind Kind=CompleteTypeKind::Default)
bool isStdInitializerList(QualType Ty, QualType *Element)
Tests whether Ty is an instance of std::initializer_list and, if it is and Element is not NULL,...
void InstantiateFunctionDefinition(SourceLocation PointOfInstantiation, FunctionDecl *Function, bool Recursive=false, bool DefinitionRequired=false, bool AtEndOfTU=false)
Instantiate the definition of the given function from its template.
void MarkUsedTemplateParameters(const Expr *E, bool OnlyDeduced, unsigned Depth, llvm::SmallBitVector &Used)
Mark which template parameters are used in a given expression.
@ Unevaluated
The current expression and its subexpressions occur within an unevaluated operand (C++11 [expr]p7),...
bool CheckTemplateArgument(NamedDecl *Param, TemplateArgumentLoc &Arg, NamedDecl *Template, SourceLocation TemplateLoc, SourceLocation RAngleLoc, unsigned ArgumentPackIndex, SmallVectorImpl< TemplateArgument > &SugaredConverted, SmallVectorImpl< TemplateArgument > &CanonicalConverted, CheckTemplateArgumentKind CTAK)
Check that the given template argument corresponds to the given template parameter.
QualType getLambdaConversionFunctionResultType(const FunctionProtoType *CallOpType, CallingConv CC)
Get the return type to use for a lambda's conversion function(s) to function pointer type,...
QualType getCompletedType(Expr *E)
Get the type of expression E, triggering instantiation to complete the type if necessary – that is,...
TypeSourceInfo * SubstAutoTypeSourceInfo(TypeSourceInfo *TypeWithAuto, QualType Replacement)
Substitute Replacement for auto in TypeWithAuto.
TemplateArgumentLoc getIdentityTemplateArgumentLoc(NamedDecl *Param, SourceLocation Location)
Get a template argument mapping the given template parameter to itself, e.g.
bool CheckIfFunctionSpecializationIsImmediate(FunctionDecl *FD, SourceLocation Loc)
QualType SubstAutoTypeDependent(QualType TypeWithAuto)
TemplateDeductionResult DeduceTemplateArguments(ClassTemplatePartialSpecializationDecl *Partial, ArrayRef< TemplateArgument > TemplateArgs, sema::TemplateDeductionInfo &Info)
TemplateDeductionResult FinishTemplateArgumentDeduction(FunctionTemplateDecl *FunctionTemplate, SmallVectorImpl< DeducedTemplateArgument > &Deduced, unsigned NumExplicitlySpecified, FunctionDecl *&Specialization, sema::TemplateDeductionInfo &Info, SmallVectorImpl< OriginalCallArg > const *OriginalCallArgs=nullptr, bool PartialOverloading=false, llvm::function_ref< bool()> CheckNonDependent=[] { return false;})
Finish template argument deduction for a function template, checking the deduced template arguments f...
void runWithSufficientStackSpace(SourceLocation Loc, llvm::function_ref< void()> Fn)
Run some code with "sufficient" stack space.
bool isMoreSpecializedThanPrimary(ClassTemplatePartialSpecializationDecl *T, sema::TemplateDeductionInfo &Info)
std::string getTemplateArgumentBindingsText(const TemplateParameterList *Params, const TemplateArgumentList &Args)
Produces a formatted string that describes the binding of template parameters to template arguments.
void DiagnoseUnsatisfiedConstraint(const ConstraintSatisfaction &Satisfaction, bool First=true)
Emit diagnostics explaining why a constraint expression was deemed unsatisfied.
void adjustMemberFunctionCC(QualType &T, bool HasThisPointer, bool IsCtorOrDtor, SourceLocation Loc)
Adjust the calling convention of a method to be the ABI default if it wasn't specified explicitly.
bool IsDerivedFrom(SourceLocation Loc, QualType Derived, QualType Base)
Determine whether the type Derived is a C++ class that is derived from the type Base.
@ Diagnose
Diagnose issues that are non-constant or that are extensions.
ExprResult BuildExpressionFromDeclTemplateArgument(const TemplateArgument &Arg, QualType ParamType, SourceLocation Loc, NamedDecl *TemplateParam=nullptr)
Given a non-type template argument that refers to a declaration and the type of its corresponding non...
TemplateDeductionResult DeduceAutoType(TypeLoc AutoTypeLoc, Expr *Initializer, QualType &Result, sema::TemplateDeductionInfo &Info, bool DependentDeduction=false, bool IgnoreConstraints=false, TemplateSpecCandidateSet *FailedTSC=nullptr)
Deduce the type for an auto type-specifier (C++11 [dcl.spec.auto]p6)
QualType adjustCCAndNoReturn(QualType ArgFunctionType, QualType FunctionType, bool AdjustExceptionSpec=false)
Adjust the type ArgFunctionType to match the calling convention, noreturn, and optionally the excepti...
void HandleFunctionTypeMismatch(PartialDiagnostic &PDiag, QualType FromType, QualType ToType)
HandleFunctionTypeMismatch - Gives diagnostic information for differeing function types.
bool IsFunctionConversion(QualType FromType, QualType ToType, QualType &ResultTy)
Determine whether the conversion from FromType to ToType is a valid conversion that strips "noexcept"...
MultiLevelTemplateArgumentList getTemplateInstantiationArgs(const NamedDecl *D, const DeclContext *DC=nullptr, bool Final=false, std::optional< ArrayRef< TemplateArgument > > Innermost=std::nullopt, bool RelativeToPrimary=false, const FunctionDecl *Pattern=nullptr, bool ForConstraintInstantiation=false, bool SkipForSpecialization=false)
Retrieve the template argument list(s) that should be used to instantiate the definition of the given...
void MarkDeducedTemplateParameters(const FunctionTemplateDecl *FunctionTemplate, llvm::SmallBitVector &Deduced)
Encodes a location in the source.
A trivial tuple used to represent a source range.
SourceLocation getEnd() const
void Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Context, bool Canonical, bool ProfileLambdaExpr=false) const
Produce a unique representation of the given statement.
Represents the result of substituting a set of types for a template type parameter pack.
TemplateArgument getArgumentPack() const
unsigned getIndex() const
Returns the index of the replaced parameter in the associated declaration.
const TemplateTypeParmDecl * getReplacedParameter() const
Gets the template parameter declaration that was substituted for.
TagDecl * getCanonicalDecl() override
Retrieves the "canonical" declaration of the given declaration.
A convenient class for passing around template argument information.
void addArgument(const TemplateArgumentLoc &Loc)
A template argument list.
static TemplateArgumentList * CreateCopy(ASTContext &Context, ArrayRef< TemplateArgument > Args)
Create a new template argument list that copies the given set of template arguments.
unsigned size() const
Retrieve the number of template arguments in this template argument list.
const TemplateArgument & get(unsigned Idx) const
Retrieve the template argument at a given index.
ArrayRef< TemplateArgument > asArray() const
Produce this as an array ref.
Location wrapper for a TemplateArgument.
const TemplateArgument & getArgument() const
Represents a template argument.
QualType getParamTypeForDecl() const
Expr * getAsExpr() const
Retrieve the template argument as an expression.
pack_iterator pack_end() const
Iterator referencing one past the last argument of a template argument pack.
pack_iterator pack_begin() const
Iterator referencing the first argument of a template argument pack.
QualType getNonTypeTemplateArgumentType() const
If this is a non-type template argument, get its type.
void Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Context) const
Used to insert TemplateArguments into FoldingSets.
QualType getAsType() const
Retrieve the type for a type template argument.
llvm::APSInt getAsIntegral() const
Retrieve the template argument as an integral value.
QualType getNullPtrType() const
Retrieve the type for null non-type template argument.
static TemplateArgument CreatePackCopy(ASTContext &Context, ArrayRef< TemplateArgument > Args)
Create a new template argument pack by copying the given set of template arguments.
TemplateName getAsTemplate() const
Retrieve the template name for a template name argument.
TemplateArgument getPackExpansionPattern() const
When the template argument is a pack expansion, returns the pattern of the pack expansion.
bool isNull() const
Determine whether this template argument has no value.
static TemplateArgument getEmptyPack()
unsigned pack_size() const
The number of template arguments in the given template argument pack.
bool structurallyEquals(const TemplateArgument &Other) const
Determines whether two template arguments are superficially the same.
ValueDecl * getAsDecl() const
Retrieve the declaration for a declaration non-type template argument.
ArrayRef< TemplateArgument > pack_elements() const
Iterator range referencing all of the elements of a template argument pack.
@ Declaration
The template argument is a declaration that was provided for a pointer, reference,...
@ Template
The template argument is a template name that was provided for a template template parameter.
@ StructuralValue
The template argument is a non-type template argument that can't be represented by the special-case D...
@ Pack
The template argument is actually a parameter pack.
@ TemplateExpansion
The template argument is a pack expansion of a template name that was provided for a template templat...
@ NullPtr
The template argument is a null pointer or null pointer to member that was provided for a non-type te...
@ Type
The template argument is a type.
@ Null
Represents an empty template argument, e.g., one that has not been deduced.
@ Integral
The template argument is an integral value stored in an llvm::APSInt that was provided for an integra...
@ Expression
The template argument is an expression, and we've not resolved it to one of the other forms yet,...
ArgKind getKind() const
Return the kind of stored template argument.
bool isPackExpansion() const
Determine whether this template argument is a pack expansion.
TemplateName getAsTemplateOrTemplatePattern() const
Retrieve the template argument as a template name; if the argument is a pack expansion,...
The base class of all kinds of template declarations (e.g., class, function, etc.).
SourceRange getSourceRange() const override LLVM_READONLY
Source range that this declaration covers.
void getAssociatedConstraints(llvm::SmallVectorImpl< const Expr * > &AC) const
Get the total constraint-expression associated with this template, including constraint-expressions d...
TemplateParameterList * getTemplateParameters() const
Get the list of template parameters.
Represents a C++ template name within the type system.
TemplateDecl * getAsTemplateDecl() const
Retrieve the underlying template declaration that this template name refers to, if known.
DependentTemplateName * getAsDependentTemplateName() const
Retrieve the underlying dependent template name structure, if any.
QualifiedTemplateName * getAsQualifiedTemplateName() const
Retrieve the underlying qualified template name structure, if any.
void * getAsVoidPointer() const
Retrieve the template name as a void pointer.
@ Template
A single template declaration.
Stores a list of template parameters for a TemplateDecl and its derived classes.
NamedDecl * getParam(unsigned Idx)
unsigned getDepth() const
Get the depth of this template parameter list in the set of template parameter lists.
Expr * getRequiresClause()
The constraint-expression of the associated requires-clause.
TemplateSpecCandidateSet - A set of generalized overload candidates, used in template specializations...
void NoteCandidates(Sema &S, SourceLocation Loc)
NoteCandidates - When no template specialization match is found, prints diagnostic messages containin...
Represents a type template specialization; the template must be a class template, a type alias templa...
ArrayRef< TemplateArgument > template_arguments() const
TemplateName getTemplateName() const
Retrieve the name of the template that we are specializing.
TemplateTemplateParmDecl - Declares a template template parameter, e.g., "T" in.
static TemplateTemplateParmDecl * Create(const ASTContext &C, DeclContext *DC, SourceLocation L, unsigned D, unsigned P, bool ParameterPack, IdentifierInfo *Id, bool Typename, TemplateParameterList *Params)
Declaration of a template type parameter.
static TemplateTypeParmDecl * Create(const ASTContext &C, DeclContext *DC, SourceLocation KeyLoc, SourceLocation NameLoc, unsigned D, unsigned P, IdentifierInfo *Id, bool Typename, bool ParameterPack, bool HasTypeConstraint=false, std::optional< unsigned > NumExpanded=std::nullopt)
unsigned getDepth() const
Retrieve the depth of the template parameter.
Wrapper for template type parameters.
unsigned getIndex() const
unsigned getDepth() const
const Type * getTypeForDecl() const
TyLocType push(QualType T)
Pushes space for a new TypeLoc of the given type.
void reserve(size_t Requested)
Ensures that this buffer has at least as much capacity as described.
Base wrapper for a particular "section" of type source info.
SourceRange getLocalSourceRange() const
Get the local source range.
unsigned getFullDataSize() const
Returns the size of the type source info data block.
void copy(TypeLoc other)
Copies the other type loc into this one.
A container of type source information.
SourceLocation getNameLoc() const
void setNameLoc(SourceLocation Loc)
The base class of the type hierarchy.
bool isIncompleteArrayType() const
bool isPlaceholderType() const
Test for a type which does not represent an actual type-system type but is instead used as a placehol...
bool isRValueReferenceType() const
bool canDecayToPointerType() const
Determines whether this type can decay to a pointer type.
bool isFunctionPointerType() const
bool isPointerType() const
const T * castAs() const
Member-template castAs<specific type>.
bool isReferenceType() const
QualType getPointeeType() const
If this is a pointer, ObjC object pointer, or block pointer, this returns the respective pointee.
AutoType * getContainedAutoType() const
Get the AutoType whose type will be deduced for a variable with an initializer of this type.
bool isLValueReferenceType() const
bool isDependentType() const
Whether this type is a dependent type, meaning that its definition somehow depends on a template para...
QualType getCanonicalTypeInternal() const
bool isMemberPointerType() const
bool isObjCLifetimeType() const
Returns true if objects of this type have lifetime semantics under ARC.
bool isUndeducedType() const
Determine whether this type is an undeduced type, meaning that it somehow involves a C++11 'auto' typ...
bool isFunctionType() const
bool isObjCObjectPointerType() const
bool isMemberFunctionPointerType() const
bool isAnyPointerType() const
TypeClass getTypeClass() const
bool isCanonicalUnqualified() const
Determines if this type would be canonical if it had no further qualification.
const T * getAs() const
Member-template getAs<specific type>'.
bool isRecordType() const
The iterator over UnresolvedSets.
Represent the declaration of a variable (in which case it is an lvalue) a function (in which case it ...
Represents a variable declaration or definition.
bool isInitCapture() const
Whether this variable is the implicit variable for a lambda init-capture.
Declaration of a variable template.
const TemplateArgumentList & getTemplateArgs() const
Retrieve the template arguments of the variable template specialization.
bool isClassScopeExplicitSpecialization() const
VarTemplateDecl * getSpecializedTemplate() const
Retrieve the template that this specialization specializes.
Represents a GCC generic vector type.
Provides information about an attempted template argument deduction, whose success or failure was des...
void setExplicitArgs(TemplateArgumentList *NewDeducedSugared, TemplateArgumentList *NewDeducedCanonical)
Provide an initial template argument list that contains the explicitly-specified arguments.
TemplateArgumentList * takeCanonical()
TemplateArgumentList * takeSugared()
Take ownership of the deduced template argument lists.
SourceLocation getLocation() const
Returns the location at which template argument is occurring.
void clearSFINAEDiagnostic()
Discard any SFINAE diagnostics.
TemplateArgument SecondArg
The second template argument to which the template argument deduction failure refers.
TemplateParameter Param
The template parameter to which a template argument deduction failure refers.
diag_iterator diag_end() const
Returns an iterator at the end of the sequence of suppressed diagnostics.
void reset(TemplateArgumentList *NewDeducedSugared, TemplateArgumentList *NewDeducedCanonical)
Provide a new template argument list that contains the results of template argument deduction.
unsigned getDeducedDepth() const
The depth of template parameters for which deduction is being performed.
diag_iterator diag_begin() const
Returns an iterator at the beginning of the sequence of suppressed diagnostics.
TemplateArgument FirstArg
The first template argument to which the template argument deduction failure refers.
ConstraintSatisfaction AssociatedConstraintsSatisfaction
The constraint satisfaction details resulting from the associated constraints satisfaction tests.
unsigned CallArgIndex
The index of the function argument that caused a deduction failure.
The JSON file list parser is used to communicate input to InstallAPI.
bool isTargetAddressSpace(LangAS AS)
@ Specialization
We are substituting template parameters for template arguments in order to form a template specializa...
@ RQ_None
No ref-qualifier was provided.
@ RQ_RValue
An rvalue ref-qualifier was provided (&&).
unsigned toTargetAddressSpace(LangAS AS)
@ Result
The result type of a method or function.
llvm::PointerUnion< TemplateTypeParmDecl *, NonTypeTemplateParmDecl *, TemplateTemplateParmDecl * > TemplateParameter
Stores a template parameter of any kind.
std::pair< unsigned, unsigned > getDepthAndIndex(NamedDecl *ND)
Retrieve the depth and index of a template parameter.
std::optional< unsigned > getExpandedPackSize(const NamedDecl *Param)
Check whether the template parameter is a pack expansion, and if so, determine the number of paramete...
bool isLambdaConversionOperator(CXXConversionDecl *C)
const FunctionProtoType * T
void printTemplateArgumentList(raw_ostream &OS, ArrayRef< TemplateArgument > Args, const PrintingPolicy &Policy, const TemplateParameterList *TPL=nullptr)
Print a template argument list, including the '<' and '>' enclosing the template arguments.
TPOC
The context in which partial ordering of function templates occurs.
@ TPOC_Conversion
Partial ordering of function templates for a call to a conversion function.
@ TPOC_Other
Partial ordering of function templates in other contexts, e.g., taking the address of a function temp...
@ TPOC_Call
Partial ordering of function templates for a function call.
TemplateDeductionResult
Describes the result of template argument deduction.
@ MiscellaneousDeductionFailure
Deduction failed; that's all we know.
@ NonDependentConversionFailure
Checking non-dependent argument conversions failed.
@ ConstraintsNotSatisfied
The deduced arguments did not satisfy the constraints associated with the template.
@ Underqualified
Template argument deduction failed due to inconsistent cv-qualifiers on a template parameter type tha...
@ InstantiationDepth
Template argument deduction exceeded the maximum template instantiation depth (which has already been...
@ InvalidExplicitArguments
The explicitly-specified template arguments were not valid template arguments for the given template.
@ TooFewArguments
When performing template argument deduction for a function template, there were too few call argument...
@ Incomplete
Template argument deduction did not deduce a value for every template parameter.
@ Invalid
The declaration was invalid; do nothing.
@ Success
Template argument deduction was successful.
@ SubstitutionFailure
Substitution of the deduced template argument values resulted in an error.
@ IncompletePack
Template argument deduction did not deduce a value for every expansion of an expanded template parame...
@ DeducedMismatch
After substituting deduced template arguments, a dependent parameter type did not match the correspon...
@ Inconsistent
Template argument deduction produced inconsistent deduced values for the given template parameter.
@ TooManyArguments
When performing template argument deduction for a function template, there were too many call argumen...
@ AlreadyDiagnosed
Some error which was already diagnosed.
@ DeducedMismatchNested
After substituting deduced template arguments, an element of a dependent parameter type did not match...
@ NonDeducedMismatch
A non-depnedent component of the parameter did not match the corresponding component of the argument.
CallingConv
CallingConv - Specifies the calling convention that a function uses.
@ EST_Uninstantiated
not instantiated yet
@ EST_None
no exception specification
TemplateDeductionFlags
Various flags that control template argument deduction.
@ TDF_None
No template argument deduction flags, which indicates the strictest results for template argument ded...
@ TDF_DerivedClass
Within template argument deduction from a function call, we are matching in a case where we can perfo...
@ TDF_TopLevelParameterTypeList
Whether we are performing template argument deduction for parameters and arguments in a top-level tem...
@ TDF_IgnoreQualifiers
Within template argument deduction from a function call, we are matching in a case where we ignore cv...
@ TDF_ParamWithReferenceType
Within template argument deduction from a function call, we are matching with a parameter type for wh...
@ TDF_SkipNonDependent
Allow non-dependent types to differ, e.g., when performing template argument deduction from a functio...
@ TDF_AllowCompatibleFunctionType
Within template argument deduction from overload resolution per C++ [over.over] allow matching functi...
@ TDF_ArgWithReferenceType
Within template argument deduction for a conversion function, we are matching with an argument type f...
ActionResult< CXXBaseSpecifier * > BaseResult
Represents an explicit template argument list in C++, e.g., the "<int>" in "sort<int>".
SourceLocation RAngleLoc
The source location of the right angle bracket ('>').
SourceLocation LAngleLoc
The source location of the left angle bracket ('<').
llvm::ArrayRef< TemplateArgumentLoc > arguments() const
A pack that we're currently deducing.
DeducedPack(unsigned Index)
SmallVector< DeducedTemplateArgument, 4 > New
DeducedTemplateArgument Saved
DeducedTemplateArgument DeferredDeduction
Holds information about the various types of exception specification.
ExceptionSpecificationType Type
The kind of exception specification this is.
Extra information about a function prototype.
const ExtParameterInfo * ExtParameterInfos
FunctionType::ExtInfo ExtInfo
bool HasFormOfMemberPointer
OverloadExpr * Expression
@ ExplicitTemplateArgumentSubstitution
We are substituting explicit template arguments provided for a function template.
@ DeducedTemplateArgumentSubstitution
We are substituting template argument determined as part of template argument deduction for either a ...
A stack object to be created when performing template instantiation.
bool isInvalid() const
Determines whether we have exceeded the maximum recursive template instantiations.
brief A function argument from which we performed template argument
QualType OriginalParamType
Location information for a TemplateArgument.