Bug Summary

File:build/llvm-toolchain-snapshot-15~++20220420111733+e13d2efed663/clang/lib/AST/DeclTemplate.cpp
Warning:line 88, column 9
Called C++ object pointer is null

Annotated Source Code

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clang -cc1 -cc1 -triple x86_64-pc-linux-gnu -analyze -disable-free -clear-ast-before-backend -disable-llvm-verifier -discard-value-names -main-file-name DeclTemplate.cpp -analyzer-store=region -analyzer-opt-analyze-nested-blocks -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=deadcode -analyzer-checker=cplusplus -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -setup-static-analyzer -analyzer-config-compatibility-mode=true -mrelocation-model pic -pic-level 2 -mframe-pointer=none -relaxed-aliasing -fmath-errno -ffp-contract=on -fno-rounding-math -mconstructor-aliases -funwind-tables=2 -target-cpu x86-64 -tune-cpu generic -debugger-tuning=gdb -ffunction-sections -fdata-sections -fcoverage-compilation-dir=/build/llvm-toolchain-snapshot-15~++20220420111733+e13d2efed663/build-llvm -resource-dir /usr/lib/llvm-15/lib/clang/15.0.0 -D _DEBUG -D _GNU_SOURCE -D __STDC_CONSTANT_MACROS -D __STDC_FORMAT_MACROS -D __STDC_LIMIT_MACROS -I tools/clang/lib/AST -I /build/llvm-toolchain-snapshot-15~++20220420111733+e13d2efed663/clang/lib/AST -I /build/llvm-toolchain-snapshot-15~++20220420111733+e13d2efed663/clang/include -I tools/clang/include -I include -I /build/llvm-toolchain-snapshot-15~++20220420111733+e13d2efed663/llvm/include -D _FORTIFY_SOURCE=2 -D NDEBUG -U NDEBUG -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/10/../../../../include/x86_64-linux-gnu/c++/10 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/backward -internal-isystem /usr/lib/llvm-15/lib/clang/15.0.0/include -internal-isystem /usr/local/include -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/10/../../../../x86_64-linux-gnu/include -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -fmacro-prefix-map=/build/llvm-toolchain-snapshot-15~++20220420111733+e13d2efed663/build-llvm=build-llvm -fmacro-prefix-map=/build/llvm-toolchain-snapshot-15~++20220420111733+e13d2efed663/= -fcoverage-prefix-map=/build/llvm-toolchain-snapshot-15~++20220420111733+e13d2efed663/build-llvm=build-llvm -fcoverage-prefix-map=/build/llvm-toolchain-snapshot-15~++20220420111733+e13d2efed663/= -O3 -Wno-unused-command-line-argument -Wno-unused-parameter -Wwrite-strings -Wno-missing-field-initializers -Wno-long-long -Wno-maybe-uninitialized -Wno-class-memaccess -Wno-redundant-move -Wno-pessimizing-move -Wno-noexcept-type -Wno-comment -std=c++14 -fdeprecated-macro -fdebug-compilation-dir=/build/llvm-toolchain-snapshot-15~++20220420111733+e13d2efed663/build-llvm -fdebug-prefix-map=/build/llvm-toolchain-snapshot-15~++20220420111733+e13d2efed663/build-llvm=build-llvm -fdebug-prefix-map=/build/llvm-toolchain-snapshot-15~++20220420111733+e13d2efed663/= -ferror-limit 19 -fvisibility-inlines-hidden -stack-protector 2 -fgnuc-version=4.2.1 -fcolor-diagnostics -vectorize-loops -vectorize-slp -analyzer-output=html -analyzer-config stable-report-filename=true -faddrsig -D__GCC_HAVE_DWARF2_CFI_ASM=1 -o /tmp/scan-build-2022-04-20-140412-16051-1 -x c++ /build/llvm-toolchain-snapshot-15~++20220420111733+e13d2efed663/clang/lib/AST/DeclTemplate.cpp
1//===- DeclTemplate.cpp - Template Declaration AST Node Implementation ----===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8//
9// This file implements the C++ related Decl classes for templates.
10//
11//===----------------------------------------------------------------------===//
12
13#include "clang/AST/DeclTemplate.h"
14#include "clang/AST/ASTContext.h"
15#include "clang/AST/ASTMutationListener.h"
16#include "clang/AST/DeclCXX.h"
17#include "clang/AST/DeclarationName.h"
18#include "clang/AST/Expr.h"
19#include "clang/AST/ExternalASTSource.h"
20#include "clang/AST/TemplateBase.h"
21#include "clang/AST/TemplateName.h"
22#include "clang/AST/Type.h"
23#include "clang/AST/TypeLoc.h"
24#include "clang/Basic/Builtins.h"
25#include "clang/Basic/LLVM.h"
26#include "clang/Basic/SourceLocation.h"
27#include "llvm/ADT/ArrayRef.h"
28#include "llvm/ADT/FoldingSet.h"
29#include "llvm/ADT/None.h"
30#include "llvm/ADT/PointerUnion.h"
31#include "llvm/ADT/STLExtras.h"
32#include "llvm/ADT/SmallVector.h"
33#include "llvm/Support/Casting.h"
34#include "llvm/Support/ErrorHandling.h"
35#include <algorithm>
36#include <cassert>
37#include <cstdint>
38#include <memory>
39#include <utility>
40
41using namespace clang;
42
43//===----------------------------------------------------------------------===//
44// TemplateParameterList Implementation
45//===----------------------------------------------------------------------===//
46
47
48TemplateParameterList::TemplateParameterList(const ASTContext& C,
49 SourceLocation TemplateLoc,
50 SourceLocation LAngleLoc,
51 ArrayRef<NamedDecl *> Params,
52 SourceLocation RAngleLoc,
53 Expr *RequiresClause)
54 : TemplateLoc(TemplateLoc), LAngleLoc(LAngleLoc), RAngleLoc(RAngleLoc),
55 NumParams(Params.size()), ContainsUnexpandedParameterPack(false),
56 HasRequiresClause(RequiresClause != nullptr),
57 HasConstrainedParameters(false) {
58 for (unsigned Idx = 0; Idx < NumParams; ++Idx) {
9
←
Assuming 'Idx' is < field 'NumParams'
→
10
←
Loop condition is true. Entering loop body
→
15
←
Assuming 'Idx' is >= field 'NumParams'
→
16
←
Loop condition is false. Execution continues on line 87
→
59 NamedDecl *P = Params[Idx];
60 begin()[Idx] = P;
61
62 bool IsPack = P->isTemplateParameterPack();
63 if (const auto *NTTP
11.1
'NTTP' is null
 = dyn_cast<NonTypeTemplateParmDecl>(P)) {
11
←
Assuming 'P' is not a 'NonTypeTemplateParmDecl'
→
12
←
Taking false branch
→
64 if (!IsPack && NTTP->getType()->containsUnexpandedParameterPack())
65 ContainsUnexpandedParameterPack = true;
66 if (NTTP->hasPlaceholderTypeConstraint())
67 HasConstrainedParameters = true;
68 } else if (const auto *TTP
13.1
'TTP' is non-null
 = dyn_cast<TemplateTemplateParmDecl>(P)) {
13
←
Assuming 'P' is a 'TemplateTemplateParmDecl'
→
69 if (!IsPack &&
14
←
Assuming 'IsPack' is true
→
70 TTP->getTemplateParameters()->containsUnexpandedParameterPack())
71 ContainsUnexpandedParameterPack = true;
72 } else if (const auto *TTP = dyn_cast<TemplateTypeParmDecl>(P)) {
73 if (const TypeConstraint *TC = TTP->getTypeConstraint()) {
74 if (TC->getImmediatelyDeclaredConstraint()
75 ->containsUnexpandedParameterPack())
76 ContainsUnexpandedParameterPack = true;
77 }
78 if (TTP->hasTypeConstraint())
79 HasConstrainedParameters = true;
80 } else {
81 llvm_unreachable("unexpected template parameter type")::llvm::llvm_unreachable_internal("unexpected template parameter type"
, "clang/lib/AST/DeclTemplate.cpp", 81);
82 }
83 // FIXME: If a default argument contains an unexpanded parameter pack, the
84 // template parameter list does too.
85 }
86
87 if (HasRequiresClause) {
17
←
Assuming field 'HasRequiresClause' is not equal to 0
→
18
←
Taking true branch
→
88 if (RequiresClause->containsUnexpandedParameterPack())
19
←
Called C++ object pointer is null
89 ContainsUnexpandedParameterPack = true;
90 *getTrailingObjects<Expr *>() = RequiresClause;
91 }
92}
93
94bool TemplateParameterList::containsUnexpandedParameterPack() const {
95 if (ContainsUnexpandedParameterPack)
96 return true;
97 if (!HasConstrainedParameters)
98 return false;
99
100 // An implicit constrained parameter might have had a use of an unexpanded
101 // pack added to it after the template parameter list was created. All
102 // implicit parameters are at the end of the parameter list.
103 for (const NamedDecl *Param : llvm::reverse(asArray())) {
104 if (!Param->isImplicit())
105 break;
106
107 if (const auto *TTP = dyn_cast<TemplateTypeParmDecl>(Param)) {
108 const auto *TC = TTP->getTypeConstraint();
109 if (TC && TC->getImmediatelyDeclaredConstraint()
110 ->containsUnexpandedParameterPack())
111 return true;
112 }
113 }
114
115 return false;
116}
117
118TemplateParameterList *
119TemplateParameterList::Create(const ASTContext &C, SourceLocation TemplateLoc,
120 SourceLocation LAngleLoc,
121 ArrayRef<NamedDecl *> Params,
122 SourceLocation RAngleLoc, Expr *RequiresClause) {
123 void *Mem = C.Allocate(totalSizeToAlloc<NamedDecl *, Expr *>(
124 Params.size(), RequiresClause
5.1
'RequiresClause' is null
 ? 1u : 0u),
6
←
'?' condition is false
→
125 alignof(TemplateParameterList));
126 return new (Mem) TemplateParameterList(C, TemplateLoc, LAngleLoc, Params,
8
←
Calling constructor for 'TemplateParameterList'
→
127 RAngleLoc, RequiresClause);
7
←
Passing null pointer value via 6th parameter 'RequiresClause'
→
128}
129
130unsigned TemplateParameterList::getMinRequiredArguments() const {
131 unsigned NumRequiredArgs = 0;
132 for (const NamedDecl *P : asArray()) {
133 if (P->isTemplateParameterPack()) {
134 if (Optional<unsigned> Expansions = getExpandedPackSize(P)) {
135 NumRequiredArgs += *Expansions;
136 continue;
137 }
138 break;
139 }
140
141 if (const auto *TTP = dyn_cast<TemplateTypeParmDecl>(P)) {
142 if (TTP->hasDefaultArgument())
143 break;
144 } else if (const auto *NTTP = dyn_cast<NonTypeTemplateParmDecl>(P)) {
145 if (NTTP->hasDefaultArgument())
146 break;
147 } else if (cast<TemplateTemplateParmDecl>(P)->hasDefaultArgument())
148 break;
149
150 ++NumRequiredArgs;
151 }
152
153 return NumRequiredArgs;
154}
155
156unsigned TemplateParameterList::getDepth() const {
157 if (size() == 0)
158 return 0;
159
160 const NamedDecl *FirstParm = getParam(0);
161 if (const auto *TTP = dyn_cast<TemplateTypeParmDecl>(FirstParm))
162 return TTP->getDepth();
163 else if (const auto *NTTP = dyn_cast<NonTypeTemplateParmDecl>(FirstParm))
164 return NTTP->getDepth();
165 else
166 return cast<TemplateTemplateParmDecl>(FirstParm)->getDepth();
167}
168
169static bool AdoptTemplateParameterList(TemplateParameterList *Params,
170 DeclContext *Owner) {
171 bool Invalid = false;
172 for (NamedDecl *P : *Params) {
173 P->setDeclContext(Owner);
174
175 if (const auto *TTP = dyn_cast<TemplateTemplateParmDecl>(P))
176 if (AdoptTemplateParameterList(TTP->getTemplateParameters(), Owner))
177 Invalid = true;
178
179 if (P->isInvalidDecl())
180 Invalid = true;
181 }
182 return Invalid;
183}
184
185void TemplateParameterList::
186getAssociatedConstraints(llvm::SmallVectorImpl<const Expr *> &AC) const {
187 if (HasConstrainedParameters)
188 for (const NamedDecl *Param : *this) {
189 if (const auto *TTP = dyn_cast<TemplateTypeParmDecl>(Param)) {
190 if (const auto *TC = TTP->getTypeConstraint())
191 AC.push_back(TC->getImmediatelyDeclaredConstraint());
192 } else if (const auto *NTTP = dyn_cast<NonTypeTemplateParmDecl>(Param)) {
193 if (const Expr *E = NTTP->getPlaceholderTypeConstraint())
194 AC.push_back(E);
195 }
196 }
197 if (HasRequiresClause)
198 AC.push_back(getRequiresClause());
199}
200
201bool TemplateParameterList::hasAssociatedConstraints() const {
202 return HasRequiresClause || HasConstrainedParameters;
203}
204
205bool TemplateParameterList::shouldIncludeTypeForArgument(
206 const PrintingPolicy &Policy, const TemplateParameterList *TPL,
207 unsigned Idx) {
208 if (!TPL || Idx >= TPL->size() || Policy.AlwaysIncludeTypeForTemplateArgument)
209 return true;
210 const NamedDecl *TemplParam = TPL->getParam(Idx);
211 if (const auto *ParamValueDecl =
212 dyn_cast<NonTypeTemplateParmDecl>(TemplParam))
213 if (ParamValueDecl->getType()->getContainedDeducedType())
214 return true;
215 return false;
216}
217
218namespace clang {
219
220void *allocateDefaultArgStorageChain(const ASTContext &C) {
221 return new (C) char[sizeof(void*) * 2];
222}
223
224} // namespace clang
225
226//===----------------------------------------------------------------------===//
227// TemplateDecl Implementation
228//===----------------------------------------------------------------------===//
229
230TemplateDecl::TemplateDecl(Kind DK, DeclContext *DC, SourceLocation L,
231 DeclarationName Name, TemplateParameterList *Params,
232 NamedDecl *Decl)
233 : NamedDecl(DK, DC, L, Name), TemplatedDecl(Decl), TemplateParams(Params) {}
234
235void TemplateDecl::anchor() {}
236
237void TemplateDecl::
238getAssociatedConstraints(llvm::SmallVectorImpl<const Expr *> &AC) const {
239 TemplateParams->getAssociatedConstraints(AC);
240 if (auto *FD = dyn_cast_or_null<FunctionDecl>(getTemplatedDecl()))
241 if (const Expr *TRC = FD->getTrailingRequiresClause())
242 AC.push_back(TRC);
243}
244
245bool TemplateDecl::hasAssociatedConstraints() const {
246 if (TemplateParams->hasAssociatedConstraints())
247 return true;
248 if (auto *FD = dyn_cast_or_null<FunctionDecl>(getTemplatedDecl()))
249 return FD->getTrailingRequiresClause();
250 return false;
251}
252
253//===----------------------------------------------------------------------===//
254// RedeclarableTemplateDecl Implementation
255//===----------------------------------------------------------------------===//
256
257void RedeclarableTemplateDecl::anchor() {}
258
259RedeclarableTemplateDecl::CommonBase *RedeclarableTemplateDecl::getCommonPtr() const {
260 if (Common)
261 return Common;
262
263 // Walk the previous-declaration chain until we either find a declaration
264 // with a common pointer or we run out of previous declarations.
265 SmallVector<const RedeclarableTemplateDecl *, 2> PrevDecls;
266 for (const RedeclarableTemplateDecl *Prev = getPreviousDecl(); Prev;
267 Prev = Prev->getPreviousDecl()) {
268 if (Prev->Common) {
269 Common = Prev->Common;
270 break;
271 }
272
273 PrevDecls.push_back(Prev);
274 }
275
276 // If we never found a common pointer, allocate one now.
277 if (!Common) {
278 // FIXME: If any of the declarations is from an AST file, we probably
279 // need an update record to add the common data.
280
281 Common = newCommon(getASTContext());
282 }
283
284 // Update any previous declarations we saw with the common pointer.
285 for (const RedeclarableTemplateDecl *Prev : PrevDecls)
286 Prev->Common = Common;
287
288 return Common;
289}
290
291void RedeclarableTemplateDecl::loadLazySpecializationsImpl() const {
292 // Grab the most recent declaration to ensure we've loaded any lazy
293 // redeclarations of this template.
294 CommonBase *CommonBasePtr = getMostRecentDecl()->getCommonPtr();
295 if (CommonBasePtr->LazySpecializations) {
296 ASTContext &Context = getASTContext();
297 uint32_t *Specs = CommonBasePtr->LazySpecializations;
298 CommonBasePtr->LazySpecializations = nullptr;
299 for (uint32_t I = 0, N = *Specs++; I != N; ++I)
300 (void)Context.getExternalSource()->GetExternalDecl(Specs[I]);
301 }
302}
303
304template<class EntryType, typename... ProfileArguments>
305typename RedeclarableTemplateDecl::SpecEntryTraits<EntryType>::DeclType *
306RedeclarableTemplateDecl::findSpecializationImpl(
307 llvm::FoldingSetVector<EntryType> &Specs, void *&InsertPos,
308 ProfileArguments&&... ProfileArgs) {
309 using SETraits = SpecEntryTraits<EntryType>;
310
311 llvm::FoldingSetNodeID ID;
312 EntryType::Profile(ID, std::forward<ProfileArguments>(ProfileArgs)...,
313 getASTContext());
314 EntryType *Entry = Specs.FindNodeOrInsertPos(ID, InsertPos);
315 return Entry ? SETraits::getDecl(Entry)->getMostRecentDecl() : nullptr;
316}
317
318template<class Derived, class EntryType>
319void RedeclarableTemplateDecl::addSpecializationImpl(
320 llvm::FoldingSetVector<EntryType> &Specializations, EntryType *Entry,
321 void *InsertPos) {
322 using SETraits = SpecEntryTraits<EntryType>;
323
324 if (InsertPos) {
325#ifndef NDEBUG
326 void *CorrectInsertPos;
327 assert(!findSpecializationImpl(Specializations,(static_cast <bool> (!findSpecializationImpl(Specializations
, CorrectInsertPos, SETraits::getTemplateArgs(Entry)) &&
InsertPos == CorrectInsertPos && "given incorrect InsertPos for specialization"
) ? void (0) : __assert_fail ("!findSpecializationImpl(Specializations, CorrectInsertPos, SETraits::getTemplateArgs(Entry)) && InsertPos == CorrectInsertPos && \"given incorrect InsertPos for specialization\""
, "clang/lib/AST/DeclTemplate.cpp", 331, __extension__ __PRETTY_FUNCTION__
))
328 CorrectInsertPos,(static_cast <bool> (!findSpecializationImpl(Specializations
, CorrectInsertPos, SETraits::getTemplateArgs(Entry)) &&
InsertPos == CorrectInsertPos && "given incorrect InsertPos for specialization"
) ? void (0) : __assert_fail ("!findSpecializationImpl(Specializations, CorrectInsertPos, SETraits::getTemplateArgs(Entry)) && InsertPos == CorrectInsertPos && \"given incorrect InsertPos for specialization\""
, "clang/lib/AST/DeclTemplate.cpp", 331, __extension__ __PRETTY_FUNCTION__
))
329 SETraits::getTemplateArgs(Entry)) &&(static_cast <bool> (!findSpecializationImpl(Specializations
, CorrectInsertPos, SETraits::getTemplateArgs(Entry)) &&
InsertPos == CorrectInsertPos && "given incorrect InsertPos for specialization"
) ? void (0) : __assert_fail ("!findSpecializationImpl(Specializations, CorrectInsertPos, SETraits::getTemplateArgs(Entry)) && InsertPos == CorrectInsertPos && \"given incorrect InsertPos for specialization\""
, "clang/lib/AST/DeclTemplate.cpp", 331, __extension__ __PRETTY_FUNCTION__
))
330 InsertPos == CorrectInsertPos &&(static_cast <bool> (!findSpecializationImpl(Specializations
, CorrectInsertPos, SETraits::getTemplateArgs(Entry)) &&
InsertPos == CorrectInsertPos && "given incorrect InsertPos for specialization"
) ? void (0) : __assert_fail ("!findSpecializationImpl(Specializations, CorrectInsertPos, SETraits::getTemplateArgs(Entry)) && InsertPos == CorrectInsertPos && \"given incorrect InsertPos for specialization\""
, "clang/lib/AST/DeclTemplate.cpp", 331, __extension__ __PRETTY_FUNCTION__
))
331 "given incorrect InsertPos for specialization")(static_cast <bool> (!findSpecializationImpl(Specializations
, CorrectInsertPos, SETraits::getTemplateArgs(Entry)) &&
InsertPos == CorrectInsertPos && "given incorrect InsertPos for specialization"
) ? void (0) : __assert_fail ("!findSpecializationImpl(Specializations, CorrectInsertPos, SETraits::getTemplateArgs(Entry)) && InsertPos == CorrectInsertPos && \"given incorrect InsertPos for specialization\""
, "clang/lib/AST/DeclTemplate.cpp", 331, __extension__ __PRETTY_FUNCTION__
));
332#endif
333 Specializations.InsertNode(Entry, InsertPos);
334 } else {
335 EntryType *Existing = Specializations.GetOrInsertNode(Entry);
336 (void)Existing;
337 assert(SETraits::getDecl(Existing)->isCanonicalDecl() &&(static_cast <bool> (SETraits::getDecl(Existing)->isCanonicalDecl
() && "non-canonical specialization?") ? void (0) : __assert_fail
("SETraits::getDecl(Existing)->isCanonicalDecl() && \"non-canonical specialization?\""
, "clang/lib/AST/DeclTemplate.cpp", 338, __extension__ __PRETTY_FUNCTION__
))
338 "non-canonical specialization?")(static_cast <bool> (SETraits::getDecl(Existing)->isCanonicalDecl
() && "non-canonical specialization?") ? void (0) : __assert_fail
("SETraits::getDecl(Existing)->isCanonicalDecl() && \"non-canonical specialization?\""
, "clang/lib/AST/DeclTemplate.cpp", 338, __extension__ __PRETTY_FUNCTION__
));
339 }
340
341 if (ASTMutationListener *L = getASTMutationListener())
342 L->AddedCXXTemplateSpecialization(cast<Derived>(this),
343 SETraits::getDecl(Entry));
344}
345
346//===----------------------------------------------------------------------===//
347// FunctionTemplateDecl Implementation
348//===----------------------------------------------------------------------===//
349
350FunctionTemplateDecl *
351FunctionTemplateDecl::Create(ASTContext &C, DeclContext *DC, SourceLocation L,
352 DeclarationName Name,
353 TemplateParameterList *Params, NamedDecl *Decl) {
354 bool Invalid = AdoptTemplateParameterList(Params, cast<DeclContext>(Decl));
355 auto *TD = new (C, DC) FunctionTemplateDecl(C, DC, L, Name, Params, Decl);
356 if (Invalid)
357 TD->setInvalidDecl();
358 return TD;
359}
360
361FunctionTemplateDecl *FunctionTemplateDecl::CreateDeserialized(ASTContext &C,
362 unsigned ID) {
363 return new (C, ID) FunctionTemplateDecl(C, nullptr, SourceLocation(),
364 DeclarationName(), nullptr, nullptr);
365}
366
367RedeclarableTemplateDecl::CommonBase *
368FunctionTemplateDecl::newCommon(ASTContext &C) const {
369 auto *CommonPtr = new (C) Common;
370 C.addDestruction(CommonPtr);
371 return CommonPtr;
372}
373
374void FunctionTemplateDecl::LoadLazySpecializations() const {
375 loadLazySpecializationsImpl();
376}
377
378llvm::FoldingSetVector<FunctionTemplateSpecializationInfo> &
379FunctionTemplateDecl::getSpecializations() const {
380 LoadLazySpecializations();
381 return getCommonPtr()->Specializations;
382}
383
384FunctionDecl *
385FunctionTemplateDecl::findSpecialization(ArrayRef<TemplateArgument> Args,
386 void *&InsertPos) {
387 return findSpecializationImpl(getSpecializations(), InsertPos, Args);
388}
389
390void FunctionTemplateDecl::addSpecialization(
391 FunctionTemplateSpecializationInfo *Info, void *InsertPos) {
392 addSpecializationImpl<FunctionTemplateDecl>(getSpecializations(), Info,
393 InsertPos);
394}
395
396ArrayRef<TemplateArgument> FunctionTemplateDecl::getInjectedTemplateArgs() {
397 TemplateParameterList *Params = getTemplateParameters();
398 Common *CommonPtr = getCommonPtr();
399 if (!CommonPtr->InjectedArgs) {
400 auto &Context = getASTContext();
401 SmallVector<TemplateArgument, 16> TemplateArgs;
402 Context.getInjectedTemplateArgs(Params, TemplateArgs);
403 CommonPtr->InjectedArgs =
404 new (Context) TemplateArgument[TemplateArgs.size()];
405 std::copy(TemplateArgs.begin(), TemplateArgs.end(),
406 CommonPtr->InjectedArgs);
407 }
408
409 return llvm::makeArrayRef(CommonPtr->InjectedArgs, Params->size());
410}
411
412void FunctionTemplateDecl::mergePrevDecl(FunctionTemplateDecl *Prev) {
413 using Base = RedeclarableTemplateDecl;
414
415 // If we haven't created a common pointer yet, then it can just be created
416 // with the usual method.
417 if (!Base::Common)
418 return;
419
420 Common *ThisCommon = static_cast<Common *>(Base::Common);
421 Common *PrevCommon = nullptr;
422 SmallVector<FunctionTemplateDecl *, 8> PreviousDecls;
423 for (; Prev; Prev = Prev->getPreviousDecl()) {
424 if (Prev->Base::Common) {
425 PrevCommon = static_cast<Common *>(Prev->Base::Common);
426 break;
427 }
428 PreviousDecls.push_back(Prev);
429 }
430
431 // If the previous redecl chain hasn't created a common pointer yet, then just
432 // use this common pointer.
433 if (!PrevCommon) {
434 for (auto *D : PreviousDecls)
435 D->Base::Common = ThisCommon;
436 return;
437 }
438
439 // Ensure we don't leak any important state.
440 assert(ThisCommon->Specializations.size() == 0 &&(static_cast <bool> (ThisCommon->Specializations.size
() == 0 && "Can't merge incompatible declarations!") ?
void (0) : __assert_fail ("ThisCommon->Specializations.size() == 0 && \"Can't merge incompatible declarations!\""
, "clang/lib/AST/DeclTemplate.cpp", 441, __extension__ __PRETTY_FUNCTION__
))
441 "Can't merge incompatible declarations!")(static_cast <bool> (ThisCommon->Specializations.size
() == 0 && "Can't merge incompatible declarations!") ?
void (0) : __assert_fail ("ThisCommon->Specializations.size() == 0 && \"Can't merge incompatible declarations!\""
, "clang/lib/AST/DeclTemplate.cpp", 441, __extension__ __PRETTY_FUNCTION__
));
442
443 Base::Common = PrevCommon;
444}
445
446//===----------------------------------------------------------------------===//
447// ClassTemplateDecl Implementation
448//===----------------------------------------------------------------------===//
449
450ClassTemplateDecl *ClassTemplateDecl::Create(ASTContext &C, DeclContext *DC,
451 SourceLocation L,
452 DeclarationName Name,
453 TemplateParameterList *Params,
454 NamedDecl *Decl) {
455 bool Invalid = AdoptTemplateParameterList(Params, cast<DeclContext>(Decl));
456 auto *TD = new (C, DC) ClassTemplateDecl(C, DC, L, Name, Params, Decl);
457 if (Invalid)
458 TD->setInvalidDecl();
459 return TD;
460}
461
462ClassTemplateDecl *ClassTemplateDecl::CreateDeserialized(ASTContext &C,
463 unsigned ID) {
464 return new (C, ID) ClassTemplateDecl(C, nullptr, SourceLocation(),
465 DeclarationName(), nullptr, nullptr);
466}
467
468void ClassTemplateDecl::LoadLazySpecializations() const {
469 loadLazySpecializationsImpl();
470}
471
472llvm::FoldingSetVector<ClassTemplateSpecializationDecl> &
473ClassTemplateDecl::getSpecializations() const {
474 LoadLazySpecializations();
475 return getCommonPtr()->Specializations;
476}
477
478llvm::FoldingSetVector<ClassTemplatePartialSpecializationDecl> &
479ClassTemplateDecl::getPartialSpecializations() const {
480 LoadLazySpecializations();
481 return getCommonPtr()->PartialSpecializations;
482}
483
484RedeclarableTemplateDecl::CommonBase *
485ClassTemplateDecl::newCommon(ASTContext &C) const {
486 auto *CommonPtr = new (C) Common;
487 C.addDestruction(CommonPtr);
488 return CommonPtr;
489}
490
491ClassTemplateSpecializationDecl *
492ClassTemplateDecl::findSpecialization(ArrayRef<TemplateArgument> Args,
493 void *&InsertPos) {
494 return findSpecializationImpl(getSpecializations(), InsertPos, Args);
495}
496
497void ClassTemplateDecl::AddSpecialization(ClassTemplateSpecializationDecl *D,
498 void *InsertPos) {
499 addSpecializationImpl<ClassTemplateDecl>(getSpecializations(), D, InsertPos);
500}
501
502ClassTemplatePartialSpecializationDecl *
503ClassTemplateDecl::findPartialSpecialization(
504 ArrayRef<TemplateArgument> Args,
505 TemplateParameterList *TPL, void *&InsertPos) {
506 return findSpecializationImpl(getPartialSpecializations(), InsertPos, Args,
507 TPL);
508}
509
510static void ProfileTemplateParameterList(ASTContext &C,
511 llvm::FoldingSetNodeID &ID, const TemplateParameterList *TPL) {
512 const Expr *RC = TPL->getRequiresClause();
513 ID.AddBoolean(RC != nullptr);
514 if (RC)
515 RC->Profile(ID, C, /*Canonical=*/true);
516 ID.AddInteger(TPL->size());
517 for (NamedDecl *D : *TPL) {
518 if (const auto *NTTP = dyn_cast<NonTypeTemplateParmDecl>(D)) {
519 ID.AddInteger(0);
520 ID.AddBoolean(NTTP->isParameterPack());
521 NTTP->getType().getCanonicalType().Profile(ID);
522 continue;
523 }
524 if (const auto *TTP = dyn_cast<TemplateTypeParmDecl>(D)) {
525 ID.AddInteger(1);
526 ID.AddBoolean(TTP->isParameterPack());
527 ID.AddBoolean(TTP->hasTypeConstraint());
528 if (const TypeConstraint *TC = TTP->getTypeConstraint())
529 TC->getImmediatelyDeclaredConstraint()->Profile(ID, C,
530 /*Canonical=*/true);
531 continue;
532 }
533 const auto *TTP = cast<TemplateTemplateParmDecl>(D);
534 ID.AddInteger(2);
535 ID.AddBoolean(TTP->isParameterPack());
536 ProfileTemplateParameterList(C, ID, TTP->getTemplateParameters());
537 }
538}
539
540void
541ClassTemplatePartialSpecializationDecl::Profile(llvm::FoldingSetNodeID &ID,
542 ArrayRef<TemplateArgument> TemplateArgs, TemplateParameterList *TPL,
543 ASTContext &Context) {
544 ID.AddInteger(TemplateArgs.size());
545 for (const TemplateArgument &TemplateArg : TemplateArgs)
546 TemplateArg.Profile(ID, Context);
547 ProfileTemplateParameterList(Context, ID, TPL);
548}
549
550void ClassTemplateDecl::AddPartialSpecialization(
551 ClassTemplatePartialSpecializationDecl *D,
552 void *InsertPos) {
553 if (InsertPos)
554 getPartialSpecializations().InsertNode(D, InsertPos);
555 else {
556 ClassTemplatePartialSpecializationDecl *Existing
557 = getPartialSpecializations().GetOrInsertNode(D);
558 (void)Existing;
559 assert(Existing->isCanonicalDecl() && "Non-canonical specialization?")(static_cast <bool> (Existing->isCanonicalDecl() &&
"Non-canonical specialization?") ? void (0) : __assert_fail (
"Existing->isCanonicalDecl() && \"Non-canonical specialization?\""
, "clang/lib/AST/DeclTemplate.cpp", 559, __extension__ __PRETTY_FUNCTION__
));
560 }
561
562 if (ASTMutationListener *L = getASTMutationListener())
563 L->AddedCXXTemplateSpecialization(this, D);
564}
565
566void ClassTemplateDecl::getPartialSpecializations(
567 SmallVectorImpl<ClassTemplatePartialSpecializationDecl *> &PS) const {
568 llvm::FoldingSetVector<ClassTemplatePartialSpecializationDecl> &PartialSpecs
569 = getPartialSpecializations();
570 PS.clear();
571 PS.reserve(PartialSpecs.size());
572 for (ClassTemplatePartialSpecializationDecl &P : PartialSpecs)
573 PS.push_back(P.getMostRecentDecl());
574}
575
576ClassTemplatePartialSpecializationDecl *
577ClassTemplateDecl::findPartialSpecialization(QualType T) {
578 ASTContext &Context = getASTContext();
579 for (ClassTemplatePartialSpecializationDecl &P :
580 getPartialSpecializations()) {
581 if (Context.hasSameType(P.getInjectedSpecializationType(), T))
582 return P.getMostRecentDecl();
583 }
584
585 return nullptr;
586}
587
588ClassTemplatePartialSpecializationDecl *
589ClassTemplateDecl::findPartialSpecInstantiatedFromMember(
590 ClassTemplatePartialSpecializationDecl *D) {
591 Decl *DCanon = D->getCanonicalDecl();
592 for (ClassTemplatePartialSpecializationDecl &P : getPartialSpecializations()) {
593 if (P.getInstantiatedFromMember()->getCanonicalDecl() == DCanon)
594 return P.getMostRecentDecl();
595 }
596
597 return nullptr;
598}
599
600QualType
601ClassTemplateDecl::getInjectedClassNameSpecialization() {
602 Common *CommonPtr = getCommonPtr();
603 if (!CommonPtr->InjectedClassNameType.isNull())
604 return CommonPtr->InjectedClassNameType;
605
606 // C++0x [temp.dep.type]p2:
607 // The template argument list of a primary template is a template argument
608 // list in which the nth template argument has the value of the nth template
609 // parameter of the class template. If the nth template parameter is a
610 // template parameter pack (14.5.3), the nth template argument is a pack
611 // expansion (14.5.3) whose pattern is the name of the template parameter
612 // pack.
613 ASTContext &Context = getASTContext();
614 TemplateParameterList *Params = getTemplateParameters();
615 SmallVector<TemplateArgument, 16> TemplateArgs;
616 Context.getInjectedTemplateArgs(Params, TemplateArgs);
617 CommonPtr->InjectedClassNameType
618 = Context.getTemplateSpecializationType(TemplateName(this),
619 TemplateArgs);
620 return CommonPtr->InjectedClassNameType;
621}
622
623//===----------------------------------------------------------------------===//
624// TemplateTypeParm Allocation/Deallocation Method Implementations
625//===----------------------------------------------------------------------===//
626
627TemplateTypeParmDecl *
628TemplateTypeParmDecl::Create(const ASTContext &C, DeclContext *DC,
629 SourceLocation KeyLoc, SourceLocation NameLoc,
630 unsigned D, unsigned P, IdentifierInfo *Id,
631 bool Typename, bool ParameterPack,
632 bool HasTypeConstraint,
633 Optional<unsigned> NumExpanded) {
634 auto *TTPDecl =
635 new (C, DC,
636 additionalSizeToAlloc<TypeConstraint>(HasTypeConstraint ? 1 : 0))
637 TemplateTypeParmDecl(DC, KeyLoc, NameLoc, Id, Typename,
638 HasTypeConstraint, NumExpanded);
639 QualType TTPType = C.getTemplateTypeParmType(D, P, ParameterPack, TTPDecl);
640 TTPDecl->setTypeForDecl(TTPType.getTypePtr());
641 return TTPDecl;
642}
643
644TemplateTypeParmDecl *
645TemplateTypeParmDecl::CreateDeserialized(const ASTContext &C, unsigned ID) {
646 return new (C, ID) TemplateTypeParmDecl(nullptr, SourceLocation(),
647 SourceLocation(), nullptr, false,
648 false, None);
649}
650
651TemplateTypeParmDecl *
652TemplateTypeParmDecl::CreateDeserialized(const ASTContext &C, unsigned ID,
653 bool HasTypeConstraint) {
654 return new (C, ID,
655 additionalSizeToAlloc<TypeConstraint>(HasTypeConstraint ? 1 : 0))
656 TemplateTypeParmDecl(nullptr, SourceLocation(), SourceLocation(),
657 nullptr, false, HasTypeConstraint, None);
658}
659
660SourceLocation TemplateTypeParmDecl::getDefaultArgumentLoc() const {
661 return hasDefaultArgument()
662 ? getDefaultArgumentInfo()->getTypeLoc().getBeginLoc()
663 : SourceLocation();
664}
665
666SourceRange TemplateTypeParmDecl::getSourceRange() const {
667 if (hasDefaultArgument() && !defaultArgumentWasInherited())
668 return SourceRange(getBeginLoc(),
669 getDefaultArgumentInfo()->getTypeLoc().getEndLoc());
670 // TypeDecl::getSourceRange returns a range containing name location, which is
671 // wrong for unnamed template parameters. e.g:
672 // it will return <[[typename>]] instead of <[[typename]]>
673 else if (getDeclName().isEmpty())
674 return SourceRange(getBeginLoc());
675 return TypeDecl::getSourceRange();
676}
677
678unsigned TemplateTypeParmDecl::getDepth() const {
679 return getTypeForDecl()->castAs<TemplateTypeParmType>()->getDepth();
680}
681
682unsigned TemplateTypeParmDecl::getIndex() const {
683 return getTypeForDecl()->castAs<TemplateTypeParmType>()->getIndex();
684}
685
686bool TemplateTypeParmDecl::isParameterPack() const {
687 return getTypeForDecl()->castAs<TemplateTypeParmType>()->isParameterPack();
688}
689
690void TemplateTypeParmDecl::setTypeConstraint(NestedNameSpecifierLoc NNS,
691 DeclarationNameInfo NameInfo, NamedDecl *FoundDecl, ConceptDecl *CD,
692 const ASTTemplateArgumentListInfo *ArgsAsWritten,
693 Expr *ImmediatelyDeclaredConstraint) {
694 assert(HasTypeConstraint &&(static_cast <bool> (HasTypeConstraint && "HasTypeConstraint=true must be passed at construction in order to "
"call setTypeConstraint") ? void (0) : __assert_fail ("HasTypeConstraint && \"HasTypeConstraint=true must be passed at construction in order to \" \"call setTypeConstraint\""
, "clang/lib/AST/DeclTemplate.cpp", 696, __extension__ __PRETTY_FUNCTION__
))
695 "HasTypeConstraint=true must be passed at construction in order to "(static_cast <bool> (HasTypeConstraint && "HasTypeConstraint=true must be passed at construction in order to "
"call setTypeConstraint") ? void (0) : __assert_fail ("HasTypeConstraint && \"HasTypeConstraint=true must be passed at construction in order to \" \"call setTypeConstraint\""
, "clang/lib/AST/DeclTemplate.cpp", 696, __extension__ __PRETTY_FUNCTION__
))
696 "call setTypeConstraint")(static_cast <bool> (HasTypeConstraint && "HasTypeConstraint=true must be passed at construction in order to "
"call setTypeConstraint") ? void (0) : __assert_fail ("HasTypeConstraint && \"HasTypeConstraint=true must be passed at construction in order to \" \"call setTypeConstraint\""
, "clang/lib/AST/DeclTemplate.cpp", 696, __extension__ __PRETTY_FUNCTION__
));
697 assert(!TypeConstraintInitialized &&(static_cast <bool> (!TypeConstraintInitialized &&
"TypeConstraint was already initialized!") ? void (0) : __assert_fail
("!TypeConstraintInitialized && \"TypeConstraint was already initialized!\""
, "clang/lib/AST/DeclTemplate.cpp", 698, __extension__ __PRETTY_FUNCTION__
))
698 "TypeConstraint was already initialized!")(static_cast <bool> (!TypeConstraintInitialized &&
"TypeConstraint was already initialized!") ? void (0) : __assert_fail
("!TypeConstraintInitialized && \"TypeConstraint was already initialized!\""
, "clang/lib/AST/DeclTemplate.cpp", 698, __extension__ __PRETTY_FUNCTION__
));
699 new (getTrailingObjects<TypeConstraint>()) TypeConstraint(NNS, NameInfo,
700 FoundDecl, CD, ArgsAsWritten, ImmediatelyDeclaredConstraint);
701 TypeConstraintInitialized = true;
702}
703
704//===----------------------------------------------------------------------===//
705// NonTypeTemplateParmDecl Method Implementations
706//===----------------------------------------------------------------------===//
707
708NonTypeTemplateParmDecl::NonTypeTemplateParmDecl(
709 DeclContext *DC, SourceLocation StartLoc, SourceLocation IdLoc, unsigned D,
710 unsigned P, IdentifierInfo *Id, QualType T, TypeSourceInfo *TInfo,
711 ArrayRef<QualType> ExpandedTypes, ArrayRef<TypeSourceInfo *> ExpandedTInfos)
712 : DeclaratorDecl(NonTypeTemplateParm, DC, IdLoc, Id, T, TInfo, StartLoc),
713 TemplateParmPosition(D, P), ParameterPack(true),
714 ExpandedParameterPack(true), NumExpandedTypes(ExpandedTypes.size()) {
715 if (!ExpandedTypes.empty() && !ExpandedTInfos.empty()) {
716 auto TypesAndInfos =
717 getTrailingObjects<std::pair<QualType, TypeSourceInfo *>>();
718 for (unsigned I = 0; I != NumExpandedTypes; ++I) {
719 new (&TypesAndInfos[I].first) QualType(ExpandedTypes[I]);
720 TypesAndInfos[I].second = ExpandedTInfos[I];
721 }
722 }
723}
724
725NonTypeTemplateParmDecl *
726NonTypeTemplateParmDecl::Create(const ASTContext &C, DeclContext *DC,
727 SourceLocation StartLoc, SourceLocation IdLoc,
728 unsigned D, unsigned P, IdentifierInfo *Id,
729 QualType T, bool ParameterPack,
730 TypeSourceInfo *TInfo) {
731 AutoType *AT =
732 C.getLangOpts().CPlusPlus20 ? T->getContainedAutoType() : nullptr;
733 return new (C, DC,
734 additionalSizeToAlloc<std::pair<QualType, TypeSourceInfo *>,
735 Expr *>(0,
736 AT && AT->isConstrained() ? 1 : 0))
737 NonTypeTemplateParmDecl(DC, StartLoc, IdLoc, D, P, Id, T, ParameterPack,
738 TInfo);
739}
740
741NonTypeTemplateParmDecl *NonTypeTemplateParmDecl::Create(
742 const ASTContext &C, DeclContext *DC, SourceLocation StartLoc,
743 SourceLocation IdLoc, unsigned D, unsigned P, IdentifierInfo *Id,
744 QualType T, TypeSourceInfo *TInfo, ArrayRef<QualType> ExpandedTypes,
745 ArrayRef<TypeSourceInfo *> ExpandedTInfos) {
746 AutoType *AT = TInfo->getType()->getContainedAutoType();
747 return new (C, DC,
748 additionalSizeToAlloc<std::pair<QualType, TypeSourceInfo *>,
749 Expr *>(
750 ExpandedTypes.size(), AT && AT->isConstrained() ? 1 : 0))
751 NonTypeTemplateParmDecl(DC, StartLoc, IdLoc, D, P, Id, T, TInfo,
752 ExpandedTypes, ExpandedTInfos);
753}
754
755NonTypeTemplateParmDecl *
756NonTypeTemplateParmDecl::CreateDeserialized(ASTContext &C, unsigned ID,
757 bool HasTypeConstraint) {
758 return new (C, ID, additionalSizeToAlloc<std::pair<QualType,
759 TypeSourceInfo *>,
760 Expr *>(0,
761 HasTypeConstraint ? 1 : 0))
762 NonTypeTemplateParmDecl(nullptr, SourceLocation(), SourceLocation(),
763 0, 0, nullptr, QualType(), false, nullptr);
764}
765
766NonTypeTemplateParmDecl *
767NonTypeTemplateParmDecl::CreateDeserialized(ASTContext &C, unsigned ID,
768 unsigned NumExpandedTypes,
769 bool HasTypeConstraint) {
770 auto *NTTP =
771 new (C, ID, additionalSizeToAlloc<std::pair<QualType, TypeSourceInfo *>,
772 Expr *>(
773 NumExpandedTypes, HasTypeConstraint ? 1 : 0))
774 NonTypeTemplateParmDecl(nullptr, SourceLocation(), SourceLocation(),
775 0, 0, nullptr, QualType(), nullptr, None,
776 None);
777 NTTP->NumExpandedTypes = NumExpandedTypes;
778 return NTTP;
779}
780
781SourceRange NonTypeTemplateParmDecl::getSourceRange() const {
782 if (hasDefaultArgument() && !defaultArgumentWasInherited())
783 return SourceRange(getOuterLocStart(),
784 getDefaultArgument()->getSourceRange().getEnd());
785 return DeclaratorDecl::getSourceRange();
786}
787
788SourceLocation NonTypeTemplateParmDecl::getDefaultArgumentLoc() const {
789 return hasDefaultArgument()
790 ? getDefaultArgument()->getSourceRange().getBegin()
791 : SourceLocation();
792}
793
794//===----------------------------------------------------------------------===//
795// TemplateTemplateParmDecl Method Implementations
796//===----------------------------------------------------------------------===//
797
798void TemplateTemplateParmDecl::anchor() {}
799
800TemplateTemplateParmDecl::TemplateTemplateParmDecl(
801 DeclContext *DC, SourceLocation L, unsigned D, unsigned P,
802 IdentifierInfo *Id, TemplateParameterList *Params,
803 ArrayRef<TemplateParameterList *> Expansions)
804 : TemplateDecl(TemplateTemplateParm, DC, L, Id, Params),
805 TemplateParmPosition(D, P), ParameterPack(true),
806 ExpandedParameterPack(true), NumExpandedParams(Expansions.size()) {
807 if (!Expansions.empty())
808 std::uninitialized_copy(Expansions.begin(), Expansions.end(),
809 getTrailingObjects<TemplateParameterList *>());
810}
811
812TemplateTemplateParmDecl *
813TemplateTemplateParmDecl::Create(const ASTContext &C, DeclContext *DC,
814 SourceLocation L, unsigned D, unsigned P,
815 bool ParameterPack, IdentifierInfo *Id,
816 TemplateParameterList *Params) {
817 return new (C, DC) TemplateTemplateParmDecl(DC, L, D, P, ParameterPack, Id,
818 Params);
819}
820
821TemplateTemplateParmDecl *
822TemplateTemplateParmDecl::Create(const ASTContext &C, DeclContext *DC,
823 SourceLocation L, unsigned D, unsigned P,
824 IdentifierInfo *Id,
825 TemplateParameterList *Params,
826 ArrayRef<TemplateParameterList *> Expansions) {
827 return new (C, DC,
828 additionalSizeToAlloc<TemplateParameterList *>(Expansions.size()))
829 TemplateTemplateParmDecl(DC, L, D, P, Id, Params, Expansions);
830}
831
832TemplateTemplateParmDecl *
833TemplateTemplateParmDecl::CreateDeserialized(ASTContext &C, unsigned ID) {
834 return new (C, ID) TemplateTemplateParmDecl(nullptr, SourceLocation(), 0, 0,
835 false, nullptr, nullptr);
836}
837
838TemplateTemplateParmDecl *
839TemplateTemplateParmDecl::CreateDeserialized(ASTContext &C, unsigned ID,
840 unsigned NumExpansions) {
841 auto *TTP =
842 new (C, ID, additionalSizeToAlloc<TemplateParameterList *>(NumExpansions))
843 TemplateTemplateParmDecl(nullptr, SourceLocation(), 0, 0, nullptr,
844 nullptr, None);
845 TTP->NumExpandedParams = NumExpansions;
846 return TTP;
847}
848
849SourceLocation TemplateTemplateParmDecl::getDefaultArgumentLoc() const {
850 return hasDefaultArgument() ? getDefaultArgument().getLocation()
851 : SourceLocation();
852}
853
854void TemplateTemplateParmDecl::setDefaultArgument(
855 const ASTContext &C, const TemplateArgumentLoc &DefArg) {
856 if (DefArg.getArgument().isNull())
857 DefaultArgument.set(nullptr);
858 else
859 DefaultArgument.set(new (C) TemplateArgumentLoc(DefArg));
860}
861
862//===----------------------------------------------------------------------===//
863// TemplateArgumentList Implementation
864//===----------------------------------------------------------------------===//
865TemplateArgumentList::TemplateArgumentList(ArrayRef<TemplateArgument> Args)
866 : Arguments(getTrailingObjects<TemplateArgument>()),
867 NumArguments(Args.size()) {
868 std::uninitialized_copy(Args.begin(), Args.end(),
869 getTrailingObjects<TemplateArgument>());
870}
871
872TemplateArgumentList *
873TemplateArgumentList::CreateCopy(ASTContext &Context,
874 ArrayRef<TemplateArgument> Args) {
875 void *Mem = Context.Allocate(totalSizeToAlloc<TemplateArgument>(Args.size()));
876 return new (Mem) TemplateArgumentList(Args);
877}
878
879FunctionTemplateSpecializationInfo *FunctionTemplateSpecializationInfo::Create(
880 ASTContext &C, FunctionDecl *FD, FunctionTemplateDecl *Template,
881 TemplateSpecializationKind TSK, const TemplateArgumentList *TemplateArgs,
882 const TemplateArgumentListInfo *TemplateArgsAsWritten, SourceLocation POI,
883 MemberSpecializationInfo *MSInfo) {
884 const ASTTemplateArgumentListInfo *ArgsAsWritten = nullptr;
885 if (TemplateArgsAsWritten)
886 ArgsAsWritten = ASTTemplateArgumentListInfo::Create(C,
887 *TemplateArgsAsWritten);
888
889 void *Mem =
890 C.Allocate(totalSizeToAlloc<MemberSpecializationInfo *>(MSInfo ? 1 : 0));
891 return new (Mem) FunctionTemplateSpecializationInfo(
892 FD, Template, TSK, TemplateArgs, ArgsAsWritten, POI, MSInfo);
893}
894
895//===----------------------------------------------------------------------===//
896// ClassTemplateSpecializationDecl Implementation
897//===----------------------------------------------------------------------===//
898
899ClassTemplateSpecializationDecl::
900ClassTemplateSpecializationDecl(ASTContext &Context, Kind DK, TagKind TK,
901 DeclContext *DC, SourceLocation StartLoc,
902 SourceLocation IdLoc,
903 ClassTemplateDecl *SpecializedTemplate,
904 ArrayRef<TemplateArgument> Args,
905 ClassTemplateSpecializationDecl *PrevDecl)
906 : CXXRecordDecl(DK, TK, Context, DC, StartLoc, IdLoc,
907 SpecializedTemplate->getIdentifier(), PrevDecl),
908 SpecializedTemplate(SpecializedTemplate),
909 TemplateArgs(TemplateArgumentList::CreateCopy(Context, Args)),
910 SpecializationKind(TSK_Undeclared) {
911}
912
913ClassTemplateSpecializationDecl::ClassTemplateSpecializationDecl(ASTContext &C,
914 Kind DK)
915 : CXXRecordDecl(DK, TTK_Struct, C, nullptr, SourceLocation(),
916 SourceLocation(), nullptr, nullptr),
917 SpecializationKind(TSK_Undeclared) {}
918
919ClassTemplateSpecializationDecl *
920ClassTemplateSpecializationDecl::Create(ASTContext &Context, TagKind TK,
921 DeclContext *DC,
922 SourceLocation StartLoc,
923 SourceLocation IdLoc,
924 ClassTemplateDecl *SpecializedTemplate,
925 ArrayRef<TemplateArgument> Args,
926 ClassTemplateSpecializationDecl *PrevDecl) {
927 auto *Result =
928 new (Context, DC) ClassTemplateSpecializationDecl(
929 Context, ClassTemplateSpecialization, TK, DC, StartLoc, IdLoc,
930 SpecializedTemplate, Args, PrevDecl);
931 Result->setMayHaveOutOfDateDef(false);
932
933 Context.getTypeDeclType(Result, PrevDecl);
934 return Result;
935}
936
937ClassTemplateSpecializationDecl *
938ClassTemplateSpecializationDecl::CreateDeserialized(ASTContext &C,
939 unsigned ID) {
940 auto *Result =
941 new (C, ID) ClassTemplateSpecializationDecl(C, ClassTemplateSpecialization);
942 Result->setMayHaveOutOfDateDef(false);
943 return Result;
944}
945
946void ClassTemplateSpecializationDecl::getNameForDiagnostic(
947 raw_ostream &OS, const PrintingPolicy &Policy, bool Qualified) const {
948 NamedDecl::getNameForDiagnostic(OS, Policy, Qualified);
949
950 const auto *PS = dyn_cast<ClassTemplatePartialSpecializationDecl>(this);
951 if (const ASTTemplateArgumentListInfo *ArgsAsWritten =
952 PS ? PS->getTemplateArgsAsWritten() : nullptr) {
953 printTemplateArgumentList(
954 OS, ArgsAsWritten->arguments(), Policy,
955 getSpecializedTemplate()->getTemplateParameters());
956 } else {
957 const TemplateArgumentList &TemplateArgs = getTemplateArgs();
958 printTemplateArgumentList(
959 OS, TemplateArgs.asArray(), Policy,
960 getSpecializedTemplate()->getTemplateParameters());
961 }
962}
963
964ClassTemplateDecl *
965ClassTemplateSpecializationDecl::getSpecializedTemplate() const {
966 if (const auto *PartialSpec =
967 SpecializedTemplate.dyn_cast<SpecializedPartialSpecialization*>())
968 return PartialSpec->PartialSpecialization->getSpecializedTemplate();
969 return SpecializedTemplate.get<ClassTemplateDecl*>();
970}
971
972SourceRange
973ClassTemplateSpecializationDecl::getSourceRange() const {
974 if (ExplicitInfo) {
975 SourceLocation Begin = getTemplateKeywordLoc();
976 if (Begin.isValid()) {
977 // Here we have an explicit (partial) specialization or instantiation.
978 assert(getSpecializationKind() == TSK_ExplicitSpecialization ||(static_cast <bool> (getSpecializationKind() == TSK_ExplicitSpecialization
|| getSpecializationKind() == TSK_ExplicitInstantiationDeclaration
|| getSpecializationKind() == TSK_ExplicitInstantiationDefinition
) ? void (0) : __assert_fail ("getSpecializationKind() == TSK_ExplicitSpecialization || getSpecializationKind() == TSK_ExplicitInstantiationDeclaration || getSpecializationKind() == TSK_ExplicitInstantiationDefinition"
, "clang/lib/AST/DeclTemplate.cpp", 980, __extension__ __PRETTY_FUNCTION__
))
979 getSpecializationKind() == TSK_ExplicitInstantiationDeclaration ||(static_cast <bool> (getSpecializationKind() == TSK_ExplicitSpecialization
|| getSpecializationKind() == TSK_ExplicitInstantiationDeclaration
|| getSpecializationKind() == TSK_ExplicitInstantiationDefinition
) ? void (0) : __assert_fail ("getSpecializationKind() == TSK_ExplicitSpecialization || getSpecializationKind() == TSK_ExplicitInstantiationDeclaration || getSpecializationKind() == TSK_ExplicitInstantiationDefinition"
, "clang/lib/AST/DeclTemplate.cpp", 980, __extension__ __PRETTY_FUNCTION__
))
980 getSpecializationKind() == TSK_ExplicitInstantiationDefinition)(static_cast <bool> (getSpecializationKind() == TSK_ExplicitSpecialization
|| getSpecializationKind() == TSK_ExplicitInstantiationDeclaration
|| getSpecializationKind() == TSK_ExplicitInstantiationDefinition
) ? void (0) : __assert_fail ("getSpecializationKind() == TSK_ExplicitSpecialization || getSpecializationKind() == TSK_ExplicitInstantiationDeclaration || getSpecializationKind() == TSK_ExplicitInstantiationDefinition"
, "clang/lib/AST/DeclTemplate.cpp", 980, __extension__ __PRETTY_FUNCTION__
));
981 if (getExternLoc().isValid())
982 Begin = getExternLoc();
983 SourceLocation End = getBraceRange().getEnd();
984 if (End.isInvalid())
985 End = getTypeAsWritten()->getTypeLoc().getEndLoc();
986 return SourceRange(Begin, End);
987 }
988 // An implicit instantiation of a class template partial specialization
989 // uses ExplicitInfo to record the TypeAsWritten, but the source
990 // locations should be retrieved from the instantiation pattern.
991 using CTPSDecl = ClassTemplatePartialSpecializationDecl;
992 auto *ctpsd = const_cast<CTPSDecl *>(cast<CTPSDecl>(this));
993 CTPSDecl *inst_from = ctpsd->getInstantiatedFromMember();
994 assert(inst_from != nullptr)(static_cast <bool> (inst_from != nullptr) ? void (0) :
__assert_fail ("inst_from != nullptr", "clang/lib/AST/DeclTemplate.cpp"
, 994, __extension__ __PRETTY_FUNCTION__));
995 return inst_from->getSourceRange();
996 }
997 else {
998 // No explicit info available.
999 llvm::PointerUnion<ClassTemplateDecl *,
1000 ClassTemplatePartialSpecializationDecl *>
1001 inst_from = getInstantiatedFrom();
1002 if (inst_from.isNull())
1003 return getSpecializedTemplate()->getSourceRange();
1004 if (const auto *ctd = inst_from.dyn_cast<ClassTemplateDecl *>())
1005 return ctd->getSourceRange();
1006 return inst_from.get<ClassTemplatePartialSpecializationDecl *>()
1007 ->getSourceRange();
1008 }
1009}
1010
1011//===----------------------------------------------------------------------===//
1012// ConceptDecl Implementation
1013//===----------------------------------------------------------------------===//
1014ConceptDecl *ConceptDecl::Create(ASTContext &C, DeclContext *DC,
1015 SourceLocation L, DeclarationName Name,
1016 TemplateParameterList *Params,
1017 Expr *ConstraintExpr) {
1018 bool Invalid = AdoptTemplateParameterList(Params, DC);
1019 auto *TD = new (C, DC) ConceptDecl(DC, L, Name, Params, ConstraintExpr);
1020 if (Invalid)
1021 TD->setInvalidDecl();
1022 return TD;
1023}
1024
1025ConceptDecl *ConceptDecl::CreateDeserialized(ASTContext &C,
1026 unsigned ID) {
1027 ConceptDecl *Result = new (C, ID) ConceptDecl(nullptr, SourceLocation(),
1028 DeclarationName(),
1029 nullptr, nullptr);
1030
1031 return Result;
1032}
1033
1034//===----------------------------------------------------------------------===//
1035// ClassTemplatePartialSpecializationDecl Implementation
1036//===----------------------------------------------------------------------===//
1037void ClassTemplatePartialSpecializationDecl::anchor() {}
1038
1039ClassTemplatePartialSpecializationDecl::
1040ClassTemplatePartialSpecializationDecl(ASTContext &Context, TagKind TK,
1041 DeclContext *DC,
1042 SourceLocation StartLoc,
1043 SourceLocation IdLoc,
1044 TemplateParameterList *Params,
1045 ClassTemplateDecl *SpecializedTemplate,
1046 ArrayRef<TemplateArgument> Args,
1047 const ASTTemplateArgumentListInfo *ArgInfos,
1048 ClassTemplatePartialSpecializationDecl *PrevDecl)
1049 : ClassTemplateSpecializationDecl(Context,
1050 ClassTemplatePartialSpecialization,
1051 TK, DC, StartLoc, IdLoc,
1052 SpecializedTemplate, Args, PrevDecl),
1053 TemplateParams(Params), ArgsAsWritten(ArgInfos),
1054 InstantiatedFromMember(nullptr, false) {
1055 if (AdoptTemplateParameterList(Params, this))
1056 setInvalidDecl();
1057}
1058
1059ClassTemplatePartialSpecializationDecl *
1060ClassTemplatePartialSpecializationDecl::
1061Create(ASTContext &Context, TagKind TK,DeclContext *DC,
1062 SourceLocation StartLoc, SourceLocation IdLoc,
1063 TemplateParameterList *Params,
1064 ClassTemplateDecl *SpecializedTemplate,
1065 ArrayRef<TemplateArgument> Args,
1066 const TemplateArgumentListInfo &ArgInfos,
1067 QualType CanonInjectedType,
1068 ClassTemplatePartialSpecializationDecl *PrevDecl) {
1069 const ASTTemplateArgumentListInfo *ASTArgInfos =
1070 ASTTemplateArgumentListInfo::Create(Context, ArgInfos);
1071
1072 auto *Result = new (Context, DC)
1073 ClassTemplatePartialSpecializationDecl(Context, TK, DC, StartLoc, IdLoc,
1074 Params, SpecializedTemplate, Args,
1075 ASTArgInfos, PrevDecl);
1076 Result->setSpecializationKind(TSK_ExplicitSpecialization);
1077 Result->setMayHaveOutOfDateDef(false);
1078
1079 Context.getInjectedClassNameType(Result, CanonInjectedType);
1080 return Result;
1081}
1082
1083ClassTemplatePartialSpecializationDecl *
1084ClassTemplatePartialSpecializationDecl::CreateDeserialized(ASTContext &C,
1085 unsigned ID) {
1086 auto *Result = new (C, ID) ClassTemplatePartialSpecializationDecl(C);
1087 Result->setMayHaveOutOfDateDef(false);
1088 return Result;
1089}
1090
1091//===----------------------------------------------------------------------===//
1092// FriendTemplateDecl Implementation
1093//===----------------------------------------------------------------------===//
1094
1095void FriendTemplateDecl::anchor() {}
1096
1097FriendTemplateDecl *
1098FriendTemplateDecl::Create(ASTContext &Context, DeclContext *DC,
1099 SourceLocation L,
1100 MutableArrayRef<TemplateParameterList *> Params,
1101 FriendUnion Friend, SourceLocation FLoc) {
1102 TemplateParameterList **TPL = nullptr;
1103 if (!Params.empty()) {
1104 TPL = new (Context) TemplateParameterList *[Params.size()];
1105 llvm::copy(Params, TPL);
1106 }
1107 return new (Context, DC)
1108 FriendTemplateDecl(DC, L, TPL, Params.size(), Friend, FLoc);
1109}
1110
1111FriendTemplateDecl *FriendTemplateDecl::CreateDeserialized(ASTContext &C,
1112 unsigned ID) {
1113 return new (C, ID) FriendTemplateDecl(EmptyShell());
1114}
1115
1116//===----------------------------------------------------------------------===//
1117// TypeAliasTemplateDecl Implementation
1118//===----------------------------------------------------------------------===//
1119
1120TypeAliasTemplateDecl *
1121TypeAliasTemplateDecl::Create(ASTContext &C, DeclContext *DC, SourceLocation L,
1122 DeclarationName Name,
1123 TemplateParameterList *Params, NamedDecl *Decl) {
1124 bool Invalid = AdoptTemplateParameterList(Params, DC);
1125 auto *TD = new (C, DC) TypeAliasTemplateDecl(C, DC, L, Name, Params, Decl);
1126 if (Invalid)
1127 TD->setInvalidDecl();
1128 return TD;
1129}
1130
1131TypeAliasTemplateDecl *TypeAliasTemplateDecl::CreateDeserialized(ASTContext &C,
1132 unsigned ID) {
1133 return new (C, ID) TypeAliasTemplateDecl(C, nullptr, SourceLocation(),
1134 DeclarationName(), nullptr, nullptr);
1135}
1136
1137RedeclarableTemplateDecl::CommonBase *
1138TypeAliasTemplateDecl::newCommon(ASTContext &C) const {
1139 auto *CommonPtr = new (C) Common;
1140 C.addDestruction(CommonPtr);
1141 return CommonPtr;
1142}
1143
1144//===----------------------------------------------------------------------===//
1145// ClassScopeFunctionSpecializationDecl Implementation
1146//===----------------------------------------------------------------------===//
1147
1148void ClassScopeFunctionSpecializationDecl::anchor() {}
1149
1150ClassScopeFunctionSpecializationDecl *
1151ClassScopeFunctionSpecializationDecl::CreateDeserialized(ASTContext &C,
1152 unsigned ID) {
1153 return new (C, ID) ClassScopeFunctionSpecializationDecl(
1154 nullptr, SourceLocation(), nullptr, nullptr);
1155}
1156
1157//===----------------------------------------------------------------------===//
1158// VarTemplateDecl Implementation
1159//===----------------------------------------------------------------------===//
1160
1161VarTemplateDecl *VarTemplateDecl::getDefinition() {
1162 VarTemplateDecl *CurD = this;
1163 while (CurD) {
1164 if (CurD->isThisDeclarationADefinition())
1165 return CurD;
1166 CurD = CurD->getPreviousDecl();
1167 }
1168 return nullptr;
1169}
1170
1171VarTemplateDecl *VarTemplateDecl::Create(ASTContext &C, DeclContext *DC,
1172 SourceLocation L, DeclarationName Name,
1173 TemplateParameterList *Params,
1174 VarDecl *Decl) {
1175 bool Invalid = AdoptTemplateParameterList(Params, DC);
1176 auto *TD = new (C, DC) VarTemplateDecl(C, DC, L, Name, Params, Decl);
1177 if (Invalid)
1178 TD->setInvalidDecl();
1179 return TD;
1180}
1181
1182VarTemplateDecl *VarTemplateDecl::CreateDeserialized(ASTContext &C,
1183 unsigned ID) {
1184 return new (C, ID) VarTemplateDecl(C, nullptr, SourceLocation(),
1185 DeclarationName(), nullptr, nullptr);
1186}
1187
1188void VarTemplateDecl::LoadLazySpecializations() const {
1189 loadLazySpecializationsImpl();
1190}
1191
1192llvm::FoldingSetVector<VarTemplateSpecializationDecl> &
1193VarTemplateDecl::getSpecializations() const {
1194 LoadLazySpecializations();
1195 return getCommonPtr()->Specializations;
1196}
1197
1198llvm::FoldingSetVector<VarTemplatePartialSpecializationDecl> &
1199VarTemplateDecl::getPartialSpecializations() const {
1200 LoadLazySpecializations();
1201 return getCommonPtr()->PartialSpecializations;
1202}
1203
1204RedeclarableTemplateDecl::CommonBase *
1205VarTemplateDecl::newCommon(ASTContext &C) const {
1206 auto *CommonPtr = new (C) Common;
1207 C.addDestruction(CommonPtr);
1208 return CommonPtr;
1209}
1210
1211VarTemplateSpecializationDecl *
1212VarTemplateDecl::findSpecialization(ArrayRef<TemplateArgument> Args,
1213 void *&InsertPos) {
1214 return findSpecializationImpl(getSpecializations(), InsertPos, Args);
1215}
1216
1217void VarTemplateDecl::AddSpecialization(VarTemplateSpecializationDecl *D,
1218 void *InsertPos) {
1219 addSpecializationImpl<VarTemplateDecl>(getSpecializations(), D, InsertPos);
1220}
1221
1222VarTemplatePartialSpecializationDecl *
1223VarTemplateDecl::findPartialSpecialization(ArrayRef<TemplateArgument> Args,
1224 TemplateParameterList *TPL, void *&InsertPos) {
1225 return findSpecializationImpl(getPartialSpecializations(), InsertPos, Args,
1226 TPL);
1227}
1228
1229void
1230VarTemplatePartialSpecializationDecl::Profile(llvm::FoldingSetNodeID &ID,
1231 ArrayRef<TemplateArgument> TemplateArgs, TemplateParameterList *TPL,
1232 ASTContext &Context) {
1233 ID.AddInteger(TemplateArgs.size());
1234 for (const TemplateArgument &TemplateArg : TemplateArgs)
1235 TemplateArg.Profile(ID, Context);
1236 ProfileTemplateParameterList(Context, ID, TPL);
1237}
1238
1239void VarTemplateDecl::AddPartialSpecialization(
1240 VarTemplatePartialSpecializationDecl *D, void *InsertPos) {
1241 if (InsertPos)
1242 getPartialSpecializations().InsertNode(D, InsertPos);
1243 else {
1244 VarTemplatePartialSpecializationDecl *Existing =
1245 getPartialSpecializations().GetOrInsertNode(D);
1246 (void)Existing;
1247 assert(Existing->isCanonicalDecl() && "Non-canonical specialization?")(static_cast <bool> (Existing->isCanonicalDecl() &&
"Non-canonical specialization?") ? void (0) : __assert_fail (
"Existing->isCanonicalDecl() && \"Non-canonical specialization?\""
, "clang/lib/AST/DeclTemplate.cpp", 1247, __extension__ __PRETTY_FUNCTION__
));
1248 }
1249
1250 if (ASTMutationListener *L = getASTMutationListener())
1251 L->AddedCXXTemplateSpecialization(this, D);
1252}
1253
1254void VarTemplateDecl::getPartialSpecializations(
1255 SmallVectorImpl<VarTemplatePartialSpecializationDecl *> &PS) const {
1256 llvm::FoldingSetVector<VarTemplatePartialSpecializationDecl> &PartialSpecs =
1257 getPartialSpecializations();
1258 PS.clear();
1259 PS.reserve(PartialSpecs.size());
1260 for (VarTemplatePartialSpecializationDecl &P : PartialSpecs)
1261 PS.push_back(P.getMostRecentDecl());
1262}
1263
1264VarTemplatePartialSpecializationDecl *
1265VarTemplateDecl::findPartialSpecInstantiatedFromMember(
1266 VarTemplatePartialSpecializationDecl *D) {
1267 Decl *DCanon = D->getCanonicalDecl();
1268 for (VarTemplatePartialSpecializationDecl &P : getPartialSpecializations()) {
1269 if (P.getInstantiatedFromMember()->getCanonicalDecl() == DCanon)
1270 return P.getMostRecentDecl();
1271 }
1272
1273 return nullptr;
1274}
1275
1276//===----------------------------------------------------------------------===//
1277// VarTemplateSpecializationDecl Implementation
1278//===----------------------------------------------------------------------===//
1279
1280VarTemplateSpecializationDecl::VarTemplateSpecializationDecl(
1281 Kind DK, ASTContext &Context, DeclContext *DC, SourceLocation StartLoc,
1282 SourceLocation IdLoc, VarTemplateDecl *SpecializedTemplate, QualType T,
1283 TypeSourceInfo *TInfo, StorageClass S, ArrayRef<TemplateArgument> Args)
1284 : VarDecl(DK, Context, DC, StartLoc, IdLoc,
1285 SpecializedTemplate->getIdentifier(), T, TInfo, S),
1286 SpecializedTemplate(SpecializedTemplate),
1287 TemplateArgs(TemplateArgumentList::CreateCopy(Context, Args)),
1288 SpecializationKind(TSK_Undeclared), IsCompleteDefinition(false) {}
1289
1290VarTemplateSpecializationDecl::VarTemplateSpecializationDecl(Kind DK,
1291 ASTContext &C)
1292 : VarDecl(DK, C, nullptr, SourceLocation(), SourceLocation(), nullptr,
1293 QualType(), nullptr, SC_None),
1294 SpecializationKind(TSK_Undeclared), IsCompleteDefinition(false) {}
1295
1296VarTemplateSpecializationDecl *VarTemplateSpecializationDecl::Create(
1297 ASTContext &Context, DeclContext *DC, SourceLocation StartLoc,
1298 SourceLocation IdLoc, VarTemplateDecl *SpecializedTemplate, QualType T,
1299 TypeSourceInfo *TInfo, StorageClass S, ArrayRef<TemplateArgument> Args) {
1300 return new (Context, DC) VarTemplateSpecializationDecl(
1301 VarTemplateSpecialization, Context, DC, StartLoc, IdLoc,
1302 SpecializedTemplate, T, TInfo, S, Args);
1303}
1304
1305VarTemplateSpecializationDecl *
1306VarTemplateSpecializationDecl::CreateDeserialized(ASTContext &C, unsigned ID) {
1307 return new (C, ID)
1308 VarTemplateSpecializationDecl(VarTemplateSpecialization, C);
1309}
1310
1311void VarTemplateSpecializationDecl::getNameForDiagnostic(
1312 raw_ostream &OS, const PrintingPolicy &Policy, bool Qualified) const {
1313 NamedDecl::getNameForDiagnostic(OS, Policy, Qualified);
1314
1315 const auto *PS = dyn_cast<VarTemplatePartialSpecializationDecl>(this);
1316 if (const ASTTemplateArgumentListInfo *ArgsAsWritten =
1317 PS ? PS->getTemplateArgsAsWritten() : nullptr) {
1318 printTemplateArgumentList(
1319 OS, ArgsAsWritten->arguments(), Policy,
1320 getSpecializedTemplate()->getTemplateParameters());
1321 } else {
1322 const TemplateArgumentList &TemplateArgs = getTemplateArgs();
1323 printTemplateArgumentList(
1324 OS, TemplateArgs.asArray(), Policy,
1325 getSpecializedTemplate()->getTemplateParameters());
1326 }
1327}
1328
1329VarTemplateDecl *VarTemplateSpecializationDecl::getSpecializedTemplate() const {
1330 if (const auto *PartialSpec =
1331 SpecializedTemplate.dyn_cast<SpecializedPartialSpecialization *>())
1332 return PartialSpec->PartialSpecialization->getSpecializedTemplate();
1333 return SpecializedTemplate.get<VarTemplateDecl *>();
1334}
1335
1336void VarTemplateSpecializationDecl::setTemplateArgsInfo(
1337 const TemplateArgumentListInfo &ArgsInfo) {
1338 TemplateArgsInfo.setLAngleLoc(ArgsInfo.getLAngleLoc());
1339 TemplateArgsInfo.setRAngleLoc(ArgsInfo.getRAngleLoc());
1340 for (const TemplateArgumentLoc &Loc : ArgsInfo.arguments())
1341 TemplateArgsInfo.addArgument(Loc);
1342}
1343
1344//===----------------------------------------------------------------------===//
1345// VarTemplatePartialSpecializationDecl Implementation
1346//===----------------------------------------------------------------------===//
1347
1348void VarTemplatePartialSpecializationDecl::anchor() {}
1349
1350VarTemplatePartialSpecializationDecl::VarTemplatePartialSpecializationDecl(
1351 ASTContext &Context, DeclContext *DC, SourceLocation StartLoc,
1352 SourceLocation IdLoc, TemplateParameterList *Params,
1353 VarTemplateDecl *SpecializedTemplate, QualType T, TypeSourceInfo *TInfo,
1354 StorageClass S, ArrayRef<TemplateArgument> Args,
1355 const ASTTemplateArgumentListInfo *ArgInfos)
1356 : VarTemplateSpecializationDecl(VarTemplatePartialSpecialization, Context,
1357 DC, StartLoc, IdLoc, SpecializedTemplate, T,
1358 TInfo, S, Args),
1359 TemplateParams(Params), ArgsAsWritten(ArgInfos),
1360 InstantiatedFromMember(nullptr, false) {
1361 if (AdoptTemplateParameterList(Params, DC))
1362 setInvalidDecl();
1363}
1364
1365VarTemplatePartialSpecializationDecl *
1366VarTemplatePartialSpecializationDecl::Create(
1367 ASTContext &Context, DeclContext *DC, SourceLocation StartLoc,
1368 SourceLocation IdLoc, TemplateParameterList *Params,
1369 VarTemplateDecl *SpecializedTemplate, QualType T, TypeSourceInfo *TInfo,
1370 StorageClass S, ArrayRef<TemplateArgument> Args,
1371 const TemplateArgumentListInfo &ArgInfos) {
1372 const ASTTemplateArgumentListInfo *ASTArgInfos
1373 = ASTTemplateArgumentListInfo::Create(Context, ArgInfos);
1374
1375 auto *Result =
1376 new (Context, DC) VarTemplatePartialSpecializationDecl(
1377 Context, DC, StartLoc, IdLoc, Params, SpecializedTemplate, T, TInfo,
1378 S, Args, ASTArgInfos);
1379 Result->setSpecializationKind(TSK_ExplicitSpecialization);
1380 return Result;
1381}
1382
1383VarTemplatePartialSpecializationDecl *
1384VarTemplatePartialSpecializationDecl::CreateDeserialized(ASTContext &C,
1385 unsigned ID) {
1386 return new (C, ID) VarTemplatePartialSpecializationDecl(C);
1387}
1388
1389static TemplateParameterList *
1390createMakeIntegerSeqParameterList(const ASTContext &C, DeclContext *DC) {
1391 // typename T
1392 auto *T = TemplateTypeParmDecl::Create(
1393 C, DC, SourceLocation(), SourceLocation(), /*Depth=*/1, /*Position=*/0,
1394 /*Id=*/nullptr, /*Typename=*/true, /*ParameterPack=*/false,
1395 /*HasTypeConstraint=*/false);
1396 T->setImplicit(true);
1397
1398 // T ...Ints
1399 TypeSourceInfo *TI =
1400 C.getTrivialTypeSourceInfo(QualType(T->getTypeForDecl(), 0));
1401 auto *N = NonTypeTemplateParmDecl::Create(
1402 C, DC, SourceLocation(), SourceLocation(), /*Depth=*/0, /*Position=*/1,
1403 /*Id=*/nullptr, TI->getType(), /*ParameterPack=*/true, TI);
1404 N->setImplicit(true);
1405
1406 // <typename T, T ...Ints>
1407 NamedDecl *P[2] = {T, N};
1408 auto *TPL = TemplateParameterList::Create(
1409 C, SourceLocation(), SourceLocation(), P, SourceLocation(), nullptr);
1410
1411 // template <typename T, ...Ints> class IntSeq
1412 auto *TemplateTemplateParm = TemplateTemplateParmDecl::Create(
1413 C, DC, SourceLocation(), /*Depth=*/0, /*Position=*/0,
1414 /*ParameterPack=*/false, /*Id=*/nullptr, TPL);
1415 TemplateTemplateParm->setImplicit(true);
1416
1417 // typename T
1418 auto *TemplateTypeParm = TemplateTypeParmDecl::Create(
1419 C, DC, SourceLocation(), SourceLocation(), /*Depth=*/0, /*Position=*/1,
1420 /*Id=*/nullptr, /*Typename=*/true, /*ParameterPack=*/false,
1421 /*HasTypeConstraint=*/false);
1422 TemplateTypeParm->setImplicit(true);
1423
1424 // T N
1425 TypeSourceInfo *TInfo = C.getTrivialTypeSourceInfo(
1426 QualType(TemplateTypeParm->getTypeForDecl(), 0));
1427 auto *NonTypeTemplateParm = NonTypeTemplateParmDecl::Create(
1428 C, DC, SourceLocation(), SourceLocation(), /*Depth=*/0, /*Position=*/2,
1429 /*Id=*/nullptr, TInfo->getType(), /*ParameterPack=*/false, TInfo);
1430 NamedDecl *Params[] = {TemplateTemplateParm, TemplateTypeParm,
1431 NonTypeTemplateParm};
1432
1433 // template <template <typename T, T ...Ints> class IntSeq, typename T, T N>
1434 return TemplateParameterList::Create(C, SourceLocation(), SourceLocation(),
1435 Params, SourceLocation(), nullptr);
1436}
1437
1438static TemplateParameterList *
1439createTypePackElementParameterList(const ASTContext &C, DeclContext *DC) {
1440 // std::size_t Index
1441 TypeSourceInfo *TInfo = C.getTrivialTypeSourceInfo(C.getSizeType());
1442 auto *Index = NonTypeTemplateParmDecl::Create(
1443 C, DC, SourceLocation(), SourceLocation(), /*Depth=*/0, /*Position=*/0,
1444 /*Id=*/nullptr, TInfo->getType(), /*ParameterPack=*/false, TInfo);
1445
1446 // typename ...T
1447 auto *Ts = TemplateTypeParmDecl::Create(
1448 C, DC, SourceLocation(), SourceLocation(), /*Depth=*/0, /*Position=*/1,
1449 /*Id=*/nullptr, /*Typename=*/true, /*ParameterPack=*/true,
1450 /*HasTypeConstraint=*/false);
1451 Ts->setImplicit(true);
1452
1453 // template <std::size_t Index, typename ...T>
1454 NamedDecl *Params[] = {Index, Ts};
1455 return TemplateParameterList::Create(C, SourceLocation(), SourceLocation(),
5
←
Calling 'TemplateParameterList::Create'
→
1456 llvm::makeArrayRef(Params),
1457 SourceLocation(), nullptr);
4
←
Passing null pointer value via 6th parameter 'RequiresClause'
→
1458}
1459
1460static TemplateParameterList *createBuiltinTemplateParameterList(
1461 const ASTContext &C, DeclContext *DC, BuiltinTemplateKind BTK) {
1462 switch (BTK) {
2
←
Control jumps to 'case BTK__type_pack_element:' at line 1465
→
1463 case BTK__make_integer_seq:
1464 return createMakeIntegerSeqParameterList(C, DC);
1465 case BTK__type_pack_element:
1466 return createTypePackElementParameterList(C, DC);
3
←
Calling 'createTypePackElementParameterList'
→
1467 }
1468
1469 llvm_unreachable("unhandled BuiltinTemplateKind!")::llvm::llvm_unreachable_internal("unhandled BuiltinTemplateKind!"
, "clang/lib/AST/DeclTemplate.cpp", 1469);
1470}
1471
1472void BuiltinTemplateDecl::anchor() {}
1473
1474BuiltinTemplateDecl::BuiltinTemplateDecl(const ASTContext &C, DeclContext *DC,
1475 DeclarationName Name,
1476 BuiltinTemplateKind BTK)
1477 : TemplateDecl(BuiltinTemplate, DC, SourceLocation(), Name,
1478 createBuiltinTemplateParameterList(C, DC, BTK)),
1
Calling 'createBuiltinTemplateParameterList'
→
1479 BTK(BTK) {}
1480
1481void TypeConstraint::print(llvm::raw_ostream &OS, PrintingPolicy Policy) const {
1482 if (NestedNameSpec)
1483 NestedNameSpec.getNestedNameSpecifier()->print(OS, Policy);
1484 ConceptName.printName(OS, Policy);
1485 if (hasExplicitTemplateArgs()) {
1486 OS << "<";
1487 // FIXME: Find corresponding parameter for argument
1488 for (auto &ArgLoc : ArgsAsWritten->arguments())
1489 ArgLoc.getArgument().print(Policy, OS, /*IncludeType*/ false);
1490 OS << ">";
1491 }
1492}
1493
1494TemplateParamObjectDecl *TemplateParamObjectDecl::Create(const ASTContext &C,
1495 QualType T,
1496 const APValue &V) {
1497 DeclContext *DC = C.getTranslationUnitDecl();
1498 auto *TPOD = new (C, DC) TemplateParamObjectDecl(DC, T, V);
1499 C.addDestruction(&TPOD->Value);
1500 return TPOD;
1501}
1502
1503TemplateParamObjectDecl *
1504TemplateParamObjectDecl::CreateDeserialized(ASTContext &C, unsigned ID) {
1505 auto *TPOD = new (C, ID) TemplateParamObjectDecl(nullptr, QualType(), APValue());
1506 C.addDestruction(&TPOD->Value);
1507 return TPOD;
1508}
1509
1510void TemplateParamObjectDecl::printName(llvm::raw_ostream &OS) const {
1511 OS << "<template param ";
1512 printAsExpr(OS);
1513 OS << ">";
1514}
1515
1516void TemplateParamObjectDecl::printAsExpr(llvm::raw_ostream &OS) const {
1517 printAsExpr(OS, getASTContext().getPrintingPolicy());
1518}
1519
1520void TemplateParamObjectDecl::printAsExpr(llvm::raw_ostream &OS,
1521 const PrintingPolicy &Policy) const {
1522 getType().getUnqualifiedType().print(OS, Policy);
1523 printAsInit(OS, Policy);
1524}
1525
1526void TemplateParamObjectDecl::printAsInit(llvm::raw_ostream &OS) const {
1527 printAsInit(OS, getASTContext().getPrintingPolicy());
1528}
1529
1530void TemplateParamObjectDecl::printAsInit(llvm::raw_ostream &OS,
1531 const PrintingPolicy &Policy) const {
1532 getValue().printPretty(OS, Policy, getType(), &getASTContext());
1533}