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);
524 T->getDepth(),
T->getIndex(),
T->getIdentifier(),
525 T->wasDeclaredWithTypename(),
T->isParameterPack(),
526 T->hasTypeConstraint());
527 R->setDefaultArgument(
530 if (R->hasTypeConstraint()) {
531 auto *
C = R->getTypeConstraint();
532 R->setTypeConstraint(
C->getConceptReference(),
533 C->getImmediatelyDeclaredConstraint());
537 case Decl::NonTypeTemplateParm: {
538 auto *
T = cast<NonTypeTemplateParmDecl>(A);
541 T->getDepth(),
T->getIndex(),
T->getIdentifier(),
T->getType(),
542 T->isParameterPack(),
T->getTypeSourceInfo());
543 R->setDefaultArgument(S.
Context,
547 if (
auto *PTC =
T->getPlaceholderTypeConstraint())
548 R->setPlaceholderTypeConstraint(PTC);
551 case Decl::TemplateTemplateParm: {
552 auto *
T = cast<TemplateTemplateParmDecl>(A);
555 T->getIndex(),
T->isParameterPack(),
T->getIdentifier(),
556 T->wasDeclaredWithTypename(),
T->getTemplateParameters());
557 R->setDefaultArgument(
563 llvm_unreachable(
"Unexpected Decl Kind");
577 return TemplateDeductionResult::Success;
580 if (
auto *TempParam = dyn_cast<TemplateTemplateParmDecl>(ParamDecl)) {
583 return TemplateDeductionResult::Success;
590 if (
auto *TempArg = dyn_cast_or_null<TemplateTemplateParmDecl>(
592 assert(!TempArg->isExpandedParameterPack());
595 if (DefaultArguments.size() != 0) {
596 assert(DefaultArguments.size() <= As->
size());
598 for (
unsigned I = 0; I < DefaultArguments.size(); ++I)
600 DefaultArguments[I]);
601 for (
unsigned I = DefaultArguments.size(); I < As->size(); ++I)
606 auto *TPL = TemplateParameterList::Create(
612 TempArg->getDepth(), TempArg->getPosition(),
613 TempArg->isParameterPack(), TempArg->getIdentifier(),
614 TempArg->wasDeclaredWithTypename(), TPL)));
619 Deduced[TempParam->getIndex()],
621 if (Result.isNull()) {
622 Info.
Param = TempParam;
623 Info.
FirstArg = Deduced[TempParam->getIndex()];
625 return TemplateDeductionResult::Inconsistent;
628 Deduced[TempParam->getIndex()] = Result;
629 return TemplateDeductionResult::Success;
634 return TemplateDeductionResult::Success;
639 return TemplateDeductionResult::NonDeducedMismatch;
665 assert(TST &&
"Expected a TemplateSpecializationType");
679 UP = IP->getInjectedSpecializationType();
687 return TemplateDeductionResult::Success;
694 ->template_arguments();
697 std::optional<NestedNameSpecifier *> NNS;
700 NNS = Elaborated->getQualifier();
702 UA = Injected->getInjectedSpecializationType();
713 return TemplateDeductionResult::Success;
720 ->template_arguments();
725 Result != TemplateDeductionResult::Success)
741 RA ? dyn_cast<ClassTemplateSpecializationDecl>(RA->getDecl()) :
nullptr;
745 return TemplateDeductionResult::NonDeducedMismatch;
751 *NNS,
false,
TemplateName(SA->getSpecializedTemplate()));
756 SA->getTemplateArgs().asArray(), Deduced);
757 Result != TemplateDeductionResult::Success)
762 SA->getTemplateArgs().asArray(), Info, Deduced,
770 case Type::TypeOfExpr:
772 case Type::DependentName:
774 case Type::PackIndexing:
775 case Type::UnresolvedUsing:
776 case Type::TemplateTypeParm:
780 case Type::ConstantArray:
781 case Type::IncompleteArray:
782 case Type::VariableArray:
783 case Type::DependentSizedArray:
785 cast<ArrayType>(
T)->getElementType().getTypePtr());
834class PackDeductionScope {
840 bool DeducePackIfNotAlreadyDeduced =
false)
841 : S(S), TemplateParams(TemplateParams), Deduced(Deduced), Info(Info),
842 DeducePackIfNotAlreadyDeduced(DeducePackIfNotAlreadyDeduced){
843 unsigned NumNamedPacks = addPacks(Pattern);
844 finishConstruction(NumNamedPacks);
851 : S(S), TemplateParams(TemplateParams), Deduced(Deduced), Info(Info) {
853 finishConstruction(1);
857 void addPack(
unsigned Index) {
860 DeducedFromEarlierParameter = !Deduced[Index].isNull();
862 Pack.Saved = Deduced[Index];
868 if (std::optional<unsigned> ExpandedPackExpansions =
870 FixedNumExpansions = ExpandedPackExpansions;
872 Packs.push_back(Pack);
878 llvm::SmallBitVector SawIndices(TemplateParams->size());
881 auto AddPack = [&](
unsigned Index) {
882 if (SawIndices[Index])
884 SawIndices[Index] =
true;
891 if (
auto *NTTP = dyn_cast<NonTypeTemplateParmDecl>(
892 TemplateParams->getParam(Index))) {
893 if (!NTTP->isExpandedParameterPack())
894 if (
auto *Expansion = dyn_cast<PackExpansionType>(NTTP->getType()))
895 ExtraDeductions.push_back(Expansion->getPattern());
904 for (
unsigned I = 0, N = Unexpanded.size(); I != N; ++I) {
905 unsigned Depth, Index;
907 if (Depth == Info.getDeducedDepth())
914 assert(!Packs.empty() &&
"Pack expansion without unexpanded packs?");
916 unsigned NumNamedPacks = Packs.size();
920 while (!ExtraDeductions.empty())
921 Collect(ExtraDeductions.pop_back_val());
923 return NumNamedPacks;
926 void finishConstruction(
unsigned NumNamedPacks) {
929 unsigned NumPartialPackArgs = 0;
930 std::pair<unsigned, unsigned> PartialPackDepthIndex(-1u, -1u);
932 if (
auto *Partial =
Scope->getPartiallySubstitutedPack(
933 &PartialPackArgs, &NumPartialPackArgs))
939 bool IsExpanded =
true;
940 for (
unsigned I = 0; I != NumNamedPacks; ++I) {
941 if (Packs[I].Index >= Info.getNumExplicitArgs()) {
943 IsPartiallyExpanded =
false;
946 if (PartialPackDepthIndex ==
947 std::make_pair(Info.getDeducedDepth(), Packs[I].Index)) {
948 IsPartiallyExpanded =
true;
954 if (IsPartiallyExpanded)
955 PackElements += NumPartialPackArgs;
957 PackElements += *FixedNumExpansions;
959 for (
auto &Pack : Packs) {
960 if (Info.PendingDeducedPacks.size() > Pack.Index)
961 Pack.Outer = Info.PendingDeducedPacks[Pack.Index];
963 Info.PendingDeducedPacks.resize(Pack.Index + 1);
964 Info.PendingDeducedPacks[Pack.Index] = &Pack;
966 if (PartialPackDepthIndex ==
967 std::make_pair(Info.getDeducedDepth(), Pack.Index)) {
968 Pack.New.append(PartialPackArgs, PartialPackArgs + NumPartialPackArgs);
977 if (!IsPartiallyExpanded)
978 Deduced[Pack.Index] = Pack.New[PackElements];
984 ~PackDeductionScope() {
985 for (
auto &Pack : Packs)
986 Info.PendingDeducedPacks[Pack.Index] = Pack.Outer;
990 std::optional<unsigned> getSavedPackSizeIfAllEqual()
const {
991 unsigned PackSize = Packs[0].Saved.pack_size();
993 if (std::all_of(Packs.begin() + 1, Packs.end(), [&PackSize](
const auto &
P) {
994 return P.Saved.pack_size() == PackSize;
1002 bool isDeducedFromEarlierParameter()
const {
1003 return DeducedFromEarlierParameter;
1008 bool isPartiallyExpanded() {
return IsPartiallyExpanded; }
1013 bool hasFixedArity() {
return FixedNumExpansions.has_value(); }
1018 bool hasNextElement() {
1019 return !FixedNumExpansions || *FixedNumExpansions > PackElements;
1023 void nextPackElement() {
1027 for (
auto &Pack : Packs) {
1029 if (!Pack.New.empty() || !DeducedArg.
isNull()) {
1030 while (Pack.New.size() < PackElements)
1032 if (Pack.New.size() == PackElements)
1033 Pack.New.push_back(DeducedArg);
1035 Pack.New[PackElements] = DeducedArg;
1036 DeducedArg = Pack.New.size() > PackElements + 1
1037 ? Pack.New[PackElements + 1]
1050 for (
auto &Pack : Packs) {
1052 Deduced[Pack.Index] = Pack.Saved;
1067 Pack.New.resize(PackElements);
1071 if (Pack.New.empty()) {
1077 std::copy(Pack.New.begin(), Pack.New.end(), ArgumentPack);
1085 Pack.New[0].wasDeducedFromArrayBound());
1091 if (Pack.Outer->DeferredDeduction.isNull()) {
1094 Pack.Outer->DeferredDeduction = NewPack;
1097 Loc = &Pack.Outer->DeferredDeduction;
1099 Loc = &Deduced[Pack.Index];
1105 S.
Context, OldPack, NewPack, DeducePackIfNotAlreadyDeduced);
1107 Info.AggregateDeductionCandidateHasMismatchedArity =
1113 if (!Result.isNull() && !Pack.DeferredDeduction.isNull()) {
1115 NewPack = Pack.DeferredDeduction;
1119 NamedDecl *Param = TemplateParams->getParam(Pack.Index);
1120 if (Result.isNull()) {
1122 Info.FirstArg = OldPack;
1123 Info.SecondArg = NewPack;
1124 return TemplateDeductionResult::Inconsistent;
1130 if (*Expansions != PackElements) {
1132 Info.FirstArg = Result;
1133 return TemplateDeductionResult::IncompletePack;
1140 return TemplateDeductionResult::Success;
1148 unsigned PackElements = 0;
1149 bool IsPartiallyExpanded =
false;
1150 bool DeducePackIfNotAlreadyDeduced =
false;
1151 bool DeducedFromEarlierParameter =
false;
1153 std::optional<unsigned> FixedNumExpansions;
1192 const QualType *Params,
unsigned NumParams,
1193 const QualType *Args,
unsigned NumArgs,
1206 = dyn_cast<PackExpansionType>(Params[
ParamIdx]);
1211 if (ArgIdx >= NumArgs)
1212 return TemplateDeductionResult::MiscellaneousDeductionFailure;
1214 if (isa<PackExpansionType>(Args[ArgIdx])) {
1219 return TemplateDeductionResult::MiscellaneousDeductionFailure;
1223 S, TemplateParams, Params[
ParamIdx].getUnqualifiedType(),
1224 Args[ArgIdx].getUnqualifiedType(), Info, Deduced, TDF,
1227 Result != TemplateDeductionResult::Success)
1242 PackDeductionScope PackScope(S, TemplateParams, Deduced, Info, Pattern);
1246 if (
ParamIdx + 1 == NumParams || PackScope.hasFixedArity()) {
1247 for (; ArgIdx < NumArgs && PackScope.hasNextElement(); ++ArgIdx) {
1253 Result != TemplateDeductionResult::Success)
1256 PackScope.nextPackElement();
1277 if (NumExpansions && !PackScope.isPartiallyExpanded()) {
1278 for (
unsigned I = 0; I != *NumExpansions && ArgIdx < NumArgs;
1280 PackScope.nextPackElement();
1286 if (
auto Result = PackScope.finish();
1287 Result != TemplateDeductionResult::Success)
1298 isa<PackExpansionType>(Args[ArgIdx]))
1299 return TemplateDeductionResult::Success;
1302 if (ArgIdx < NumArgs)
1303 return TemplateDeductionResult::MiscellaneousDeductionFailure;
1305 return TemplateDeductionResult::Success;
1317 if (ParamQs == ArgQs)
1361 if (!Guide || !Guide->isImplicit())
1363 return Guide->getDeducedTemplate()->getTemplateParameters()->size();
1373 if (ParamRef->getPointeeType().getQualifiers())
1376 return TypeParm && TypeParm->
getIndex() >= FirstInnerIndex;
1382 return cast<CXXRecordDecl>(
1439 assert(
T->
isRecordType() &&
"Base class that isn't a record?");
1441 ToVisit.push_back(
T);
1450 while (!ToVisit.empty()) {
1451 QualType NextT = ToVisit.pop_back_val();
1457 S, TemplateParams,
P, NextT, BaseInfo, DeducedCopy);
1463 Matches.insert({RD, DeducedCopy});
1474 if (Matches.size() > 1) {
1476 for (
const auto &Match : Matches)
1477 AddBases(Match.first);
1481 while (Matches.size() > 1 && !ToVisit.empty()) {
1491 if (Matches.empty())
1493 if (Matches.size() > 1)
1496 std::swap(Matches.front().second, Deduced);
1532 if (
const auto *AExp = dyn_cast<PackExpansionType>(A))
1533 A = AExp->getPattern();
1614 TDF &= ~TDF_TopLevelParameterTypeList;
1617 P =
P->getPointeeType();
1634 unsigned Index = TTP->getIndex();
1649 Info.
Param = cast<TemplateTypeParmDecl>(TemplateParams->
getParam(Index));
1661 "saw template type parameter with wrong depth");
1663 "Unresolved overloaded function");
1683 Info.
Param = cast<TemplateTypeParmDecl>(TemplateParams->
getParam(Index));
1703 Info.
Param = cast<TemplateTypeParmDecl>(TemplateParams->
getParam(Index));
1748 if (!
P->isDependentType()) {
1764 switch (
P.getCanonicalType()->getTypeClass()) {
1766#define NON_CANONICAL_TYPE(Class, Base) \
1767 case Type::Class: llvm_unreachable("deducing non-canonical type: " #Class);
1768#define TYPE(Class, Base)
1769#include "clang/AST/TypeNodes.inc"
1771 case Type::TemplateTypeParm:
1772 case Type::SubstTemplateTypeParmPack:
1773 llvm_unreachable(
"Type nodes handled above");
1781 if (
P->isDependentType())
1785 case Type::VariableArray:
1787 case Type::FunctionNoProto:
1790 case Type::ObjCObject:
1791 case Type::ObjCInterface:
1792 case Type::ObjCObjectPointer:
1802 case Type::Complex: {
1807 S, TemplateParams, CP->getElementType(), CA->getElementType(), Info,
1812 case Type::Atomic: {
1817 S, TemplateParams, PA->getValueType(), AA->getValueType(), Info,
1822 case Type::Pointer: {
1833 PointeeType, Info, Deduced,
1838 case Type::LValueReference: {
1845 S, TemplateParams, RP->getPointeeType(), RA->getPointeeType(), Info,
1850 case Type::RValueReference: {
1857 S, TemplateParams, RP->getPointeeType(), RA->getPointeeType(), Info,
1862 case Type::IncompleteArray: {
1868 assert(IAP &&
"Template parameter not of incomplete array type");
1871 S, TemplateParams, IAP->getElementType(), IAA->getElementType(), Info,
1876 case Type::ConstantArray: {
1880 if (!CAA || CAA->getSize() != CAP->getSize())
1884 S, TemplateParams, CAP->getElementType(), CAA->getElementType(), Info,
1889 case Type::DependentSizedArray: {
1898 S, TemplateParams, DAP->getElementType(), AA->getElementType(),
1912 "saw non-type template parameter with wrong depth");
1913 if (
const auto *CAA = dyn_cast<ConstantArrayType>(AA)) {
1914 llvm::APSInt Size(CAA->getSize());
1917 true, Info, Deduced);
1919 if (
const auto *DAA = dyn_cast<DependentSizedArrayType>(AA))
1920 if (DAA->getSizeExpr())
1922 S, TemplateParams, NTTP, DAA->getSizeExpr(), Info, Deduced);
1931 case Type::FunctionProto: {
1937 if (FPP->getMethodQuals() != FPA->getMethodQuals() ||
1938 FPP->getRefQualifier() != FPA->getRefQualifier() ||
1939 FPP->isVariadic() != FPA->isVariadic())
1944 S, TemplateParams, FPP->getReturnType(), FPA->getReturnType(),
1953 S, TemplateParams, FPP->param_type_begin(), FPP->getNumParams(),
1954 FPA->param_type_begin(), FPA->getNumParams(), Info, Deduced,
1965 Expr *NoexceptExpr = FPP->getNoexceptExpr();
1970 "saw non-type template parameter with wrong depth");
1972 llvm::APSInt Noexcept(1);
1973 switch (FPA->canThrow()) {
1983 true, Info, Deduced);
1986 if (
Expr *ArgNoexceptExpr = FPA->getNoexceptExpr())
1988 S, TemplateParams, NTTP, ArgNoexceptExpr, Info, Deduced);
2001 case Type::InjectedClassName:
2010 case Type::TemplateSpecialization: {
2035 Deduced = DeducedOrig;
2039 TemplateParams,
P, Info, Deduced);
2053 case Type::MemberPointer: {
2070 S, TemplateParams, PPT, APT, Info, Deduced, SubTDF);
2074 S, TemplateParams,
QualType(MPP->getClass(), 0),
2075 QualType(MPA->getClass(), 0), Info, Deduced, SubTDF);
2083 case Type::BlockPointer: {
2089 S, TemplateParams, BPP->getPointeeType(), BPA->getPointeeType(), Info,
2096 case Type::ExtVector: {
2101 if (VP->getNumElements() != VA->getNumElements())
2103 ElementType = VA->getElementType();
2108 ElementType = VA->getElementType();
2114 S, TemplateParams, VP->getElementType(), ElementType, Info, Deduced,
2118 case Type::DependentVector: {
2124 S, TemplateParams, VP->getElementType(), VA->getElementType(),
2125 Info, Deduced, TDF);
2136 ArgSize = VA->getNumElements();
2148 S, TemplateParams, VP->getElementType(), VA->getElementType(),
2149 Info, Deduced, TDF);
2160 VA->getSizeExpr(), Info, Deduced);
2169 case Type::DependentSizedExtVector: {
2175 S, TemplateParams, VP->getElementType(), VA->getElementType(),
2176 Info, Deduced, TDF);
2187 ArgSize = VA->getNumElements();
2199 S, TemplateParams, VP->getElementType(), VA->getElementType(),
2200 Info, Deduced, TDF);
2211 VA->getSizeExpr(), Info, Deduced);
2221 case Type::ConstantMatrix: {
2228 if (MP->getNumRows() != MA->getNumRows() ||
2229 MP->getNumColumns() != MA->getNumColumns()) {
2234 S, TemplateParams, MP->getElementType(), MA->getElementType(), Info,
2238 case Type::DependentSizedMatrix: {
2247 Info, Deduced, TDF);
2252 auto DeduceMatrixArg =
2253 [&S, &Info, &Deduced, &TemplateParams](
2257 const auto *ACM = dyn_cast<ConstantMatrixType>(A);
2258 const auto *ADM = dyn_cast<DependentSizedMatrixType>(A);
2259 if (!ParamExpr->isValueDependent()) {
2260 std::optional<llvm::APSInt> ParamConst =
2261 ParamExpr->getIntegerConstantExpr(S.
Context);
2266 if ((ACM->*GetArgDimension)() == *ParamConst)
2271 Expr *ArgExpr = (ADM->*GetArgDimensionExpr)();
2272 if (std::optional<llvm::APSInt> ArgConst =
2274 if (*ArgConst == *ParamConst)
2285 llvm::APSInt ArgConst(
2287 ArgConst = (ACM->*GetArgDimension)();
2290 true, Info, Deduced);
2294 (ADM->*GetArgDimensionExpr)(),
2298 if (
auto Result = DeduceMatrixArg(MP->getRowExpr(), MA,
2304 return DeduceMatrixArg(MP->getColumnExpr(), MA,
2312 case Type::DependentAddressSpace: {
2318 S, TemplateParams, ASP->getPointeeType(), ASA->getPointeeType(),
2319 Info, Deduced, TDF);
2330 S, TemplateParams, NTTP, ASA->getAddrSpaceExpr(), Info, Deduced);
2340 S, TemplateParams, ASP->getPointeeType(),
2353 true, Info, Deduced);
2358 case Type::DependentBitInt: {
2362 if (IP->isUnsigned() != IA->isUnsigned())
2371 ArgSize = IA->getNumBits();
2379 if (IP->isUnsigned() != IA->isUnsigned())
2387 case Type::TypeOfExpr:
2389 case Type::DependentName:
2390 case Type::UnresolvedUsing:
2391 case Type::Decltype:
2392 case Type::UnaryTransform:
2393 case Type::DeducedTemplateSpecialization:
2394 case Type::DependentTemplateSpecialization:
2395 case Type::PackExpansion:
2397 case Type::ArrayParameter:
2401 case Type::PackIndexing: {
2411 llvm_unreachable(
"Invalid Type Class!");
2425 switch (
P.getKind()) {
2427 llvm_unreachable(
"Null template argument in parameter list");
2432 S, TemplateParams,
P.getAsType(), A.
getAsType(), Info, Deduced, 0);
2447 llvm_unreachable(
"caller should handle pack expansions");
2514 llvm_unreachable(
"Unknown template argument kind");
2520 llvm_unreachable(
"Argument packs should be expanded by the caller!");
2523 llvm_unreachable(
"Invalid TemplateArgument Kind!");
2536 if (ArgIdx == Args.size())
2543 assert(ArgIdx == Args.size() - 1 &&
"Pack not at the end of argument list?");
2546 return ArgIdx < Args.size();
2552 bool FoundPackExpansion =
false;
2553 for (
const auto &A : Args) {
2554 if (FoundPackExpansion)
2562 if (A.isPackExpansion())
2563 FoundPackExpansion =
true;
2576 if (
PackFold == PackFold::ArgumentToParameter)
2592 if (!
P.isPackExpansion()) {
2597 return NumberOfArgumentsMustMatch
2604 if (As[ArgIdx].isPackExpansion())
2609 if (
PackFold == PackFold::ArgumentToParameter)
2631 PackDeductionScope PackScope(S, TemplateParams, Deduced, Info, Pattern);
2637 PackScope.hasNextElement();
2640 if (
PackFold == PackFold::ArgumentToParameter)
2648 PackScope.nextPackElement();
2653 if (
auto Result = PackScope.finish();
2665 bool NumberOfArgumentsMustMatch) {
2666 return ::DeduceTemplateArguments(*
this, TemplateParams, Ps, As, Info, Deduced,
2667 NumberOfArgumentsMustMatch);
2675 bool PackExpansionMatchesPack =
false) {
2678 if (PackExpansionMatchesPack &&
X.isPackExpansion() && !Y.
isPackExpansion())
2679 X =
X.getPackExpansionPattern();
2684 switch (
X.getKind()) {
2686 llvm_unreachable(
"Comparing NULL template argument");
2709 return X.structurallyEquals(Y);
2712 llvm::FoldingSetNodeID XID, YID;
2713 X.getAsExpr()->Profile(XID, Context,
true);
2719 unsigned PackIterationSize =
X.pack_size();
2728 bool XHasMoreArg =
X.pack_size() > Y.
pack_size();
2729 if (!(XHasMoreArg &&
X.pack_elements().back().isPackExpansion()) &&
2730 !(!XHasMoreArg && Y.
pack_elements().back().isPackExpansion()))
2739 for (
unsigned i = 0; i < PackIterationSize; ++i)
2741 PackExpansionMatchesPack))
2747 llvm_unreachable(
"Invalid TemplateArgument Kind!");
2756 llvm_unreachable(
"Can't get a NULL template argument here");
2791 Builder.MakeTrivial(
Context, DTN->getQualifier(),
Loc);
2794 Builder.MakeTrivial(
Context, QTN->getQualifier(),
Loc);
2811 llvm_unreachable(
"Invalid TemplateArgument Kind!");
2829 unsigned ArgumentPackIndex) {
2851 CanonicalPackedArgsBuilder;
2859 "deduced nested pack");
2866 diag::err_template_arg_deduced_incomplete_pack)
2870 if (ConvertArg(InnerArg, SugaredPackedArgsBuilder.size()))
2874 SugaredPackedArgsBuilder.push_back(SugaredOutput.pop_back_val());
2875 CanonicalPackedArgsBuilder.push_back(CanonicalOutput.pop_back_val());
2880 if (SugaredPackedArgsBuilder.empty()) {
2885 if (
auto *NTTP = dyn_cast<NonTypeTemplateParmDecl>(Param)) {
2887 NTTP, SugaredOutput,
2890 S.
SubstType(NTTP->getType(), Args, NTTP->getLocation(),
2891 NTTP->getDeclName()).isNull())
2893 }
else if (
auto *TTP = dyn_cast<TemplateTemplateParmDecl>(Param)) {
2904 SugaredOutput.push_back(
2907 S.
Context, CanonicalPackedArgsBuilder));
2911 return ConvertArg(Arg, 0);
2917template <
typename TemplateDeclT>
2919 Sema &S, TemplateDeclT *Template,
bool IsDeduced,
2925 unsigned NumAlreadyConverted = 0,
bool PartialOverloading =
false) {
2928 for (
unsigned I = 0, N = TemplateParams->
size(); I != N; ++I) {
2937 PackDeductionScope(S, TemplateParams, Deduced, Info, I).finish();
2942 if (!Deduced[I].isNull()) {
2943 if (I < NumAlreadyConverted) {
2948 CurrentInstantiationScope->getPartiallySubstitutedPack() == Param) {
2951 CurrentInstantiationScope->ResetPartiallySubstitutedPack();
2958 SugaredBuilder.push_back(Deduced[I]);
2959 CanonicalBuilder.push_back(
2968 IsDeduced, SugaredBuilder,
2969 CanonicalBuilder)) {
2982 bool HasDefaultArg =
false;
2985 assert(isa<ClassTemplatePartialSpecializationDecl>(Template) ||
2986 isa<VarTemplatePartialSpecializationDecl>(Template));
2995 if (Rec->isLambda())
2996 if (
auto *Method = dyn_cast<CXXMethodDecl>(Rec->getDeclContext())) {
2998 ThisTypeQuals = Method->getMethodQualifiers();
3006 SugaredBuilder, CanonicalBuilder, HasDefaultArg);
3015 if (PartialOverloading)
break;
3040 if (
auto *DC = dyn_cast<DeclContext>(
D))
3046 static constexpr bool value =
false;
3050 static constexpr bool value =
true;
3054 static constexpr bool value =
true;
3056template <
typename TemplateDeclT>
3071template <
typename TemplateDeclT>
3078 Template->getAssociatedConstraints(AssociatedConstraints);
3080 std::optional<ArrayRef<TemplateArgument>> Innermost;
3084 Innermost = CanonicalDeducedArgs;
3087 Template, Template->getDeclContext(),
false, Innermost,
3111template <
typename T>
3112static std::enable_if_t<IsPartialSpecialization<T>::value,
3115 Sema &S,
T *Partial,
bool IsPartialOrdering,
3131 S, Partial, IsPartialOrdering, Deduced, Info, SugaredBuilder,
3142 Info.
reset(SugaredDeducedArgumentList, CanonicalDeducedArgumentList);
3150 auto *Template = Partial->getSpecializedTemplate();
3152 Partial->getTemplateArgsAsWritten();
3163 if (
ParamIdx >= Partial->getTemplateParameters()->size())
3164 ParamIdx = Partial->getTemplateParameters()->size() - 1;
3167 Partial->getTemplateParameters()->getParam(
ParamIdx));
3169 Info.
FirstArg = (*PartialTemplArgInfo)[ArgIdx].getArgument();
3175 CanonicalConvertedInstArgs;
3177 Template, Partial->getLocation(), InstArgs,
false,
3178 SugaredConvertedInstArgs, CanonicalConvertedInstArgs,
3185 for (
unsigned I = 0,
E = TemplateParams->
size(); I !=
E; ++I) {
3188 IsPartialOrdering)) {
3200 CanonicalBuilder, Info);
3228 SugaredBuilder, CanonicalBuilder,
3236 for (
unsigned I = 0,
E = TemplateParams->
size(); I !=
E; ++I) {
3251 CanonicalBuilder, Info);
3276 S, TD,
false, Deduced, Info, SugaredBuilder,
3285 CanonicalBuilder, Info);
3295template <
typename T>
3296static std::enable_if_t<IsPartialSpecialization<T>::value,
3301 if (Partial->isInvalidDecl())
3320 Deduced.resize(Partial->getTemplateParameters()->size());
3322 S, Partial->getTemplateParameters(),
3323 Partial->getTemplateArgs().asArray(), TemplateArgs, Info, Deduced,
3339 Result = ::FinishTemplateArgumentDeduction(S, Partial,
3341 TemplateArgs, Deduced, Info);
3350 return ::DeduceTemplateArguments(*
this, Partial, TemplateArgs, Info);
3356 return ::DeduceTemplateArguments(*
this, Partial, TemplateArgs, Info);
3366 if (
const auto *CTD = dyn_cast<ClassTemplateDecl>(TD)) {
3369 }
else if (
const auto *
AliasTemplate = dyn_cast<TypeAliasTemplateDecl>(TD)) {
3371 ->getUnderlyingType()
3372 .getCanonicalType();
3374 assert(
false &&
"Expected a class or alias template");
3393 return DeducedResult;
3406 Result = ::FinishTemplateArgumentDeduction(*this, TD, Deduced, Info);
3415 return Spec->getTemplateName().getAsTemplateDecl() !=
nullptr;
3441 if (ExplicitTemplateArgs.
size() == 0) {
3445 ParamTypes.push_back(
P->getType());
3475 ExplicitTemplateArgs,
true, SugaredBuilder,
3479 unsigned Index = SugaredBuilder.size();
3480 if (Index >= TemplateParams->
size())
3493 CanonicalExplicitArgumentList);
3505 unsigned PartiallySubstitutedPackIndex = -1u;
3506 if (!CanonicalBuilder.empty()) {
3509 auto *Param = TemplateParams->
getParam(CanonicalBuilder.size() - 1);
3513 if (!Expansions || Arg.
pack_size() < *Expansions) {
3514 PartiallySubstitutedPackIndex = CanonicalBuilder.size() - 1;
3523 assert(Proto &&
"Function template does not have a prototype?");
3531 SugaredExplicitArgumentList->
asArray(),
3541 nullptr, ExtParamInfos))
3558 ThisTypeQuals = Method->getMethodQualifiers();
3572 Diag(
Function->getLocation(), diag::err_kern_type_not_void_return)
3583 nullptr, ExtParamInfos))
3607 Deduced.reserve(TemplateParams->
size());
3608 for (
unsigned I = 0, N = SugaredExplicitArgumentList->
size(); I != N; ++I) {
3610 if (I == PartiallySubstitutedPackIndex)
3613 Deduced.push_back(Arg);
3682 if (AQuals == DeducedAQuals) {
3700 bool ObjCLifetimeConversion =
false;
3704 ObjCLifetimeConversion) ||
3750 if (PD->isParameterPack()) {
3751 unsigned NumExpansions =
3753 if (Idx + NumExpansions >
ParamIdx)
3755 Idx += NumExpansions;
3763 llvm_unreachable(
"parameter index would not be produced from template");
3775 return isa<CXXConstructorDecl>(
D)
3776 ? cast<CXXConstructorDecl>(
D)->getExplicitSpecifier()
3777 : cast<CXXConversionDecl>(
D)->getExplicitSpecifier();
3780 isa<CXXConstructorDecl>(
D)
3781 ? cast<CXXConstructorDecl>(
D)->setExplicitSpecifier(ES)
3782 : cast<CXXConversionDecl>(
D)->setExplicitSpecifier(ES);
3793 S, Info.
getLocation(), FunctionTemplate, DeducedArgs,
3814 bool PartialOverloading, llvm::function_ref<
bool()> CheckNonDependent) {
3838 NumExplicitlySpecified, PartialOverloading);
3851 if (CheckNonDependent())
3859 Info.
reset(SugaredDeducedArgumentList, CanonicalDeducedArgumentList);
3891 assert(
Specialization->getPrimaryTemplate()->getCanonicalDecl() ==
3897 CanonicalDeducedArgumentList &&
3917 if (!PartialOverloading ||
3918 (CanonicalBuilder.size() ==
3935 if (isa<CXXConstructorDecl, CXXConversionDecl>(
Specialization)) {
3944 if (OriginalCallArgs) {
3949 llvm::SmallDenseMap<std::pair<unsigned, QualType>,
QualType> DeducedATypes;
3950 for (
unsigned I = 0, N = OriginalCallArgs->size(); I != N; ++I) {
3954 unsigned ExplicitOffset =
3974 if (CacheEntry.
isNull()) {
3983 DeducedA = CacheEntry;
3998 SuppressedDiagnosticsMap::iterator
4013 if (S.
getLangOpts().CPlusPlus14 && Fn->getReturnType()->isUndeducedType() &&
4018 if (Method->isImplicitObjectMemberFunction()) {
4039 bool ParamWasReference,
4048 if (ParamWasReference)
4065 nullptr, FailedTSC))
4106 if (ArgType.
isNull())
continue;
4126 Deduced(TemplateParams->
size());
4129 S, TemplateParams, ParamType, ArgType, Info, Deduced, TDF);
4167 assert(Arg &&
"expected a non-null arg expression");
4169 ParamRefType !=
nullptr, FailedTSC);
4177 assert(Arg &&
"expected a non-null arg expression");
4232 (isa<PointerType>(ParamType) &&
4251 bool DecomposedParam,
unsigned ArgIdx,
unsigned TDF,
4276 ElTy = ArrTy->getElementType();
4286 if (isa<DesignatedInitExpr>(
E))
4293 S, TemplateParams, 0, ElTy,
E->
getType(),
4295 OriginalCallArgs,
true, ArgIdx, TDF);
4303 if (
auto *DependentArrTy = dyn_cast_or_null<DependentSizedArrayType>(ArrTy)) {
4314 S, TemplateParams, NTTP, llvm::APSInt(Size),
T,
4315 true, Info, Deduced);
4333 bool DecomposedParam,
unsigned ArgIdx,
unsigned TDF,
4336 QualType OrigParamType = ParamType;
4341 S, TemplateParams, FirstInnerIndex, ParamType, ArgType,
4342 ArgClassification, Arg, TDF, FailedTSC))
4346 if (
InitListExpr *ILE = dyn_cast_if_present<InitListExpr>(Arg))
4348 Deduced, OriginalCallArgs, ArgIdx, TDF);
4356 OriginalCallArgs.push_back(
4359 ArgType, Info, Deduced, TDF);
4366 bool PartialOverloading,
bool AggregateDeductionCandidate,
4373 unsigned NumParams =
Function->getNumParams();
4374 bool HasExplicitObject =
false;
4375 int ExplicitObjectOffset = 0;
4376 if (
Function->hasCXXExplicitFunctionObjectParameter()) {
4377 HasExplicitObject =
true;
4378 ExplicitObjectOffset = 1;
4387 if (Args.size() <
Function->getMinRequiredExplicitArguments() &&
4388 !PartialOverloading)
4391 PartialOverloading)) {
4393 if (Proto->isTemplateVariadic())
4395 else if (!Proto->isVariadic())
4406 unsigned NumExplicitlySpecified = 0;
4407 if (ExplicitTemplateArgs) {
4410 Result = SubstituteExplicitTemplateArguments(
4411 FunctionTemplate, *ExplicitTemplateArgs, Deduced, ParamTypes, nullptr,
4417 NumExplicitlySpecified = Deduced.size();
4420 for (
unsigned I = 0; I != NumParams; ++I)
4421 ParamTypes.push_back(
Function->getParamDecl(I)->getType());
4427 auto DeduceCallArgument = [&](
QualType ParamType,
unsigned ArgIdx,
4428 bool ExplicitObjectArgument) {
4436 if (ExplicitObjectArgument) {
4439 *
this, TemplateParams, FirstInnerIndex, ParamType, ObjectType,
4440 ObjectClassification,
4441 nullptr, Info, Deduced, OriginalCallArgs,
4447 *
this, TemplateParams, FirstInnerIndex, ParamType,
4448 Args[ArgIdx]->getType(), Args[ArgIdx]->Classify(
getASTContext()),
4449 Args[ArgIdx], Info, Deduced, OriginalCallArgs,
false,
4454 Deduced.resize(TemplateParams->
size());
4456 for (
unsigned ParamIdx = 0, NumParamTypes = ParamTypes.size(), ArgIdx = 0;
4461 dyn_cast<PackExpansionType>(ParamType);
4462 if (!ParamExpansion) {
4464 if (ArgIdx >= Args.size() && !(HasExplicitObject &&
ParamIdx == 0))
4467 ParamTypesForArgChecking.push_back(ParamType);
4469 if (
ParamIdx == 0 && HasExplicitObject) {
4470 if (
auto Result = DeduceCallArgument(ParamType, 0,
4477 if (
auto Result = DeduceCallArgument(ParamType, ArgIdx++,
4485 bool IsTrailingPack =
ParamIdx + 1 == NumParamTypes;
4488 PackDeductionScope PackScope(*
this, TemplateParams, Deduced, Info,
4490 AggregateDeductionCandidate && IsTrailingPack);
4508 if (IsTrailingPack || PackScope.hasFixedArity()) {
4509 for (; ArgIdx < Args.size() && PackScope.hasNextElement();
4510 PackScope.nextPackElement(), ++ArgIdx) {
4511 ParamTypesForArgChecking.push_back(ParamPattern);
4512 if (
auto Result = DeduceCallArgument(ParamPattern, ArgIdx,
4521 std::optional<unsigned> NumExpansions =
4523 if (NumExpansions && !PackScope.isPartiallyExpanded()) {
4524 for (
unsigned I = 0; I != *NumExpansions && ArgIdx < Args.size();
4526 ParamTypesForArgChecking.push_back(ParamPattern);
4529 PackScope.nextPackElement();
4531 }
else if (!IsTrailingPack && !PackScope.isPartiallyExpanded() &&
4532 PackScope.isDeducedFromEarlierParameter()) {
4545 std::optional<unsigned> ArgPosAfterSubstitution =
4546 PackScope.getSavedPackSizeIfAllEqual();
4547 if (!ArgPosAfterSubstitution)
4550 unsigned PackArgEnd = ArgIdx + *ArgPosAfterSubstitution;
4551 for (; ArgIdx < PackArgEnd && ArgIdx < Args.size(); ArgIdx++) {
4552 ParamTypesForArgChecking.push_back(ParamPattern);
4554 DeduceCallArgument(ParamPattern, ArgIdx,
4559 PackScope.nextPackElement();
4566 if (
auto Result = PackScope.finish();
4577 Result = FinishTemplateArgumentDeduction(
4578 FunctionTemplate, Deduced, NumExplicitlySpecified, Specialization, Info,
4579 &OriginalCallArgs, PartialOverloading, [&, CallingCtx]() {
4580 ContextRAII SavedContext(*this, CallingCtx);
4581 return CheckNonDependent(ParamTypesForArgChecking);
4589 bool AdjustExceptionSpec) {
4590 if (ArgFunctionType.
isNull())
4591 return ArgFunctionType;
4596 bool Rebuild =
false;
4599 if (EPI.ExtInfo.getCC() != CC) {
4600 EPI.
ExtInfo = EPI.ExtInfo.withCallingConv(CC);
4604 bool NoReturn = FunctionTypeP->getNoReturnAttr();
4605 if (EPI.ExtInfo.getNoReturn() != NoReturn) {
4606 EPI.ExtInfo = EPI.ExtInfo.withNoReturn(NoReturn);
4610 if (AdjustExceptionSpec && (FunctionTypeP->hasExceptionSpec() ||
4612 EPI.ExceptionSpec = FunctionTypeP->getExtProtoInfo().ExceptionSpec;
4617 return ArgFunctionType;
4627 bool IsAddressOfFunction) {
4639 unsigned NumExplicitlySpecified = 0;
4641 if (ExplicitTemplateArgs) {
4644 Result = SubstituteExplicitTemplateArguments(
4645 FunctionTemplate, *ExplicitTemplateArgs, Deduced, ParamTypes,
4646 &FunctionType, Info);
4651 NumExplicitlySpecified = Deduced.size();
4657 if (!IsAddressOfFunction)
4666 Deduced.resize(TemplateParams->
size());
4670 bool HasDeducedReturnType =
false;
4672 Function->getReturnType()->getContainedAutoType()) {
4674 HasDeducedReturnType =
true;
4682 *
this, TemplateParams,
FunctionType, ArgFunctionType, Info, Deduced,
4690 Result = FinishTemplateArgumentDeduction(FunctionTemplate, Deduced,
4691 NumExplicitlySpecified,
4692 Specialization, Info);
4699 if (HasDeducedReturnType && IsAddressOfFunction &&
4720 if (!IsAddressOfFunction) {
4726 if (HasDeducedReturnType) {
4735 if (!ArgFunctionType.
isNull()) {
4740 SpecializationType, ArgFunctionType)) {
4770 P = PRef->getPointeeType();
4782 P =
P.getUnqualifiedType();
4789 assert(!A->
isReferenceType() &&
"Reference types were handled above");
4794 if (
P->isArrayType())
4799 else if (
P->isFunctionType())
4804 P =
P.getUnqualifiedType();
4826 Deduced.resize(TemplateParams->
size());
4855 ParamType, ObjectType, ObjectClassification,
4856 nullptr, Info, Deduced, OriginalCallArgs,
4863 *
this, TemplateParams,
P, A, Info, Deduced, TDF);
4873 Result = FinishTemplateArgumentDeduction(ConversionTemplate, Deduced, 0,
4874 ConversionSpecialized, Info,
4877 Specialization = cast_or_null<CXXConversionDecl>(ConversionSpecialized);
4886 bool IsAddressOfFunction) {
4889 IsAddressOfFunction);
4893 struct DependentAuto {
bool IsPack; };
4897 class SubstituteDeducedTypeTransform :
4900 bool ReplacementIsPack;
4905 SubstituteDeducedTypeTransform(
Sema &SemaRef, DependentAuto DA)
4907 ReplacementIsPack(DA.IsPack), UseTypeSugar(
true) {}
4909 SubstituteDeducedTypeTransform(
Sema &SemaRef,
QualType Replacement,
4910 bool UseTypeSugar =
true)
4912 Replacement(Replacement), ReplacementIsPack(
false),
4913 UseTypeSugar(UseTypeSugar) {}
4916 assert(isa<TemplateTypeParmType>(Replacement) &&
4917 "unexpected unsugared replacement kind");
4935 return TransformDesugared(TLB, TL);
4937 QualType Result = SemaRef.Context.getAutoType(
4946 QualType TransformDeducedTemplateSpecializationType(
4949 return TransformDesugared(TLB, TL);
4951 QualType Result = SemaRef.Context.getDeducedTemplateSpecializationType(
4953 Replacement, Replacement.isNull());
4971 return inherited::TransformExceptionSpec(
Loc, ESI, Exceptions, Changed);
4979 return TransformType(TLB, TL);
4995 Deduced,
TypeLoc.getNameLoc())));
4996 for (
unsigned I = 0,
C =
TypeLoc.getNumArgs(); I !=
C; ++I)
5002 SugaredConverted, CanonicalConverted))
5018 S.
getASTContext(), Concept->getDeclContext(), Concept->getLocation(),
5019 CanonicalConverted));
5026 llvm::raw_string_ostream OS(Buf);
5027 OS <<
"'" << Concept->getName();
5028 if (
TypeLoc.hasExplicitTemplateArgs()) {
5031 Type.getTypeConstraintConcept()->getTemplateParameters());
5036 diag::err_placeholder_constraints_not_satisfied)
5047 bool IgnoreConstraints,
5050 if (
Init->containsErrors())
5063 DependentAuto DependentResult = {
5066 if (!DependentDeduction &&
5068 Init->containsUnexpandedParameterPack())) {
5069 Result = SubstituteDeducedTypeTransform(*
this, DependentResult).Apply(
Type);
5070 assert(!
Result.isNull() &&
"substituting DependentTy can't fail");
5075 auto *String = dyn_cast<StringLiteral>(
Init);
5077 Diag(
Type.getBeginLoc(), diag::ext_c23_auto_non_plain_identifier);
5079 Result = SubstituteDeducedTypeTransform(*
this, DependentResult).Apply(TL);
5080 assert(!
Result.isNull() &&
"substituting DependentTy can't fail");
5086 Diag(
Type.getBeginLoc(), diag::ext_c23_auto_non_plain_identifier);
5089 auto *InitList = dyn_cast<InitListExpr>(
Init);
5091 Diag(
Init->getBeginLoc(), diag::err_auto_init_list_from_c)
5103 if (
Init->isTypeDependent()) {
5105 SubstituteDeducedTypeTransform(*
this, DependentResult).Apply(
Type);
5106 assert(!
Result.isNull() &&
"substituting DependentTy can't fail");
5118 Diag(
Init->getBeginLoc(), diag::err_decltype_auto_initializer_list);
5131 nullptr,
false,
false,
false);
5145 for (
Expr *
Init : InitList->inits()) {
5148 if (isa<DesignatedInitExpr>(
Init))
5151 *
this, TemplateParamsSt.get(), 0, TemplArg,
Init->getType(),
5153 OriginalCallArgs,
true,
5159 <<
Init->getSourceRange();
5162 return DeductionFailed(TDK);
5167 DeducedFromInitRange =
Init->getSourceRange();
5171 Diag(
Loc, diag::err_auto_bitfield);
5175 SubstituteDeducedTypeTransform(*
this, TemplArg).Apply(
Type);
5176 assert(!FuncParam.
isNull() &&
5177 "substituting template parameter for 'auto' failed");
5179 *
this, TemplateParamsSt.get(), 0, FuncParam,
Init->getType(),
5181 OriginalCallArgs,
false, 0, 0,
5184 return DeductionFailed(TDK);
5221 assert((
bool)InitList == OriginalArg.DecomposedParam &&
5222 "decomposed non-init-list in auto deduction?");
5227 return DeductionFailed(TDK);
5237 return SubstituteDeducedTypeTransform(*
this, TypeToReplaceAuto)
5238 .TransformType(TypeWithAuto);
5244 return SubstituteDeducedTypeTransform(*
this, TypeToReplaceAuto)
5245 .TransformType(TypeWithAuto);
5249 return SubstituteDeducedTypeTransform(*
this, DependentAuto{
false})
5250 .TransformType(TypeWithAuto);
5255 return SubstituteDeducedTypeTransform(*
this, DependentAuto{
false})
5256 .TransformType(TypeWithAuto);
5261 return SubstituteDeducedTypeTransform(*
this, TypeToReplaceAuto,
5263 .TransformType(TypeWithAuto);
5268 return SubstituteDeducedTypeTransform(*
this, TypeToReplaceAuto,
5270 .TransformType(TypeWithAuto);
5275 if (isa<InitListExpr>(
Init))
5278 ? diag::err_init_capture_deduction_failure_from_init_list
5279 : diag::err_auto_var_deduction_failure_from_init_list)
5283 VDecl->
isInitCapture() ? diag::err_init_capture_deduction_failure
5284 : diag::err_auto_var_deduction_failure)
5286 <<
Init->getSourceRange();
5318 "failed to deduce lambda return type");
5345 Diag(
Loc, diag::err_auto_fn_used_before_defined) << FD;
5349 return StillUndeduced;
5393 "expected a member function with no explicit object parameter");
5418 assert(Proto1 && Proto2 &&
"Function templates must have prototypes");
5421 Deduced.resize(TemplateParams->
size());
5430 Args1.data(), Args1.size(), Info, Deduced,
5441 S, TemplateParams, Proto2->getReturnType(), Proto1->
getReturnType(),
5451 S, TemplateParams, FD2->
getType(), FD1->
getType(), Info, Deduced,
5464 unsigned ArgIdx = 0, NumArgs = Deduced.size();
5465 for (; ArgIdx != NumArgs; ++ArgIdx)
5466 if (Deduced[ArgIdx].isNull())
5473 if (ArgIdx == NumArgs) {
5480 llvm::SmallBitVector UsedParameters(TemplateParams->
size());
5483 for (
unsigned I = 0, N = Args2.size(); I != N; ++I)
5485 TemplateParams->
getDepth(), UsedParameters);
5491 TemplateParams->
getDepth(), UsedParameters);
5517 false, TemplateParams->
getDepth(), UsedParameters);
5521 for (; ArgIdx != NumArgs; ++ArgIdx)
5524 if (Deduced[ArgIdx].isNull() && UsedParameters[ArgIdx])
5538 bool ShouldConvert1 =
false;
5539 bool ShouldConvert2 =
false;
5550 const CXXMethodDecl *Method1 = dyn_cast<CXXMethodDecl>(FD1);
5551 const CXXMethodDecl *Method2 = dyn_cast<CXXMethodDecl>(FD2);
5561 ShouldConvert1 = Method1 && !Method1->isExplicitObjectMemberFunction();
5563 if (ShouldConvert1) {
5567 : Proto2->param_type_begin()[0]->isRValueReferenceType();
5571 Args1.push_back(Obj1Ty);
5573 if (ShouldConvert2) {
5576 ? Method1->getRefQualifier() ==
RQ_RValue
5581 Args2.push_back(Obj2Ty);
5583 size_t NumComparedArguments = NumCallArguments1;
5587 ++NumComparedArguments;
5591 Args2.insert(Args2.end(), Proto2->param_type_begin(),
5592 Proto2->param_type_end());
5597 Args1.resize(std::min(Args1.size(), NumComparedArguments));
5598 Args2.resize(std::min(Args2.size(), NumComparedArguments));
5601 std::reverse(Args2.begin(), Args2.end());
5610 if (Better1 != Better2)
5611 return Better1 ? FT1 : FT2;
5613 if (!Better1 && !Better2)
5622 Param1.reserve(FD1->
param_size() + ShouldConvert1);
5624 Param1.push_back(Obj1Ty);
5626 Param1.push_back(
P->getType());
5629 Param2.reserve(FD2->
param_size() + ShouldConvert2);
5631 Param2.push_back(Obj2Ty);
5633 Param2.push_back(
P->getType());
5635 unsigned NumParams1 = Param1.size();
5636 unsigned NumParams2 = Param2.size();
5642 if (Variadic1 != Variadic2) {
5643 if (Variadic1 && NumParams1 > NumParams2)
5645 if (Variadic2 && NumParams2 > NumParams1)
5651 for (
int i = 0, e = std::min(NumParams1, NumParams2); i < e; ++i) {
5652 QualType T1 = Param1[i].getCanonicalType();
5653 QualType T2 = Param2[i].getCanonicalType();
5654 auto *TST1 = dyn_cast<TemplateSpecializationType>(T1);
5655 auto *TST2 = dyn_cast<TemplateSpecializationType>(T2);
5660 assert(TST1->template_arguments().size() ==
5661 TST2->template_arguments().size());
5666 bool IsPackExpansion1 =
5668 bool IsPackExpansion2 =
5670 if (PackSize1 != PackSize2 && IsPackExpansion1 != IsPackExpansion2) {
5671 if (PackSize1 > PackSize2 && IsPackExpansion1)
5673 if (PackSize1 < PackSize2 && IsPackExpansion2)
5695 if (TPL1->
size() != TPL2->
size() || NumParams1 != NumParams2)
5711 for (
unsigned i = 0; i < NumParams1; ++i)
5727 bool AtLeastAsConstrained1, AtLeastAsConstrained2;
5732 if (AtLeastAsConstrained1 == AtLeastAsConstrained2)
5734 return AtLeastAsConstrained1 ? FT1 : FT2;
5753 bool Complain,
QualType TargetType) {
5754 if (SpecBegin == SpecEnd) {
5762 if (SpecBegin + 1 == SpecEnd)
5769 = cast<FunctionDecl>(*Best)->getPrimaryTemplate();
5770 assert(BestTemplate &&
"Not a function template specialization?");
5773 = cast<FunctionDecl>(*I)->getPrimaryTemplate();
5774 assert(Challenger &&
"Not a function template specialization?");
5779 BestTemplate = Challenger;
5785 bool Ambiguous =
false;
5788 = cast<FunctionDecl>(*I)->getPrimaryTemplate();
5810 const auto *FD = cast<FunctionDecl>(*I);
5812 FD->getPrimaryTemplate()->getTemplateParameters(),
5813 *FD->getTemplateSpecializationArgs());
5814 if (!TargetType.
isNull())
5816 Diag((*I)->getLocation(), PD);
5826 "not for function templates");
5836 bool AtLeastAsConstrained1, AtLeastAsConstrained2;
5841 if (AtLeastAsConstrained1 == AtLeastAsConstrained2)
5843 return AtLeastAsConstrained1 ? FD1 : FD2;
5853template<
typename TemplateLikeDecl>
5855 TemplateLikeDecl *P2,
5884 Deduced.resize(P2->getTemplateParameters()->size());
5886 S, P2->getTemplateParameters(), T2, T1, Info, Deduced,
TDF_None,
5897 const auto *TST1 = cast<TemplateSpecializationType>(T1);
5898 bool AtLeastAsSpecialized;
5900 AtLeastAsSpecialized =
5901 FinishTemplateArgumentDeduction(
5902 S, P2, true, TST1->template_arguments(),
5903 Deduced, Info) == TemplateDeductionResult::Success;
5905 return AtLeastAsSpecialized;
5912 template <
typename T1,
typename T2,
5913 std::enable_if_t<std::is_same_v<T1, T2>,
bool> =
true>
5914 T2 *operator()(T1 *, T2 *P2) {
5917 template <
typename T1,
typename T2,
5918 std::enable_if_t<!std::is_same_v<T1, T2>,
bool> =
true>
5919 T1 *operator()(T1 *, T2 *) {
5925struct TemplateArgumentListAreEqual {
5927 TemplateArgumentListAreEqual(
ASTContext &Ctx) : Ctx(Ctx) {}
5929 template <
typename T1,
typename T2,
5930 std::enable_if_t<std::is_same_v<T1, T2>,
bool> =
true>
5931 bool operator()(T1 *PS1, T2 *PS2) {
5933 Args2 = PS2->getTemplateArgs().asArray();
5935 for (
unsigned I = 0,
E = Args1.size(); I <
E; ++I) {
5939 llvm::FoldingSetNodeID IDA, IDB;
5940 Args1[I].Profile(IDA, Ctx);
5941 Args2[I].Profile(IDB, Ctx);
5948 template <
typename T1,
typename T2,
5949 std::enable_if_t<!std::is_same_v<T1, T2>,
bool> =
true>
5950 bool operator()(T1 *Spec, T2 *Primary) {
5952 Args2 = Primary->getInjectedTemplateArgs();
5954 for (
unsigned I = 0,
E = Args1.size(); I <
E; ++I) {
5958 llvm::FoldingSetNodeID IDA, IDB;
5959 Args1[I].Profile(IDA, Ctx);
5993template <
typename TemplateLikeDecl,
typename PrimaryDel>
5994static TemplateLikeDecl *
5997 constexpr bool IsMoreSpecialThanPrimaryCheck =
5998 !std::is_same_v<TemplateLikeDecl, PrimaryDel>;
6001 if (IsMoreSpecialThanPrimaryCheck && !Better1)
6005 if (IsMoreSpecialThanPrimaryCheck && !Better2)
6011 if (Better1 != Better2)
6012 return Better1 ? P1 : GetP2()(P1, P2);
6014 if (!Better1 && !Better2)
6019 auto *TST1 = cast<TemplateSpecializationType>(T1);
6020 auto *TST2 = cast<TemplateSpecializationType>(T2);
6023 assert(TST1->template_arguments().size() ==
6024 TST2->template_arguments().size());
6029 bool IsPackExpansion1 =
6031 bool IsPackExpansion2 =
6033 if (PackSize1 != PackSize2 && IsPackExpansion1 != IsPackExpansion2) {
6034 if (PackSize1 > PackSize2 && IsPackExpansion1)
6035 return GetP2()(P1, P2);
6036 if (PackSize1 < PackSize2 && IsPackExpansion2)
6065 if (!TemplateArgumentListAreEqual(S.
getASTContext())(P1, P2))
6069 P1->getAssociatedConstraints(AC1);
6070 P2->getAssociatedConstraints(AC2);
6071 bool AtLeastAsConstrained1, AtLeastAsConstrained2;
6073 (IsMoreSpecialThanPrimaryCheck && !AtLeastAsConstrained1))
6077 if (AtLeastAsConstrained1 == AtLeastAsConstrained2)
6079 return AtLeastAsConstrained1 ? P1 : GetP2()(P1, P2);
6114 "the partial specializations being compared should specialize"
6115 " the same template.");
6177 for (
unsigned I = 0, N =
P->size(); I != N; ++I) {
6186 Arg,
QualType(),
P->getParam(I)->getLocation()));
6205 Deduced.resize(A->
size());
6220 IsDeduced ? PackFold::ArgumentToParameter
6221 : PackFold::ParameterToArgument) !=
6231 bool AtLeastAsSpecialized;
6233 AtLeastAsSpecialized =
6234 ::FinishTemplateArgumentDeduction(
6235 *this, AArg, true, PArgs, Deduced, Info) ==
6236 TemplateDeductionResult::Success;
6238 return AtLeastAsSpecialized;
6242struct MarkUsedTemplateParameterVisitor :
6244 llvm::SmallBitVector &
Used;
6247 MarkUsedTemplateParameterVisitor(llvm::SmallBitVector &
Used,
6252 if (
T->getDepth() == Depth)
6253 Used[
T->getIndex()] =
true;
6258 if (
auto *TTP = llvm::dyn_cast_or_null<TemplateTemplateParmDecl>(
6260 if (TTP->getDepth() == Depth)
6261 Used[TTP->getIndex()] =
true;
6268 if (
auto *NTTP = dyn_cast<NonTypeTemplateParmDecl>(
E->getDecl()))
6269 if (NTTP->getDepth() == Depth)
6270 Used[NTTP->getIndex()] =
true;
6283 llvm::SmallBitVector &
Used) {
6285 MarkUsedTemplateParameterVisitor(
Used, Depth)
6286 .TraverseStmt(
const_cast<Expr *
>(
E));
6292 E = Expansion->getPattern();
6314 llvm::SmallBitVector &
Used) {
6321 OnlyDeduced, Depth,
Used);
6331 llvm::SmallBitVector &
Used) {
6332 if (
TemplateDecl *Template = Name.getAsTemplateDecl()) {
6334 = dyn_cast<TemplateTemplateParmDecl>(Template)) {
6335 if (TTP->getDepth() == Depth)
6336 Used[TTP->getIndex()] =
true;
6355 llvm::SmallBitVector &
Used) {
6373 case Type::BlockPointer:
6381 case Type::LValueReference:
6382 case Type::RValueReference:
6390 case Type::MemberPointer: {
6395 OnlyDeduced, Depth,
Used);
6399 case Type::DependentSizedArray:
6401 cast<DependentSizedArrayType>(
T)->getSizeExpr(),
6402 OnlyDeduced, Depth,
Used);
6406 case Type::ConstantArray:
6407 case Type::IncompleteArray:
6408 case Type::ArrayParameter:
6410 cast<ArrayType>(
T)->getElementType(),
6411 OnlyDeduced, Depth,
Used);
6414 case Type::ExtVector:
6416 cast<VectorType>(
T)->getElementType(),
6417 OnlyDeduced, Depth,
Used);
6420 case Type::DependentVector: {
6421 const auto *VecType = cast<DependentVectorType>(
T);
6428 case Type::DependentSizedExtVector: {
6430 = cast<DependentSizedExtVectorType>(
T);
6438 case Type::DependentAddressSpace: {
6440 cast<DependentAddressSpaceType>(
T);
6442 OnlyDeduced, Depth,
Used);
6445 OnlyDeduced, Depth,
Used);
6449 case Type::ConstantMatrix: {
6456 case Type::DependentSizedMatrix: {
6467 case Type::FunctionProto: {
6471 for (
unsigned I = 0, N = Proto->
getNumParams(); I != N; ++I) {
6476 if (!OnlyDeduced || I + 1 == N ||
6494 case Type::TemplateTypeParm: {
6501 case Type::SubstTemplateTypeParmPack: {
6503 = cast<SubstTemplateTypeParmPackType>(
T);
6507 OnlyDeduced, Depth,
Used);
6511 case Type::InjectedClassName:
6512 T = cast<InjectedClassNameType>(
T)->getInjectedSpecializationType();
6515 case Type::TemplateSpecialization: {
6517 = cast<TemplateSpecializationType>(
T);
6537 cast<ComplexType>(
T)->getElementType(),
6538 OnlyDeduced, Depth,
Used);
6544 cast<AtomicType>(
T)->getValueType(),
6545 OnlyDeduced, Depth,
Used);
6548 case Type::DependentName:
6551 cast<DependentNameType>(
T)->getQualifier(),
6552 OnlyDeduced, Depth,
Used);
6555 case Type::DependentTemplateSpecialization: {
6569 = cast<DependentTemplateSpecializationType>(
T);
6572 OnlyDeduced, Depth,
Used);
6582 OnlyDeduced, Depth,
Used);
6585 case Type::TypeOfExpr:
6588 cast<TypeOfExprType>(
T)->getUnderlyingExpr(),
6589 OnlyDeduced, Depth,
Used);
6592 case Type::Decltype:
6595 cast<DecltypeType>(
T)->getUnderlyingExpr(),
6596 OnlyDeduced, Depth,
Used);
6599 case Type::PackIndexing:
6602 OnlyDeduced, Depth,
Used);
6604 OnlyDeduced, Depth,
Used);
6608 case Type::UnaryTransform:
6612 OnlyDeduced, Depth,
Used);
6615 case Type::PackExpansion:
6617 cast<PackExpansionType>(
T)->getPattern(),
6618 OnlyDeduced, Depth,
Used);
6622 case Type::DeducedTemplateSpecialization:
6624 cast<DeducedType>(
T)->getDeducedType(),
6625 OnlyDeduced, Depth,
Used);
6627 case Type::DependentBitInt:
6629 cast<DependentBitIntType>(
T)->getNumBitsExpr(),
6630 OnlyDeduced, Depth,
Used);
6635 case Type::VariableArray:
6636 case Type::FunctionNoProto:
6639 case Type::ObjCInterface:
6640 case Type::ObjCObject:
6641 case Type::ObjCObjectPointer:
6642 case Type::UnresolvedUsing:
6645#define TYPE(Class, Base)
6646#define ABSTRACT_TYPE(Class, Base)
6647#define DEPENDENT_TYPE(Class, Base)
6648#define NON_CANONICAL_TYPE(Class, Base) case Type::Class:
6649#include "clang/AST/TypeNodes.inc"
6661 llvm::SmallBitVector &
Used) {
6679 OnlyDeduced, Depth,
Used);
6697 llvm::SmallBitVector &
Used) {
6703 bool OnlyDeduced,
unsigned Depth,
6704 llvm::SmallBitVector &
Used) {
6713 for (
unsigned I = 0, N = TemplateArgs.
size(); I != N; ++I)
6720 llvm::SmallBitVector &Deduced) {
6724 Deduced.resize(TemplateParams->
size());
6727 for (
unsigned I = 0, N =
Function->getNumParams(); I != N; ++I)
6729 true, TemplateParams->
getDepth(), Deduced);
6740 llvm::SmallBitVector Deduced(TemplateParams->
size());
6744 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)
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 const TemplateSpecializationType * getLastTemplateSpecType(QualType QT)
Deduce the template arguments by comparing the template parameter type (which is a template-id) with ...
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.
static QualType getPointeeType(const MemRegion *R)
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.
TemplateName getQualifiedTemplateName(NestedNameSpecifier *NNS, bool TemplateKeyword, TemplateName Template) const
Retrieve the template name that represents a qualified template name such as std::vector.
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.
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.
QualType getUnqualifiedArrayType(QualType T, Qualifiers &Quals) const
Return this type as a completely-unqualified array type, capturing the qualifiers in Quals.
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.
Represents a type that was referred to using an elaborated type keyword, e.g., struct S,...
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.
Classification Classify(ASTContext &Ctx) const
Classify - Classify this expression according to the C++11 expression taxonomy.
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
static ImplicitConceptSpecializationDecl * Create(const ASTContext &C, DeclContext *DC, SourceLocation SL, ArrayRef< TemplateArgument > ConvertedArgs)
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.
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 as written in source code.
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...
ExpressionEvaluationContextRecord & parentEvaluationContext()
@ 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...
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.
void DiagnoseAutoDeductionFailure(const VarDecl *VDecl, const Expr *Init)
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.
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.