45#include "llvm/ADT/APInt.h"
46#include "llvm/ADT/APSInt.h"
47#include "llvm/ADT/ArrayRef.h"
48#include "llvm/ADT/DenseMap.h"
49#include "llvm/ADT/FoldingSet.h"
50#include "llvm/ADT/SmallBitVector.h"
51#include "llvm/ADT/SmallPtrSet.h"
52#include "llvm/ADT/SmallVector.h"
53#include "llvm/Support/Casting.h"
54#include "llvm/Support/Compiler.h"
55#include "llvm/Support/ErrorHandling.h"
113using namespace clang;
119 if (Y.getBitWidth() >
X.getBitWidth())
120 X =
X.extend(Y.getBitWidth());
121 else if (Y.getBitWidth() <
X.getBitWidth())
122 Y = Y.extend(
X.getBitWidth());
125 if (
X.isSigned() != Y.isSigned()) {
127 if ((Y.isSigned() && Y.isNegative()) || (
X.isSigned() &&
X.isNegative()))
146 bool *HasDeducedAnyParam);
160 bool OnlyDeduced,
unsigned Depth,
161 llvm::SmallBitVector &
Used);
164 bool OnlyDeduced,
unsigned Level,
165 llvm::SmallBitVector &Deduced);
175 if (
const auto *IC = dyn_cast<ImplicitCastExpr>(
E))
176 E = IC->getSubExpr();
177 else if (
const auto *CE = dyn_cast<ConstantExpr>(
E))
178 E = CE->getSubExpr();
179 else if (
const auto *Subst = dyn_cast<SubstNonTypeTemplateParmExpr>(
E))
180 E = Subst->getReplacement();
181 else if (
const auto *CCE = dyn_cast<CXXConstructExpr>(
E)) {
183 if (CCE->getParenOrBraceRange().isValid())
186 assert(CCE->getNumArgs() >= 1 &&
"implicit construct expr should have 1 arg");
192 if (
const auto *DRE = dyn_cast<DeclRefExpr>(
E))
193 if (
const auto *NTTP = dyn_cast<NonTypeTemplateParmDecl>(DRE->getDecl()))
194 if (NTTP->getDepth() == Depth)
209 X = NX->getUnderlyingDecl();
210 if (
NamedDecl *NY = dyn_cast<NamedDecl>(Y))
211 Y = NY->getUnderlyingDecl();
224 bool AggregateCandidateDeduction =
false) {
237 QualType XType =
X.getNonTypeTemplateArgumentType();
245 switch (
X.getKind()) {
247 llvm_unreachable(
"Non-deduced template arguments handled above");
254 X.wasDeducedFromArrayBound() ||
260 return X.wasDeducedFromArrayBound() ? Y :
X;
274 return X.wasDeducedFromArrayBound() ? Y :
X;
283 X.structurallyEquals(Y)))
311 llvm::FoldingSetNodeID ID1, ID2;
312 X.getAsExpr()->Profile(ID1, Context,
true);
315 return X.wasDeducedFromArrayBound() ? Y :
X;
322 assert(!
X.wasDeducedFromArrayBound());
335 X.getParamTypeForDecl());
372 (!AggregateCandidateDeduction &&
X.pack_size() != Y.
pack_size()))
384 if (Merged.isNull() && !(XA->isNull() && YA->isNull()))
386 NewPack.push_back(Merged);
389 NewPack.push_back(*XA);
399 llvm_unreachable(
"Invalid TemplateArgument Kind!");
412 bool *HasDeducedAnyParam) {
414 "deducing non-type template argument with wrong depth");
418 if (Result.isNull()) {
422 return TemplateDeductionResult::Inconsistent;
427 return TemplateDeductionResult::Success;
434 return TemplateDeductionResult::Success;
439 if (
auto *Expansion = dyn_cast<PackExpansionType>(ParamType))
440 ParamType = Expansion->getPattern();
454 S, TemplateParams, ParamType, ValueType, Info, Deduced,
468 bool *HasDeducedAnyParam) {
470 S, TemplateParams, NTTP,
472 DeducedFromArrayBound),
484 bool *HasDeducedAnyParam) {
506 bool *HasDeducedAnyParam) {
522 bool *HasDeducedAnyParam) {
534 bool *HasDeducedAnyParam) {
539 return TemplateDeductionResult::Success;
542 if (
auto *TempParam = dyn_cast<TemplateTemplateParmDecl>(ParamDecl)) {
545 return TemplateDeductionResult::Success;
549 unsigned StartPos = 0;
566 Arg, {StartPos, DefaultArguments.drop_front(StartPos)}))
570 S.
Context, Deduced[TempParam->getIndex()], NewDeduced);
571 if (Result.isNull()) {
572 Info.
Param = TempParam;
573 Info.
FirstArg = Deduced[TempParam->getIndex()];
575 return TemplateDeductionResult::Inconsistent;
578 Deduced[TempParam->getIndex()] = Result;
579 if (HasDeducedAnyParam)
580 *HasDeducedAnyParam =
true;
581 return TemplateDeductionResult::Success;
587 return TemplateDeductionResult::Success;
592 return TemplateDeductionResult::NonDeducedMismatch;
618 assert(TST &&
"Expected a TemplateSpecializationType");
630 bool *HasDeducedAnyParam) {
633 UP = IP->getInjectedSpecializationType();
641 return TemplateDeductionResult::Success;
648 ->template_arguments();
651 std::optional<NestedNameSpecifier *> NNS;
654 NNS = Elaborated->getQualifier();
656 UA = Injected->getInjectedSpecializationType();
667 return TemplateDeductionResult::Success;
674 ->template_arguments();
681 Result != TemplateDeductionResult::Success)
688 S, TemplateParams, PResolved, AResolved, Info, Deduced,
698 RA ? dyn_cast<ClassTemplateSpecializationDecl>(RA->getDecl()) :
nullptr;
702 return TemplateDeductionResult::NonDeducedMismatch;
708 *NNS,
false,
TemplateName(SA->getSpecializedTemplate()));
712 S, TemplateParams, TNP, TNA, Info,
714 Deduced, HasDeducedAnyParam);
715 Result != TemplateDeductionResult::Success)
720 SA->getTemplateArgs().asArray(), Info, Deduced,
730 case Type::TypeOfExpr:
732 case Type::DependentName:
734 case Type::PackIndexing:
735 case Type::UnresolvedUsing:
736 case Type::TemplateTypeParm:
740 case Type::ConstantArray:
741 case Type::IncompleteArray:
742 case Type::VariableArray:
743 case Type::DependentSizedArray:
745 cast<ArrayType>(
T)->getElementType().getTypePtr());
794class PackDeductionScope {
802 bool DeducePackIfNotAlreadyDeduced =
false,
803 bool FinishingDeduction =
false)
804 : S(S), TemplateParams(TemplateParams), Deduced(Deduced), Info(Info),
805 DeducePackIfNotAlreadyDeduced(DeducePackIfNotAlreadyDeduced),
806 FinishingDeduction(FinishingDeduction) {
807 unsigned NumNamedPacks = addPacks(Pattern);
808 finishConstruction(NumNamedPacks);
815 : S(S), TemplateParams(TemplateParams), Deduced(Deduced), Info(Info) {
817 finishConstruction(1);
821 void addPack(
unsigned Index) {
824 DeducedFromEarlierParameter = !Deduced[Index].isNull();
826 if (!FinishingDeduction) {
827 Pack.Saved = Deduced[Index];
834 if (std::optional<unsigned> ExpandedPackExpansions =
836 FixedNumExpansions = ExpandedPackExpansions;
838 Packs.push_back(Pack);
844 llvm::SmallBitVector SawIndices(TemplateParams->size());
847 auto AddPack = [&](
unsigned Index) {
848 if (SawIndices[Index])
850 SawIndices[Index] =
true;
857 if (
auto *NTTP = dyn_cast<NonTypeTemplateParmDecl>(
858 TemplateParams->getParam(Index))) {
859 if (!NTTP->isExpandedParameterPack())
860 if (
auto *Expansion = dyn_cast<PackExpansionType>(NTTP->getType()))
861 ExtraDeductions.push_back(Expansion->getPattern());
870 for (
unsigned I = 0, N = Unexpanded.size(); I != N; ++I) {
871 unsigned Depth, Index;
873 if (Depth == Info.getDeducedDepth())
880 assert(!Packs.empty() &&
"Pack expansion without unexpanded packs?");
882 unsigned NumNamedPacks = Packs.size();
886 while (!ExtraDeductions.empty())
887 Collect(ExtraDeductions.pop_back_val());
889 return NumNamedPacks;
892 void finishConstruction(
unsigned NumNamedPacks) {
895 unsigned NumPartialPackArgs = 0;
896 std::pair<unsigned, unsigned> PartialPackDepthIndex(-1u, -1u);
898 if (
auto *Partial =
Scope->getPartiallySubstitutedPack(
899 &PartialPackArgs, &NumPartialPackArgs))
905 bool IsExpanded =
true;
906 for (
unsigned I = 0; I != NumNamedPacks; ++I) {
907 if (Packs[I].Index >= Info.getNumExplicitArgs()) {
909 IsPartiallyExpanded =
false;
912 if (PartialPackDepthIndex ==
913 std::make_pair(Info.getDeducedDepth(), Packs[I].Index)) {
914 IsPartiallyExpanded =
true;
922 if (IsPartiallyExpanded)
923 PackElements += NumPartialPackArgs;
924 else if (IsExpanded && FixedNumExpansions)
925 PackElements += *FixedNumExpansions;
927 for (
auto &Pack : Packs) {
928 if (Info.PendingDeducedPacks.size() > Pack.Index)
929 Pack.Outer = Info.PendingDeducedPacks[Pack.Index];
931 Info.PendingDeducedPacks.resize(Pack.Index + 1);
932 Info.PendingDeducedPacks[Pack.Index] = &Pack;
934 if (PartialPackDepthIndex ==
935 std::make_pair(Info.getDeducedDepth(), Pack.Index)) {
936 Pack.New.append(PartialPackArgs, PartialPackArgs + NumPartialPackArgs);
945 if (!FinishingDeduction && !IsPartiallyExpanded)
946 Deduced[Pack.Index] = Pack.New[PackElements];
952 ~PackDeductionScope() {
953 for (
auto &Pack : Packs)
954 Info.PendingDeducedPacks[Pack.Index] = Pack.Outer;
958 std::optional<unsigned> getSavedPackSizeIfAllEqual()
const {
959 unsigned PackSize = Packs[0].Saved.pack_size();
961 if (std::all_of(Packs.begin() + 1, Packs.end(), [&PackSize](
const auto &
P) {
962 return P.Saved.pack_size() == PackSize;
970 bool isDeducedFromEarlierParameter()
const {
971 return DeducedFromEarlierParameter;
976 bool isPartiallyExpanded() {
return IsPartiallyExpanded; }
981 bool hasFixedArity() {
return FixedNumExpansions.has_value(); }
986 bool hasNextElement() {
987 return !FixedNumExpansions || *FixedNumExpansions > PackElements;
991 void nextPackElement() {
995 if (!FinishingDeduction) {
996 for (
auto &Pack : Packs) {
998 if (!Pack.New.empty() || !DeducedArg.
isNull()) {
999 while (Pack.New.size() < PackElements)
1001 if (Pack.New.size() == PackElements)
1002 Pack.New.push_back(DeducedArg);
1004 Pack.New[PackElements] = DeducedArg;
1005 DeducedArg = Pack.New.size() > PackElements + 1
1006 ? Pack.New[PackElements + 1]
1018 if (FinishingDeduction)
1019 return TemplateDeductionResult::Success;
1022 for (
auto &Pack : Packs) {
1024 if (!FinishingDeduction)
1025 Deduced[Pack.Index] = Pack.Saved;
1040 Pack.New.resize(PackElements);
1044 if (Pack.New.empty()) {
1050 std::copy(Pack.New.begin(), Pack.New.end(), ArgumentPack);
1058 Pack.New[0].wasDeducedFromArrayBound());
1064 if (Pack.Outer->DeferredDeduction.isNull()) {
1067 Pack.Outer->DeferredDeduction = NewPack;
1070 Loc = &Pack.Outer->DeferredDeduction;
1072 Loc = &Deduced[Pack.Index];
1078 S.
Context, OldPack, NewPack, DeducePackIfNotAlreadyDeduced);
1080 Info.AggregateDeductionCandidateHasMismatchedArity =
1086 if (!Result.isNull() && !Pack.DeferredDeduction.isNull()) {
1088 NewPack = Pack.DeferredDeduction;
1092 NamedDecl *Param = TemplateParams->getParam(Pack.Index);
1093 if (Result.isNull()) {
1095 Info.FirstArg = OldPack;
1096 Info.SecondArg = NewPack;
1097 return TemplateDeductionResult::Inconsistent;
1103 if (*Expansions != PackElements) {
1105 Info.FirstArg = Result;
1106 return TemplateDeductionResult::IncompletePack;
1113 return TemplateDeductionResult::Success;
1121 unsigned PackElements = 0;
1122 bool IsPartiallyExpanded =
false;
1123 bool DeducePackIfNotAlreadyDeduced =
false;
1124 bool DeducedFromEarlierParameter =
false;
1125 bool FinishingDeduction =
false;
1127 std::optional<unsigned> FixedNumExpansions;
1139 bool FinishingDeduction,
T &&DeductFunc) {
1149 = dyn_cast<PackExpansionType>(Params[
ParamIdx]);
1154 if (ArgIdx >= Args.size())
1155 return TemplateDeductionResult::MiscellaneousDeductionFailure;
1157 if (isa<PackExpansionType>(Args[ArgIdx])) {
1162 return TemplateDeductionResult::MiscellaneousDeductionFailure;
1166 DeductFunc(S, TemplateParams,
ParamIdx, ArgIdx,
1167 Params[
ParamIdx].getUnqualifiedType(),
1168 Args[ArgIdx].getUnqualifiedType(), Info, Deduced, POK);
1169 Result != TemplateDeductionResult::Success)
1184 PackDeductionScope PackScope(S, TemplateParams, Deduced, Info, Pattern,
1186 FinishingDeduction);
1190 if (
ParamIdx + 1 == Params.size() || PackScope.hasFixedArity()) {
1191 for (; ArgIdx < Args.size() && PackScope.hasNextElement(); ++ArgIdx) {
1194 S, TemplateParams,
ParamIdx, ArgIdx,
1196 Info, Deduced, POK);
1197 Result != TemplateDeductionResult::Success)
1199 PackScope.nextPackElement();
1220 if (NumExpansions && !PackScope.isPartiallyExpanded()) {
1221 for (
unsigned I = 0; I != *NumExpansions && ArgIdx < Args.size();
1223 PackScope.nextPackElement();
1229 if (
auto Result = PackScope.finish();
1230 Result != TemplateDeductionResult::Success)
1241 isa<PackExpansionType>(Args[ArgIdx]))
1242 return TemplateDeductionResult::Success;
1245 if (ArgIdx < Args.size())
1246 return TemplateDeductionResult::MiscellaneousDeductionFailure;
1248 return TemplateDeductionResult::Success;
1288 llvm::SmallBitVector *HasDeducedParam) {
1289 return ::DeduceForEachType(
1290 S, TemplateParams, Params, Args, Info, Deduced, POK,
1296 bool HasDeducedAnyParamCopy =
false;
1298 S, TemplateParams,
P, A, Info, Deduced, TDF, POK,
1299 false, &HasDeducedAnyParamCopy);
1300 if (HasDeducedAnyParam && HasDeducedAnyParamCopy)
1301 *HasDeducedAnyParam =
true;
1302 if (HasDeducedParam && HasDeducedAnyParamCopy)
1303 (*HasDeducedParam)[
ParamIdx] =
true;
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;
1404 bool *HasDeducedAnyParam) {
1430 bool HasDeducedAnyParam;
1432 llvm::MapVector<const CXXRecordDecl *, MatchValue> Matches;
1437 assert(
T->
isRecordType() &&
"Base class that isn't a record?");
1439 ToVisit.push_back(
T);
1448 while (!ToVisit.empty()) {
1449 QualType NextT = ToVisit.pop_back_val();
1454 bool HasDeducedAnyParamCopy =
false;
1457 &HasDeducedAnyParamCopy);
1463 Matches.insert({RD, {DeducedCopy, HasDeducedAnyParamCopy}});
1474 if (Matches.size() > 1) {
1476 for (
const auto &Match : Matches)
1477 AddBases(Match.first);
1481 while (Matches.size() > 1 && !ToVisit.empty()) {
1482 const CXXRecordDecl *RD = ToVisit.pop_back_val()->getAsCXXRecordDecl();
1491 if (Matches.empty())
1493 if (Matches.size() > 1)
1496 std::swap(Matches.front().second.Deduced, Deduced);
1497 if (
bool HasDeducedAnyParamCopy = Matches.front().second.HasDeducedAnyParam;
1498 HasDeducedAnyParamCopy && HasDeducedAnyParam)
1499 *HasDeducedAnyParam = HasDeducedAnyParamCopy;
1508 return std::min(POK, PartialOrderingKind::NonCall);
1540 bool *HasDeducedAnyParam) {
1544 if (
const auto *AExp = dyn_cast<PackExpansionType>(A))
1545 A = AExp->getPattern();
1548 if (POK == PartialOrderingKind::Call) {
1626 TDF &= ~TDF_TopLevelParameterTypeList;
1629 P =
P->getPointeeType();
1646 unsigned Index = TTP->getIndex();
1661 Info.
Param = cast<TemplateTypeParmDecl>(TemplateParams->
getParam(Index));
1673 "saw template type parameter with wrong depth");
1675 "Unresolved overloaded function");
1695 Info.
Param = cast<TemplateTypeParmDecl>(TemplateParams->
getParam(Index));
1715 Info.
Param = cast<TemplateTypeParmDecl>(TemplateParams->
getParam(Index));
1722 if (HasDeducedAnyParam)
1723 *HasDeducedAnyParam =
true;
1763 if (!
P->isDependentType()) {
1779 switch (
P.getCanonicalType()->getTypeClass()) {
1781#define NON_CANONICAL_TYPE(Class, Base) \
1782 case Type::Class: llvm_unreachable("deducing non-canonical type: " #Class);
1783#define TYPE(Class, Base)
1784#include "clang/AST/TypeNodes.inc"
1786 case Type::TemplateTypeParm:
1787 case Type::SubstTemplateTypeParmPack:
1788 llvm_unreachable(
"Type nodes handled above");
1796 if (
P->isDependentType())
1800 case Type::VariableArray:
1802 case Type::FunctionNoProto:
1805 case Type::ObjCObject:
1806 case Type::ObjCInterface:
1807 case Type::ObjCObjectPointer:
1817 case Type::Complex: {
1822 S, TemplateParams, CP->getElementType(), CA->getElementType(), Info,
1824 false, HasDeducedAnyParam);
1828 case Type::Atomic: {
1833 S, TemplateParams, PA->getValueType(), AA->getValueType(), Info,
1835 false, HasDeducedAnyParam);
1839 case Type::Pointer: {
1850 PointeeType, Info, Deduced,
1853 false, HasDeducedAnyParam);
1857 case Type::LValueReference: {
1864 S, TemplateParams, RP->getPointeeType(), RA->getPointeeType(), Info,
1866 false, HasDeducedAnyParam);
1870 case Type::RValueReference: {
1877 S, TemplateParams, RP->getPointeeType(), RA->getPointeeType(), Info,
1879 false, HasDeducedAnyParam);
1883 case Type::IncompleteArray: {
1889 assert(IAP &&
"Template parameter not of incomplete array type");
1892 S, TemplateParams, IAP->getElementType(), IAA->getElementType(), Info,
1895 false, HasDeducedAnyParam);
1899 case Type::ConstantArray: {
1903 if (!CAA || CAA->getSize() != CAP->getSize())
1907 S, TemplateParams, CAP->getElementType(), CAA->getElementType(), Info,
1910 false, HasDeducedAnyParam);
1914 case Type::DependentSizedArray: {
1923 S, TemplateParams, DAP->getElementType(), AA->getElementType(),
1926 false, HasDeducedAnyParam);
1939 "saw non-type template parameter with wrong depth");
1940 if (
const auto *CAA = dyn_cast<ConstantArrayType>(AA)) {
1941 llvm::APSInt Size(CAA->getSize());
1944 true, Info, POK != PartialOrderingKind::None,
1945 Deduced, HasDeducedAnyParam);
1947 if (
const auto *DAA = dyn_cast<DependentSizedArrayType>(AA))
1948 if (DAA->getSizeExpr())
1950 S, TemplateParams, NTTP, DAA->getSizeExpr(), Info,
1951 POK != PartialOrderingKind::None, Deduced, HasDeducedAnyParam);
1960 case Type::FunctionProto: {
1966 if (FPP->getMethodQuals() != FPA->getMethodQuals() ||
1967 FPP->getRefQualifier() != FPA->getRefQualifier() ||
1968 FPP->isVariadic() != FPA->isVariadic())
1973 S, TemplateParams, FPP->getReturnType(), FPA->getReturnType(),
1975 false, HasDeducedAnyParam);
1981 S, TemplateParams, FPP->param_types(), FPA->param_types(), Info,
1994 Expr *NoexceptExpr = FPP->getNoexceptExpr();
1999 "saw non-type template parameter with wrong depth");
2001 llvm::APSInt Noexcept(1);
2002 switch (FPA->canThrow()) {
2013 POK != PartialOrderingKind::None, Deduced, HasDeducedAnyParam);
2016 if (
Expr *ArgNoexceptExpr = FPA->getNoexceptExpr())
2018 S, TemplateParams, NTTP, ArgNoexceptExpr, Info,
2019 POK != PartialOrderingKind::None, Deduced, HasDeducedAnyParam);
2032 case Type::InjectedClassName:
2041 case Type::TemplateSpecialization: {
2046 POK != PartialOrderingKind::None,
2047 Deduced, HasDeducedAnyParam);
2053 S, TemplateParams,
P, A, Info, POK != PartialOrderingKind::None,
2054 Deduced, HasDeducedAnyParam);
2069 Deduced = DeducedOrig;
2073 POK != PartialOrderingKind::None,
2074 Deduced, HasDeducedAnyParam);
2088 case Type::MemberPointer: {
2105 S, TemplateParams, PPT, APT, Info, Deduced, SubTDF,
2107 false, HasDeducedAnyParam);
2111 S, TemplateParams,
QualType(MPP->getClass(), 0),
2112 QualType(MPA->getClass(), 0), Info, Deduced, SubTDF,
2114 false, HasDeducedAnyParam);
2122 case Type::BlockPointer: {
2128 S, TemplateParams, BPP->getPointeeType(), BPA->getPointeeType(), Info,
2130 false, HasDeducedAnyParam);
2136 case Type::ExtVector: {
2141 if (VP->getNumElements() != VA->getNumElements())
2143 ElementType = VA->getElementType();
2148 ElementType = VA->getElementType();
2154 S, TemplateParams, VP->getElementType(), ElementType, Info, Deduced,
2156 false, HasDeducedAnyParam);
2159 case Type::DependentVector: {
2165 S, TemplateParams, VP->getElementType(), VA->getElementType(),
2167 false, HasDeducedAnyParam);
2178 ArgSize = VA->getNumElements();
2184 Info, POK != PartialOrderingKind::None, Deduced,
2185 HasDeducedAnyParam);
2191 S, TemplateParams, VP->getElementType(), VA->getElementType(),
2193 false, HasDeducedAnyParam);
2204 S, TemplateParams, NTTP, VA->getSizeExpr(), Info,
2205 POK != PartialOrderingKind::None, Deduced, HasDeducedAnyParam);
2214 case Type::DependentSizedExtVector: {
2220 S, TemplateParams, VP->getElementType(), VA->getElementType(),
2222 false, HasDeducedAnyParam);
2233 ArgSize = VA->getNumElements();
2238 S, TemplateParams, NTTP, ArgSize, S.
Context.
IntTy,
true, Info,
2239 POK != PartialOrderingKind::None, Deduced, HasDeducedAnyParam);
2245 S, TemplateParams, VP->getElementType(), VA->getElementType(),
2247 false, HasDeducedAnyParam);
2258 S, TemplateParams, NTTP, VA->getSizeExpr(), Info,
2259 POK != PartialOrderingKind::None, Deduced, HasDeducedAnyParam);
2269 case Type::ConstantMatrix: {
2276 if (MP->getNumRows() != MA->getNumRows() ||
2277 MP->getNumColumns() != MA->getNumColumns()) {
2282 S, TemplateParams, MP->getElementType(), MA->getElementType(), Info,
2284 false, HasDeducedAnyParam);
2287 case Type::DependentSizedMatrix: {
2297 false, HasDeducedAnyParam);
2302 auto DeduceMatrixArg =
2303 [&S, &Info, &Deduced, &TemplateParams, &HasDeducedAnyParam, POK](
2307 const auto *ACM = dyn_cast<ConstantMatrixType>(A);
2308 const auto *ADM = dyn_cast<DependentSizedMatrixType>(A);
2309 if (!ParamExpr->isValueDependent()) {
2310 std::optional<llvm::APSInt> ParamConst =
2311 ParamExpr->getIntegerConstantExpr(S.
Context);
2316 if ((ACM->*GetArgDimension)() == *ParamConst)
2321 Expr *ArgExpr = (ADM->*GetArgDimensionExpr)();
2322 if (std::optional<llvm::APSInt> ArgConst =
2324 if (*ArgConst == *ParamConst)
2335 llvm::APSInt ArgConst(
2337 ArgConst = (ACM->*GetArgDimension)();
2340 true, Info, POK != PartialOrderingKind::None,
2341 Deduced, HasDeducedAnyParam);
2345 S, TemplateParams, NTTP, (ADM->*GetArgDimensionExpr)(), Info,
2346 POK != PartialOrderingKind::None, Deduced, HasDeducedAnyParam);
2349 if (
auto Result = DeduceMatrixArg(MP->getRowExpr(), MA,
2355 return DeduceMatrixArg(MP->getColumnExpr(), MA,
2363 case Type::DependentAddressSpace: {
2369 S, TemplateParams, ASP->getPointeeType(), ASA->getPointeeType(),
2371 false, HasDeducedAnyParam);
2382 S, TemplateParams, NTTP, ASA->getAddrSpaceExpr(), Info,
2383 POK != PartialOrderingKind::None, Deduced, HasDeducedAnyParam);
2393 S, TemplateParams, ASP->getPointeeType(),
2396 false, HasDeducedAnyParam);
2407 S, TemplateParams, NTTP, ArgAddressSpace, S.
Context.
IntTy,
true,
2408 Info, POK != PartialOrderingKind::None, Deduced,
2409 HasDeducedAnyParam);
2414 case Type::DependentBitInt: {
2418 if (IP->isUnsigned() != IA->isUnsigned())
2427 ArgSize = IA->getNumBits();
2430 S, TemplateParams, NTTP, ArgSize, S.
Context.
IntTy,
true, Info,
2431 POK != PartialOrderingKind::None, Deduced, HasDeducedAnyParam);
2435 if (IP->isUnsigned() != IA->isUnsigned())
2443 case Type::TypeOfExpr:
2445 case Type::DependentName:
2446 case Type::UnresolvedUsing:
2447 case Type::Decltype:
2448 case Type::UnaryTransform:
2449 case Type::DeducedTemplateSpecialization:
2450 case Type::DependentTemplateSpecialization:
2451 case Type::PackExpansion:
2453 case Type::ArrayParameter:
2454 case Type::HLSLAttributedResource:
2458 case Type::PackIndexing: {
2464 false, HasDeducedAnyParam);
2470 llvm_unreachable(
"Invalid Type Class!");
2478 bool *HasDeducedAnyParam) {
2485 switch (
P.getKind()) {
2487 llvm_unreachable(
"Null template argument in parameter list");
2492 S, TemplateParams,
P.getAsType(), A.
getAsType(), Info, Deduced, 0,
2494 : PartialOrderingKind::None,
2495 false, HasDeducedAnyParam);
2507 HasDeducedAnyParam);
2513 llvm_unreachable(
"caller should handle pack expansions");
2561 HasDeducedAnyParam);
2566 Deduced, HasDeducedAnyParam);
2582 llvm_unreachable(
"Unknown template argument kind");
2588 llvm_unreachable(
"Argument packs should be expanded by the caller!");
2591 llvm_unreachable(
"Invalid TemplateArgument Kind!");
2604 if (ArgIdx == Args.size())
2611 assert(ArgIdx == Args.size() - 1 &&
"Pack not at the end of argument list?");
2614 return ArgIdx < Args.size();
2620 bool FoundPackExpansion =
false;
2621 for (
const auto &A : Args) {
2622 if (FoundPackExpansion)
2630 if (A.isPackExpansion())
2631 FoundPackExpansion =
true;
2645 if (
PackFold == PackFold::ArgumentToParameter)
2661 if (!
P.isPackExpansion()) {
2666 return NumberOfArgumentsMustMatch
2673 if (As[ArgIdx].isPackExpansion())
2678 if (
PackFold == PackFold::ArgumentToParameter)
2682 HasDeducedAnyParam);
2701 PackDeductionScope PackScope(S, TemplateParams, Deduced, Info, Pattern);
2707 PackScope.hasNextElement();
2710 if (
PackFold == PackFold::ArgumentToParameter)
2715 HasDeducedAnyParam);
2719 PackScope.nextPackElement();
2724 if (
auto Result = PackScope.finish();
2736 bool NumberOfArgumentsMustMatch) {
2737 return ::DeduceTemplateArguments(
2738 *
this, TemplateParams, Ps, As, Info, Deduced, NumberOfArgumentsMustMatch,
2739 false, PackFold::ParameterToArgument,
2748 bool PackExpansionMatchesPack =
false) {
2751 if (PackExpansionMatchesPack &&
X.isPackExpansion() && !Y.
isPackExpansion())
2752 X =
X.getPackExpansionPattern();
2757 switch (
X.getKind()) {
2759 llvm_unreachable(
"Comparing NULL template argument");
2782 return X.structurallyEquals(Y);
2785 llvm::FoldingSetNodeID XID, YID;
2786 X.getAsExpr()->Profile(XID, Context,
true);
2792 unsigned PackIterationSize =
X.pack_size();
2801 bool XHasMoreArg =
X.pack_size() > Y.
pack_size();
2802 if (!(XHasMoreArg &&
X.pack_elements().back().isPackExpansion()) &&
2803 !(!XHasMoreArg && Y.
pack_elements().back().isPackExpansion()))
2812 for (
unsigned i = 0; i < PackIterationSize; ++i)
2814 PackExpansionMatchesPack))
2820 llvm_unreachable(
"Invalid TemplateArgument Kind!");
2829 llvm_unreachable(
"Can't get a NULL template argument here");
2864 Builder.MakeTrivial(
Context, DTN->getQualifier(),
Loc);
2867 Builder.MakeTrivial(
Context, QTN->getQualifier(),
Loc);
2884 llvm_unreachable(
"Invalid TemplateArgument Kind!");
2902 unsigned ArgumentPackIndex) {
2924 CanonicalPackedArgsBuilder;
2932 "deduced nested pack");
2939 diag::err_template_arg_deduced_incomplete_pack)
2943 if (ConvertArg(InnerArg, SugaredPackedArgsBuilder.size()))
2947 SugaredPackedArgsBuilder.push_back(SugaredOutput.pop_back_val());
2948 CanonicalPackedArgsBuilder.push_back(CanonicalOutput.pop_back_val());
2953 if (SugaredPackedArgsBuilder.empty()) {
2958 if (
auto *NTTP = dyn_cast<NonTypeTemplateParmDecl>(Param)) {
2960 NTTP, SugaredOutput,
2963 S.
SubstType(NTTP->getType(), Args, NTTP->getLocation(),
2964 NTTP->getDeclName()).isNull())
2966 }
else if (
auto *TTP = dyn_cast<TemplateTemplateParmDecl>(Param)) {
2977 SugaredOutput.push_back(
2980 S.
Context, CanonicalPackedArgsBuilder));
2984 return ConvertArg(Arg, 0);
2994template <
typename TemplateDeclT>
2996 Sema &S, TemplateDeclT *Template,
bool IsDeduced,
3002 unsigned NumAlreadyConverted = 0,
bool *IsIncomplete =
nullptr) {
3005 for (
unsigned I = 0, N = TemplateParams->
size(); I != N; ++I) {
3014 PackDeductionScope(S, TemplateParams, Deduced, Info, I).finish();
3019 if (!Deduced[I].isNull()) {
3020 if (I < NumAlreadyConverted) {
3025 CurrentInstantiationScope->getPartiallySubstitutedPack() == Param) {
3028 CurrentInstantiationScope->ResetPartiallySubstitutedPack();
3035 SugaredBuilder.push_back(Deduced[I]);
3036 CanonicalBuilder.push_back(
3045 IsDeduced, SugaredBuilder,
3046 CanonicalBuilder)) {
3064 *IsIncomplete =
true;
3065 SugaredBuilder.push_back({});
3066 CanonicalBuilder.push_back({});
3071 bool HasDefaultArg =
false;
3074 assert(isa<ClassTemplatePartialSpecializationDecl>(Template) ||
3075 isa<VarTemplatePartialSpecializationDecl>(Template));
3084 if (Rec->isLambda())
3085 if (
auto *Method = dyn_cast<CXXMethodDecl>(Rec->getDeclContext())) {
3087 ThisTypeQuals = Method->getMethodQualifiers();
3095 SugaredBuilder, CanonicalBuilder, HasDefaultArg);
3128 if (
auto *DC = dyn_cast<DeclContext>(
D))
3134 static constexpr bool value =
false;
3138 static constexpr bool value =
true;
3142 static constexpr bool value =
true;
3144template <
typename TemplateDeclT>
3159template <
typename TemplateDeclT>
3166 Template->getAssociatedConstraints(AssociatedConstraints);
3168 std::optional<ArrayRef<TemplateArgument>> Innermost;
3172 Innermost = CanonicalDeducedArgs;
3175 Template, Template->getDeclContext(),
false, Innermost,
3199template <
typename T>
3200static std::enable_if_t<IsPartialSpecialization<T>::value,
3203 Sema &S,
T *Partial,
bool IsPartialOrdering,
3219 S, Partial, IsPartialOrdering, Deduced, Info, SugaredBuilder,
3230 Info.
reset(SugaredDeducedArgumentList, CanonicalDeducedArgumentList);
3238 auto *Template = Partial->getSpecializedTemplate();
3240 Partial->getTemplateArgsAsWritten();
3251 if (
ParamIdx >= Partial->getTemplateParameters()->size())
3252 ParamIdx = Partial->getTemplateParameters()->size() - 1;
3255 Partial->getTemplateParameters()->getParam(
ParamIdx));
3257 Info.
FirstArg = (*PartialTemplArgInfo)[ArgIdx].getArgument();
3263 CanonicalConvertedInstArgs;
3265 Template, Partial->getLocation(), InstArgs, {},
false,
3266 SugaredConvertedInstArgs, CanonicalConvertedInstArgs,
3273 for (
unsigned I = 0,
E = TemplateParams->
size(); I !=
E; ++I) {
3276 IsPartialOrdering)) {
3287 if (!IsPartialOrdering) {
3289 S, Partial, SugaredBuilder, CanonicalBuilder, Info);
3318 SugaredBuilder, CanonicalBuilder,
3326 for (
unsigned I = 0,
E = TemplateParams->
size(); I !=
E; ++I) {
3342 S, Template, SugaredBuilder, CanonicalBuilder, Info);
3369 S, TD,
false, Deduced, Info, SugaredBuilder,
3378 CanonicalBuilder, Info);
3388template <
typename T>
3389static std::enable_if_t<IsPartialSpecialization<T>::value,
3394 if (Partial->isInvalidDecl())
3413 Deduced.resize(Partial->getTemplateParameters()->size());
3415 S, Partial->getTemplateParameters(),
3416 Partial->getTemplateArgs().asArray(), TemplateArgs, Info, Deduced,
3418 PackFold::ParameterToArgument,
3434 Result = ::FinishTemplateArgumentDeduction(S, Partial,
3436 TemplateArgs, Deduced, Info);
3445 return ::DeduceTemplateArguments(*
this, Partial, TemplateArgs, Info);
3451 return ::DeduceTemplateArguments(*
this, Partial, TemplateArgs, Info);
3461 if (
const auto *CTD = dyn_cast<ClassTemplateDecl>(TD)) {
3464 }
else if (
const auto *
AliasTemplate = dyn_cast<TypeAliasTemplateDecl>(TD)) {
3465 PType =
AliasTemplate->getTemplatedDecl()->getUnderlyingType();
3467 assert(
false &&
"Expected a class or alias template");
3486 return DeducedResult;
3499 Result = ::FinishTemplateArgumentDeduction(*this, TD, Deduced, Info);
3508 return Spec->getTemplateName().getAsTemplateDecl() !=
nullptr;
3534 if (ExplicitTemplateArgs.
size() == 0) {
3538 ParamTypes.push_back(
P->getType());
3568 ExplicitTemplateArgs, {},
true,
3569 SugaredBuilder, CanonicalBuilder,
3572 unsigned Index = SugaredBuilder.size();
3573 if (Index >= TemplateParams->
size())
3586 CanonicalExplicitArgumentList);
3598 unsigned PartiallySubstitutedPackIndex = -1u;
3599 if (!SugaredBuilder.empty()) {
3602 auto *Param = TemplateParams->
getParam(SugaredBuilder.size() - 1);
3606 if (!Expansions || Arg.
pack_size() < *Expansions) {
3607 PartiallySubstitutedPackIndex = SugaredBuilder.size() - 1;
3616 assert(Proto &&
"Function template does not have a prototype?");
3624 SugaredExplicitArgumentList->
asArray(),
3634 nullptr, ExtParamInfos))
3651 ThisTypeQuals = Method->getMethodQualifiers();
3665 Diag(
Function->getLocation(), diag::err_kern_type_not_void_return)
3676 nullptr, ExtParamInfos))
3700 Deduced.reserve(TemplateParams->
size());
3701 for (
unsigned I = 0, N = SugaredExplicitArgumentList->
size(); I != N; ++I) {
3703 if (I == PartiallySubstitutedPackIndex)
3706 Deduced.push_back(Arg);
3775 if (AQuals == DeducedAQuals) {
3793 bool ObjCLifetimeConversion =
false;
3797 ObjCLifetimeConversion) ||
3843 if (PD->isParameterPack()) {
3844 unsigned NumExpansions =
3846 if (Idx + NumExpansions >
ParamIdx)
3848 Idx += NumExpansions;
3856 llvm_unreachable(
"parameter index would not be produced from template");
3868 return isa<CXXConstructorDecl>(
D)
3869 ? cast<CXXConstructorDecl>(
D)->getExplicitSpecifier()
3870 : cast<CXXConversionDecl>(
D)->getExplicitSpecifier();
3873 isa<CXXConstructorDecl>(
D)
3874 ? cast<CXXConstructorDecl>(
D)->setExplicitSpecifier(ES)
3875 : cast<CXXConversionDecl>(
D)->setExplicitSpecifier(ES);
3886 S, Info.
getLocation(), FunctionTemplate, DeducedArgs,
3907 bool PartialOverloading, llvm::function_ref<
bool()> CheckNonDependent) {
3927 bool IsIncomplete =
false;
3932 NumExplicitlySpecified, PartialOverloading ? &IsIncomplete :
nullptr);
3945 if (CheckNonDependent())
3953 Info.
reset(SugaredDeducedArgumentList, CanonicalDeducedArgumentList);
3991 CanonicalDeducedArgumentList &&
4011 if (!IsIncomplete) {
4027 if (isa<CXXConstructorDecl, CXXConversionDecl>(
Specialization)) {
4036 if (OriginalCallArgs) {
4041 llvm::SmallDenseMap<std::pair<unsigned, QualType>,
QualType> DeducedATypes;
4042 for (
unsigned I = 0, N = OriginalCallArgs->size(); I != N; ++I) {
4046 unsigned ExplicitOffset =
4066 if (CacheEntry.
isNull()) {
4075 DeducedA = CacheEntry;
4090 auto [Pos, Inserted] =
4104 if (S.
getLangOpts().CPlusPlus14 && Fn->getReturnType()->isUndeducedType() &&
4109 if (Method->isImplicitObjectMemberFunction()) {
4130 bool ParamWasReference,
4139 if (ParamWasReference)
4156 nullptr, FailedTSC))
4197 if (ArgType.
isNull())
continue;
4217 Deduced(TemplateParams->
size());
4220 S, TemplateParams, ParamType, ArgType, Info, Deduced, TDF,
4221 PartialOrderingKind::None,
false,
4260 assert(Arg &&
"expected a non-null arg expression");
4262 ParamRefType !=
nullptr, FailedTSC);
4270 assert(Arg &&
"expected a non-null arg expression");
4325 (isa<PointerType>(ParamType) &&
4344 bool DecomposedParam,
unsigned ArgIdx,
unsigned TDF,
4369 ElTy = ArrTy->getElementType();
4379 if (isa<DesignatedInitExpr>(
E))
4386 S, TemplateParams, 0, ElTy,
E->
getType(),
4388 OriginalCallArgs,
true, ArgIdx, TDF);
4396 if (
auto *DependentArrTy = dyn_cast_or_null<DependentSizedArrayType>(ArrTy)) {
4407 S, TemplateParams, NTTP, llvm::APSInt(Size),
T,
4408 true, Info,
false, Deduced,
4427 bool DecomposedParam,
unsigned ArgIdx,
unsigned TDF,
4430 QualType OrigParamType = ParamType;
4435 S, TemplateParams, FirstInnerIndex, ParamType, ArgType,
4436 ArgClassification, Arg, TDF, FailedTSC))
4440 if (
InitListExpr *ILE = dyn_cast_if_present<InitListExpr>(Arg))
4442 Deduced, OriginalCallArgs, ArgIdx, TDF);
4450 OriginalCallArgs.push_back(
4453 S, TemplateParams, ParamType, ArgType, Info, Deduced, TDF,
4454 PartialOrderingKind::None,
false,
4462 bool PartialOverloading,
bool AggregateDeductionCandidate,
4469 unsigned NumParams =
Function->getNumParams();
4470 bool HasExplicitObject =
false;
4471 int ExplicitObjectOffset = 0;
4472 if (
Function->hasCXXExplicitFunctionObjectParameter()) {
4473 HasExplicitObject =
true;
4474 ExplicitObjectOffset = 1;
4483 if (Args.size() <
Function->getMinRequiredExplicitArguments() &&
4484 !PartialOverloading)
4487 PartialOverloading)) {
4489 if (Proto->isTemplateVariadic())
4491 else if (!Proto->isVariadic())
4502 unsigned NumExplicitlySpecified = 0;
4503 if (ExplicitTemplateArgs) {
4506 Result = SubstituteExplicitTemplateArguments(
4507 FunctionTemplate, *ExplicitTemplateArgs, Deduced, ParamTypes, nullptr,
4513 NumExplicitlySpecified = Deduced.size();
4516 for (
unsigned I = 0; I != NumParams; ++I)
4517 ParamTypes.push_back(
Function->getParamDecl(I)->getType());
4523 auto DeduceCallArgument = [&](
QualType ParamType,
unsigned ArgIdx,
4524 bool ExplicitObjectArgument) {
4532 if (ExplicitObjectArgument) {
4535 *
this, TemplateParams, FirstInnerIndex, ParamType, ObjectType,
4536 ObjectClassification,
4537 nullptr, Info, Deduced, OriginalCallArgs,
4543 *
this, TemplateParams, FirstInnerIndex, ParamType,
4544 Args[ArgIdx]->getType(), Args[ArgIdx]->Classify(
getASTContext()),
4545 Args[ArgIdx], Info, Deduced, OriginalCallArgs,
false,
4550 Deduced.resize(TemplateParams->
size());
4552 for (
unsigned ParamIdx = 0, NumParamTypes = ParamTypes.size(), ArgIdx = 0;
4557 dyn_cast<PackExpansionType>(ParamType);
4558 if (!ParamExpansion) {
4560 if (ArgIdx >= Args.size() && !(HasExplicitObject &&
ParamIdx == 0))
4563 ParamTypesForArgChecking.push_back(ParamType);
4565 if (
ParamIdx == 0 && HasExplicitObject) {
4569 if (
auto Result = DeduceCallArgument(ParamType, 0,
4576 if (
auto Result = DeduceCallArgument(ParamType, ArgIdx++,
4584 bool IsTrailingPack =
ParamIdx + 1 == NumParamTypes;
4587 PackDeductionScope PackScope(*
this, TemplateParams, Deduced, Info,
4589 AggregateDeductionCandidate && IsTrailingPack);
4607 if (IsTrailingPack || PackScope.hasFixedArity()) {
4608 for (; ArgIdx < Args.size() && PackScope.hasNextElement();
4609 PackScope.nextPackElement(), ++ArgIdx) {
4610 ParamTypesForArgChecking.push_back(ParamPattern);
4611 if (
auto Result = DeduceCallArgument(ParamPattern, ArgIdx,
4620 std::optional<unsigned> NumExpansions =
4622 if (NumExpansions && !PackScope.isPartiallyExpanded()) {
4623 for (
unsigned I = 0; I != *NumExpansions && ArgIdx < Args.size();
4625 ParamTypesForArgChecking.push_back(ParamPattern);
4628 PackScope.nextPackElement();
4630 }
else if (!IsTrailingPack && !PackScope.isPartiallyExpanded() &&
4631 PackScope.isDeducedFromEarlierParameter()) {
4644 std::optional<unsigned> ArgPosAfterSubstitution =
4645 PackScope.getSavedPackSizeIfAllEqual();
4646 if (!ArgPosAfterSubstitution)
4649 unsigned PackArgEnd = ArgIdx + *ArgPosAfterSubstitution;
4650 for (; ArgIdx < PackArgEnd && ArgIdx < Args.size(); ArgIdx++) {
4651 ParamTypesForArgChecking.push_back(ParamPattern);
4653 DeduceCallArgument(ParamPattern, ArgIdx,
4658 PackScope.nextPackElement();
4665 if (
auto Result = PackScope.finish();
4676 Result = FinishTemplateArgumentDeduction(
4677 FunctionTemplate, Deduced, NumExplicitlySpecified, Specialization, Info,
4678 &OriginalCallArgs, PartialOverloading, [&, CallingCtx]() {
4679 ContextRAII SavedContext(*this, CallingCtx);
4680 return CheckNonDependent(ParamTypesForArgChecking);
4688 bool AdjustExceptionSpec) {
4689 if (ArgFunctionType.
isNull())
4690 return ArgFunctionType;
4695 bool Rebuild =
false;
4698 if (EPI.ExtInfo.getCC() != CC) {
4699 EPI.
ExtInfo = EPI.ExtInfo.withCallingConv(CC);
4703 bool NoReturn = FunctionTypeP->getNoReturnAttr();
4704 if (EPI.ExtInfo.getNoReturn() != NoReturn) {
4705 EPI.ExtInfo = EPI.ExtInfo.withNoReturn(NoReturn);
4709 if (AdjustExceptionSpec && (FunctionTypeP->hasExceptionSpec() ||
4711 EPI.ExceptionSpec = FunctionTypeP->getExtProtoInfo().ExceptionSpec;
4716 return ArgFunctionType;
4726 bool IsAddressOfFunction) {
4738 unsigned NumExplicitlySpecified = 0;
4740 if (ExplicitTemplateArgs) {
4743 Result = SubstituteExplicitTemplateArguments(
4744 FunctionTemplate, *ExplicitTemplateArgs, Deduced, ParamTypes,
4745 &FunctionType, Info);
4750 NumExplicitlySpecified = Deduced.size();
4756 if (!IsAddressOfFunction)
4765 Deduced.resize(TemplateParams->
size());
4769 bool HasDeducedReturnType =
false;
4771 Function->getReturnType()->getContainedAutoType()) {
4773 HasDeducedReturnType =
true;
4781 *
this, TemplateParams,
FunctionType, ArgFunctionType, Info, Deduced,
4782 TDF, PartialOrderingKind::None,
false,
4790 Result = FinishTemplateArgumentDeduction(FunctionTemplate, Deduced,
4791 NumExplicitlySpecified,
4792 Specialization, Info);
4799 if (HasDeducedReturnType && IsAddressOfFunction &&
4820 if (!IsAddressOfFunction) {
4826 if (HasDeducedReturnType) {
4835 if (!ArgFunctionType.
isNull()) {
4837 SpecializationType, ArgFunctionType)
4839 SpecializationType, ArgFunctionType)) {
4860 bool IsReferenceP =
P->isReferenceType();
4867 P = PRef->getPointeeType();
4877 if (!IsReferenceP) {
4879 P =
P.getUnqualifiedType();
4886 assert(!A->
isReferenceType() &&
"Reference types were handled above");
4891 if (
P->isArrayType())
4896 else if (
P->isFunctionType())
4901 P =
P.getUnqualifiedType();
4923 Deduced.resize(TemplateParams->
size());
4952 ParamType, ObjectType, ObjectClassification,
4953 nullptr, Info, Deduced, OriginalCallArgs,
4960 *
this, TemplateParams,
P, A, Info, Deduced, TDF,
4961 PartialOrderingKind::None,
false,
4972 Result = FinishTemplateArgumentDeduction(ConversionTemplate, Deduced, 0,
4973 ConversionSpecialized, Info,
4976 Specialization = cast_or_null<CXXConversionDecl>(ConversionSpecialized);
4985 bool IsAddressOfFunction) {
4988 IsAddressOfFunction);
4992 struct DependentAuto {
bool IsPack; };
4996 class SubstituteDeducedTypeTransform :
4999 bool ReplacementIsPack;
5004 SubstituteDeducedTypeTransform(
Sema &SemaRef, DependentAuto DA)
5006 ReplacementIsPack(DA.IsPack), UseTypeSugar(
true) {}
5008 SubstituteDeducedTypeTransform(
Sema &SemaRef,
QualType Replacement,
5009 bool UseTypeSugar =
true)
5011 Replacement(Replacement), ReplacementIsPack(
false),
5012 UseTypeSugar(UseTypeSugar) {}
5015 assert(isa<TemplateTypeParmType>(Replacement) &&
5016 "unexpected unsugared replacement kind");
5034 return TransformDesugared(TLB, TL);
5036 QualType Result = SemaRef.Context.getAutoType(
5045 QualType TransformDeducedTemplateSpecializationType(
5048 return TransformDesugared(TLB, TL);
5050 QualType Result = SemaRef.Context.getDeducedTemplateSpecializationType(
5052 Replacement, Replacement.isNull());
5070 return inherited::TransformExceptionSpec(
Loc, ESI, Exceptions, Changed);
5078 return TransformType(TLB, TL);
5094 Deduced,
TypeLoc.getNameLoc())));
5095 for (
unsigned I = 0,
C =
TypeLoc.getNumArgs(); I !=
C; ++I)
5101 false, SugaredConverted, CanonicalConverted))
5117 S.
getASTContext(), Concept->getDeclContext(), Concept->getLocation(),
5118 CanonicalConverted));
5125 llvm::raw_string_ostream OS(Buf);
5126 OS <<
"'" << Concept->getName();
5127 if (
TypeLoc.hasExplicitTemplateArgs()) {
5130 Type.getTypeConstraintConcept()->getTemplateParameters());
5134 diag::err_placeholder_constraints_not_satisfied)
5145 bool IgnoreConstraints,
5148 if (
Init->containsErrors())
5161 DependentAuto DependentResult = {
5164 if (!DependentDeduction &&
5166 Init->containsUnexpandedParameterPack())) {
5167 Result = SubstituteDeducedTypeTransform(*
this, DependentResult).Apply(
Type);
5168 assert(!
Result.isNull() &&
"substituting DependentTy can't fail");
5173 auto *String = dyn_cast<StringLiteral>(
Init);
5175 Diag(
Type.getBeginLoc(), diag::ext_c23_auto_non_plain_identifier);
5177 Result = SubstituteDeducedTypeTransform(*
this, DependentResult).Apply(TL);
5178 assert(!
Result.isNull() &&
"substituting DependentTy can't fail");
5184 Diag(
Type.getBeginLoc(), diag::ext_c23_auto_non_plain_identifier);
5187 auto *InitList = dyn_cast<InitListExpr>(
Init);
5189 Diag(
Init->getBeginLoc(), diag::err_auto_init_list_from_c)
5201 if (
Init->isTypeDependent()) {
5203 SubstituteDeducedTypeTransform(*
this, DependentResult).Apply(
Type);
5204 assert(!
Result.isNull() &&
"substituting DependentTy can't fail");
5216 Diag(
Init->getBeginLoc(), diag::err_decltype_auto_initializer_list);
5229 nullptr,
false,
false,
false);
5243 for (
Expr *
Init : InitList->inits()) {
5246 if (isa<DesignatedInitExpr>(
Init))
5249 *
this, TemplateParamsSt.get(), 0, TemplArg,
Init->getType(),
5258 <<
Init->getSourceRange();
5261 return DeductionFailed(TDK);
5266 DeducedFromInitRange =
Init->getSourceRange();
5270 Diag(
Loc, diag::err_auto_bitfield);
5274 SubstituteDeducedTypeTransform(*
this, TemplArg).Apply(
Type);
5275 assert(!FuncParam.
isNull() &&
5276 "substituting template parameter for 'auto' failed");
5278 *
this, TemplateParamsSt.get(), 0, FuncParam,
Init->getType(),
5281 false, 0, 0, FailedTSC);
5283 return DeductionFailed(TDK);
5320 assert((
bool)InitList == OriginalArg.DecomposedParam &&
5321 "decomposed non-init-list in auto deduction?");
5326 return DeductionFailed(TDK);
5336 return SubstituteDeducedTypeTransform(*
this, TypeToReplaceAuto)
5337 .TransformType(TypeWithAuto);
5343 return SubstituteDeducedTypeTransform(*
this, TypeToReplaceAuto)
5344 .TransformType(TypeWithAuto);
5348 return SubstituteDeducedTypeTransform(*
this, DependentAuto{
false})
5349 .TransformType(TypeWithAuto);
5354 return SubstituteDeducedTypeTransform(*
this, DependentAuto{
false})
5355 .TransformType(TypeWithAuto);
5360 return SubstituteDeducedTypeTransform(*
this, TypeToReplaceAuto,
5362 .TransformType(TypeWithAuto);
5367 return SubstituteDeducedTypeTransform(*
this, TypeToReplaceAuto,
5369 .TransformType(TypeWithAuto);
5374 if (isa<InitListExpr>(
Init))
5377 ? diag::err_init_capture_deduction_failure_from_init_list
5378 : diag::err_auto_var_deduction_failure_from_init_list)
5382 VDecl->
isInitCapture() ? diag::err_init_capture_deduction_failure
5383 : diag::err_auto_var_deduction_failure)
5385 <<
Init->getSourceRange();
5417 "failed to deduce lambda return type");
5444 Diag(
Loc, diag::err_auto_fn_used_before_defined) << FD;
5448 return StillUndeduced;
5492 "expected a member function with no explicit object parameter");
5508 bool IsIncompleteSubstitution =
false;
5514 if (InstP.
isNull() && !IsIncompleteSubstitution)
5516 if (!CheckConsistency)
5518 if (IsIncompleteSubstitution)
5523 if (
auto *PA = dyn_cast<PackExpansionType>(A);
5524 PA && !isa<PackExpansionType>(InstP))
5525 A = PA->getPattern();
5547 bool IsIncomplete =
false;
5550 S, FTD,
true, Deduced, Info, SugaredBuilder,
5551 CanonicalBuilder,
nullptr,
5562 Info.
reset(SugaredDeducedArgumentList, CanonicalDeducedArgumentList);
5587 assert(Proto1 && Proto2 &&
"Function templates must have prototypes");
5603 Proto1->
isVariadic() == Proto2->isVariadic() &&
5604 "shouldn't partial order functions with different qualifiers in a "
5605 "context where the function type is used");
5607 assert(Args1.empty() && Args2.empty() &&
5608 "Only call context should have arguments");
5610 Args2 = Proto2->getParamTypes();
5617 bool HasDeducedAnyParamFromReturnType =
false;
5620 S, TemplateParams, Proto2->getReturnType(), Proto1->
getReturnType(),
5621 Info, Deduced,
TDF_None, PartialOrderingKind::Call,
5623 &HasDeducedAnyParamFromReturnType) !=
5628 llvm::SmallBitVector HasDeducedParam;
5630 HasDeducedParam.resize(Args2.size());
5632 TDF_None, PartialOrderingKind::Call,
5634 &HasDeducedParam) !=
5646 bool AtLeastAsSpecialized;
5648 AtLeastAsSpecialized =
5649 ::FinishTemplateArgumentDeduction(
5650 S, FT2, Deduced, Info,
5651 [&](Sema &S, FunctionTemplateDecl *FTD,
5652 ArrayRef<TemplateArgument> DeducedArgs) {
5657 if (TPOC != TPOC_Call) {
5658 if (auto TDR = ::CheckDeductionConsistency(
5659 S, FTD, -1, Proto2->getReturnType(),
5660 Proto1->getReturnType(), DeducedArgs,
5661 HasDeducedAnyParamFromReturnType);
5662 TDR != TemplateDeductionResult::Success)
5666 if (TPOC == TPOC_Conversion)
5667 return TemplateDeductionResult::Success;
5669 return ::DeduceForEachType(
5670 S, TemplateParams, Args2, Args1, Info, Deduced,
5671 PartialOrderingKind::Call, true,
5672 [&](Sema &S, TemplateParameterList *, int ParamIdx,
5673 int ArgIdx, QualType P, QualType A,
5674 TemplateDeductionInfo &Info,
5675 SmallVectorImpl<DeducedTemplateArgument> &Deduced,
5676 PartialOrderingKind) {
5678 ArgIdx -= Args1Offset;
5679 return ::CheckDeductionConsistency(
5680 S, FTD, ArgIdx, P, A, DeducedArgs,
5681 HasDeducedParam[ParamIdx]);
5685 if (!AtLeastAsSpecialized)
5694 unsigned ArgIdx = 0, NumArgs = Deduced.size();
5695 for (; ArgIdx != NumArgs; ++ArgIdx)
5696 if (Deduced[ArgIdx].isNull())
5699 if (ArgIdx == NumArgs) {
5706 llvm::SmallBitVector UsedParameters(TemplateParams->size());
5709 for (
unsigned I = 0, N = Args2.size(); I != N; ++I)
5711 TemplateParams->getDepth(), UsedParameters);
5717 TemplateParams->getDepth(), UsedParameters);
5743 false, TemplateParams->getDepth(), UsedParameters);
5747 for (; ArgIdx != NumArgs; ++ArgIdx)
5750 if (Deduced[ArgIdx].isNull() && UsedParameters[ArgIdx])
5764 bool ShouldConvert1 =
false;
5765 bool ShouldConvert2 =
false;
5766 bool Args1Offset =
false;
5767 bool Args2Offset =
false;
5778 const CXXMethodDecl *Method1 = dyn_cast<CXXMethodDecl>(FD1);
5779 const CXXMethodDecl *Method2 = dyn_cast<CXXMethodDecl>(FD2);
5790 bool NonStaticMethod1 = Method1 && !Method1->isStatic(),
5791 NonStaticMethod2 = Method2 && !Method2->
isStatic();
5794 Params2Begin = Proto2->param_type_begin();
5796 size_t NumComparedArguments = NumCallArguments1;
5799 (NonStaticMethod1 && NonStaticMethod2) ||
5800 (OO !=
OO_None && OO != OO_Call && OO != OO_Subscript)) {
5802 NonStaticMethod1 && !Method1->hasCXXExplicitFunctionObjectParameter();
5805 NumComparedArguments += 1;
5807 if (ShouldConvert1) {
5811 : Proto2->param_type_begin()[0]->isRValueReferenceType();
5814 RawObj1Ty, IsRValRef2);
5815 Args1.push_back(Obj1Ty);
5818 if (ShouldConvert2) {
5821 ? Method1->getRefQualifier() ==
RQ_RValue
5825 RawObj2Ty, IsRValRef1);
5826 Args2.push_back(Obj2Ty);
5830 if (NonStaticMethod1 && Method1->hasCXXExplicitFunctionObjectParameter())
5835 Args1.insert(Args1.end(), Params1Begin, Proto1->
param_type_end());
5836 Args2.insert(Args2.end(), Params2Begin, Proto2->param_type_end());
5841 Args1.resize(std::min(Args1.size(), NumComparedArguments));
5842 Args2.resize(std::min(Args2.size(), NumComparedArguments));
5845 std::reverse(Args2.begin(), Args2.end());
5847 assert(!
Reversed &&
"Only call context could have reversed arguments");
5850 Args2, Args2Offset);
5852 Args1, Args1Offset);
5856 if (Better1 != Better2)
5857 return Better1 ? FT1 : FT2;
5859 if (!Better1 && !Better2)
5868 Param1.reserve(FD1->
param_size() + ShouldConvert1);
5870 Param1.push_back(Obj1Ty);
5872 Param1.push_back(
P->getType());
5875 Param2.reserve(FD2->
param_size() + ShouldConvert2);
5877 Param2.push_back(Obj2Ty);
5879 Param2.push_back(
P->getType());
5881 unsigned NumParams1 = Param1.size();
5882 unsigned NumParams2 = Param2.size();
5888 if (Variadic1 != Variadic2) {
5889 if (Variadic1 && NumParams1 > NumParams2)
5891 if (Variadic2 && NumParams2 > NumParams1)
5897 for (
int i = 0, e = std::min(NumParams1, NumParams2); i < e; ++i) {
5898 QualType T1 = Param1[i].getCanonicalType();
5899 QualType T2 = Param2[i].getCanonicalType();
5900 auto *TST1 = dyn_cast<TemplateSpecializationType>(T1);
5901 auto *TST2 = dyn_cast<TemplateSpecializationType>(T2);
5906 assert(TST1->template_arguments().size() ==
5907 TST2->template_arguments().size());
5912 bool IsPackExpansion1 =
5914 bool IsPackExpansion2 =
5916 if (PackSize1 != PackSize2 && IsPackExpansion1 != IsPackExpansion2) {
5917 if (PackSize1 > PackSize2 && IsPackExpansion1)
5919 if (PackSize1 < PackSize2 && IsPackExpansion2)
5941 if (TPL1->
size() != TPL2->
size() || NumParams1 != NumParams2)
5957 for (
unsigned i = 0; i < NumParams1; ++i)
5973 bool AtLeastAsConstrained1, AtLeastAsConstrained2;
5978 if (AtLeastAsConstrained1 == AtLeastAsConstrained2)
5980 return AtLeastAsConstrained1 ? FT1 : FT2;
5988 bool Complain,
QualType TargetType) {
5989 if (SpecBegin == SpecEnd) {
5997 if (SpecBegin + 1 == SpecEnd)
6004 = cast<FunctionDecl>(*Best)->getPrimaryTemplate();
6005 assert(BestTemplate &&
"Not a function template specialization?");
6008 = cast<FunctionDecl>(*I)->getPrimaryTemplate();
6009 assert(Challenger &&
"Not a function template specialization?");
6014 BestTemplate = Challenger;
6020 bool Ambiguous =
false;
6023 = cast<FunctionDecl>(*I)->getPrimaryTemplate();
6045 const auto *FD = cast<FunctionDecl>(*I);
6047 FD->getPrimaryTemplate()->getTemplateParameters(),
6048 *FD->getTemplateSpecializationArgs());
6049 if (!TargetType.
isNull())
6051 Diag((*I)->getLocation(), PD);
6061 "not for function templates");
6063 isa<CXXConversionDecl>(FD1));
6065 isa<CXXConversionDecl>(FD2));
6078 bool AtLeastAsConstrained1, AtLeastAsConstrained2;
6083 if (AtLeastAsConstrained1 == AtLeastAsConstrained2)
6085 return AtLeastAsConstrained1 ? FD1 : FD2;
6095template<
typename TemplateLikeDecl>
6097 TemplateLikeDecl *P2,
6126 Deduced.resize(P2->getTemplateParameters()->size());
6128 S, P2->getTemplateParameters(), T2, T1, Info, Deduced,
TDF_None,
6129 PartialOrderingKind::Call,
false,
6140 const auto *TST1 = cast<TemplateSpecializationType>(T1);
6141 bool AtLeastAsSpecialized;
6143 AtLeastAsSpecialized =
6144 FinishTemplateArgumentDeduction(
6145 S, P2, true, TST1->template_arguments(),
6146 Deduced, Info) == TemplateDeductionResult::Success;
6148 return AtLeastAsSpecialized;
6155 template <
typename T1,
typename T2,
6156 std::enable_if_t<std::is_same_v<T1, T2>,
bool> =
true>
6157 T2 *operator()(T1 *, T2 *P2) {
6160 template <
typename T1,
typename T2,
6161 std::enable_if_t<!std::is_same_v<T1, T2>,
bool> =
true>
6162 T1 *operator()(T1 *, T2 *) {
6168struct TemplateArgumentListAreEqual {
6170 TemplateArgumentListAreEqual(
ASTContext &Ctx) : Ctx(Ctx) {}
6172 template <
typename T1,
typename T2,
6173 std::enable_if_t<std::is_same_v<T1, T2>,
bool> =
true>
6174 bool operator()(T1 *PS1, T2 *PS2) {
6176 Args2 = PS2->getTemplateArgs().asArray();
6178 for (
unsigned I = 0,
E = Args1.size(); I <
E; ++I) {
6182 llvm::FoldingSetNodeID IDA, IDB;
6183 Args1[I].Profile(IDA, Ctx);
6184 Args2[I].Profile(IDB, Ctx);
6191 template <
typename T1,
typename T2,
6192 std::enable_if_t<!std::is_same_v<T1, T2>,
bool> =
true>
6193 bool operator()(T1 *Spec, T2 *Primary) {
6195 Args2 = Primary->getInjectedTemplateArgs(Ctx);
6197 for (
unsigned I = 0,
E = Args1.size(); I <
E; ++I) {
6201 llvm::FoldingSetNodeID IDA, IDB;
6202 Args1[I].Profile(IDA, Ctx);
6236template <
typename TemplateLikeDecl,
typename PrimaryDel>
6237static TemplateLikeDecl *
6240 constexpr bool IsMoreSpecialThanPrimaryCheck =
6241 !std::is_same_v<TemplateLikeDecl, PrimaryDel>;
6244 if (IsMoreSpecialThanPrimaryCheck && !Better1)
6248 if (IsMoreSpecialThanPrimaryCheck && !Better2)
6254 if (Better1 != Better2)
6255 return Better1 ? P1 : GetP2()(P1, P2);
6257 if (!Better1 && !Better2)
6262 auto *TST1 = cast<TemplateSpecializationType>(T1);
6263 auto *TST2 = cast<TemplateSpecializationType>(T2);
6266 assert(TST1->template_arguments().size() ==
6267 TST2->template_arguments().size());
6272 bool IsPackExpansion1 =
6274 bool IsPackExpansion2 =
6276 if (PackSize1 != PackSize2 && IsPackExpansion1 != IsPackExpansion2) {
6277 if (PackSize1 > PackSize2 && IsPackExpansion1)
6278 return GetP2()(P1, P2);
6279 if (PackSize1 < PackSize2 && IsPackExpansion2)
6308 if (!TemplateArgumentListAreEqual(S.
getASTContext())(P1, P2))
6312 P1->getAssociatedConstraints(AC1);
6313 P2->getAssociatedConstraints(AC2);
6314 bool AtLeastAsConstrained1, AtLeastAsConstrained2;
6316 (IsMoreSpecialThanPrimaryCheck && !AtLeastAsConstrained1))
6320 if (AtLeastAsConstrained1 == AtLeastAsConstrained2)
6322 return AtLeastAsConstrained1 ? P1 : GetP2()(P1, P2);
6357 "the partial specializations being compared should specialize"
6358 " the same template.");
6414 for (
unsigned I = 0, N =
P->size(); I != N; ++I) {
6423 Arg,
QualType(),
P->getParam(I)->getLocation()));
6433 SugaredPArgs, PArgs,
6444 Deduced.resize(A->
size());
6460 IsDeduced ? PackFold::ArgumentToParameter
6461 : PackFold::ParameterToArgument,
6472 bool AtLeastAsSpecialized;
6474 AtLeastAsSpecialized =
6475 ::FinishTemplateArgumentDeduction(
6476 *this, AArg, true, PArgs, Deduced, Info) ==
6477 TemplateDeductionResult::Success;
6479 return AtLeastAsSpecialized;
6484 llvm::SmallBitVector &
Used;
6487 MarkUsedTemplateParameterVisitor(llvm::SmallBitVector &
Used,
6492 if (
T->getDepth() == Depth)
6493 Used[
T->getIndex()] =
true;
6497 bool TraverseTemplateName(
TemplateName Template)
override {
6498 if (
auto *TTP = llvm::dyn_cast_or_null<TemplateTemplateParmDecl>(
6500 if (TTP->getDepth() == Depth)
6501 Used[TTP->getIndex()] =
true;
6507 if (
auto *NTTP = dyn_cast<NonTypeTemplateParmDecl>(
E->getDecl()))
6508 if (NTTP->getDepth() == Depth)
6509 Used[NTTP->getIndex()] =
true;
6522 llvm::SmallBitVector &
Used) {
6524 MarkUsedTemplateParameterVisitor(
Used, Depth)
6525 .TraverseStmt(
const_cast<Expr *
>(
E));
6531 E = Expansion->getPattern();
6553 llvm::SmallBitVector &
Used) {
6560 OnlyDeduced, Depth,
Used);
6570 llvm::SmallBitVector &
Used) {
6571 if (
TemplateDecl *Template = Name.getAsTemplateDecl()) {
6573 = dyn_cast<TemplateTemplateParmDecl>(Template)) {
6574 if (TTP->getDepth() == Depth)
6575 Used[TTP->getIndex()] =
true;
6594 llvm::SmallBitVector &
Used) {
6612 case Type::BlockPointer:
6620 case Type::LValueReference:
6621 case Type::RValueReference:
6629 case Type::MemberPointer: {
6634 OnlyDeduced, Depth,
Used);
6638 case Type::DependentSizedArray:
6640 cast<DependentSizedArrayType>(
T)->getSizeExpr(),
6641 OnlyDeduced, Depth,
Used);
6645 case Type::ConstantArray:
6646 case Type::IncompleteArray:
6647 case Type::ArrayParameter:
6649 cast<ArrayType>(
T)->getElementType(),
6650 OnlyDeduced, Depth,
Used);
6653 case Type::ExtVector:
6655 cast<VectorType>(
T)->getElementType(),
6656 OnlyDeduced, Depth,
Used);
6659 case Type::DependentVector: {
6660 const auto *VecType = cast<DependentVectorType>(
T);
6667 case Type::DependentSizedExtVector: {
6669 = cast<DependentSizedExtVectorType>(
T);
6677 case Type::DependentAddressSpace: {
6679 cast<DependentAddressSpaceType>(
T);
6681 OnlyDeduced, Depth,
Used);
6684 OnlyDeduced, Depth,
Used);
6688 case Type::ConstantMatrix: {
6695 case Type::DependentSizedMatrix: {
6706 case Type::FunctionProto: {
6710 for (
unsigned I = 0, N = Proto->
getNumParams(); I != N; ++I) {
6715 if (!OnlyDeduced || I + 1 == N ||
6733 case Type::TemplateTypeParm: {
6740 case Type::SubstTemplateTypeParmPack: {
6742 = cast<SubstTemplateTypeParmPackType>(
T);
6746 OnlyDeduced, Depth,
Used);
6750 case Type::InjectedClassName:
6751 T = cast<InjectedClassNameType>(
T)->getInjectedSpecializationType();
6754 case Type::TemplateSpecialization: {
6756 = cast<TemplateSpecializationType>(
T);
6776 cast<ComplexType>(
T)->getElementType(),
6777 OnlyDeduced, Depth,
Used);
6783 cast<AtomicType>(
T)->getValueType(),
6784 OnlyDeduced, Depth,
Used);
6787 case Type::DependentName:
6790 cast<DependentNameType>(
T)->getQualifier(),
6791 OnlyDeduced, Depth,
Used);
6794 case Type::DependentTemplateSpecialization: {
6808 = cast<DependentTemplateSpecializationType>(
T);
6811 OnlyDeduced, Depth,
Used);
6821 OnlyDeduced, Depth,
Used);
6824 case Type::TypeOfExpr:
6827 cast<TypeOfExprType>(
T)->getUnderlyingExpr(),
6828 OnlyDeduced, Depth,
Used);
6831 case Type::Decltype:
6834 cast<DecltypeType>(
T)->getUnderlyingExpr(),
6835 OnlyDeduced, Depth,
Used);
6838 case Type::PackIndexing:
6841 OnlyDeduced, Depth,
Used);
6843 OnlyDeduced, Depth,
Used);
6847 case Type::UnaryTransform:
6851 OnlyDeduced, Depth,
Used);
6854 case Type::PackExpansion:
6856 cast<PackExpansionType>(
T)->getPattern(),
6857 OnlyDeduced, Depth,
Used);
6861 case Type::DeducedTemplateSpecialization:
6863 cast<DeducedType>(
T)->getDeducedType(),
6864 OnlyDeduced, Depth,
Used);
6866 case Type::DependentBitInt:
6868 cast<DependentBitIntType>(
T)->getNumBitsExpr(),
6869 OnlyDeduced, Depth,
Used);
6872 case Type::HLSLAttributedResource:
6874 Ctx, cast<HLSLAttributedResourceType>(
T)->getWrappedType(), OnlyDeduced,
6876 if (cast<HLSLAttributedResourceType>(
T)->hasContainedType())
6878 Ctx, cast<HLSLAttributedResourceType>(
T)->getContainedType(),
6879 OnlyDeduced, Depth,
Used);
6884 case Type::VariableArray:
6885 case Type::FunctionNoProto:
6888 case Type::ObjCInterface:
6889 case Type::ObjCObject:
6890 case Type::ObjCObjectPointer:
6891 case Type::UnresolvedUsing:
6894#define TYPE(Class, Base)
6895#define ABSTRACT_TYPE(Class, Base)
6896#define DEPENDENT_TYPE(Class, Base)
6897#define NON_CANONICAL_TYPE(Class, Base) case Type::Class:
6898#include "clang/AST/TypeNodes.inc"
6910 llvm::SmallBitVector &
Used) {
6928 OnlyDeduced, Depth,
Used);
6946 llvm::SmallBitVector &
Used) {
6952 bool OnlyDeduced,
unsigned Depth,
6953 llvm::SmallBitVector &
Used) {
6962 for (
unsigned I = 0, N = TemplateArgs.
size(); I != N; ++I)
6969 llvm::SmallBitVector &Deduced) {
6973 Deduced.resize(TemplateParams->
size());
6976 for (
unsigned I = 0, N =
Function->getNumParams(); I != N; ++I)
6978 true, TemplateParams->
getDepth(), Deduced);
6989 llvm::SmallBitVector Deduced(TemplateParams->
size());
6993 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 TemplateDeductionResult DeduceTemplateArguments(Sema &S, TemplateParameterList *TemplateParams, ArrayRef< TemplateArgument > Ps, ArrayRef< TemplateArgument > As, TemplateDeductionInfo &Info, SmallVectorImpl< DeducedTemplateArgument > &Deduced, bool NumberOfArgumentsMustMatch, bool PartialOrdering, PackFold PackFold, bool *HasDeducedAnyParam)
static bool isSameTemplateArg(ASTContext &Context, TemplateArgument X, const TemplateArgument &Y, bool PartialOrdering, bool PackExpansionMatchesPack=false)
Determine whether two template arguments are the same.
static TemplateDeductionResult DeduceTemplateSpecArguments(Sema &S, TemplateParameterList *TemplateParams, const QualType P, QualType A, TemplateDeductionInfo &Info, bool PartialOrdering, SmallVectorImpl< DeducedTemplateArgument > &Deduced, bool *HasDeducedAnyParam)
static TemplateDeductionResult DeduceTemplateArgumentsByTypeMatch(Sema &S, TemplateParameterList *TemplateParams, QualType Param, QualType Arg, TemplateDeductionInfo &Info, SmallVectorImpl< DeducedTemplateArgument > &Deduced, unsigned TDF, PartialOrderingKind POK, bool DeducedFromArrayBound, bool *HasDeducedAnyParam)
Deduce the template arguments by comparing the parameter type and the argument type (C++ [temp....
static PartialOrderingKind degradeCallPartialOrderingKind(PartialOrderingKind POK)
When propagating a partial ordering kind into a NonCall context, this is used to downgrade a 'Call' i...
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 TemplateDeductionResult DeduceForEachType(Sema &S, TemplateParameterList *TemplateParams, ArrayRef< QualType > Params, ArrayRef< QualType > Args, TemplateDeductionInfo &Info, SmallVectorImpl< DeducedTemplateArgument > &Deduced, PartialOrderingKind POK, bool FinishingDeduction, T &&DeductFunc)
static TemplateDeductionResult DeduceTemplateBases(Sema &S, const CXXRecordDecl *RD, TemplateParameterList *TemplateParams, QualType P, TemplateDeductionInfo &Info, bool PartialOrdering, SmallVectorImpl< DeducedTemplateArgument > &Deduced, bool *HasDeducedAnyParam)
Attempt to deduce the template arguments by checking the base types according to (C++20 [temp....
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 TemplateDeductionResult DeduceNullPtrTemplateArgument(Sema &S, TemplateParameterList *TemplateParams, const NonTypeTemplateParmDecl *NTTP, QualType NullPtrType, TemplateDeductionInfo &Info, bool PartialOrdering, SmallVectorImpl< DeducedTemplateArgument > &Deduced, bool *HasDeducedAnyParam)
Deduce the value of the given non-type template parameter from the given null pointer template argume...
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 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 DeduceNonTypeTemplateArgument(Sema &S, TemplateParameterList *TemplateParams, const NonTypeTemplateParmDecl *NTTP, const DeducedTemplateArgument &NewDeduced, QualType ValueType, TemplateDeductionInfo &Info, bool PartialOrdering, SmallVectorImpl< DeducedTemplateArgument > &Deduced, bool *HasDeducedAnyParam)
Deduce the value of the given non-type template parameter as the given deduced template argument.
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.
PartialOrderingKind
The kind of PartialOrdering we're performing template argument deduction for (C++11 [temp....
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 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 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 bool isAtLeastAsSpecializedAs(Sema &S, SourceLocation Loc, FunctionTemplateDecl *FT1, FunctionTemplateDecl *FT2, TemplatePartialOrderingContext TPOC, ArrayRef< QualType > Args1, ArrayRef< QualType > Args2, bool Args1Offset)
Determine whether the function template FT1 is at least as specialized as FT2.
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 unsigned getFirstInnerIndex(FunctionTemplateDecl *FTD)
Get the index of the first template parameter that was originally from the innermost template-paramet...
static bool DeducedArgsNeedReplacement(TemplateDeclT *Template)
static TemplateDeductionResult CheckDeductionConsistency(Sema &S, FunctionTemplateDecl *FTD, int ArgIdx, QualType P, QualType A, ArrayRef< TemplateArgument > DeducedArgs, bool CheckConsistency)
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 bool isForwardingReference(QualType Param, unsigned FirstInnerIndex)
Determine whether a type denotes a forwarding reference.
bool DeducedArgsNeedReplacement< VarTemplatePartialSpecializationDecl >(VarTemplatePartialSpecializationDecl *Spec)
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 *IsIncomplete=nullptr)
bool DeducedArgsNeedReplacement< ClassTemplatePartialSpecializationDecl >(ClassTemplatePartialSpecializationDecl *Spec)
static bool isParameterPack(Expr *PackExpression)
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.
Allows QualTypes to be sorted and hence used in maps and sets.
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 ...
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.
TemplateName getCanonicalTemplateName(TemplateName Name, bool IgnoreDeduced=false) const
Retrieves the "canonical" template name that refers to a given template.
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
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...
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.
TemplateArgument getInjectedTemplateArg(NamedDecl *ParamDecl) const
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.
bool hasSameTemplateName(const TemplateName &X, const TemplateName &Y, bool IgnoreDeduced=false) const
Determine whether the given template names refer to the same template.
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.
TemplateName getDeducedTemplateName(TemplateName Underlying, DefaultArguments DefaultArgs) const
Represents a TemplateName which had some of its default arguments deduced.
const DependentSizedArrayType * getAsDependentSizedArrayType(QualType T) const
The result of parsing/analyzing an expression, statement etc.
Represents a C++11 auto or C++14 decltype(auto) type, possibly constrained by a type-constraint.
ArrayRef< TemplateArgument > getTypeConstraintArguments() const
bool isDecltypeAuto() const
ConceptDecl * getTypeConstraintConcept() const
AutoTypeKeyword getKeyword() const
bool isConstrained() const
A fixed int type of a specified bitwidth.
Represents a C++ conversion function within a class.
QualType getConversionType() const
Returns the type that this conversion function is converting to.
Represents a static or instance method of a struct/union/class.
bool isExplicitObjectMemberFunction() const
[C++2b][dcl.fct]/p7 An explicit object member function is a non-static member function with an explic...
RefQualifierKind getRefQualifier() const
Retrieve the ref-qualifier associated with this method.
Qualifiers getMethodQualifiers() const
The null pointer literal (C++11 [lex.nullptr])
Represents a C++ struct/union/class.
CXXMethodDecl * getLambdaCallOperator() const
Retrieve the lambda call operator of the closure type if this is a closure type.
Declaration of a class template.
QualType getInjectedClassNameSpecialization()
Retrieve the template specialization type of the injected-class-name for this class template.
QualType getInjectedSpecializationType() const
Retrieves the injected specialization type for this partial specialization.
ClassTemplateDecl * getSpecializedTemplate() const
Retrieve the template that this specialization specializes.
bool isClassScopeExplicitSpecialization() const
Is this an explicit specialization at class scope (within the class that owns the primary template)?...
Complex values, per C99 6.2.5p11.
Declaration of a C++20 concept.
const TypeClass * getTypePtr() const
Represents a concrete matrix type with constant number of rows and columns.
unsigned getNumColumns() const
Returns the number of columns in the matrix.
unsigned getNumRows() const
Returns the number of rows in the matrix.
The result of a constraint satisfaction check, containing the necessary information to diagnose an un...
A POD class for pairing a NamedDecl* with an access specifier.
DeclContext - This is used only as base class of specific decl types that can act as declaration cont...
DeclContext * getParent()
getParent - Returns the containing DeclContext.
A reference to a declared variable, function, enum, etc.
Decl - This represents one declaration (or definition), e.g.
TemplateDecl * getDescribedTemplate() const
If this is a declaration that describes some template, this method returns that template declaration.
FriendObjectKind getFriendObjectKind() const
Determines whether this declaration is the object of a friend declaration and, if so,...
bool isParameterPack() const
Whether this declaration is a parameter pack.
@ FOK_None
Not a friend object.
bool isInvalidDecl() const
SourceLocation getLocation() const
bool isTemplateParameterPack() const
isTemplateParameter - Determines whether this declaration is a template parameter pack.
DeclContext * getDeclContext()
DeclContext * getLexicalDeclContext()
getLexicalDeclContext - The declaration context where this Decl was lexically declared (LexicalDC).
virtual Decl * getCanonicalDecl()
Retrieves the "canonical" declaration of the given declaration.
virtual SourceRange getSourceRange() const LLVM_READONLY
Source range that this declaration covers.
Captures a template argument whose value has been deduced via c++ template argument deduction.
void setDeducedFromArrayBound(bool Deduced)
Specify whether the given non-type template argument was deduced from an array bound.
bool wasDeducedFromArrayBound() const
For a non-type template argument, determine whether the template argument was deduced from an array b...
TemplateName getTemplateName() const
Retrieve the name of the template that we are deducing.
Common base class for placeholders for types that get replaced by placeholder type deduction: C++11 a...
Represents an extended address space qualifier where the input address space value is dependent.
Expr * getAddrSpaceExpr() const
QualType getPointeeType() const
Represents an extended vector type where either the type or size is dependent.
Expr * getSizeExpr() const
QualType getElementType() const
Represents a matrix type where the type and the number of rows and columns is dependent on a template...
Expr * getColumnExpr() const
Expr * getRowExpr() const
Represents a dependent template name that cannot be resolved prior to template instantiation.
Represents a template specialization type whose template cannot be resolved, e.g.
ArrayRef< TemplateArgument > template_arguments() const
NestedNameSpecifier * getQualifier() const
Represents a vector type where either the type or size is dependent.
Recursive AST visitor that supports extension via dynamic dispatch.
virtual bool TraverseTemplateName(TemplateName Template)
Recursively visit a template name and dispatch to the appropriate method.
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
bool isFunctionTemplateSpecialization() const
Determine whether this function is a function template specialization.
FunctionTemplateDecl * getDescribedFunctionTemplate() const
Retrieves the function template that is described by this function declaration.
bool hasCXXExplicitFunctionObjectParameter() const
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
OverloadedOperatorKind getOverloadedOperator() const
getOverloadedOperator - Which C++ overloaded operator this function represents, if any.
void getAssociatedConstraints(SmallVectorImpl< const Expr * > &AC) const
Get the associated-constraints of this function declaration.
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.
Qualifiers getMethodQuals() const
QualType getParamType(unsigned i) const
bool hasExceptionSpec() const
Return whether this function has any kind of exception spec.
bool isVariadic() const
Whether this function prototype is variadic.
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
RefQualifierKind getRefQualifier() const
Retrieve the ref-qualifier associated with this function type.
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...
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 compatiblyIncludes(Qualifiers other, const ASTContext &Ctx) const
Determines if these qualifiers compatibly include another set.
bool hasAddressSpace() const
void removeAddressSpace()
bool hasObjCGCAttr() const
void setCVRQualifiers(unsigned mask)
bool hasObjCLifetime() const
ObjCLifetime getObjCLifetime() const
Qualifiers withoutObjCLifetime() const
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...
ArrayRef< TemplateArgument > getInjectedTemplateArgs(const ASTContext &Context) const
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)
@ 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...
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.
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, bool ForDefaultArgumentSubstitution=false)
Retrieve the template argument list(s) that should be used to instantiate the definition of the given...
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.
bool CheckTemplateArgumentList(TemplateDecl *Template, SourceLocation TemplateLoc, TemplateArgumentListInfo &TemplateArgs, const DefaultArguments &DefaultArgs, 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...
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)
bool isTemplateTemplateParameterAtLeastAsSpecializedAs(TemplateParameterList *PParam, TemplateDecl *AArg, const DefaultArguments &DefaultArgs, SourceLocation Loc, bool IsDeduced)
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"...
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.
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(bool IgnoreDeduced=false) 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)
ArrayRef< TemplateArgument > getInjectedTemplateArgs(const ASTContext &Context)
Get the template argument list of the template parameter list.
unsigned getDepth() const
Get the depth of this template parameter list in the set of template parameter lists.
ArrayRef< NamedDecl * > asArray()
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.
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.
CXXRecordDecl * getAsCXXRecordDecl() const
Retrieves the CXXRecordDecl that this type refers to, either because the type is a RecordType or beca...
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.
@ OO_None
Not an overloaded operator.
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.
std::pair< unsigned, unsigned > getDepthAndIndex(const NamedDecl *ND)
Retrieve the depth and index of a template parameter.
llvm::PointerUnion< TemplateTypeParmDecl *, NonTypeTemplateParmDecl *, TemplateTemplateParmDecl * > TemplateParameter
Stores a template parameter of any kind.
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.
bool declaresSameEntity(const Decl *D1, const Decl *D2)
Determine whether two declarations declare the same entity.
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.