/Users/buildslave/jenkins/workspace/coverage/llvm-project/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp
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1 | | //===--- SemaTemplateInstantiateDecl.cpp - C++ Template Decl Instantiation ===/ |
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 | | // This file implements C++ template instantiation for declarations. |
9 | | // |
10 | | //===----------------------------------------------------------------------===/ |
11 | | |
12 | | #include "TreeTransform.h" |
13 | | #include "clang/AST/ASTConsumer.h" |
14 | | #include "clang/AST/ASTContext.h" |
15 | | #include "clang/AST/ASTMutationListener.h" |
16 | | #include "clang/AST/DeclTemplate.h" |
17 | | #include "clang/AST/DeclVisitor.h" |
18 | | #include "clang/AST/DependentDiagnostic.h" |
19 | | #include "clang/AST/Expr.h" |
20 | | #include "clang/AST/ExprCXX.h" |
21 | | #include "clang/AST/PrettyDeclStackTrace.h" |
22 | | #include "clang/AST/TypeLoc.h" |
23 | | #include "clang/Basic/SourceManager.h" |
24 | | #include "clang/Basic/TargetInfo.h" |
25 | | #include "clang/Sema/Initialization.h" |
26 | | #include "clang/Sema/Lookup.h" |
27 | | #include "clang/Sema/ScopeInfo.h" |
28 | | #include "clang/Sema/SemaInternal.h" |
29 | | #include "clang/Sema/Template.h" |
30 | | #include "clang/Sema/TemplateInstCallback.h" |
31 | | #include "llvm/Support/TimeProfiler.h" |
32 | | |
33 | | using namespace clang; |
34 | | |
35 | 3.19k | static bool isDeclWithinFunction(const Decl *D) { |
36 | 3.19k | const DeclContext *DC = D->getDeclContext(); |
37 | 3.19k | if (DC->isFunctionOrMethod()) |
38 | 82 | return true; |
39 | | |
40 | 3.10k | if (DC->isRecord()) |
41 | 3.10k | return cast<CXXRecordDecl>(DC)->isLocalClass(); |
42 | | |
43 | 0 | return false; |
44 | 3.10k | } |
45 | | |
46 | | template<typename DeclT> |
47 | | static bool SubstQualifier(Sema &SemaRef, const DeclT *OldDecl, DeclT *NewDecl, |
48 | 1.55M | const MultiLevelTemplateArgumentList &TemplateArgs) { |
49 | 1.55M | if (!OldDecl->getQualifierLoc()) |
50 | 1.53M | return false; |
51 | | |
52 | 20.8k | assert((NewDecl->getFriendObjectKind() || |
53 | 20.8k | !OldDecl->getLexicalDeclContext()->isDependentContext()) && |
54 | 20.8k | "non-friend with qualified name defined in dependent context"); |
55 | 0 | Sema::ContextRAII SavedContext( |
56 | 20.8k | SemaRef, |
57 | 20.8k | const_cast<DeclContext *>(NewDecl->getFriendObjectKind() |
58 | 20.8k | ? NewDecl->getLexicalDeclContext()10 |
59 | 20.8k | : OldDecl->getLexicalDeclContext()20.8k )); |
60 | | |
61 | 20.8k | NestedNameSpecifierLoc NewQualifierLoc |
62 | 20.8k | = SemaRef.SubstNestedNameSpecifierLoc(OldDecl->getQualifierLoc(), |
63 | 20.8k | TemplateArgs); |
64 | | |
65 | 20.8k | if (!NewQualifierLoc) |
66 | 2 | return true; |
67 | | |
68 | 20.8k | NewDecl->setQualifierInfo(NewQualifierLoc); |
69 | 20.8k | return false; |
70 | 20.8k | } SemaTemplateInstantiateDecl.cpp:bool SubstQualifier<clang::DeclaratorDecl>(clang::Sema&, clang::DeclaratorDecl const*, clang::DeclaratorDecl*, clang::MultiLevelTemplateArgumentList const&) Line | Count | Source | 48 | 383k | const MultiLevelTemplateArgumentList &TemplateArgs) { | 49 | 383k | if (!OldDecl->getQualifierLoc()) | 50 | 372k | return false; | 51 | | | 52 | 11.1k | assert((NewDecl->getFriendObjectKind() || | 53 | 11.1k | !OldDecl->getLexicalDeclContext()->isDependentContext()) && | 54 | 11.1k | "non-friend with qualified name defined in dependent context"); | 55 | 0 | Sema::ContextRAII SavedContext( | 56 | 11.1k | SemaRef, | 57 | 11.1k | const_cast<DeclContext *>(NewDecl->getFriendObjectKind() | 58 | 11.1k | ? NewDecl->getLexicalDeclContext()0 | 59 | 11.1k | : OldDecl->getLexicalDeclContext())); | 60 | | | 61 | 11.1k | NestedNameSpecifierLoc NewQualifierLoc | 62 | 11.1k | = SemaRef.SubstNestedNameSpecifierLoc(OldDecl->getQualifierLoc(), | 63 | 11.1k | TemplateArgs); | 64 | | | 65 | 11.1k | if (!NewQualifierLoc) | 66 | 1 | return true; | 67 | | | 68 | 11.1k | NewDecl->setQualifierInfo(NewQualifierLoc); | 69 | 11.1k | return false; | 70 | 11.1k | } |
SemaTemplateInstantiateDecl.cpp:bool SubstQualifier<clang::TagDecl>(clang::Sema&, clang::TagDecl const*, clang::TagDecl*, clang::MultiLevelTemplateArgumentList const&) Line | Count | Source | 48 | 958k | const MultiLevelTemplateArgumentList &TemplateArgs) { | 49 | 958k | if (!OldDecl->getQualifierLoc()) | 50 | 958k | return false; | 51 | | | 52 | 9 | assert((NewDecl->getFriendObjectKind() || | 53 | 9 | !OldDecl->getLexicalDeclContext()->isDependentContext()) && | 54 | 9 | "non-friend with qualified name defined in dependent context"); | 55 | 0 | Sema::ContextRAII SavedContext( | 56 | 9 | SemaRef, | 57 | 9 | const_cast<DeclContext *>(NewDecl->getFriendObjectKind() | 58 | 9 | ? NewDecl->getLexicalDeclContext()0 | 59 | 9 | : OldDecl->getLexicalDeclContext())); | 60 | | | 61 | 9 | NestedNameSpecifierLoc NewQualifierLoc | 62 | 9 | = SemaRef.SubstNestedNameSpecifierLoc(OldDecl->getQualifierLoc(), | 63 | 9 | TemplateArgs); | 64 | | | 65 | 9 | if (!NewQualifierLoc) | 66 | 0 | return true; | 67 | | | 68 | 9 | NewDecl->setQualifierInfo(NewQualifierLoc); | 69 | 9 | return false; | 70 | 9 | } |
SemaTemplateInstantiateDecl.cpp:bool SubstQualifier<clang::FunctionDecl>(clang::Sema&, clang::FunctionDecl const*, clang::FunctionDecl*, clang::MultiLevelTemplateArgumentList const&) Line | Count | Source | 48 | 209k | const MultiLevelTemplateArgumentList &TemplateArgs) { | 49 | 209k | if (!OldDecl->getQualifierLoc()) | 50 | 200k | return false; | 51 | | | 52 | 9.63k | assert((NewDecl->getFriendObjectKind() || | 53 | 9.63k | !OldDecl->getLexicalDeclContext()->isDependentContext()) && | 54 | 9.63k | "non-friend with qualified name defined in dependent context"); | 55 | 0 | Sema::ContextRAII SavedContext( | 56 | 9.63k | SemaRef, | 57 | 9.63k | const_cast<DeclContext *>(NewDecl->getFriendObjectKind() | 58 | 9.63k | ? NewDecl->getLexicalDeclContext()10 | 59 | 9.63k | : OldDecl->getLexicalDeclContext()9.62k )); | 60 | | | 61 | 9.63k | NestedNameSpecifierLoc NewQualifierLoc | 62 | 9.63k | = SemaRef.SubstNestedNameSpecifierLoc(OldDecl->getQualifierLoc(), | 63 | 9.63k | TemplateArgs); | 64 | | | 65 | 9.63k | if (!NewQualifierLoc) | 66 | 1 | return true; | 67 | | | 68 | 9.63k | NewDecl->setQualifierInfo(NewQualifierLoc); | 69 | 9.63k | return false; | 70 | 9.63k | } |
|
71 | | |
72 | | bool TemplateDeclInstantiator::SubstQualifier(const DeclaratorDecl *OldDecl, |
73 | 383k | DeclaratorDecl *NewDecl) { |
74 | 383k | return ::SubstQualifier(SemaRef, OldDecl, NewDecl, TemplateArgs); |
75 | 383k | } |
76 | | |
77 | | bool TemplateDeclInstantiator::SubstQualifier(const TagDecl *OldDecl, |
78 | 958k | TagDecl *NewDecl) { |
79 | 958k | return ::SubstQualifier(SemaRef, OldDecl, NewDecl, TemplateArgs); |
80 | 958k | } |
81 | | |
82 | | // Include attribute instantiation code. |
83 | | #include "clang/Sema/AttrTemplateInstantiate.inc" |
84 | | |
85 | | static void instantiateDependentAlignedAttr( |
86 | | Sema &S, const MultiLevelTemplateArgumentList &TemplateArgs, |
87 | 173 | const AlignedAttr *Aligned, Decl *New, bool IsPackExpansion) { |
88 | 173 | if (Aligned->isAlignmentExpr()) { |
89 | | // The alignment expression is a constant expression. |
90 | 173 | EnterExpressionEvaluationContext Unevaluated( |
91 | 173 | S, Sema::ExpressionEvaluationContext::ConstantEvaluated); |
92 | 173 | ExprResult Result = S.SubstExpr(Aligned->getAlignmentExpr(), TemplateArgs); |
93 | 173 | if (!Result.isInvalid()) |
94 | 173 | S.AddAlignedAttr(New, *Aligned, Result.getAs<Expr>(), IsPackExpansion); |
95 | 173 | } else { |
96 | 0 | TypeSourceInfo *Result = S.SubstType(Aligned->getAlignmentType(), |
97 | 0 | TemplateArgs, Aligned->getLocation(), |
98 | 0 | DeclarationName()); |
99 | 0 | if (Result) |
100 | 0 | S.AddAlignedAttr(New, *Aligned, Result, IsPackExpansion); |
101 | 0 | } |
102 | 173 | } |
103 | | |
104 | | static void instantiateDependentAlignedAttr( |
105 | | Sema &S, const MultiLevelTemplateArgumentList &TemplateArgs, |
106 | 171 | const AlignedAttr *Aligned, Decl *New) { |
107 | 171 | if (!Aligned->isPackExpansion()) { |
108 | 156 | instantiateDependentAlignedAttr(S, TemplateArgs, Aligned, New, false); |
109 | 156 | return; |
110 | 156 | } |
111 | | |
112 | 15 | SmallVector<UnexpandedParameterPack, 2> Unexpanded; |
113 | 15 | if (Aligned->isAlignmentExpr()) |
114 | 15 | S.collectUnexpandedParameterPacks(Aligned->getAlignmentExpr(), |
115 | 15 | Unexpanded); |
116 | 0 | else |
117 | 0 | S.collectUnexpandedParameterPacks(Aligned->getAlignmentType()->getTypeLoc(), |
118 | 0 | Unexpanded); |
119 | 15 | assert(!Unexpanded.empty() && "Pack expansion without parameter packs?"); |
120 | | |
121 | | // Determine whether we can expand this attribute pack yet. |
122 | 0 | bool Expand = true, RetainExpansion = false; |
123 | 15 | Optional<unsigned> NumExpansions; |
124 | | // FIXME: Use the actual location of the ellipsis. |
125 | 15 | SourceLocation EllipsisLoc = Aligned->getLocation(); |
126 | 15 | if (S.CheckParameterPacksForExpansion(EllipsisLoc, Aligned->getRange(), |
127 | 15 | Unexpanded, TemplateArgs, Expand, |
128 | 15 | RetainExpansion, NumExpansions)) |
129 | 1 | return; |
130 | | |
131 | 14 | if (!Expand) { |
132 | 0 | Sema::ArgumentPackSubstitutionIndexRAII SubstIndex(S, -1); |
133 | 0 | instantiateDependentAlignedAttr(S, TemplateArgs, Aligned, New, true); |
134 | 14 | } else { |
135 | 31 | for (unsigned I = 0; I != *NumExpansions; ++I17 ) { |
136 | 17 | Sema::ArgumentPackSubstitutionIndexRAII SubstIndex(S, I); |
137 | 17 | instantiateDependentAlignedAttr(S, TemplateArgs, Aligned, New, false); |
138 | 17 | } |
139 | 14 | } |
140 | 14 | } |
141 | | |
142 | | static void instantiateDependentAssumeAlignedAttr( |
143 | | Sema &S, const MultiLevelTemplateArgumentList &TemplateArgs, |
144 | 10 | const AssumeAlignedAttr *Aligned, Decl *New) { |
145 | | // The alignment expression is a constant expression. |
146 | 10 | EnterExpressionEvaluationContext Unevaluated( |
147 | 10 | S, Sema::ExpressionEvaluationContext::ConstantEvaluated); |
148 | | |
149 | 10 | Expr *E, *OE = nullptr; |
150 | 10 | ExprResult Result = S.SubstExpr(Aligned->getAlignment(), TemplateArgs); |
151 | 10 | if (Result.isInvalid()) |
152 | 2 | return; |
153 | 8 | E = Result.getAs<Expr>(); |
154 | | |
155 | 8 | if (Aligned->getOffset()) { |
156 | 3 | Result = S.SubstExpr(Aligned->getOffset(), TemplateArgs); |
157 | 3 | if (Result.isInvalid()) |
158 | 0 | return; |
159 | 3 | OE = Result.getAs<Expr>(); |
160 | 3 | } |
161 | | |
162 | 8 | S.AddAssumeAlignedAttr(New, *Aligned, E, OE); |
163 | 8 | } |
164 | | |
165 | | static void instantiateDependentAlignValueAttr( |
166 | | Sema &S, const MultiLevelTemplateArgumentList &TemplateArgs, |
167 | 3 | const AlignValueAttr *Aligned, Decl *New) { |
168 | | // The alignment expression is a constant expression. |
169 | 3 | EnterExpressionEvaluationContext Unevaluated( |
170 | 3 | S, Sema::ExpressionEvaluationContext::ConstantEvaluated); |
171 | 3 | ExprResult Result = S.SubstExpr(Aligned->getAlignment(), TemplateArgs); |
172 | 3 | if (!Result.isInvalid()) |
173 | 3 | S.AddAlignValueAttr(New, *Aligned, Result.getAs<Expr>()); |
174 | 3 | } |
175 | | |
176 | | static void instantiateDependentAllocAlignAttr( |
177 | | Sema &S, const MultiLevelTemplateArgumentList &TemplateArgs, |
178 | 8 | const AllocAlignAttr *Align, Decl *New) { |
179 | 8 | Expr *Param = IntegerLiteral::Create( |
180 | 8 | S.getASTContext(), |
181 | 8 | llvm::APInt(64, Align->getParamIndex().getSourceIndex()), |
182 | 8 | S.getASTContext().UnsignedLongLongTy, Align->getLocation()); |
183 | 8 | S.AddAllocAlignAttr(New, *Align, Param); |
184 | 8 | } |
185 | | |
186 | | static void instantiateDependentAnnotationAttr( |
187 | | Sema &S, const MultiLevelTemplateArgumentList &TemplateArgs, |
188 | 53 | const AnnotateAttr *Attr, Decl *New) { |
189 | 53 | EnterExpressionEvaluationContext Unevaluated( |
190 | 53 | S, Sema::ExpressionEvaluationContext::ConstantEvaluated); |
191 | | |
192 | | // If the attribute has delayed arguments it will have to instantiate those |
193 | | // and handle them as new arguments for the attribute. |
194 | 53 | bool HasDelayedArgs = Attr->delayedArgs_size(); |
195 | | |
196 | 53 | ArrayRef<Expr *> ArgsToInstantiate = |
197 | 53 | HasDelayedArgs |
198 | 53 | ? ArrayRef<Expr *>{Attr->delayedArgs_begin(), Attr->delayedArgs_end()}12 |
199 | 53 | : ArrayRef<Expr *>{Attr->args_begin(), Attr->args_end()}41 ; |
200 | | |
201 | 53 | SmallVector<Expr *, 4> Args; |
202 | 53 | if (S.SubstExprs(ArgsToInstantiate, |
203 | 53 | /*IsCall=*/false, TemplateArgs, Args)) |
204 | 2 | return; |
205 | | |
206 | 51 | StringRef Str = Attr->getAnnotation(); |
207 | 51 | if (HasDelayedArgs) { |
208 | 12 | if (Args.size() < 1) { |
209 | 6 | S.Diag(Attr->getLoc(), diag::err_attribute_too_few_arguments) |
210 | 6 | << Attr << 1; |
211 | 6 | return; |
212 | 6 | } |
213 | | |
214 | 6 | if (!S.checkStringLiteralArgumentAttr(*Attr, Args[0], Str)) |
215 | 6 | return; |
216 | | |
217 | 0 | llvm::SmallVector<Expr *, 4> ActualArgs; |
218 | 0 | ActualArgs.insert(ActualArgs.begin(), Args.begin() + 1, Args.end()); |
219 | 0 | std::swap(Args, ActualArgs); |
220 | 0 | } |
221 | 39 | S.AddAnnotationAttr(New, *Attr, Str, Args); |
222 | 39 | } |
223 | | |
224 | | static Expr *instantiateDependentFunctionAttrCondition( |
225 | | Sema &S, const MultiLevelTemplateArgumentList &TemplateArgs, |
226 | 1.48k | const Attr *A, Expr *OldCond, const Decl *Tmpl, FunctionDecl *New) { |
227 | 1.48k | Expr *Cond = nullptr; |
228 | 1.48k | { |
229 | 1.48k | Sema::ContextRAII SwitchContext(S, New); |
230 | 1.48k | EnterExpressionEvaluationContext Unevaluated( |
231 | 1.48k | S, Sema::ExpressionEvaluationContext::ConstantEvaluated); |
232 | 1.48k | ExprResult Result = S.SubstExpr(OldCond, TemplateArgs); |
233 | 1.48k | if (Result.isInvalid()) |
234 | 0 | return nullptr; |
235 | 1.48k | Cond = Result.getAs<Expr>(); |
236 | 1.48k | } |
237 | 1.48k | if (!Cond->isTypeDependent()) { |
238 | 1.48k | ExprResult Converted = S.PerformContextuallyConvertToBool(Cond); |
239 | 1.48k | if (Converted.isInvalid()) |
240 | 2 | return nullptr; |
241 | 1.48k | Cond = Converted.get(); |
242 | 1.48k | } |
243 | | |
244 | 1.48k | SmallVector<PartialDiagnosticAt, 8> Diags; |
245 | 1.48k | if (OldCond->isValueDependent() && !Cond->isValueDependent()106 && |
246 | 1.48k | !Expr::isPotentialConstantExprUnevaluated(Cond, New, Diags)106 ) { |
247 | 0 | S.Diag(A->getLocation(), diag::err_attr_cond_never_constant_expr) << A; |
248 | 0 | for (const auto &P : Diags) |
249 | 0 | S.Diag(P.first, P.second); |
250 | 0 | return nullptr; |
251 | 0 | } |
252 | 1.48k | return Cond; |
253 | 1.48k | } |
254 | | |
255 | | static void instantiateDependentEnableIfAttr( |
256 | | Sema &S, const MultiLevelTemplateArgumentList &TemplateArgs, |
257 | 35 | const EnableIfAttr *EIA, const Decl *Tmpl, FunctionDecl *New) { |
258 | 35 | Expr *Cond = instantiateDependentFunctionAttrCondition( |
259 | 35 | S, TemplateArgs, EIA, EIA->getCond(), Tmpl, New); |
260 | | |
261 | 35 | if (Cond) |
262 | 33 | New->addAttr(new (S.getASTContext()) EnableIfAttr(S.getASTContext(), *EIA, |
263 | 33 | Cond, EIA->getMessage())); |
264 | 35 | } |
265 | | |
266 | | static void instantiateDependentDiagnoseIfAttr( |
267 | | Sema &S, const MultiLevelTemplateArgumentList &TemplateArgs, |
268 | 1.45k | const DiagnoseIfAttr *DIA, const Decl *Tmpl, FunctionDecl *New) { |
269 | 1.45k | Expr *Cond = instantiateDependentFunctionAttrCondition( |
270 | 1.45k | S, TemplateArgs, DIA, DIA->getCond(), Tmpl, New); |
271 | | |
272 | 1.45k | if (Cond) |
273 | 1.45k | New->addAttr(new (S.getASTContext()) DiagnoseIfAttr( |
274 | 1.45k | S.getASTContext(), *DIA, Cond, DIA->getMessage(), |
275 | 1.45k | DIA->getDiagnosticType(), DIA->getArgDependent(), New)); |
276 | 1.45k | } |
277 | | |
278 | | // Constructs and adds to New a new instance of CUDALaunchBoundsAttr using |
279 | | // template A as the base and arguments from TemplateArgs. |
280 | | static void instantiateDependentCUDALaunchBoundsAttr( |
281 | | Sema &S, const MultiLevelTemplateArgumentList &TemplateArgs, |
282 | 6 | const CUDALaunchBoundsAttr &Attr, Decl *New) { |
283 | | // The alignment expression is a constant expression. |
284 | 6 | EnterExpressionEvaluationContext Unevaluated( |
285 | 6 | S, Sema::ExpressionEvaluationContext::ConstantEvaluated); |
286 | | |
287 | 6 | ExprResult Result = S.SubstExpr(Attr.getMaxThreads(), TemplateArgs); |
288 | 6 | if (Result.isInvalid()) |
289 | 0 | return; |
290 | 6 | Expr *MaxThreads = Result.getAs<Expr>(); |
291 | | |
292 | 6 | Expr *MinBlocks = nullptr; |
293 | 6 | if (Attr.getMinBlocks()) { |
294 | 4 | Result = S.SubstExpr(Attr.getMinBlocks(), TemplateArgs); |
295 | 4 | if (Result.isInvalid()) |
296 | 0 | return; |
297 | 4 | MinBlocks = Result.getAs<Expr>(); |
298 | 4 | } |
299 | | |
300 | 6 | S.AddLaunchBoundsAttr(New, Attr, MaxThreads, MinBlocks); |
301 | 6 | } |
302 | | |
303 | | static void |
304 | | instantiateDependentModeAttr(Sema &S, |
305 | | const MultiLevelTemplateArgumentList &TemplateArgs, |
306 | 84 | const ModeAttr &Attr, Decl *New) { |
307 | 84 | S.AddModeAttr(New, Attr, Attr.getMode(), |
308 | 84 | /*InInstantiation=*/true); |
309 | 84 | } |
310 | | |
311 | | /// Instantiation of 'declare simd' attribute and its arguments. |
312 | | static void instantiateOMPDeclareSimdDeclAttr( |
313 | | Sema &S, const MultiLevelTemplateArgumentList &TemplateArgs, |
314 | 66 | const OMPDeclareSimdDeclAttr &Attr, Decl *New) { |
315 | | // Allow 'this' in clauses with varlists. |
316 | 66 | if (auto *FTD = dyn_cast<FunctionTemplateDecl>(New)) |
317 | 0 | New = FTD->getTemplatedDecl(); |
318 | 66 | auto *FD = cast<FunctionDecl>(New); |
319 | 66 | auto *ThisContext = dyn_cast_or_null<CXXRecordDecl>(FD->getDeclContext()); |
320 | 66 | SmallVector<Expr *, 4> Uniforms, Aligneds, Alignments, Linears, Steps; |
321 | 66 | SmallVector<unsigned, 4> LinModifiers; |
322 | | |
323 | 118 | auto SubstExpr = [&](Expr *E) -> ExprResult { |
324 | 118 | if (auto *DRE = dyn_cast<DeclRefExpr>(E->IgnoreParenImpCasts())) |
325 | 110 | if (auto *PVD = dyn_cast<ParmVarDecl>(DRE->getDecl())) { |
326 | 88 | Sema::ContextRAII SavedContext(S, FD); |
327 | 88 | LocalInstantiationScope Local(S); |
328 | 88 | if (FD->getNumParams() > PVD->getFunctionScopeIndex()) |
329 | 88 | Local.InstantiatedLocal( |
330 | 88 | PVD, FD->getParamDecl(PVD->getFunctionScopeIndex())); |
331 | 88 | return S.SubstExpr(E, TemplateArgs); |
332 | 88 | } |
333 | 30 | Sema::CXXThisScopeRAII ThisScope(S, ThisContext, Qualifiers(), |
334 | 30 | FD->isCXXInstanceMember()); |
335 | 30 | return S.SubstExpr(E, TemplateArgs); |
336 | 118 | }; |
337 | | |
338 | | // Substitute a single OpenMP clause, which is a potentially-evaluated |
339 | | // full-expression. |
340 | 118 | auto Subst = [&](Expr *E) -> ExprResult { |
341 | 118 | EnterExpressionEvaluationContext Evaluated( |
342 | 118 | S, Sema::ExpressionEvaluationContext::PotentiallyEvaluated); |
343 | 118 | ExprResult Res = SubstExpr(E); |
344 | 118 | if (Res.isInvalid()) |
345 | 0 | return Res; |
346 | 118 | return S.ActOnFinishFullExpr(Res.get(), false); |
347 | 118 | }; |
348 | | |
349 | 66 | ExprResult Simdlen; |
350 | 66 | if (auto *E = Attr.getSimdlen()) |
351 | 18 | Simdlen = Subst(E); |
352 | | |
353 | 66 | if (Attr.uniforms_size() > 0) { |
354 | 18 | for(auto *E : Attr.uniforms()) { |
355 | 18 | ExprResult Inst = Subst(E); |
356 | 18 | if (Inst.isInvalid()) |
357 | 0 | continue; |
358 | 18 | Uniforms.push_back(Inst.get()); |
359 | 18 | } |
360 | 10 | } |
361 | | |
362 | 66 | auto AI = Attr.alignments_begin(); |
363 | 66 | for (auto *E : Attr.aligneds()) { |
364 | 58 | ExprResult Inst = Subst(E); |
365 | 58 | if (Inst.isInvalid()) |
366 | 0 | continue; |
367 | 58 | Aligneds.push_back(Inst.get()); |
368 | 58 | Inst = ExprEmpty(); |
369 | 58 | if (*AI) |
370 | 16 | Inst = S.SubstExpr(*AI, TemplateArgs); |
371 | 58 | Alignments.push_back(Inst.get()); |
372 | 58 | ++AI; |
373 | 58 | } |
374 | | |
375 | 66 | auto SI = Attr.steps_begin(); |
376 | 66 | for (auto *E : Attr.linears()) { |
377 | 24 | ExprResult Inst = Subst(E); |
378 | 24 | if (Inst.isInvalid()) |
379 | 0 | continue; |
380 | 24 | Linears.push_back(Inst.get()); |
381 | 24 | Inst = ExprEmpty(); |
382 | 24 | if (*SI) |
383 | 24 | Inst = S.SubstExpr(*SI, TemplateArgs); |
384 | 24 | Steps.push_back(Inst.get()); |
385 | 24 | ++SI; |
386 | 24 | } |
387 | 66 | LinModifiers.append(Attr.modifiers_begin(), Attr.modifiers_end()); |
388 | 66 | (void)S.ActOnOpenMPDeclareSimdDirective( |
389 | 66 | S.ConvertDeclToDeclGroup(New), Attr.getBranchState(), Simdlen.get(), |
390 | 66 | Uniforms, Aligneds, Alignments, Linears, LinModifiers, Steps, |
391 | 66 | Attr.getRange()); |
392 | 66 | } |
393 | | |
394 | | /// Instantiation of 'declare variant' attribute and its arguments. |
395 | | static void instantiateOMPDeclareVariantAttr( |
396 | | Sema &S, const MultiLevelTemplateArgumentList &TemplateArgs, |
397 | 85 | const OMPDeclareVariantAttr &Attr, Decl *New) { |
398 | | // Allow 'this' in clauses with varlists. |
399 | 85 | if (auto *FTD = dyn_cast<FunctionTemplateDecl>(New)) |
400 | 0 | New = FTD->getTemplatedDecl(); |
401 | 85 | auto *FD = cast<FunctionDecl>(New); |
402 | 85 | auto *ThisContext = dyn_cast_or_null<CXXRecordDecl>(FD->getDeclContext()); |
403 | | |
404 | 117 | auto &&SubstExpr = [FD, ThisContext, &S, &TemplateArgs](Expr *E) { |
405 | 117 | if (auto *DRE = dyn_cast<DeclRefExpr>(E->IgnoreParenImpCasts())) |
406 | 81 | if (auto *PVD = dyn_cast<ParmVarDecl>(DRE->getDecl())) { |
407 | 10 | Sema::ContextRAII SavedContext(S, FD); |
408 | 10 | LocalInstantiationScope Local(S); |
409 | 10 | if (FD->getNumParams() > PVD->getFunctionScopeIndex()) |
410 | 10 | Local.InstantiatedLocal( |
411 | 10 | PVD, FD->getParamDecl(PVD->getFunctionScopeIndex())); |
412 | 10 | return S.SubstExpr(E, TemplateArgs); |
413 | 10 | } |
414 | 107 | Sema::CXXThisScopeRAII ThisScope(S, ThisContext, Qualifiers(), |
415 | 107 | FD->isCXXInstanceMember()); |
416 | 107 | return S.SubstExpr(E, TemplateArgs); |
417 | 117 | }; |
418 | | |
419 | | // Substitute a single OpenMP clause, which is a potentially-evaluated |
420 | | // full-expression. |
421 | 117 | auto &&Subst = [&SubstExpr, &S](Expr *E) { |
422 | 117 | EnterExpressionEvaluationContext Evaluated( |
423 | 117 | S, Sema::ExpressionEvaluationContext::PotentiallyEvaluated); |
424 | 117 | ExprResult Res = SubstExpr(E); |
425 | 117 | if (Res.isInvalid()) |
426 | 0 | return Res; |
427 | 117 | return S.ActOnFinishFullExpr(Res.get(), false); |
428 | 117 | }; |
429 | | |
430 | 85 | ExprResult VariantFuncRef; |
431 | 85 | if (Expr *E = Attr.getVariantFuncRef()) { |
432 | | // Do not mark function as is used to prevent its emission if this is the |
433 | | // only place where it is used. |
434 | 85 | EnterExpressionEvaluationContext Unevaluated( |
435 | 85 | S, Sema::ExpressionEvaluationContext::ConstantEvaluated); |
436 | 85 | VariantFuncRef = Subst(E); |
437 | 85 | } |
438 | | |
439 | | // Copy the template version of the OMPTraitInfo and run substitute on all |
440 | | // score and condition expressiosn. |
441 | 85 | OMPTraitInfo &TI = S.getASTContext().getNewOMPTraitInfo(); |
442 | 85 | TI = *Attr.getTraitInfos(); |
443 | | |
444 | | // Try to substitute template parameters in score and condition expressions. |
445 | 138 | auto SubstScoreOrConditionExpr = [&S, Subst](Expr *&E, bool) { |
446 | 138 | if (E) { |
447 | 22 | EnterExpressionEvaluationContext Unevaluated( |
448 | 22 | S, Sema::ExpressionEvaluationContext::ConstantEvaluated); |
449 | 22 | ExprResult ER = Subst(E); |
450 | 22 | if (ER.isUsable()) |
451 | 22 | E = ER.get(); |
452 | 0 | else |
453 | 0 | return true; |
454 | 22 | } |
455 | 138 | return false; |
456 | 138 | }; |
457 | 85 | if (TI.anyScoreOrCondition(SubstScoreOrConditionExpr)) |
458 | 0 | return; |
459 | | |
460 | 85 | Expr *E = VariantFuncRef.get(); |
461 | | |
462 | | // Check function/variant ref for `omp declare variant` but not for `omp |
463 | | // begin declare variant` (which use implicit attributes). |
464 | 85 | Optional<std::pair<FunctionDecl *, Expr *>> DeclVarData = |
465 | 85 | S.checkOpenMPDeclareVariantFunction(S.ConvertDeclToDeclGroup(New), E, TI, |
466 | 85 | Attr.appendArgs_size(), |
467 | 85 | Attr.getRange()); |
468 | | |
469 | 85 | if (!DeclVarData) |
470 | 8 | return; |
471 | | |
472 | 77 | E = DeclVarData.value().second; |
473 | 77 | FD = DeclVarData.value().first; |
474 | | |
475 | 77 | if (auto *VariantDRE = dyn_cast<DeclRefExpr>(E->IgnoreParenImpCasts())) { |
476 | 77 | if (auto *VariantFD = dyn_cast<FunctionDecl>(VariantDRE->getDecl())) { |
477 | 77 | if (auto *VariantFTD = VariantFD->getDescribedFunctionTemplate()) { |
478 | 40 | if (!VariantFTD->isThisDeclarationADefinition()) |
479 | 0 | return; |
480 | 40 | Sema::TentativeAnalysisScope Trap(S); |
481 | 40 | const TemplateArgumentList *TAL = TemplateArgumentList::CreateCopy( |
482 | 40 | S.Context, TemplateArgs.getInnermost()); |
483 | | |
484 | 40 | auto *SubstFD = S.InstantiateFunctionDeclaration(VariantFTD, TAL, |
485 | 40 | New->getLocation()); |
486 | 40 | if (!SubstFD) |
487 | 2 | return; |
488 | 38 | QualType NewType = S.Context.mergeFunctionTypes( |
489 | 38 | SubstFD->getType(), FD->getType(), |
490 | 38 | /* OfBlockPointer */ false, |
491 | 38 | /* Unqualified */ false, /* AllowCXX */ true); |
492 | 38 | if (NewType.isNull()) |
493 | 4 | return; |
494 | 34 | S.InstantiateFunctionDefinition( |
495 | 34 | New->getLocation(), SubstFD, /* Recursive */ true, |
496 | 34 | /* DefinitionRequired */ false, /* AtEndOfTU */ false); |
497 | 34 | SubstFD->setInstantiationIsPending(!SubstFD->isDefined()); |
498 | 34 | E = DeclRefExpr::Create(S.Context, NestedNameSpecifierLoc(), |
499 | 34 | SourceLocation(), SubstFD, |
500 | 34 | /* RefersToEnclosingVariableOrCapture */ false, |
501 | 34 | /* NameLoc */ SubstFD->getLocation(), |
502 | 34 | SubstFD->getType(), ExprValueKind::VK_PRValue); |
503 | 34 | } |
504 | 77 | } |
505 | 77 | } |
506 | | |
507 | 71 | SmallVector<Expr *, 8> NothingExprs; |
508 | 71 | SmallVector<Expr *, 8> NeedDevicePtrExprs; |
509 | 71 | SmallVector<OMPDeclareVariantAttr::InteropType, 8> AppendArgs; |
510 | | |
511 | 71 | for (Expr *E : Attr.adjustArgsNothing()) { |
512 | 5 | ExprResult ER = Subst(E); |
513 | 5 | if (ER.isInvalid()) |
514 | 0 | continue; |
515 | 5 | NothingExprs.push_back(ER.get()); |
516 | 5 | } |
517 | 71 | for (Expr *E : Attr.adjustArgsNeedDevicePtr()) { |
518 | 5 | ExprResult ER = Subst(E); |
519 | 5 | if (ER.isInvalid()) |
520 | 0 | continue; |
521 | 5 | NeedDevicePtrExprs.push_back(ER.get()); |
522 | 5 | } |
523 | 71 | llvm::append_range(AppendArgs, Attr.appendArgs()); |
524 | | |
525 | 71 | S.ActOnOpenMPDeclareVariantDirective( |
526 | 71 | FD, E, TI, NothingExprs, NeedDevicePtrExprs, AppendArgs, SourceLocation(), |
527 | 71 | SourceLocation(), Attr.getRange()); |
528 | 71 | } |
529 | | |
530 | | static void instantiateDependentAMDGPUFlatWorkGroupSizeAttr( |
531 | | Sema &S, const MultiLevelTemplateArgumentList &TemplateArgs, |
532 | 2 | const AMDGPUFlatWorkGroupSizeAttr &Attr, Decl *New) { |
533 | | // Both min and max expression are constant expressions. |
534 | 2 | EnterExpressionEvaluationContext Unevaluated( |
535 | 2 | S, Sema::ExpressionEvaluationContext::ConstantEvaluated); |
536 | | |
537 | 2 | ExprResult Result = S.SubstExpr(Attr.getMin(), TemplateArgs); |
538 | 2 | if (Result.isInvalid()) |
539 | 0 | return; |
540 | 2 | Expr *MinExpr = Result.getAs<Expr>(); |
541 | | |
542 | 2 | Result = S.SubstExpr(Attr.getMax(), TemplateArgs); |
543 | 2 | if (Result.isInvalid()) |
544 | 0 | return; |
545 | 2 | Expr *MaxExpr = Result.getAs<Expr>(); |
546 | | |
547 | 2 | S.addAMDGPUFlatWorkGroupSizeAttr(New, Attr, MinExpr, MaxExpr); |
548 | 2 | } |
549 | | |
550 | | static ExplicitSpecifier |
551 | | instantiateExplicitSpecifier(Sema &S, |
552 | | const MultiLevelTemplateArgumentList &TemplateArgs, |
553 | 1.12M | ExplicitSpecifier ES, FunctionDecl *New) { |
554 | 1.12M | if (!ES.getExpr()) |
555 | 1.12M | return ES; |
556 | 387 | Expr *OldCond = ES.getExpr(); |
557 | 387 | Expr *Cond = nullptr; |
558 | 387 | { |
559 | 387 | EnterExpressionEvaluationContext Unevaluated( |
560 | 387 | S, Sema::ExpressionEvaluationContext::ConstantEvaluated); |
561 | 387 | ExprResult SubstResult = S.SubstExpr(OldCond, TemplateArgs); |
562 | 387 | if (SubstResult.isInvalid()) { |
563 | 142 | return ExplicitSpecifier::Invalid(); |
564 | 142 | } |
565 | 245 | Cond = SubstResult.get(); |
566 | 245 | } |
567 | 0 | ExplicitSpecifier Result(Cond, ES.getKind()); |
568 | 245 | if (!Cond->isTypeDependent()) |
569 | 213 | S.tryResolveExplicitSpecifier(Result); |
570 | 245 | return Result; |
571 | 387 | } |
572 | | |
573 | | static void instantiateDependentAMDGPUWavesPerEUAttr( |
574 | | Sema &S, const MultiLevelTemplateArgumentList &TemplateArgs, |
575 | 3 | const AMDGPUWavesPerEUAttr &Attr, Decl *New) { |
576 | | // Both min and max expression are constant expressions. |
577 | 3 | EnterExpressionEvaluationContext Unevaluated( |
578 | 3 | S, Sema::ExpressionEvaluationContext::ConstantEvaluated); |
579 | | |
580 | 3 | ExprResult Result = S.SubstExpr(Attr.getMin(), TemplateArgs); |
581 | 3 | if (Result.isInvalid()) |
582 | 0 | return; |
583 | 3 | Expr *MinExpr = Result.getAs<Expr>(); |
584 | | |
585 | 3 | Expr *MaxExpr = nullptr; |
586 | 3 | if (auto Max = Attr.getMax()) { |
587 | 2 | Result = S.SubstExpr(Max, TemplateArgs); |
588 | 2 | if (Result.isInvalid()) |
589 | 0 | return; |
590 | 2 | MaxExpr = Result.getAs<Expr>(); |
591 | 2 | } |
592 | | |
593 | 3 | S.addAMDGPUWavesPerEUAttr(New, Attr, MinExpr, MaxExpr); |
594 | 3 | } |
595 | | |
596 | | // This doesn't take any template parameters, but we have a custom action that |
597 | | // needs to happen when the kernel itself is instantiated. We need to run the |
598 | | // ItaniumMangler to mark the names required to name this kernel. |
599 | | static void instantiateDependentSYCLKernelAttr( |
600 | | Sema &S, const MultiLevelTemplateArgumentList &TemplateArgs, |
601 | 64 | const SYCLKernelAttr &Attr, Decl *New) { |
602 | 64 | New->addAttr(Attr.clone(S.getASTContext())); |
603 | 64 | } |
604 | | |
605 | | /// Determine whether the attribute A might be relevant to the declaration D. |
606 | | /// If not, we can skip instantiating it. The attribute may or may not have |
607 | | /// been instantiated yet. |
608 | 5.69M | static bool isRelevantAttr(Sema &S, const Decl *D, const Attr *A) { |
609 | | // 'preferred_name' is only relevant to the matching specialization of the |
610 | | // template. |
611 | 5.69M | if (const auto *PNA = dyn_cast<PreferredNameAttr>(A)) { |
612 | 33.4k | QualType T = PNA->getTypedefType(); |
613 | 33.4k | const auto *RD = cast<CXXRecordDecl>(D); |
614 | 33.4k | if (!T->isDependentType() && !RD->isDependentContext()33.4k && |
615 | 33.4k | !declaresSameEntity(T->getAsCXXRecordDecl(), RD)33.4k ) |
616 | 21.0k | return false; |
617 | 12.4k | for (const auto *ExistingPNA : D->specific_attrs<PreferredNameAttr>()) |
618 | 7.65k | if (S.Context.hasSameType(ExistingPNA->getTypedefType(), |
619 | 7.65k | PNA->getTypedefType())) |
620 | 7.64k | return false; |
621 | 4.79k | return true; |
622 | 12.4k | } |
623 | | |
624 | 5.66M | if (const auto *BA = dyn_cast<BuiltinAttr>(A)) { |
625 | 35.5k | const FunctionDecl *FD = dyn_cast<FunctionDecl>(D); |
626 | 35.5k | switch (BA->getID()) { |
627 | 17.0k | case Builtin::BIforward: |
628 | | // Do not treat 'std::forward' as a builtin if it takes an rvalue reference |
629 | | // type and returns an lvalue reference type. The library implementation |
630 | | // will produce an error in this case; don't get in its way. |
631 | 17.0k | if (FD && FD->getNumParams() >= 1 && |
632 | 17.0k | FD->getParamDecl(0)->getType()->isRValueReferenceType() && |
633 | 17.0k | FD->getReturnType()->isLValueReferenceType()208 ) { |
634 | 202 | return false; |
635 | 202 | } |
636 | 17.0k | LLVM_FALLTHROUGH16.8k ;16.8k |
637 | 29.6k | case Builtin::BImove: |
638 | 29.8k | case Builtin::BImove_if_noexcept: |
639 | | // HACK: Super-old versions of libc++ (3.1 and earlier) provide |
640 | | // std::forward and std::move overloads that sometimes return by value |
641 | | // instead of by reference when building in C++98 mode. Don't treat such |
642 | | // cases as builtins. |
643 | 29.8k | if (FD && !FD->getReturnType()->isReferenceType()) |
644 | 2 | return false; |
645 | 29.8k | break; |
646 | 35.5k | } |
647 | 35.5k | } |
648 | | |
649 | 5.66M | return true; |
650 | 5.66M | } |
651 | | |
652 | | void Sema::InstantiateAttrsForDecl( |
653 | | const MultiLevelTemplateArgumentList &TemplateArgs, const Decl *Tmpl, |
654 | | Decl *New, LateInstantiatedAttrVec *LateAttrs, |
655 | 1.60M | LocalInstantiationScope *OuterMostScope) { |
656 | 1.60M | if (NamedDecl *ND = dyn_cast<NamedDecl>(New)) { |
657 | | // FIXME: This function is called multiple times for the same template |
658 | | // specialization. We should only instantiate attributes that were added |
659 | | // since the previous instantiation. |
660 | 1.60M | for (const auto *TmplAttr : Tmpl->attrs()) { |
661 | 696k | if (!isRelevantAttr(*this, New, TmplAttr)) |
662 | 21.5k | continue; |
663 | | |
664 | | // FIXME: If any of the special case versions from InstantiateAttrs become |
665 | | // applicable to template declaration, we'll need to add them here. |
666 | 674k | CXXThisScopeRAII ThisScope( |
667 | 674k | *this, dyn_cast_or_null<CXXRecordDecl>(ND->getDeclContext()), |
668 | 674k | Qualifiers(), ND->isCXXInstanceMember()); |
669 | | |
670 | 674k | Attr *NewAttr = sema::instantiateTemplateAttributeForDecl( |
671 | 674k | TmplAttr, Context, *this, TemplateArgs); |
672 | 674k | if (NewAttr && isRelevantAttr(*this, New, NewAttr)11.9k ) |
673 | 11.9k | New->addAttr(NewAttr); |
674 | 674k | } |
675 | 1.60M | } |
676 | 1.60M | } |
677 | | |
678 | | static Sema::RetainOwnershipKind |
679 | 89 | attrToRetainOwnershipKind(const Attr *A) { |
680 | 89 | switch (A->getKind()) { |
681 | 0 | case clang::attr::CFConsumed: |
682 | 0 | return Sema::RetainOwnershipKind::CF; |
683 | 0 | case clang::attr::OSConsumed: |
684 | 0 | return Sema::RetainOwnershipKind::OS; |
685 | 89 | case clang::attr::NSConsumed: |
686 | 89 | return Sema::RetainOwnershipKind::NS; |
687 | 0 | default: |
688 | 0 | llvm_unreachable("Wrong argument supplied"); |
689 | 89 | } |
690 | 89 | } |
691 | | |
692 | | void Sema::InstantiateAttrs(const MultiLevelTemplateArgumentList &TemplateArgs, |
693 | | const Decl *Tmpl, Decl *New, |
694 | | LateInstantiatedAttrVec *LateAttrs, |
695 | 5.22M | LocalInstantiationScope *OuterMostScope) { |
696 | 5.22M | for (const auto *TmplAttr : Tmpl->attrs()) { |
697 | 3.18M | if (!isRelevantAttr(*this, New, TmplAttr)) |
698 | 7.35k | continue; |
699 | | |
700 | | // FIXME: This should be generalized to more than just the AlignedAttr. |
701 | 3.17M | const AlignedAttr *Aligned = dyn_cast<AlignedAttr>(TmplAttr); |
702 | 3.17M | if (Aligned && Aligned->isAlignmentDependent()1.19k ) { |
703 | 171 | instantiateDependentAlignedAttr(*this, TemplateArgs, Aligned, New); |
704 | 171 | continue; |
705 | 171 | } |
706 | | |
707 | 3.17M | if (const auto *AssumeAligned = dyn_cast<AssumeAlignedAttr>(TmplAttr)) { |
708 | 10 | instantiateDependentAssumeAlignedAttr(*this, TemplateArgs, AssumeAligned, New); |
709 | 10 | continue; |
710 | 10 | } |
711 | | |
712 | 3.17M | if (const auto *AlignValue = dyn_cast<AlignValueAttr>(TmplAttr)) { |
713 | 3 | instantiateDependentAlignValueAttr(*this, TemplateArgs, AlignValue, New); |
714 | 3 | continue; |
715 | 3 | } |
716 | | |
717 | 3.17M | if (const auto *AllocAlign = dyn_cast<AllocAlignAttr>(TmplAttr)) { |
718 | 8 | instantiateDependentAllocAlignAttr(*this, TemplateArgs, AllocAlign, New); |
719 | 8 | continue; |
720 | 8 | } |
721 | | |
722 | 3.17M | if (const auto *Annotate = dyn_cast<AnnotateAttr>(TmplAttr)) { |
723 | 53 | instantiateDependentAnnotationAttr(*this, TemplateArgs, Annotate, New); |
724 | 53 | continue; |
725 | 53 | } |
726 | | |
727 | 3.17M | if (const auto *EnableIf = dyn_cast<EnableIfAttr>(TmplAttr)) { |
728 | 35 | instantiateDependentEnableIfAttr(*this, TemplateArgs, EnableIf, Tmpl, |
729 | 35 | cast<FunctionDecl>(New)); |
730 | 35 | continue; |
731 | 35 | } |
732 | | |
733 | 3.17M | if (const auto *DiagnoseIf = dyn_cast<DiagnoseIfAttr>(TmplAttr)) { |
734 | 1.45k | instantiateDependentDiagnoseIfAttr(*this, TemplateArgs, DiagnoseIf, Tmpl, |
735 | 1.45k | cast<FunctionDecl>(New)); |
736 | 1.45k | continue; |
737 | 1.45k | } |
738 | | |
739 | 3.17M | if (const auto *CUDALaunchBounds = |
740 | 3.17M | dyn_cast<CUDALaunchBoundsAttr>(TmplAttr)) { |
741 | 6 | instantiateDependentCUDALaunchBoundsAttr(*this, TemplateArgs, |
742 | 6 | *CUDALaunchBounds, New); |
743 | 6 | continue; |
744 | 6 | } |
745 | | |
746 | 3.17M | if (const auto *Mode = dyn_cast<ModeAttr>(TmplAttr)) { |
747 | 84 | instantiateDependentModeAttr(*this, TemplateArgs, *Mode, New); |
748 | 84 | continue; |
749 | 84 | } |
750 | | |
751 | 3.17M | if (const auto *OMPAttr = dyn_cast<OMPDeclareSimdDeclAttr>(TmplAttr)) { |
752 | 66 | instantiateOMPDeclareSimdDeclAttr(*this, TemplateArgs, *OMPAttr, New); |
753 | 66 | continue; |
754 | 66 | } |
755 | | |
756 | 3.17M | if (const auto *OMPAttr = dyn_cast<OMPDeclareVariantAttr>(TmplAttr)) { |
757 | 85 | instantiateOMPDeclareVariantAttr(*this, TemplateArgs, *OMPAttr, New); |
758 | 85 | continue; |
759 | 85 | } |
760 | | |
761 | 3.17M | if (const auto *AMDGPUFlatWorkGroupSize = |
762 | 3.17M | dyn_cast<AMDGPUFlatWorkGroupSizeAttr>(TmplAttr)) { |
763 | 2 | instantiateDependentAMDGPUFlatWorkGroupSizeAttr( |
764 | 2 | *this, TemplateArgs, *AMDGPUFlatWorkGroupSize, New); |
765 | 2 | } |
766 | | |
767 | 3.17M | if (const auto *AMDGPUFlatWorkGroupSize = |
768 | 3.17M | dyn_cast<AMDGPUWavesPerEUAttr>(TmplAttr)) { |
769 | 3 | instantiateDependentAMDGPUWavesPerEUAttr(*this, TemplateArgs, |
770 | 3 | *AMDGPUFlatWorkGroupSize, New); |
771 | 3 | } |
772 | | |
773 | | // Existing DLL attribute on the instantiation takes precedence. |
774 | 3.17M | if (TmplAttr->getKind() == attr::DLLExport || |
775 | 3.17M | TmplAttr->getKind() == attr::DLLImport3.17M ) { |
776 | 1.44k | if (New->hasAttr<DLLExportAttr>() || New->hasAttr<DLLImportAttr>()1.43k ) { |
777 | 24 | continue; |
778 | 24 | } |
779 | 1.44k | } |
780 | | |
781 | 3.17M | if (const auto *ABIAttr = dyn_cast<ParameterABIAttr>(TmplAttr)) { |
782 | 6 | AddParameterABIAttr(New, *ABIAttr, ABIAttr->getABI()); |
783 | 6 | continue; |
784 | 6 | } |
785 | | |
786 | 3.17M | if (isa<NSConsumedAttr>(TmplAttr) || isa<OSConsumedAttr>(TmplAttr)3.17M || |
787 | 3.17M | isa<CFConsumedAttr>(TmplAttr)3.17M ) { |
788 | 89 | AddXConsumedAttr(New, *TmplAttr, attrToRetainOwnershipKind(TmplAttr), |
789 | 89 | /*template instantiation=*/true); |
790 | 89 | continue; |
791 | 89 | } |
792 | | |
793 | 3.17M | if (auto *A = dyn_cast<PointerAttr>(TmplAttr)) { |
794 | 1.47k | if (!New->hasAttr<PointerAttr>()) |
795 | 1.47k | New->addAttr(A->clone(Context)); |
796 | 1.47k | continue; |
797 | 1.47k | } |
798 | | |
799 | 3.17M | if (auto *A = dyn_cast<OwnerAttr>(TmplAttr)) { |
800 | 4.12k | if (!New->hasAttr<OwnerAttr>()) |
801 | 4.10k | New->addAttr(A->clone(Context)); |
802 | 4.12k | continue; |
803 | 4.12k | } |
804 | | |
805 | 3.16M | if (auto *A = dyn_cast<SYCLKernelAttr>(TmplAttr)) { |
806 | 64 | instantiateDependentSYCLKernelAttr(*this, TemplateArgs, *A, New); |
807 | 64 | continue; |
808 | 64 | } |
809 | | |
810 | 3.16M | assert(!TmplAttr->isPackExpansion()); |
811 | 3.16M | if (TmplAttr->isLateParsed() && LateAttrs130 ) { |
812 | | // Late parsed attributes must be instantiated and attached after the |
813 | | // enclosing class has been instantiated. See Sema::InstantiateClass. |
814 | 82 | LocalInstantiationScope *Saved = nullptr; |
815 | 82 | if (CurrentInstantiationScope) |
816 | 82 | Saved = CurrentInstantiationScope->cloneScopes(OuterMostScope); |
817 | 82 | LateAttrs->push_back(LateInstantiatedAttribute(TmplAttr, Saved, New)); |
818 | 3.16M | } else { |
819 | | // Allow 'this' within late-parsed attributes. |
820 | 3.16M | auto *ND = cast<NamedDecl>(New); |
821 | 3.16M | auto *ThisContext = dyn_cast_or_null<CXXRecordDecl>(ND->getDeclContext()); |
822 | 3.16M | CXXThisScopeRAII ThisScope(*this, ThisContext, Qualifiers(), |
823 | 3.16M | ND->isCXXInstanceMember()); |
824 | | |
825 | 3.16M | Attr *NewAttr = sema::instantiateTemplateAttribute(TmplAttr, Context, |
826 | 3.16M | *this, TemplateArgs); |
827 | 3.16M | if (NewAttr && isRelevantAttr(*this, New, TmplAttr)1.80M ) |
828 | 1.80M | New->addAttr(NewAttr); |
829 | 3.16M | } |
830 | 3.16M | } |
831 | 5.22M | } |
832 | | |
833 | | /// In the MS ABI, we need to instantiate default arguments of dllexported |
834 | | /// default constructors along with the constructor definition. This allows IR |
835 | | /// gen to emit a constructor closure which calls the default constructor with |
836 | | /// its default arguments. |
837 | 224 | void Sema::InstantiateDefaultCtorDefaultArgs(CXXConstructorDecl *Ctor) { |
838 | 224 | assert(Context.getTargetInfo().getCXXABI().isMicrosoft() && |
839 | 224 | Ctor->isDefaultConstructor()); |
840 | 0 | unsigned NumParams = Ctor->getNumParams(); |
841 | 224 | if (NumParams == 0) |
842 | 184 | return; |
843 | 40 | DLLExportAttr *Attr = Ctor->getAttr<DLLExportAttr>(); |
844 | 40 | if (!Attr) |
845 | 0 | return; |
846 | 80 | for (unsigned I = 0; 40 I != NumParams; ++I40 ) { |
847 | 40 | (void)CheckCXXDefaultArgExpr(Attr->getLocation(), Ctor, |
848 | 40 | Ctor->getParamDecl(I)); |
849 | 40 | CleanupVarDeclMarking(); |
850 | 40 | } |
851 | 40 | } |
852 | | |
853 | | /// Get the previous declaration of a declaration for the purposes of template |
854 | | /// instantiation. If this finds a previous declaration, then the previous |
855 | | /// declaration of the instantiation of D should be an instantiation of the |
856 | | /// result of this function. |
857 | | template<typename DeclT> |
858 | 1.75M | static DeclT *getPreviousDeclForInstantiation(DeclT *D) { |
859 | 1.75M | DeclT *Result = D->getPreviousDecl(); |
860 | | |
861 | | // If the declaration is within a class, and the previous declaration was |
862 | | // merged from a different definition of that class, then we don't have a |
863 | | // previous declaration for the purpose of template instantiation. |
864 | 1.75M | if (Result && isa<CXXRecordDecl>(D->getDeclContext())530 && |
865 | 1.75M | D->getLexicalDeclContext() != Result->getLexicalDeclContext()25 ) |
866 | 5 | return nullptr; |
867 | | |
868 | 1.75M | return Result; |
869 | 1.75M | } SemaTemplateInstantiateDecl.cpp:clang::TypedefNameDecl* getPreviousDeclForInstantiation<clang::TypedefNameDecl>(clang::TypedefNameDecl*) Line | Count | Source | 858 | 786k | static DeclT *getPreviousDeclForInstantiation(DeclT *D) { | 859 | 786k | DeclT *Result = D->getPreviousDecl(); | 860 | | | 861 | | // If the declaration is within a class, and the previous declaration was | 862 | | // merged from a different definition of that class, then we don't have a | 863 | | // previous declaration for the purpose of template instantiation. | 864 | 786k | if (Result && isa<CXXRecordDecl>(D->getDeclContext())471 && | 865 | 786k | D->getLexicalDeclContext() != Result->getLexicalDeclContext()0 ) | 866 | 0 | return nullptr; | 867 | | | 868 | 786k | return Result; | 869 | 786k | } |
SemaTemplateInstantiateDecl.cpp:clang::EnumDecl* getPreviousDeclForInstantiation<clang::EnumDecl>(clang::EnumDecl*) Line | Count | Source | 858 | 3.11k | static DeclT *getPreviousDeclForInstantiation(DeclT *D) { | 859 | 3.11k | DeclT *Result = D->getPreviousDecl(); | 860 | | | 861 | | // If the declaration is within a class, and the previous declaration was | 862 | | // merged from a different definition of that class, then we don't have a | 863 | | // previous declaration for the purpose of template instantiation. | 864 | 3.11k | if (Result && isa<CXXRecordDecl>(D->getDeclContext())22 && | 865 | 3.11k | D->getLexicalDeclContext() != Result->getLexicalDeclContext()0 ) | 866 | 0 | return nullptr; | 867 | | | 868 | 3.11k | return Result; | 869 | 3.11k | } |
SemaTemplateInstantiateDecl.cpp:clang::CXXRecordDecl* getPreviousDeclForInstantiation<clang::CXXRecordDecl>(clang::CXXRecordDecl*) Line | Count | Source | 858 | 961k | static DeclT *getPreviousDeclForInstantiation(DeclT *D) { | 859 | 961k | DeclT *Result = D->getPreviousDecl(); | 860 | | | 861 | | // If the declaration is within a class, and the previous declaration was | 862 | | // merged from a different definition of that class, then we don't have a | 863 | | // previous declaration for the purpose of template instantiation. | 864 | 961k | if (Result && isa<CXXRecordDecl>(D->getDeclContext())37 && | 865 | 961k | D->getLexicalDeclContext() != Result->getLexicalDeclContext()25 ) | 866 | 5 | return nullptr; | 867 | | | 868 | 961k | return Result; | 869 | 961k | } |
SemaTemplateInstantiateDecl.cpp:clang::VarDecl* getPreviousDeclForInstantiation<clang::VarDecl>(clang::VarDecl*) Line | Count | Source | 858 | 376 | static DeclT *getPreviousDeclForInstantiation(DeclT *D) { | 859 | 376 | DeclT *Result = D->getPreviousDecl(); | 860 | | | 861 | | // If the declaration is within a class, and the previous declaration was | 862 | | // merged from a different definition of that class, then we don't have a | 863 | | // previous declaration for the purpose of template instantiation. | 864 | 376 | if (Result && isa<CXXRecordDecl>(D->getDeclContext())0 && | 865 | 376 | D->getLexicalDeclContext() != Result->getLexicalDeclContext()0 ) | 866 | 0 | return nullptr; | 867 | | | 868 | 376 | return Result; | 869 | 376 | } |
SemaTemplateInstantiateDecl.cpp:clang::FunctionTemplateDecl* getPreviousDeclForInstantiation<clang::FunctionTemplateDecl>(clang::FunctionTemplateDecl*) Line | Count | Source | 858 | 14 | static DeclT *getPreviousDeclForInstantiation(DeclT *D) { | 859 | 14 | DeclT *Result = D->getPreviousDecl(); | 860 | | | 861 | | // If the declaration is within a class, and the previous declaration was | 862 | | // merged from a different definition of that class, then we don't have a | 863 | | // previous declaration for the purpose of template instantiation. | 864 | 14 | if (Result && isa<CXXRecordDecl>(D->getDeclContext())0 && | 865 | 14 | D->getLexicalDeclContext() != Result->getLexicalDeclContext()0 ) | 866 | 0 | return nullptr; | 867 | | | 868 | 14 | return Result; | 869 | 14 | } |
SemaTemplateInstantiateDecl.cpp:clang::UsingShadowDecl* getPreviousDeclForInstantiation<clang::UsingShadowDecl>(clang::UsingShadowDecl*) Line | Count | Source | 858 | 391 | static DeclT *getPreviousDeclForInstantiation(DeclT *D) { | 859 | 391 | DeclT *Result = D->getPreviousDecl(); | 860 | | | 861 | | // If the declaration is within a class, and the previous declaration was | 862 | | // merged from a different definition of that class, then we don't have a | 863 | | // previous declaration for the purpose of template instantiation. | 864 | 391 | if (Result && isa<CXXRecordDecl>(D->getDeclContext())0 && | 865 | 391 | D->getLexicalDeclContext() != Result->getLexicalDeclContext()0 ) | 866 | 0 | return nullptr; | 867 | | | 868 | 391 | return Result; | 869 | 391 | } |
|
870 | | |
871 | | Decl * |
872 | 0 | TemplateDeclInstantiator::VisitTranslationUnitDecl(TranslationUnitDecl *D) { |
873 | 0 | llvm_unreachable("Translation units cannot be instantiated"); |
874 | 0 | } |
875 | | |
876 | | Decl * |
877 | 0 | TemplateDeclInstantiator::VisitPragmaCommentDecl(PragmaCommentDecl *D) { |
878 | 0 | llvm_unreachable("pragma comment cannot be instantiated"); |
879 | 0 | } |
880 | | |
881 | | Decl *TemplateDeclInstantiator::VisitPragmaDetectMismatchDecl( |
882 | 0 | PragmaDetectMismatchDecl *D) { |
883 | 0 | llvm_unreachable("pragma comment cannot be instantiated"); |
884 | 0 | } |
885 | | |
886 | | Decl * |
887 | 0 | TemplateDeclInstantiator::VisitExternCContextDecl(ExternCContextDecl *D) { |
888 | 0 | llvm_unreachable("extern \"C\" context cannot be instantiated"); |
889 | 0 | } |
890 | | |
891 | 0 | Decl *TemplateDeclInstantiator::VisitMSGuidDecl(MSGuidDecl *D) { |
892 | 0 | llvm_unreachable("GUID declaration cannot be instantiated"); |
893 | 0 | } |
894 | | |
895 | | Decl *TemplateDeclInstantiator::VisitUnnamedGlobalConstantDecl( |
896 | 0 | UnnamedGlobalConstantDecl *D) { |
897 | 0 | llvm_unreachable("UnnamedGlobalConstantDecl cannot be instantiated"); |
898 | 0 | } |
899 | | |
900 | | Decl *TemplateDeclInstantiator::VisitTemplateParamObjectDecl( |
901 | 0 | TemplateParamObjectDecl *D) { |
902 | 0 | llvm_unreachable("template parameter objects cannot be instantiated"); |
903 | 0 | } |
904 | | |
905 | | Decl * |
906 | 88 | TemplateDeclInstantiator::VisitLabelDecl(LabelDecl *D) { |
907 | 88 | LabelDecl *Inst = LabelDecl::Create(SemaRef.Context, Owner, D->getLocation(), |
908 | 88 | D->getIdentifier()); |
909 | 88 | Owner->addDecl(Inst); |
910 | 88 | return Inst; |
911 | 88 | } |
912 | | |
913 | | Decl * |
914 | 0 | TemplateDeclInstantiator::VisitNamespaceDecl(NamespaceDecl *D) { |
915 | 0 | llvm_unreachable("Namespaces cannot be instantiated"); |
916 | 0 | } |
917 | | |
918 | | Decl * |
919 | 2 | TemplateDeclInstantiator::VisitNamespaceAliasDecl(NamespaceAliasDecl *D) { |
920 | 2 | NamespaceAliasDecl *Inst |
921 | 2 | = NamespaceAliasDecl::Create(SemaRef.Context, Owner, |
922 | 2 | D->getNamespaceLoc(), |
923 | 2 | D->getAliasLoc(), |
924 | 2 | D->getIdentifier(), |
925 | 2 | D->getQualifierLoc(), |
926 | 2 | D->getTargetNameLoc(), |
927 | 2 | D->getNamespace()); |
928 | 2 | Owner->addDecl(Inst); |
929 | 2 | return Inst; |
930 | 2 | } |
931 | | |
932 | | Decl *TemplateDeclInstantiator::InstantiateTypedefNameDecl(TypedefNameDecl *D, |
933 | 755k | bool IsTypeAlias) { |
934 | 755k | bool Invalid = false; |
935 | 755k | TypeSourceInfo *DI = D->getTypeSourceInfo(); |
936 | 755k | if (DI->getType()->isInstantiationDependentType() || |
937 | 755k | DI->getType()->isVariablyModifiedType()35.9k ) { |
938 | 719k | DI = SemaRef.SubstType(DI, TemplateArgs, |
939 | 719k | D->getLocation(), D->getDeclName()); |
940 | 719k | if (!DI) { |
941 | 218 | Invalid = true; |
942 | 218 | DI = SemaRef.Context.getTrivialTypeSourceInfo(SemaRef.Context.IntTy); |
943 | 218 | } |
944 | 719k | } else { |
945 | 35.9k | SemaRef.MarkDeclarationsReferencedInType(D->getLocation(), DI->getType()); |
946 | 35.9k | } |
947 | | |
948 | | // HACK: 2012-10-23 g++ has a bug where it gets the value kind of ?: wrong. |
949 | | // libstdc++ relies upon this bug in its implementation of common_type. If we |
950 | | // happen to be processing that implementation, fake up the g++ ?: |
951 | | // semantics. See LWG issue 2141 for more information on the bug. The bugs |
952 | | // are fixed in g++ and libstdc++ 4.9.0 (2014-04-22). |
953 | 755k | const DecltypeType *DT = DI->getType()->getAs<DecltypeType>(); |
954 | 755k | CXXRecordDecl *RD = dyn_cast<CXXRecordDecl>(D->getDeclContext()); |
955 | 755k | if (DT && RD6.80k && isa<ConditionalOperator>(DT->getUnderlyingExpr())4.93k && |
956 | 755k | DT->isReferenceType()1 && |
957 | 755k | RD->getEnclosingNamespaceContext() == SemaRef.getStdNamespace()1 && |
958 | 755k | RD->getIdentifier()1 && RD->getIdentifier()->isStr("common_type")1 && |
959 | 755k | D->getIdentifier()1 && D->getIdentifier()->isStr("type")1 && |
960 | 755k | SemaRef.getSourceManager().isInSystemHeader(D->getBeginLoc())1 ) |
961 | | // Fold it to the (non-reference) type which g++ would have produced. |
962 | 1 | DI = SemaRef.Context.getTrivialTypeSourceInfo( |
963 | 1 | DI->getType().getNonReferenceType()); |
964 | | |
965 | | // Create the new typedef |
966 | 755k | TypedefNameDecl *Typedef; |
967 | 755k | if (IsTypeAlias) |
968 | 133k | Typedef = TypeAliasDecl::Create(SemaRef.Context, Owner, D->getBeginLoc(), |
969 | 133k | D->getLocation(), D->getIdentifier(), DI); |
970 | 622k | else |
971 | 622k | Typedef = TypedefDecl::Create(SemaRef.Context, Owner, D->getBeginLoc(), |
972 | 622k | D->getLocation(), D->getIdentifier(), DI); |
973 | 755k | if (Invalid) |
974 | 218 | Typedef->setInvalidDecl(); |
975 | | |
976 | | // If the old typedef was the name for linkage purposes of an anonymous |
977 | | // tag decl, re-establish that relationship for the new typedef. |
978 | 755k | if (const TagType *oldTagType = D->getUnderlyingType()->getAs<TagType>()) { |
979 | 9.84k | TagDecl *oldTag = oldTagType->getDecl(); |
980 | 9.84k | if (oldTag->getTypedefNameForAnonDecl() == D && !Invalid20 ) { |
981 | 20 | TagDecl *newTag = DI->getType()->castAs<TagType>()->getDecl(); |
982 | 20 | assert(!newTag->hasNameForLinkage()); |
983 | 0 | newTag->setTypedefNameForAnonDecl(Typedef); |
984 | 20 | } |
985 | 9.84k | } |
986 | | |
987 | 755k | if (TypedefNameDecl *Prev = getPreviousDeclForInstantiation(D)) { |
988 | 471 | NamedDecl *InstPrev = SemaRef.FindInstantiatedDecl(D->getLocation(), Prev, |
989 | 471 | TemplateArgs); |
990 | 471 | if (!InstPrev) |
991 | 0 | return nullptr; |
992 | | |
993 | 471 | TypedefNameDecl *InstPrevTypedef = cast<TypedefNameDecl>(InstPrev); |
994 | | |
995 | | // If the typedef types are not identical, reject them. |
996 | 471 | SemaRef.isIncompatibleTypedef(InstPrevTypedef, Typedef); |
997 | | |
998 | 471 | Typedef->setPreviousDecl(InstPrevTypedef); |
999 | 471 | } |
1000 | | |
1001 | 755k | SemaRef.InstantiateAttrs(TemplateArgs, D, Typedef); |
1002 | | |
1003 | 755k | if (D->getUnderlyingType()->getAs<DependentNameType>()) |
1004 | 273k | SemaRef.inferGslPointerAttribute(Typedef); |
1005 | | |
1006 | 755k | Typedef->setAccess(D->getAccess()); |
1007 | 755k | Typedef->setReferenced(D->isReferenced()); |
1008 | | |
1009 | 755k | return Typedef; |
1010 | 755k | } |
1011 | | |
1012 | 622k | Decl *TemplateDeclInstantiator::VisitTypedefDecl(TypedefDecl *D) { |
1013 | 622k | Decl *Typedef = InstantiateTypedefNameDecl(D, /*IsTypeAlias=*/false); |
1014 | 622k | if (Typedef) |
1015 | 622k | Owner->addDecl(Typedef); |
1016 | 622k | return Typedef; |
1017 | 622k | } |
1018 | | |
1019 | 102k | Decl *TemplateDeclInstantiator::VisitTypeAliasDecl(TypeAliasDecl *D) { |
1020 | 102k | Decl *Typedef = InstantiateTypedefNameDecl(D, /*IsTypeAlias=*/true); |
1021 | 102k | if (Typedef) |
1022 | 102k | Owner->addDecl(Typedef); |
1023 | 102k | return Typedef; |
1024 | 102k | } |
1025 | | |
1026 | | Decl * |
1027 | 30.4k | TemplateDeclInstantiator::VisitTypeAliasTemplateDecl(TypeAliasTemplateDecl *D) { |
1028 | | // Create a local instantiation scope for this type alias template, which |
1029 | | // will contain the instantiations of the template parameters. |
1030 | 30.4k | LocalInstantiationScope Scope(SemaRef); |
1031 | | |
1032 | 30.4k | TemplateParameterList *TempParams = D->getTemplateParameters(); |
1033 | 30.4k | TemplateParameterList *InstParams = SubstTemplateParams(TempParams); |
1034 | 30.4k | if (!InstParams) |
1035 | 0 | return nullptr; |
1036 | | |
1037 | 30.4k | TypeAliasDecl *Pattern = D->getTemplatedDecl(); |
1038 | | |
1039 | 30.4k | TypeAliasTemplateDecl *PrevAliasTemplate = nullptr; |
1040 | 30.4k | if (getPreviousDeclForInstantiation<TypedefNameDecl>(Pattern)) { |
1041 | 0 | DeclContext::lookup_result Found = Owner->lookup(Pattern->getDeclName()); |
1042 | 0 | if (!Found.empty()) { |
1043 | 0 | PrevAliasTemplate = dyn_cast<TypeAliasTemplateDecl>(Found.front()); |
1044 | 0 | } |
1045 | 0 | } |
1046 | | |
1047 | 30.4k | TypeAliasDecl *AliasInst = cast_or_null<TypeAliasDecl>( |
1048 | 30.4k | InstantiateTypedefNameDecl(Pattern, /*IsTypeAlias=*/true)); |
1049 | 30.4k | if (!AliasInst) |
1050 | 0 | return nullptr; |
1051 | | |
1052 | 30.4k | TypeAliasTemplateDecl *Inst |
1053 | 30.4k | = TypeAliasTemplateDecl::Create(SemaRef.Context, Owner, D->getLocation(), |
1054 | 30.4k | D->getDeclName(), InstParams, AliasInst); |
1055 | 30.4k | AliasInst->setDescribedAliasTemplate(Inst); |
1056 | 30.4k | if (PrevAliasTemplate) |
1057 | 0 | Inst->setPreviousDecl(PrevAliasTemplate); |
1058 | | |
1059 | 30.4k | Inst->setAccess(D->getAccess()); |
1060 | | |
1061 | 30.4k | if (!PrevAliasTemplate) |
1062 | 30.4k | Inst->setInstantiatedFromMemberTemplate(D); |
1063 | | |
1064 | 30.4k | Owner->addDecl(Inst); |
1065 | | |
1066 | 30.4k | return Inst; |
1067 | 30.4k | } |
1068 | | |
1069 | 45 | Decl *TemplateDeclInstantiator::VisitBindingDecl(BindingDecl *D) { |
1070 | 45 | auto *NewBD = BindingDecl::Create(SemaRef.Context, Owner, D->getLocation(), |
1071 | 45 | D->getIdentifier()); |
1072 | 45 | NewBD->setReferenced(D->isReferenced()); |
1073 | 45 | SemaRef.CurrentInstantiationScope->InstantiatedLocal(D, NewBD); |
1074 | 45 | return NewBD; |
1075 | 45 | } |
1076 | | |
1077 | 27 | Decl *TemplateDeclInstantiator::VisitDecompositionDecl(DecompositionDecl *D) { |
1078 | | // Transform the bindings first. |
1079 | 27 | SmallVector<BindingDecl*, 16> NewBindings; |
1080 | 27 | for (auto *OldBD : D->bindings()) |
1081 | 45 | NewBindings.push_back(cast<BindingDecl>(VisitBindingDecl(OldBD))); |
1082 | 27 | ArrayRef<BindingDecl*> NewBindingArray = NewBindings; |
1083 | | |
1084 | 27 | auto *NewDD = cast_or_null<DecompositionDecl>( |
1085 | 27 | VisitVarDecl(D, /*InstantiatingVarTemplate=*/false, &NewBindingArray)); |
1086 | | |
1087 | 27 | if (!NewDD || NewDD->isInvalidDecl()) |
1088 | 8 | for (auto *NewBD : NewBindings) |
1089 | 15 | NewBD->setInvalidDecl(); |
1090 | | |
1091 | 27 | return NewDD; |
1092 | 27 | } |
1093 | | |
1094 | 379k | Decl *TemplateDeclInstantiator::VisitVarDecl(VarDecl *D) { |
1095 | 379k | return VisitVarDecl(D, /*InstantiatingVarTemplate=*/false); |
1096 | 379k | } |
1097 | | |
1098 | | Decl *TemplateDeclInstantiator::VisitVarDecl(VarDecl *D, |
1099 | | bool InstantiatingVarTemplate, |
1100 | 379k | ArrayRef<BindingDecl*> *Bindings) { |
1101 | | |
1102 | | // Do substitution on the type of the declaration |
1103 | 379k | TypeSourceInfo *DI = SemaRef.SubstType( |
1104 | 379k | D->getTypeSourceInfo(), TemplateArgs, D->getTypeSpecStartLoc(), |
1105 | 379k | D->getDeclName(), /*AllowDeducedTST*/true); |
1106 | 379k | if (!DI) |
1107 | 83 | return nullptr; |
1108 | | |
1109 | 379k | if (DI->getType()->isFunctionType()) { |
1110 | 6 | SemaRef.Diag(D->getLocation(), diag::err_variable_instantiates_to_function) |
1111 | 6 | << D->isStaticDataMember() << DI->getType(); |
1112 | 6 | return nullptr; |
1113 | 6 | } |
1114 | | |
1115 | 379k | DeclContext *DC = Owner; |
1116 | 379k | if (D->isLocalExternDecl()) |
1117 | 88 | SemaRef.adjustContextForLocalExternDecl(DC); |
1118 | | |
1119 | | // Build the instantiated declaration. |
1120 | 379k | VarDecl *Var; |
1121 | 379k | if (Bindings) |
1122 | 27 | Var = DecompositionDecl::Create(SemaRef.Context, DC, D->getInnerLocStart(), |
1123 | 27 | D->getLocation(), DI->getType(), DI, |
1124 | 27 | D->getStorageClass(), *Bindings); |
1125 | 379k | else |
1126 | 379k | Var = VarDecl::Create(SemaRef.Context, DC, D->getInnerLocStart(), |
1127 | 379k | D->getLocation(), D->getIdentifier(), DI->getType(), |
1128 | 379k | DI, D->getStorageClass()); |
1129 | | |
1130 | | // In ARC, infer 'retaining' for variables of retainable type. |
1131 | 379k | if (SemaRef.getLangOpts().ObjCAutoRefCount && |
1132 | 379k | SemaRef.inferObjCARCLifetime(Var)57 ) |
1133 | 0 | Var->setInvalidDecl(); |
1134 | | |
1135 | 379k | if (SemaRef.getLangOpts().OpenCL) |
1136 | 33 | SemaRef.deduceOpenCLAddressSpace(Var); |
1137 | | |
1138 | | // Substitute the nested name specifier, if any. |
1139 | 379k | if (SubstQualifier(D, Var)) |
1140 | 1 | return nullptr; |
1141 | | |
1142 | 379k | SemaRef.BuildVariableInstantiation(Var, D, TemplateArgs, LateAttrs, Owner, |
1143 | 379k | StartingScope, InstantiatingVarTemplate); |
1144 | 379k | if (D->isNRVOVariable() && !Var->isInvalidDecl()4.43k ) { |
1145 | 4.41k | QualType RT; |
1146 | 4.41k | if (auto *F = dyn_cast<FunctionDecl>(DC)) |
1147 | 4.41k | RT = F->getReturnType(); |
1148 | 4 | else if (isa<BlockDecl>(DC)) |
1149 | 4 | RT = cast<FunctionType>(SemaRef.getCurBlock()->FunctionType) |
1150 | 4 | ->getReturnType(); |
1151 | 0 | else |
1152 | 0 | llvm_unreachable("Unknown context type"); |
1153 | | |
1154 | | // This is the last chance we have of checking copy elision eligibility |
1155 | | // for functions in dependent contexts. The sema actions for building |
1156 | | // the return statement during template instantiation will have no effect |
1157 | | // regarding copy elision, since NRVO propagation runs on the scope exit |
1158 | | // actions, and these are not run on instantiation. |
1159 | | // This might run through some VarDecls which were returned from non-taken |
1160 | | // 'if constexpr' branches, and these will end up being constructed on the |
1161 | | // return slot even if they will never be returned, as a sort of accidental |
1162 | | // 'optimization'. Notably, functions with 'auto' return types won't have it |
1163 | | // deduced by this point. Coupled with the limitation described |
1164 | | // previously, this makes it very hard to support copy elision for these. |
1165 | 4.41k | Sema::NamedReturnInfo Info = SemaRef.getNamedReturnInfo(Var); |
1166 | 4.41k | bool NRVO = SemaRef.getCopyElisionCandidate(Info, RT) != nullptr; |
1167 | 4.41k | Var->setNRVOVariable(NRVO); |
1168 | 4.41k | } |
1169 | | |
1170 | 379k | Var->setImplicit(D->isImplicit()); |
1171 | | |
1172 | 379k | if (Var->isStaticLocal()) |
1173 | 789 | SemaRef.CheckStaticLocalForDllExport(Var); |
1174 | | |
1175 | 379k | return Var; |
1176 | 379k | } |
1177 | | |
1178 | 186k | Decl *TemplateDeclInstantiator::VisitAccessSpecDecl(AccessSpecDecl *D) { |
1179 | 186k | AccessSpecDecl* AD |
1180 | 186k | = AccessSpecDecl::Create(SemaRef.Context, D->getAccess(), Owner, |
1181 | 186k | D->getAccessSpecifierLoc(), D->getColonLoc()); |
1182 | 186k | Owner->addHiddenDecl(AD); |
1183 | 186k | return AD; |
1184 | 186k | } |
1185 | | |
1186 | 74.3k | Decl *TemplateDeclInstantiator::VisitFieldDecl(FieldDecl *D) { |
1187 | 74.3k | bool Invalid = false; |
1188 | 74.3k | TypeSourceInfo *DI = D->getTypeSourceInfo(); |
1189 | 74.3k | if (DI->getType()->isInstantiationDependentType() || |
1190 | 74.3k | DI->getType()->isVariablyModifiedType()13.3k ) { |
1191 | 61.0k | DI = SemaRef.SubstType(DI, TemplateArgs, |
1192 | 61.0k | D->getLocation(), D->getDeclName()); |
1193 | 61.0k | if (!DI) { |
1194 | 62 | DI = D->getTypeSourceInfo(); |
1195 | 62 | Invalid = true; |
1196 | 60.9k | } else if (DI->getType()->isFunctionType()) { |
1197 | | // C++ [temp.arg.type]p3: |
1198 | | // If a declaration acquires a function type through a type |
1199 | | // dependent on a template-parameter and this causes a |
1200 | | // declaration that does not use the syntactic form of a |
1201 | | // function declarator to have function type, the program is |
1202 | | // ill-formed. |
1203 | 15 | SemaRef.Diag(D->getLocation(), diag::err_field_instantiates_to_function) |
1204 | 15 | << DI->getType(); |
1205 | 15 | Invalid = true; |
1206 | 15 | } |
1207 | 61.0k | } else { |
1208 | 13.3k | SemaRef.MarkDeclarationsReferencedInType(D->getLocation(), DI->getType()); |
1209 | 13.3k | } |
1210 | | |
1211 | 74.3k | Expr *BitWidth = D->getBitWidth(); |
1212 | 74.3k | if (Invalid) |
1213 | 77 | BitWidth = nullptr; |
1214 | 74.2k | else if (BitWidth) { |
1215 | | // The bit-width expression is a constant expression. |
1216 | 3.24k | EnterExpressionEvaluationContext Unevaluated( |
1217 | 3.24k | SemaRef, Sema::ExpressionEvaluationContext::ConstantEvaluated); |
1218 | | |
1219 | 3.24k | ExprResult InstantiatedBitWidth |
1220 | 3.24k | = SemaRef.SubstExpr(BitWidth, TemplateArgs); |
1221 | 3.24k | if (InstantiatedBitWidth.isInvalid()) { |
1222 | 0 | Invalid = true; |
1223 | 0 | BitWidth = nullptr; |
1224 | 0 | } else |
1225 | 3.24k | BitWidth = InstantiatedBitWidth.getAs<Expr>(); |
1226 | 3.24k | } |
1227 | | |
1228 | 74.3k | FieldDecl *Field = SemaRef.CheckFieldDecl(D->getDeclName(), |
1229 | 74.3k | DI->getType(), DI, |
1230 | 74.3k | cast<RecordDecl>(Owner), |
1231 | 74.3k | D->getLocation(), |
1232 | 74.3k | D->isMutable(), |
1233 | 74.3k | BitWidth, |
1234 | 74.3k | D->getInClassInitStyle(), |
1235 | 74.3k | D->getInnerLocStart(), |
1236 | 74.3k | D->getAccess(), |
1237 | 74.3k | nullptr); |
1238 | 74.3k | if (!Field) { |
1239 | 0 | cast<Decl>(Owner)->setInvalidDecl(); |
1240 | 0 | return nullptr; |
1241 | 0 | } |
1242 | | |
1243 | 74.3k | SemaRef.InstantiateAttrs(TemplateArgs, D, Field, LateAttrs, StartingScope); |
1244 | | |
1245 | 74.3k | if (Field->hasAttrs()) |
1246 | 36 | SemaRef.CheckAlignasUnderalignment(Field); |
1247 | | |
1248 | 74.3k | if (Invalid) |
1249 | 77 | Field->setInvalidDecl(); |
1250 | | |
1251 | 74.3k | if (!Field->getDeclName()) { |
1252 | | // Keep track of where this decl came from. |
1253 | 2.46k | SemaRef.Context.setInstantiatedFromUnnamedFieldDecl(Field, D); |
1254 | 2.46k | } |
1255 | 74.3k | if (CXXRecordDecl *Parent= dyn_cast<CXXRecordDecl>(Field->getDeclContext())) { |
1256 | 74.3k | if (Parent->isAnonymousStructOrUnion() && |
1257 | 74.3k | Parent->getRedeclContext()->isFunctionOrMethod()5.67k ) |
1258 | 0 | SemaRef.CurrentInstantiationScope->InstantiatedLocal(D, Field); |
1259 | 74.3k | } |
1260 | | |
1261 | 74.3k | Field->setImplicit(D->isImplicit()); |
1262 | 74.3k | Field->setAccess(D->getAccess()); |
1263 | 74.3k | Owner->addDecl(Field); |
1264 | | |
1265 | 74.3k | return Field; |
1266 | 74.3k | } |
1267 | | |
1268 | 29 | Decl *TemplateDeclInstantiator::VisitMSPropertyDecl(MSPropertyDecl *D) { |
1269 | 29 | bool Invalid = false; |
1270 | 29 | TypeSourceInfo *DI = D->getTypeSourceInfo(); |
1271 | | |
1272 | 29 | if (DI->getType()->isVariablyModifiedType()) { |
1273 | 0 | SemaRef.Diag(D->getLocation(), diag::err_property_is_variably_modified) |
1274 | 0 | << D; |
1275 | 0 | Invalid = true; |
1276 | 29 | } else if (DI->getType()->isInstantiationDependentType()) { |
1277 | 26 | DI = SemaRef.SubstType(DI, TemplateArgs, |
1278 | 26 | D->getLocation(), D->getDeclName()); |
1279 | 26 | if (!DI) { |
1280 | 0 | DI = D->getTypeSourceInfo(); |
1281 | 0 | Invalid = true; |
1282 | 26 | } else if (DI->getType()->isFunctionType()) { |
1283 | | // C++ [temp.arg.type]p3: |
1284 | | // If a declaration acquires a function type through a type |
1285 | | // dependent on a template-parameter and this causes a |
1286 | | // declaration that does not use the syntactic form of a |
1287 | | // function declarator to have function type, the program is |
1288 | | // ill-formed. |
1289 | 0 | SemaRef.Diag(D->getLocation(), diag::err_field_instantiates_to_function) |
1290 | 0 | << DI->getType(); |
1291 | 0 | Invalid = true; |
1292 | 0 | } |
1293 | 26 | } else { |
1294 | 3 | SemaRef.MarkDeclarationsReferencedInType(D->getLocation(), DI->getType()); |
1295 | 3 | } |
1296 | | |
1297 | 29 | MSPropertyDecl *Property = MSPropertyDecl::Create( |
1298 | 29 | SemaRef.Context, Owner, D->getLocation(), D->getDeclName(), DI->getType(), |
1299 | 29 | DI, D->getBeginLoc(), D->getGetterId(), D->getSetterId()); |
1300 | | |
1301 | 29 | SemaRef.InstantiateAttrs(TemplateArgs, D, Property, LateAttrs, |
1302 | 29 | StartingScope); |
1303 | | |
1304 | 29 | if (Invalid) |
1305 | 0 | Property->setInvalidDecl(); |
1306 | | |
1307 | 29 | Property->setAccess(D->getAccess()); |
1308 | 29 | Owner->addDecl(Property); |
1309 | | |
1310 | 29 | return Property; |
1311 | 29 | } |
1312 | | |
1313 | 5.67k | Decl *TemplateDeclInstantiator::VisitIndirectFieldDecl(IndirectFieldDecl *D) { |
1314 | 5.67k | NamedDecl **NamedChain = |
1315 | 5.67k | new (SemaRef.Context)NamedDecl*[D->getChainingSize()]; |
1316 | | |
1317 | 5.67k | int i = 0; |
1318 | 11.4k | for (auto *PI : D->chain()) { |
1319 | 11.4k | NamedDecl *Next = SemaRef.FindInstantiatedDecl(D->getLocation(), PI, |
1320 | 11.4k | TemplateArgs); |
1321 | 11.4k | if (!Next) |
1322 | 0 | return nullptr; |
1323 | | |
1324 | 11.4k | NamedChain[i++] = Next; |
1325 | 11.4k | } |
1326 | | |
1327 | 5.67k | QualType T = cast<FieldDecl>(NamedChain[i-1])->getType(); |
1328 | 5.67k | IndirectFieldDecl *IndirectField = IndirectFieldDecl::Create( |
1329 | 5.67k | SemaRef.Context, Owner, D->getLocation(), D->getIdentifier(), T, |
1330 | 5.67k | {NamedChain, D->getChainingSize()}); |
1331 | | |
1332 | 5.67k | for (const auto *Attr : D->attrs()) |
1333 | 0 | IndirectField->addAttr(Attr->clone(SemaRef.Context)); |
1334 | | |
1335 | 5.67k | IndirectField->setImplicit(D->isImplicit()); |
1336 | 5.67k | IndirectField->setAccess(D->getAccess()); |
1337 | 5.67k | Owner->addDecl(IndirectField); |
1338 | 5.67k | return IndirectField; |
1339 | 5.67k | } |
1340 | | |
1341 | 24.3k | Decl *TemplateDeclInstantiator::VisitFriendDecl(FriendDecl *D) { |
1342 | | // Handle friend type expressions by simply substituting template |
1343 | | // parameters into the pattern type and checking the result. |
1344 | 24.3k | if (TypeSourceInfo *Ty = D->getFriendType()) { |
1345 | 1.87k | TypeSourceInfo *InstTy; |
1346 | | // If this is an unsupported friend, don't bother substituting template |
1347 | | // arguments into it. The actual type referred to won't be used by any |
1348 | | // parts of Clang, and may not be valid for instantiating. Just use the |
1349 | | // same info for the instantiated friend. |
1350 | 1.87k | if (D->isUnsupportedFriend()) { |
1351 | 3 | InstTy = Ty; |
1352 | 1.87k | } else { |
1353 | 1.87k | InstTy = SemaRef.SubstType(Ty, TemplateArgs, |
1354 | 1.87k | D->getLocation(), DeclarationName()); |
1355 | 1.87k | } |
1356 | 1.87k | if (!InstTy) |
1357 | 1 | return nullptr; |
1358 | | |
1359 | 1.87k | FriendDecl *FD = SemaRef.CheckFriendTypeDecl(D->getBeginLoc(), |
1360 | 1.87k | D->getFriendLoc(), InstTy); |
1361 | 1.87k | if (!FD) |
1362 | 0 | return nullptr; |
1363 | | |
1364 | 1.87k | FD->setAccess(AS_public); |
1365 | 1.87k | FD->setUnsupportedFriend(D->isUnsupportedFriend()); |
1366 | 1.87k | Owner->addDecl(FD); |
1367 | 1.87k | return FD; |
1368 | 1.87k | } |
1369 | | |
1370 | 22.4k | NamedDecl *ND = D->getFriendDecl(); |
1371 | 22.4k | assert(ND && "friend decl must be a decl or a type!"); |
1372 | | |
1373 | | // All of the Visit implementations for the various potential friend |
1374 | | // declarations have to be carefully written to work for friend |
1375 | | // objects, with the most important detail being that the target |
1376 | | // decl should almost certainly not be placed in Owner. |
1377 | 0 | Decl *NewND = Visit(ND); |
1378 | 22.4k | if (!NewND) return nullptr6 ; |
1379 | | |
1380 | 22.4k | FriendDecl *FD = |
1381 | 22.4k | FriendDecl::Create(SemaRef.Context, Owner, D->getLocation(), |
1382 | 22.4k | cast<NamedDecl>(NewND), D->getFriendLoc()); |
1383 | 22.4k | FD->setAccess(AS_public); |
1384 | 22.4k | FD->setUnsupportedFriend(D->isUnsupportedFriend()); |
1385 | 22.4k | Owner->addDecl(FD); |
1386 | 22.4k | return FD; |
1387 | 22.4k | } |
1388 | | |
1389 | 50.6k | Decl *TemplateDeclInstantiator::VisitStaticAssertDecl(StaticAssertDecl *D) { |
1390 | 50.6k | Expr *AssertExpr = D->getAssertExpr(); |
1391 | | |
1392 | | // The expression in a static assertion is a constant expression. |
1393 | 50.6k | EnterExpressionEvaluationContext Unevaluated( |
1394 | 50.6k | SemaRef, Sema::ExpressionEvaluationContext::ConstantEvaluated); |
1395 | | |
1396 | 50.6k | ExprResult InstantiatedAssertExpr |
1397 | 50.6k | = SemaRef.SubstExpr(AssertExpr, TemplateArgs); |
1398 | 50.6k | if (InstantiatedAssertExpr.isInvalid()) |
1399 | 28 | return nullptr; |
1400 | | |
1401 | 50.6k | return SemaRef.BuildStaticAssertDeclaration(D->getLocation(), |
1402 | 50.6k | InstantiatedAssertExpr.get(), |
1403 | 50.6k | D->getMessage(), |
1404 | 50.6k | D->getRParenLoc(), |
1405 | 50.6k | D->isFailed()); |
1406 | 50.6k | } |
1407 | | |
1408 | 3.11k | Decl *TemplateDeclInstantiator::VisitEnumDecl(EnumDecl *D) { |
1409 | 3.11k | EnumDecl *PrevDecl = nullptr; |
1410 | 3.11k | if (EnumDecl *PatternPrev = getPreviousDeclForInstantiation(D)) { |
1411 | 22 | NamedDecl *Prev = SemaRef.FindInstantiatedDecl(D->getLocation(), |
1412 | 22 | PatternPrev, |
1413 | 22 | TemplateArgs); |
1414 | 22 | if (!Prev) return nullptr0 ; |
1415 | 22 | PrevDecl = cast<EnumDecl>(Prev); |
1416 | 22 | } |
1417 | | |
1418 | 3.11k | EnumDecl *Enum = |
1419 | 3.11k | EnumDecl::Create(SemaRef.Context, Owner, D->getBeginLoc(), |
1420 | 3.11k | D->getLocation(), D->getIdentifier(), PrevDecl, |
1421 | 3.11k | D->isScoped(), D->isScopedUsingClassTag(), D->isFixed()); |
1422 | 3.11k | if (D->isFixed()) { |
1423 | 180 | if (TypeSourceInfo *TI = D->getIntegerTypeSourceInfo()) { |
1424 | | // If we have type source information for the underlying type, it means it |
1425 | | // has been explicitly set by the user. Perform substitution on it before |
1426 | | // moving on. |
1427 | 105 | SourceLocation UnderlyingLoc = TI->getTypeLoc().getBeginLoc(); |
1428 | 105 | TypeSourceInfo *NewTI = SemaRef.SubstType(TI, TemplateArgs, UnderlyingLoc, |
1429 | 105 | DeclarationName()); |
1430 | 105 | if (!NewTI || SemaRef.CheckEnumUnderlyingType(NewTI)103 ) |
1431 | 4 | Enum->setIntegerType(SemaRef.Context.IntTy); |
1432 | 101 | else |
1433 | 101 | Enum->setIntegerTypeSourceInfo(NewTI); |
1434 | 105 | } else { |
1435 | 75 | assert(!D->getIntegerType()->isDependentType() |
1436 | 75 | && "Dependent type without type source info"); |
1437 | 0 | Enum->setIntegerType(D->getIntegerType()); |
1438 | 75 | } |
1439 | 180 | } |
1440 | | |
1441 | 0 | SemaRef.InstantiateAttrs(TemplateArgs, D, Enum); |
1442 | | |
1443 | 3.11k | Enum->setInstantiationOfMemberEnum(D, TSK_ImplicitInstantiation); |
1444 | 3.11k | Enum->setAccess(D->getAccess()); |
1445 | | // Forward the mangling number from the template to the instantiated decl. |
1446 | 3.11k | SemaRef.Context.setManglingNumber(Enum, SemaRef.Context.getManglingNumber(D)); |
1447 | | // See if the old tag was defined along with a declarator. |
1448 | | // If it did, mark the new tag as being associated with that declarator. |
1449 | 3.11k | if (DeclaratorDecl *DD = SemaRef.Context.getDeclaratorForUnnamedTagDecl(D)) |
1450 | 3 | SemaRef.Context.addDeclaratorForUnnamedTagDecl(Enum, DD); |
1451 | | // See if the old tag was defined along with a typedef. |
1452 | | // If it did, mark the new tag as being associated with that typedef. |
1453 | 3.11k | if (TypedefNameDecl *TND = SemaRef.Context.getTypedefNameForUnnamedTagDecl(D)) |
1454 | 0 | SemaRef.Context.addTypedefNameForUnnamedTagDecl(Enum, TND); |
1455 | 3.11k | if (SubstQualifier(D, Enum)) return nullptr0 ; |
1456 | 3.11k | Owner->addDecl(Enum); |
1457 | | |
1458 | 3.11k | EnumDecl *Def = D->getDefinition(); |
1459 | 3.11k | if (Def && Def != D3.04k ) { |
1460 | | // If this is an out-of-line definition of an enum member template, check |
1461 | | // that the underlying types match in the instantiation of both |
1462 | | // declarations. |
1463 | 45 | if (TypeSourceInfo *TI = Def->getIntegerTypeSourceInfo()) { |
1464 | 29 | SourceLocation UnderlyingLoc = TI->getTypeLoc().getBeginLoc(); |
1465 | 29 | QualType DefnUnderlying = |
1466 | 29 | SemaRef.SubstType(TI->getType(), TemplateArgs, |
1467 | 29 | UnderlyingLoc, DeclarationName()); |
1468 | 29 | SemaRef.CheckEnumRedeclaration(Def->getLocation(), Def->isScoped(), |
1469 | 29 | DefnUnderlying, /*IsFixed=*/true, Enum); |
1470 | 29 | } |
1471 | 45 | } |
1472 | | |
1473 | | // C++11 [temp.inst]p1: The implicit instantiation of a class template |
1474 | | // specialization causes the implicit instantiation of the declarations, but |
1475 | | // not the definitions of scoped member enumerations. |
1476 | | // |
1477 | | // DR1484 clarifies that enumeration definitions inside of a template |
1478 | | // declaration aren't considered entities that can be separately instantiated |
1479 | | // from the rest of the entity they are declared inside of. |
1480 | 3.11k | if (isDeclWithinFunction(D) ? D == Def80 : Def3.03k && !Enum->isScoped()2.97k ) { |
1481 | 2.96k | SemaRef.CurrentInstantiationScope->InstantiatedLocal(D, Enum); |
1482 | 2.96k | InstantiateEnumDefinition(Enum, Def); |
1483 | 2.96k | } |
1484 | | |
1485 | 3.11k | return Enum; |
1486 | 3.11k | } |
1487 | | |
1488 | | void TemplateDeclInstantiator::InstantiateEnumDefinition( |
1489 | 3.00k | EnumDecl *Enum, EnumDecl *Pattern) { |
1490 | 3.00k | Enum->startDefinition(); |
1491 | | |
1492 | | // Update the location to refer to the definition. |
1493 | 3.00k | Enum->setLocation(Pattern->getLocation()); |
1494 | | |
1495 | 3.00k | SmallVector<Decl*, 4> Enumerators; |
1496 | | |
1497 | 3.00k | EnumConstantDecl *LastEnumConst = nullptr; |
1498 | 3.10k | for (auto *EC : Pattern->enumerators()) { |
1499 | | // The specified value for the enumerator. |
1500 | 3.10k | ExprResult Value((Expr *)nullptr); |
1501 | 3.10k | if (Expr *UninstValue = EC->getInitExpr()) { |
1502 | | // The enumerator's value expression is a constant expression. |
1503 | 2.92k | EnterExpressionEvaluationContext Unevaluated( |
1504 | 2.92k | SemaRef, Sema::ExpressionEvaluationContext::ConstantEvaluated); |
1505 | | |
1506 | 2.92k | Value = SemaRef.SubstExpr(UninstValue, TemplateArgs); |
1507 | 2.92k | } |
1508 | | |
1509 | | // Drop the initial value and continue. |
1510 | 3.10k | bool isInvalid = false; |
1511 | 3.10k | if (Value.isInvalid()) { |
1512 | 17 | Value = nullptr; |
1513 | 17 | isInvalid = true; |
1514 | 17 | } |
1515 | | |
1516 | 3.10k | EnumConstantDecl *EnumConst |
1517 | 3.10k | = SemaRef.CheckEnumConstant(Enum, LastEnumConst, |
1518 | 3.10k | EC->getLocation(), EC->getIdentifier(), |
1519 | 3.10k | Value.get()); |
1520 | | |
1521 | 3.10k | if (isInvalid) { |
1522 | 17 | if (EnumConst) |
1523 | 17 | EnumConst->setInvalidDecl(); |
1524 | 17 | Enum->setInvalidDecl(); |
1525 | 17 | } |
1526 | | |
1527 | 3.10k | if (EnumConst) { |
1528 | 3.10k | SemaRef.InstantiateAttrs(TemplateArgs, EC, EnumConst); |
1529 | | |
1530 | 3.10k | EnumConst->setAccess(Enum->getAccess()); |
1531 | 3.10k | Enum->addDecl(EnumConst); |
1532 | 3.10k | Enumerators.push_back(EnumConst); |
1533 | 3.10k | LastEnumConst = EnumConst; |
1534 | | |
1535 | 3.10k | if (Pattern->getDeclContext()->isFunctionOrMethod() && |
1536 | 3.10k | !Enum->isScoped()65 ) { |
1537 | | // If the enumeration is within a function or method, record the enum |
1538 | | // constant as a local. |
1539 | 49 | SemaRef.CurrentInstantiationScope->InstantiatedLocal(EC, EnumConst); |
1540 | 49 | } |
1541 | 3.10k | } |
1542 | 3.10k | } |
1543 | | |
1544 | 3.00k | SemaRef.ActOnEnumBody(Enum->getLocation(), Enum->getBraceRange(), Enum, |
1545 | 3.00k | Enumerators, nullptr, ParsedAttributesView()); |
1546 | 3.00k | } |
1547 | | |
1548 | 0 | Decl *TemplateDeclInstantiator::VisitEnumConstantDecl(EnumConstantDecl *D) { |
1549 | 0 | llvm_unreachable("EnumConstantDecls can only occur within EnumDecls."); |
1550 | 0 | } |
1551 | | |
1552 | | Decl * |
1553 | 0 | TemplateDeclInstantiator::VisitBuiltinTemplateDecl(BuiltinTemplateDecl *D) { |
1554 | 0 | llvm_unreachable("BuiltinTemplateDecls cannot be instantiated."); |
1555 | 0 | } |
1556 | | |
1557 | 18.5k | Decl *TemplateDeclInstantiator::VisitClassTemplateDecl(ClassTemplateDecl *D) { |
1558 | 18.5k | bool isFriend = (D->getFriendObjectKind() != Decl::FOK_None); |
1559 | | |
1560 | | // Create a local instantiation scope for this class template, which |
1561 | | // will contain the instantiations of the template parameters. |
1562 | 18.5k | LocalInstantiationScope Scope(SemaRef); |
1563 | 18.5k | TemplateParameterList *TempParams = D->getTemplateParameters(); |
1564 | 18.5k | TemplateParameterList *InstParams = SubstTemplateParams(TempParams); |
1565 | 18.5k | if (!InstParams) |
1566 | 5 | return nullptr; |
1567 | | |
1568 | 18.5k | CXXRecordDecl *Pattern = D->getTemplatedDecl(); |
1569 | | |
1570 | | // Instantiate the qualifier. We have to do this first in case |
1571 | | // we're a friend declaration, because if we are then we need to put |
1572 | | // the new declaration in the appropriate context. |
1573 | 18.5k | NestedNameSpecifierLoc QualifierLoc = Pattern->getQualifierLoc(); |
1574 | 18.5k | if (QualifierLoc) { |
1575 | 8 | QualifierLoc = SemaRef.SubstNestedNameSpecifierLoc(QualifierLoc, |
1576 | 8 | TemplateArgs); |
1577 | 8 | if (!QualifierLoc) |
1578 | 0 | return nullptr; |
1579 | 8 | } |
1580 | | |
1581 | 18.5k | CXXRecordDecl *PrevDecl = nullptr; |
1582 | 18.5k | ClassTemplateDecl *PrevClassTemplate = nullptr; |
1583 | | |
1584 | 18.5k | if (!isFriend && getPreviousDeclForInstantiation(Pattern)13.4k ) { |
1585 | 4 | DeclContext::lookup_result Found = Owner->lookup(Pattern->getDeclName()); |
1586 | 4 | if (!Found.empty()) { |
1587 | 4 | PrevClassTemplate = dyn_cast<ClassTemplateDecl>(Found.front()); |
1588 | 4 | if (PrevClassTemplate) |
1589 | 4 | PrevDecl = PrevClassTemplate->getTemplatedDecl(); |
1590 | 4 | } |
1591 | 4 | } |
1592 | | |
1593 | | // If this isn't a friend, then it's a member template, in which |
1594 | | // case we just want to build the instantiation in the |
1595 | | // specialization. If it is a friend, we want to build it in |
1596 | | // the appropriate context. |
1597 | 18.5k | DeclContext *DC = Owner; |
1598 | 18.5k | if (isFriend) { |
1599 | 5.11k | if (QualifierLoc) { |
1600 | 8 | CXXScopeSpec SS; |
1601 | 8 | SS.Adopt(QualifierLoc); |
1602 | 8 | DC = SemaRef.computeDeclContext(SS); |
1603 | 8 | if (!DC) return nullptr0 ; |
1604 | 5.11k | } else { |
1605 | 5.11k | DC = SemaRef.FindInstantiatedContext(Pattern->getLocation(), |
1606 | 5.11k | Pattern->getDeclContext(), |
1607 | 5.11k | TemplateArgs); |
1608 | 5.11k | } |
1609 | | |
1610 | | // Look for a previous declaration of the template in the owning |
1611 | | // context. |
1612 | 5.11k | LookupResult R(SemaRef, Pattern->getDeclName(), Pattern->getLocation(), |
1613 | 5.11k | Sema::LookupOrdinaryName, |
1614 | 5.11k | SemaRef.forRedeclarationInCurContext()); |
1615 | 5.11k | SemaRef.LookupQualifiedName(R, DC); |
1616 | | |
1617 | 5.11k | if (R.isSingleResult()) { |
1618 | 4.96k | PrevClassTemplate = R.getAsSingle<ClassTemplateDecl>(); |
1619 | 4.96k | if (PrevClassTemplate) |
1620 | 4.96k | PrevDecl = PrevClassTemplate->getTemplatedDecl(); |
1621 | 4.96k | } |
1622 | | |
1623 | 5.11k | if (!PrevClassTemplate && QualifierLoc157 ) { |
1624 | 0 | SemaRef.Diag(Pattern->getLocation(), diag::err_not_tag_in_scope) |
1625 | 0 | << D->getTemplatedDecl()->getTagKind() << Pattern->getDeclName() << DC |
1626 | 0 | << QualifierLoc.getSourceRange(); |
1627 | 0 | return nullptr; |
1628 | 0 | } |
1629 | | |
1630 | 5.11k | if (PrevClassTemplate) { |
1631 | 4.96k | TemplateParameterList *PrevParams |
1632 | 4.96k | = PrevClassTemplate->getMostRecentDecl()->getTemplateParameters(); |
1633 | | |
1634 | | // Make sure the parameter lists match. |
1635 | 4.96k | if (!SemaRef.TemplateParameterListsAreEqual(InstParams, PrevParams, true, |
1636 | 4.96k | Sema::TPL_TemplateMatch)) |
1637 | 3 | return nullptr; |
1638 | | |
1639 | | // Do some additional validation, then merge default arguments |
1640 | | // from the existing declarations. |
1641 | 4.95k | if (SemaRef.CheckTemplateParameterList(InstParams, PrevParams, |
1642 | 4.95k | Sema::TPC_ClassTemplate)) |
1643 | 0 | return nullptr; |
1644 | 4.95k | } |
1645 | 5.11k | } |
1646 | | |
1647 | 18.5k | CXXRecordDecl *RecordInst = CXXRecordDecl::Create( |
1648 | 18.5k | SemaRef.Context, Pattern->getTagKind(), DC, Pattern->getBeginLoc(), |
1649 | 18.5k | Pattern->getLocation(), Pattern->getIdentifier(), PrevDecl, |
1650 | 18.5k | /*DelayTypeCreation=*/true); |
1651 | | |
1652 | 18.5k | if (QualifierLoc) |
1653 | 6 | RecordInst->setQualifierInfo(QualifierLoc); |
1654 | | |
1655 | 18.5k | SemaRef.InstantiateAttrsForDecl(TemplateArgs, Pattern, RecordInst, LateAttrs, |
1656 | 18.5k | StartingScope); |
1657 | | |
1658 | 18.5k | ClassTemplateDecl *Inst |
1659 | 18.5k | = ClassTemplateDecl::Create(SemaRef.Context, DC, D->getLocation(), |
1660 | 18.5k | D->getIdentifier(), InstParams, RecordInst); |
1661 | 18.5k | assert(!(isFriend && Owner->isDependentContext())); |
1662 | 0 | Inst->setPreviousDecl(PrevClassTemplate); |
1663 | | |
1664 | 18.5k | RecordInst->setDescribedClassTemplate(Inst); |
1665 | | |
1666 | 18.5k | if (isFriend) { |
1667 | 5.11k | if (PrevClassTemplate) |
1668 | 4.95k | Inst->setAccess(PrevClassTemplate->getAccess()); |
1669 | 157 | else |
1670 | 157 | Inst->setAccess(D->getAccess()); |
1671 | | |
1672 | 5.11k | Inst->setObjectOfFriendDecl(); |
1673 | | // TODO: do we want to track the instantiation progeny of this |
1674 | | // friend target decl? |
1675 | 13.4k | } else { |
1676 | 13.4k | Inst->setAccess(D->getAccess()); |
1677 | 13.4k | if (!PrevClassTemplate) |
1678 | 13.4k | Inst->setInstantiatedFromMemberTemplate(D); |
1679 | 13.4k | } |
1680 | | |
1681 | | // Trigger creation of the type for the instantiation. |
1682 | 18.5k | SemaRef.Context.getInjectedClassNameType(RecordInst, |
1683 | 18.5k | Inst->getInjectedClassNameSpecialization()); |
1684 | | |
1685 | | // Finish handling of friends. |
1686 | 18.5k | if (isFriend) { |
1687 | 5.11k | DC->makeDeclVisibleInContext(Inst); |
1688 | 5.11k | Inst->setLexicalDeclContext(Owner); |
1689 | 5.11k | RecordInst->setLexicalDeclContext(Owner); |
1690 | 5.11k | return Inst; |
1691 | 5.11k | } |
1692 | | |
1693 | 13.4k | if (D->isOutOfLine()) { |
1694 | 0 | Inst->setLexicalDeclContext(D->getLexicalDeclContext()); |
1695 | 0 | RecordInst->setLexicalDeclContext(D->getLexicalDeclContext()); |
1696 | 0 | } |
1697 | | |
1698 | 13.4k | Owner->addDecl(Inst); |
1699 | | |
1700 | 13.4k | if (!PrevClassTemplate) { |
1701 | | // Queue up any out-of-line partial specializations of this member |
1702 | | // class template; the client will force their instantiation once |
1703 | | // the enclosing class has been instantiated. |
1704 | 13.4k | SmallVector<ClassTemplatePartialSpecializationDecl *, 4> PartialSpecs; |
1705 | 13.4k | D->getPartialSpecializations(PartialSpecs); |
1706 | 20.4k | for (unsigned I = 0, N = PartialSpecs.size(); I != N; ++I6.97k ) |
1707 | 6.97k | if (PartialSpecs[I]->getFirstDecl()->isOutOfLine()) |
1708 | 9 | OutOfLinePartialSpecs.push_back(std::make_pair(Inst, PartialSpecs[I])); |
1709 | 13.4k | } |
1710 | | |
1711 | 13.4k | return Inst; |
1712 | 18.5k | } |
1713 | | |
1714 | | Decl * |
1715 | | TemplateDeclInstantiator::VisitClassTemplatePartialSpecializationDecl( |
1716 | 6.96k | ClassTemplatePartialSpecializationDecl *D) { |
1717 | 6.96k | ClassTemplateDecl *ClassTemplate = D->getSpecializedTemplate(); |
1718 | | |
1719 | | // Lookup the already-instantiated declaration in the instantiation |
1720 | | // of the class template and return that. |
1721 | 6.96k | DeclContext::lookup_result Found |
1722 | 6.96k | = Owner->lookup(ClassTemplate->getDeclName()); |
1723 | 6.96k | if (Found.empty()) |
1724 | 0 | return nullptr; |
1725 | | |
1726 | 6.96k | ClassTemplateDecl *InstClassTemplate |
1727 | 6.96k | = dyn_cast<ClassTemplateDecl>(Found.front()); |
1728 | 6.96k | if (!InstClassTemplate) |
1729 | 0 | return nullptr; |
1730 | | |
1731 | 6.96k | if (ClassTemplatePartialSpecializationDecl *Result |
1732 | 6.96k | = InstClassTemplate->findPartialSpecInstantiatedFromMember(D)) |
1733 | 0 | return Result; |
1734 | | |
1735 | 6.96k | return InstantiateClassTemplatePartialSpecialization(InstClassTemplate, D); |
1736 | 6.96k | } |
1737 | | |
1738 | 376 | Decl *TemplateDeclInstantiator::VisitVarTemplateDecl(VarTemplateDecl *D) { |
1739 | 376 | assert(D->getTemplatedDecl()->isStaticDataMember() && |
1740 | 376 | "Only static data member templates are allowed."); |
1741 | | |
1742 | | // Create a local instantiation scope for this variable template, which |
1743 | | // will contain the instantiations of the template parameters. |
1744 | 0 | LocalInstantiationScope Scope(SemaRef); |
1745 | 376 | TemplateParameterList *TempParams = D->getTemplateParameters(); |
1746 | 376 | TemplateParameterList *InstParams = SubstTemplateParams(TempParams); |
1747 | 376 | if (!InstParams) |
1748 | 0 | return nullptr; |
1749 | | |
1750 | 376 | VarDecl *Pattern = D->getTemplatedDecl(); |
1751 | 376 | VarTemplateDecl *PrevVarTemplate = nullptr; |
1752 | | |
1753 | 376 | if (getPreviousDeclForInstantiation(Pattern)) { |
1754 | 0 | DeclContext::lookup_result Found = Owner->lookup(Pattern->getDeclName()); |
1755 | 0 | if (!Found.empty()) |
1756 | 0 | PrevVarTemplate = dyn_cast<VarTemplateDecl>(Found.front()); |
1757 | 0 | } |
1758 | | |
1759 | 376 | VarDecl *VarInst = |
1760 | 376 | cast_or_null<VarDecl>(VisitVarDecl(Pattern, |
1761 | 376 | /*InstantiatingVarTemplate=*/true)); |
1762 | 376 | if (!VarInst) return nullptr3 ; |
1763 | | |
1764 | 373 | DeclContext *DC = Owner; |
1765 | | |
1766 | 373 | VarTemplateDecl *Inst = VarTemplateDecl::Create( |
1767 | 373 | SemaRef.Context, DC, D->getLocation(), D->getIdentifier(), InstParams, |
1768 | 373 | VarInst); |
1769 | 373 | VarInst->setDescribedVarTemplate(Inst); |
1770 | 373 | Inst->setPreviousDecl(PrevVarTemplate); |
1771 | | |
1772 | 373 | Inst->setAccess(D->getAccess()); |
1773 | 373 | if (!PrevVarTemplate) |
1774 | 373 | Inst->setInstantiatedFromMemberTemplate(D); |
1775 | | |
1776 | 373 | if (D->isOutOfLine()) { |
1777 | 0 | Inst->setLexicalDeclContext(D->getLexicalDeclContext()); |
1778 | 0 | VarInst->setLexicalDeclContext(D->getLexicalDeclContext()); |
1779 | 0 | } |
1780 | | |
1781 | 373 | Owner->addDecl(Inst); |
1782 | | |
1783 | 373 | if (!PrevVarTemplate) { |
1784 | | // Queue up any out-of-line partial specializations of this member |
1785 | | // variable template; the client will force their instantiation once |
1786 | | // the enclosing class has been instantiated. |
1787 | 373 | SmallVector<VarTemplatePartialSpecializationDecl *, 4> PartialSpecs; |
1788 | 373 | D->getPartialSpecializations(PartialSpecs); |
1789 | 421 | for (unsigned I = 0, N = PartialSpecs.size(); I != N; ++I48 ) |
1790 | 48 | if (PartialSpecs[I]->getFirstDecl()->isOutOfLine()) |
1791 | 7 | OutOfLineVarPartialSpecs.push_back( |
1792 | 7 | std::make_pair(Inst, PartialSpecs[I])); |
1793 | 373 | } |
1794 | | |
1795 | 373 | return Inst; |
1796 | 376 | } |
1797 | | |
1798 | | Decl *TemplateDeclInstantiator::VisitVarTemplatePartialSpecializationDecl( |
1799 | 43 | VarTemplatePartialSpecializationDecl *D) { |
1800 | 43 | assert(D->isStaticDataMember() && |
1801 | 43 | "Only static data member templates are allowed."); |
1802 | | |
1803 | 0 | VarTemplateDecl *VarTemplate = D->getSpecializedTemplate(); |
1804 | | |
1805 | | // Lookup the already-instantiated declaration and return that. |
1806 | 43 | DeclContext::lookup_result Found = Owner->lookup(VarTemplate->getDeclName()); |
1807 | 43 | assert(!Found.empty() && "Instantiation found nothing?"); |
1808 | | |
1809 | 0 | VarTemplateDecl *InstVarTemplate = dyn_cast<VarTemplateDecl>(Found.front()); |
1810 | 43 | assert(InstVarTemplate && "Instantiation did not find a variable template?"); |
1811 | | |
1812 | 43 | if (VarTemplatePartialSpecializationDecl *Result = |
1813 | 43 | InstVarTemplate->findPartialSpecInstantiatedFromMember(D)) |
1814 | 0 | return Result; |
1815 | | |
1816 | 43 | return InstantiateVarTemplatePartialSpecialization(InstVarTemplate, D); |
1817 | 43 | } |
1818 | | |
1819 | | Decl * |
1820 | 235k | TemplateDeclInstantiator::VisitFunctionTemplateDecl(FunctionTemplateDecl *D) { |
1821 | | // Create a local instantiation scope for this function template, which |
1822 | | // will contain the instantiations of the template parameters and then get |
1823 | | // merged with the local instantiation scope for the function template |
1824 | | // itself. |
1825 | 235k | LocalInstantiationScope Scope(SemaRef); |
1826 | | |
1827 | 235k | TemplateParameterList *TempParams = D->getTemplateParameters(); |
1828 | 235k | TemplateParameterList *InstParams = SubstTemplateParams(TempParams); |
1829 | 235k | if (!InstParams) |
1830 | 1 | return nullptr; |
1831 | | |
1832 | 235k | FunctionDecl *Instantiated = nullptr; |
1833 | 235k | if (CXXMethodDecl *DMethod = dyn_cast<CXXMethodDecl>(D->getTemplatedDecl())) |
1834 | 227k | Instantiated = cast_or_null<FunctionDecl>(VisitCXXMethodDecl(DMethod, |
1835 | 227k | InstParams)); |
1836 | 7.88k | else |
1837 | 7.88k | Instantiated = cast_or_null<FunctionDecl>(VisitFunctionDecl( |
1838 | 7.88k | D->getTemplatedDecl(), |
1839 | 7.88k | InstParams)); |
1840 | | |
1841 | 235k | if (!Instantiated) |
1842 | 4 | return nullptr; |
1843 | | |
1844 | | // Link the instantiated function template declaration to the function |
1845 | | // template from which it was instantiated. |
1846 | 235k | FunctionTemplateDecl *InstTemplate |
1847 | 235k | = Instantiated->getDescribedFunctionTemplate(); |
1848 | 235k | InstTemplate->setAccess(D->getAccess()); |
1849 | 235k | assert(InstTemplate && |
1850 | 235k | "VisitFunctionDecl/CXXMethodDecl didn't create a template!"); |
1851 | | |
1852 | 0 | bool isFriend = (InstTemplate->getFriendObjectKind() != Decl::FOK_None); |
1853 | | |
1854 | | // Link the instantiation back to the pattern *unless* this is a |
1855 | | // non-definition friend declaration. |
1856 | 235k | if (!InstTemplate->getInstantiatedFromMemberTemplate() && |
1857 | 235k | !(235k isFriend235k && !D->getTemplatedDecl()->isThisDeclarationADefinition()7.83k )) |
1858 | 227k | InstTemplate->setInstantiatedFromMemberTemplate(D); |
1859 | | |
1860 | | // Make declarations visible in the appropriate context. |
1861 | 235k | if (!isFriend) { |
1862 | 227k | Owner->addDecl(InstTemplate); |
1863 | 227k | } else if (7.89k InstTemplate->getDeclContext()->isRecord()7.89k && |
1864 | 7.89k | !getPreviousDeclForInstantiation(D)14 ) { |
1865 | 14 | SemaRef.CheckFriendAccess(InstTemplate); |
1866 | 14 | } |
1867 | | |
1868 | 235k | return InstTemplate; |
1869 | 235k | } |
1870 | | |
1871 | 948k | Decl *TemplateDeclInstantiator::VisitCXXRecordDecl(CXXRecordDecl *D) { |
1872 | 948k | CXXRecordDecl *PrevDecl = nullptr; |
1873 | 948k | if (CXXRecordDecl *PatternPrev = getPreviousDeclForInstantiation(D)) { |
1874 | 28 | NamedDecl *Prev = SemaRef.FindInstantiatedDecl(D->getLocation(), |
1875 | 28 | PatternPrev, |
1876 | 28 | TemplateArgs); |
1877 | 28 | if (!Prev) return nullptr0 ; |
1878 | 28 | PrevDecl = cast<CXXRecordDecl>(Prev); |
1879 | 28 | } |
1880 | | |
1881 | 948k | CXXRecordDecl *Record = nullptr; |
1882 | 948k | bool IsInjectedClassName = D->isInjectedClassName(); |
1883 | 948k | if (D->isLambda()) |
1884 | 0 | Record = CXXRecordDecl::CreateLambda( |
1885 | 0 | SemaRef.Context, Owner, D->getLambdaTypeInfo(), D->getLocation(), |
1886 | 0 | D->getLambdaDependencyKind(), D->isGenericLambda(), |
1887 | 0 | D->getLambdaCaptureDefault()); |
1888 | 948k | else |
1889 | 948k | Record = CXXRecordDecl::Create(SemaRef.Context, D->getTagKind(), Owner, |
1890 | 948k | D->getBeginLoc(), D->getLocation(), |
1891 | 948k | D->getIdentifier(), PrevDecl, |
1892 | 948k | /*DelayTypeCreation=*/IsInjectedClassName); |
1893 | | // Link the type of the injected-class-name to that of the outer class. |
1894 | 948k | if (IsInjectedClassName) |
1895 | 926k | (void)SemaRef.Context.getTypeDeclType(Record, cast<CXXRecordDecl>(Owner)); |
1896 | | |
1897 | | // Substitute the nested name specifier, if any. |
1898 | 948k | if (SubstQualifier(D, Record)) |
1899 | 0 | return nullptr; |
1900 | | |
1901 | 948k | SemaRef.InstantiateAttrsForDecl(TemplateArgs, D, Record, LateAttrs, |
1902 | 948k | StartingScope); |
1903 | | |
1904 | 948k | Record->setImplicit(D->isImplicit()); |
1905 | | // FIXME: Check against AS_none is an ugly hack to work around the issue that |
1906 | | // the tag decls introduced by friend class declarations don't have an access |
1907 | | // specifier. Remove once this area of the code gets sorted out. |
1908 | 948k | if (D->getAccess() != AS_none) |
1909 | 946k | Record->setAccess(D->getAccess()); |
1910 | 948k | if (!IsInjectedClassName) |
1911 | 21.5k | Record->setInstantiationOfMemberClass(D, TSK_ImplicitInstantiation); |
1912 | | |
1913 | | // If the original function was part of a friend declaration, |
1914 | | // inherit its namespace state. |
1915 | 948k | if (D->getFriendObjectKind()) |
1916 | 0 | Record->setObjectOfFriendDecl(); |
1917 | | |
1918 | | // Make sure that anonymous structs and unions are recorded. |
1919 | 948k | if (D->isAnonymousStructOrUnion()) |
1920 | 2.46k | Record->setAnonymousStructOrUnion(true); |
1921 | | |
1922 | 948k | if (D->isLocalClass()) |
1923 | 2.57k | SemaRef.CurrentInstantiationScope->InstantiatedLocal(D, Record); |
1924 | | |
1925 | | // Forward the mangling number from the template to the instantiated decl. |
1926 | 948k | SemaRef.Context.setManglingNumber(Record, |
1927 | 948k | SemaRef.Context.getManglingNumber(D)); |
1928 | | |
1929 | | // See if the old tag was defined along with a declarator. |
1930 | | // If it did, mark the new tag as being associated with that declarator. |
1931 | 948k | if (DeclaratorDecl *DD = SemaRef.Context.getDeclaratorForUnnamedTagDecl(D)) |
1932 | 3 | SemaRef.Context.addDeclaratorForUnnamedTagDecl(Record, DD); |
1933 | | |
1934 | | // See if the old tag was defined along with a typedef. |
1935 | | // If it did, mark the new tag as being associated with that typedef. |
1936 | 948k | if (TypedefNameDecl *TND = SemaRef.Context.getTypedefNameForUnnamedTagDecl(D)) |
1937 | 0 | SemaRef.Context.addTypedefNameForUnnamedTagDecl(Record, TND); |
1938 | | |
1939 | 948k | Owner->addDecl(Record); |
1940 | | |
1941 | | // DR1484 clarifies that the members of a local class are instantiated as part |
1942 | | // of the instantiation of their enclosing entity. |
1943 | 948k | if (D->isCompleteDefinition() && D->isLocalClass()21.0k ) { |
1944 | 2.28k | Sema::LocalEagerInstantiationScope LocalInstantiations(SemaRef); |
1945 | | |
1946 | 2.28k | SemaRef.InstantiateClass(D->getLocation(), Record, D, TemplateArgs, |
1947 | 2.28k | TSK_ImplicitInstantiation, |
1948 | 2.28k | /*Complain=*/true); |
1949 | | |
1950 | | // For nested local classes, we will instantiate the members when we |
1951 | | // reach the end of the outermost (non-nested) local class. |
1952 | 2.28k | if (!D->isCXXClassMember()) |
1953 | 1.83k | SemaRef.InstantiateClassMembers(D->getLocation(), Record, TemplateArgs, |
1954 | 1.83k | TSK_ImplicitInstantiation); |
1955 | | |
1956 | | // This class may have local implicit instantiations that need to be |
1957 | | // performed within this scope. |
1958 | 2.28k | LocalInstantiations.perform(); |
1959 | 2.28k | } |
1960 | | |
1961 | 948k | SemaRef.DiagnoseUnusedNestedTypedefs(Record); |
1962 | | |
1963 | 948k | if (IsInjectedClassName) |
1964 | 926k | assert(Record->isInjectedClassName() && "Broken injected-class-name"); |
1965 | | |
1966 | 0 | return Record; |
1967 | 948k | } |
1968 | | |
1969 | | /// Adjust the given function type for an instantiation of the |
1970 | | /// given declaration, to cope with modifications to the function's type that |
1971 | | /// aren't reflected in the type-source information. |
1972 | | /// |
1973 | | /// \param D The declaration we're instantiating. |
1974 | | /// \param TInfo The already-instantiated type. |
1975 | | static QualType adjustFunctionTypeForInstantiation(ASTContext &Context, |
1976 | | FunctionDecl *D, |
1977 | 1.27M | TypeSourceInfo *TInfo) { |
1978 | 1.27M | const FunctionProtoType *OrigFunc |
1979 | 1.27M | = D->getType()->castAs<FunctionProtoType>(); |
1980 | 1.27M | const FunctionProtoType *NewFunc |
1981 | 1.27M | = TInfo->getType()->castAs<FunctionProtoType>(); |
1982 | 1.27M | if (OrigFunc->getExtInfo() == NewFunc->getExtInfo()) |
1983 | 1.27M | return TInfo->getType(); |
1984 | | |
1985 | 248 | FunctionProtoType::ExtProtoInfo NewEPI = NewFunc->getExtProtoInfo(); |
1986 | 248 | NewEPI.ExtInfo = OrigFunc->getExtInfo(); |
1987 | 248 | return Context.getFunctionType(NewFunc->getReturnType(), |
1988 | 248 | NewFunc->getParamTypes(), NewEPI); |
1989 | 1.27M | } |
1990 | | |
1991 | | /// Normal class members are of more specific types and therefore |
1992 | | /// don't make it here. This function serves three purposes: |
1993 | | /// 1) instantiating function templates |
1994 | | /// 2) substituting friend declarations |
1995 | | /// 3) substituting deduction guide declarations for nested class templates |
1996 | | Decl *TemplateDeclInstantiator::VisitFunctionDecl( |
1997 | | FunctionDecl *D, TemplateParameterList *TemplateParams, |
1998 | 361k | RewriteKind FunctionRewriteKind) { |
1999 | | // Check whether there is already a function template specialization for |
2000 | | // this declaration. |
2001 | 361k | FunctionTemplateDecl *FunctionTemplate = D->getDescribedFunctionTemplate(); |
2002 | 361k | if (FunctionTemplate && !TemplateParams351k ) { |
2003 | 343k | ArrayRef<TemplateArgument> Innermost = TemplateArgs.getInnermost(); |
2004 | | |
2005 | 343k | void *InsertPos = nullptr; |
2006 | 343k | FunctionDecl *SpecFunc |
2007 | 343k | = FunctionTemplate->findSpecialization(Innermost, InsertPos); |
2008 | | |
2009 | | // If we already have a function template specialization, return it. |
2010 | 343k | if (SpecFunc) |
2011 | 155k | return SpecFunc; |
2012 | 343k | } |
2013 | | |
2014 | 205k | bool isFriend; |
2015 | 205k | if (FunctionTemplate) |
2016 | 195k | isFriend = (FunctionTemplate->getFriendObjectKind() != Decl::FOK_None); |
2017 | 9.53k | else |
2018 | 9.53k | isFriend = (D->getFriendObjectKind() != Decl::FOK_None); |
2019 | | |
2020 | 205k | bool MergeWithParentScope = (TemplateParams != nullptr) || |
2021 | 205k | Owner->isFunctionOrMethod()197k || |
2022 | 205k | !(197k isa<Decl>(Owner)197k && |
2023 | 197k | cast<Decl>(Owner)->isDefinedOutsideFunctionOrMethod()); |
2024 | 205k | LocalInstantiationScope Scope(SemaRef, MergeWithParentScope); |
2025 | | |
2026 | 205k | ExplicitSpecifier InstantiatedExplicitSpecifier; |
2027 | 205k | if (auto *DGuide = dyn_cast<CXXDeductionGuideDecl>(D)) { |
2028 | 364 | InstantiatedExplicitSpecifier = instantiateExplicitSpecifier( |
2029 | 364 | SemaRef, TemplateArgs, DGuide->getExplicitSpecifier(), DGuide); |
2030 | 364 | if (InstantiatedExplicitSpecifier.isInvalid()) |
2031 | 10 | return nullptr; |
2032 | 364 | } |
2033 | | |
2034 | 205k | SmallVector<ParmVarDecl *, 4> Params; |
2035 | 205k | TypeSourceInfo *TInfo = SubstFunctionType(D, Params); |
2036 | 205k | if (!TInfo) |
2037 | 29.2k | return nullptr; |
2038 | 176k | QualType T = adjustFunctionTypeForInstantiation(SemaRef.Context, D, TInfo); |
2039 | | |
2040 | 176k | if (TemplateParams && TemplateParams->size()7.88k ) { |
2041 | 7.88k | auto *LastParam = |
2042 | 7.88k | dyn_cast<TemplateTypeParmDecl>(TemplateParams->asArray().back()); |
2043 | 7.88k | if (LastParam && LastParam->isImplicit()4.31k && |
2044 | 7.88k | LastParam->hasTypeConstraint()0 ) { |
2045 | | // In abbreviated templates, the type-constraints of invented template |
2046 | | // type parameters are instantiated with the function type, invalidating |
2047 | | // the TemplateParameterList which relied on the template type parameter |
2048 | | // not having a type constraint. Recreate the TemplateParameterList with |
2049 | | // the updated parameter list. |
2050 | 0 | TemplateParams = TemplateParameterList::Create( |
2051 | 0 | SemaRef.Context, TemplateParams->getTemplateLoc(), |
2052 | 0 | TemplateParams->getLAngleLoc(), TemplateParams->asArray(), |
2053 | 0 | TemplateParams->getRAngleLoc(), TemplateParams->getRequiresClause()); |
2054 | 0 | } |
2055 | 7.88k | } |
2056 | | |
2057 | 176k | NestedNameSpecifierLoc QualifierLoc = D->getQualifierLoc(); |
2058 | 176k | if (QualifierLoc) { |
2059 | 10 | QualifierLoc = SemaRef.SubstNestedNameSpecifierLoc(QualifierLoc, |
2060 | 10 | TemplateArgs); |
2061 | 10 | if (!QualifierLoc) |
2062 | 0 | return nullptr; |
2063 | 10 | } |
2064 | | |
2065 | | // FIXME: Concepts: Do not substitute into constraint expressions |
2066 | 176k | Expr *TrailingRequiresClause = D->getTrailingRequiresClause(); |
2067 | 176k | if (TrailingRequiresClause) { |
2068 | 135 | EnterExpressionEvaluationContext ConstantEvaluated( |
2069 | 135 | SemaRef, Sema::ExpressionEvaluationContext::Unevaluated); |
2070 | 135 | ExprResult SubstRC = SemaRef.SubstExpr(TrailingRequiresClause, |
2071 | 135 | TemplateArgs); |
2072 | 135 | if (SubstRC.isInvalid()) |
2073 | 0 | return nullptr; |
2074 | 135 | TrailingRequiresClause = SubstRC.get(); |
2075 | 135 | if (!SemaRef.CheckConstraintExpression(TrailingRequiresClause)) |
2076 | 0 | return nullptr; |
2077 | 135 | } |
2078 | | |
2079 | | // If we're instantiating a local function declaration, put the result |
2080 | | // in the enclosing namespace; otherwise we need to find the instantiated |
2081 | | // context. |
2082 | 176k | DeclContext *DC; |
2083 | 176k | if (D->isLocalExternDecl()) { |
2084 | 108 | DC = Owner; |
2085 | 108 | SemaRef.adjustContextForLocalExternDecl(DC); |
2086 | 176k | } else if (isFriend && QualifierLoc17.3k ) { |
2087 | 10 | CXXScopeSpec SS; |
2088 | 10 | SS.Adopt(QualifierLoc); |
2089 | 10 | DC = SemaRef.computeDeclContext(SS); |
2090 | 10 | if (!DC) return nullptr0 ; |
2091 | 176k | } else { |
2092 | 176k | DC = SemaRef.FindInstantiatedContext(D->getLocation(), D->getDeclContext(), |
2093 | 176k | TemplateArgs); |
2094 | 176k | } |
2095 | | |
2096 | 176k | DeclarationNameInfo NameInfo |
2097 | 176k | = SemaRef.SubstDeclarationNameInfo(D->getNameInfo(), TemplateArgs); |
2098 | | |
2099 | 176k | if (FunctionRewriteKind != RewriteKind::None) |
2100 | 30 | adjustForRewrite(FunctionRewriteKind, D, T, TInfo, NameInfo); |
2101 | | |
2102 | 176k | FunctionDecl *Function; |
2103 | 176k | if (auto *DGuide = dyn_cast<CXXDeductionGuideDecl>(D)) { |
2104 | 351 | Function = CXXDeductionGuideDecl::Create( |
2105 | 351 | SemaRef.Context, DC, D->getInnerLocStart(), |
2106 | 351 | InstantiatedExplicitSpecifier, NameInfo, T, TInfo, |
2107 | 351 | D->getSourceRange().getEnd()); |
2108 | 351 | if (DGuide->isCopyDeductionCandidate()) |
2109 | 21 | cast<CXXDeductionGuideDecl>(Function)->setIsCopyDeductionCandidate(); |
2110 | 351 | Function->setAccess(D->getAccess()); |
2111 | 175k | } else { |
2112 | 175k | Function = FunctionDecl::Create( |
2113 | 175k | SemaRef.Context, DC, D->getInnerLocStart(), NameInfo, T, TInfo, |
2114 | 175k | D->getCanonicalDecl()->getStorageClass(), D->UsesFPIntrin(), |
2115 | 175k | D->isInlineSpecified(), D->hasWrittenPrototype(), D->getConstexprKind(), |
2116 | 175k | TrailingRequiresClause); |
2117 | 175k | Function->setRangeEnd(D->getSourceRange().getEnd()); |
2118 | 175k | } |
2119 | | |
2120 | 176k | if (D->isInlined()) |
2121 | 70.9k | Function->setImplicitlyInline(); |
2122 | | |
2123 | 176k | if (QualifierLoc) |
2124 | 10 | Function->setQualifierInfo(QualifierLoc); |
2125 | | |
2126 | 176k | if (D->isLocalExternDecl()) |
2127 | 108 | Function->setLocalExternDecl(); |
2128 | | |
2129 | 176k | DeclContext *LexicalDC = Owner; |
2130 | 176k | if (!isFriend && D->isOutOfLine()158k && !D->isLocalExternDecl()0 ) { |
2131 | 0 | assert(D->getDeclContext()->isFileContext()); |
2132 | 0 | LexicalDC = D->getDeclContext(); |
2133 | 0 | } |
2134 | | |
2135 | 0 | Function->setLexicalDeclContext(LexicalDC); |
2136 | | |
2137 | | // Attach the parameters |
2138 | 440k | for (unsigned P = 0; P < Params.size(); ++P264k ) |
2139 | 264k | if (Params[P]) |
2140 | 264k | Params[P]->setOwningFunction(Function); |
2141 | 176k | Function->setParams(Params); |
2142 | | |
2143 | 176k | if (TrailingRequiresClause) |
2144 | 135 | Function->setTrailingRequiresClause(TrailingRequiresClause); |
2145 | | |
2146 | 176k | if (TemplateParams) { |
2147 | | // Our resulting instantiation is actually a function template, since we |
2148 | | // are substituting only the outer template parameters. For example, given |
2149 | | // |
2150 | | // template<typename T> |
2151 | | // struct X { |
2152 | | // template<typename U> friend void f(T, U); |
2153 | | // }; |
2154 | | // |
2155 | | // X<int> x; |
2156 | | // |
2157 | | // We are instantiating the friend function template "f" within X<int>, |
2158 | | // which means substituting int for T, but leaving "f" as a friend function |
2159 | | // template. |
2160 | | // Build the function template itself. |
2161 | 7.88k | FunctionTemplate = FunctionTemplateDecl::Create(SemaRef.Context, DC, |
2162 | 7.88k | Function->getLocation(), |
2163 | 7.88k | Function->getDeclName(), |
2164 | 7.88k | TemplateParams, Function); |
2165 | 7.88k | Function->setDescribedFunctionTemplate(FunctionTemplate); |
2166 | | |
2167 | 7.88k | FunctionTemplate->setLexicalDeclContext(LexicalDC); |
2168 | | |
2169 | 7.88k | if (isFriend && D->isThisDeclarationADefinition()7.88k ) { |
2170 | 63 | FunctionTemplate->setInstantiatedFromMemberTemplate( |
2171 | 63 | D->getDescribedFunctionTemplate()); |
2172 | 63 | } |
2173 | 168k | } else if (FunctionTemplate) { |
2174 | | // Record this function template specialization. |
2175 | 158k | ArrayRef<TemplateArgument> Innermost = TemplateArgs.getInnermost(); |
2176 | 158k | Function->setFunctionTemplateSpecialization(FunctionTemplate, |
2177 | 158k | TemplateArgumentList::CreateCopy(SemaRef.Context, |
2178 | 158k | Innermost), |
2179 | 158k | /*InsertPos=*/nullptr); |
2180 | 158k | } else if (9.53k isFriend9.53k && D->isThisDeclarationADefinition()9.42k ) { |
2181 | | // Do not connect the friend to the template unless it's actually a |
2182 | | // definition. We don't want non-template functions to be marked as being |
2183 | | // template instantiations. |
2184 | 5.26k | Function->setInstantiationOfMemberFunction(D, TSK_ImplicitInstantiation); |
2185 | 5.26k | } |
2186 | | |
2187 | 176k | if (isFriend) { |
2188 | 17.3k | Function->setObjectOfFriendDecl(); |
2189 | 17.3k | if (FunctionTemplateDecl *FT = Function->getDescribedFunctionTemplate()) |
2190 | 7.88k | FT->setObjectOfFriendDecl(); |
2191 | 17.3k | } |
2192 | | |
2193 | 176k | if (InitFunctionInstantiation(Function, D)) |
2194 | 0 | Function->setInvalidDecl(); |
2195 | | |
2196 | 176k | bool IsExplicitSpecialization = false; |
2197 | | |
2198 | 176k | LookupResult Previous( |
2199 | 176k | SemaRef, Function->getDeclName(), SourceLocation(), |
2200 | 176k | D->isLocalExternDecl() ? Sema::LookupRedeclarationWithLinkage108 |
2201 | 176k | : Sema::LookupOrdinaryName176k , |
2202 | 176k | D->isLocalExternDecl() ? Sema::ForExternalRedeclaration108 |
2203 | 176k | : SemaRef.forRedeclarationInCurContext()176k ); |
2204 | | |
2205 | 176k | if (DependentFunctionTemplateSpecializationInfo *Info |
2206 | 176k | = D->getDependentSpecializationInfo()) { |
2207 | 3.88k | assert(isFriend && "non-friend has dependent specialization info?"); |
2208 | | |
2209 | | // Instantiate the explicit template arguments. |
2210 | 0 | TemplateArgumentListInfo ExplicitArgs(Info->getLAngleLoc(), |
2211 | 3.88k | Info->getRAngleLoc()); |
2212 | 3.88k | if (SemaRef.SubstTemplateArguments(Info->arguments(), TemplateArgs, |
2213 | 3.88k | ExplicitArgs)) |
2214 | 0 | return nullptr; |
2215 | | |
2216 | | // Map the candidate templates to their instantiations. |
2217 | 34.7k | for (unsigned I = 0, E = Info->getNumTemplates(); 3.88k I != E; ++I30.8k ) { |
2218 | 30.8k | Decl *Temp = SemaRef.FindInstantiatedDecl(D->getLocation(), |
2219 | 30.8k | Info->getTemplate(I), |
2220 | 30.8k | TemplateArgs); |
2221 | 30.8k | if (!Temp) return nullptr0 ; |
2222 | | |
2223 | 30.8k | Previous.addDecl(cast<FunctionTemplateDecl>(Temp)); |
2224 | 30.8k | } |
2225 | | |
2226 | 3.88k | if (SemaRef.CheckFunctionTemplateSpecialization(Function, |
2227 | 3.88k | &ExplicitArgs, |
2228 | 3.88k | Previous)) |
2229 | 0 | Function->setInvalidDecl(); |
2230 | | |
2231 | 3.88k | IsExplicitSpecialization = true; |
2232 | 172k | } else if (const ASTTemplateArgumentListInfo *Info = |
2233 | 172k | D->getTemplateSpecializationArgsAsWritten()) { |
2234 | | // The name of this function was written as a template-id. |
2235 | 1 | SemaRef.LookupQualifiedName(Previous, DC); |
2236 | | |
2237 | | // Instantiate the explicit template arguments. |
2238 | 1 | TemplateArgumentListInfo ExplicitArgs(Info->getLAngleLoc(), |
2239 | 1 | Info->getRAngleLoc()); |
2240 | 1 | if (SemaRef.SubstTemplateArguments(Info->arguments(), TemplateArgs, |
2241 | 1 | ExplicitArgs)) |
2242 | 0 | return nullptr; |
2243 | | |
2244 | 1 | if (SemaRef.CheckFunctionTemplateSpecialization(Function, |
2245 | 1 | &ExplicitArgs, |
2246 | 1 | Previous)) |
2247 | 0 | Function->setInvalidDecl(); |
2248 | | |
2249 | 1 | IsExplicitSpecialization = true; |
2250 | 172k | } else if (TemplateParams || !FunctionTemplate164k ) { |
2251 | | // Look only into the namespace where the friend would be declared to |
2252 | | // find a previous declaration. This is the innermost enclosing namespace, |
2253 | | // as described in ActOnFriendFunctionDecl. |
2254 | 13.5k | SemaRef.LookupQualifiedName(Previous, DC->getRedeclContext()); |
2255 | | |
2256 | | // In C++, the previous declaration we find might be a tag type |
2257 | | // (class or enum). In this case, the new declaration will hide the |
2258 | | // tag type. Note that this does does not apply if we're declaring a |
2259 | | // typedef (C++ [dcl.typedef]p4). |
2260 | 13.5k | if (Previous.isSingleTagDecl()) |
2261 | 0 | Previous.clear(); |
2262 | | |
2263 | | // Filter out previous declarations that don't match the scope. The only |
2264 | | // effect this has is to remove declarations found in inline namespaces |
2265 | | // for friend declarations with unqualified names. |
2266 | 13.5k | SemaRef.FilterLookupForScope(Previous, DC, /*Scope*/ nullptr, |
2267 | 13.5k | /*ConsiderLinkage*/ true, |
2268 | 13.5k | QualifierLoc.hasQualifier()); |
2269 | 13.5k | } |
2270 | | |
2271 | 176k | SemaRef.CheckFunctionDeclaration(/*Scope*/ nullptr, Function, Previous, |
2272 | 176k | IsExplicitSpecialization, |
2273 | 176k | Function->isThisDeclarationADefinition()); |
2274 | | |
2275 | | // Check the template parameter list against the previous declaration. The |
2276 | | // goal here is to pick up default arguments added since the friend was |
2277 | | // declared; we know the template parameter lists match, since otherwise |
2278 | | // we would not have picked this template as the previous declaration. |
2279 | 176k | if (isFriend && TemplateParams17.3k && FunctionTemplate->getPreviousDecl()7.88k ) { |
2280 | 7.49k | SemaRef.CheckTemplateParameterList( |
2281 | 7.49k | TemplateParams, |
2282 | 7.49k | FunctionTemplate->getPreviousDecl()->getTemplateParameters(), |
2283 | 7.49k | Function->isThisDeclarationADefinition() |
2284 | 7.49k | ? Sema::TPC_FriendFunctionTemplateDefinition0 |
2285 | 7.49k | : Sema::TPC_FriendFunctionTemplate); |
2286 | 7.49k | } |
2287 | | |
2288 | | // If we're introducing a friend definition after the first use, trigger |
2289 | | // instantiation. |
2290 | | // FIXME: If this is a friend function template definition, we should check |
2291 | | // to see if any specializations have been used. |
2292 | 176k | if (isFriend && D->isThisDeclarationADefinition()17.3k && Function->isUsed(false)5.33k ) { |
2293 | 7 | if (MemberSpecializationInfo *MSInfo = |
2294 | 7 | Function->getMemberSpecializationInfo()) { |
2295 | 7 | if (MSInfo->getPointOfInstantiation().isInvalid()) { |
2296 | 7 | SourceLocation Loc = D->getLocation(); // FIXME |
2297 | 7 | MSInfo->setPointOfInstantiation(Loc); |
2298 | 7 | SemaRef.PendingLocalImplicitInstantiations.push_back( |
2299 | 7 | std::make_pair(Function, Loc)); |
2300 | 7 | } |
2301 | 7 | } |
2302 | 7 | } |
2303 | | |
2304 | 176k | if (D->isExplicitlyDefaulted()) { |
2305 | 84 | if (SubstDefaultedFunction(Function, D)) |
2306 | 0 | return nullptr; |
2307 | 84 | } |
2308 | 176k | if (D->isDeleted()) |
2309 | 1.56k | SemaRef.SetDeclDeleted(Function, D->getLocation()); |
2310 | | |
2311 | 176k | NamedDecl *PrincipalDecl = |
2312 | 176k | (TemplateParams ? cast<NamedDecl>(FunctionTemplate)7.88k : Function168k ); |
2313 | | |
2314 | | // If this declaration lives in a different context from its lexical context, |
2315 | | // add it to the corresponding lookup table. |
2316 | 176k | if (isFriend || |
2317 | 176k | (158k Function->isLocalExternDecl()158k && !Function->getPreviousDecl()108 )) |
2318 | 17.4k | DC->makeDeclVisibleInContext(PrincipalDecl); |
2319 | | |
2320 | 176k | if (Function->isOverloadedOperator() && !DC->isRecord()21.3k && |
2321 | 176k | PrincipalDecl->isInIdentifierNamespace(Decl::IDNS_Ordinary)21.3k ) |
2322 | 15.5k | PrincipalDecl->setNonMemberOperator(); |
2323 | | |
2324 | 176k | return Function; |
2325 | 176k | } |
2326 | | |
2327 | | Decl *TemplateDeclInstantiator::VisitCXXMethodDecl( |
2328 | | CXXMethodDecl *D, TemplateParameterList *TemplateParams, |
2329 | | Optional<const ASTTemplateArgumentListInfo *> ClassScopeSpecializationArgs, |
2330 | 1.23M | RewriteKind FunctionRewriteKind) { |
2331 | 1.23M | FunctionTemplateDecl *FunctionTemplate = D->getDescribedFunctionTemplate(); |
2332 | 1.23M | if (FunctionTemplate && !TemplateParams503k ) { |
2333 | | // We are creating a function template specialization from a function |
2334 | | // template. Check whether there is already a function template |
2335 | | // specialization for this particular set of template arguments. |
2336 | 276k | ArrayRef<TemplateArgument> Innermost = TemplateArgs.getInnermost(); |
2337 | | |
2338 | 276k | void *InsertPos = nullptr; |
2339 | 276k | FunctionDecl *SpecFunc |
2340 | 276k | = FunctionTemplate->findSpecialization(Innermost, InsertPos); |
2341 | | |
2342 | | // If we already have a function template specialization, return it. |
2343 | 276k | if (SpecFunc) |
2344 | 114k | return SpecFunc; |
2345 | 276k | } |
2346 | | |
2347 | 1.12M | bool isFriend; |
2348 | 1.12M | if (FunctionTemplate) |
2349 | 388k | isFriend = (FunctionTemplate->getFriendObjectKind() != Decl::FOK_None); |
2350 | 734k | else |
2351 | 734k | isFriend = (D->getFriendObjectKind() != Decl::FOK_None); |
2352 | | |
2353 | 1.12M | bool MergeWithParentScope = (TemplateParams != nullptr) || |
2354 | 1.12M | !(896k isa<Decl>(Owner)896k && |
2355 | 896k | cast<Decl>(Owner)->isDefinedOutsideFunctionOrMethod()); |
2356 | 1.12M | LocalInstantiationScope Scope(SemaRef, MergeWithParentScope); |
2357 | | |
2358 | | // Instantiate enclosing template arguments for friends. |
2359 | 1.12M | SmallVector<TemplateParameterList *, 4> TempParamLists; |
2360 | 1.12M | unsigned NumTempParamLists = 0; |
2361 | 1.12M | if (isFriend && (NumTempParamLists = D->getNumTemplateParameterLists())60 ) { |
2362 | 3 | TempParamLists.resize(NumTempParamLists); |
2363 | 10 | for (unsigned I = 0; I != NumTempParamLists; ++I7 ) { |
2364 | 7 | TemplateParameterList *TempParams = D->getTemplateParameterList(I); |
2365 | 7 | TemplateParameterList *InstParams = SubstTemplateParams(TempParams); |
2366 | 7 | if (!InstParams) |
2367 | 0 | return nullptr; |
2368 | 7 | TempParamLists[I] = InstParams; |
2369 | 7 | } |
2370 | 3 | } |
2371 | | |
2372 | 1.12M | ExplicitSpecifier InstantiatedExplicitSpecifier = |
2373 | 1.12M | instantiateExplicitSpecifier(SemaRef, TemplateArgs, |
2374 | 1.12M | ExplicitSpecifier::getFromDecl(D), D); |
2375 | 1.12M | if (InstantiatedExplicitSpecifier.isInvalid()) |
2376 | 134 | return nullptr; |
2377 | | |
2378 | | // Implicit destructors/constructors created for local classes in |
2379 | | // DeclareImplicit* (see SemaDeclCXX.cpp) might not have an associated TSI. |
2380 | | // Unfortunately there isn't enough context in those functions to |
2381 | | // conditionally populate the TSI without breaking non-template related use |
2382 | | // cases. Populate TSIs prior to calling SubstFunctionType to make sure we get |
2383 | | // a proper transformation. |
2384 | 1.12M | if (cast<CXXRecordDecl>(D->getParent())->isLambda() && |
2385 | 1.12M | !D->getTypeSourceInfo()3.94k && |
2386 | 1.12M | isa<CXXConstructorDecl, CXXDestructorDecl>(D)0 ) { |
2387 | 0 | TypeSourceInfo *TSI = |
2388 | 0 | SemaRef.Context.getTrivialTypeSourceInfo(D->getType()); |
2389 | 0 | D->setTypeSourceInfo(TSI); |
2390 | 0 | } |
2391 | | |
2392 | 1.12M | SmallVector<ParmVarDecl *, 4> Params; |
2393 | 1.12M | TypeSourceInfo *TInfo = SubstFunctionType(D, Params); |
2394 | 1.12M | if (!TInfo) |
2395 | 29.1k | return nullptr; |
2396 | 1.09M | QualType T = adjustFunctionTypeForInstantiation(SemaRef.Context, D, TInfo); |
2397 | | |
2398 | 1.09M | if (TemplateParams && TemplateParams->size()227k ) { |
2399 | 227k | auto *LastParam = |
2400 | 227k | dyn_cast<TemplateTypeParmDecl>(TemplateParams->asArray().back()); |
2401 | 227k | if (LastParam && LastParam->isImplicit()172k && |
2402 | 227k | LastParam->hasTypeConstraint()39 ) { |
2403 | | // In abbreviated templates, the type-constraints of invented template |
2404 | | // type parameters are instantiated with the function type, invalidating |
2405 | | // the TemplateParameterList which relied on the template type parameter |
2406 | | // not having a type constraint. Recreate the TemplateParameterList with |
2407 | | // the updated parameter list. |
2408 | 5 | TemplateParams = TemplateParameterList::Create( |
2409 | 5 | SemaRef.Context, TemplateParams->getTemplateLoc(), |
2410 | 5 | TemplateParams->getLAngleLoc(), TemplateParams->asArray(), |
2411 | 5 | TemplateParams->getRAngleLoc(), TemplateParams->getRequiresClause()); |
2412 | 5 | } |
2413 | 227k | } |
2414 | | |
2415 | 1.09M | NestedNameSpecifierLoc QualifierLoc = D->getQualifierLoc(); |
2416 | 1.09M | if (QualifierLoc) { |
2417 | 348 | QualifierLoc = SemaRef.SubstNestedNameSpecifierLoc(QualifierLoc, |
2418 | 348 | TemplateArgs); |
2419 | 348 | if (!QualifierLoc) |
2420 | 1 | return nullptr; |
2421 | 348 | } |
2422 | | |
2423 | | // FIXME: Concepts: Do not substitute into constraint expressions |
2424 | 1.09M | Expr *TrailingRequiresClause = D->getTrailingRequiresClause(); |
2425 | 1.09M | if (TrailingRequiresClause) { |
2426 | 148 | EnterExpressionEvaluationContext ConstantEvaluated( |
2427 | 148 | SemaRef, Sema::ExpressionEvaluationContext::Unevaluated); |
2428 | 148 | auto *ThisContext = dyn_cast_or_null<CXXRecordDecl>(Owner); |
2429 | 148 | Sema::CXXThisScopeRAII ThisScope(SemaRef, ThisContext, |
2430 | 148 | D->getMethodQualifiers(), ThisContext); |
2431 | 148 | ExprResult SubstRC = SemaRef.SubstExpr(TrailingRequiresClause, |
2432 | 148 | TemplateArgs); |
2433 | 148 | if (SubstRC.isInvalid()) |
2434 | 0 | return nullptr; |
2435 | 148 | TrailingRequiresClause = SubstRC.get(); |
2436 | 148 | if (!SemaRef.CheckConstraintExpression(TrailingRequiresClause)) |
2437 | 0 | return nullptr; |
2438 | 148 | } |
2439 | | |
2440 | 1.09M | DeclContext *DC = Owner; |
2441 | 1.09M | if (isFriend) { |
2442 | 59 | if (QualifierLoc) { |
2443 | 59 | CXXScopeSpec SS; |
2444 | 59 | SS.Adopt(QualifierLoc); |
2445 | 59 | DC = SemaRef.computeDeclContext(SS); |
2446 | | |
2447 | 59 | if (DC && SemaRef.RequireCompleteDeclContext(SS, DC)57 ) |
2448 | 0 | return nullptr; |
2449 | 59 | } else { |
2450 | 0 | DC = SemaRef.FindInstantiatedContext(D->getLocation(), |
2451 | 0 | D->getDeclContext(), |
2452 | 0 | TemplateArgs); |
2453 | 0 | } |
2454 | 59 | if (!DC) return nullptr2 ; |
2455 | 59 | } |
2456 | | |
2457 | 1.09M | DeclarationNameInfo NameInfo |
2458 | 1.09M | = SemaRef.SubstDeclarationNameInfo(D->getNameInfo(), TemplateArgs); |
2459 | | |
2460 | 1.09M | if (FunctionRewriteKind != RewriteKind::None) |
2461 | 87 | adjustForRewrite(FunctionRewriteKind, D, T, TInfo, NameInfo); |
2462 | | |
2463 | | // Build the instantiated method declaration. |
2464 | 1.09M | CXXRecordDecl *Record = cast<CXXRecordDecl>(DC); |
2465 | 1.09M | CXXMethodDecl *Method = nullptr; |
2466 | | |
2467 | 1.09M | SourceLocation StartLoc = D->getInnerLocStart(); |
2468 | 1.09M | if (CXXConstructorDecl *Constructor = dyn_cast<CXXConstructorDecl>(D)) { |
2469 | 256k | Method = CXXConstructorDecl::Create( |
2470 | 256k | SemaRef.Context, Record, StartLoc, NameInfo, T, TInfo, |
2471 | 256k | InstantiatedExplicitSpecifier, Constructor->UsesFPIntrin(), |
2472 | 256k | Constructor->isInlineSpecified(), false, |
2473 | 256k | Constructor->getConstexprKind(), InheritedConstructor(), |
2474 | 256k | TrailingRequiresClause); |
2475 | 256k | Method->setRangeEnd(Constructor->getEndLoc()); |
2476 | 837k | } else if (CXXDestructorDecl *Destructor = dyn_cast<CXXDestructorDecl>(D)) { |
2477 | 13.3k | Method = CXXDestructorDecl::Create( |
2478 | 13.3k | SemaRef.Context, Record, StartLoc, NameInfo, T, TInfo, |
2479 | 13.3k | Destructor->UsesFPIntrin(), Destructor->isInlineSpecified(), false, |
2480 | 13.3k | Destructor->getConstexprKind(), TrailingRequiresClause); |
2481 | 13.3k | Method->setIneligibleOrNotSelected(true); |
2482 | 13.3k | Method->setRangeEnd(Destructor->getEndLoc()); |
2483 | 13.3k | Method->setDeclName(SemaRef.Context.DeclarationNames.getCXXDestructorName( |
2484 | 13.3k | SemaRef.Context.getCanonicalType( |
2485 | 13.3k | SemaRef.Context.getTypeDeclType(Record)))); |
2486 | 824k | } else if (CXXConversionDecl *Conversion = dyn_cast<CXXConversionDecl>(D)) { |
2487 | 13.0k | Method = CXXConversionDecl::Create( |
2488 | 13.0k | SemaRef.Context, Record, StartLoc, NameInfo, T, TInfo, |
2489 | 13.0k | Conversion->UsesFPIntrin(), Conversion->isInlineSpecified(), |
2490 | 13.0k | InstantiatedExplicitSpecifier, Conversion->getConstexprKind(), |
2491 | 13.0k | Conversion->getEndLoc(), TrailingRequiresClause); |
2492 | 811k | } else { |
2493 | 811k | StorageClass SC = D->isStatic() ? SC_Static226k : SC_None585k ; |
2494 | 811k | Method = CXXMethodDecl::Create( |
2495 | 811k | SemaRef.Context, Record, StartLoc, NameInfo, T, TInfo, SC, |
2496 | 811k | D->UsesFPIntrin(), D->isInlineSpecified(), D->getConstexprKind(), |
2497 | 811k | D->getEndLoc(), TrailingRequiresClause); |
2498 | 811k | } |
2499 | | |
2500 | 1.09M | if (D->isInlined()) |
2501 | 794k | Method->setImplicitlyInline(); |
2502 | | |
2503 | 1.09M | if (QualifierLoc) |
2504 | 345 | Method->setQualifierInfo(QualifierLoc); |
2505 | | |
2506 | 1.09M | if (TemplateParams) { |
2507 | | // Our resulting instantiation is actually a function template, since we |
2508 | | // are substituting only the outer template parameters. For example, given |
2509 | | // |
2510 | | // template<typename T> |
2511 | | // struct X { |
2512 | | // template<typename U> void f(T, U); |
2513 | | // }; |
2514 | | // |
2515 | | // X<int> x; |
2516 | | // |
2517 | | // We are instantiating the member template "f" within X<int>, which means |
2518 | | // substituting int for T, but leaving "f" as a member function template. |
2519 | | // Build the function template itself. |
2520 | 227k | FunctionTemplate = FunctionTemplateDecl::Create(SemaRef.Context, Record, |
2521 | 227k | Method->getLocation(), |
2522 | 227k | Method->getDeclName(), |
2523 | 227k | TemplateParams, Method); |
2524 | 227k | if (isFriend) { |
2525 | 14 | FunctionTemplate->setLexicalDeclContext(Owner); |
2526 | 14 | FunctionTemplate->setObjectOfFriendDecl(); |
2527 | 227k | } else if (D->isOutOfLine()) |
2528 | 0 | FunctionTemplate->setLexicalDeclContext(D->getLexicalDeclContext()); |
2529 | 227k | Method->setDescribedFunctionTemplate(FunctionTemplate); |
2530 | 867k | } else if (FunctionTemplate) { |
2531 | | // Record this function template specialization. |
2532 | 132k | ArrayRef<TemplateArgument> Innermost = TemplateArgs.getInnermost(); |
2533 | 132k | Method->setFunctionTemplateSpecialization(FunctionTemplate, |
2534 | 132k | TemplateArgumentList::CreateCopy(SemaRef.Context, |
2535 | 132k | Innermost), |
2536 | 132k | /*InsertPos=*/nullptr); |
2537 | 734k | } else if (!isFriend) { |
2538 | | // Record that this is an instantiation of a member function. |
2539 | 734k | Method->setInstantiationOfMemberFunction(D, TSK_ImplicitInstantiation); |
2540 | 734k | } |
2541 | | |
2542 | | // If we are instantiating a member function defined |
2543 | | // out-of-line, the instantiation will have the same lexical |
2544 | | // context (which will be a namespace scope) as the template. |
2545 | 1.09M | if (isFriend) { |
2546 | 57 | if (NumTempParamLists) |
2547 | 0 | Method->setTemplateParameterListsInfo( |
2548 | 0 | SemaRef.Context, |
2549 | 0 | llvm::makeArrayRef(TempParamLists.data(), NumTempParamLists)); |
2550 | | |
2551 | 57 | Method->setLexicalDeclContext(Owner); |
2552 | 57 | Method->setObjectOfFriendDecl(); |
2553 | 1.09M | } else if (D->isOutOfLine()) |
2554 | 288 | Method->setLexicalDeclContext(D->getLexicalDeclContext()); |
2555 | | |
2556 | | // Attach the parameters |
2557 | 2.31M | for (unsigned P = 0; P < Params.size(); ++P1.21M ) |
2558 | 1.21M | Params[P]->setOwningFunction(Method); |
2559 | 1.09M | Method->setParams(Params); |
2560 | | |
2561 | 1.09M | if (InitMethodInstantiation(Method, D)) |
2562 | 0 | Method->setInvalidDecl(); |
2563 | | |
2564 | 1.09M | LookupResult Previous(SemaRef, NameInfo, Sema::LookupOrdinaryName, |
2565 | 1.09M | Sema::ForExternalRedeclaration); |
2566 | | |
2567 | 1.09M | bool IsExplicitSpecialization = false; |
2568 | | |
2569 | | // If the name of this function was written as a template-id, instantiate |
2570 | | // the explicit template arguments. |
2571 | 1.09M | if (DependentFunctionTemplateSpecializationInfo *Info |
2572 | 1.09M | = D->getDependentSpecializationInfo()) { |
2573 | 8 | assert(isFriend && "non-friend has dependent specialization info?"); |
2574 | | |
2575 | | // Instantiate the explicit template arguments. |
2576 | 0 | TemplateArgumentListInfo ExplicitArgs(Info->getLAngleLoc(), |
2577 | 8 | Info->getRAngleLoc()); |
2578 | 8 | if (SemaRef.SubstTemplateArguments(Info->arguments(), TemplateArgs, |
2579 | 8 | ExplicitArgs)) |
2580 | 0 | return nullptr; |
2581 | | |
2582 | | // Map the candidate templates to their instantiations. |
2583 | 16 | for (unsigned I = 0, E = Info->getNumTemplates(); 8 I != E; ++I8 ) { |
2584 | 8 | Decl *Temp = SemaRef.FindInstantiatedDecl(D->getLocation(), |
2585 | 8 | Info->getTemplate(I), |
2586 | 8 | TemplateArgs); |
2587 | 8 | if (!Temp) return nullptr0 ; |
2588 | | |
2589 | 8 | Previous.addDecl(cast<FunctionTemplateDecl>(Temp)); |
2590 | 8 | } |
2591 | | |
2592 | 8 | if (SemaRef.CheckFunctionTemplateSpecialization(Method, |
2593 | 8 | &ExplicitArgs, |
2594 | 8 | Previous)) |
2595 | 0 | Method->setInvalidDecl(); |
2596 | | |
2597 | 8 | IsExplicitSpecialization = true; |
2598 | 1.09M | } else if (const ASTTemplateArgumentListInfo *Info = |
2599 | 1.09M | ClassScopeSpecializationArgs.value_or( |
2600 | 1.09M | D->getTemplateSpecializationArgsAsWritten())) { |
2601 | 80 | SemaRef.LookupQualifiedName(Previous, DC); |
2602 | | |
2603 | 80 | TemplateArgumentListInfo ExplicitArgs(Info->getLAngleLoc(), |
2604 | 80 | Info->getRAngleLoc()); |
2605 | 80 | if (SemaRef.SubstTemplateArguments(Info->arguments(), TemplateArgs, |
2606 | 80 | ExplicitArgs)) |
2607 | 0 | return nullptr; |
2608 | | |
2609 | 80 | if (SemaRef.CheckFunctionTemplateSpecialization(Method, |
2610 | 80 | &ExplicitArgs, |
2611 | 80 | Previous)) |
2612 | 0 | Method->setInvalidDecl(); |
2613 | | |
2614 | 80 | IsExplicitSpecialization = true; |
2615 | 1.09M | } else if (ClassScopeSpecializationArgs) { |
2616 | | // Class-scope explicit specialization written without explicit template |
2617 | | // arguments. |
2618 | 11 | SemaRef.LookupQualifiedName(Previous, DC); |
2619 | 11 | if (SemaRef.CheckFunctionTemplateSpecialization(Method, nullptr, Previous)) |
2620 | 0 | Method->setInvalidDecl(); |
2621 | | |
2622 | 11 | IsExplicitSpecialization = true; |
2623 | 1.09M | } else if (!FunctionTemplate || TemplateParams359k || isFriend132k ) { |
2624 | 961k | SemaRef.LookupQualifiedName(Previous, Record); |
2625 | | |
2626 | | // In C++, the previous declaration we find might be a tag type |
2627 | | // (class or enum). In this case, the new declaration will hide the |
2628 | | // tag type. Note that this does does not apply if we're declaring a |
2629 | | // typedef (C++ [dcl.typedef]p4). |
2630 | 961k | if (Previous.isSingleTagDecl()) |
2631 | 0 | Previous.clear(); |
2632 | 961k | } |
2633 | | |
2634 | 1.09M | SemaRef.CheckFunctionDeclaration(nullptr, Method, Previous, |
2635 | 1.09M | IsExplicitSpecialization, |
2636 | 1.09M | Method->isThisDeclarationADefinition()); |
2637 | | |
2638 | 1.09M | if (D->isPure()) |
2639 | 176 | SemaRef.CheckPureMethod(Method, SourceRange()); |
2640 | | |
2641 | | // Propagate access. For a non-friend declaration, the access is |
2642 | | // whatever we're propagating from. For a friend, it should be the |
2643 | | // previous declaration we just found. |
2644 | 1.09M | if (isFriend && Method->getPreviousDecl()57 ) |
2645 | 55 | Method->setAccess(Method->getPreviousDecl()->getAccess()); |
2646 | 1.09M | else |
2647 | 1.09M | Method->setAccess(D->getAccess()); |
2648 | 1.09M | if (FunctionTemplate) |
2649 | 359k | FunctionTemplate->setAccess(Method->getAccess()); |
2650 | | |
2651 | 1.09M | SemaRef.CheckOverrideControl(Method); |
2652 | | |
2653 | | // If a function is defined as defaulted or deleted, mark it as such now. |
2654 | 1.09M | if (D->isExplicitlyDefaulted()) { |
2655 | 20.4k | if (SubstDefaultedFunction(Method, D)) |
2656 | 0 | return nullptr; |
2657 | 20.4k | } |
2658 | 1.09M | if (D->isDeletedAsWritten()) |
2659 | 6.28k | SemaRef.SetDeclDeleted(Method, Method->getLocation()); |
2660 | | |
2661 | | // If this is an explicit specialization, mark the implicitly-instantiated |
2662 | | // template specialization as being an explicit specialization too. |
2663 | | // FIXME: Is this necessary? |
2664 | 1.09M | if (IsExplicitSpecialization && !isFriend99 ) |
2665 | 90 | SemaRef.CompleteMemberSpecialization(Method, Previous); |
2666 | | |
2667 | | // If there's a function template, let our caller handle it. |
2668 | 1.09M | if (FunctionTemplate) { |
2669 | | // do nothing |
2670 | | |
2671 | | // Don't hide a (potentially) valid declaration with an invalid one. |
2672 | 734k | } else if (Method->isInvalidDecl() && !Previous.empty()5 ) { |
2673 | | // do nothing |
2674 | | |
2675 | | // Otherwise, check access to friends and make them visible. |
2676 | 734k | } else if (isFriend) { |
2677 | | // We only need to re-check access for methods which we didn't |
2678 | | // manage to match during parsing. |
2679 | 42 | if (!D->getPreviousDecl()) |
2680 | 37 | SemaRef.CheckFriendAccess(Method); |
2681 | | |
2682 | 42 | Record->makeDeclVisibleInContext(Method); |
2683 | | |
2684 | | // Otherwise, add the declaration. We don't need to do this for |
2685 | | // class-scope specializations because we'll have matched them with |
2686 | | // the appropriate template. |
2687 | 734k | } else { |
2688 | 734k | Owner->addDecl(Method); |
2689 | 734k | } |
2690 | | |
2691 | | // PR17480: Honor the used attribute to instantiate member function |
2692 | | // definitions |
2693 | 1.09M | if (Method->hasAttr<UsedAttr>()) { |
2694 | 5 | if (const auto *A = dyn_cast<CXXRecordDecl>(Owner)) { |
2695 | 5 | SourceLocation Loc; |
2696 | 5 | if (const MemberSpecializationInfo *MSInfo = |
2697 | 5 | A->getMemberSpecializationInfo()) |
2698 | 0 | Loc = MSInfo->getPointOfInstantiation(); |
2699 | 5 | else if (const auto *Spec = dyn_cast<ClassTemplateSpecializationDecl>(A)) |
2700 | 5 | Loc = Spec->getPointOfInstantiation(); |
2701 | 5 | SemaRef.MarkFunctionReferenced(Loc, Method); |
2702 | 5 | } |
2703 | 5 | } |
2704 | | |
2705 | 1.09M | return Method; |
2706 | 1.09M | } |
2707 | | |
2708 | 231k | Decl *TemplateDeclInstantiator::VisitCXXConstructorDecl(CXXConstructorDecl *D) { |
2709 | 231k | return VisitCXXMethodDecl(D); |
2710 | 231k | } |
2711 | | |
2712 | 13.3k | Decl *TemplateDeclInstantiator::VisitCXXDestructorDecl(CXXDestructorDecl *D) { |
2713 | 13.3k | return VisitCXXMethodDecl(D); |
2714 | 13.3k | } |
2715 | | |
2716 | 15.1k | Decl *TemplateDeclInstantiator::VisitCXXConversionDecl(CXXConversionDecl *D) { |
2717 | 15.1k | return VisitCXXMethodDecl(D); |
2718 | 15.1k | } |
2719 | | |
2720 | 0 | Decl *TemplateDeclInstantiator::VisitParmVarDecl(ParmVarDecl *D) { |
2721 | 0 | return SemaRef.SubstParmVarDecl(D, TemplateArgs, /*indexAdjustment*/ 0, None, |
2722 | 0 | /*ExpectParameterPack=*/ false); |
2723 | 0 | } |
2724 | | |
2725 | | Decl *TemplateDeclInstantiator::VisitTemplateTypeParmDecl( |
2726 | 474k | TemplateTypeParmDecl *D) { |
2727 | 474k | assert(D->getTypeForDecl()->isTemplateTypeParmType()); |
2728 | | |
2729 | 0 | Optional<unsigned> NumExpanded; |
2730 | | |
2731 | 474k | if (const TypeConstraint *TC = D->getTypeConstraint()) { |
2732 | 2.11k | if (D->isPackExpansion() && !D->isExpandedParameterPack()3 ) { |
2733 | 3 | assert(TC->getTemplateArgsAsWritten() && |
2734 | 3 | "type parameter can only be an expansion when explicit arguments " |
2735 | 3 | "are specified"); |
2736 | | // The template type parameter pack's type is a pack expansion of types. |
2737 | | // Determine whether we need to expand this parameter pack into separate |
2738 | | // types. |
2739 | 0 | SmallVector<UnexpandedParameterPack, 2> Unexpanded; |
2740 | 3 | for (auto &ArgLoc : TC->getTemplateArgsAsWritten()->arguments()) |
2741 | 5 | SemaRef.collectUnexpandedParameterPacks(ArgLoc, Unexpanded); |
2742 | | |
2743 | | // Determine whether the set of unexpanded parameter packs can and should |
2744 | | // be expanded. |
2745 | 3 | bool Expand = true; |
2746 | 3 | bool RetainExpansion = false; |
2747 | 3 | if (SemaRef.CheckParameterPacksForExpansion( |
2748 | 3 | cast<CXXFoldExpr>(TC->getImmediatelyDeclaredConstraint()) |
2749 | 3 | ->getEllipsisLoc(), |
2750 | 3 | SourceRange(TC->getConceptNameLoc(), |
2751 | 3 | TC->hasExplicitTemplateArgs() ? |
2752 | 3 | TC->getTemplateArgsAsWritten()->getRAngleLoc() : |
2753 | 3 | TC->getConceptNameInfo().getEndLoc()0 ), |
2754 | 3 | Unexpanded, TemplateArgs, Expand, RetainExpansion, NumExpanded)) |
2755 | 0 | return nullptr; |
2756 | 3 | } |
2757 | 2.11k | } |
2758 | | |
2759 | 474k | TemplateTypeParmDecl *Inst = TemplateTypeParmDecl::Create( |
2760 | 474k | SemaRef.Context, Owner, D->getBeginLoc(), D->getLocation(), |
2761 | 474k | D->getDepth() - TemplateArgs.getNumSubstitutedLevels(), D->getIndex(), |
2762 | 474k | D->getIdentifier(), D->wasDeclaredWithTypename(), D->isParameterPack(), |
2763 | 474k | D->hasTypeConstraint(), NumExpanded); |
2764 | | |
2765 | 474k | Inst->setAccess(AS_public); |
2766 | 474k | Inst->setImplicit(D->isImplicit()); |
2767 | 474k | if (auto *TC = D->getTypeConstraint()) { |
2768 | 2.11k | if (!D->isImplicit()) { |
2769 | | // Invented template parameter type constraints will be instantiated with |
2770 | | // the corresponding auto-typed parameter as it might reference other |
2771 | | // parameters. |
2772 | | |
2773 | | // TODO: Concepts: do not instantiate the constraint (delayed constraint |
2774 | | // substitution) |
2775 | 2.10k | if (SemaRef.SubstTypeConstraint(Inst, TC, TemplateArgs)) |
2776 | 4 | return nullptr; |
2777 | 2.10k | } |
2778 | 2.11k | } |
2779 | 474k | if (D->hasDefaultArgument() && !D->defaultArgumentWasInherited()116k ) { |
2780 | 116k | TypeSourceInfo *InstantiatedDefaultArg = |
2781 | 116k | SemaRef.SubstType(D->getDefaultArgumentInfo(), TemplateArgs, |
2782 | 116k | D->getDefaultArgumentLoc(), D->getDeclName()); |
2783 | 116k | if (InstantiatedDefaultArg) |
2784 | 116k | Inst->setDefaultArgument(InstantiatedDefaultArg); |
2785 | 116k | } |
2786 | | |
2787 | | // Introduce this template parameter's instantiation into the instantiation |
2788 | | // scope. |
2789 | 474k | SemaRef.CurrentInstantiationScope->InstantiatedLocal(D, Inst); |
2790 | | |
2791 | 474k | return Inst; |
2792 | 474k | } |
2793 | | |
2794 | | Decl *TemplateDeclInstantiator::VisitNonTypeTemplateParmDecl( |
2795 | 147k | NonTypeTemplateParmDecl *D) { |
2796 | | // Substitute into the type of the non-type template parameter. |
2797 | 147k | TypeLoc TL = D->getTypeSourceInfo()->getTypeLoc(); |
2798 | 147k | SmallVector<TypeSourceInfo *, 4> ExpandedParameterPackTypesAsWritten; |
2799 | 147k | SmallVector<QualType, 4> ExpandedParameterPackTypes; |
2800 | 147k | bool IsExpandedParameterPack = false; |
2801 | 147k | TypeSourceInfo *DI; |
2802 | 147k | QualType T; |
2803 | 147k | bool Invalid = false; |
2804 | | |
2805 | 147k | if (D->isExpandedParameterPack()) { |
2806 | | // The non-type template parameter pack is an already-expanded pack |
2807 | | // expansion of types. Substitute into each of the expanded types. |
2808 | 3 | ExpandedParameterPackTypes.reserve(D->getNumExpansionTypes()); |
2809 | 3 | ExpandedParameterPackTypesAsWritten.reserve(D->getNumExpansionTypes()); |
2810 | 12 | for (unsigned I = 0, N = D->getNumExpansionTypes(); I != N; ++I9 ) { |
2811 | 9 | TypeSourceInfo *NewDI = |
2812 | 9 | SemaRef.SubstType(D->getExpansionTypeSourceInfo(I), TemplateArgs, |
2813 | 9 | D->getLocation(), D->getDeclName()); |
2814 | 9 | if (!NewDI) |
2815 | 0 | return nullptr; |
2816 | | |
2817 | 9 | QualType NewT = |
2818 | 9 | SemaRef.CheckNonTypeTemplateParameterType(NewDI, D->getLocation()); |
2819 | 9 | if (NewT.isNull()) |
2820 | 0 | return nullptr; |
2821 | | |
2822 | 9 | ExpandedParameterPackTypesAsWritten.push_back(NewDI); |
2823 | 9 | ExpandedParameterPackTypes.push_back(NewT); |
2824 | 9 | } |
2825 | | |
2826 | 3 | IsExpandedParameterPack = true; |
2827 | 3 | DI = D->getTypeSourceInfo(); |
2828 | 3 | T = DI->getType(); |
2829 | 147k | } else if (D->isPackExpansion()) { |
2830 | | // The non-type template parameter pack's type is a pack expansion of types. |
2831 | | // Determine whether we need to expand this parameter pack into separate |
2832 | | // types. |
2833 | 53 | PackExpansionTypeLoc Expansion = TL.castAs<PackExpansionTypeLoc>(); |
2834 | 53 | TypeLoc Pattern = Expansion.getPatternLoc(); |
2835 | 53 | SmallVector<UnexpandedParameterPack, 2> Unexpanded; |
2836 | 53 | SemaRef.collectUnexpandedParameterPacks(Pattern, Unexpanded); |
2837 | | |
2838 | | // Determine whether the set of unexpanded parameter packs can and should |
2839 | | // be expanded. |
2840 | 53 | bool Expand = true; |
2841 | 53 | bool RetainExpansion = false; |
2842 | 53 | Optional<unsigned> OrigNumExpansions |
2843 | 53 | = Expansion.getTypePtr()->getNumExpansions(); |
2844 | 53 | Optional<unsigned> NumExpansions = OrigNumExpansions; |
2845 | 53 | if (SemaRef.CheckParameterPacksForExpansion(Expansion.getEllipsisLoc(), |
2846 | 53 | Pattern.getSourceRange(), |
2847 | 53 | Unexpanded, |
2848 | 53 | TemplateArgs, |
2849 | 53 | Expand, RetainExpansion, |
2850 | 53 | NumExpansions)) |
2851 | 0 | return nullptr; |
2852 | | |
2853 | 53 | if (Expand) { |
2854 | 128 | for (unsigned I = 0; I != *NumExpansions; ++I81 ) { |
2855 | 82 | Sema::ArgumentPackSubstitutionIndexRAII SubstIndex(SemaRef, I); |
2856 | 82 | TypeSourceInfo *NewDI = SemaRef.SubstType(Pattern, TemplateArgs, |
2857 | 82 | D->getLocation(), |
2858 | 82 | D->getDeclName()); |
2859 | 82 | if (!NewDI) |
2860 | 0 | return nullptr; |
2861 | | |
2862 | 82 | QualType NewT = |
2863 | 82 | SemaRef.CheckNonTypeTemplateParameterType(NewDI, D->getLocation()); |
2864 | 82 | if (NewT.isNull()) |
2865 | 1 | return nullptr; |
2866 | | |
2867 | 81 | ExpandedParameterPackTypesAsWritten.push_back(NewDI); |
2868 | 81 | ExpandedParameterPackTypes.push_back(NewT); |
2869 | 81 | } |
2870 | | |
2871 | | // Note that we have an expanded parameter pack. The "type" of this |
2872 | | // expanded parameter pack is the original expansion type, but callers |
2873 | | // will end up using the expanded parameter pack types for type-checking. |
2874 | 46 | IsExpandedParameterPack = true; |
2875 | 46 | DI = D->getTypeSourceInfo(); |
2876 | 46 | T = DI->getType(); |
2877 | 46 | } else { |
2878 | | // We cannot fully expand the pack expansion now, so substitute into the |
2879 | | // pattern and create a new pack expansion type. |
2880 | 6 | Sema::ArgumentPackSubstitutionIndexRAII SubstIndex(SemaRef, -1); |
2881 | 6 | TypeSourceInfo *NewPattern = SemaRef.SubstType(Pattern, TemplateArgs, |
2882 | 6 | D->getLocation(), |
2883 | 6 | D->getDeclName()); |
2884 | 6 | if (!NewPattern) |
2885 | 0 | return nullptr; |
2886 | | |
2887 | 6 | SemaRef.CheckNonTypeTemplateParameterType(NewPattern, D->getLocation()); |
2888 | 6 | DI = SemaRef.CheckPackExpansion(NewPattern, Expansion.getEllipsisLoc(), |
2889 | 6 | NumExpansions); |
2890 | 6 | if (!DI) |
2891 | 0 | return nullptr; |
2892 | | |
2893 | 6 | T = DI->getType(); |
2894 | 6 | } |
2895 | 147k | } else { |
2896 | | // Simple case: substitution into a parameter that is not a parameter pack. |
2897 | 147k | DI = SemaRef.SubstType(D->getTypeSourceInfo(), TemplateArgs, |
2898 | 147k | D->getLocation(), D->getDeclName()); |
2899 | 147k | if (!DI) |
2900 | 6 | return nullptr; |
2901 | | |
2902 | | // Check that this type is acceptable for a non-type template parameter. |
2903 | 147k | T = SemaRef.CheckNonTypeTemplateParameterType(DI, D->getLocation()); |
2904 | 147k | if (T.isNull()) { |
2905 | 4 | T = SemaRef.Context.IntTy; |
2906 | 4 | Invalid = true; |
2907 | 4 | } |
2908 | 147k | } |
2909 | | |
2910 | 147k | NonTypeTemplateParmDecl *Param; |
2911 | 147k | if (IsExpandedParameterPack) |
2912 | 49 | Param = NonTypeTemplateParmDecl::Create( |
2913 | 49 | SemaRef.Context, Owner, D->getInnerLocStart(), D->getLocation(), |
2914 | 49 | D->getDepth() - TemplateArgs.getNumSubstitutedLevels(), |
2915 | 49 | D->getPosition(), D->getIdentifier(), T, DI, ExpandedParameterPackTypes, |
2916 | 49 | ExpandedParameterPackTypesAsWritten); |
2917 | 147k | else |
2918 | 147k | Param = NonTypeTemplateParmDecl::Create( |
2919 | 147k | SemaRef.Context, Owner, D->getInnerLocStart(), D->getLocation(), |
2920 | 147k | D->getDepth() - TemplateArgs.getNumSubstitutedLevels(), |
2921 | 147k | D->getPosition(), D->getIdentifier(), T, D->isParameterPack(), DI); |
2922 | | |
2923 | 147k | if (AutoTypeLoc AutoLoc = DI->getTypeLoc().getContainedAutoTypeLoc()) |
2924 | 20 | if (AutoLoc.isConstrained()) |
2925 | 0 | if (SemaRef.AttachTypeConstraint( |
2926 | 0 | AutoLoc, Param, |
2927 | 0 | IsExpandedParameterPack |
2928 | 0 | ? DI->getTypeLoc().getAs<PackExpansionTypeLoc>() |
2929 | 0 | .getEllipsisLoc() |
2930 | 0 | : SourceLocation())) |
2931 | 0 | Invalid = true; |
2932 | | |
2933 | 147k | Param->setAccess(AS_public); |
2934 | 147k | Param->setImplicit(D->isImplicit()); |
2935 | 147k | if (Invalid) |
2936 | 4 | Param->setInvalidDecl(); |
2937 | | |
2938 | 147k | if (D->hasDefaultArgument() && !D->defaultArgumentWasInherited()64.4k ) { |
2939 | 64.4k | EnterExpressionEvaluationContext ConstantEvaluated( |
2940 | 64.4k | SemaRef, Sema::ExpressionEvaluationContext::ConstantEvaluated); |
2941 | 64.4k | ExprResult Value = SemaRef.SubstExpr(D->getDefaultArgument(), TemplateArgs); |
2942 | 64.4k | if (!Value.isInvalid()) |
2943 | 64.4k | Param->setDefaultArgument(Value.get()); |
2944 | 64.4k | } |
2945 | | |
2946 | | // Introduce this template parameter's instantiation into the instantiation |
2947 | | // scope. |
2948 | 147k | SemaRef.CurrentInstantiationScope->InstantiatedLocal(D, Param); |
2949 | 147k | return Param; |
2950 | 147k | } |
2951 | | |
2952 | | static void collectUnexpandedParameterPacks( |
2953 | | Sema &S, |
2954 | | TemplateParameterList *Params, |
2955 | 17 | SmallVectorImpl<UnexpandedParameterPack> &Unexpanded) { |
2956 | 18 | for (const auto &P : *Params) { |
2957 | 18 | if (P->isTemplateParameterPack()) |
2958 | 0 | continue; |
2959 | 18 | if (NonTypeTemplateParmDecl *NTTP = dyn_cast<NonTypeTemplateParmDecl>(P)) |
2960 | 17 | S.collectUnexpandedParameterPacks(NTTP->getTypeSourceInfo()->getTypeLoc(), |
2961 | 17 | Unexpanded); |
2962 | 18 | if (TemplateTemplateParmDecl *TTP = dyn_cast<TemplateTemplateParmDecl>(P)) |
2963 | 0 | collectUnexpandedParameterPacks(S, TTP->getTemplateParameters(), |
2964 | 0 | Unexpanded); |
2965 | 18 | } |
2966 | 17 | } |
2967 | | |
2968 | | Decl * |
2969 | | TemplateDeclInstantiator::VisitTemplateTemplateParmDecl( |
2970 | 9.84k | TemplateTemplateParmDecl *D) { |
2971 | | // Instantiate the template parameter list of the template template parameter. |
2972 | 9.84k | TemplateParameterList *TempParams = D->getTemplateParameters(); |
2973 | 9.84k | TemplateParameterList *InstParams; |
2974 | 9.84k | SmallVector<TemplateParameterList*, 8> ExpandedParams; |
2975 | | |
2976 | 9.84k | bool IsExpandedParameterPack = false; |
2977 | | |
2978 | 9.84k | if (D->isExpandedParameterPack()) { |
2979 | | // The template template parameter pack is an already-expanded pack |
2980 | | // expansion of template parameters. Substitute into each of the expanded |
2981 | | // parameters. |
2982 | 1 | ExpandedParams.reserve(D->getNumExpansionTemplateParameters()); |
2983 | 1 | for (unsigned I = 0, N = D->getNumExpansionTemplateParameters(); |
2984 | 1 | I != N; ++I0 ) { |
2985 | 0 | LocalInstantiationScope Scope(SemaRef); |
2986 | 0 | TemplateParameterList *Expansion = |
2987 | 0 | SubstTemplateParams(D->getExpansionTemplateParameters(I)); |
2988 | 0 | if (!Expansion) |
2989 | 0 | return nullptr; |
2990 | 0 | ExpandedParams.push_back(Expansion); |
2991 | 0 | } |
2992 | | |
2993 | 1 | IsExpandedParameterPack = true; |
2994 | 1 | InstParams = TempParams; |
2995 | 9.84k | } else if (D->isPackExpansion()) { |
2996 | | // The template template parameter pack expands to a pack of template |
2997 | | // template parameters. Determine whether we need to expand this parameter |
2998 | | // pack into separate parameters. |
2999 | 17 | SmallVector<UnexpandedParameterPack, 2> Unexpanded; |
3000 | 17 | collectUnexpandedParameterPacks(SemaRef, D->getTemplateParameters(), |
3001 | 17 | Unexpanded); |
3002 | | |
3003 | | // Determine whether the set of unexpanded parameter packs can and should |
3004 | | // be expanded. |
3005 | 17 | bool Expand = true; |
3006 | 17 | bool RetainExpansion = false; |
3007 | 17 | Optional<unsigned> NumExpansions; |
3008 | 17 | if (SemaRef.CheckParameterPacksForExpansion(D->getLocation(), |
3009 | 17 | TempParams->getSourceRange(), |
3010 | 17 | Unexpanded, |
3011 | 17 | TemplateArgs, |
3012 | 17 | Expand, RetainExpansion, |
3013 | 17 | NumExpansions)) |
3014 | 0 | return nullptr; |
3015 | | |
3016 | 17 | if (Expand) { |
3017 | 8.24k | for (unsigned I = 0; I != *NumExpansions; ++I8.22k ) { |
3018 | 8.22k | Sema::ArgumentPackSubstitutionIndexRAII SubstIndex(SemaRef, I); |
3019 | 8.22k | LocalInstantiationScope Scope(SemaRef); |
3020 | 8.22k | TemplateParameterList *Expansion = SubstTemplateParams(TempParams); |
3021 | 8.22k | if (!Expansion) |
3022 | 0 | return nullptr; |
3023 | 8.22k | ExpandedParams.push_back(Expansion); |
3024 | 8.22k | } |
3025 | | |
3026 | | // Note that we have an expanded parameter pack. The "type" of this |
3027 | | // expanded parameter pack is the original expansion type, but callers |
3028 | | // will end up using the expanded parameter pack types for type-checking. |
3029 | 17 | IsExpandedParameterPack = true; |
3030 | 17 | InstParams = TempParams; |
3031 | 17 | } else { |
3032 | | // We cannot fully expand the pack expansion now, so just substitute |
3033 | | // into the pattern. |
3034 | 0 | Sema::ArgumentPackSubstitutionIndexRAII SubstIndex(SemaRef, -1); |
3035 | |
|
3036 | 0 | LocalInstantiationScope Scope(SemaRef); |
3037 | 0 | InstParams = SubstTemplateParams(TempParams); |
3038 | 0 | if (!InstParams) |
3039 | 0 | return nullptr; |
3040 | 0 | } |
3041 | 9.82k | } else { |
3042 | | // Perform the actual substitution of template parameters within a new, |
3043 | | // local instantiation scope. |
3044 | 9.82k | LocalInstantiationScope Scope(SemaRef); |
3045 | 9.82k | InstParams = SubstTemplateParams(TempParams); |
3046 | 9.82k | if (!InstParams) |
3047 | 5 | return nullptr; |
3048 | 9.82k | } |
3049 | | |
3050 | | // Build the template template parameter. |
3051 | 9.84k | TemplateTemplateParmDecl *Param; |
3052 | 9.84k | if (IsExpandedParameterPack) |
3053 | 18 | Param = TemplateTemplateParmDecl::Create( |
3054 | 18 | SemaRef.Context, Owner, D->getLocation(), |
3055 | 18 | D->getDepth() - TemplateArgs.getNumSubstitutedLevels(), |
3056 | 18 | D->getPosition(), D->getIdentifier(), InstParams, ExpandedParams); |
3057 | 9.82k | else |
3058 | 9.82k | Param = TemplateTemplateParmDecl::Create( |
3059 | 9.82k | SemaRef.Context, Owner, D->getLocation(), |
3060 | 9.82k | D->getDepth() - TemplateArgs.getNumSubstitutedLevels(), |
3061 | 9.82k | D->getPosition(), D->isParameterPack(), D->getIdentifier(), InstParams); |
3062 | 9.84k | if (D->hasDefaultArgument() && !D->defaultArgumentWasInherited()6.88k ) { |
3063 | 6.88k | NestedNameSpecifierLoc QualifierLoc = |
3064 | 6.88k | D->getDefaultArgument().getTemplateQualifierLoc(); |
3065 | 6.88k | QualifierLoc = |
3066 | 6.88k | SemaRef.SubstNestedNameSpecifierLoc(QualifierLoc, TemplateArgs); |
3067 | 6.88k | TemplateName TName = SemaRef.SubstTemplateName( |
3068 | 6.88k | QualifierLoc, D->getDefaultArgument().getArgument().getAsTemplate(), |
3069 | 6.88k | D->getDefaultArgument().getTemplateNameLoc(), TemplateArgs); |
3070 | 6.88k | if (!TName.isNull()) |
3071 | 6.88k | Param->setDefaultArgument( |
3072 | 6.88k | SemaRef.Context, |
3073 | 6.88k | TemplateArgumentLoc(SemaRef.Context, TemplateArgument(TName), |
3074 | 6.88k | D->getDefaultArgument().getTemplateQualifierLoc(), |
3075 | 6.88k | D->getDefaultArgument().getTemplateNameLoc())); |
3076 | 6.88k | } |
3077 | 9.84k | Param->setAccess(AS_public); |
3078 | 9.84k | Param->setImplicit(D->isImplicit()); |
3079 | | |
3080 | | // Introduce this template parameter's instantiation into the instantiation |
3081 | | // scope. |
3082 | 9.84k | SemaRef.CurrentInstantiationScope->InstantiatedLocal(D, Param); |
3083 | | |
3084 | 9.84k | return Param; |
3085 | 9.84k | } |
3086 | | |
3087 | 465 | Decl *TemplateDeclInstantiator::VisitUsingDirectiveDecl(UsingDirectiveDecl *D) { |
3088 | | // Using directives are never dependent (and never contain any types or |
3089 | | // expressions), so they require no explicit instantiation work. |
3090 | | |
3091 | 465 | UsingDirectiveDecl *Inst |
3092 | 465 | = UsingDirectiveDecl::Create(SemaRef.Context, Owner, D->getLocation(), |
3093 | 465 | D->getNamespaceKeyLocation(), |
3094 | 465 | D->getQualifierLoc(), |
3095 | 465 | D->getIdentLocation(), |
3096 | 465 | D->getNominatedNamespace(), |
3097 | 465 | D->getCommonAncestor()); |
3098 | | |
3099 | | // Add the using directive to its declaration context |
3100 | | // only if this is not a function or method. |
3101 | 465 | if (!Owner->isFunctionOrMethod()) |
3102 | 0 | Owner->addDecl(Inst); |
3103 | | |
3104 | 465 | return Inst; |
3105 | 465 | } |
3106 | | |
3107 | | Decl *TemplateDeclInstantiator::VisitBaseUsingDecls(BaseUsingDecl *D, |
3108 | | BaseUsingDecl *Inst, |
3109 | 272 | LookupResult *Lookup) { |
3110 | | |
3111 | 272 | bool isFunctionScope = Owner->isFunctionOrMethod(); |
3112 | | |
3113 | 394 | for (auto *Shadow : D->shadows()) { |
3114 | | // FIXME: UsingShadowDecl doesn't preserve its immediate target, so |
3115 | | // reconstruct it in the case where it matters. Hm, can we extract it from |
3116 | | // the DeclSpec when parsing and save it in the UsingDecl itself? |
3117 | 394 | NamedDecl *OldTarget = Shadow->getTargetDecl(); |
3118 | 394 | if (auto *CUSD = dyn_cast<ConstructorUsingShadowDecl>(Shadow)) |
3119 | 48 | if (auto *BaseShadow = CUSD->getNominatedBaseClassShadowDecl()) |
3120 | 4 | OldTarget = BaseShadow; |
3121 | | |
3122 | 394 | NamedDecl *InstTarget = nullptr; |
3123 | 394 | if (auto *EmptyD = |
3124 | 394 | dyn_cast<UnresolvedUsingIfExistsDecl>(Shadow->getTargetDecl())) { |
3125 | 0 | InstTarget = UnresolvedUsingIfExistsDecl::Create( |
3126 | 0 | SemaRef.Context, Owner, EmptyD->getLocation(), EmptyD->getDeclName()); |
3127 | 394 | } else { |
3128 | 394 | InstTarget = cast_or_null<NamedDecl>(SemaRef.FindInstantiatedDecl( |
3129 | 394 | Shadow->getLocation(), OldTarget, TemplateArgs)); |
3130 | 394 | } |
3131 | 394 | if (!InstTarget) |
3132 | 0 | return nullptr; |
3133 | | |
3134 | 394 | UsingShadowDecl *PrevDecl = nullptr; |
3135 | 394 | if (Lookup && |
3136 | 394 | SemaRef.CheckUsingShadowDecl(Inst, InstTarget, *Lookup, PrevDecl)362 ) |
3137 | 3 | continue; |
3138 | | |
3139 | 391 | if (UsingShadowDecl *OldPrev = getPreviousDeclForInstantiation(Shadow)) |
3140 | 0 | PrevDecl = cast_or_null<UsingShadowDecl>(SemaRef.FindInstantiatedDecl( |
3141 | 0 | Shadow->getLocation(), OldPrev, TemplateArgs)); |
3142 | | |
3143 | 391 | UsingShadowDecl *InstShadow = SemaRef.BuildUsingShadowDecl( |
3144 | 391 | /*Scope*/ nullptr, Inst, InstTarget, PrevDecl); |
3145 | 391 | SemaRef.Context.setInstantiatedFromUsingShadowDecl(InstShadow, Shadow); |
3146 | | |
3147 | 391 | if (isFunctionScope) |
3148 | 18 | SemaRef.CurrentInstantiationScope->InstantiatedLocal(Shadow, InstShadow); |
3149 | 391 | } |
3150 | | |
3151 | 272 | return Inst; |
3152 | 272 | } |
3153 | | |
3154 | 267 | Decl *TemplateDeclInstantiator::VisitUsingDecl(UsingDecl *D) { |
3155 | | |
3156 | | // The nested name specifier may be dependent, for example |
3157 | | // template <typename T> struct t { |
3158 | | // struct s1 { T f1(); }; |
3159 | | // struct s2 : s1 { using s1::f1; }; |
3160 | | // }; |
3161 | | // template struct t<int>; |
3162 | | // Here, in using s1::f1, s1 refers to t<T>::s1; |
3163 | | // we need to substitute for t<int>::s1. |
3164 | 267 | NestedNameSpecifierLoc QualifierLoc |
3165 | 267 | = SemaRef.SubstNestedNameSpecifierLoc(D->getQualifierLoc(), |
3166 | 267 | TemplateArgs); |
3167 | 267 | if (!QualifierLoc) |
3168 | 0 | return nullptr; |
3169 | | |
3170 | | // For an inheriting constructor declaration, the name of the using |
3171 | | // declaration is the name of a constructor in this class, not in the |
3172 | | // base class. |
3173 | 267 | DeclarationNameInfo NameInfo = D->getNameInfo(); |
3174 | 267 | if (NameInfo.getName().getNameKind() == DeclarationName::CXXConstructorName) |
3175 | 17 | if (auto *RD = dyn_cast<CXXRecordDecl>(SemaRef.CurContext)) |
3176 | 17 | NameInfo.setName(SemaRef.Context.DeclarationNames.getCXXConstructorName( |
3177 | 17 | SemaRef.Context.getCanonicalType(SemaRef.Context.getRecordType(RD)))); |
3178 | | |
3179 | | // We only need to do redeclaration lookups if we're in a class scope (in |
3180 | | // fact, it's not really even possible in non-class scopes). |
3181 | 267 | bool CheckRedeclaration = Owner->isRecord(); |
3182 | 267 | LookupResult Prev(SemaRef, NameInfo, Sema::LookupUsingDeclName, |
3183 | 267 | Sema::ForVisibleRedeclaration); |
3184 | | |
3185 | 267 | UsingDecl *NewUD = UsingDecl::Create(SemaRef.Context, Owner, |
3186 | 267 | D->getUsingLoc(), |
3187 | 267 | QualifierLoc, |
3188 | 267 | NameInfo, |
3189 | 267 | D->hasTypename()); |
3190 | | |
3191 | 267 | CXXScopeSpec SS; |
3192 | 267 | SS.Adopt(QualifierLoc); |
3193 | 267 | if (CheckRedeclaration) { |
3194 | 252 | Prev.setHideTags(false); |
3195 | 252 | SemaRef.LookupQualifiedName(Prev, Owner); |
3196 | | |
3197 | | // Check for invalid redeclarations. |
3198 | 252 | if (SemaRef.CheckUsingDeclRedeclaration(D->getUsingLoc(), |
3199 | 252 | D->hasTypename(), SS, |
3200 | 252 | D->getLocation(), Prev)) |
3201 | 0 | NewUD->setInvalidDecl(); |
3202 | 252 | } |
3203 | | |
3204 | 267 | if (!NewUD->isInvalidDecl() && |
3205 | 267 | SemaRef.CheckUsingDeclQualifier(D->getUsingLoc(), D->hasTypename(), SS, |
3206 | 267 | NameInfo, D->getLocation(), nullptr, D)) |
3207 | 2 | NewUD->setInvalidDecl(); |
3208 | | |
3209 | 267 | SemaRef.Context.setInstantiatedFromUsingDecl(NewUD, D); |
3210 | 267 | NewUD->setAccess(D->getAccess()); |
3211 | 267 | Owner->addDecl(NewUD); |
3212 | | |
3213 | | // Don't process the shadow decls for an invalid decl. |
3214 | 267 | if (NewUD->isInvalidDecl()) |
3215 | 2 | return NewUD; |
3216 | | |
3217 | | // If the using scope was dependent, or we had dependent bases, we need to |
3218 | | // recheck the inheritance |
3219 | 265 | if (NameInfo.getName().getNameKind() == DeclarationName::CXXConstructorName) |
3220 | 16 | SemaRef.CheckInheritingConstructorUsingDecl(NewUD); |
3221 | | |
3222 | 265 | return VisitBaseUsingDecls(D, NewUD, CheckRedeclaration ? &Prev250 : nullptr15 ); |
3223 | 267 | } |
3224 | | |
3225 | 7 | Decl *TemplateDeclInstantiator::VisitUsingEnumDecl(UsingEnumDecl *D) { |
3226 | | // Cannot be a dependent type, but still could be an instantiation |
3227 | 7 | EnumDecl *EnumD = cast_or_null<EnumDecl>(SemaRef.FindInstantiatedDecl( |
3228 | 7 | D->getLocation(), D->getEnumDecl(), TemplateArgs)); |
3229 | | |
3230 | 7 | if (SemaRef.RequireCompleteEnumDecl(EnumD, EnumD->getLocation())) |
3231 | 0 | return nullptr; |
3232 | | |
3233 | 7 | UsingEnumDecl *NewUD = |
3234 | 7 | UsingEnumDecl::Create(SemaRef.Context, Owner, D->getUsingLoc(), |
3235 | 7 | D->getEnumLoc(), D->getLocation(), EnumD); |
3236 | | |
3237 | 7 | SemaRef.Context.setInstantiatedFromUsingEnumDecl(NewUD, D); |
3238 | 7 | NewUD->setAccess(D->getAccess()); |
3239 | 7 | Owner->addDecl(NewUD); |
3240 | | |
3241 | | // Don't process the shadow decls for an invalid decl. |
3242 | 7 | if (NewUD->isInvalidDecl()) |
3243 | 0 | return NewUD; |
3244 | | |
3245 | | // We don't have to recheck for duplication of the UsingEnumDecl itself, as it |
3246 | | // cannot be dependent, and will therefore have been checked during template |
3247 | | // definition. |
3248 | | |
3249 | 7 | return VisitBaseUsingDecls(D, NewUD, nullptr); |
3250 | 7 | } |
3251 | | |
3252 | 329 | Decl *TemplateDeclInstantiator::VisitUsingShadowDecl(UsingShadowDecl *D) { |
3253 | | // Ignore these; we handle them in bulk when processing the UsingDecl. |
3254 | 329 | return nullptr; |
3255 | 329 | } |
3256 | | |
3257 | | Decl *TemplateDeclInstantiator::VisitConstructorUsingShadowDecl( |
3258 | 51 | ConstructorUsingShadowDecl *D) { |
3259 | | // Ignore these; we handle them in bulk when processing the UsingDecl. |
3260 | 51 | return nullptr; |
3261 | 51 | } |
3262 | | |
3263 | | template <typename T> |
3264 | | Decl *TemplateDeclInstantiator::instantiateUnresolvedUsingDecl( |
3265 | 1.54k | T *D, bool InstantiatingPackElement) { |
3266 | | // If this is a pack expansion, expand it now. |
3267 | 1.54k | if (D->isPackExpansion() && !InstantiatingPackElement189 ) { |
3268 | 70 | SmallVector<UnexpandedParameterPack, 2> Unexpanded; |
3269 | 70 | SemaRef.collectUnexpandedParameterPacks(D->getQualifierLoc(), Unexpanded); |
3270 | 70 | SemaRef.collectUnexpandedParameterPacks(D->getNameInfo(), Unexpanded); |
3271 | | |
3272 | | // Determine whether the set of unexpanded parameter packs can and should |
3273 | | // be expanded. |
3274 | 70 | bool Expand = true; |
3275 | 70 | bool RetainExpansion = false; |
3276 | 70 | Optional<unsigned> NumExpansions; |
3277 | 70 | if (SemaRef.CheckParameterPacksForExpansion( |
3278 | 70 | D->getEllipsisLoc(), D->getSourceRange(), Unexpanded, TemplateArgs, |
3279 | 70 | Expand, RetainExpansion, NumExpansions)) |
3280 | 0 | return nullptr; |
3281 | | |
3282 | | // This declaration cannot appear within a function template signature, |
3283 | | // so we can't have a partial argument list for a parameter pack. |
3284 | 70 | assert(!RetainExpansion && |
3285 | 70 | "should never need to retain an expansion for UsingPackDecl"); |
3286 | | |
3287 | 70 | if (!Expand) { |
3288 | | // We cannot fully expand the pack expansion now, so substitute into the |
3289 | | // pattern and create a new pack expansion. |
3290 | 0 | Sema::ArgumentPackSubstitutionIndexRAII SubstIndex(SemaRef, -1); |
3291 | 0 | return instantiateUnresolvedUsingDecl(D, true); |
3292 | 0 | } |
3293 | | |
3294 | | // Within a function, we don't have any normal way to check for conflicts |
3295 | | // between shadow declarations from different using declarations in the |
3296 | | // same pack expansion, but this is always ill-formed because all expansions |
3297 | | // must produce (conflicting) enumerators. |
3298 | | // |
3299 | | // Sadly we can't just reject this in the template definition because it |
3300 | | // could be valid if the pack is empty or has exactly one expansion. |
3301 | 70 | if (D->getDeclContext()->isFunctionOrMethod() && *NumExpansions > 16 ) { |
3302 | 2 | SemaRef.Diag(D->getEllipsisLoc(), |
3303 | 2 | diag::err_using_decl_redeclaration_expansion); |
3304 | 2 | return nullptr; |
3305 | 2 | } |
3306 | | |
3307 | | // Instantiate the slices of this pack and build a UsingPackDecl. |
3308 | 68 | SmallVector<NamedDecl*, 8> Expansions; |
3309 | 185 | for (unsigned I = 0; I != *NumExpansions; ++I117 ) { |
3310 | 119 | Sema::ArgumentPackSubstitutionIndexRAII SubstIndex(SemaRef, I); |
3311 | 119 | Decl *Slice = instantiateUnresolvedUsingDecl(D, true); |
3312 | 119 | if (!Slice) |
3313 | 2 | return nullptr; |
3314 | | // Note that we can still get unresolved using declarations here, if we |
3315 | | // had arguments for all packs but the pattern also contained other |
3316 | | // template arguments (this only happens during partial substitution, eg |
3317 | | // into the body of a generic lambda in a function template). |
3318 | 117 | Expansions.push_back(cast<NamedDecl>(Slice)); |
3319 | 117 | } |
3320 | | |
3321 | 66 | auto *NewD = SemaRef.BuildUsingPackDecl(D, Expansions); |
3322 | 66 | if (isDeclWithinFunction(D)) |
3323 | 16 | SemaRef.CurrentInstantiationScope->InstantiatedLocal(D, NewD); |
3324 | 66 | return NewD; |
3325 | 68 | } |
3326 | | |
3327 | 1.47k | UnresolvedUsingTypenameDecl *TD = dyn_cast<UnresolvedUsingTypenameDecl>(D); |
3328 | 1.47k | SourceLocation TypenameLoc = TD ? TD->getTypenameLoc()744 : SourceLocation()727 ; |
3329 | | |
3330 | 1.47k | NestedNameSpecifierLoc QualifierLoc |
3331 | 1.47k | = SemaRef.SubstNestedNameSpecifierLoc(D->getQualifierLoc(), |
3332 | 1.47k | TemplateArgs); |
3333 | 1.47k | if (!QualifierLoc) |
3334 | 7 | return nullptr; |
3335 | | |
3336 | 1.46k | CXXScopeSpec SS; |
3337 | 1.46k | SS.Adopt(QualifierLoc); |
3338 | | |
3339 | 1.46k | DeclarationNameInfo NameInfo |
3340 | 1.46k | = SemaRef.SubstDeclarationNameInfo(D->getNameInfo(), TemplateArgs); |
3341 | | |
3342 | | // Produce a pack expansion only if we're not instantiating a particular |
3343 | | // slice of a pack expansion. |
3344 | 1.46k | bool InstantiatingSlice = D->getEllipsisLoc().isValid() && |
3345 | 1.46k | SemaRef.ArgumentPackSubstitutionIndex != -1119 ; |
3346 | 1.46k | SourceLocation EllipsisLoc = |
3347 | 1.46k | InstantiatingSlice ? SourceLocation()119 : D->getEllipsisLoc()1.34k ; |
3348 | | |
3349 | 1.46k | bool IsUsingIfExists = D->template hasAttr<UsingIfExistsAttr>(); |
3350 | 1.46k | NamedDecl *UD = SemaRef.BuildUsingDeclaration( |
3351 | 1.46k | /*Scope*/ nullptr, D->getAccess(), D->getUsingLoc(), |
3352 | 1.46k | /*HasTypename*/ TD, TypenameLoc, SS, NameInfo, EllipsisLoc, |
3353 | 1.46k | ParsedAttributesView(), |
3354 | 1.46k | /*IsInstantiation*/ true, IsUsingIfExists); |
3355 | 1.46k | if (UD) { |
3356 | 1.43k | SemaRef.InstantiateAttrs(TemplateArgs, D, UD); |
3357 | 1.43k | SemaRef.Context.setInstantiatedFromUsingDecl(UD, D); |
3358 | 1.43k | } |
3359 | | |
3360 | 1.46k | return UD; |
3361 | 1.47k | } clang::Decl* clang::TemplateDeclInstantiator::instantiateUnresolvedUsingDecl<clang::UnresolvedUsingTypenameDecl>(clang::UnresolvedUsingTypenameDecl*, bool) Line | Count | Source | 3265 | 763 | T *D, bool InstantiatingPackElement) { | 3266 | | // If this is a pack expansion, expand it now. | 3267 | 763 | if (D->isPackExpansion() && !InstantiatingPackElement50 ) { | 3268 | 19 | SmallVector<UnexpandedParameterPack, 2> Unexpanded; | 3269 | 19 | SemaRef.collectUnexpandedParameterPacks(D->getQualifierLoc(), Unexpanded); | 3270 | 19 | SemaRef.collectUnexpandedParameterPacks(D->getNameInfo(), Unexpanded); | 3271 | | | 3272 | | // Determine whether the set of unexpanded parameter packs can and should | 3273 | | // be expanded. | 3274 | 19 | bool Expand = true; | 3275 | 19 | bool RetainExpansion = false; | 3276 | 19 | Optional<unsigned> NumExpansions; | 3277 | 19 | if (SemaRef.CheckParameterPacksForExpansion( | 3278 | 19 | D->getEllipsisLoc(), D->getSourceRange(), Unexpanded, TemplateArgs, | 3279 | 19 | Expand, RetainExpansion, NumExpansions)) | 3280 | 0 | return nullptr; | 3281 | | | 3282 | | // This declaration cannot appear within a function template signature, | 3283 | | // so we can't have a partial argument list for a parameter pack. | 3284 | 19 | assert(!RetainExpansion && | 3285 | 19 | "should never need to retain an expansion for UsingPackDecl"); | 3286 | | | 3287 | 19 | if (!Expand) { | 3288 | | // We cannot fully expand the pack expansion now, so substitute into the | 3289 | | // pattern and create a new pack expansion. | 3290 | 0 | Sema::ArgumentPackSubstitutionIndexRAII SubstIndex(SemaRef, -1); | 3291 | 0 | return instantiateUnresolvedUsingDecl(D, true); | 3292 | 0 | } | 3293 | | | 3294 | | // Within a function, we don't have any normal way to check for conflicts | 3295 | | // between shadow declarations from different using declarations in the | 3296 | | // same pack expansion, but this is always ill-formed because all expansions | 3297 | | // must produce (conflicting) enumerators. | 3298 | | // | 3299 | | // Sadly we can't just reject this in the template definition because it | 3300 | | // could be valid if the pack is empty or has exactly one expansion. | 3301 | 19 | if (D->getDeclContext()->isFunctionOrMethod() && *NumExpansions > 10 ) { | 3302 | 0 | SemaRef.Diag(D->getEllipsisLoc(), | 3303 | 0 | diag::err_using_decl_redeclaration_expansion); | 3304 | 0 | return nullptr; | 3305 | 0 | } | 3306 | | | 3307 | | // Instantiate the slices of this pack and build a UsingPackDecl. | 3308 | 19 | SmallVector<NamedDecl*, 8> Expansions; | 3309 | 50 | for (unsigned I = 0; I != *NumExpansions; ++I31 ) { | 3310 | 31 | Sema::ArgumentPackSubstitutionIndexRAII SubstIndex(SemaRef, I); | 3311 | 31 | Decl *Slice = instantiateUnresolvedUsingDecl(D, true); | 3312 | 31 | if (!Slice) | 3313 | 0 | return nullptr; | 3314 | | // Note that we can still get unresolved using declarations here, if we | 3315 | | // had arguments for all packs but the pattern also contained other | 3316 | | // template arguments (this only happens during partial substitution, eg | 3317 | | // into the body of a generic lambda in a function template). | 3318 | 31 | Expansions.push_back(cast<NamedDecl>(Slice)); | 3319 | 31 | } | 3320 | | | 3321 | 19 | auto *NewD = SemaRef.BuildUsingPackDecl(D, Expansions); | 3322 | 19 | if (isDeclWithinFunction(D)) | 3323 | 7 | SemaRef.CurrentInstantiationScope->InstantiatedLocal(D, NewD); | 3324 | 19 | return NewD; | 3325 | 19 | } | 3326 | | | 3327 | 744 | UnresolvedUsingTypenameDecl *TD = dyn_cast<UnresolvedUsingTypenameDecl>(D); | 3328 | 744 | SourceLocation TypenameLoc = TD ? TD->getTypenameLoc() : SourceLocation()0 ; | 3329 | | | 3330 | 744 | NestedNameSpecifierLoc QualifierLoc | 3331 | 744 | = SemaRef.SubstNestedNameSpecifierLoc(D->getQualifierLoc(), | 3332 | 744 | TemplateArgs); | 3333 | 744 | if (!QualifierLoc) | 3334 | 0 | return nullptr; | 3335 | | | 3336 | 744 | CXXScopeSpec SS; | 3337 | 744 | SS.Adopt(QualifierLoc); | 3338 | | | 3339 | 744 | DeclarationNameInfo NameInfo | 3340 | 744 | = SemaRef.SubstDeclarationNameInfo(D->getNameInfo(), TemplateArgs); | 3341 | | | 3342 | | // Produce a pack expansion only if we're not instantiating a particular | 3343 | | // slice of a pack expansion. | 3344 | 744 | bool InstantiatingSlice = D->getEllipsisLoc().isValid() && | 3345 | 744 | SemaRef.ArgumentPackSubstitutionIndex != -131 ; | 3346 | 744 | SourceLocation EllipsisLoc = | 3347 | 744 | InstantiatingSlice ? SourceLocation()31 : D->getEllipsisLoc()713 ; | 3348 | | | 3349 | 744 | bool IsUsingIfExists = D->template hasAttr<UsingIfExistsAttr>(); | 3350 | 744 | NamedDecl *UD = SemaRef.BuildUsingDeclaration( | 3351 | 744 | /*Scope*/ nullptr, D->getAccess(), D->getUsingLoc(), | 3352 | 744 | /*HasTypename*/ TD, TypenameLoc, SS, NameInfo, EllipsisLoc, | 3353 | 744 | ParsedAttributesView(), | 3354 | 744 | /*IsInstantiation*/ true, IsUsingIfExists); | 3355 | 744 | if (UD) { | 3356 | 744 | SemaRef.InstantiateAttrs(TemplateArgs, D, UD); | 3357 | 744 | SemaRef.Context.setInstantiatedFromUsingDecl(UD, D); | 3358 | 744 | } | 3359 | | | 3360 | 744 | return UD; | 3361 | 744 | } |
clang::Decl* clang::TemplateDeclInstantiator::instantiateUnresolvedUsingDecl<clang::UnresolvedUsingValueDecl>(clang::UnresolvedUsingValueDecl*, bool) Line | Count | Source | 3265 | 778 | T *D, bool InstantiatingPackElement) { | 3266 | | // If this is a pack expansion, expand it now. | 3267 | 778 | if (D->isPackExpansion() && !InstantiatingPackElement139 ) { | 3268 | 51 | SmallVector<UnexpandedParameterPack, 2> Unexpanded; | 3269 | 51 | SemaRef.collectUnexpandedParameterPacks(D->getQualifierLoc(), Unexpanded); | 3270 | 51 | SemaRef.collectUnexpandedParameterPacks(D->getNameInfo(), Unexpanded); | 3271 | | | 3272 | | // Determine whether the set of unexpanded parameter packs can and should | 3273 | | // be expanded. | 3274 | 51 | bool Expand = true; | 3275 | 51 | bool RetainExpansion = false; | 3276 | 51 | Optional<unsigned> NumExpansions; | 3277 | 51 | if (SemaRef.CheckParameterPacksForExpansion( | 3278 | 51 | D->getEllipsisLoc(), D->getSourceRange(), Unexpanded, TemplateArgs, | 3279 | 51 | Expand, RetainExpansion, NumExpansions)) | 3280 | 0 | return nullptr; | 3281 | | | 3282 | | // This declaration cannot appear within a function template signature, | 3283 | | // so we can't have a partial argument list for a parameter pack. | 3284 | 51 | assert(!RetainExpansion && | 3285 | 51 | "should never need to retain an expansion for UsingPackDecl"); | 3286 | | | 3287 | 51 | if (!Expand) { | 3288 | | // We cannot fully expand the pack expansion now, so substitute into the | 3289 | | // pattern and create a new pack expansion. | 3290 | 0 | Sema::ArgumentPackSubstitutionIndexRAII SubstIndex(SemaRef, -1); | 3291 | 0 | return instantiateUnresolvedUsingDecl(D, true); | 3292 | 0 | } | 3293 | | | 3294 | | // Within a function, we don't have any normal way to check for conflicts | 3295 | | // between shadow declarations from different using declarations in the | 3296 | | // same pack expansion, but this is always ill-formed because all expansions | 3297 | | // must produce (conflicting) enumerators. | 3298 | | // | 3299 | | // Sadly we can't just reject this in the template definition because it | 3300 | | // could be valid if the pack is empty or has exactly one expansion. | 3301 | 51 | if (D->getDeclContext()->isFunctionOrMethod() && *NumExpansions > 16 ) { | 3302 | 2 | SemaRef.Diag(D->getEllipsisLoc(), | 3303 | 2 | diag::err_using_decl_redeclaration_expansion); | 3304 | 2 | return nullptr; | 3305 | 2 | } | 3306 | | | 3307 | | // Instantiate the slices of this pack and build a UsingPackDecl. | 3308 | 49 | SmallVector<NamedDecl*, 8> Expansions; | 3309 | 135 | for (unsigned I = 0; I != *NumExpansions; ++I86 ) { | 3310 | 88 | Sema::ArgumentPackSubstitutionIndexRAII SubstIndex(SemaRef, I); | 3311 | 88 | Decl *Slice = instantiateUnresolvedUsingDecl(D, true); | 3312 | 88 | if (!Slice) | 3313 | 2 | return nullptr; | 3314 | | // Note that we can still get unresolved using declarations here, if we | 3315 | | // had arguments for all packs but the pattern also contained other | 3316 | | // template arguments (this only happens during partial substitution, eg | 3317 | | // into the body of a generic lambda in a function template). | 3318 | 86 | Expansions.push_back(cast<NamedDecl>(Slice)); | 3319 | 86 | } | 3320 | | | 3321 | 47 | auto *NewD = SemaRef.BuildUsingPackDecl(D, Expansions); | 3322 | 47 | if (isDeclWithinFunction(D)) | 3323 | 9 | SemaRef.CurrentInstantiationScope->InstantiatedLocal(D, NewD); | 3324 | 47 | return NewD; | 3325 | 49 | } | 3326 | | | 3327 | 727 | UnresolvedUsingTypenameDecl *TD = dyn_cast<UnresolvedUsingTypenameDecl>(D); | 3328 | 727 | SourceLocation TypenameLoc = TD ? TD->getTypenameLoc()0 : SourceLocation(); | 3329 | | | 3330 | 727 | NestedNameSpecifierLoc QualifierLoc | 3331 | 727 | = SemaRef.SubstNestedNameSpecifierLoc(D->getQualifierLoc(), | 3332 | 727 | TemplateArgs); | 3333 | 727 | if (!QualifierLoc) | 3334 | 7 | return nullptr; | 3335 | | | 3336 | 720 | CXXScopeSpec SS; | 3337 | 720 | SS.Adopt(QualifierLoc); | 3338 | | | 3339 | 720 | DeclarationNameInfo NameInfo | 3340 | 720 | = SemaRef.SubstDeclarationNameInfo(D->getNameInfo(), TemplateArgs); | 3341 | | | 3342 | | // Produce a pack expansion only if we're not instantiating a particular | 3343 | | // slice of a pack expansion. | 3344 | 720 | bool InstantiatingSlice = D->getEllipsisLoc().isValid() && | 3345 | 720 | SemaRef.ArgumentPackSubstitutionIndex != -188 ; | 3346 | 720 | SourceLocation EllipsisLoc = | 3347 | 720 | InstantiatingSlice ? SourceLocation()88 : D->getEllipsisLoc()632 ; | 3348 | | | 3349 | 720 | bool IsUsingIfExists = D->template hasAttr<UsingIfExistsAttr>(); | 3350 | 720 | NamedDecl *UD = SemaRef.BuildUsingDeclaration( | 3351 | 720 | /*Scope*/ nullptr, D->getAccess(), D->getUsingLoc(), | 3352 | 720 | /*HasTypename*/ TD, TypenameLoc, SS, NameInfo, EllipsisLoc, | 3353 | 720 | ParsedAttributesView(), | 3354 | 720 | /*IsInstantiation*/ true, IsUsingIfExists); | 3355 | 720 | if (UD) { | 3356 | 693 | SemaRef.InstantiateAttrs(TemplateArgs, D, UD); | 3357 | 693 | SemaRef.Context.setInstantiatedFromUsingDecl(UD, D); | 3358 | 693 | } | 3359 | | | 3360 | 720 | return UD; | 3361 | 727 | } |
|
3362 | | |
3363 | | Decl *TemplateDeclInstantiator::VisitUnresolvedUsingTypenameDecl( |
3364 | 732 | UnresolvedUsingTypenameDecl *D) { |
3365 | 732 | return instantiateUnresolvedUsingDecl(D); |
3366 | 732 | } |
3367 | | |
3368 | | Decl *TemplateDeclInstantiator::VisitUnresolvedUsingValueDecl( |
3369 | 690 | UnresolvedUsingValueDecl *D) { |
3370 | 690 | return instantiateUnresolvedUsingDecl(D); |
3371 | 690 | } |
3372 | | |
3373 | | Decl *TemplateDeclInstantiator::VisitUnresolvedUsingIfExistsDecl( |
3374 | 0 | UnresolvedUsingIfExistsDecl *D) { |
3375 | 0 | llvm_unreachable("referring to unresolved decl out of UsingShadowDecl"); |
3376 | 0 | } |
3377 | | |
3378 | 8 | Decl *TemplateDeclInstantiator::VisitUsingPackDecl(UsingPackDecl *D) { |
3379 | 8 | SmallVector<NamedDecl*, 8> Expansions; |
3380 | 10 | for (auto *UD : D->expansions()) { |
3381 | 10 | if (NamedDecl *NewUD = |
3382 | 10 | SemaRef.FindInstantiatedDecl(D->getLocation(), UD, TemplateArgs)) |
3383 | 10 | Expansions.push_back(NewUD); |
3384 | 0 | else |
3385 | 0 | return nullptr; |
3386 | 10 | } |
3387 | | |
3388 | 8 | auto *NewD = SemaRef.BuildUsingPackDecl(D, Expansions); |
3389 | 8 | if (isDeclWithinFunction(D)) |
3390 | 8 | SemaRef.CurrentInstantiationScope->InstantiatedLocal(D, NewD); |
3391 | 8 | return NewD; |
3392 | 8 | } |
3393 | | |
3394 | | Decl *TemplateDeclInstantiator::VisitClassScopeFunctionSpecializationDecl( |
3395 | 92 | ClassScopeFunctionSpecializationDecl *Decl) { |
3396 | 92 | CXXMethodDecl *OldFD = Decl->getSpecialization(); |
3397 | 92 | return cast_or_null<CXXMethodDecl>( |
3398 | 92 | VisitCXXMethodDecl(OldFD, nullptr, Decl->getTemplateArgsAsWritten())); |
3399 | 92 | } |
3400 | | |
3401 | | Decl *TemplateDeclInstantiator::VisitOMPThreadPrivateDecl( |
3402 | 242 | OMPThreadPrivateDecl *D) { |
3403 | 242 | SmallVector<Expr *, 5> Vars; |
3404 | 266 | for (auto *I : D->varlists()) { |
3405 | 266 | Expr *Var = SemaRef.SubstExpr(I, TemplateArgs).get(); |
3406 | 266 | assert(isa<DeclRefExpr>(Var) && "threadprivate arg is not a DeclRefExpr"); |
3407 | 0 | Vars.push_back(Var); |
3408 | 266 | } |
3409 | | |
3410 | 242 | OMPThreadPrivateDecl *TD = |
3411 | 242 | SemaRef.CheckOMPThreadPrivateDecl(D->getLocation(), Vars); |
3412 | | |
3413 | 242 | TD->setAccess(AS_public); |
3414 | 242 | Owner->addDecl(TD); |
3415 | | |
3416 | 242 | return TD; |
3417 | 242 | } |
3418 | | |
3419 | 82 | Decl *TemplateDeclInstantiator::VisitOMPAllocateDecl(OMPAllocateDecl *D) { |
3420 | 82 | SmallVector<Expr *, 5> Vars; |
3421 | 82 | for (auto *I : D->varlists()) { |
3422 | 82 | Expr *Var = SemaRef.SubstExpr(I, TemplateArgs).get(); |
3423 | 82 | assert(isa<DeclRefExpr>(Var) && "allocate arg is not a DeclRefExpr"); |
3424 | 0 | Vars.push_back(Var); |
3425 | 82 | } |
3426 | 82 | SmallVector<OMPClause *, 4> Clauses; |
3427 | | // Copy map clauses from the original mapper. |
3428 | 82 | for (OMPClause *C : D->clauselists()) { |
3429 | 69 | OMPClause *IC = nullptr; |
3430 | 69 | if (auto *AC = dyn_cast<OMPAllocatorClause>(C)) { |
3431 | 61 | ExprResult NewE = SemaRef.SubstExpr(AC->getAllocator(), TemplateArgs); |
3432 | 61 | if (!NewE.isUsable()) |
3433 | 0 | continue; |
3434 | 61 | IC = SemaRef.ActOnOpenMPAllocatorClause( |
3435 | 61 | NewE.get(), AC->getBeginLoc(), AC->getLParenLoc(), AC->getEndLoc()); |
3436 | 61 | } else if (auto *8 AC8 = dyn_cast<OMPAlignClause>(C)) { |
3437 | 8 | ExprResult NewE = SemaRef.SubstExpr(AC->getAlignment(), TemplateArgs); |
3438 | 8 | if (!NewE.isUsable()) |
3439 | 0 | continue; |
3440 | 8 | IC = SemaRef.ActOnOpenMPAlignClause(NewE.get(), AC->getBeginLoc(), |
3441 | 8 | AC->getLParenLoc(), AC->getEndLoc()); |
3442 | | // If align clause value ends up being invalid, this can end up null. |
3443 | 8 | if (!IC) |
3444 | 1 | continue; |
3445 | 8 | } |
3446 | 68 | Clauses.push_back(IC); |
3447 | 68 | } |
3448 | | |
3449 | 82 | Sema::DeclGroupPtrTy Res = SemaRef.ActOnOpenMPAllocateDirective( |
3450 | 82 | D->getLocation(), Vars, Clauses, Owner); |
3451 | 82 | if (Res.get().isNull()) |
3452 | 0 | return nullptr; |
3453 | 82 | return Res.get().getSingleDecl(); |
3454 | 82 | } |
3455 | | |
3456 | 0 | Decl *TemplateDeclInstantiator::VisitOMPRequiresDecl(OMPRequiresDecl *D) { |
3457 | 0 | llvm_unreachable( |
3458 | 0 | "Requires directive cannot be instantiated within a dependent context"); |
3459 | 0 | } |
3460 | | |
3461 | | Decl *TemplateDeclInstantiator::VisitOMPDeclareReductionDecl( |
3462 | 156 | OMPDeclareReductionDecl *D) { |
3463 | | // Instantiate type and check if it is allowed. |
3464 | 156 | const bool RequiresInstantiation = |
3465 | 156 | D->getType()->isDependentType() || |
3466 | 156 | D->getType()->isInstantiationDependentType()26 || |
3467 | 156 | D->getType()->containsUnexpandedParameterPack()26 ; |
3468 | 156 | QualType SubstReductionType; |
3469 | 156 | if (RequiresInstantiation) { |
3470 | 130 | SubstReductionType = SemaRef.ActOnOpenMPDeclareReductionType( |
3471 | 130 | D->getLocation(), |
3472 | 130 | ParsedType::make(SemaRef.SubstType( |
3473 | 130 | D->getType(), TemplateArgs, D->getLocation(), DeclarationName()))); |
3474 | 130 | } else { |
3475 | 26 | SubstReductionType = D->getType(); |
3476 | 26 | } |
3477 | 156 | if (SubstReductionType.isNull()) |
3478 | 12 | return nullptr; |
3479 | 144 | Expr *Combiner = D->getCombiner(); |
3480 | 144 | Expr *Init = D->getInitializer(); |
3481 | 144 | bool IsCorrect = true; |
3482 | | // Create instantiated copy. |
3483 | 144 | std::pair<QualType, SourceLocation> ReductionTypes[] = { |
3484 | 144 | std::make_pair(SubstReductionType, D->getLocation())}; |
3485 | 144 | auto *PrevDeclInScope = D->getPrevDeclInScope(); |
3486 | 144 | if (PrevDeclInScope && !PrevDeclInScope->isInvalidDecl()20 ) { |
3487 | 20 | PrevDeclInScope = cast<OMPDeclareReductionDecl>( |
3488 | 20 | SemaRef.CurrentInstantiationScope->findInstantiationOf(PrevDeclInScope) |
3489 | 20 | ->get<Decl *>()); |
3490 | 20 | } |
3491 | 144 | auto DRD = SemaRef.ActOnOpenMPDeclareReductionDirectiveStart( |
3492 | 144 | /*S=*/nullptr, Owner, D->getDeclName(), ReductionTypes, D->getAccess(), |
3493 | 144 | PrevDeclInScope); |
3494 | 144 | auto *NewDRD = cast<OMPDeclareReductionDecl>(DRD.get().getSingleDecl()); |
3495 | 144 | SemaRef.CurrentInstantiationScope->InstantiatedLocal(D, NewDRD); |
3496 | 144 | Expr *SubstCombiner = nullptr; |
3497 | 144 | Expr *SubstInitializer = nullptr; |
3498 | | // Combiners instantiation sequence. |
3499 | 144 | if (Combiner) { |
3500 | 144 | SemaRef.ActOnOpenMPDeclareReductionCombinerStart( |
3501 | 144 | /*S=*/nullptr, NewDRD); |
3502 | 144 | SemaRef.CurrentInstantiationScope->InstantiatedLocal( |
3503 | 144 | cast<DeclRefExpr>(D->getCombinerIn())->getDecl(), |
3504 | 144 | cast<DeclRefExpr>(NewDRD->getCombinerIn())->getDecl()); |
3505 | 144 | SemaRef.CurrentInstantiationScope->InstantiatedLocal( |
3506 | 144 | cast<DeclRefExpr>(D->getCombinerOut())->getDecl(), |
3507 | 144 | cast<DeclRefExpr>(NewDRD->getCombinerOut())->getDecl()); |
3508 | 144 | auto *ThisContext = dyn_cast_or_null<CXXRecordDecl>(Owner); |
3509 | 144 | Sema::CXXThisScopeRAII ThisScope(SemaRef, ThisContext, Qualifiers(), |
3510 | 144 | ThisContext); |
3511 | 144 | SubstCombiner = SemaRef.SubstExpr(Combiner, TemplateArgs).get(); |
3512 | 144 | SemaRef.ActOnOpenMPDeclareReductionCombinerEnd(NewDRD, SubstCombiner); |
3513 | 144 | } |
3514 | | // Initializers instantiation sequence. |
3515 | 144 | if (Init) { |
3516 | 52 | VarDecl *OmpPrivParm = SemaRef.ActOnOpenMPDeclareReductionInitializerStart( |
3517 | 52 | /*S=*/nullptr, NewDRD); |
3518 | 52 | SemaRef.CurrentInstantiationScope->InstantiatedLocal( |
3519 | 52 | cast<DeclRefExpr>(D->getInitOrig())->getDecl(), |
3520 | 52 | cast<DeclRefExpr>(NewDRD->getInitOrig())->getDecl()); |
3521 | 52 | SemaRef.CurrentInstantiationScope->InstantiatedLocal( |
3522 | 52 | cast<DeclRefExpr>(D->getInitPriv())->getDecl(), |
3523 | 52 | cast<DeclRefExpr>(NewDRD->getInitPriv())->getDecl()); |
3524 | 52 | if (D->getInitializerKind() == OMPDeclareReductionDecl::CallInit) { |
3525 | 4 | SubstInitializer = SemaRef.SubstExpr(Init, TemplateArgs).get(); |
3526 | 48 | } else { |
3527 | 48 | auto *OldPrivParm = |
3528 | 48 | cast<VarDecl>(cast<DeclRefExpr>(D->getInitPriv())->getDecl()); |
3529 | 48 | IsCorrect = IsCorrect && OldPrivParm->hasInit(); |
3530 | 48 | if (IsCorrect) |
3531 | 48 | SemaRef.InstantiateVariableInitializer(OmpPrivParm, OldPrivParm, |
3532 | 48 | TemplateArgs); |
3533 | 48 | } |
3534 | 52 | SemaRef.ActOnOpenMPDeclareReductionInitializerEnd(NewDRD, SubstInitializer, |
3535 | 52 | OmpPrivParm); |
3536 | 52 | } |
3537 | 144 | IsCorrect = IsCorrect && SubstCombiner && |
3538 | 144 | (142 !Init142 || |
3539 | 142 | (52 D->getInitializerKind() == OMPDeclareReductionDecl::CallInit52 && |
3540 | 52 | SubstInitializer4 ) || |
3541 | 142 | (48 D->getInitializerKind() != OMPDeclareReductionDecl::CallInit48 && |
3542 | 48 | !SubstInitializer)); |
3543 | | |
3544 | 144 | (void)SemaRef.ActOnOpenMPDeclareReductionDirectiveEnd( |
3545 | 144 | /*S=*/nullptr, DRD, IsCorrect && !D->isInvalidDecl()142 ); |
3546 | | |
3547 | 144 | return NewDRD; |
3548 | 156 | } |
3549 | | |
3550 | | Decl * |
3551 | 30 | TemplateDeclInstantiator::VisitOMPDeclareMapperDecl(OMPDeclareMapperDecl *D) { |
3552 | | // Instantiate type and check if it is allowed. |
3553 | 30 | const bool RequiresInstantiation = |
3554 | 30 | D->getType()->isDependentType() || |
3555 | 30 | D->getType()->isInstantiationDependentType()18 || |
3556 | 30 | D->getType()->containsUnexpandedParameterPack()18 ; |
3557 | 30 | QualType SubstMapperTy; |
3558 | 30 | DeclarationName VN = D->getVarName(); |
3559 | 30 | if (RequiresInstantiation) { |
3560 | 12 | SubstMapperTy = SemaRef.ActOnOpenMPDeclareMapperType( |
3561 | 12 | D->getLocation(), |
3562 | 12 | ParsedType::make(SemaRef.SubstType(D->getType(), TemplateArgs, |
3563 | 12 | D->getLocation(), VN))); |
3564 | 18 | } else { |
3565 | 18 | SubstMapperTy = D->getType(); |
3566 | 18 | } |
3567 | 30 | if (SubstMapperTy.isNull()) |
3568 | 0 | return nullptr; |
3569 | | // Create an instantiated copy of mapper. |
3570 | 30 | auto *PrevDeclInScope = D->getPrevDeclInScope(); |
3571 | 30 | if (PrevDeclInScope && !PrevDeclInScope->isInvalidDecl()4 ) { |
3572 | 4 | PrevDeclInScope = cast<OMPDeclareMapperDecl>( |
3573 | 4 | SemaRef.CurrentInstantiationScope->findInstantiationOf(PrevDeclInScope) |
3574 | 4 | ->get<Decl *>()); |
3575 | 4 | } |
3576 | 30 | bool IsCorrect = true; |
3577 | 30 | SmallVector<OMPClause *, 6> Clauses; |
3578 | | // Instantiate the mapper variable. |
3579 | 30 | DeclarationNameInfo DirName; |
3580 | 30 | SemaRef.StartOpenMPDSABlock(llvm::omp::OMPD_declare_mapper, DirName, |
3581 | 30 | /*S=*/nullptr, |
3582 | 30 | (*D->clauselist_begin())->getBeginLoc()); |
3583 | 30 | ExprResult MapperVarRef = SemaRef.ActOnOpenMPDeclareMapperDirectiveVarDecl( |
3584 | 30 | /*S=*/nullptr, SubstMapperTy, D->getLocation(), VN); |
3585 | 30 | SemaRef.CurrentInstantiationScope->InstantiatedLocal( |
3586 | 30 | cast<DeclRefExpr>(D->getMapperVarRef())->getDecl(), |
3587 | 30 | cast<DeclRefExpr>(MapperVarRef.get())->getDecl()); |
3588 | 30 | auto *ThisContext = dyn_cast_or_null<CXXRecordDecl>(Owner); |
3589 | 30 | Sema::CXXThisScopeRAII ThisScope(SemaRef, ThisContext, Qualifiers(), |
3590 | 30 | ThisContext); |
3591 | | // Instantiate map clauses. |
3592 | 30 | for (OMPClause *C : D->clauselists()) { |
3593 | 30 | auto *OldC = cast<OMPMapClause>(C); |
3594 | 30 | SmallVector<Expr *, 4> NewVars; |
3595 | 30 | for (Expr *OE : OldC->varlists()) { |
3596 | 30 | Expr *NE = SemaRef.SubstExpr(OE, TemplateArgs).get(); |
3597 | 30 | if (!NE) { |
3598 | 0 | IsCorrect = false; |
3599 | 0 | break; |
3600 | 0 | } |
3601 | 30 | NewVars.push_back(NE); |
3602 | 30 | } |
3603 | 30 | if (!IsCorrect) |
3604 | 0 | break; |
3605 | 30 | NestedNameSpecifierLoc NewQualifierLoc = |
3606 | 30 | SemaRef.SubstNestedNameSpecifierLoc(OldC->getMapperQualifierLoc(), |
3607 | 30 | TemplateArgs); |
3608 | 30 | CXXScopeSpec SS; |
3609 | 30 | SS.Adopt(NewQualifierLoc); |
3610 | 30 | DeclarationNameInfo NewNameInfo = |
3611 | 30 | SemaRef.SubstDeclarationNameInfo(OldC->getMapperIdInfo(), TemplateArgs); |
3612 | 30 | OMPVarListLocTy Locs(OldC->getBeginLoc(), OldC->getLParenLoc(), |
3613 | 30 | OldC->getEndLoc()); |
3614 | 30 | OMPClause *NewC = SemaRef.ActOnOpenMPMapClause( |
3615 | 30 | OldC->getMapTypeModifiers(), OldC->getMapTypeModifiersLoc(), SS, |
3616 | 30 | NewNameInfo, OldC->getMapType(), OldC->isImplicitMapType(), |
3617 | 30 | OldC->getMapLoc(), OldC->getColonLoc(), NewVars, Locs); |
3618 | 30 | Clauses.push_back(NewC); |
3619 | 30 | } |
3620 | 30 | SemaRef.EndOpenMPDSABlock(nullptr); |
3621 | 30 | if (!IsCorrect) |
3622 | 0 | return nullptr; |
3623 | 30 | Sema::DeclGroupPtrTy DG = SemaRef.ActOnOpenMPDeclareMapperDirective( |
3624 | 30 | /*S=*/nullptr, Owner, D->getDeclName(), SubstMapperTy, D->getLocation(), |
3625 | 30 | VN, D->getAccess(), MapperVarRef.get(), Clauses, PrevDeclInScope); |
3626 | 30 | Decl *NewDMD = DG.get().getSingleDecl(); |
3627 | 30 | SemaRef.CurrentInstantiationScope->InstantiatedLocal(D, NewDMD); |
3628 | 30 | return NewDMD; |
3629 | 30 | } |
3630 | | |
3631 | | Decl *TemplateDeclInstantiator::VisitOMPCapturedExprDecl( |
3632 | 0 | OMPCapturedExprDecl * /*D*/) { |
3633 | 0 | llvm_unreachable("Should not be met in templates"); |
3634 | 0 | } |
3635 | | |
3636 | 352k | Decl *TemplateDeclInstantiator::VisitFunctionDecl(FunctionDecl *D) { |
3637 | 352k | return VisitFunctionDecl(D, nullptr); |
3638 | 352k | } |
3639 | | |
3640 | | Decl * |
3641 | 612 | TemplateDeclInstantiator::VisitCXXDeductionGuideDecl(CXXDeductionGuideDecl *D) { |
3642 | 612 | Decl *Inst = VisitFunctionDecl(D, nullptr); |
3643 | 612 | if (Inst && !D->getDescribedFunctionTemplate()599 ) |
3644 | 1 | Owner->addDecl(Inst); |
3645 | 612 | return Inst; |
3646 | 612 | } |
3647 | | |
3648 | 1.01M | Decl *TemplateDeclInstantiator::VisitCXXMethodDecl(CXXMethodDecl *D) { |
3649 | 1.01M | return VisitCXXMethodDecl(D, nullptr); |
3650 | 1.01M | } |
3651 | | |
3652 | 0 | Decl *TemplateDeclInstantiator::VisitRecordDecl(RecordDecl *D) { |
3653 | 0 | llvm_unreachable("There are only CXXRecordDecls in C++"); |
3654 | 0 | } |
3655 | | |
3656 | | Decl * |
3657 | | TemplateDeclInstantiator::VisitClassTemplateSpecializationDecl( |
3658 | 39 | ClassTemplateSpecializationDecl *D) { |
3659 | | // As a MS extension, we permit class-scope explicit specialization |
3660 | | // of member class templates. |
3661 | 39 | ClassTemplateDecl *ClassTemplate = D->getSpecializedTemplate(); |
3662 | 39 | assert(ClassTemplate->getDeclContext()->isRecord() && |
3663 | 39 | D->getTemplateSpecializationKind() == TSK_ExplicitSpecialization && |
3664 | 39 | "can only instantiate an explicit specialization " |
3665 | 39 | "for a member class template"); |
3666 | | |
3667 | | // Lookup the already-instantiated declaration in the instantiation |
3668 | | // of the class template. |
3669 | 0 | ClassTemplateDecl *InstClassTemplate = |
3670 | 39 | cast_or_null<ClassTemplateDecl>(SemaRef.FindInstantiatedDecl( |
3671 | 39 | D->getLocation(), ClassTemplate, TemplateArgs)); |
3672 | 39 | if (!InstClassTemplate) |
3673 | 0 | return nullptr; |
3674 | | |
3675 | | // Substitute into the template arguments of the class template explicit |
3676 | | // specialization. |
3677 | 39 | TemplateSpecializationTypeLoc Loc = D->getTypeAsWritten()->getTypeLoc(). |
3678 | 39 | castAs<TemplateSpecializationTypeLoc>(); |
3679 | 39 | TemplateArgumentListInfo InstTemplateArgs(Loc.getLAngleLoc(), |
3680 | 39 | Loc.getRAngleLoc()); |
3681 | 39 | SmallVector<TemplateArgumentLoc, 4> ArgLocs; |
3682 | 77 | for (unsigned I = 0; I != Loc.getNumArgs(); ++I38 ) |
3683 | 38 | ArgLocs.push_back(Loc.getArgLoc(I)); |
3684 | 39 | if (SemaRef.SubstTemplateArguments(ArgLocs, TemplateArgs, InstTemplateArgs)) |
3685 | 0 | return nullptr; |
3686 | | |
3687 | | // Check that the template argument list is well-formed for this |
3688 | | // class template. |
3689 | 39 | SmallVector<TemplateArgument, 4> Converted; |
3690 | 39 | if (SemaRef.CheckTemplateArgumentList(InstClassTemplate, |
3691 | 39 | D->getLocation(), |
3692 | 39 | InstTemplateArgs, |
3693 | 39 | false, |
3694 | 39 | Converted, |
3695 | 39 | /*UpdateArgsWithConversions=*/true)) |
3696 | 0 | return nullptr; |
3697 | | |
3698 | | // Figure out where to insert this class template explicit specialization |
3699 | | // in the member template's set of class template explicit specializations. |
3700 | 39 | void *InsertPos = nullptr; |
3701 | 39 | ClassTemplateSpecializationDecl *PrevDecl = |
3702 | 39 | InstClassTemplate->findSpecialization(Converted, InsertPos); |
3703 | | |
3704 | | // Check whether we've already seen a conflicting instantiation of this |
3705 | | // declaration (for instance, if there was a prior implicit instantiation). |
3706 | 39 | bool Ignored; |
3707 | 39 | if (PrevDecl && |
3708 | 39 | SemaRef.CheckSpecializationInstantiationRedecl(D->getLocation(), |
3709 | 14 | D->getSpecializationKind(), |
3710 | 14 | PrevDecl, |
3711 | 14 | PrevDecl->getSpecializationKind(), |
3712 | 14 | PrevDecl->getPointOfInstantiation(), |
3713 | 14 | Ignored)) |
3714 | 2 | return nullptr; |
3715 | | |
3716 | | // If PrevDecl was a definition and D is also a definition, diagnose. |
3717 | | // This happens in cases like: |
3718 | | // |
3719 | | // template<typename T, typename U> |
3720 | | // struct Outer { |
3721 | | // template<typename X> struct Inner; |
3722 | | // template<> struct Inner<T> {}; |
3723 | | // template<> struct Inner<U> {}; |
3724 | | // }; |
3725 | | // |
3726 | | // Outer<int, int> outer; // error: the explicit specializations of Inner |
3727 | | // // have the same signature. |
3728 | 37 | if (PrevDecl && PrevDecl->getDefinition()12 && |
3729 | 37 | D->isThisDeclarationADefinition()7 ) { |
3730 | 7 | SemaRef.Diag(D->getLocation(), diag::err_redefinition) << PrevDecl; |
3731 | 7 | SemaRef.Diag(PrevDecl->getDefinition()->getLocation(), |
3732 | 7 | diag::note_previous_definition); |
3733 | 7 | return nullptr; |
3734 | 7 | } |
3735 | | |
3736 | | // Create the class template partial specialization declaration. |
3737 | 30 | ClassTemplateSpecializationDecl *InstD = |
3738 | 30 | ClassTemplateSpecializationDecl::Create( |
3739 | 30 | SemaRef.Context, D->getTagKind(), Owner, D->getBeginLoc(), |
3740 | 30 | D->getLocation(), InstClassTemplate, Converted, PrevDecl); |
3741 | | |
3742 | | // Add this partial specialization to the set of class template partial |
3743 | | // specializations. |
3744 | 30 | if (!PrevDecl) |
3745 | 25 | InstClassTemplate->AddSpecialization(InstD, InsertPos); |
3746 | | |
3747 | | // Substitute the nested name specifier, if any. |
3748 | 30 | if (SubstQualifier(D, InstD)) |
3749 | 0 | return nullptr; |
3750 | | |
3751 | | // Build the canonical type that describes the converted template |
3752 | | // arguments of the class template explicit specialization. |
3753 | 30 | QualType CanonType = SemaRef.Context.getTemplateSpecializationType( |
3754 | 30 | TemplateName(InstClassTemplate), Converted, |
3755 | 30 | SemaRef.Context.getRecordType(InstD)); |
3756 | | |
3757 | | // Build the fully-sugared type for this class template |
3758 | | // specialization as the user wrote in the specialization |
3759 | | // itself. This means that we'll pretty-print the type retrieved |
3760 | | // from the specialization's declaration the way that the user |
3761 | | // actually wrote the specialization, rather than formatting the |
3762 | | // name based on the "canonical" representation used to store the |
3763 | | // template arguments in the specialization. |
3764 | 30 | TypeSourceInfo *WrittenTy = SemaRef.Context.getTemplateSpecializationTypeInfo( |
3765 | 30 | TemplateName(InstClassTemplate), D->getLocation(), InstTemplateArgs, |
3766 | 30 | CanonType); |
3767 | | |
3768 | 30 | InstD->setAccess(D->getAccess()); |
3769 | 30 | InstD->setInstantiationOfMemberClass(D, TSK_ImplicitInstantiation); |
3770 | 30 | InstD->setSpecializationKind(D->getSpecializationKind()); |
3771 | 30 | InstD->setTypeAsWritten(WrittenTy); |
3772 | 30 | InstD->setExternLoc(D->getExternLoc()); |
3773 | 30 | InstD->setTemplateKeywordLoc(D->getTemplateKeywordLoc()); |
3774 | | |
3775 | 30 | Owner->addDecl(InstD); |
3776 | | |
3777 | | // Instantiate the members of the class-scope explicit specialization eagerly. |
3778 | | // We don't have support for lazy instantiation of an explicit specialization |
3779 | | // yet, and MSVC eagerly instantiates in this case. |
3780 | | // FIXME: This is wrong in standard C++. |
3781 | 30 | if (D->isThisDeclarationADefinition() && |
3782 | 30 | SemaRef.InstantiateClass(D->getLocation(), InstD, D, TemplateArgs, |
3783 | 18 | TSK_ImplicitInstantiation, |
3784 | 18 | /*Complain=*/true)) |
3785 | 0 | return nullptr; |
3786 | | |
3787 | 30 | return InstD; |
3788 | 30 | } |
3789 | | |
3790 | | Decl *TemplateDeclInstantiator::VisitVarTemplateSpecializationDecl( |
3791 | 57 | VarTemplateSpecializationDecl *D) { |
3792 | | |
3793 | 57 | TemplateArgumentListInfo VarTemplateArgsInfo; |
3794 | 57 | VarTemplateDecl *VarTemplate = D->getSpecializedTemplate(); |
3795 | 57 | assert(VarTemplate && |
3796 | 57 | "A template specialization without specialized template?"); |
3797 | | |
3798 | 0 | VarTemplateDecl *InstVarTemplate = |
3799 | 57 | cast_or_null<VarTemplateDecl>(SemaRef.FindInstantiatedDecl( |
3800 | 57 | D->getLocation(), VarTemplate, TemplateArgs)); |
3801 | 57 | if (!InstVarTemplate) |
3802 | 0 | return nullptr; |
3803 | | |
3804 | | // Substitute the current template arguments. |
3805 | 57 | if (const ASTTemplateArgumentListInfo *TemplateArgsInfo = |
3806 | 57 | D->getTemplateArgsInfo()) { |
3807 | 57 | VarTemplateArgsInfo.setLAngleLoc(TemplateArgsInfo->getLAngleLoc()); |
3808 | 57 | VarTemplateArgsInfo.setRAngleLoc(TemplateArgsInfo->getRAngleLoc()); |
3809 | | |
3810 | 57 | if (SemaRef.SubstTemplateArguments(TemplateArgsInfo->arguments(), |
3811 | 57 | TemplateArgs, VarTemplateArgsInfo)) |
3812 | 0 | return nullptr; |
3813 | 57 | } |
3814 | | |
3815 | | // Check that the template argument list is well-formed for this template. |
3816 | 57 | SmallVector<TemplateArgument, 4> Converted; |
3817 | 57 | if (SemaRef.CheckTemplateArgumentList(InstVarTemplate, D->getLocation(), |
3818 | 57 | VarTemplateArgsInfo, false, Converted, |
3819 | 57 | /*UpdateArgsWithConversions=*/true)) |
3820 | 0 | return nullptr; |
3821 | | |
3822 | | // Check whether we've already seen a declaration of this specialization. |
3823 | 57 | void *InsertPos = nullptr; |
3824 | 57 | VarTemplateSpecializationDecl *PrevDecl = |
3825 | 57 | InstVarTemplate->findSpecialization(Converted, InsertPos); |
3826 | | |
3827 | | // Check whether we've already seen a conflicting instantiation of this |
3828 | | // declaration (for instance, if there was a prior implicit instantiation). |
3829 | 57 | bool Ignored; |
3830 | 57 | if (PrevDecl && SemaRef.CheckSpecializationInstantiationRedecl( |
3831 | 10 | D->getLocation(), D->getSpecializationKind(), PrevDecl, |
3832 | 10 | PrevDecl->getSpecializationKind(), |
3833 | 10 | PrevDecl->getPointOfInstantiation(), Ignored)) |
3834 | 0 | return nullptr; |
3835 | | |
3836 | 57 | return VisitVarTemplateSpecializationDecl( |
3837 | 57 | InstVarTemplate, D, VarTemplateArgsInfo, Converted, PrevDecl); |
3838 | 57 | } |
3839 | | |
3840 | | Decl *TemplateDeclInstantiator::VisitVarTemplateSpecializationDecl( |
3841 | | VarTemplateDecl *VarTemplate, VarDecl *D, |
3842 | | const TemplateArgumentListInfo &TemplateArgsInfo, |
3843 | | ArrayRef<TemplateArgument> Converted, |
3844 | 4.41k | VarTemplateSpecializationDecl *PrevDecl) { |
3845 | | |
3846 | | // Do substitution on the type of the declaration |
3847 | 4.41k | TypeSourceInfo *DI = |
3848 | 4.41k | SemaRef.SubstType(D->getTypeSourceInfo(), TemplateArgs, |
3849 | 4.41k | D->getTypeSpecStartLoc(), D->getDeclName()); |
3850 | 4.41k | if (!DI) |
3851 | 0 | return nullptr; |
3852 | | |
3853 | 4.41k | if (DI->getType()->isFunctionType()) { |
3854 | 0 | SemaRef.Diag(D->getLocation(), diag::err_variable_instantiates_to_function) |
3855 | 0 | << D->isStaticDataMember() << DI->getType(); |
3856 | 0 | return nullptr; |
3857 | 0 | } |
3858 | | |
3859 | | // Build the instantiated declaration |
3860 | 4.41k | VarTemplateSpecializationDecl *Var = VarTemplateSpecializationDecl::Create( |
3861 | 4.41k | SemaRef.Context, Owner, D->getInnerLocStart(), D->getLocation(), |
3862 | 4.41k | VarTemplate, DI->getType(), DI, D->getStorageClass(), Converted); |
3863 | 4.41k | Var->setTemplateArgsInfo(TemplateArgsInfo); |
3864 | 4.41k | if (!PrevDecl) { |
3865 | 4.26k | void *InsertPos = nullptr; |
3866 | 4.26k | VarTemplate->findSpecialization(Converted, InsertPos); |
3867 | 4.26k | VarTemplate->AddSpecialization(Var, InsertPos); |
3868 | 4.26k | } |
3869 | | |
3870 | 4.41k | if (SemaRef.getLangOpts().OpenCL) |
3871 | 2 | SemaRef.deduceOpenCLAddressSpace(Var); |
3872 | | |
3873 | | // Substitute the nested name specifier, if any. |
3874 | 4.41k | if (SubstQualifier(D, Var)) |
3875 | 0 | return nullptr; |
3876 | | |
3877 | 4.41k | SemaRef.BuildVariableInstantiation(Var, D, TemplateArgs, LateAttrs, Owner, |
3878 | 4.41k | StartingScope, false, PrevDecl); |
3879 | | |
3880 | 4.41k | return Var; |
3881 | 4.41k | } |
3882 | | |
3883 | 0 | Decl *TemplateDeclInstantiator::VisitObjCAtDefsFieldDecl(ObjCAtDefsFieldDecl *D) { |
3884 | 0 | llvm_unreachable("@defs is not supported in Objective-C++"); |
3885 | 0 | } |
3886 | | |
3887 | 0 | Decl *TemplateDeclInstantiator::VisitFriendTemplateDecl(FriendTemplateDecl *D) { |
3888 | | // FIXME: We need to be able to instantiate FriendTemplateDecls. |
3889 | 0 | unsigned DiagID = SemaRef.getDiagnostics().getCustomDiagID( |
3890 | 0 | DiagnosticsEngine::Error, |
3891 | 0 | "cannot instantiate %0 yet"); |
3892 | 0 | SemaRef.Diag(D->getLocation(), DiagID) |
3893 | 0 | << D->getDeclKindName(); |
3894 | |
|
3895 | 0 | return nullptr; |
3896 | 0 | } |
3897 | | |
3898 | 0 | Decl *TemplateDeclInstantiator::VisitConceptDecl(ConceptDecl *D) { |
3899 | 0 | llvm_unreachable("Concept definitions cannot reside inside a template"); |
3900 | 0 | } |
3901 | | |
3902 | | Decl * |
3903 | 0 | TemplateDeclInstantiator::VisitRequiresExprBodyDecl(RequiresExprBodyDecl *D) { |
3904 | 0 | return RequiresExprBodyDecl::Create(SemaRef.Context, D->getDeclContext(), |
3905 | 0 | D->getBeginLoc()); |
3906 | 0 | } |
3907 | | |
3908 | 0 | Decl *TemplateDeclInstantiator::VisitDecl(Decl *D) { |
3909 | 0 | llvm_unreachable("Unexpected decl"); |
3910 | 0 | } |
3911 | | |
3912 | | Decl *Sema::SubstDecl(Decl *D, DeclContext *Owner, |
3913 | 794k | const MultiLevelTemplateArgumentList &TemplateArgs) { |
3914 | 794k | TemplateDeclInstantiator Instantiator(*this, Owner, TemplateArgs); |
3915 | 794k | if (D->isInvalidDecl()) |
3916 | 21 | return nullptr; |
3917 | | |
3918 | 794k | Decl *SubstD; |
3919 | 794k | runWithSufficientStackSpace(D->getLocation(), [&] { |
3920 | 794k | SubstD = Instantiator.Visit(D); |
3921 | 794k | }); |
3922 | 794k | return SubstD; |
3923 | 794k | } |
3924 | | |
3925 | | void TemplateDeclInstantiator::adjustForRewrite(RewriteKind RK, |
3926 | | FunctionDecl *Orig, QualType &T, |
3927 | | TypeSourceInfo *&TInfo, |
3928 | 117 | DeclarationNameInfo &NameInfo) { |
3929 | 117 | assert(RK == RewriteKind::RewriteSpaceshipAsEqualEqual); |
3930 | | |
3931 | | // C++2a [class.compare.default]p3: |
3932 | | // the return type is replaced with bool |
3933 | 0 | auto *FPT = T->castAs<FunctionProtoType>(); |
3934 | 117 | T = SemaRef.Context.getFunctionType( |
3935 | 117 | SemaRef.Context.BoolTy, FPT->getParamTypes(), FPT->getExtProtoInfo()); |
3936 | | |
3937 | | // Update the return type in the source info too. The most straightforward |
3938 | | // way is to create new TypeSourceInfo for the new type. Use the location of |
3939 | | // the '= default' as the location of the new type. |
3940 | | // |
3941 | | // FIXME: Set the correct return type when we initially transform the type, |
3942 | | // rather than delaying it to now. |
3943 | 117 | TypeSourceInfo *NewTInfo = |
3944 | 117 | SemaRef.Context.getTrivialTypeSourceInfo(T, Orig->getEndLoc()); |
3945 | 117 | auto OldLoc = TInfo->getTypeLoc().getAsAdjusted<FunctionProtoTypeLoc>(); |
3946 | 117 | assert(OldLoc && "type of function is not a function type?"); |
3947 | 0 | auto NewLoc = NewTInfo->getTypeLoc().castAs<FunctionProtoTypeLoc>(); |
3948 | 264 | for (unsigned I = 0, N = OldLoc.getNumParams(); I != N; ++I147 ) |
3949 | 147 | NewLoc.setParam(I, OldLoc.getParam(I)); |
3950 | 117 | TInfo = NewTInfo; |
3951 | | |
3952 | | // and the declarator-id is replaced with operator== |
3953 | 117 | NameInfo.setName( |
3954 | 117 | SemaRef.Context.DeclarationNames.getCXXOperatorName(OO_EqualEqual)); |
3955 | 117 | } |
3956 | | |
3957 | | FunctionDecl *Sema::SubstSpaceshipAsEqualEqual(CXXRecordDecl *RD, |
3958 | 117 | FunctionDecl *Spaceship) { |
3959 | 117 | if (Spaceship->isInvalidDecl()) |
3960 | 0 | return nullptr; |
3961 | | |
3962 | | // C++2a [class.compare.default]p3: |
3963 | | // an == operator function is declared implicitly [...] with the same |
3964 | | // access and function-definition and in the same class scope as the |
3965 | | // three-way comparison operator function |
3966 | 117 | MultiLevelTemplateArgumentList NoTemplateArgs; |
3967 | 117 | NoTemplateArgs.setKind(TemplateSubstitutionKind::Rewrite); |
3968 | 117 | NoTemplateArgs.addOuterRetainedLevels(RD->getTemplateDepth()); |
3969 | 117 | TemplateDeclInstantiator Instantiator(*this, RD, NoTemplateArgs); |
3970 | 117 | Decl *R; |
3971 | 117 | if (auto *MD = dyn_cast<CXXMethodDecl>(Spaceship)) { |
3972 | 87 | R = Instantiator.VisitCXXMethodDecl( |
3973 | 87 | MD, nullptr, None, |
3974 | 87 | TemplateDeclInstantiator::RewriteKind::RewriteSpaceshipAsEqualEqual); |
3975 | 87 | } else { |
3976 | 30 | assert(Spaceship->getFriendObjectKind() && |
3977 | 30 | "defaulted spaceship is neither a member nor a friend"); |
3978 | | |
3979 | 0 | R = Instantiator.VisitFunctionDecl( |
3980 | 30 | Spaceship, nullptr, |
3981 | 30 | TemplateDeclInstantiator::RewriteKind::RewriteSpaceshipAsEqualEqual); |
3982 | 30 | if (!R) |
3983 | 0 | return nullptr; |
3984 | | |
3985 | 30 | FriendDecl *FD = |
3986 | 30 | FriendDecl::Create(Context, RD, Spaceship->getLocation(), |
3987 | 30 | cast<NamedDecl>(R), Spaceship->getBeginLoc()); |
3988 | 30 | FD->setAccess(AS_public); |
3989 | 30 | RD->addDecl(FD); |
3990 | 30 | } |
3991 | 117 | return cast_or_null<FunctionDecl>(R); |
3992 | 117 | } |
3993 | | |
3994 | | /// Instantiates a nested template parameter list in the current |
3995 | | /// instantiation context. |
3996 | | /// |
3997 | | /// \param L The parameter list to instantiate |
3998 | | /// |
3999 | | /// \returns NULL if there was an error |
4000 | | TemplateParameterList * |
4001 | 362k | TemplateDeclInstantiator::SubstTemplateParams(TemplateParameterList *L) { |
4002 | | // Get errors for all the parameters before bailing out. |
4003 | 362k | bool Invalid = false; |
4004 | | |
4005 | 362k | unsigned N = L->size(); |
4006 | 362k | typedef SmallVector<NamedDecl *, 8> ParamVector; |
4007 | 362k | ParamVector Params; |
4008 | 362k | Params.reserve(N); |
4009 | 630k | for (auto &P : *L) { |
4010 | 630k | NamedDecl *D = cast_or_null<NamedDecl>(Visit(P)); |
4011 | 630k | Params.push_back(D); |
4012 | 630k | Invalid = Invalid || !D || D->isInvalidDecl()630k ; |
4013 | 630k | } |
4014 | | |
4015 | | // Clean up if we had an error. |
4016 | 362k | if (Invalid) |
4017 | 16 | return nullptr; |
4018 | | |
4019 | | // FIXME: Concepts: Substitution into requires clause should only happen when |
4020 | | // checking satisfaction. |
4021 | 362k | Expr *InstRequiresClause = nullptr; |
4022 | 362k | if (Expr *E = L->getRequiresClause()) { |
4023 | 109 | EnterExpressionEvaluationContext ConstantEvaluated( |
4024 | 109 | SemaRef, Sema::ExpressionEvaluationContext::Unevaluated); |
4025 | 109 | ExprResult Res = SemaRef.SubstExpr(E, TemplateArgs); |
4026 | 109 | if (Res.isInvalid() || !Res.isUsable()) { |
4027 | 0 | return nullptr; |
4028 | 0 | } |
4029 | 109 | InstRequiresClause = Res.get(); |
4030 | 109 | } |
4031 | | |
4032 | 362k | TemplateParameterList *InstL |
4033 | 362k | = TemplateParameterList::Create(SemaRef.Context, L->getTemplateLoc(), |
4034 | 362k | L->getLAngleLoc(), Params, |
4035 | 362k | L->getRAngleLoc(), InstRequiresClause); |
4036 | 362k | return InstL; |
4037 | 362k | } |
4038 | | |
4039 | | TemplateParameterList * |
4040 | | Sema::SubstTemplateParams(TemplateParameterList *Params, DeclContext *Owner, |
4041 | 49.4k | const MultiLevelTemplateArgumentList &TemplateArgs) { |
4042 | 49.4k | TemplateDeclInstantiator Instantiator(*this, Owner, TemplateArgs); |
4043 | 49.4k | return Instantiator.SubstTemplateParams(Params); |
4044 | 49.4k | } |
4045 | | |
4046 | | /// Instantiate the declaration of a class template partial |
4047 | | /// specialization. |
4048 | | /// |
4049 | | /// \param ClassTemplate the (instantiated) class template that is partially |
4050 | | // specialized by the instantiation of \p PartialSpec. |
4051 | | /// |
4052 | | /// \param PartialSpec the (uninstantiated) class template partial |
4053 | | /// specialization that we are instantiating. |
4054 | | /// |
4055 | | /// \returns The instantiated partial specialization, if successful; otherwise, |
4056 | | /// NULL to indicate an error. |
4057 | | ClassTemplatePartialSpecializationDecl * |
4058 | | TemplateDeclInstantiator::InstantiateClassTemplatePartialSpecialization( |
4059 | | ClassTemplateDecl *ClassTemplate, |
4060 | 6.97k | ClassTemplatePartialSpecializationDecl *PartialSpec) { |
4061 | | // Create a local instantiation scope for this class template partial |
4062 | | // specialization, which will contain the instantiations of the template |
4063 | | // parameters. |
4064 | 6.97k | LocalInstantiationScope Scope(SemaRef); |
4065 | | |
4066 | | // Substitute into the template parameters of the class template partial |
4067 | | // specialization. |
4068 | 6.97k | TemplateParameterList *TempParams = PartialSpec->getTemplateParameters(); |
4069 | 6.97k | TemplateParameterList *InstParams = SubstTemplateParams(TempParams); |
4070 | 6.97k | if (!InstParams) |
4071 | 0 | return nullptr; |
4072 | | |
4073 | | // Substitute into the template arguments of the class template partial |
4074 | | // specialization. |
4075 | 6.97k | const ASTTemplateArgumentListInfo *TemplArgInfo |
4076 | 6.97k | = PartialSpec->getTemplateArgsAsWritten(); |
4077 | 6.97k | TemplateArgumentListInfo InstTemplateArgs(TemplArgInfo->LAngleLoc, |
4078 | 6.97k | TemplArgInfo->RAngleLoc); |
4079 | 6.97k | if (SemaRef.SubstTemplateArguments(TemplArgInfo->arguments(), TemplateArgs, |
4080 | 6.97k | InstTemplateArgs)) |
4081 | 0 | return nullptr; |
4082 | | |
4083 | | // Check that the template argument list is well-formed for this |
4084 | | // class template. |
4085 | 6.97k | SmallVector<TemplateArgument, 4> Converted; |
4086 | 6.97k | if (SemaRef.CheckTemplateArgumentList(ClassTemplate, |
4087 | 6.97k | PartialSpec->getLocation(), |
4088 | 6.97k | InstTemplateArgs, |
4089 | 6.97k | false, |
4090 | 6.97k | Converted)) |
4091 | 0 | return nullptr; |
4092 | | |
4093 | | // Check these arguments are valid for a template partial specialization. |
4094 | 6.97k | if (SemaRef.CheckTemplatePartialSpecializationArgs( |
4095 | 6.97k | PartialSpec->getLocation(), ClassTemplate, InstTemplateArgs.size(), |
4096 | 6.97k | Converted)) |
4097 | 5 | return nullptr; |
4098 | | |
4099 | | // Figure out where to insert this class template partial specialization |
4100 | | // in the member template's set of class template partial specializations. |
4101 | 6.97k | void *InsertPos = nullptr; |
4102 | 6.97k | ClassTemplateSpecializationDecl *PrevDecl |
4103 | 6.97k | = ClassTemplate->findPartialSpecialization(Converted, InstParams, |
4104 | 6.97k | InsertPos); |
4105 | | |
4106 | | // Build the canonical type that describes the converted template |
4107 | | // arguments of the class template partial specialization. |
4108 | 6.97k | QualType CanonType |
4109 | 6.97k | = SemaRef.Context.getTemplateSpecializationType(TemplateName(ClassTemplate), |
4110 | 6.97k | Converted); |
4111 | | |
4112 | | // Build the fully-sugared type for this class template |
4113 | | // specialization as the user wrote in the specialization |
4114 | | // itself. This means that we'll pretty-print the type retrieved |
4115 | | // from the specialization's declaration the way that the user |
4116 | | // actually wrote the specialization, rather than formatting the |
4117 | | // name based on the "canonical" representation used to store the |
4118 | | // template arguments in the specialization. |
4119 | 6.97k | TypeSourceInfo *WrittenTy |
4120 | 6.97k | = SemaRef.Context.getTemplateSpecializationTypeInfo( |
4121 | 6.97k | TemplateName(ClassTemplate), |
4122 | 6.97k | PartialSpec->getLocation(), |
4123 | 6.97k | InstTemplateArgs, |
4124 | 6.97k | CanonType); |
4125 | | |
4126 | 6.97k | if (PrevDecl) { |
4127 | | // We've already seen a partial specialization with the same template |
4128 | | // parameters and template arguments. This can happen, for example, when |
4129 | | // substituting the outer template arguments ends up causing two |
4130 | | // class template partial specializations of a member class template |
4131 | | // to have identical forms, e.g., |
4132 | | // |
4133 | | // template<typename T, typename U> |
4134 | | // struct Outer { |
4135 | | // template<typename X, typename Y> struct Inner; |
4136 | | // template<typename Y> struct Inner<T, Y>; |
4137 | | // template<typename Y> struct Inner<U, Y>; |
4138 | | // }; |
4139 | | // |
4140 | | // Outer<int, int> outer; // error: the partial specializations of Inner |
4141 | | // // have the same signature. |
4142 | 2 | SemaRef.Diag(PartialSpec->getLocation(), diag::err_partial_spec_redeclared) |
4143 | 2 | << WrittenTy->getType(); |
4144 | 2 | SemaRef.Diag(PrevDecl->getLocation(), diag::note_prev_partial_spec_here) |
4145 | 2 | << SemaRef.Context.getTypeDeclType(PrevDecl); |
4146 | 2 | return nullptr; |
4147 | 2 | } |
4148 | | |
4149 | | |
4150 | | // Create the class template partial specialization declaration. |
4151 | 6.97k | ClassTemplatePartialSpecializationDecl *InstPartialSpec = |
4152 | 6.97k | ClassTemplatePartialSpecializationDecl::Create( |
4153 | 6.97k | SemaRef.Context, PartialSpec->getTagKind(), Owner, |
4154 | 6.97k | PartialSpec->getBeginLoc(), PartialSpec->getLocation(), InstParams, |
4155 | 6.97k | ClassTemplate, Converted, InstTemplateArgs, CanonType, nullptr); |
4156 | | // Substitute the nested name specifier, if any. |
4157 | 6.97k | if (SubstQualifier(PartialSpec, InstPartialSpec)) |
4158 | 0 | return nullptr; |
4159 | | |
4160 | 6.97k | InstPartialSpec->setInstantiatedFromMember(PartialSpec); |
4161 | 6.97k | InstPartialSpec->setTypeAsWritten(WrittenTy); |
4162 | | |
4163 | | // Check the completed partial specialization. |
4164 | 6.97k | SemaRef.CheckTemplatePartialSpecialization(InstPartialSpec); |
4165 | | |
4166 | | // Add this partial specialization to the set of class template partial |
4167 | | // specializations. |
4168 | 6.97k | ClassTemplate->AddPartialSpecialization(InstPartialSpec, |
4169 | 6.97k | /*InsertPos=*/nullptr); |
4170 | 6.97k | return InstPartialSpec; |
4171 | 6.97k | } |
4172 | | |
4173 | | /// Instantiate the declaration of a variable template partial |
4174 | | /// specialization. |
4175 | | /// |
4176 | | /// \param VarTemplate the (instantiated) variable template that is partially |
4177 | | /// specialized by the instantiation of \p PartialSpec. |
4178 | | /// |
4179 | | /// \param PartialSpec the (uninstantiated) variable template partial |
4180 | | /// specialization that we are instantiating. |
4181 | | /// |
4182 | | /// \returns The instantiated partial specialization, if successful; otherwise, |
4183 | | /// NULL to indicate an error. |
4184 | | VarTemplatePartialSpecializationDecl * |
4185 | | TemplateDeclInstantiator::InstantiateVarTemplatePartialSpecialization( |
4186 | | VarTemplateDecl *VarTemplate, |
4187 | 50 | VarTemplatePartialSpecializationDecl *PartialSpec) { |
4188 | | // Create a local instantiation scope for this variable template partial |
4189 | | // specialization, which will contain the instantiations of the template |
4190 | | // parameters. |
4191 | 50 | LocalInstantiationScope Scope(SemaRef); |
4192 | | |
4193 | | // Substitute into the template parameters of the variable template partial |
4194 | | // specialization. |
4195 | 50 | TemplateParameterList *TempParams = PartialSpec->getTemplateParameters(); |
4196 | 50 | TemplateParameterList *InstParams = SubstTemplateParams(TempParams); |
4197 | 50 | if (!InstParams) |
4198 | 0 | return nullptr; |
4199 | | |
4200 | | // Substitute into the template arguments of the variable template partial |
4201 | | // specialization. |
4202 | 50 | const ASTTemplateArgumentListInfo *TemplArgInfo |
4203 | 50 | = PartialSpec->getTemplateArgsAsWritten(); |
4204 | 50 | TemplateArgumentListInfo InstTemplateArgs(TemplArgInfo->LAngleLoc, |
4205 | 50 | TemplArgInfo->RAngleLoc); |
4206 | 50 | if (SemaRef.SubstTemplateArguments(TemplArgInfo->arguments(), TemplateArgs, |
4207 | 50 | InstTemplateArgs)) |
4208 | 0 | return nullptr; |
4209 | | |
4210 | | // Check that the template argument list is well-formed for this |
4211 | | // class template. |
4212 | 50 | SmallVector<TemplateArgument, 4> Converted; |
4213 | 50 | if (SemaRef.CheckTemplateArgumentList(VarTemplate, PartialSpec->getLocation(), |
4214 | 50 | InstTemplateArgs, false, Converted)) |
4215 | 1 | return nullptr; |
4216 | | |
4217 | | // Check these arguments are valid for a template partial specialization. |
4218 | 49 | if (SemaRef.CheckTemplatePartialSpecializationArgs( |
4219 | 49 | PartialSpec->getLocation(), VarTemplate, InstTemplateArgs.size(), |
4220 | 49 | Converted)) |
4221 | 0 | return nullptr; |
4222 | | |
4223 | | // Figure out where to insert this variable template partial specialization |
4224 | | // in the member template's set of variable template partial specializations. |
4225 | 49 | void *InsertPos = nullptr; |
4226 | 49 | VarTemplateSpecializationDecl *PrevDecl = |
4227 | 49 | VarTemplate->findPartialSpecialization(Converted, InstParams, InsertPos); |
4228 | | |
4229 | | // Build the canonical type that describes the converted template |
4230 | | // arguments of the variable template partial specialization. |
4231 | 49 | QualType CanonType = SemaRef.Context.getTemplateSpecializationType( |
4232 | 49 | TemplateName(VarTemplate), Converted); |
4233 | | |
4234 | | // Build the fully-sugared type for this variable template |
4235 | | // specialization as the user wrote in the specialization |
4236 | | // itself. This means that we'll pretty-print the type retrieved |
4237 | | // from the specialization's declaration the way that the user |
4238 | | // actually wrote the specialization, rather than formatting the |
4239 | | // name based on the "canonical" representation used to store the |
4240 | | // template arguments in the specialization. |
4241 | 49 | TypeSourceInfo *WrittenTy = SemaRef.Context.getTemplateSpecializationTypeInfo( |
4242 | 49 | TemplateName(VarTemplate), PartialSpec->getLocation(), InstTemplateArgs, |
4243 | 49 | CanonType); |
4244 | | |
4245 | 49 | if (PrevDecl) { |
4246 | | // We've already seen a partial specialization with the same template |
4247 | | // parameters and template arguments. This can happen, for example, when |
4248 | | // substituting the outer template arguments ends up causing two |
4249 | | // variable template partial specializations of a member variable template |
4250 | | // to have identical forms, e.g., |
4251 | | // |
4252 | | // template<typename T, typename U> |
4253 | | // struct Outer { |
4254 | | // template<typename X, typename Y> pair<X,Y> p; |
4255 | | // template<typename Y> pair<T, Y> p; |
4256 | | // template<typename Y> pair<U, Y> p; |
4257 | | // }; |
4258 | | // |
4259 | | // Outer<int, int> outer; // error: the partial specializations of Inner |
4260 | | // // have the same signature. |
4261 | 0 | SemaRef.Diag(PartialSpec->getLocation(), |
4262 | 0 | diag::err_var_partial_spec_redeclared) |
4263 | 0 | << WrittenTy->getType(); |
4264 | 0 | SemaRef.Diag(PrevDecl->getLocation(), |
4265 | 0 | diag::note_var_prev_partial_spec_here); |
4266 | 0 | return nullptr; |
4267 | 0 | } |
4268 | | |
4269 | | // Do substitution on the type of the declaration |
4270 | 49 | TypeSourceInfo *DI = SemaRef.SubstType( |
4271 | 49 | PartialSpec->getTypeSourceInfo(), TemplateArgs, |
4272 | 49 | PartialSpec->getTypeSpecStartLoc(), PartialSpec->getDeclName()); |
4273 | 49 | if (!DI) |
4274 | 0 | return nullptr; |
4275 | | |
4276 | 49 | if (DI->getType()->isFunctionType()) { |
4277 | 0 | SemaRef.Diag(PartialSpec->getLocation(), |
4278 | 0 | diag::err_variable_instantiates_to_function) |
4279 | 0 | << PartialSpec->isStaticDataMember() << DI->getType(); |
4280 | 0 | return nullptr; |
4281 | 0 | } |
4282 | | |
4283 | | // Create the variable template partial specialization declaration. |
4284 | 49 | VarTemplatePartialSpecializationDecl *InstPartialSpec = |
4285 | 49 | VarTemplatePartialSpecializationDecl::Create( |
4286 | 49 | SemaRef.Context, Owner, PartialSpec->getInnerLocStart(), |
4287 | 49 | PartialSpec->getLocation(), InstParams, VarTemplate, DI->getType(), |
4288 | 49 | DI, PartialSpec->getStorageClass(), Converted, InstTemplateArgs); |
4289 | | |
4290 | | // Substitute the nested name specifier, if any. |
4291 | 49 | if (SubstQualifier(PartialSpec, InstPartialSpec)) |
4292 | 0 | return nullptr; |
4293 | | |
4294 | 49 | InstPartialSpec->setInstantiatedFromMember(PartialSpec); |
4295 | 49 | InstPartialSpec->setTypeAsWritten(WrittenTy); |
4296 | | |
4297 | | // Check the completed partial specialization. |
4298 | 49 | SemaRef.CheckTemplatePartialSpecialization(InstPartialSpec); |
4299 | | |
4300 | | // Add this partial specialization to the set of variable template partial |
4301 | | // specializations. The instantiation of the initializer is not necessary. |
4302 | 49 | VarTemplate->AddPartialSpecialization(InstPartialSpec, /*InsertPos=*/nullptr); |
4303 | | |
4304 | 49 | SemaRef.BuildVariableInstantiation(InstPartialSpec, PartialSpec, TemplateArgs, |
4305 | 49 | LateAttrs, Owner, StartingScope); |
4306 | | |
4307 | 49 | return InstPartialSpec; |
4308 | 49 | } |
4309 | | |
4310 | | TypeSourceInfo* |
4311 | | TemplateDeclInstantiator::SubstFunctionType(FunctionDecl *D, |
4312 | 1.32M | SmallVectorImpl<ParmVarDecl *> &Params) { |
4313 | 1.32M | TypeSourceInfo *OldTInfo = D->getTypeSourceInfo(); |
4314 | 1.32M | assert(OldTInfo && "substituting function without type source info"); |
4315 | 0 | assert(Params.empty() && "parameter vector is non-empty at start"); |
4316 | | |
4317 | 0 | CXXRecordDecl *ThisContext = nullptr; |
4318 | 1.32M | Qualifiers ThisTypeQuals; |
4319 | 1.32M | if (CXXMethodDecl *Method = dyn_cast<CXXMethodDecl>(D)) { |
4320 | 1.12M | ThisContext = cast<CXXRecordDecl>(Owner); |
4321 | 1.12M | ThisTypeQuals = Method->getMethodQualifiers(); |
4322 | 1.12M | } |
4323 | | |
4324 | 1.32M | TypeSourceInfo *NewTInfo |
4325 | 1.32M | = SemaRef.SubstFunctionDeclType(OldTInfo, TemplateArgs, |
4326 | 1.32M | D->getTypeSpecStartLoc(), |
4327 | 1.32M | D->getDeclName(), |
4328 | 1.32M | ThisContext, ThisTypeQuals); |
4329 | 1.32M | if (!NewTInfo) |
4330 | 58.4k | return nullptr; |
4331 | | |
4332 | 1.27M | TypeLoc OldTL = OldTInfo->getTypeLoc().IgnoreParens(); |
4333 | 1.27M | if (FunctionProtoTypeLoc OldProtoLoc = OldTL.getAs<FunctionProtoTypeLoc>()) { |
4334 | 1.27M | if (NewTInfo != OldTInfo) { |
4335 | | // Get parameters from the new type info. |
4336 | 1.09M | TypeLoc NewTL = NewTInfo->getTypeLoc().IgnoreParens(); |
4337 | 1.09M | FunctionProtoTypeLoc NewProtoLoc = NewTL.castAs<FunctionProtoTypeLoc>(); |
4338 | 1.09M | unsigned NewIdx = 0; |
4339 | 1.09M | for (unsigned OldIdx = 0, NumOldParams = OldProtoLoc.getNumParams(); |
4340 | 2.57M | OldIdx != NumOldParams; ++OldIdx1.47M ) { |
4341 | 1.47M | ParmVarDecl *OldParam = OldProtoLoc.getParam(OldIdx); |
4342 | 1.47M | if (!OldParam) |
4343 | 1 | return nullptr; |
4344 | | |
4345 | 1.47M | LocalInstantiationScope *Scope = SemaRef.CurrentInstantiationScope; |
4346 | | |
4347 | 1.47M | Optional<unsigned> NumArgumentsInExpansion; |
4348 | 1.47M | if (OldParam->isParameterPack()) |
4349 | 24.4k | NumArgumentsInExpansion = |
4350 | 24.4k | SemaRef.getNumArgumentsInExpansion(OldParam->getType(), |
4351 | 24.4k | TemplateArgs); |
4352 | 1.47M | if (!NumArgumentsInExpansion) { |
4353 | | // Simple case: normal parameter, or a parameter pack that's |
4354 | | // instantiated to a (still-dependent) parameter pack. |
4355 | 1.46M | ParmVarDecl *NewParam = NewProtoLoc.getParam(NewIdx++); |
4356 | 1.46M | Params.push_back(NewParam); |
4357 | 1.46M | Scope->InstantiatedLocal(OldParam, NewParam); |
4358 | 1.46M | } else { |
4359 | | // Parameter pack expansion: make the instantiation an argument pack. |
4360 | 9.05k | Scope->MakeInstantiatedLocalArgPack(OldParam); |
4361 | 22.5k | for (unsigned I = 0; I != *NumArgumentsInExpansion; ++I13.5k ) { |
4362 | 13.5k | ParmVarDecl *NewParam = NewProtoLoc.getParam(NewIdx++); |
4363 | 13.5k | Params.push_back(NewParam); |
4364 | 13.5k | Scope->InstantiatedLocalPackArg(OldParam, NewParam); |
4365 | 13.5k | } |
4366 | 9.05k | } |
4367 | 1.47M | } |
4368 | 1.09M | } else { |
4369 | | // The function type itself was not dependent and therefore no |
4370 | | // substitution occurred. However, we still need to instantiate |
4371 | | // the function parameters themselves. |
4372 | 172k | const FunctionProtoType *OldProto = |
4373 | 172k | cast<FunctionProtoType>(OldProtoLoc.getType()); |
4374 | 172k | for (unsigned i = 0, i_end = OldProtoLoc.getNumParams(); i != i_end; |
4375 | 172k | ++i2 ) { |
4376 | 2 | ParmVarDecl *OldParam = OldProtoLoc.getParam(i); |
4377 | 2 | if (!OldParam) { |
4378 | 2 | Params.push_back(SemaRef.BuildParmVarDeclForTypedef( |
4379 | 2 | D, D->getLocation(), OldProto->getParamType(i))); |
4380 | 2 | continue; |
4381 | 2 | } |
4382 | | |
4383 | 0 | ParmVarDecl *Parm = |
4384 | 0 | cast_or_null<ParmVarDecl>(VisitParmVarDecl(OldParam)); |
4385 | 0 | if (!Parm) |
4386 | 0 | return nullptr; |
4387 | 0 | Params.push_back(Parm); |
4388 | 0 | } |
4389 | 172k | } |
4390 | 1.27M | } else { |
4391 | | // If the type of this function, after ignoring parentheses, is not |
4392 | | // *directly* a function type, then we're instantiating a function that |
4393 | | // was declared via a typedef or with attributes, e.g., |
4394 | | // |
4395 | | // typedef int functype(int, int); |
4396 | | // functype func; |
4397 | | // int __cdecl meth(int, int); |
4398 | | // |
4399 | | // In this case, we'll just go instantiate the ParmVarDecls that we |
4400 | | // synthesized in the method declaration. |
4401 | 89 | SmallVector<QualType, 4> ParamTypes; |
4402 | 89 | Sema::ExtParameterInfoBuilder ExtParamInfos; |
4403 | 89 | if (SemaRef.SubstParmTypes(D->getLocation(), D->parameters(), nullptr, |
4404 | 89 | TemplateArgs, ParamTypes, &Params, |
4405 | 89 | ExtParamInfos)) |
4406 | 0 | return nullptr; |
4407 | 89 | } |
4408 | | |
4409 | 1.27M | return NewTInfo; |
4410 | 1.27M | } |
4411 | | |
4412 | | /// Introduce the instantiated function parameters into the local |
4413 | | /// instantiation scope, and set the parameter names to those used |
4414 | | /// in the template. |
4415 | | bool Sema::addInstantiatedParametersToScope( |
4416 | | FunctionDecl *Function, const FunctionDecl *PatternDecl, |
4417 | | LocalInstantiationScope &Scope, |
4418 | 228k | const MultiLevelTemplateArgumentList &TemplateArgs) { |
4419 | 228k | unsigned FParamIdx = 0; |
4420 | 487k | for (unsigned I = 0, N = PatternDecl->getNumParams(); I != N; ++I259k ) { |
4421 | 259k | const ParmVarDecl *PatternParam = PatternDecl->getParamDecl(I); |
4422 | 259k | if (!PatternParam->isParameterPack()) { |
4423 | | // Simple case: not a parameter pack. |
4424 | 251k | assert(FParamIdx < Function->getNumParams()); |
4425 | 0 | ParmVarDecl *FunctionParam = Function->getParamDecl(FParamIdx); |
4426 | 251k | FunctionParam->setDeclName(PatternParam->getDeclName()); |
4427 | | // If the parameter's type is not dependent, update it to match the type |
4428 | | // in the pattern. They can differ in top-level cv-qualifiers, and we want |
4429 | | // the pattern's type here. If the type is dependent, they can't differ, |
4430 | | // per core issue 1668. Substitute into the type from the pattern, in case |
4431 | | // it's instantiation-dependent. |
4432 | | // FIXME: Updating the type to work around this is at best fragile. |
4433 | 251k | if (!PatternDecl->getType()->isDependentType()) { |
4434 | 6.43k | QualType T = SubstType(PatternParam->getType(), TemplateArgs, |
4435 | 6.43k | FunctionParam->getLocation(), |
4436 | 6.43k | FunctionParam->getDeclName()); |
4437 | 6.43k | if (T.isNull()) |
4438 | 0 | return true; |
4439 | 6.43k | FunctionParam->setType(T); |
4440 | 6.43k | } |
4441 | | |
4442 | 251k | Scope.InstantiatedLocal(PatternParam, FunctionParam); |
4443 | 251k | ++FParamIdx; |
4444 | 251k | continue; |
4445 | 251k | } |
4446 | | |
4447 | | // Expand the parameter pack. |
4448 | 7.24k | Scope.MakeInstantiatedLocalArgPack(PatternParam); |
4449 | 7.24k | Optional<unsigned> NumArgumentsInExpansion = |
4450 | 7.24k | getNumArgumentsInExpansion(PatternParam->getType(), TemplateArgs); |
4451 | 7.24k | if (NumArgumentsInExpansion) { |
4452 | 7.24k | QualType PatternType = |
4453 | 7.24k | PatternParam->getType()->castAs<PackExpansionType>()->getPattern(); |
4454 | 17.8k | for (unsigned Arg = 0; Arg < *NumArgumentsInExpansion; ++Arg10.5k ) { |
4455 | 10.5k | ParmVarDecl *FunctionParam = Function->getParamDecl(FParamIdx); |
4456 | 10.5k | FunctionParam->setDeclName(PatternParam->getDeclName()); |
4457 | 10.5k | if (!PatternDecl->getType()->isDependentType()) { |
4458 | 0 | Sema::ArgumentPackSubstitutionIndexRAII SubstIndex(*this, Arg); |
4459 | 0 | QualType T = |
4460 | 0 | SubstType(PatternType, TemplateArgs, FunctionParam->getLocation(), |
4461 | 0 | FunctionParam->getDeclName()); |
4462 | 0 | if (T.isNull()) |
4463 | 0 | return true; |
4464 | 0 | FunctionParam->setType(T); |
4465 | 0 | } |
4466 | | |
4467 | 10.5k | Scope.InstantiatedLocalPackArg(PatternParam, FunctionParam); |
4468 | 10.5k | ++FParamIdx; |
4469 | 10.5k | } |
4470 | 7.24k | } |
4471 | 7.24k | } |
4472 | | |
4473 | 228k | return false; |
4474 | 228k | } |
4475 | | |
4476 | | bool Sema::InstantiateDefaultArgument(SourceLocation CallLoc, FunctionDecl *FD, |
4477 | 8.69k | ParmVarDecl *Param) { |
4478 | 8.69k | assert(Param->hasUninstantiatedDefaultArg()); |
4479 | 0 | Expr *UninstExpr = Param->getUninstantiatedDefaultArg(); |
4480 | | |
4481 | 8.69k | EnterExpressionEvaluationContext EvalContext( |
4482 | 8.69k | *this, ExpressionEvaluationContext::PotentiallyEvaluated, Param); |
4483 | | |
4484 | | // Instantiate the expression. |
4485 | | // |
4486 | | // FIXME: Pass in a correct Pattern argument, otherwise |
4487 | | // getTemplateInstantiationArgs uses the lexical context of FD, e.g. |
4488 | | // |
4489 | | // template<typename T> |
4490 | | // struct A { |
4491 | | // static int FooImpl(); |
4492 | | // |
4493 | | // template<typename Tp> |
4494 | | // // bug: default argument A<T>::FooImpl() is evaluated with 2-level |
4495 | | // // template argument list [[T], [Tp]], should be [[Tp]]. |
4496 | | // friend A<Tp> Foo(int a); |
4497 | | // }; |
4498 | | // |
4499 | | // template<typename T> |
4500 | | // A<T> Foo(int a = A<T>::FooImpl()); |
4501 | 8.69k | MultiLevelTemplateArgumentList TemplateArgs |
4502 | 8.69k | = getTemplateInstantiationArgs(FD, nullptr, /*RelativeToPrimary=*/true); |
4503 | | |
4504 | 8.69k | InstantiatingTemplate Inst(*this, CallLoc, Param, |
4505 | 8.69k | TemplateArgs.getInnermost()); |
4506 | 8.69k | if (Inst.isInvalid()) |
4507 | 1 | return true; |
4508 | 8.69k | if (Inst.isAlreadyInstantiating()) { |
4509 | 1 | Diag(Param->getBeginLoc(), diag::err_recursive_default_argument) << FD; |
4510 | 1 | Param->setInvalidDecl(); |
4511 | 1 | return true; |
4512 | 1 | } |
4513 | | |
4514 | 8.69k | ExprResult Result; |
4515 | 8.69k | { |
4516 | | // C++ [dcl.fct.default]p5: |
4517 | | // The names in the [default argument] expression are bound, and |
4518 | | // the semantic constraints are checked, at the point where the |
4519 | | // default argument expression appears. |
4520 | 8.69k | ContextRAII SavedContext(*this, FD); |
4521 | 8.69k | LocalInstantiationScope Local(*this); |
4522 | | |
4523 | 8.69k | FunctionDecl *Pattern = FD->getTemplateInstantiationPattern( |
4524 | 8.69k | /*ForDefinition*/ false); |
4525 | 8.69k | if (addInstantiatedParametersToScope(FD, Pattern, Local, TemplateArgs)) |
4526 | 0 | return true; |
4527 | | |
4528 | 8.69k | runWithSufficientStackSpace(CallLoc, [&] { |
4529 | 8.69k | Result = SubstInitializer(UninstExpr, TemplateArgs, |
4530 | 8.69k | /*DirectInit*/false); |
4531 | 8.69k | }); |
4532 | 8.69k | } |
4533 | 8.69k | if (Result.isInvalid()) |
4534 | 155 | return true; |
4535 | | |
4536 | | // Check the expression as an initializer for the parameter. |
4537 | 8.54k | InitializedEntity Entity |
4538 | 8.54k | = InitializedEntity::InitializeParameter(Context, Param); |
4539 | 8.54k | InitializationKind Kind = InitializationKind::CreateCopy( |
4540 | 8.54k | Param->getLocation(), |
4541 | 8.54k | /*FIXME:EqualLoc*/ UninstExpr->getBeginLoc()); |
4542 | 8.54k | Expr *ResultE = Result.getAs<Expr>(); |
4543 | | |
4544 | 8.54k | InitializationSequence InitSeq(*this, Entity, Kind, ResultE); |
4545 | 8.54k | Result = InitSeq.Perform(*this, Entity, Kind, ResultE); |
4546 | 8.54k | if (Result.isInvalid()) |
4547 | 25 | return true; |
4548 | | |
4549 | 8.51k | Result = |
4550 | 8.51k | ActOnFinishFullExpr(Result.getAs<Expr>(), Param->getOuterLocStart(), |
4551 | 8.51k | /*DiscardedValue*/ false); |
4552 | 8.51k | if (Result.isInvalid()) |
4553 | 0 | return true; |
4554 | | |
4555 | | // Remember the instantiated default argument. |
4556 | 8.51k | Param->setDefaultArg(Result.getAs<Expr>()); |
4557 | 8.51k | if (ASTMutationListener *L = getASTMutationListener()) |
4558 | 498 | L->DefaultArgumentInstantiated(Param); |
4559 | | |
4560 | 8.51k | return false; |
4561 | 8.51k | } |
4562 | | |
4563 | | void Sema::InstantiateExceptionSpec(SourceLocation PointOfInstantiation, |
4564 | 7.61k | FunctionDecl *Decl) { |
4565 | 7.61k | const FunctionProtoType *Proto = Decl->getType()->castAs<FunctionProtoType>(); |
4566 | 7.61k | if (Proto->getExceptionSpecType() != EST_Uninstantiated) |
4567 | 0 | return; |
4568 | | |
4569 | 7.61k | InstantiatingTemplate Inst(*this, PointOfInstantiation, Decl, |
4570 | 7.61k | InstantiatingTemplate::ExceptionSpecification()); |
4571 | 7.61k | if (Inst.isInvalid()) { |
4572 | | // We hit the instantiation depth limit. Clear the exception specification |
4573 | | // so that our callers don't have to cope with EST_Uninstantiated. |
4574 | 0 | UpdateExceptionSpec(Decl, EST_None); |
4575 | 0 | return; |
4576 | 0 | } |
4577 | 7.61k | if (Inst.isAlreadyInstantiating()) { |
4578 | | // This exception specification indirectly depends on itself. Reject. |
4579 | | // FIXME: Corresponding rule in the standard? |
4580 | 10 | Diag(PointOfInstantiation, diag::err_exception_spec_cycle) << Decl; |
4581 | 10 | UpdateExceptionSpec(Decl, EST_None); |
4582 | 10 | return; |
4583 | 10 | } |
4584 | | |
4585 | | // Enter the scope of this instantiation. We don't use |
4586 | | // PushDeclContext because we don't have a scope. |
4587 | 7.60k | Sema::ContextRAII savedContext(*this, Decl); |
4588 | 7.60k | LocalInstantiationScope Scope(*this); |
4589 | | |
4590 | 7.60k | MultiLevelTemplateArgumentList TemplateArgs = |
4591 | 7.60k | getTemplateInstantiationArgs(Decl, nullptr, /*RelativeToPrimary*/true); |
4592 | | |
4593 | | // FIXME: We can't use getTemplateInstantiationPattern(false) in general |
4594 | | // here, because for a non-defining friend declaration in a class template, |
4595 | | // we don't store enough information to map back to the friend declaration in |
4596 | | // the template. |
4597 | 7.60k | FunctionDecl *Template = Proto->getExceptionSpecTemplate(); |
4598 | 7.60k | if (addInstantiatedParametersToScope(Decl, Template, Scope, TemplateArgs)) { |
4599 | 0 | UpdateExceptionSpec(Decl, EST_None); |
4600 | 0 | return; |
4601 | 0 | } |
4602 | | |
4603 | 7.60k | SubstExceptionSpec(Decl, Template->getType()->castAs<FunctionProtoType>(), |
4604 | 7.60k | TemplateArgs); |
4605 | 7.60k | } |
4606 | | |
4607 | | /// Initializes the common fields of an instantiation function |
4608 | | /// declaration (New) from the corresponding fields of its template (Tmpl). |
4609 | | /// |
4610 | | /// \returns true if there was an error |
4611 | | bool |
4612 | | TemplateDeclInstantiator::InitFunctionInstantiation(FunctionDecl *New, |
4613 | 1.27M | FunctionDecl *Tmpl) { |
4614 | 1.27M | New->setImplicit(Tmpl->isImplicit()); |
4615 | | |
4616 | | // Forward the mangling number from the template to the instantiated decl. |
4617 | 1.27M | SemaRef.Context.setManglingNumber(New, |
4618 | 1.27M | SemaRef.Context.getManglingNumber(Tmpl)); |
4619 | | |
4620 | | // If we are performing substituting explicitly-specified template arguments |
4621 | | // or deduced template arguments into a function template and we reach this |
4622 | | // point, we are now past the point where SFINAE applies and have committed |
4623 | | // to keeping the new function template specialization. We therefore |
4624 | | // convert the active template instantiation for the function template |
4625 | | // into a template instantiation for this specific function template |
4626 | | // specialization, which is not a SFINAE context, so that we diagnose any |
4627 | | // further errors in the declaration itself. |
4628 | | // |
4629 | | // FIXME: This is a hack. |
4630 | 1.27M | typedef Sema::CodeSynthesisContext ActiveInstType; |
4631 | 1.27M | ActiveInstType &ActiveInst = SemaRef.CodeSynthesisContexts.back(); |
4632 | 1.27M | if (ActiveInst.Kind == ActiveInstType::ExplicitTemplateArgumentSubstitution || |
4633 | 1.27M | ActiveInst.Kind == ActiveInstType::DeducedTemplateArgumentSubstitution1.26M ) { |
4634 | 291k | if (FunctionTemplateDecl *FunTmpl |
4635 | 291k | = dyn_cast<FunctionTemplateDecl>(ActiveInst.Entity)) { |
4636 | 291k | assert(FunTmpl->getTemplatedDecl() == Tmpl && |
4637 | 291k | "Deduction from the wrong function template?"); |
4638 | 0 | (void) FunTmpl; |
4639 | 291k | SemaRef.InstantiatingSpecializations.erase( |
4640 | 291k | {ActiveInst.Entity->getCanonicalDecl(), ActiveInst.Kind}); |
4641 | 291k | atTemplateEnd(SemaRef.TemplateInstCallbacks, SemaRef, ActiveInst); |
4642 | 291k | ActiveInst.Kind = ActiveInstType::TemplateInstantiation; |
4643 | 291k | ActiveInst.Entity = New; |
4644 | 291k | atTemplateBegin(SemaRef.TemplateInstCallbacks, SemaRef, ActiveInst); |
4645 | 291k | } |
4646 | 291k | } |
4647 | | |
4648 | 0 | const FunctionProtoType *Proto = Tmpl->getType()->getAs<FunctionProtoType>(); |
4649 | 1.27M | assert(Proto && "Function template without prototype?"); |
4650 | | |
4651 | 1.27M | if (Proto->hasExceptionSpec() || Proto->getNoReturnAttr()759k ) { |
4652 | 511k | FunctionProtoType::ExtProtoInfo EPI = Proto->getExtProtoInfo(); |
4653 | | |
4654 | | // DR1330: In C++11, defer instantiation of a non-trivial |
4655 | | // exception specification. |
4656 | | // DR1484: Local classes and their members are instantiated along with the |
4657 | | // containing function. |
4658 | 511k | if (SemaRef.getLangOpts().CPlusPlus11 && |
4659 | 511k | EPI.ExceptionSpec.Type != EST_None511k && |
4660 | 511k | EPI.ExceptionSpec.Type != EST_DynamicNone511k && |
4661 | 511k | EPI.ExceptionSpec.Type != EST_BasicNoexcept511k && |
4662 | 511k | !Tmpl->isInLocalScopeForInstantiation()73.6k ) { |
4663 | 73.6k | FunctionDecl *ExceptionSpecTemplate = Tmpl; |
4664 | 73.6k | if (EPI.ExceptionSpec.Type == EST_Uninstantiated) |
4665 | 9.03k | ExceptionSpecTemplate = EPI.ExceptionSpec.SourceTemplate; |
4666 | 73.6k | ExceptionSpecificationType NewEST = EST_Uninstantiated; |
4667 | 73.6k | if (EPI.ExceptionSpec.Type == EST_Unevaluated) |
4668 | 0 | NewEST = EST_Unevaluated; |
4669 | | |
4670 | | // Mark the function has having an uninstantiated exception specification. |
4671 | 73.6k | const FunctionProtoType *NewProto |
4672 | 73.6k | = New->getType()->getAs<FunctionProtoType>(); |
4673 | 73.6k | assert(NewProto && "Template instantiation without function prototype?"); |
4674 | 0 | EPI = NewProto->getExtProtoInfo(); |
4675 | 73.6k | EPI.ExceptionSpec.Type = NewEST; |
4676 | 73.6k | EPI.ExceptionSpec.SourceDecl = New; |
4677 | 73.6k | EPI.ExceptionSpec.SourceTemplate = ExceptionSpecTemplate; |
4678 | 73.6k | New->setType(SemaRef.Context.getFunctionType( |
4679 | 73.6k | NewProto->getReturnType(), NewProto->getParamTypes(), EPI)); |
4680 | 437k | } else { |
4681 | 437k | Sema::ContextRAII SwitchContext(SemaRef, New); |
4682 | 437k | SemaRef.SubstExceptionSpec(New, Proto, TemplateArgs); |
4683 | 437k | } |
4684 | 511k | } |
4685 | | |
4686 | | // Get the definition. Leaves the variable unchanged if undefined. |
4687 | 0 | const FunctionDecl *Definition = Tmpl; |
4688 | 1.27M | Tmpl->isDefined(Definition); |
4689 | | |
4690 | 1.27M | SemaRef.InstantiateAttrs(TemplateArgs, Definition, New, |
4691 | 1.27M | LateAttrs, StartingScope); |
4692 | | |
4693 | 1.27M | return false; |
4694 | 1.27M | } |
4695 | | |
4696 | | /// Initializes common fields of an instantiated method |
4697 | | /// declaration (New) from the corresponding fields of its template |
4698 | | /// (Tmpl). |
4699 | | /// |
4700 | | /// \returns true if there was an error |
4701 | | bool |
4702 | | TemplateDeclInstantiator::InitMethodInstantiation(CXXMethodDecl *New, |
4703 | 1.09M | CXXMethodDecl *Tmpl) { |
4704 | 1.09M | if (InitFunctionInstantiation(New, Tmpl)) |
4705 | 0 | return true; |
4706 | | |
4707 | 1.09M | if (isa<CXXDestructorDecl>(New) && SemaRef.getLangOpts().CPlusPlus1113.3k ) |
4708 | 13.3k | SemaRef.AdjustDestructorExceptionSpec(cast<CXXDestructorDecl>(New)); |
4709 | | |
4710 | 1.09M | New->setAccess(Tmpl->getAccess()); |
4711 | 1.09M | if (Tmpl->isVirtualAsWritten()) |
4712 | 20.0k | New->setVirtualAsWritten(true); |
4713 | | |
4714 | | // FIXME: New needs a pointer to Tmpl |
4715 | 1.09M | return false; |
4716 | 1.09M | } |
4717 | | |
4718 | | bool TemplateDeclInstantiator::SubstDefaultedFunction(FunctionDecl *New, |
4719 | 20.4k | FunctionDecl *Tmpl) { |
4720 | | // Transfer across any unqualified lookups. |
4721 | 20.4k | if (auto *DFI = Tmpl->getDefaultedFunctionInfo()) { |
4722 | 131 | SmallVector<DeclAccessPair, 32> Lookups; |
4723 | 131 | Lookups.reserve(DFI->getUnqualifiedLookups().size()); |
4724 | 131 | bool AnyChanged = false; |
4725 | 131 | for (DeclAccessPair DA : DFI->getUnqualifiedLookups()) { |
4726 | 18 | NamedDecl *D = SemaRef.FindInstantiatedDecl(New->getLocation(), |
4727 | 18 | DA.getDecl(), TemplateArgs); |
4728 | 18 | if (!D) |
4729 | 0 | return true; |
4730 | 18 | AnyChanged |= (D != DA.getDecl()); |
4731 | 18 | Lookups.push_back(DeclAccessPair::make(D, DA.getAccess())); |
4732 | 18 | } |
4733 | | |
4734 | | // It's unlikely that substitution will change any declarations. Don't |
4735 | | // store an unnecessary copy in that case. |
4736 | 131 | New->setDefaultedFunctionInfo( |
4737 | 131 | AnyChanged ? FunctionDecl::DefaultedFunctionInfo::Create( |
4738 | 8 | SemaRef.Context, Lookups) |
4739 | 131 | : DFI123 ); |
4740 | 131 | } |
4741 | | |
4742 | 20.4k | SemaRef.SetDeclDefaulted(New, Tmpl->getLocation()); |
4743 | 20.4k | return false; |
4744 | 20.4k | } |
|