SemaTemplateInstantiateDecl.cpp revision d8e54990ade0dd5566f8e3aa2e62def08753d1e9
18dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor//===--- SemaTemplateInstantiateDecl.cpp - C++ Template Decl Instantiation ===/ 28dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor// 38dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor// The LLVM Compiler Infrastructure 48dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor// 58dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor// This file is distributed under the University of Illinois Open Source 68dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor// License. See LICENSE.TXT for details. 78dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor//===----------------------------------------------------------------------===/ 88dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor// 98dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor// This file implements C++ template instantiation for declarations. 108dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor// 118dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor//===----------------------------------------------------------------------===/ 122d88708cbe4e4ec5e04e4acb6bd7f5be68557379John McCall#include "clang/Sema/SemaInternal.h" 13e737f5041a36d0befb39ffeed8d50ba15916d3daDouglas Gregor#include "clang/Sema/Lookup.h" 14f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall#include "clang/Sema/PrettyDeclStackTrace.h" 157cd088e519d7e6caa4c4c12db52e0e4ae35d25c2John McCall#include "clang/Sema/Template.h" 16aba43bb13b3aa3e81990989375fba3a902bfe1c2Douglas Gregor#include "clang/AST/ASTConsumer.h" 178dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor#include "clang/AST/ASTContext.h" 188dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor#include "clang/AST/DeclTemplate.h" 198dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor#include "clang/AST/DeclVisitor.h" 200c01d18094100db92d38daa923c95661512db203John McCall#include "clang/AST/DependentDiagnostic.h" 218dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor#include "clang/AST/Expr.h" 22a88cfbfac9bbcbb9858f048d6d73a48711d8e93dDouglas Gregor#include "clang/AST/ExprCXX.h" 2321ef0fa27b0783ec0bc6aa5b524feb2ec840f952John McCall#include "clang/AST/TypeLoc.h" 2483ddad3ab513f5d73698cf9fbeb4ed3f011bc3b9Douglas Gregor#include "clang/Lex/Preprocessor.h" 258dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor 268dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregorusing namespace clang; 278dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor 28b6217665c6a987f2d6c8665fd70365d7719ac4dfJohn McCallbool TemplateDeclInstantiator::SubstQualifier(const DeclaratorDecl *OldDecl, 29b6217665c6a987f2d6c8665fd70365d7719ac4dfJohn McCall DeclaratorDecl *NewDecl) { 30b6217665c6a987f2d6c8665fd70365d7719ac4dfJohn McCall NestedNameSpecifier *OldQual = OldDecl->getQualifier(); 31b6217665c6a987f2d6c8665fd70365d7719ac4dfJohn McCall if (!OldQual) return false; 32b6217665c6a987f2d6c8665fd70365d7719ac4dfJohn McCall 33b6217665c6a987f2d6c8665fd70365d7719ac4dfJohn McCall SourceRange QualRange = OldDecl->getQualifierRange(); 34b6217665c6a987f2d6c8665fd70365d7719ac4dfJohn McCall 35b6217665c6a987f2d6c8665fd70365d7719ac4dfJohn McCall NestedNameSpecifier *NewQual 36b6217665c6a987f2d6c8665fd70365d7719ac4dfJohn McCall = SemaRef.SubstNestedNameSpecifier(OldQual, QualRange, TemplateArgs); 37b6217665c6a987f2d6c8665fd70365d7719ac4dfJohn McCall if (!NewQual) 38b6217665c6a987f2d6c8665fd70365d7719ac4dfJohn McCall return true; 39b6217665c6a987f2d6c8665fd70365d7719ac4dfJohn McCall 40b6217665c6a987f2d6c8665fd70365d7719ac4dfJohn McCall NewDecl->setQualifierInfo(NewQual, QualRange); 41b6217665c6a987f2d6c8665fd70365d7719ac4dfJohn McCall return false; 42b6217665c6a987f2d6c8665fd70365d7719ac4dfJohn McCall} 43b6217665c6a987f2d6c8665fd70365d7719ac4dfJohn McCall 44b6217665c6a987f2d6c8665fd70365d7719ac4dfJohn McCallbool TemplateDeclInstantiator::SubstQualifier(const TagDecl *OldDecl, 45b6217665c6a987f2d6c8665fd70365d7719ac4dfJohn McCall TagDecl *NewDecl) { 46b6217665c6a987f2d6c8665fd70365d7719ac4dfJohn McCall NestedNameSpecifier *OldQual = OldDecl->getQualifier(); 47b6217665c6a987f2d6c8665fd70365d7719ac4dfJohn McCall if (!OldQual) return false; 48b6217665c6a987f2d6c8665fd70365d7719ac4dfJohn McCall 49b6217665c6a987f2d6c8665fd70365d7719ac4dfJohn McCall SourceRange QualRange = OldDecl->getQualifierRange(); 50b6217665c6a987f2d6c8665fd70365d7719ac4dfJohn McCall 51b6217665c6a987f2d6c8665fd70365d7719ac4dfJohn McCall NestedNameSpecifier *NewQual 52b6217665c6a987f2d6c8665fd70365d7719ac4dfJohn McCall = SemaRef.SubstNestedNameSpecifier(OldQual, QualRange, TemplateArgs); 53b6217665c6a987f2d6c8665fd70365d7719ac4dfJohn McCall if (!NewQual) 54b6217665c6a987f2d6c8665fd70365d7719ac4dfJohn McCall return true; 55b6217665c6a987f2d6c8665fd70365d7719ac4dfJohn McCall 56b6217665c6a987f2d6c8665fd70365d7719ac4dfJohn McCall NewDecl->setQualifierInfo(NewQual, QualRange); 57b6217665c6a987f2d6c8665fd70365d7719ac4dfJohn McCall return false; 58b6217665c6a987f2d6c8665fd70365d7719ac4dfJohn McCall} 59b6217665c6a987f2d6c8665fd70365d7719ac4dfJohn McCall 604ced79f0971592e6e7122037de69ee9ae534ce72Chandler Carruth// FIXME: Is this still too simple? 611d8d1ccd36888f1120b3a1df9e76f35dc2edb81dJohn McCallvoid Sema::InstantiateAttrs(const MultiLevelTemplateArgumentList &TemplateArgs, 621d8d1ccd36888f1120b3a1df9e76f35dc2edb81dJohn McCall Decl *Tmpl, Decl *New) { 63cf807c4dfdb23e8fa3f400e0b24ef5b79db7a530Sean Hunt for (AttrVec::const_iterator i = Tmpl->attr_begin(), e = Tmpl->attr_end(); 64cf807c4dfdb23e8fa3f400e0b24ef5b79db7a530Sean Hunt i != e; ++i) { 65cf807c4dfdb23e8fa3f400e0b24ef5b79db7a530Sean Hunt const Attr *TmplAttr = *i; 664ced79f0971592e6e7122037de69ee9ae534ce72Chandler Carruth // FIXME: This should be generalized to more than just the AlignedAttr. 674ced79f0971592e6e7122037de69ee9ae534ce72Chandler Carruth if (const AlignedAttr *Aligned = dyn_cast<AlignedAttr>(TmplAttr)) { 68cf807c4dfdb23e8fa3f400e0b24ef5b79db7a530Sean Hunt if (Aligned->isAlignmentDependent()) { 694ced79f0971592e6e7122037de69ee9ae534ce72Chandler Carruth // The alignment expression is not potentially evaluated. 701d8d1ccd36888f1120b3a1df9e76f35dc2edb81dJohn McCall EnterExpressionEvaluationContext Unevaluated(*this, 71f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall Sema::Unevaluated); 724ced79f0971592e6e7122037de69ee9ae534ce72Chandler Carruth 73cf807c4dfdb23e8fa3f400e0b24ef5b79db7a530Sean Hunt if (Aligned->isAlignmentExpr()) { 7460d7b3a319d84d688752be3870615ac0f111fb16John McCall ExprResult Result = SubstExpr(Aligned->getAlignmentExpr(), 757663f396651716c82280f8fdcf97ad8e27c1ce5aNick Lewycky TemplateArgs); 76cf807c4dfdb23e8fa3f400e0b24ef5b79db7a530Sean Hunt if (!Result.isInvalid()) 77cf807c4dfdb23e8fa3f400e0b24ef5b79db7a530Sean Hunt AddAlignedAttr(Aligned->getLocation(), New, Result.takeAs<Expr>()); 78cf807c4dfdb23e8fa3f400e0b24ef5b79db7a530Sean Hunt } 79cf807c4dfdb23e8fa3f400e0b24ef5b79db7a530Sean Hunt else { 80cf807c4dfdb23e8fa3f400e0b24ef5b79db7a530Sean Hunt TypeSourceInfo *Result = SubstType(Aligned->getAlignmentType(), 817663f396651716c82280f8fdcf97ad8e27c1ce5aNick Lewycky TemplateArgs, 827663f396651716c82280f8fdcf97ad8e27c1ce5aNick Lewycky Aligned->getLocation(), 837663f396651716c82280f8fdcf97ad8e27c1ce5aNick Lewycky DeclarationName()); 84cf807c4dfdb23e8fa3f400e0b24ef5b79db7a530Sean Hunt if (Result) 85cf807c4dfdb23e8fa3f400e0b24ef5b79db7a530Sean Hunt AddAlignedAttr(Aligned->getLocation(), New, Result); 86cf807c4dfdb23e8fa3f400e0b24ef5b79db7a530Sean Hunt } 874ced79f0971592e6e7122037de69ee9ae534ce72Chandler Carruth continue; 884ced79f0971592e6e7122037de69ee9ae534ce72Chandler Carruth } 894ced79f0971592e6e7122037de69ee9ae534ce72Chandler Carruth } 904ced79f0971592e6e7122037de69ee9ae534ce72Chandler Carruth 91d8fe2d56fb5463c9d109e8c6dab2e98b06bee186Anders Carlsson // FIXME: Is cloning correct for all attributes? 921d8d1ccd36888f1120b3a1df9e76f35dc2edb81dJohn McCall Attr *NewAttr = TmplAttr->clone(Context); 93d8fe2d56fb5463c9d109e8c6dab2e98b06bee186Anders Carlsson New->addAttr(NewAttr); 94d8fe2d56fb5463c9d109e8c6dab2e98b06bee186Anders Carlsson } 95d8fe2d56fb5463c9d109e8c6dab2e98b06bee186Anders Carlsson} 96d8fe2d56fb5463c9d109e8c6dab2e98b06bee186Anders Carlsson 974f722be4587a7a0dece399fb5405dda158971ae1Douglas GregorDecl * 984f722be4587a7a0dece399fb5405dda158971ae1Douglas GregorTemplateDeclInstantiator::VisitTranslationUnitDecl(TranslationUnitDecl *D) { 994f722be4587a7a0dece399fb5405dda158971ae1Douglas Gregor assert(false && "Translation units cannot be instantiated"); 1004f722be4587a7a0dece399fb5405dda158971ae1Douglas Gregor return D; 1014f722be4587a7a0dece399fb5405dda158971ae1Douglas Gregor} 1024f722be4587a7a0dece399fb5405dda158971ae1Douglas Gregor 1034f722be4587a7a0dece399fb5405dda158971ae1Douglas GregorDecl * 1044f722be4587a7a0dece399fb5405dda158971ae1Douglas GregorTemplateDeclInstantiator::VisitNamespaceDecl(NamespaceDecl *D) { 1054f722be4587a7a0dece399fb5405dda158971ae1Douglas Gregor assert(false && "Namespaces cannot be instantiated"); 1064f722be4587a7a0dece399fb5405dda158971ae1Douglas Gregor return D; 1074f722be4587a7a0dece399fb5405dda158971ae1Douglas Gregor} 1084f722be4587a7a0dece399fb5405dda158971ae1Douglas Gregor 1093dbd3d5c04cd5abd7dfd83b15f51d7c610a3c512John McCallDecl * 1103dbd3d5c04cd5abd7dfd83b15f51d7c610a3c512John McCallTemplateDeclInstantiator::VisitNamespaceAliasDecl(NamespaceAliasDecl *D) { 1113dbd3d5c04cd5abd7dfd83b15f51d7c610a3c512John McCall NamespaceAliasDecl *Inst 1123dbd3d5c04cd5abd7dfd83b15f51d7c610a3c512John McCall = NamespaceAliasDecl::Create(SemaRef.Context, Owner, 1133dbd3d5c04cd5abd7dfd83b15f51d7c610a3c512John McCall D->getNamespaceLoc(), 1143dbd3d5c04cd5abd7dfd83b15f51d7c610a3c512John McCall D->getAliasLoc(), 1153dbd3d5c04cd5abd7dfd83b15f51d7c610a3c512John McCall D->getNamespace()->getIdentifier(), 1163dbd3d5c04cd5abd7dfd83b15f51d7c610a3c512John McCall D->getQualifierRange(), 1173dbd3d5c04cd5abd7dfd83b15f51d7c610a3c512John McCall D->getQualifier(), 1183dbd3d5c04cd5abd7dfd83b15f51d7c610a3c512John McCall D->getTargetNameLoc(), 1193dbd3d5c04cd5abd7dfd83b15f51d7c610a3c512John McCall D->getNamespace()); 1203dbd3d5c04cd5abd7dfd83b15f51d7c610a3c512John McCall Owner->addDecl(Inst); 1213dbd3d5c04cd5abd7dfd83b15f51d7c610a3c512John McCall return Inst; 1223dbd3d5c04cd5abd7dfd83b15f51d7c610a3c512John McCall} 1233dbd3d5c04cd5abd7dfd83b15f51d7c610a3c512John McCall 1248dbc2694424b4e842b1d5ea39744a137b58600c3Douglas GregorDecl *TemplateDeclInstantiator::VisitTypedefDecl(TypedefDecl *D) { 1258dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor bool Invalid = false; 126a93c934af4fbf97cbe8e649d82e68ccacfe57c95John McCall TypeSourceInfo *DI = D->getTypeSourceInfo(); 127836adf6771d5170d936599dfcce21687e37e9bbfDouglas Gregor if (DI->getType()->isDependentType() || 128836adf6771d5170d936599dfcce21687e37e9bbfDouglas Gregor DI->getType()->isVariablyModifiedType()) { 129ba6a9bd384df475780be636ca45bcef5c5bbd19fJohn McCall DI = SemaRef.SubstType(DI, TemplateArgs, 130ba6a9bd384df475780be636ca45bcef5c5bbd19fJohn McCall D->getLocation(), D->getDeclName()); 131ba6a9bd384df475780be636ca45bcef5c5bbd19fJohn McCall if (!DI) { 1328dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor Invalid = true; 133a93c934af4fbf97cbe8e649d82e68ccacfe57c95John McCall DI = SemaRef.Context.getTrivialTypeSourceInfo(SemaRef.Context.IntTy); 1348dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor } 135b4eeaff1595b7d0a8fbc2b3c8bec7dc63f48b7fdDouglas Gregor } else { 136b4eeaff1595b7d0a8fbc2b3c8bec7dc63f48b7fdDouglas Gregor SemaRef.MarkDeclarationsReferencedInType(D->getLocation(), DI->getType()); 1378dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor } 1381eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1398dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor // Create the new typedef 1408dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor TypedefDecl *Typedef 1418dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor = TypedefDecl::Create(SemaRef.Context, Owner, D->getLocation(), 142ba6a9bd384df475780be636ca45bcef5c5bbd19fJohn McCall D->getIdentifier(), DI); 1438dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor if (Invalid) 1448dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor Typedef->setInvalidDecl(); 1458dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor 146cde5a400dbc9655eddf0f383585d3cf67c11c539John McCall // If the old typedef was the name for linkage purposes of an anonymous 147cde5a400dbc9655eddf0f383585d3cf67c11c539John McCall // tag decl, re-establish that relationship for the new typedef. 148cde5a400dbc9655eddf0f383585d3cf67c11c539John McCall if (const TagType *oldTagType = D->getUnderlyingType()->getAs<TagType>()) { 149cde5a400dbc9655eddf0f383585d3cf67c11c539John McCall TagDecl *oldTag = oldTagType->getDecl(); 150cde5a400dbc9655eddf0f383585d3cf67c11c539John McCall if (oldTag->getTypedefForAnonDecl() == D) { 151cde5a400dbc9655eddf0f383585d3cf67c11c539John McCall TagDecl *newTag = DI->getType()->castAs<TagType>()->getDecl(); 152cde5a400dbc9655eddf0f383585d3cf67c11c539John McCall assert(!newTag->getIdentifier() && !newTag->getTypedefForAnonDecl()); 153cde5a400dbc9655eddf0f383585d3cf67c11c539John McCall newTag->setTypedefForAnonDecl(Typedef); 154cde5a400dbc9655eddf0f383585d3cf67c11c539John McCall } 155d57a38ee02c285d69d05fed6df0d7406b2517888Douglas Gregor } 156d57a38ee02c285d69d05fed6df0d7406b2517888Douglas Gregor 1575126fd0dd92c4ec211c837ee78d5ce59c68dcbd5John McCall if (TypedefDecl *Prev = D->getPreviousDeclaration()) { 1587c1e98f1cb37b40e619a0c8aee8b337f037b432bDouglas Gregor NamedDecl *InstPrev = SemaRef.FindInstantiatedDecl(D->getLocation(), Prev, 1597c1e98f1cb37b40e619a0c8aee8b337f037b432bDouglas Gregor TemplateArgs); 1605126fd0dd92c4ec211c837ee78d5ce59c68dcbd5John McCall Typedef->setPreviousDeclaration(cast<TypedefDecl>(InstPrev)); 1615126fd0dd92c4ec211c837ee78d5ce59c68dcbd5John McCall } 1625126fd0dd92c4ec211c837ee78d5ce59c68dcbd5John McCall 1631d8d1ccd36888f1120b3a1df9e76f35dc2edb81dJohn McCall SemaRef.InstantiateAttrs(TemplateArgs, D, Typedef); 164d57a38ee02c285d69d05fed6df0d7406b2517888Douglas Gregor 16546460a68f6508775e98c19b4bb8454bb471aac24John McCall Typedef->setAccess(D->getAccess()); 16617945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis Owner->addDecl(Typedef); 1671eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1688dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor return Typedef; 1698dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor} 1708dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor 1716b98b2e5f33ce2dcdb7fa385f7e21672d49f1a69Douglas Gregor/// \brief Instantiate an initializer, breaking it into separate 1726b98b2e5f33ce2dcdb7fa385f7e21672d49f1a69Douglas Gregor/// initialization arguments. 1736b98b2e5f33ce2dcdb7fa385f7e21672d49f1a69Douglas Gregor/// 1746b98b2e5f33ce2dcdb7fa385f7e21672d49f1a69Douglas Gregor/// \param S The semantic analysis object. 1756b98b2e5f33ce2dcdb7fa385f7e21672d49f1a69Douglas Gregor/// 1766b98b2e5f33ce2dcdb7fa385f7e21672d49f1a69Douglas Gregor/// \param Init The initializer to instantiate. 1776b98b2e5f33ce2dcdb7fa385f7e21672d49f1a69Douglas Gregor/// 1786b98b2e5f33ce2dcdb7fa385f7e21672d49f1a69Douglas Gregor/// \param TemplateArgs Template arguments to be substituted into the 1796b98b2e5f33ce2dcdb7fa385f7e21672d49f1a69Douglas Gregor/// initializer. 1806b98b2e5f33ce2dcdb7fa385f7e21672d49f1a69Douglas Gregor/// 1816b98b2e5f33ce2dcdb7fa385f7e21672d49f1a69Douglas Gregor/// \param NewArgs Will be filled in with the instantiation arguments. 1826b98b2e5f33ce2dcdb7fa385f7e21672d49f1a69Douglas Gregor/// 1836b98b2e5f33ce2dcdb7fa385f7e21672d49f1a69Douglas Gregor/// \returns true if an error occurred, false otherwise 1846b98b2e5f33ce2dcdb7fa385f7e21672d49f1a69Douglas Gregorstatic bool InstantiateInitializer(Sema &S, Expr *Init, 1856b98b2e5f33ce2dcdb7fa385f7e21672d49f1a69Douglas Gregor const MultiLevelTemplateArgumentList &TemplateArgs, 1866b98b2e5f33ce2dcdb7fa385f7e21672d49f1a69Douglas Gregor SourceLocation &LParenLoc, 1877663f396651716c82280f8fdcf97ad8e27c1ce5aNick Lewycky ASTOwningVector<Expr*> &NewArgs, 1886b98b2e5f33ce2dcdb7fa385f7e21672d49f1a69Douglas Gregor SourceLocation &RParenLoc) { 1896b98b2e5f33ce2dcdb7fa385f7e21672d49f1a69Douglas Gregor NewArgs.clear(); 1906b98b2e5f33ce2dcdb7fa385f7e21672d49f1a69Douglas Gregor LParenLoc = SourceLocation(); 1916b98b2e5f33ce2dcdb7fa385f7e21672d49f1a69Douglas Gregor RParenLoc = SourceLocation(); 1926b98b2e5f33ce2dcdb7fa385f7e21672d49f1a69Douglas Gregor 1936b98b2e5f33ce2dcdb7fa385f7e21672d49f1a69Douglas Gregor if (!Init) 1946b98b2e5f33ce2dcdb7fa385f7e21672d49f1a69Douglas Gregor return false; 1956b98b2e5f33ce2dcdb7fa385f7e21672d49f1a69Douglas Gregor 1964765fa05b5652fcc4356371c2f481d0ea9a1b007John McCall if (ExprWithCleanups *ExprTemp = dyn_cast<ExprWithCleanups>(Init)) 1976b98b2e5f33ce2dcdb7fa385f7e21672d49f1a69Douglas Gregor Init = ExprTemp->getSubExpr(); 1986b98b2e5f33ce2dcdb7fa385f7e21672d49f1a69Douglas Gregor 1996b98b2e5f33ce2dcdb7fa385f7e21672d49f1a69Douglas Gregor while (CXXBindTemporaryExpr *Binder = dyn_cast<CXXBindTemporaryExpr>(Init)) 2006b98b2e5f33ce2dcdb7fa385f7e21672d49f1a69Douglas Gregor Init = Binder->getSubExpr(); 2016b98b2e5f33ce2dcdb7fa385f7e21672d49f1a69Douglas Gregor 2026b98b2e5f33ce2dcdb7fa385f7e21672d49f1a69Douglas Gregor if (ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(Init)) 2036b98b2e5f33ce2dcdb7fa385f7e21672d49f1a69Douglas Gregor Init = ICE->getSubExprAsWritten(); 2046b98b2e5f33ce2dcdb7fa385f7e21672d49f1a69Douglas Gregor 2056b98b2e5f33ce2dcdb7fa385f7e21672d49f1a69Douglas Gregor if (ParenListExpr *ParenList = dyn_cast<ParenListExpr>(Init)) { 2066b98b2e5f33ce2dcdb7fa385f7e21672d49f1a69Douglas Gregor LParenLoc = ParenList->getLParenLoc(); 2076b98b2e5f33ce2dcdb7fa385f7e21672d49f1a69Douglas Gregor RParenLoc = ParenList->getRParenLoc(); 20891fc73e7ffb1fa1da0276518359d3bd4ed11c843Douglas Gregor return S.SubstExprs(ParenList->getExprs(), ParenList->getNumExprs(), 20991fc73e7ffb1fa1da0276518359d3bd4ed11c843Douglas Gregor true, TemplateArgs, NewArgs); 2106b98b2e5f33ce2dcdb7fa385f7e21672d49f1a69Douglas Gregor } 2116b98b2e5f33ce2dcdb7fa385f7e21672d49f1a69Douglas Gregor 2126b98b2e5f33ce2dcdb7fa385f7e21672d49f1a69Douglas Gregor if (CXXConstructExpr *Construct = dyn_cast<CXXConstructExpr>(Init)) { 21328329e511854fdd3b31561b2690f91f9e6a6402eDouglas Gregor if (!isa<CXXTemporaryObjectExpr>(Construct)) { 21491fc73e7ffb1fa1da0276518359d3bd4ed11c843Douglas Gregor if (S.SubstExprs(Construct->getArgs(), Construct->getNumArgs(), true, 21591fc73e7ffb1fa1da0276518359d3bd4ed11c843Douglas Gregor TemplateArgs, NewArgs)) 21628329e511854fdd3b31561b2690f91f9e6a6402eDouglas Gregor return true; 21728329e511854fdd3b31561b2690f91f9e6a6402eDouglas Gregor 21828329e511854fdd3b31561b2690f91f9e6a6402eDouglas Gregor // FIXME: Fake locations! 21928329e511854fdd3b31561b2690f91f9e6a6402eDouglas Gregor LParenLoc = S.PP.getLocForEndOfToken(Init->getLocStart()); 220a1a04786cea2445759026edacd096abd1fbf4a05Douglas Gregor RParenLoc = LParenLoc; 22128329e511854fdd3b31561b2690f91f9e6a6402eDouglas Gregor return false; 22228329e511854fdd3b31561b2690f91f9e6a6402eDouglas Gregor } 2236b98b2e5f33ce2dcdb7fa385f7e21672d49f1a69Douglas Gregor } 2246b98b2e5f33ce2dcdb7fa385f7e21672d49f1a69Douglas Gregor 22560d7b3a319d84d688752be3870615ac0f111fb16John McCall ExprResult Result = S.SubstExpr(Init, TemplateArgs); 2266b98b2e5f33ce2dcdb7fa385f7e21672d49f1a69Douglas Gregor if (Result.isInvalid()) 2276b98b2e5f33ce2dcdb7fa385f7e21672d49f1a69Douglas Gregor return true; 2286b98b2e5f33ce2dcdb7fa385f7e21672d49f1a69Douglas Gregor 2296b98b2e5f33ce2dcdb7fa385f7e21672d49f1a69Douglas Gregor NewArgs.push_back(Result.takeAs<Expr>()); 2306b98b2e5f33ce2dcdb7fa385f7e21672d49f1a69Douglas Gregor return false; 2316b98b2e5f33ce2dcdb7fa385f7e21672d49f1a69Douglas Gregor} 2326b98b2e5f33ce2dcdb7fa385f7e21672d49f1a69Douglas Gregor 2333d7a12a50558c31d4351e923c15ab57688f4fdf2Douglas GregorDecl *TemplateDeclInstantiator::VisitVarDecl(VarDecl *D) { 2349901c57806f7e36736ed1616e6ab3eebcc99b78cDouglas Gregor // If this is the variable for an anonymous struct or union, 2359901c57806f7e36736ed1616e6ab3eebcc99b78cDouglas Gregor // instantiate the anonymous struct/union type first. 2369901c57806f7e36736ed1616e6ab3eebcc99b78cDouglas Gregor if (const RecordType *RecordTy = D->getType()->getAs<RecordType>()) 2379901c57806f7e36736ed1616e6ab3eebcc99b78cDouglas Gregor if (RecordTy->getDecl()->isAnonymousStructOrUnion()) 2389901c57806f7e36736ed1616e6ab3eebcc99b78cDouglas Gregor if (!VisitCXXRecordDecl(cast<CXXRecordDecl>(RecordTy->getDecl()))) 2399901c57806f7e36736ed1616e6ab3eebcc99b78cDouglas Gregor return 0; 2409901c57806f7e36736ed1616e6ab3eebcc99b78cDouglas Gregor 241ce3ff2bd3a3386dbc209d3cba4b8769173b274c1John McCall // Do substitution on the type of the declaration 242a93c934af4fbf97cbe8e649d82e68ccacfe57c95John McCall TypeSourceInfo *DI = SemaRef.SubstType(D->getTypeSourceInfo(), 2430a5fa06a688e1086ea553a24b42b9915996ed1f7John McCall TemplateArgs, 2440a5fa06a688e1086ea553a24b42b9915996ed1f7John McCall D->getTypeSpecStartLoc(), 2450a5fa06a688e1086ea553a24b42b9915996ed1f7John McCall D->getDeclName()); 2460a5fa06a688e1086ea553a24b42b9915996ed1f7John McCall if (!DI) 2473d7a12a50558c31d4351e923c15ab57688f4fdf2Douglas Gregor return 0; 2483d7a12a50558c31d4351e923c15ab57688f4fdf2Douglas Gregor 249c6dbc3fa467e2355b678a6b717534928048efcb2Douglas Gregor if (DI->getType()->isFunctionType()) { 250c6dbc3fa467e2355b678a6b717534928048efcb2Douglas Gregor SemaRef.Diag(D->getLocation(), diag::err_variable_instantiates_to_function) 251c6dbc3fa467e2355b678a6b717534928048efcb2Douglas Gregor << D->isStaticDataMember() << DI->getType(); 252c6dbc3fa467e2355b678a6b717534928048efcb2Douglas Gregor return 0; 253c6dbc3fa467e2355b678a6b717534928048efcb2Douglas Gregor } 254c6dbc3fa467e2355b678a6b717534928048efcb2Douglas Gregor 255b9f1b8d877541e76390cd3807c2dcff2f950360aDouglas Gregor // Build the instantiated declaration 2563d7a12a50558c31d4351e923c15ab57688f4fdf2Douglas Gregor VarDecl *Var = VarDecl::Create(SemaRef.Context, Owner, 2573d7a12a50558c31d4351e923c15ab57688f4fdf2Douglas Gregor D->getLocation(), D->getIdentifier(), 2580a5fa06a688e1086ea553a24b42b9915996ed1f7John McCall DI->getType(), DI, 25916573fa9705b546b7597c273b25b85d6321e2b33Douglas Gregor D->getStorageClass(), 26016573fa9705b546b7597c273b25b85d6321e2b33Douglas Gregor D->getStorageClassAsWritten()); 2613d7a12a50558c31d4351e923c15ab57688f4fdf2Douglas Gregor Var->setThreadSpecified(D->isThreadSpecified()); 2623d7a12a50558c31d4351e923c15ab57688f4fdf2Douglas Gregor Var->setCXXDirectInitializer(D->hasCXXDirectInitializer()); 2631eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 264b6217665c6a987f2d6c8665fd70365d7719ac4dfJohn McCall // Substitute the nested name specifier, if any. 265b6217665c6a987f2d6c8665fd70365d7719ac4dfJohn McCall if (SubstQualifier(D, Var)) 266b6217665c6a987f2d6c8665fd70365d7719ac4dfJohn McCall return 0; 267b6217665c6a987f2d6c8665fd70365d7719ac4dfJohn McCall 2681eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // If we are instantiating a static data member defined 2697caa6825f42a0f7e97d6fc06233133c42b218e46Douglas Gregor // out-of-line, the instantiation will have the same lexical 2707caa6825f42a0f7e97d6fc06233133c42b218e46Douglas Gregor // context (which will be a namespace scope) as the template. 2717caa6825f42a0f7e97d6fc06233133c42b218e46Douglas Gregor if (D->isOutOfLine()) 2727caa6825f42a0f7e97d6fc06233133c42b218e46Douglas Gregor Var->setLexicalDeclContext(D->getLexicalDeclContext()); 2731eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 27446460a68f6508775e98c19b4bb8454bb471aac24John McCall Var->setAccess(D->getAccess()); 275c070cc602d6eefea881f71a60de09e05b54c3fddDouglas Gregor 276c070cc602d6eefea881f71a60de09e05b54c3fddDouglas Gregor if (!D->isStaticDataMember()) 277c070cc602d6eefea881f71a60de09e05b54c3fddDouglas Gregor Var->setUsed(D->isUsed(false)); 2784469e8a97cdca3725b4f8f366916143113c029acDouglas Gregor 279390b4cc8b45a05612349269ef08faab3e4688f06Mike Stump // FIXME: In theory, we could have a previous declaration for variables that 280390b4cc8b45a05612349269ef08faab3e4688f06Mike Stump // are not static data members. 2813d7a12a50558c31d4351e923c15ab57688f4fdf2Douglas Gregor bool Redeclaration = false; 2826826314938f8510cd1a6b03b5d032592456ae27bJohn McCall // FIXME: having to fake up a LookupResult is dumb. 2836826314938f8510cd1a6b03b5d032592456ae27bJohn McCall LookupResult Previous(SemaRef, Var->getDeclName(), Var->getLocation(), 284449d0a829007ea654912098e6a73134a2c529d61Douglas Gregor Sema::LookupOrdinaryName, Sema::ForRedeclaration); 28560c93c9981c467738369702e7aa23fd58c2b6aacDouglas Gregor if (D->isStaticDataMember()) 28660c93c9981c467738369702e7aa23fd58c2b6aacDouglas Gregor SemaRef.LookupQualifiedName(Previous, Owner, false); 2876826314938f8510cd1a6b03b5d032592456ae27bJohn McCall SemaRef.CheckVariableDeclaration(Var, Previous, Redeclaration); 2881eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2897caa6825f42a0f7e97d6fc06233133c42b218e46Douglas Gregor if (D->isOutOfLine()) { 290ea7b4880bc07cd99b3994c2a95d722a06ab56594Abramo Bagnara if (!D->isStaticDataMember()) 291ea7b4880bc07cd99b3994c2a95d722a06ab56594Abramo Bagnara D->getLexicalDeclContext()->addDecl(Var); 2927caa6825f42a0f7e97d6fc06233133c42b218e46Douglas Gregor Owner->makeDeclVisibleInContext(Var); 2937caa6825f42a0f7e97d6fc06233133c42b218e46Douglas Gregor } else { 2947caa6825f42a0f7e97d6fc06233133c42b218e46Douglas Gregor Owner->addDecl(Var); 295f7d72f5a4a3f0e610d77c6779ca3c21920a14bc7Douglas Gregor if (Owner->isFunctionOrMethod()) 296f7d72f5a4a3f0e610d77c6779ca3c21920a14bc7Douglas Gregor SemaRef.CurrentInstantiationScope->InstantiatedLocal(D, Var); 2977caa6825f42a0f7e97d6fc06233133c42b218e46Douglas Gregor } 2981d8d1ccd36888f1120b3a1df9e76f35dc2edb81dJohn McCall SemaRef.InstantiateAttrs(TemplateArgs, D, Var); 2998dd0c5626455cdf94280783e85e413eed6cbf3d9Fariborz Jahanian 300251b4ff2578e26959a4c036140ccd61c5e9292f2Douglas Gregor // Link instantiations of static data members back to the template from 301251b4ff2578e26959a4c036140ccd61c5e9292f2Douglas Gregor // which they were instantiated. 302251b4ff2578e26959a4c036140ccd61c5e9292f2Douglas Gregor if (Var->isStaticDataMember()) 303251b4ff2578e26959a4c036140ccd61c5e9292f2Douglas Gregor SemaRef.Context.setInstantiatedFromStaticDataMember(Var, D, 304cf3293eaeb3853d12cff47e648bbe835004e929fDouglas Gregor TSK_ImplicitInstantiation); 305251b4ff2578e26959a4c036140ccd61c5e9292f2Douglas Gregor 30660c93c9981c467738369702e7aa23fd58c2b6aacDouglas Gregor if (Var->getAnyInitializer()) { 30760c93c9981c467738369702e7aa23fd58c2b6aacDouglas Gregor // We already have an initializer in the class. 30860c93c9981c467738369702e7aa23fd58c2b6aacDouglas Gregor } else if (D->getInit()) { 3091f5f3a4d58a1c7c50c331b33329fc14563533c04Douglas Gregor if (Var->isStaticDataMember() && !D->isOutOfLine()) 3101f5f3a4d58a1c7c50c331b33329fc14563533c04Douglas Gregor SemaRef.PushExpressionEvaluationContext(Sema::Unevaluated); 3111f5f3a4d58a1c7c50c331b33329fc14563533c04Douglas Gregor else 3121f5f3a4d58a1c7c50c331b33329fc14563533c04Douglas Gregor SemaRef.PushExpressionEvaluationContext(Sema::PotentiallyEvaluated); 3131f5f3a4d58a1c7c50c331b33329fc14563533c04Douglas Gregor 3146b98b2e5f33ce2dcdb7fa385f7e21672d49f1a69Douglas Gregor // Instantiate the initializer. 3156b98b2e5f33ce2dcdb7fa385f7e21672d49f1a69Douglas Gregor SourceLocation LParenLoc, RParenLoc; 316ca0408fb49c1370430672acf2d770b7151cf71deJohn McCall ASTOwningVector<Expr*> InitArgs(SemaRef); 3176b98b2e5f33ce2dcdb7fa385f7e21672d49f1a69Douglas Gregor if (!InstantiateInitializer(SemaRef, D->getInit(), TemplateArgs, LParenLoc, 318a1a04786cea2445759026edacd096abd1fbf4a05Douglas Gregor InitArgs, RParenLoc)) { 31907a77b4b1d1fa95930129541eff8b79558f5d80dDouglas Gregor // Attach the initializer to the declaration, if we have one. 32007a77b4b1d1fa95930129541eff8b79558f5d80dDouglas Gregor if (InitArgs.size() == 0) 32107a77b4b1d1fa95930129541eff8b79558f5d80dDouglas Gregor SemaRef.ActOnUninitializedDecl(Var, false); 32207a77b4b1d1fa95930129541eff8b79558f5d80dDouglas Gregor else if (D->hasCXXDirectInitializer()) { 3236eef519fc8a97bb7ca6066f23d35e10f06b2c1b5Douglas Gregor // Add the direct initializer to the declaration. 324d226f65006733ed7f709c3174f22ce33391cb58fJohn McCall SemaRef.AddCXXDirectInitializerToDecl(Var, 3256b98b2e5f33ce2dcdb7fa385f7e21672d49f1a69Douglas Gregor LParenLoc, 3266eef519fc8a97bb7ca6066f23d35e10f06b2c1b5Douglas Gregor move_arg(InitArgs), 3276b98b2e5f33ce2dcdb7fa385f7e21672d49f1a69Douglas Gregor RParenLoc); 32807a77b4b1d1fa95930129541eff8b79558f5d80dDouglas Gregor } else { 32907a77b4b1d1fa95930129541eff8b79558f5d80dDouglas Gregor assert(InitArgs.size() == 1); 3309ae2f076ca5ab1feb3ba95629099ec2319833701John McCall Expr *Init = InitArgs.take()[0]; 3319ae2f076ca5ab1feb3ba95629099ec2319833701John McCall SemaRef.AddInitializerToDecl(Var, Init, false); 33283ddad3ab513f5d73698cf9fbeb4ed3f011bc3b9Douglas Gregor } 3336eef519fc8a97bb7ca6066f23d35e10f06b2c1b5Douglas Gregor } else { 3346b98b2e5f33ce2dcdb7fa385f7e21672d49f1a69Douglas Gregor // FIXME: Not too happy about invalidating the declaration 3356b98b2e5f33ce2dcdb7fa385f7e21672d49f1a69Douglas Gregor // because of a bogus initializer. 3366b98b2e5f33ce2dcdb7fa385f7e21672d49f1a69Douglas Gregor Var->setInvalidDecl(); 3376eef519fc8a97bb7ca6066f23d35e10f06b2c1b5Douglas Gregor } 3386eef519fc8a97bb7ca6066f23d35e10f06b2c1b5Douglas Gregor 3391f5f3a4d58a1c7c50c331b33329fc14563533c04Douglas Gregor SemaRef.PopExpressionEvaluationContext(); 34065b90055dd30cfb83d8344ff62ed428257431be4Douglas Gregor } else if (!Var->isStaticDataMember() || Var->isOutOfLine()) 341d226f65006733ed7f709c3174f22ce33391cb58fJohn McCall SemaRef.ActOnUninitializedDecl(Var, false); 3423d7a12a50558c31d4351e923c15ab57688f4fdf2Douglas Gregor 3435764f613e61cb3183f3d7ceeafd23396de96ed16Douglas Gregor // Diagnose unused local variables. 3445764f613e61cb3183f3d7ceeafd23396de96ed16Douglas Gregor if (!Var->isInvalidDecl() && Owner->isFunctionOrMethod() && !Var->isUsed()) 3455764f613e61cb3183f3d7ceeafd23396de96ed16Douglas Gregor SemaRef.DiagnoseUnusedDecl(Var); 346bbc6454bb98d6a6ecbaafa715222c5db834307f2Argyrios Kyrtzidis 3473d7a12a50558c31d4351e923c15ab57688f4fdf2Douglas Gregor return Var; 3483d7a12a50558c31d4351e923c15ab57688f4fdf2Douglas Gregor} 3493d7a12a50558c31d4351e923c15ab57688f4fdf2Douglas Gregor 3506206d53f67613958ae1b023aba337ebb46f11a8bAbramo BagnaraDecl *TemplateDeclInstantiator::VisitAccessSpecDecl(AccessSpecDecl *D) { 3516206d53f67613958ae1b023aba337ebb46f11a8bAbramo Bagnara AccessSpecDecl* AD 3526206d53f67613958ae1b023aba337ebb46f11a8bAbramo Bagnara = AccessSpecDecl::Create(SemaRef.Context, D->getAccess(), Owner, 3536206d53f67613958ae1b023aba337ebb46f11a8bAbramo Bagnara D->getAccessSpecifierLoc(), D->getColonLoc()); 3546206d53f67613958ae1b023aba337ebb46f11a8bAbramo Bagnara Owner->addHiddenDecl(AD); 3556206d53f67613958ae1b023aba337ebb46f11a8bAbramo Bagnara return AD; 3566206d53f67613958ae1b023aba337ebb46f11a8bAbramo Bagnara} 3576206d53f67613958ae1b023aba337ebb46f11a8bAbramo Bagnara 3588dbc2694424b4e842b1d5ea39744a137b58600c3Douglas GregorDecl *TemplateDeclInstantiator::VisitFieldDecl(FieldDecl *D) { 3598dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor bool Invalid = false; 360a93c934af4fbf97cbe8e649d82e68ccacfe57c95John McCall TypeSourceInfo *DI = D->getTypeSourceInfo(); 361836adf6771d5170d936599dfcce21687e37e9bbfDouglas Gregor if (DI->getType()->isDependentType() || 362836adf6771d5170d936599dfcce21687e37e9bbfDouglas Gregor DI->getType()->isVariablyModifiedType()) { 36307fb6bef6242c0f2ab47f059583edbdef924823eJohn McCall DI = SemaRef.SubstType(DI, TemplateArgs, 36407fb6bef6242c0f2ab47f059583edbdef924823eJohn McCall D->getLocation(), D->getDeclName()); 36507fb6bef6242c0f2ab47f059583edbdef924823eJohn McCall if (!DI) { 366a93c934af4fbf97cbe8e649d82e68ccacfe57c95John McCall DI = D->getTypeSourceInfo(); 36707fb6bef6242c0f2ab47f059583edbdef924823eJohn McCall Invalid = true; 36807fb6bef6242c0f2ab47f059583edbdef924823eJohn McCall } else if (DI->getType()->isFunctionType()) { 3698dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor // C++ [temp.arg.type]p3: 3708dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor // If a declaration acquires a function type through a type 3718dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor // dependent on a template-parameter and this causes a 3728dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor // declaration that does not use the syntactic form of a 3738dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor // function declarator to have function type, the program is 3748dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor // ill-formed. 3758dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor SemaRef.Diag(D->getLocation(), diag::err_field_instantiates_to_function) 37607fb6bef6242c0f2ab47f059583edbdef924823eJohn McCall << DI->getType(); 3778dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor Invalid = true; 3788dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor } 379b4eeaff1595b7d0a8fbc2b3c8bec7dc63f48b7fdDouglas Gregor } else { 380b4eeaff1595b7d0a8fbc2b3c8bec7dc63f48b7fdDouglas Gregor SemaRef.MarkDeclarationsReferencedInType(D->getLocation(), DI->getType()); 3818dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor } 3828dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor 3838dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor Expr *BitWidth = D->getBitWidth(); 3848dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor if (Invalid) 3858dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor BitWidth = 0; 3868dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor else if (BitWidth) { 387ac7610dad6653bad02dd42de198ca358b6fb1f1dDouglas Gregor // The bit-width expression is not potentially evaluated. 388f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall EnterExpressionEvaluationContext Unevaluated(SemaRef, Sema::Unevaluated); 3891eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 39060d7b3a319d84d688752be3870615ac0f111fb16John McCall ExprResult InstantiatedBitWidth 391ce3ff2bd3a3386dbc209d3cba4b8769173b274c1John McCall = SemaRef.SubstExpr(BitWidth, TemplateArgs); 3928dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor if (InstantiatedBitWidth.isInvalid()) { 3938dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor Invalid = true; 3948dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor BitWidth = 0; 3958dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor } else 396e9146f2e9f1c4e281544e8c080934c72d41012caAnders Carlsson BitWidth = InstantiatedBitWidth.takeAs<Expr>(); 3978dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor } 3988dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor 39907fb6bef6242c0f2ab47f059583edbdef924823eJohn McCall FieldDecl *Field = SemaRef.CheckFieldDecl(D->getDeclName(), 40007fb6bef6242c0f2ab47f059583edbdef924823eJohn McCall DI->getType(), DI, 4011eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump cast<RecordDecl>(Owner), 4028dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor D->getLocation(), 4038dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor D->isMutable(), 4048dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor BitWidth, 405ea218b8e8f9ba82d1c76bcb7e86d121a5f65ebedSteve Naroff D->getTypeSpecStartLoc(), 4068dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor D->getAccess(), 4078dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor 0); 408663b5a0be7261c29bc4c526a71cffcfa02d4153eDouglas Gregor if (!Field) { 409663b5a0be7261c29bc4c526a71cffcfa02d4153eDouglas Gregor cast<Decl>(Owner)->setInvalidDecl(); 410f4b5f5c6a1487317aab9aa30d97bccfd57c82c98Anders Carlsson return 0; 411663b5a0be7261c29bc4c526a71cffcfa02d4153eDouglas Gregor } 4121eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4131d8d1ccd36888f1120b3a1df9e76f35dc2edb81dJohn McCall SemaRef.InstantiateAttrs(TemplateArgs, D, Field); 414d8fe2d56fb5463c9d109e8c6dab2e98b06bee186Anders Carlsson 415f4b5f5c6a1487317aab9aa30d97bccfd57c82c98Anders Carlsson if (Invalid) 416f4b5f5c6a1487317aab9aa30d97bccfd57c82c98Anders Carlsson Field->setInvalidDecl(); 4171eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 418f4b5f5c6a1487317aab9aa30d97bccfd57c82c98Anders Carlsson if (!Field->getDeclName()) { 419f4b5f5c6a1487317aab9aa30d97bccfd57c82c98Anders Carlsson // Keep track of where this decl came from. 420f4b5f5c6a1487317aab9aa30d97bccfd57c82c98Anders Carlsson SemaRef.Context.setInstantiatedFromUnnamedFieldDecl(Field, D); 4219901c57806f7e36736ed1616e6ab3eebcc99b78cDouglas Gregor } 4229901c57806f7e36736ed1616e6ab3eebcc99b78cDouglas Gregor if (CXXRecordDecl *Parent= dyn_cast<CXXRecordDecl>(Field->getDeclContext())) { 4239901c57806f7e36736ed1616e6ab3eebcc99b78cDouglas Gregor if (Parent->isAnonymousStructOrUnion() && 4247a126a474fdde06382b315b4e3d8ef0a21d4dc31Sebastian Redl Parent->getRedeclContext()->isFunctionOrMethod()) 4259901c57806f7e36736ed1616e6ab3eebcc99b78cDouglas Gregor SemaRef.CurrentInstantiationScope->InstantiatedLocal(D, Field); 4268dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor } 4271eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 428f4b5f5c6a1487317aab9aa30d97bccfd57c82c98Anders Carlsson Field->setImplicit(D->isImplicit()); 42946460a68f6508775e98c19b4bb8454bb471aac24John McCall Field->setAccess(D->getAccess()); 430f4b5f5c6a1487317aab9aa30d97bccfd57c82c98Anders Carlsson Owner->addDecl(Field); 4318dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor 4328dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor return Field; 4338dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor} 4348dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor 43587c2e121cf0522fc266efe2922b58091cd2e0182Francois PichetDecl *TemplateDeclInstantiator::VisitIndirectFieldDecl(IndirectFieldDecl *D) { 43687c2e121cf0522fc266efe2922b58091cd2e0182Francois Pichet NamedDecl **NamedChain = 43787c2e121cf0522fc266efe2922b58091cd2e0182Francois Pichet new (SemaRef.Context)NamedDecl*[D->getChainingSize()]; 43887c2e121cf0522fc266efe2922b58091cd2e0182Francois Pichet 43987c2e121cf0522fc266efe2922b58091cd2e0182Francois Pichet int i = 0; 44087c2e121cf0522fc266efe2922b58091cd2e0182Francois Pichet for (IndirectFieldDecl::chain_iterator PI = 44187c2e121cf0522fc266efe2922b58091cd2e0182Francois Pichet D->chain_begin(), PE = D->chain_end(); 44287c2e121cf0522fc266efe2922b58091cd2e0182Francois Pichet PI != PE; ++PI) 44387c2e121cf0522fc266efe2922b58091cd2e0182Francois Pichet NamedChain[i++] = (SemaRef.FindInstantiatedDecl(D->getLocation(), 44487c2e121cf0522fc266efe2922b58091cd2e0182Francois Pichet *PI, TemplateArgs)); 44587c2e121cf0522fc266efe2922b58091cd2e0182Francois Pichet 44640e17752086c2c497951d64f5ac6ab5039466113Francois Pichet QualType T = cast<FieldDecl>(NamedChain[i-1])->getType(); 44787c2e121cf0522fc266efe2922b58091cd2e0182Francois Pichet IndirectFieldDecl* IndirectField 44887c2e121cf0522fc266efe2922b58091cd2e0182Francois Pichet = IndirectFieldDecl::Create(SemaRef.Context, Owner, D->getLocation(), 44940e17752086c2c497951d64f5ac6ab5039466113Francois Pichet D->getIdentifier(), T, 45087c2e121cf0522fc266efe2922b58091cd2e0182Francois Pichet NamedChain, D->getChainingSize()); 45187c2e121cf0522fc266efe2922b58091cd2e0182Francois Pichet 45287c2e121cf0522fc266efe2922b58091cd2e0182Francois Pichet 45387c2e121cf0522fc266efe2922b58091cd2e0182Francois Pichet IndirectField->setImplicit(D->isImplicit()); 45487c2e121cf0522fc266efe2922b58091cd2e0182Francois Pichet IndirectField->setAccess(D->getAccess()); 45587c2e121cf0522fc266efe2922b58091cd2e0182Francois Pichet Owner->addDecl(IndirectField); 45687c2e121cf0522fc266efe2922b58091cd2e0182Francois Pichet return IndirectField; 45787c2e121cf0522fc266efe2922b58091cd2e0182Francois Pichet} 45887c2e121cf0522fc266efe2922b58091cd2e0182Francois Pichet 45902cace78cf48cc26686bd5b07c78606abca13bcdJohn McCallDecl *TemplateDeclInstantiator::VisitFriendDecl(FriendDecl *D) { 46002cace78cf48cc26686bd5b07c78606abca13bcdJohn McCall // Handle friend type expressions by simply substituting template 46106245bfb3ae40bb24a8bfb17eafeb266a4daf5caDouglas Gregor // parameters into the pattern type and checking the result. 46232f2fb53d9d7c28c94d8569fd0fcf06cccee0c3dJohn McCall if (TypeSourceInfo *Ty = D->getFriendType()) { 46332f2fb53d9d7c28c94d8569fd0fcf06cccee0c3dJohn McCall TypeSourceInfo *InstTy = 46432f2fb53d9d7c28c94d8569fd0fcf06cccee0c3dJohn McCall SemaRef.SubstType(Ty, TemplateArgs, 46532f2fb53d9d7c28c94d8569fd0fcf06cccee0c3dJohn McCall D->getLocation(), DeclarationName()); 46606245bfb3ae40bb24a8bfb17eafeb266a4daf5caDouglas Gregor if (!InstTy) 46706245bfb3ae40bb24a8bfb17eafeb266a4daf5caDouglas Gregor return 0; 468fd810b1386ed29b250e7d522ea826a65c815e49dJohn McCall 46906245bfb3ae40bb24a8bfb17eafeb266a4daf5caDouglas Gregor FriendDecl *FD = SemaRef.CheckFriendTypeDecl(D->getFriendLoc(), InstTy); 47006245bfb3ae40bb24a8bfb17eafeb266a4daf5caDouglas Gregor if (!FD) 47106245bfb3ae40bb24a8bfb17eafeb266a4daf5caDouglas Gregor return 0; 47206245bfb3ae40bb24a8bfb17eafeb266a4daf5caDouglas Gregor 47306245bfb3ae40bb24a8bfb17eafeb266a4daf5caDouglas Gregor FD->setAccess(AS_public); 4749a34edb710917798aa30263374f624f13b594605John McCall FD->setUnsupportedFriend(D->isUnsupportedFriend()); 47506245bfb3ae40bb24a8bfb17eafeb266a4daf5caDouglas Gregor Owner->addDecl(FD); 47606245bfb3ae40bb24a8bfb17eafeb266a4daf5caDouglas Gregor return FD; 47706245bfb3ae40bb24a8bfb17eafeb266a4daf5caDouglas Gregor } 47806245bfb3ae40bb24a8bfb17eafeb266a4daf5caDouglas Gregor 47906245bfb3ae40bb24a8bfb17eafeb266a4daf5caDouglas Gregor NamedDecl *ND = D->getFriendDecl(); 48006245bfb3ae40bb24a8bfb17eafeb266a4daf5caDouglas Gregor assert(ND && "friend decl must be a decl or a type!"); 48132f2fb53d9d7c28c94d8569fd0fcf06cccee0c3dJohn McCall 482af2094e7cecadf36667deb61a83587ffdd979bd3John McCall // All of the Visit implementations for the various potential friend 483af2094e7cecadf36667deb61a83587ffdd979bd3John McCall // declarations have to be carefully written to work for friend 484af2094e7cecadf36667deb61a83587ffdd979bd3John McCall // objects, with the most important detail being that the target 485af2094e7cecadf36667deb61a83587ffdd979bd3John McCall // decl should almost certainly not be placed in Owner. 486af2094e7cecadf36667deb61a83587ffdd979bd3John McCall Decl *NewND = Visit(ND); 48706245bfb3ae40bb24a8bfb17eafeb266a4daf5caDouglas Gregor if (!NewND) return 0; 4881eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 48902cace78cf48cc26686bd5b07c78606abca13bcdJohn McCall FriendDecl *FD = 49006245bfb3ae40bb24a8bfb17eafeb266a4daf5caDouglas Gregor FriendDecl::Create(SemaRef.Context, Owner, D->getLocation(), 49106245bfb3ae40bb24a8bfb17eafeb266a4daf5caDouglas Gregor cast<NamedDecl>(NewND), D->getFriendLoc()); 4925fee110ac106370f75592df024001de73edced2aJohn McCall FD->setAccess(AS_public); 4939a34edb710917798aa30263374f624f13b594605John McCall FD->setUnsupportedFriend(D->isUnsupportedFriend()); 49402cace78cf48cc26686bd5b07c78606abca13bcdJohn McCall Owner->addDecl(FD); 49502cace78cf48cc26686bd5b07c78606abca13bcdJohn McCall return FD; 496fd810b1386ed29b250e7d522ea826a65c815e49dJohn McCall} 497fd810b1386ed29b250e7d522ea826a65c815e49dJohn McCall 4988dbc2694424b4e842b1d5ea39744a137b58600c3Douglas GregorDecl *TemplateDeclInstantiator::VisitStaticAssertDecl(StaticAssertDecl *D) { 4998dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor Expr *AssertExpr = D->getAssertExpr(); 5001eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 501ac7610dad6653bad02dd42de198ca358b6fb1f1dDouglas Gregor // The expression in a static assertion is not potentially evaluated. 502f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall EnterExpressionEvaluationContext Unevaluated(SemaRef, Sema::Unevaluated); 5031eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 50460d7b3a319d84d688752be3870615ac0f111fb16John McCall ExprResult InstantiatedAssertExpr 505ce3ff2bd3a3386dbc209d3cba4b8769173b274c1John McCall = SemaRef.SubstExpr(AssertExpr, TemplateArgs); 5068dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor if (InstantiatedAssertExpr.isInvalid()) 5078dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor return 0; 5088dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor 50960d7b3a319d84d688752be3870615ac0f111fb16John McCall ExprResult Message(D->getMessage()); 5103fa5cae9b3812cab9fab6c042c3329bb70a3d046John McCall D->getMessage(); 511d226f65006733ed7f709c3174f22ce33391cb58fJohn McCall return SemaRef.ActOnStaticAssertDeclaration(D->getLocation(), 5129ae2f076ca5ab1feb3ba95629099ec2319833701John McCall InstantiatedAssertExpr.get(), 5139ae2f076ca5ab1feb3ba95629099ec2319833701John McCall Message.get()); 5148dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor} 5158dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor 5168dbc2694424b4e842b1d5ea39744a137b58600c3Douglas GregorDecl *TemplateDeclInstantiator::VisitEnumDecl(EnumDecl *D) { 5171eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump EnumDecl *Enum = EnumDecl::Create(SemaRef.Context, Owner, 5188dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor D->getLocation(), D->getIdentifier(), 519741dd9a7e1d63e4e385b657e4ce11c5d96d44f72Douglas Gregor D->getTagKeywordLoc(), 520a88cefd266c428be33cc06f7e8b00ff8fc97c1ffAbramo Bagnara /*PrevDecl=*/0, D->isScoped(), 521a88cefd266c428be33cc06f7e8b00ff8fc97c1ffAbramo Bagnara D->isScopedUsingClassTag(), D->isFixed()); 5221274ccd90aec0b205fc838c3d504821ccfb55482Douglas Gregor if (D->isFixed()) { 5231274ccd90aec0b205fc838c3d504821ccfb55482Douglas Gregor if (TypeSourceInfo* TI = D->getIntegerTypeSourceInfo()) { 5241274ccd90aec0b205fc838c3d504821ccfb55482Douglas Gregor // If we have type source information for the underlying type, it means it 5251274ccd90aec0b205fc838c3d504821ccfb55482Douglas Gregor // has been explicitly set by the user. Perform substitution on it before 5261274ccd90aec0b205fc838c3d504821ccfb55482Douglas Gregor // moving on. 5271274ccd90aec0b205fc838c3d504821ccfb55482Douglas Gregor SourceLocation UnderlyingLoc = TI->getTypeLoc().getBeginLoc(); 5281274ccd90aec0b205fc838c3d504821ccfb55482Douglas Gregor Enum->setIntegerTypeSourceInfo(SemaRef.SubstType(TI, 5291274ccd90aec0b205fc838c3d504821ccfb55482Douglas Gregor TemplateArgs, 5301274ccd90aec0b205fc838c3d504821ccfb55482Douglas Gregor UnderlyingLoc, 5311274ccd90aec0b205fc838c3d504821ccfb55482Douglas Gregor DeclarationName())); 5321274ccd90aec0b205fc838c3d504821ccfb55482Douglas Gregor 5331274ccd90aec0b205fc838c3d504821ccfb55482Douglas Gregor if (!Enum->getIntegerTypeSourceInfo()) 5341274ccd90aec0b205fc838c3d504821ccfb55482Douglas Gregor Enum->setIntegerType(SemaRef.Context.IntTy); 5351274ccd90aec0b205fc838c3d504821ccfb55482Douglas Gregor } 5361274ccd90aec0b205fc838c3d504821ccfb55482Douglas Gregor else { 5371274ccd90aec0b205fc838c3d504821ccfb55482Douglas Gregor assert(!D->getIntegerType()->isDependentType() 5381274ccd90aec0b205fc838c3d504821ccfb55482Douglas Gregor && "Dependent type without type source info"); 5391274ccd90aec0b205fc838c3d504821ccfb55482Douglas Gregor Enum->setIntegerType(D->getIntegerType()); 5401274ccd90aec0b205fc838c3d504821ccfb55482Douglas Gregor } 5411274ccd90aec0b205fc838c3d504821ccfb55482Douglas Gregor } 5421274ccd90aec0b205fc838c3d504821ccfb55482Douglas Gregor 5435b629aa86c987f276d00453b6c9ab8424f7903feJohn McCall SemaRef.InstantiateAttrs(TemplateArgs, D, Enum); 5445b629aa86c987f276d00453b6c9ab8424f7903feJohn McCall 5458dbc3c64965f99e48830885835b7d2fc26ec3cf5Douglas Gregor Enum->setInstantiationOfMemberEnum(D); 54606c0fecd197fef21e265a41bca8dc5022de1f864Douglas Gregor Enum->setAccess(D->getAccess()); 547b6217665c6a987f2d6c8665fd70365d7719ac4dfJohn McCall if (SubstQualifier(D, Enum)) return 0; 54817945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis Owner->addDecl(Enum); 5498dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor Enum->startDefinition(); 5508dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor 55196084f171f4824397dc48453146f0a9719cb9247Douglas Gregor if (D->getDeclContext()->isFunctionOrMethod()) 55296084f171f4824397dc48453146f0a9719cb9247Douglas Gregor SemaRef.CurrentInstantiationScope->InstantiatedLocal(D, Enum); 55396084f171f4824397dc48453146f0a9719cb9247Douglas Gregor 554d226f65006733ed7f709c3174f22ce33391cb58fJohn McCall llvm::SmallVector<Decl*, 4> Enumerators; 5558dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor 5568dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor EnumConstantDecl *LastEnumConst = 0; 55717945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis for (EnumDecl::enumerator_iterator EC = D->enumerator_begin(), 55817945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis ECEnd = D->enumerator_end(); 5598dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor EC != ECEnd; ++EC) { 5608dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor // The specified value for the enumerator. 56160d7b3a319d84d688752be3870615ac0f111fb16John McCall ExprResult Value = SemaRef.Owned((Expr *)0); 562ac7610dad6653bad02dd42de198ca358b6fb1f1dDouglas Gregor if (Expr *UninstValue = EC->getInitExpr()) { 563ac7610dad6653bad02dd42de198ca358b6fb1f1dDouglas Gregor // The enumerator's value expression is not potentially evaluated. 5641eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump EnterExpressionEvaluationContext Unevaluated(SemaRef, 565f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall Sema::Unevaluated); 5661eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 567ce3ff2bd3a3386dbc209d3cba4b8769173b274c1John McCall Value = SemaRef.SubstExpr(UninstValue, TemplateArgs); 568ac7610dad6653bad02dd42de198ca358b6fb1f1dDouglas Gregor } 5698dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor 5708dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor // Drop the initial value and continue. 5718dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor bool isInvalid = false; 5728dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor if (Value.isInvalid()) { 5738dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor Value = SemaRef.Owned((Expr *)0); 5748dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor isInvalid = true; 5758dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor } 5768dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor 5771eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump EnumConstantDecl *EnumConst 5788dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor = SemaRef.CheckEnumConstant(Enum, LastEnumConst, 5798dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor EC->getLocation(), EC->getIdentifier(), 5809ae2f076ca5ab1feb3ba95629099ec2319833701John McCall Value.get()); 5818dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor 5828dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor if (isInvalid) { 5838dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor if (EnumConst) 5848dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor EnumConst->setInvalidDecl(); 5858dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor Enum->setInvalidDecl(); 5868dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor } 5878dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor 5888dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor if (EnumConst) { 5895b629aa86c987f276d00453b6c9ab8424f7903feJohn McCall SemaRef.InstantiateAttrs(TemplateArgs, *EC, EnumConst); 5905b629aa86c987f276d00453b6c9ab8424f7903feJohn McCall 5913b85ecf2049c8670eba30d0c06f28f64168af9b8John McCall EnumConst->setAccess(Enum->getAccess()); 59217945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis Enum->addDecl(EnumConst); 593d226f65006733ed7f709c3174f22ce33391cb58fJohn McCall Enumerators.push_back(EnumConst); 5948dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor LastEnumConst = EnumConst; 59596084f171f4824397dc48453146f0a9719cb9247Douglas Gregor 59696084f171f4824397dc48453146f0a9719cb9247Douglas Gregor if (D->getDeclContext()->isFunctionOrMethod()) { 59796084f171f4824397dc48453146f0a9719cb9247Douglas Gregor // If the enumeration is within a function or method, record the enum 59896084f171f4824397dc48453146f0a9719cb9247Douglas Gregor // constant as a local. 59996084f171f4824397dc48453146f0a9719cb9247Douglas Gregor SemaRef.CurrentInstantiationScope->InstantiatedLocal(*EC, EnumConst); 60096084f171f4824397dc48453146f0a9719cb9247Douglas Gregor } 6018dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor } 6028dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor } 6031eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 604c6e35aae23bc3cea7daf5ee075fa695c01c0f66fMike Stump // FIXME: Fixup LBraceLoc and RBraceLoc 605fee13819693c8492f0c364bc704645e844ef737aEdward O'Callaghan // FIXME: Empty Scope and AttributeList (required to handle attribute packed). 606c6e35aae23bc3cea7daf5ee075fa695c01c0f66fMike Stump SemaRef.ActOnEnumBody(Enum->getLocation(), SourceLocation(), SourceLocation(), 607d226f65006733ed7f709c3174f22ce33391cb58fJohn McCall Enum, 608de7a0fcdf9f30cb5a97aab614f3975d93cd9926fEli Friedman Enumerators.data(), Enumerators.size(), 609fee13819693c8492f0c364bc704645e844ef737aEdward O'Callaghan 0, 0); 6108dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor 6118dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor return Enum; 6128dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor} 6138dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor 6146477b69cc93e0a0ff15036d60d604f3544da0f29Douglas GregorDecl *TemplateDeclInstantiator::VisitEnumConstantDecl(EnumConstantDecl *D) { 6156477b69cc93e0a0ff15036d60d604f3544da0f29Douglas Gregor assert(false && "EnumConstantDecls can only occur within EnumDecls."); 6166477b69cc93e0a0ff15036d60d604f3544da0f29Douglas Gregor return 0; 6176477b69cc93e0a0ff15036d60d604f3544da0f29Douglas Gregor} 6186477b69cc93e0a0ff15036d60d604f3544da0f29Douglas Gregor 619e29ba20148e9b7835ad463b39cd4ee9223eafbbfJohn McCallDecl *TemplateDeclInstantiator::VisitClassTemplateDecl(ClassTemplateDecl *D) { 62093ba8579c341d5329175f1413cdc3b35a36592d2John McCall bool isFriend = (D->getFriendObjectKind() != Decl::FOK_None); 62193ba8579c341d5329175f1413cdc3b35a36592d2John McCall 622550d9b28fd586db541eb6dd36f3c10d114e483d8Douglas Gregor // Create a local instantiation scope for this class template, which 623550d9b28fd586db541eb6dd36f3c10d114e483d8Douglas Gregor // will contain the instantiations of the template parameters. 6242a7fb27913999d132cf9e10e03dc5271faa2e9d3John McCall LocalInstantiationScope Scope(SemaRef); 625e29ba20148e9b7835ad463b39cd4ee9223eafbbfJohn McCall TemplateParameterList *TempParams = D->getTemplateParameters(); 626ce3ff2bd3a3386dbc209d3cba4b8769173b274c1John McCall TemplateParameterList *InstParams = SubstTemplateParams(TempParams); 6271eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (!InstParams) 628d60e105e6d1624da647ef7dd35a9cf6fad1b763eDouglas Gregor return NULL; 629e29ba20148e9b7835ad463b39cd4ee9223eafbbfJohn McCall 630e29ba20148e9b7835ad463b39cd4ee9223eafbbfJohn McCall CXXRecordDecl *Pattern = D->getTemplatedDecl(); 63193ba8579c341d5329175f1413cdc3b35a36592d2John McCall 63293ba8579c341d5329175f1413cdc3b35a36592d2John McCall // Instantiate the qualifier. We have to do this first in case 63393ba8579c341d5329175f1413cdc3b35a36592d2John McCall // we're a friend declaration, because if we are then we need to put 63493ba8579c341d5329175f1413cdc3b35a36592d2John McCall // the new declaration in the appropriate context. 63593ba8579c341d5329175f1413cdc3b35a36592d2John McCall NestedNameSpecifier *Qualifier = Pattern->getQualifier(); 63693ba8579c341d5329175f1413cdc3b35a36592d2John McCall if (Qualifier) { 63793ba8579c341d5329175f1413cdc3b35a36592d2John McCall Qualifier = SemaRef.SubstNestedNameSpecifier(Qualifier, 63893ba8579c341d5329175f1413cdc3b35a36592d2John McCall Pattern->getQualifierRange(), 63993ba8579c341d5329175f1413cdc3b35a36592d2John McCall TemplateArgs); 64093ba8579c341d5329175f1413cdc3b35a36592d2John McCall if (!Qualifier) return 0; 64193ba8579c341d5329175f1413cdc3b35a36592d2John McCall } 64293ba8579c341d5329175f1413cdc3b35a36592d2John McCall 64393ba8579c341d5329175f1413cdc3b35a36592d2John McCall CXXRecordDecl *PrevDecl = 0; 64493ba8579c341d5329175f1413cdc3b35a36592d2John McCall ClassTemplateDecl *PrevClassTemplate = 0; 64593ba8579c341d5329175f1413cdc3b35a36592d2John McCall 64637574f55cd637340f651330f5cfda69742880d36Nick Lewycky if (!isFriend && Pattern->getPreviousDeclaration()) { 64737574f55cd637340f651330f5cfda69742880d36Nick Lewycky DeclContext::lookup_result Found = Owner->lookup(Pattern->getDeclName()); 64837574f55cd637340f651330f5cfda69742880d36Nick Lewycky if (Found.first != Found.second) { 64937574f55cd637340f651330f5cfda69742880d36Nick Lewycky PrevClassTemplate = dyn_cast<ClassTemplateDecl>(*Found.first); 65037574f55cd637340f651330f5cfda69742880d36Nick Lewycky if (PrevClassTemplate) 65137574f55cd637340f651330f5cfda69742880d36Nick Lewycky PrevDecl = PrevClassTemplate->getTemplatedDecl(); 65237574f55cd637340f651330f5cfda69742880d36Nick Lewycky } 65337574f55cd637340f651330f5cfda69742880d36Nick Lewycky } 65437574f55cd637340f651330f5cfda69742880d36Nick Lewycky 65593ba8579c341d5329175f1413cdc3b35a36592d2John McCall // If this isn't a friend, then it's a member template, in which 65693ba8579c341d5329175f1413cdc3b35a36592d2John McCall // case we just want to build the instantiation in the 65793ba8579c341d5329175f1413cdc3b35a36592d2John McCall // specialization. If it is a friend, we want to build it in 65893ba8579c341d5329175f1413cdc3b35a36592d2John McCall // the appropriate context. 65993ba8579c341d5329175f1413cdc3b35a36592d2John McCall DeclContext *DC = Owner; 66093ba8579c341d5329175f1413cdc3b35a36592d2John McCall if (isFriend) { 66193ba8579c341d5329175f1413cdc3b35a36592d2John McCall if (Qualifier) { 66293ba8579c341d5329175f1413cdc3b35a36592d2John McCall CXXScopeSpec SS; 66393ba8579c341d5329175f1413cdc3b35a36592d2John McCall SS.setScopeRep(Qualifier); 66493ba8579c341d5329175f1413cdc3b35a36592d2John McCall SS.setRange(Pattern->getQualifierRange()); 66593ba8579c341d5329175f1413cdc3b35a36592d2John McCall DC = SemaRef.computeDeclContext(SS); 66693ba8579c341d5329175f1413cdc3b35a36592d2John McCall if (!DC) return 0; 66793ba8579c341d5329175f1413cdc3b35a36592d2John McCall } else { 66893ba8579c341d5329175f1413cdc3b35a36592d2John McCall DC = SemaRef.FindInstantiatedContext(Pattern->getLocation(), 66993ba8579c341d5329175f1413cdc3b35a36592d2John McCall Pattern->getDeclContext(), 67093ba8579c341d5329175f1413cdc3b35a36592d2John McCall TemplateArgs); 67193ba8579c341d5329175f1413cdc3b35a36592d2John McCall } 67293ba8579c341d5329175f1413cdc3b35a36592d2John McCall 67393ba8579c341d5329175f1413cdc3b35a36592d2John McCall // Look for a previous declaration of the template in the owning 67493ba8579c341d5329175f1413cdc3b35a36592d2John McCall // context. 67593ba8579c341d5329175f1413cdc3b35a36592d2John McCall LookupResult R(SemaRef, Pattern->getDeclName(), Pattern->getLocation(), 67693ba8579c341d5329175f1413cdc3b35a36592d2John McCall Sema::LookupOrdinaryName, Sema::ForRedeclaration); 67793ba8579c341d5329175f1413cdc3b35a36592d2John McCall SemaRef.LookupQualifiedName(R, DC); 67893ba8579c341d5329175f1413cdc3b35a36592d2John McCall 67993ba8579c341d5329175f1413cdc3b35a36592d2John McCall if (R.isSingleResult()) { 68093ba8579c341d5329175f1413cdc3b35a36592d2John McCall PrevClassTemplate = R.getAsSingle<ClassTemplateDecl>(); 68193ba8579c341d5329175f1413cdc3b35a36592d2John McCall if (PrevClassTemplate) 68293ba8579c341d5329175f1413cdc3b35a36592d2John McCall PrevDecl = PrevClassTemplate->getTemplatedDecl(); 68393ba8579c341d5329175f1413cdc3b35a36592d2John McCall } 68493ba8579c341d5329175f1413cdc3b35a36592d2John McCall 68593ba8579c341d5329175f1413cdc3b35a36592d2John McCall if (!PrevClassTemplate && Qualifier) { 68693ba8579c341d5329175f1413cdc3b35a36592d2John McCall SemaRef.Diag(Pattern->getLocation(), diag::err_not_tag_in_scope) 6871eabb7d0c30f6a876b0fd03ad4656c096c26b8d0Douglas Gregor << D->getTemplatedDecl()->getTagKind() << Pattern->getDeclName() << DC 6881eabb7d0c30f6a876b0fd03ad4656c096c26b8d0Douglas Gregor << Pattern->getQualifierRange(); 68993ba8579c341d5329175f1413cdc3b35a36592d2John McCall return 0; 69093ba8579c341d5329175f1413cdc3b35a36592d2John McCall } 69193ba8579c341d5329175f1413cdc3b35a36592d2John McCall 692c53d0d762010217d02da5aa14be171817d63e3feDouglas Gregor bool AdoptedPreviousTemplateParams = false; 69393ba8579c341d5329175f1413cdc3b35a36592d2John McCall if (PrevClassTemplate) { 694c53d0d762010217d02da5aa14be171817d63e3feDouglas Gregor bool Complain = true; 695c53d0d762010217d02da5aa14be171817d63e3feDouglas Gregor 696c53d0d762010217d02da5aa14be171817d63e3feDouglas Gregor // HACK: libstdc++ 4.2.1 contains an ill-formed friend class 697c53d0d762010217d02da5aa14be171817d63e3feDouglas Gregor // template for struct std::tr1::__detail::_Map_base, where the 698c53d0d762010217d02da5aa14be171817d63e3feDouglas Gregor // template parameters of the friend declaration don't match the 699c53d0d762010217d02da5aa14be171817d63e3feDouglas Gregor // template parameters of the original declaration. In this one 700c53d0d762010217d02da5aa14be171817d63e3feDouglas Gregor // case, we don't complain about the ill-formed friend 701c53d0d762010217d02da5aa14be171817d63e3feDouglas Gregor // declaration. 702c53d0d762010217d02da5aa14be171817d63e3feDouglas Gregor if (isFriend && Pattern->getIdentifier() && 703c53d0d762010217d02da5aa14be171817d63e3feDouglas Gregor Pattern->getIdentifier()->isStr("_Map_base") && 704c53d0d762010217d02da5aa14be171817d63e3feDouglas Gregor DC->isNamespace() && 705c53d0d762010217d02da5aa14be171817d63e3feDouglas Gregor cast<NamespaceDecl>(DC)->getIdentifier() && 706c53d0d762010217d02da5aa14be171817d63e3feDouglas Gregor cast<NamespaceDecl>(DC)->getIdentifier()->isStr("__detail")) { 707c53d0d762010217d02da5aa14be171817d63e3feDouglas Gregor DeclContext *DCParent = DC->getParent(); 708c53d0d762010217d02da5aa14be171817d63e3feDouglas Gregor if (DCParent->isNamespace() && 709c53d0d762010217d02da5aa14be171817d63e3feDouglas Gregor cast<NamespaceDecl>(DCParent)->getIdentifier() && 710c53d0d762010217d02da5aa14be171817d63e3feDouglas Gregor cast<NamespaceDecl>(DCParent)->getIdentifier()->isStr("tr1")) { 711c53d0d762010217d02da5aa14be171817d63e3feDouglas Gregor DeclContext *DCParent2 = DCParent->getParent(); 712c53d0d762010217d02da5aa14be171817d63e3feDouglas Gregor if (DCParent2->isNamespace() && 713c53d0d762010217d02da5aa14be171817d63e3feDouglas Gregor cast<NamespaceDecl>(DCParent2)->getIdentifier() && 714c53d0d762010217d02da5aa14be171817d63e3feDouglas Gregor cast<NamespaceDecl>(DCParent2)->getIdentifier()->isStr("std") && 715c53d0d762010217d02da5aa14be171817d63e3feDouglas Gregor DCParent2->getParent()->isTranslationUnit()) 716c53d0d762010217d02da5aa14be171817d63e3feDouglas Gregor Complain = false; 717c53d0d762010217d02da5aa14be171817d63e3feDouglas Gregor } 718c53d0d762010217d02da5aa14be171817d63e3feDouglas Gregor } 719c53d0d762010217d02da5aa14be171817d63e3feDouglas Gregor 72093ba8579c341d5329175f1413cdc3b35a36592d2John McCall TemplateParameterList *PrevParams 72193ba8579c341d5329175f1413cdc3b35a36592d2John McCall = PrevClassTemplate->getTemplateParameters(); 72293ba8579c341d5329175f1413cdc3b35a36592d2John McCall 72393ba8579c341d5329175f1413cdc3b35a36592d2John McCall // Make sure the parameter lists match. 72493ba8579c341d5329175f1413cdc3b35a36592d2John McCall if (!SemaRef.TemplateParameterListsAreEqual(InstParams, PrevParams, 725c53d0d762010217d02da5aa14be171817d63e3feDouglas Gregor Complain, 726c53d0d762010217d02da5aa14be171817d63e3feDouglas Gregor Sema::TPL_TemplateMatch)) { 727c53d0d762010217d02da5aa14be171817d63e3feDouglas Gregor if (Complain) 728c53d0d762010217d02da5aa14be171817d63e3feDouglas Gregor return 0; 729c53d0d762010217d02da5aa14be171817d63e3feDouglas Gregor 730c53d0d762010217d02da5aa14be171817d63e3feDouglas Gregor AdoptedPreviousTemplateParams = true; 731c53d0d762010217d02da5aa14be171817d63e3feDouglas Gregor InstParams = PrevParams; 732c53d0d762010217d02da5aa14be171817d63e3feDouglas Gregor } 73393ba8579c341d5329175f1413cdc3b35a36592d2John McCall 73493ba8579c341d5329175f1413cdc3b35a36592d2John McCall // Do some additional validation, then merge default arguments 73593ba8579c341d5329175f1413cdc3b35a36592d2John McCall // from the existing declarations. 736c53d0d762010217d02da5aa14be171817d63e3feDouglas Gregor if (!AdoptedPreviousTemplateParams && 737c53d0d762010217d02da5aa14be171817d63e3feDouglas Gregor SemaRef.CheckTemplateParameterList(InstParams, PrevParams, 73893ba8579c341d5329175f1413cdc3b35a36592d2John McCall Sema::TPC_ClassTemplate)) 73993ba8579c341d5329175f1413cdc3b35a36592d2John McCall return 0; 74093ba8579c341d5329175f1413cdc3b35a36592d2John McCall } 74193ba8579c341d5329175f1413cdc3b35a36592d2John McCall } 74293ba8579c341d5329175f1413cdc3b35a36592d2John McCall 743e29ba20148e9b7835ad463b39cd4ee9223eafbbfJohn McCall CXXRecordDecl *RecordInst 74493ba8579c341d5329175f1413cdc3b35a36592d2John McCall = CXXRecordDecl::Create(SemaRef.Context, Pattern->getTagKind(), DC, 745e29ba20148e9b7835ad463b39cd4ee9223eafbbfJohn McCall Pattern->getLocation(), Pattern->getIdentifier(), 74693ba8579c341d5329175f1413cdc3b35a36592d2John McCall Pattern->getTagKeywordLoc(), PrevDecl, 747f0510d49a6985e9284d30cfc36a0df2a6292a638Douglas Gregor /*DelayTypeCreation=*/true); 748e29ba20148e9b7835ad463b39cd4ee9223eafbbfJohn McCall 74993ba8579c341d5329175f1413cdc3b35a36592d2John McCall if (Qualifier) 75093ba8579c341d5329175f1413cdc3b35a36592d2John McCall RecordInst->setQualifierInfo(Qualifier, Pattern->getQualifierRange()); 751b6217665c6a987f2d6c8665fd70365d7719ac4dfJohn McCall 752e29ba20148e9b7835ad463b39cd4ee9223eafbbfJohn McCall ClassTemplateDecl *Inst 75393ba8579c341d5329175f1413cdc3b35a36592d2John McCall = ClassTemplateDecl::Create(SemaRef.Context, DC, D->getLocation(), 75493ba8579c341d5329175f1413cdc3b35a36592d2John McCall D->getIdentifier(), InstParams, RecordInst, 75593ba8579c341d5329175f1413cdc3b35a36592d2John McCall PrevClassTemplate); 756e29ba20148e9b7835ad463b39cd4ee9223eafbbfJohn McCall RecordInst->setDescribedClassTemplate(Inst); 757ea7390c7b384ce607bfc8fc13c01f37cfc3776f0John McCall 75893ba8579c341d5329175f1413cdc3b35a36592d2John McCall if (isFriend) { 759ea7390c7b384ce607bfc8fc13c01f37cfc3776f0John McCall if (PrevClassTemplate) 760ea7390c7b384ce607bfc8fc13c01f37cfc3776f0John McCall Inst->setAccess(PrevClassTemplate->getAccess()); 761ea7390c7b384ce607bfc8fc13c01f37cfc3776f0John McCall else 762ea7390c7b384ce607bfc8fc13c01f37cfc3776f0John McCall Inst->setAccess(D->getAccess()); 763ea7390c7b384ce607bfc8fc13c01f37cfc3776f0John McCall 76493ba8579c341d5329175f1413cdc3b35a36592d2John McCall Inst->setObjectOfFriendDecl(PrevClassTemplate != 0); 76593ba8579c341d5329175f1413cdc3b35a36592d2John McCall // TODO: do we want to track the instantiation progeny of this 76693ba8579c341d5329175f1413cdc3b35a36592d2John McCall // friend target decl? 76793ba8579c341d5329175f1413cdc3b35a36592d2John McCall } else { 768e8c01bdb56549adcecd71ce39160eea54b2c51c8Douglas Gregor Inst->setAccess(D->getAccess()); 76937574f55cd637340f651330f5cfda69742880d36Nick Lewycky if (!PrevClassTemplate) 77037574f55cd637340f651330f5cfda69742880d36Nick Lewycky Inst->setInstantiatedFromMemberTemplate(D); 77193ba8579c341d5329175f1413cdc3b35a36592d2John McCall } 772f0510d49a6985e9284d30cfc36a0df2a6292a638Douglas Gregor 773f0510d49a6985e9284d30cfc36a0df2a6292a638Douglas Gregor // Trigger creation of the type for the instantiation. 7743cb0ebd5f76abcb776f7cb4062bd79e3268c0dc4John McCall SemaRef.Context.getInjectedClassNameType(RecordInst, 77524bae92f08ae098cc50a602d8cf1273b423e14daDouglas Gregor Inst->getInjectedClassNameSpecialization()); 776ea7390c7b384ce607bfc8fc13c01f37cfc3776f0John McCall 777259571e27e513cfaf691cc7447e09b31a47d5438Douglas Gregor // Finish handling of friends. 77893ba8579c341d5329175f1413cdc3b35a36592d2John McCall if (isFriend) { 77993ba8579c341d5329175f1413cdc3b35a36592d2John McCall DC->makeDeclVisibleInContext(Inst, /*Recoverable*/ false); 780e8c01bdb56549adcecd71ce39160eea54b2c51c8Douglas Gregor return Inst; 781259571e27e513cfaf691cc7447e09b31a47d5438Douglas Gregor } 782e8c01bdb56549adcecd71ce39160eea54b2c51c8Douglas Gregor 783e29ba20148e9b7835ad463b39cd4ee9223eafbbfJohn McCall Owner->addDecl(Inst); 784d65587f7a6d38965fa37158d3f57990a7faf3836Douglas Gregor 785d65587f7a6d38965fa37158d3f57990a7faf3836Douglas Gregor if (!PrevClassTemplate) { 786d65587f7a6d38965fa37158d3f57990a7faf3836Douglas Gregor // Queue up any out-of-line partial specializations of this member 787d65587f7a6d38965fa37158d3f57990a7faf3836Douglas Gregor // class template; the client will force their instantiation once 788d65587f7a6d38965fa37158d3f57990a7faf3836Douglas Gregor // the enclosing class has been instantiated. 789d65587f7a6d38965fa37158d3f57990a7faf3836Douglas Gregor llvm::SmallVector<ClassTemplatePartialSpecializationDecl *, 4> PartialSpecs; 790d65587f7a6d38965fa37158d3f57990a7faf3836Douglas Gregor D->getPartialSpecializations(PartialSpecs); 791d65587f7a6d38965fa37158d3f57990a7faf3836Douglas Gregor for (unsigned I = 0, N = PartialSpecs.size(); I != N; ++I) 792d65587f7a6d38965fa37158d3f57990a7faf3836Douglas Gregor if (PartialSpecs[I]->isOutOfLine()) 793d65587f7a6d38965fa37158d3f57990a7faf3836Douglas Gregor OutOfLinePartialSpecs.push_back(std::make_pair(Inst, PartialSpecs[I])); 794d65587f7a6d38965fa37158d3f57990a7faf3836Douglas Gregor } 795d65587f7a6d38965fa37158d3f57990a7faf3836Douglas Gregor 796e29ba20148e9b7835ad463b39cd4ee9223eafbbfJohn McCall return Inst; 797e29ba20148e9b7835ad463b39cd4ee9223eafbbfJohn McCall} 798e29ba20148e9b7835ad463b39cd4ee9223eafbbfJohn McCall 799d60e105e6d1624da647ef7dd35a9cf6fad1b763eDouglas GregorDecl * 8007974c3b7062f85bb7c0ada34526cdefe1d30f89bDouglas GregorTemplateDeclInstantiator::VisitClassTemplatePartialSpecializationDecl( 8017974c3b7062f85bb7c0ada34526cdefe1d30f89bDouglas Gregor ClassTemplatePartialSpecializationDecl *D) { 802ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor ClassTemplateDecl *ClassTemplate = D->getSpecializedTemplate(); 803ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor 804ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor // Lookup the already-instantiated declaration in the instantiation 805ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor // of the class template and return that. 806ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor DeclContext::lookup_result Found 807ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor = Owner->lookup(ClassTemplate->getDeclName()); 808ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor if (Found.first == Found.second) 809ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor return 0; 810ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor 811ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor ClassTemplateDecl *InstClassTemplate 812ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor = dyn_cast<ClassTemplateDecl>(*Found.first); 813ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor if (!InstClassTemplate) 814ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor return 0; 815ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor 816d65587f7a6d38965fa37158d3f57990a7faf3836Douglas Gregor if (ClassTemplatePartialSpecializationDecl *Result 817d65587f7a6d38965fa37158d3f57990a7faf3836Douglas Gregor = InstClassTemplate->findPartialSpecInstantiatedFromMember(D)) 818d65587f7a6d38965fa37158d3f57990a7faf3836Douglas Gregor return Result; 819d65587f7a6d38965fa37158d3f57990a7faf3836Douglas Gregor 820d65587f7a6d38965fa37158d3f57990a7faf3836Douglas Gregor return InstantiateClassTemplatePartialSpecialization(InstClassTemplate, D); 8217974c3b7062f85bb7c0ada34526cdefe1d30f89bDouglas Gregor} 8227974c3b7062f85bb7c0ada34526cdefe1d30f89bDouglas Gregor 8237974c3b7062f85bb7c0ada34526cdefe1d30f89bDouglas GregorDecl * 824d60e105e6d1624da647ef7dd35a9cf6fad1b763eDouglas GregorTemplateDeclInstantiator::VisitFunctionTemplateDecl(FunctionTemplateDecl *D) { 825550d9b28fd586db541eb6dd36f3c10d114e483d8Douglas Gregor // Create a local instantiation scope for this function template, which 826550d9b28fd586db541eb6dd36f3c10d114e483d8Douglas Gregor // will contain the instantiations of the template parameters and then get 827550d9b28fd586db541eb6dd36f3c10d114e483d8Douglas Gregor // merged with the local instantiation scope for the function template 828550d9b28fd586db541eb6dd36f3c10d114e483d8Douglas Gregor // itself. 8292a7fb27913999d132cf9e10e03dc5271faa2e9d3John McCall LocalInstantiationScope Scope(SemaRef); 830895162da2d52f4243f61081d7436de66af4503fcDouglas Gregor 831d60e105e6d1624da647ef7dd35a9cf6fad1b763eDouglas Gregor TemplateParameterList *TempParams = D->getTemplateParameters(); 832d60e105e6d1624da647ef7dd35a9cf6fad1b763eDouglas Gregor TemplateParameterList *InstParams = SubstTemplateParams(TempParams); 8331eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (!InstParams) 834d60e105e6d1624da647ef7dd35a9cf6fad1b763eDouglas Gregor return NULL; 835ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor 836a735b206fdb5c15767a45289e1ffb3b568f70f2bDouglas Gregor FunctionDecl *Instantiated = 0; 837a735b206fdb5c15767a45289e1ffb3b568f70f2bDouglas Gregor if (CXXMethodDecl *DMethod = dyn_cast<CXXMethodDecl>(D->getTemplatedDecl())) 838a735b206fdb5c15767a45289e1ffb3b568f70f2bDouglas Gregor Instantiated = cast_or_null<FunctionDecl>(VisitCXXMethodDecl(DMethod, 839a735b206fdb5c15767a45289e1ffb3b568f70f2bDouglas Gregor InstParams)); 840a735b206fdb5c15767a45289e1ffb3b568f70f2bDouglas Gregor else 841a735b206fdb5c15767a45289e1ffb3b568f70f2bDouglas Gregor Instantiated = cast_or_null<FunctionDecl>(VisitFunctionDecl( 842a735b206fdb5c15767a45289e1ffb3b568f70f2bDouglas Gregor D->getTemplatedDecl(), 843a735b206fdb5c15767a45289e1ffb3b568f70f2bDouglas Gregor InstParams)); 844a735b206fdb5c15767a45289e1ffb3b568f70f2bDouglas Gregor 845a735b206fdb5c15767a45289e1ffb3b568f70f2bDouglas Gregor if (!Instantiated) 846d60e105e6d1624da647ef7dd35a9cf6fad1b763eDouglas Gregor return 0; 847d60e105e6d1624da647ef7dd35a9cf6fad1b763eDouglas Gregor 84846460a68f6508775e98c19b4bb8454bb471aac24John McCall Instantiated->setAccess(D->getAccess()); 84946460a68f6508775e98c19b4bb8454bb471aac24John McCall 8501eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Link the instantiated function template declaration to the function 851d60e105e6d1624da647ef7dd35a9cf6fad1b763eDouglas Gregor // template from which it was instantiated. 85237d68185088947322a97eabdc1c0714b0debd929Douglas Gregor FunctionTemplateDecl *InstTemplate 853a735b206fdb5c15767a45289e1ffb3b568f70f2bDouglas Gregor = Instantiated->getDescribedFunctionTemplate(); 85437d68185088947322a97eabdc1c0714b0debd929Douglas Gregor InstTemplate->setAccess(D->getAccess()); 855a735b206fdb5c15767a45289e1ffb3b568f70f2bDouglas Gregor assert(InstTemplate && 856a735b206fdb5c15767a45289e1ffb3b568f70f2bDouglas Gregor "VisitFunctionDecl/CXXMethodDecl didn't create a template!"); 857e976ffe18ee60b81641423f42ff6feec2f5e3cb7John McCall 858b1a56e767cfb645fcb25027ab728dd5824d92615John McCall bool isFriend = (InstTemplate->getFriendObjectKind() != Decl::FOK_None); 859b1a56e767cfb645fcb25027ab728dd5824d92615John McCall 860e976ffe18ee60b81641423f42ff6feec2f5e3cb7John McCall // Link the instantiation back to the pattern *unless* this is a 861e976ffe18ee60b81641423f42ff6feec2f5e3cb7John McCall // non-definition friend declaration. 862e976ffe18ee60b81641423f42ff6feec2f5e3cb7John McCall if (!InstTemplate->getInstantiatedFromMemberTemplate() && 863b1a56e767cfb645fcb25027ab728dd5824d92615John McCall !(isFriend && !D->getTemplatedDecl()->isThisDeclarationADefinition())) 864a735b206fdb5c15767a45289e1ffb3b568f70f2bDouglas Gregor InstTemplate->setInstantiatedFromMemberTemplate(D); 865a735b206fdb5c15767a45289e1ffb3b568f70f2bDouglas Gregor 866b1a56e767cfb645fcb25027ab728dd5824d92615John McCall // Make declarations visible in the appropriate context. 867b1a56e767cfb645fcb25027ab728dd5824d92615John McCall if (!isFriend) 868a735b206fdb5c15767a45289e1ffb3b568f70f2bDouglas Gregor Owner->addDecl(InstTemplate); 869b1a56e767cfb645fcb25027ab728dd5824d92615John McCall 870d60e105e6d1624da647ef7dd35a9cf6fad1b763eDouglas Gregor return InstTemplate; 871d60e105e6d1624da647ef7dd35a9cf6fad1b763eDouglas Gregor} 872d60e105e6d1624da647ef7dd35a9cf6fad1b763eDouglas Gregor 873d475b8d9e6f5ff0e6ab8d15667ce8a64c7cb9a4dDouglas GregorDecl *TemplateDeclInstantiator::VisitCXXRecordDecl(CXXRecordDecl *D) { 874d475b8d9e6f5ff0e6ab8d15667ce8a64c7cb9a4dDouglas Gregor CXXRecordDecl *PrevDecl = 0; 875d475b8d9e6f5ff0e6ab8d15667ce8a64c7cb9a4dDouglas Gregor if (D->isInjectedClassName()) 876d475b8d9e6f5ff0e6ab8d15667ce8a64c7cb9a4dDouglas Gregor PrevDecl = cast<CXXRecordDecl>(Owner); 8776c1c1b8c6ca743a5b6b4c81f9ac56392c12c7457John McCall else if (D->getPreviousDeclaration()) { 8787c1e98f1cb37b40e619a0c8aee8b337f037b432bDouglas Gregor NamedDecl *Prev = SemaRef.FindInstantiatedDecl(D->getLocation(), 8797c1e98f1cb37b40e619a0c8aee8b337f037b432bDouglas Gregor D->getPreviousDeclaration(), 8806c1c1b8c6ca743a5b6b4c81f9ac56392c12c7457John McCall TemplateArgs); 8816c1c1b8c6ca743a5b6b4c81f9ac56392c12c7457John McCall if (!Prev) return 0; 8826c1c1b8c6ca743a5b6b4c81f9ac56392c12c7457John McCall PrevDecl = cast<CXXRecordDecl>(Prev); 8836c1c1b8c6ca743a5b6b4c81f9ac56392c12c7457John McCall } 884d475b8d9e6f5ff0e6ab8d15667ce8a64c7cb9a4dDouglas Gregor 885d475b8d9e6f5ff0e6ab8d15667ce8a64c7cb9a4dDouglas Gregor CXXRecordDecl *Record 8861eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump = CXXRecordDecl::Create(SemaRef.Context, D->getTagKind(), Owner, 887741dd9a7e1d63e4e385b657e4ce11c5d96d44f72Douglas Gregor D->getLocation(), D->getIdentifier(), 888741dd9a7e1d63e4e385b657e4ce11c5d96d44f72Douglas Gregor D->getTagKeywordLoc(), PrevDecl); 889b6217665c6a987f2d6c8665fd70365d7719ac4dfJohn McCall 890b6217665c6a987f2d6c8665fd70365d7719ac4dfJohn McCall // Substitute the nested name specifier, if any. 891b6217665c6a987f2d6c8665fd70365d7719ac4dfJohn McCall if (SubstQualifier(D, Record)) 892b6217665c6a987f2d6c8665fd70365d7719ac4dfJohn McCall return 0; 893b6217665c6a987f2d6c8665fd70365d7719ac4dfJohn McCall 894d475b8d9e6f5ff0e6ab8d15667ce8a64c7cb9a4dDouglas Gregor Record->setImplicit(D->isImplicit()); 895eaba1af8529c381d7bfd4dd0a8b48d2c01647972Eli Friedman // FIXME: Check against AS_none is an ugly hack to work around the issue that 896eaba1af8529c381d7bfd4dd0a8b48d2c01647972Eli Friedman // the tag decls introduced by friend class declarations don't have an access 897eaba1af8529c381d7bfd4dd0a8b48d2c01647972Eli Friedman // specifier. Remove once this area of the code gets sorted out. 898eaba1af8529c381d7bfd4dd0a8b48d2c01647972Eli Friedman if (D->getAccess() != AS_none) 899eaba1af8529c381d7bfd4dd0a8b48d2c01647972Eli Friedman Record->setAccess(D->getAccess()); 900d475b8d9e6f5ff0e6ab8d15667ce8a64c7cb9a4dDouglas Gregor if (!D->isInjectedClassName()) 901f6b1185f0a8a209c06dfc1efdb6a59cc851e970cDouglas Gregor Record->setInstantiationOfMemberClass(D, TSK_ImplicitInstantiation); 902d475b8d9e6f5ff0e6ab8d15667ce8a64c7cb9a4dDouglas Gregor 90302cace78cf48cc26686bd5b07c78606abca13bcdJohn McCall // If the original function was part of a friend declaration, 90402cace78cf48cc26686bd5b07c78606abca13bcdJohn McCall // inherit its namespace state. 90502cace78cf48cc26686bd5b07c78606abca13bcdJohn McCall if (Decl::FriendObjectKind FOK = D->getFriendObjectKind()) 90602cace78cf48cc26686bd5b07c78606abca13bcdJohn McCall Record->setObjectOfFriendDecl(FOK == Decl::FOK_Declared); 90702cace78cf48cc26686bd5b07c78606abca13bcdJohn McCall 9089901c57806f7e36736ed1616e6ab3eebcc99b78cDouglas Gregor // Make sure that anonymous structs and unions are recorded. 9099901c57806f7e36736ed1616e6ab3eebcc99b78cDouglas Gregor if (D->isAnonymousStructOrUnion()) { 9109901c57806f7e36736ed1616e6ab3eebcc99b78cDouglas Gregor Record->setAnonymousStructOrUnion(true); 9117a126a474fdde06382b315b4e3d8ef0a21d4dc31Sebastian Redl if (Record->getDeclContext()->getRedeclContext()->isFunctionOrMethod()) 9129901c57806f7e36736ed1616e6ab3eebcc99b78cDouglas Gregor SemaRef.CurrentInstantiationScope->InstantiatedLocal(D, Record); 9139901c57806f7e36736ed1616e6ab3eebcc99b78cDouglas Gregor } 914d8b285fee4471f393da8ee30f552ceacdc362afaAnders Carlsson 91517945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis Owner->addDecl(Record); 916d475b8d9e6f5ff0e6ab8d15667ce8a64c7cb9a4dDouglas Gregor return Record; 917d475b8d9e6f5ff0e6ab8d15667ce8a64c7cb9a4dDouglas Gregor} 918d475b8d9e6f5ff0e6ab8d15667ce8a64c7cb9a4dDouglas Gregor 91902cace78cf48cc26686bd5b07c78606abca13bcdJohn McCall/// Normal class members are of more specific types and therefore 92002cace78cf48cc26686bd5b07c78606abca13bcdJohn McCall/// don't make it here. This function serves two purposes: 92102cace78cf48cc26686bd5b07c78606abca13bcdJohn McCall/// 1) instantiating function templates 92202cace78cf48cc26686bd5b07c78606abca13bcdJohn McCall/// 2) substituting friend declarations 92302cace78cf48cc26686bd5b07c78606abca13bcdJohn McCall/// FIXME: preserve function definitions in case #2 9247557a1348d2821dce126a778aa7acd7a00b814fdDouglas GregorDecl *TemplateDeclInstantiator::VisitFunctionDecl(FunctionDecl *D, 925a735b206fdb5c15767a45289e1ffb3b568f70f2bDouglas Gregor TemplateParameterList *TemplateParams) { 926127102b5196ffe04bdb70fd553fe62c265ab10a9Douglas Gregor // Check whether there is already a function template specialization for 927127102b5196ffe04bdb70fd553fe62c265ab10a9Douglas Gregor // this declaration. 928127102b5196ffe04bdb70fd553fe62c265ab10a9Douglas Gregor FunctionTemplateDecl *FunctionTemplate = D->getDescribedFunctionTemplate(); 929127102b5196ffe04bdb70fd553fe62c265ab10a9Douglas Gregor void *InsertPos = 0; 930b0cb022daec8671406ab25f4b5d5a6d48d823bc4John McCall if (FunctionTemplate && !TemplateParams) { 93124bae92f08ae098cc50a602d8cf1273b423e14daDouglas Gregor std::pair<const TemplateArgument *, unsigned> Innermost 93224bae92f08ae098cc50a602d8cf1273b423e14daDouglas Gregor = TemplateArgs.getInnermost(); 9331eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9342c853e401ca406d417eb916e867226050e7be06bArgyrios Kyrtzidis FunctionDecl *SpecFunc 9352c853e401ca406d417eb916e867226050e7be06bArgyrios Kyrtzidis = FunctionTemplate->findSpecialization(Innermost.first, Innermost.second, 9362c853e401ca406d417eb916e867226050e7be06bArgyrios Kyrtzidis InsertPos); 9371eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 938127102b5196ffe04bdb70fd553fe62c265ab10a9Douglas Gregor // If we already have a function template specialization, return it. 9392c853e401ca406d417eb916e867226050e7be06bArgyrios Kyrtzidis if (SpecFunc) 9402c853e401ca406d417eb916e867226050e7be06bArgyrios Kyrtzidis return SpecFunc; 941127102b5196ffe04bdb70fd553fe62c265ab10a9Douglas Gregor } 9421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 943b0cb022daec8671406ab25f4b5d5a6d48d823bc4John McCall bool isFriend; 944b0cb022daec8671406ab25f4b5d5a6d48d823bc4John McCall if (FunctionTemplate) 945b0cb022daec8671406ab25f4b5d5a6d48d823bc4John McCall isFriend = (FunctionTemplate->getFriendObjectKind() != Decl::FOK_None); 946b0cb022daec8671406ab25f4b5d5a6d48d823bc4John McCall else 947b0cb022daec8671406ab25f4b5d5a6d48d823bc4John McCall isFriend = (D->getFriendObjectKind() != Decl::FOK_None); 948b0cb022daec8671406ab25f4b5d5a6d48d823bc4John McCall 94979c2278a66d8fc0943774d1b7c71a32f7764e1e2Douglas Gregor bool MergeWithParentScope = (TemplateParams != 0) || 950b212d9a8e10308cde5b7a1ce07bd59d8df14fa06Douglas Gregor Owner->isFunctionOrMethod() || 95179c2278a66d8fc0943774d1b7c71a32f7764e1e2Douglas Gregor !(isa<Decl>(Owner) && 95279c2278a66d8fc0943774d1b7c71a32f7764e1e2Douglas Gregor cast<Decl>(Owner)->isDefinedOutsideFunctionOrMethod()); 9532a7fb27913999d132cf9e10e03dc5271faa2e9d3John McCall LocalInstantiationScope Scope(SemaRef, MergeWithParentScope); 9541eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 955e53060fa78ad7e98352049f72787bdb7543e2a48Douglas Gregor llvm::SmallVector<ParmVarDecl *, 4> Params; 95621ef0fa27b0783ec0bc6aa5b524feb2ec840f952John McCall TypeSourceInfo *TInfo = D->getTypeSourceInfo(); 95721ef0fa27b0783ec0bc6aa5b524feb2ec840f952John McCall TInfo = SubstFunctionType(D, Params); 95821ef0fa27b0783ec0bc6aa5b524feb2ec840f952John McCall if (!TInfo) 9592dc0e64e57b2a1786fa53a7dbd1d5c8e255eadb0Douglas Gregor return 0; 96021ef0fa27b0783ec0bc6aa5b524feb2ec840f952John McCall QualType T = TInfo->getType(); 961fd810b1386ed29b250e7d522ea826a65c815e49dJohn McCall 962d325daa506338ab86f9dd468b48fd010673f49a6John McCall NestedNameSpecifier *Qualifier = D->getQualifier(); 963d325daa506338ab86f9dd468b48fd010673f49a6John McCall if (Qualifier) { 964d325daa506338ab86f9dd468b48fd010673f49a6John McCall Qualifier = SemaRef.SubstNestedNameSpecifier(Qualifier, 965d325daa506338ab86f9dd468b48fd010673f49a6John McCall D->getQualifierRange(), 966d325daa506338ab86f9dd468b48fd010673f49a6John McCall TemplateArgs); 967d325daa506338ab86f9dd468b48fd010673f49a6John McCall if (!Qualifier) return 0; 968d325daa506338ab86f9dd468b48fd010673f49a6John McCall } 969d325daa506338ab86f9dd468b48fd010673f49a6John McCall 97068b6b87b6beb7922fc2c8ab923ba2ce125490363John McCall // If we're instantiating a local function declaration, put the result 97168b6b87b6beb7922fc2c8ab923ba2ce125490363John McCall // in the owner; otherwise we need to find the instantiated context. 97268b6b87b6beb7922fc2c8ab923ba2ce125490363John McCall DeclContext *DC; 97368b6b87b6beb7922fc2c8ab923ba2ce125490363John McCall if (D->getDeclContext()->isFunctionOrMethod()) 97468b6b87b6beb7922fc2c8ab923ba2ce125490363John McCall DC = Owner; 975d325daa506338ab86f9dd468b48fd010673f49a6John McCall else if (isFriend && Qualifier) { 976d325daa506338ab86f9dd468b48fd010673f49a6John McCall CXXScopeSpec SS; 977d325daa506338ab86f9dd468b48fd010673f49a6John McCall SS.setScopeRep(Qualifier); 978d325daa506338ab86f9dd468b48fd010673f49a6John McCall SS.setRange(D->getQualifierRange()); 979d325daa506338ab86f9dd468b48fd010673f49a6John McCall DC = SemaRef.computeDeclContext(SS); 980d325daa506338ab86f9dd468b48fd010673f49a6John McCall if (!DC) return 0; 981d325daa506338ab86f9dd468b48fd010673f49a6John McCall } else { 9827c1e98f1cb37b40e619a0c8aee8b337f037b432bDouglas Gregor DC = SemaRef.FindInstantiatedContext(D->getLocation(), D->getDeclContext(), 9837c1e98f1cb37b40e619a0c8aee8b337f037b432bDouglas Gregor TemplateArgs); 984d325daa506338ab86f9dd468b48fd010673f49a6John McCall } 98568b6b87b6beb7922fc2c8ab923ba2ce125490363John McCall 98602cace78cf48cc26686bd5b07c78606abca13bcdJohn McCall FunctionDecl *Function = 9871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump FunctionDecl::Create(SemaRef.Context, DC, D->getLocation(), 98821ef0fa27b0783ec0bc6aa5b524feb2ec840f952John McCall D->getDeclName(), T, TInfo, 98916573fa9705b546b7597c273b25b85d6321e2b33Douglas Gregor D->getStorageClass(), D->getStorageClassAsWritten(), 9900130f3cc4ccd5f46361c48d5fe94133d74619424Douglas Gregor D->isInlineSpecified(), D->hasWrittenPrototype()); 991b6217665c6a987f2d6c8665fd70365d7719ac4dfJohn McCall 992d325daa506338ab86f9dd468b48fd010673f49a6John McCall if (Qualifier) 993d325daa506338ab86f9dd468b48fd010673f49a6John McCall Function->setQualifierInfo(Qualifier, D->getQualifierRange()); 994b6217665c6a987f2d6c8665fd70365d7719ac4dfJohn McCall 995b1a56e767cfb645fcb25027ab728dd5824d92615John McCall DeclContext *LexicalDC = Owner; 996b1a56e767cfb645fcb25027ab728dd5824d92615John McCall if (!isFriend && D->isOutOfLine()) { 997b1a56e767cfb645fcb25027ab728dd5824d92615John McCall assert(D->getDeclContext()->isFileContext()); 998b1a56e767cfb645fcb25027ab728dd5824d92615John McCall LexicalDC = D->getDeclContext(); 999b1a56e767cfb645fcb25027ab728dd5824d92615John McCall } 1000b1a56e767cfb645fcb25027ab728dd5824d92615John McCall 1001b1a56e767cfb645fcb25027ab728dd5824d92615John McCall Function->setLexicalDeclContext(LexicalDC); 10021eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1003e53060fa78ad7e98352049f72787bdb7543e2a48Douglas Gregor // Attach the parameters 1004e53060fa78ad7e98352049f72787bdb7543e2a48Douglas Gregor for (unsigned P = 0; P < Params.size(); ++P) 10053019c444c672938c57f5573840071ecd73425ee7John McCall if (Params[P]) 10063019c444c672938c57f5573840071ecd73425ee7John McCall Params[P]->setOwningFunction(Function); 1007838db383b69b9fb55f55c8e9546477df198a4faaDouglas Gregor Function->setParams(Params.data(), Params.size()); 100802cace78cf48cc26686bd5b07c78606abca13bcdJohn McCall 1009ac7c2c8a9d47df7d652364af3043c41816a18fa4Douglas Gregor SourceLocation InstantiateAtPOI; 1010a735b206fdb5c15767a45289e1ffb3b568f70f2bDouglas Gregor if (TemplateParams) { 1011a735b206fdb5c15767a45289e1ffb3b568f70f2bDouglas Gregor // Our resulting instantiation is actually a function template, since we 1012a735b206fdb5c15767a45289e1ffb3b568f70f2bDouglas Gregor // are substituting only the outer template parameters. For example, given 1013a735b206fdb5c15767a45289e1ffb3b568f70f2bDouglas Gregor // 1014a735b206fdb5c15767a45289e1ffb3b568f70f2bDouglas Gregor // template<typename T> 1015a735b206fdb5c15767a45289e1ffb3b568f70f2bDouglas Gregor // struct X { 1016a735b206fdb5c15767a45289e1ffb3b568f70f2bDouglas Gregor // template<typename U> friend void f(T, U); 1017a735b206fdb5c15767a45289e1ffb3b568f70f2bDouglas Gregor // }; 1018a735b206fdb5c15767a45289e1ffb3b568f70f2bDouglas Gregor // 1019a735b206fdb5c15767a45289e1ffb3b568f70f2bDouglas Gregor // X<int> x; 1020a735b206fdb5c15767a45289e1ffb3b568f70f2bDouglas Gregor // 1021a735b206fdb5c15767a45289e1ffb3b568f70f2bDouglas Gregor // We are instantiating the friend function template "f" within X<int>, 1022a735b206fdb5c15767a45289e1ffb3b568f70f2bDouglas Gregor // which means substituting int for T, but leaving "f" as a friend function 1023a735b206fdb5c15767a45289e1ffb3b568f70f2bDouglas Gregor // template. 1024a735b206fdb5c15767a45289e1ffb3b568f70f2bDouglas Gregor // Build the function template itself. 1025d325daa506338ab86f9dd468b48fd010673f49a6John McCall FunctionTemplate = FunctionTemplateDecl::Create(SemaRef.Context, DC, 1026a735b206fdb5c15767a45289e1ffb3b568f70f2bDouglas Gregor Function->getLocation(), 1027a735b206fdb5c15767a45289e1ffb3b568f70f2bDouglas Gregor Function->getDeclName(), 1028a735b206fdb5c15767a45289e1ffb3b568f70f2bDouglas Gregor TemplateParams, Function); 1029a735b206fdb5c15767a45289e1ffb3b568f70f2bDouglas Gregor Function->setDescribedFunctionTemplate(FunctionTemplate); 1030b1a56e767cfb645fcb25027ab728dd5824d92615John McCall 1031b1a56e767cfb645fcb25027ab728dd5824d92615John McCall FunctionTemplate->setLexicalDeclContext(LexicalDC); 1032d325daa506338ab86f9dd468b48fd010673f49a6John McCall 1033d325daa506338ab86f9dd468b48fd010673f49a6John McCall if (isFriend && D->isThisDeclarationADefinition()) { 1034d325daa506338ab86f9dd468b48fd010673f49a6John McCall // TODO: should we remember this connection regardless of whether 1035d325daa506338ab86f9dd468b48fd010673f49a6John McCall // the friend declaration provided a body? 1036d325daa506338ab86f9dd468b48fd010673f49a6John McCall FunctionTemplate->setInstantiatedFromMemberTemplate( 1037d325daa506338ab86f9dd468b48fd010673f49a6John McCall D->getDescribedFunctionTemplate()); 1038d325daa506338ab86f9dd468b48fd010673f49a6John McCall } 103966724ea67d7d598b937d86fa66f03f09a1c758f3Douglas Gregor } else if (FunctionTemplate) { 104066724ea67d7d598b937d86fa66f03f09a1c758f3Douglas Gregor // Record this function template specialization. 104124bae92f08ae098cc50a602d8cf1273b423e14daDouglas Gregor std::pair<const TemplateArgument *, unsigned> Innermost 104224bae92f08ae098cc50a602d8cf1273b423e14daDouglas Gregor = TemplateArgs.getInnermost(); 1043838db383b69b9fb55f55c8e9546477df198a4faaDouglas Gregor Function->setFunctionTemplateSpecialization(FunctionTemplate, 1044910f8008fea79120489a53593fe971b0b8a4a740Douglas Gregor TemplateArgumentList::CreateCopy(SemaRef.Context, 104524bae92f08ae098cc50a602d8cf1273b423e14daDouglas Gregor Innermost.first, 104624bae92f08ae098cc50a602d8cf1273b423e14daDouglas Gregor Innermost.second), 104766724ea67d7d598b937d86fa66f03f09a1c758f3Douglas Gregor InsertPos); 1048d325daa506338ab86f9dd468b48fd010673f49a6John McCall } else if (isFriend && D->isThisDeclarationADefinition()) { 1049d325daa506338ab86f9dd468b48fd010673f49a6John McCall // TODO: should we remember this connection regardless of whether 1050d325daa506338ab86f9dd468b48fd010673f49a6John McCall // the friend declaration provided a body? 1051d325daa506338ab86f9dd468b48fd010673f49a6John McCall Function->setInstantiationOfMemberFunction(D, TSK_ImplicitInstantiation); 105202cace78cf48cc26686bd5b07c78606abca13bcdJohn McCall } 1053a735b206fdb5c15767a45289e1ffb3b568f70f2bDouglas Gregor 1054e53060fa78ad7e98352049f72787bdb7543e2a48Douglas Gregor if (InitFunctionInstantiation(Function, D)) 1055e53060fa78ad7e98352049f72787bdb7543e2a48Douglas Gregor Function->setInvalidDecl(); 10561eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1057e53060fa78ad7e98352049f72787bdb7543e2a48Douglas Gregor bool Redeclaration = false; 1058af2094e7cecadf36667deb61a83587ffdd979bd3John McCall bool isExplicitSpecialization = false; 1059a735b206fdb5c15767a45289e1ffb3b568f70f2bDouglas Gregor 10606826314938f8510cd1a6b03b5d032592456ae27bJohn McCall LookupResult Previous(SemaRef, Function->getDeclName(), SourceLocation(), 10616826314938f8510cd1a6b03b5d032592456ae27bJohn McCall Sema::LookupOrdinaryName, Sema::ForRedeclaration); 10626826314938f8510cd1a6b03b5d032592456ae27bJohn McCall 1063af2094e7cecadf36667deb61a83587ffdd979bd3John McCall if (DependentFunctionTemplateSpecializationInfo *Info 1064af2094e7cecadf36667deb61a83587ffdd979bd3John McCall = D->getDependentSpecializationInfo()) { 1065af2094e7cecadf36667deb61a83587ffdd979bd3John McCall assert(isFriend && "non-friend has dependent specialization info?"); 1066af2094e7cecadf36667deb61a83587ffdd979bd3John McCall 1067af2094e7cecadf36667deb61a83587ffdd979bd3John McCall // This needs to be set now for future sanity. 1068af2094e7cecadf36667deb61a83587ffdd979bd3John McCall Function->setObjectOfFriendDecl(/*HasPrevious*/ true); 1069af2094e7cecadf36667deb61a83587ffdd979bd3John McCall 1070af2094e7cecadf36667deb61a83587ffdd979bd3John McCall // Instantiate the explicit template arguments. 1071af2094e7cecadf36667deb61a83587ffdd979bd3John McCall TemplateArgumentListInfo ExplicitArgs(Info->getLAngleLoc(), 1072af2094e7cecadf36667deb61a83587ffdd979bd3John McCall Info->getRAngleLoc()); 1073e02e26293cf8e3bad1059b39cea75c6582896da6Douglas Gregor if (SemaRef.Subst(Info->getTemplateArgs(), Info->getNumTemplateArgs(), 1074e02e26293cf8e3bad1059b39cea75c6582896da6Douglas Gregor ExplicitArgs, TemplateArgs)) 1075e02e26293cf8e3bad1059b39cea75c6582896da6Douglas Gregor return 0; 1076af2094e7cecadf36667deb61a83587ffdd979bd3John McCall 1077af2094e7cecadf36667deb61a83587ffdd979bd3John McCall // Map the candidate templates to their instantiations. 1078af2094e7cecadf36667deb61a83587ffdd979bd3John McCall for (unsigned I = 0, E = Info->getNumTemplates(); I != E; ++I) { 1079af2094e7cecadf36667deb61a83587ffdd979bd3John McCall Decl *Temp = SemaRef.FindInstantiatedDecl(D->getLocation(), 1080af2094e7cecadf36667deb61a83587ffdd979bd3John McCall Info->getTemplate(I), 1081af2094e7cecadf36667deb61a83587ffdd979bd3John McCall TemplateArgs); 1082af2094e7cecadf36667deb61a83587ffdd979bd3John McCall if (!Temp) return 0; 1083af2094e7cecadf36667deb61a83587ffdd979bd3John McCall 1084af2094e7cecadf36667deb61a83587ffdd979bd3John McCall Previous.addDecl(cast<FunctionTemplateDecl>(Temp)); 1085af2094e7cecadf36667deb61a83587ffdd979bd3John McCall } 1086af2094e7cecadf36667deb61a83587ffdd979bd3John McCall 1087af2094e7cecadf36667deb61a83587ffdd979bd3John McCall if (SemaRef.CheckFunctionTemplateSpecialization(Function, 1088af2094e7cecadf36667deb61a83587ffdd979bd3John McCall &ExplicitArgs, 1089af2094e7cecadf36667deb61a83587ffdd979bd3John McCall Previous)) 1090af2094e7cecadf36667deb61a83587ffdd979bd3John McCall Function->setInvalidDecl(); 1091af2094e7cecadf36667deb61a83587ffdd979bd3John McCall 1092af2094e7cecadf36667deb61a83587ffdd979bd3John McCall isExplicitSpecialization = true; 1093af2094e7cecadf36667deb61a83587ffdd979bd3John McCall 1094af2094e7cecadf36667deb61a83587ffdd979bd3John McCall } else if (TemplateParams || !FunctionTemplate) { 1095a735b206fdb5c15767a45289e1ffb3b568f70f2bDouglas Gregor // Look only into the namespace where the friend would be declared to 1096a735b206fdb5c15767a45289e1ffb3b568f70f2bDouglas Gregor // find a previous declaration. This is the innermost enclosing namespace, 1097a735b206fdb5c15767a45289e1ffb3b568f70f2bDouglas Gregor // as described in ActOnFriendFunctionDecl. 10986826314938f8510cd1a6b03b5d032592456ae27bJohn McCall SemaRef.LookupQualifiedName(Previous, DC); 1099a735b206fdb5c15767a45289e1ffb3b568f70f2bDouglas Gregor 1100a735b206fdb5c15767a45289e1ffb3b568f70f2bDouglas Gregor // In C++, the previous declaration we find might be a tag type 1101a735b206fdb5c15767a45289e1ffb3b568f70f2bDouglas Gregor // (class or enum). In this case, the new declaration will hide the 1102a735b206fdb5c15767a45289e1ffb3b568f70f2bDouglas Gregor // tag type. Note that this does does not apply if we're declaring a 1103a735b206fdb5c15767a45289e1ffb3b568f70f2bDouglas Gregor // typedef (C++ [dcl.typedef]p4). 11046826314938f8510cd1a6b03b5d032592456ae27bJohn McCall if (Previous.isSingleTagDecl()) 11056826314938f8510cd1a6b03b5d032592456ae27bJohn McCall Previous.clear(); 1106a735b206fdb5c15767a45289e1ffb3b568f70f2bDouglas Gregor } 1107a735b206fdb5c15767a45289e1ffb3b568f70f2bDouglas Gregor 11089f54ad4381370c6b771424b53d219e661d6d6706John McCall SemaRef.CheckFunctionDeclaration(/*Scope*/ 0, Function, Previous, 1109c80e8115278ba1537c8b517a083ecbd0a018b579Peter Collingbourne isExplicitSpecialization, Redeclaration); 1110e53060fa78ad7e98352049f72787bdb7543e2a48Douglas Gregor 111176d326448d7e4c10b2896edc2ee855d1e68d1b88John McCall NamedDecl *PrincipalDecl = (TemplateParams 111276d326448d7e4c10b2896edc2ee855d1e68d1b88John McCall ? cast<NamedDecl>(FunctionTemplate) 111376d326448d7e4c10b2896edc2ee855d1e68d1b88John McCall : Function); 111476d326448d7e4c10b2896edc2ee855d1e68d1b88John McCall 1115a735b206fdb5c15767a45289e1ffb3b568f70f2bDouglas Gregor // If the original function was part of a friend declaration, 1116a735b206fdb5c15767a45289e1ffb3b568f70f2bDouglas Gregor // inherit its namespace state and add it to the owner. 1117d325daa506338ab86f9dd468b48fd010673f49a6John McCall if (isFriend) { 11186826314938f8510cd1a6b03b5d032592456ae27bJohn McCall NamedDecl *PrevDecl; 111976d326448d7e4c10b2896edc2ee855d1e68d1b88John McCall if (TemplateParams) 1120a735b206fdb5c15767a45289e1ffb3b568f70f2bDouglas Gregor PrevDecl = FunctionTemplate->getPreviousDeclaration(); 112176d326448d7e4c10b2896edc2ee855d1e68d1b88John McCall else 1122a735b206fdb5c15767a45289e1ffb3b568f70f2bDouglas Gregor PrevDecl = Function->getPreviousDeclaration(); 112376d326448d7e4c10b2896edc2ee855d1e68d1b88John McCall 112476d326448d7e4c10b2896edc2ee855d1e68d1b88John McCall PrincipalDecl->setObjectOfFriendDecl(PrevDecl != 0); 112576d326448d7e4c10b2896edc2ee855d1e68d1b88John McCall DC->makeDeclVisibleInContext(PrincipalDecl, /*Recoverable=*/ false); 1126ab297ac4d3f7c078a34c75493b840ef6b5801be3Gabor Greif 112777535dfde258765c056ef4c6786ef56cc48f0c76Gabor Greif bool queuedInstantiation = false; 1128ab297ac4d3f7c078a34c75493b840ef6b5801be3Gabor Greif 1129238058c372cfb7bdaf489f51171eb1380ebfd6a6Douglas Gregor if (!SemaRef.getLangOptions().CPlusPlus0x && 1130238058c372cfb7bdaf489f51171eb1380ebfd6a6Douglas Gregor D->isThisDeclarationADefinition()) { 1131238058c372cfb7bdaf489f51171eb1380ebfd6a6Douglas Gregor // Check for a function body. 1132238058c372cfb7bdaf489f51171eb1380ebfd6a6Douglas Gregor const FunctionDecl *Definition = 0; 113306a54a38be5054c910ffc92db60edab23f9ea105Argyrios Kyrtzidis if (Function->hasBody(Definition) && 1134238058c372cfb7bdaf489f51171eb1380ebfd6a6Douglas Gregor Definition->getTemplateSpecializationKind() == TSK_Undeclared) { 1135238058c372cfb7bdaf489f51171eb1380ebfd6a6Douglas Gregor SemaRef.Diag(Function->getLocation(), diag::err_redefinition) 1136238058c372cfb7bdaf489f51171eb1380ebfd6a6Douglas Gregor << Function->getDeclName(); 1137238058c372cfb7bdaf489f51171eb1380ebfd6a6Douglas Gregor SemaRef.Diag(Definition->getLocation(), diag::note_previous_definition); 1138238058c372cfb7bdaf489f51171eb1380ebfd6a6Douglas Gregor Function->setInvalidDecl(); 1139238058c372cfb7bdaf489f51171eb1380ebfd6a6Douglas Gregor } 1140238058c372cfb7bdaf489f51171eb1380ebfd6a6Douglas Gregor // Check for redefinitions due to other instantiations of this or 1141238058c372cfb7bdaf489f51171eb1380ebfd6a6Douglas Gregor // a similar friend function. 1142238058c372cfb7bdaf489f51171eb1380ebfd6a6Douglas Gregor else for (FunctionDecl::redecl_iterator R = Function->redecls_begin(), 1143238058c372cfb7bdaf489f51171eb1380ebfd6a6Douglas Gregor REnd = Function->redecls_end(); 1144238058c372cfb7bdaf489f51171eb1380ebfd6a6Douglas Gregor R != REnd; ++R) { 114513a8affbb87cdb869adabe2a6e5998559f2598c4Gabor Greif if (*R == Function) 114613a8affbb87cdb869adabe2a6e5998559f2598c4Gabor Greif continue; 1147ab297ac4d3f7c078a34c75493b840ef6b5801be3Gabor Greif switch (R->getFriendObjectKind()) { 1148ab297ac4d3f7c078a34c75493b840ef6b5801be3Gabor Greif case Decl::FOK_None: 1149ab297ac4d3f7c078a34c75493b840ef6b5801be3Gabor Greif if (!queuedInstantiation && R->isUsed(false)) { 1150ab297ac4d3f7c078a34c75493b840ef6b5801be3Gabor Greif if (MemberSpecializationInfo *MSInfo 1151ab297ac4d3f7c078a34c75493b840ef6b5801be3Gabor Greif = Function->getMemberSpecializationInfo()) { 1152ab297ac4d3f7c078a34c75493b840ef6b5801be3Gabor Greif if (MSInfo->getPointOfInstantiation().isInvalid()) { 1153ab297ac4d3f7c078a34c75493b840ef6b5801be3Gabor Greif SourceLocation Loc = R->getLocation(); // FIXME 1154ab297ac4d3f7c078a34c75493b840ef6b5801be3Gabor Greif MSInfo->setPointOfInstantiation(Loc); 1155ab297ac4d3f7c078a34c75493b840ef6b5801be3Gabor Greif SemaRef.PendingLocalImplicitInstantiations.push_back( 1156ab297ac4d3f7c078a34c75493b840ef6b5801be3Gabor Greif std::make_pair(Function, Loc)); 1157ab297ac4d3f7c078a34c75493b840ef6b5801be3Gabor Greif queuedInstantiation = true; 1158ab297ac4d3f7c078a34c75493b840ef6b5801be3Gabor Greif } 1159ab297ac4d3f7c078a34c75493b840ef6b5801be3Gabor Greif } 1160ab297ac4d3f7c078a34c75493b840ef6b5801be3Gabor Greif } 1161ab297ac4d3f7c078a34c75493b840ef6b5801be3Gabor Greif break; 1162ab297ac4d3f7c078a34c75493b840ef6b5801be3Gabor Greif default: 1163238058c372cfb7bdaf489f51171eb1380ebfd6a6Douglas Gregor if (const FunctionDecl *RPattern 11646a557d8f6b3d7a747a0b57960d4b86f05ba2e53cGabor Greif = R->getTemplateInstantiationPattern()) 116506a54a38be5054c910ffc92db60edab23f9ea105Argyrios Kyrtzidis if (RPattern->hasBody(RPattern)) { 1166238058c372cfb7bdaf489f51171eb1380ebfd6a6Douglas Gregor SemaRef.Diag(Function->getLocation(), diag::err_redefinition) 1167238058c372cfb7bdaf489f51171eb1380ebfd6a6Douglas Gregor << Function->getDeclName(); 11686a557d8f6b3d7a747a0b57960d4b86f05ba2e53cGabor Greif SemaRef.Diag(R->getLocation(), diag::note_previous_definition); 1169238058c372cfb7bdaf489f51171eb1380ebfd6a6Douglas Gregor Function->setInvalidDecl(); 1170238058c372cfb7bdaf489f51171eb1380ebfd6a6Douglas Gregor break; 1171238058c372cfb7bdaf489f51171eb1380ebfd6a6Douglas Gregor } 1172238058c372cfb7bdaf489f51171eb1380ebfd6a6Douglas Gregor } 1173238058c372cfb7bdaf489f51171eb1380ebfd6a6Douglas Gregor } 1174238058c372cfb7bdaf489f51171eb1380ebfd6a6Douglas Gregor } 1175a735b206fdb5c15767a45289e1ffb3b568f70f2bDouglas Gregor } 1176a735b206fdb5c15767a45289e1ffb3b568f70f2bDouglas Gregor 117776d326448d7e4c10b2896edc2ee855d1e68d1b88John McCall if (Function->isOverloadedOperator() && !DC->isRecord() && 117876d326448d7e4c10b2896edc2ee855d1e68d1b88John McCall PrincipalDecl->isInIdentifierNamespace(Decl::IDNS_Ordinary)) 117976d326448d7e4c10b2896edc2ee855d1e68d1b88John McCall PrincipalDecl->setNonMemberOperator(); 118076d326448d7e4c10b2896edc2ee855d1e68d1b88John McCall 1181e53060fa78ad7e98352049f72787bdb7543e2a48Douglas Gregor return Function; 1182e53060fa78ad7e98352049f72787bdb7543e2a48Douglas Gregor} 11832dc0e64e57b2a1786fa53a7dbd1d5c8e255eadb0Douglas Gregor 1184d60e105e6d1624da647ef7dd35a9cf6fad1b763eDouglas GregorDecl * 1185d60e105e6d1624da647ef7dd35a9cf6fad1b763eDouglas GregorTemplateDeclInstantiator::VisitCXXMethodDecl(CXXMethodDecl *D, 1186d60e105e6d1624da647ef7dd35a9cf6fad1b763eDouglas Gregor TemplateParameterList *TemplateParams) { 11876b906869527be40b0d38d755e9ef51b331b88162Douglas Gregor FunctionTemplateDecl *FunctionTemplate = D->getDescribedFunctionTemplate(); 11886b906869527be40b0d38d755e9ef51b331b88162Douglas Gregor void *InsertPos = 0; 1189d60e105e6d1624da647ef7dd35a9cf6fad1b763eDouglas Gregor if (FunctionTemplate && !TemplateParams) { 11901eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // We are creating a function template specialization from a function 11911eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // template. Check whether there is already a function template 1192d60e105e6d1624da647ef7dd35a9cf6fad1b763eDouglas Gregor // specialization for this particular set of template arguments. 119324bae92f08ae098cc50a602d8cf1273b423e14daDouglas Gregor std::pair<const TemplateArgument *, unsigned> Innermost 119424bae92f08ae098cc50a602d8cf1273b423e14daDouglas Gregor = TemplateArgs.getInnermost(); 11951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11962c853e401ca406d417eb916e867226050e7be06bArgyrios Kyrtzidis FunctionDecl *SpecFunc 11972c853e401ca406d417eb916e867226050e7be06bArgyrios Kyrtzidis = FunctionTemplate->findSpecialization(Innermost.first, Innermost.second, 11982c853e401ca406d417eb916e867226050e7be06bArgyrios Kyrtzidis InsertPos); 11991eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 12006b906869527be40b0d38d755e9ef51b331b88162Douglas Gregor // If we already have a function template specialization, return it. 12012c853e401ca406d417eb916e867226050e7be06bArgyrios Kyrtzidis if (SpecFunc) 12022c853e401ca406d417eb916e867226050e7be06bArgyrios Kyrtzidis return SpecFunc; 12036b906869527be40b0d38d755e9ef51b331b88162Douglas Gregor } 12046b906869527be40b0d38d755e9ef51b331b88162Douglas Gregor 1205b0cb022daec8671406ab25f4b5d5a6d48d823bc4John McCall bool isFriend; 1206b0cb022daec8671406ab25f4b5d5a6d48d823bc4John McCall if (FunctionTemplate) 1207b0cb022daec8671406ab25f4b5d5a6d48d823bc4John McCall isFriend = (FunctionTemplate->getFriendObjectKind() != Decl::FOK_None); 1208b0cb022daec8671406ab25f4b5d5a6d48d823bc4John McCall else 1209b0cb022daec8671406ab25f4b5d5a6d48d823bc4John McCall isFriend = (D->getFriendObjectKind() != Decl::FOK_None); 1210b0cb022daec8671406ab25f4b5d5a6d48d823bc4John McCall 121179c2278a66d8fc0943774d1b7c71a32f7764e1e2Douglas Gregor bool MergeWithParentScope = (TemplateParams != 0) || 121279c2278a66d8fc0943774d1b7c71a32f7764e1e2Douglas Gregor !(isa<Decl>(Owner) && 121379c2278a66d8fc0943774d1b7c71a32f7764e1e2Douglas Gregor cast<Decl>(Owner)->isDefinedOutsideFunctionOrMethod()); 12142a7fb27913999d132cf9e10e03dc5271faa2e9d3John McCall LocalInstantiationScope Scope(SemaRef, MergeWithParentScope); 121548dd19b19ddb9e105f8cf0bf6f0732ca4e6a385bDouglas Gregor 12164eab39f0745fb1949dbb40c4145771b927888242John McCall // Instantiate enclosing template arguments for friends. 12174eab39f0745fb1949dbb40c4145771b927888242John McCall llvm::SmallVector<TemplateParameterList *, 4> TempParamLists; 12184eab39f0745fb1949dbb40c4145771b927888242John McCall unsigned NumTempParamLists = 0; 12194eab39f0745fb1949dbb40c4145771b927888242John McCall if (isFriend && (NumTempParamLists = D->getNumTemplateParameterLists())) { 12204eab39f0745fb1949dbb40c4145771b927888242John McCall TempParamLists.set_size(NumTempParamLists); 12214eab39f0745fb1949dbb40c4145771b927888242John McCall for (unsigned I = 0; I != NumTempParamLists; ++I) { 12224eab39f0745fb1949dbb40c4145771b927888242John McCall TemplateParameterList *TempParams = D->getTemplateParameterList(I); 12234eab39f0745fb1949dbb40c4145771b927888242John McCall TemplateParameterList *InstParams = SubstTemplateParams(TempParams); 12244eab39f0745fb1949dbb40c4145771b927888242John McCall if (!InstParams) 12254eab39f0745fb1949dbb40c4145771b927888242John McCall return NULL; 12264eab39f0745fb1949dbb40c4145771b927888242John McCall TempParamLists[I] = InstParams; 12274eab39f0745fb1949dbb40c4145771b927888242John McCall } 12284eab39f0745fb1949dbb40c4145771b927888242John McCall } 12294eab39f0745fb1949dbb40c4145771b927888242John McCall 12300ca20ac8cea99c43d89510f29cf3dc876f9c9111Douglas Gregor llvm::SmallVector<ParmVarDecl *, 4> Params; 123121ef0fa27b0783ec0bc6aa5b524feb2ec840f952John McCall TypeSourceInfo *TInfo = D->getTypeSourceInfo(); 123221ef0fa27b0783ec0bc6aa5b524feb2ec840f952John McCall TInfo = SubstFunctionType(D, Params); 123321ef0fa27b0783ec0bc6aa5b524feb2ec840f952John McCall if (!TInfo) 12342dc0e64e57b2a1786fa53a7dbd1d5c8e255eadb0Douglas Gregor return 0; 123521ef0fa27b0783ec0bc6aa5b524feb2ec840f952John McCall QualType T = TInfo->getType(); 12362dc0e64e57b2a1786fa53a7dbd1d5c8e255eadb0Douglas Gregor 1237723df245307a530da5433dfb43accf187dc3e243Abramo Bagnara // \brief If the type of this function, after ignoring parentheses, 1238723df245307a530da5433dfb43accf187dc3e243Abramo Bagnara // is not *directly* a function type, then we're instantiating a function 1239723df245307a530da5433dfb43accf187dc3e243Abramo Bagnara // that was declared via a typedef, e.g., 12405f970eee81372dfc6a1457c3d6d052af04e32a38Douglas Gregor // 12415f970eee81372dfc6a1457c3d6d052af04e32a38Douglas Gregor // typedef int functype(int, int); 12425f970eee81372dfc6a1457c3d6d052af04e32a38Douglas Gregor // functype func; 12435f970eee81372dfc6a1457c3d6d052af04e32a38Douglas Gregor // 12445f970eee81372dfc6a1457c3d6d052af04e32a38Douglas Gregor // In this case, we'll just go instantiate the ParmVarDecls that we 12455f970eee81372dfc6a1457c3d6d052af04e32a38Douglas Gregor // synthesized in the method declaration. 1246723df245307a530da5433dfb43accf187dc3e243Abramo Bagnara if (!isa<FunctionProtoType>(T.IgnoreParens())) { 12475f970eee81372dfc6a1457c3d6d052af04e32a38Douglas Gregor assert(!Params.size() && "Instantiating type could not yield parameters"); 124812c9c00024a01819e3a70ef6d951d32efaeb9312Douglas Gregor llvm::SmallVector<QualType, 4> ParamTypes; 124912c9c00024a01819e3a70ef6d951d32efaeb9312Douglas Gregor if (SemaRef.SubstParmTypes(D->getLocation(), D->param_begin(), 125012c9c00024a01819e3a70ef6d951d32efaeb9312Douglas Gregor D->getNumParams(), TemplateArgs, ParamTypes, 125112c9c00024a01819e3a70ef6d951d32efaeb9312Douglas Gregor &Params)) 125212c9c00024a01819e3a70ef6d951d32efaeb9312Douglas Gregor return 0; 12535f970eee81372dfc6a1457c3d6d052af04e32a38Douglas Gregor } 12545f970eee81372dfc6a1457c3d6d052af04e32a38Douglas Gregor 1255b0cb022daec8671406ab25f4b5d5a6d48d823bc4John McCall NestedNameSpecifier *Qualifier = D->getQualifier(); 1256b0cb022daec8671406ab25f4b5d5a6d48d823bc4John McCall if (Qualifier) { 1257b0cb022daec8671406ab25f4b5d5a6d48d823bc4John McCall Qualifier = SemaRef.SubstNestedNameSpecifier(Qualifier, 1258b0cb022daec8671406ab25f4b5d5a6d48d823bc4John McCall D->getQualifierRange(), 1259b0cb022daec8671406ab25f4b5d5a6d48d823bc4John McCall TemplateArgs); 1260b0cb022daec8671406ab25f4b5d5a6d48d823bc4John McCall if (!Qualifier) return 0; 1261b0cb022daec8671406ab25f4b5d5a6d48d823bc4John McCall } 1262b0cb022daec8671406ab25f4b5d5a6d48d823bc4John McCall 1263b0cb022daec8671406ab25f4b5d5a6d48d823bc4John McCall DeclContext *DC = Owner; 1264b0cb022daec8671406ab25f4b5d5a6d48d823bc4John McCall if (isFriend) { 1265b0cb022daec8671406ab25f4b5d5a6d48d823bc4John McCall if (Qualifier) { 1266b0cb022daec8671406ab25f4b5d5a6d48d823bc4John McCall CXXScopeSpec SS; 1267b0cb022daec8671406ab25f4b5d5a6d48d823bc4John McCall SS.setScopeRep(Qualifier); 1268b0cb022daec8671406ab25f4b5d5a6d48d823bc4John McCall SS.setRange(D->getQualifierRange()); 1269b0cb022daec8671406ab25f4b5d5a6d48d823bc4John McCall DC = SemaRef.computeDeclContext(SS); 1270c54d688c604d28dcb9ab8f92047837c10c8f9c61John McCall 1271c54d688c604d28dcb9ab8f92047837c10c8f9c61John McCall if (DC && SemaRef.RequireCompleteDeclContext(SS, DC)) 1272c54d688c604d28dcb9ab8f92047837c10c8f9c61John McCall return 0; 1273b0cb022daec8671406ab25f4b5d5a6d48d823bc4John McCall } else { 1274b0cb022daec8671406ab25f4b5d5a6d48d823bc4John McCall DC = SemaRef.FindInstantiatedContext(D->getLocation(), 1275b0cb022daec8671406ab25f4b5d5a6d48d823bc4John McCall D->getDeclContext(), 1276b0cb022daec8671406ab25f4b5d5a6d48d823bc4John McCall TemplateArgs); 1277b0cb022daec8671406ab25f4b5d5a6d48d823bc4John McCall } 1278b0cb022daec8671406ab25f4b5d5a6d48d823bc4John McCall if (!DC) return 0; 1279b0cb022daec8671406ab25f4b5d5a6d48d823bc4John McCall } 1280b0cb022daec8671406ab25f4b5d5a6d48d823bc4John McCall 12812dc0e64e57b2a1786fa53a7dbd1d5c8e255eadb0Douglas Gregor // Build the instantiated method declaration. 1282b0cb022daec8671406ab25f4b5d5a6d48d823bc4John McCall CXXRecordDecl *Record = cast<CXXRecordDecl>(DC); 1283dec06664a1c4d8984251083db2215875aea1c80dDouglas Gregor CXXMethodDecl *Method = 0; 12841eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 12852577743c5650c646fb705df01403707e94f2df04Abramo Bagnara DeclarationNameInfo NameInfo 12862577743c5650c646fb705df01403707e94f2df04Abramo Bagnara = SemaRef.SubstDeclarationNameInfo(D->getNameInfo(), TemplateArgs); 128717e32f30e2d1eaf6639d3d4e2196a8d7c709fbacDouglas Gregor if (CXXConstructorDecl *Constructor = dyn_cast<CXXConstructorDecl>(D)) { 12881eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Method = CXXConstructorDecl::Create(SemaRef.Context, Record, 12892577743c5650c646fb705df01403707e94f2df04Abramo Bagnara NameInfo, T, TInfo, 12901eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Constructor->isExplicit(), 129116573fa9705b546b7597c273b25b85d6321e2b33Douglas Gregor Constructor->isInlineSpecified(), 129216573fa9705b546b7597c273b25b85d6321e2b33Douglas Gregor false); 129317e32f30e2d1eaf6639d3d4e2196a8d7c709fbacDouglas Gregor } else if (CXXDestructorDecl *Destructor = dyn_cast<CXXDestructorDecl>(D)) { 129417e32f30e2d1eaf6639d3d4e2196a8d7c709fbacDouglas Gregor Method = CXXDestructorDecl::Create(SemaRef.Context, Record, 1295b41d899a6023385c00a61eb9dd3e44db9dc7994eCraig Silverstein NameInfo, T, TInfo, 12962577743c5650c646fb705df01403707e94f2df04Abramo Bagnara Destructor->isInlineSpecified(), 129716573fa9705b546b7597c273b25b85d6321e2b33Douglas Gregor false); 129865ec1fda479688d143fe2403242cd9c730c800a1Douglas Gregor } else if (CXXConversionDecl *Conversion = dyn_cast<CXXConversionDecl>(D)) { 129965ec1fda479688d143fe2403242cd9c730c800a1Douglas Gregor Method = CXXConversionDecl::Create(SemaRef.Context, Record, 13002577743c5650c646fb705df01403707e94f2df04Abramo Bagnara NameInfo, T, TInfo, 13010130f3cc4ccd5f46361c48d5fe94133d74619424Douglas Gregor Conversion->isInlineSpecified(), 130265ec1fda479688d143fe2403242cd9c730c800a1Douglas Gregor Conversion->isExplicit()); 1303dec06664a1c4d8984251083db2215875aea1c80dDouglas Gregor } else { 13042577743c5650c646fb705df01403707e94f2df04Abramo Bagnara Method = CXXMethodDecl::Create(SemaRef.Context, Record, 13052577743c5650c646fb705df01403707e94f2df04Abramo Bagnara NameInfo, T, TInfo, 130616573fa9705b546b7597c273b25b85d6321e2b33Douglas Gregor D->isStatic(), 130716573fa9705b546b7597c273b25b85d6321e2b33Douglas Gregor D->getStorageClassAsWritten(), 130816573fa9705b546b7597c273b25b85d6321e2b33Douglas Gregor D->isInlineSpecified()); 1309dec06664a1c4d8984251083db2215875aea1c80dDouglas Gregor } 13106b906869527be40b0d38d755e9ef51b331b88162Douglas Gregor 1311b0cb022daec8671406ab25f4b5d5a6d48d823bc4John McCall if (Qualifier) 1312b0cb022daec8671406ab25f4b5d5a6d48d823bc4John McCall Method->setQualifierInfo(Qualifier, D->getQualifierRange()); 1313b6217665c6a987f2d6c8665fd70365d7719ac4dfJohn McCall 1314d60e105e6d1624da647ef7dd35a9cf6fad1b763eDouglas Gregor if (TemplateParams) { 1315d60e105e6d1624da647ef7dd35a9cf6fad1b763eDouglas Gregor // Our resulting instantiation is actually a function template, since we 1316d60e105e6d1624da647ef7dd35a9cf6fad1b763eDouglas Gregor // are substituting only the outer template parameters. For example, given 13171eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // 1318d60e105e6d1624da647ef7dd35a9cf6fad1b763eDouglas Gregor // template<typename T> 1319d60e105e6d1624da647ef7dd35a9cf6fad1b763eDouglas Gregor // struct X { 1320d60e105e6d1624da647ef7dd35a9cf6fad1b763eDouglas Gregor // template<typename U> void f(T, U); 1321d60e105e6d1624da647ef7dd35a9cf6fad1b763eDouglas Gregor // }; 1322d60e105e6d1624da647ef7dd35a9cf6fad1b763eDouglas Gregor // 1323d60e105e6d1624da647ef7dd35a9cf6fad1b763eDouglas Gregor // X<int> x; 1324d60e105e6d1624da647ef7dd35a9cf6fad1b763eDouglas Gregor // 1325d60e105e6d1624da647ef7dd35a9cf6fad1b763eDouglas Gregor // We are instantiating the member template "f" within X<int>, which means 1326d60e105e6d1624da647ef7dd35a9cf6fad1b763eDouglas Gregor // substituting int for T, but leaving "f" as a member function template. 1327d60e105e6d1624da647ef7dd35a9cf6fad1b763eDouglas Gregor // Build the function template itself. 1328d60e105e6d1624da647ef7dd35a9cf6fad1b763eDouglas Gregor FunctionTemplate = FunctionTemplateDecl::Create(SemaRef.Context, Record, 1329d60e105e6d1624da647ef7dd35a9cf6fad1b763eDouglas Gregor Method->getLocation(), 13301eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Method->getDeclName(), 1331d60e105e6d1624da647ef7dd35a9cf6fad1b763eDouglas Gregor TemplateParams, Method); 1332b0cb022daec8671406ab25f4b5d5a6d48d823bc4John McCall if (isFriend) { 1333b0cb022daec8671406ab25f4b5d5a6d48d823bc4John McCall FunctionTemplate->setLexicalDeclContext(Owner); 1334b0cb022daec8671406ab25f4b5d5a6d48d823bc4John McCall FunctionTemplate->setObjectOfFriendDecl(true); 1335b0cb022daec8671406ab25f4b5d5a6d48d823bc4John McCall } else if (D->isOutOfLine()) 13361eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump FunctionTemplate->setLexicalDeclContext(D->getLexicalDeclContext()); 1337d60e105e6d1624da647ef7dd35a9cf6fad1b763eDouglas Gregor Method->setDescribedFunctionTemplate(FunctionTemplate); 133866724ea67d7d598b937d86fa66f03f09a1c758f3Douglas Gregor } else if (FunctionTemplate) { 133966724ea67d7d598b937d86fa66f03f09a1c758f3Douglas Gregor // Record this function template specialization. 134024bae92f08ae098cc50a602d8cf1273b423e14daDouglas Gregor std::pair<const TemplateArgument *, unsigned> Innermost 134124bae92f08ae098cc50a602d8cf1273b423e14daDouglas Gregor = TemplateArgs.getInnermost(); 1342838db383b69b9fb55f55c8e9546477df198a4faaDouglas Gregor Method->setFunctionTemplateSpecialization(FunctionTemplate, 1343910f8008fea79120489a53593fe971b0b8a4a740Douglas Gregor TemplateArgumentList::CreateCopy(SemaRef.Context, 1344910f8008fea79120489a53593fe971b0b8a4a740Douglas Gregor Innermost.first, 1345910f8008fea79120489a53593fe971b0b8a4a740Douglas Gregor Innermost.second), 134666724ea67d7d598b937d86fa66f03f09a1c758f3Douglas Gregor InsertPos); 1347b0cb022daec8671406ab25f4b5d5a6d48d823bc4John McCall } else if (!isFriend) { 134866724ea67d7d598b937d86fa66f03f09a1c758f3Douglas Gregor // Record that this is an instantiation of a member function. 13492db323294ac02296125e1e0beb4c3595992e75bbDouglas Gregor Method->setInstantiationOfMemberFunction(D, TSK_ImplicitInstantiation); 135066724ea67d7d598b937d86fa66f03f09a1c758f3Douglas Gregor } 135166724ea67d7d598b937d86fa66f03f09a1c758f3Douglas Gregor 13521eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // If we are instantiating a member function defined 13537caa6825f42a0f7e97d6fc06233133c42b218e46Douglas Gregor // out-of-line, the instantiation will have the same lexical 13547caa6825f42a0f7e97d6fc06233133c42b218e46Douglas Gregor // context (which will be a namespace scope) as the template. 1355b0cb022daec8671406ab25f4b5d5a6d48d823bc4John McCall if (isFriend) { 13564eab39f0745fb1949dbb40c4145771b927888242John McCall if (NumTempParamLists) 13574eab39f0745fb1949dbb40c4145771b927888242John McCall Method->setTemplateParameterListsInfo(SemaRef.Context, 13584eab39f0745fb1949dbb40c4145771b927888242John McCall NumTempParamLists, 13594eab39f0745fb1949dbb40c4145771b927888242John McCall TempParamLists.data()); 13604eab39f0745fb1949dbb40c4145771b927888242John McCall 1361b0cb022daec8671406ab25f4b5d5a6d48d823bc4John McCall Method->setLexicalDeclContext(Owner); 1362b0cb022daec8671406ab25f4b5d5a6d48d823bc4John McCall Method->setObjectOfFriendDecl(true); 1363b0cb022daec8671406ab25f4b5d5a6d48d823bc4John McCall } else if (D->isOutOfLine()) 13647caa6825f42a0f7e97d6fc06233133c42b218e46Douglas Gregor Method->setLexicalDeclContext(D->getLexicalDeclContext()); 13651eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 13665545e166a956a20d7a6b58408e251a1119025485Douglas Gregor // Attach the parameters 13675545e166a956a20d7a6b58408e251a1119025485Douglas Gregor for (unsigned P = 0; P < Params.size(); ++P) 13685545e166a956a20d7a6b58408e251a1119025485Douglas Gregor Params[P]->setOwningFunction(Method); 1369838db383b69b9fb55f55c8e9546477df198a4faaDouglas Gregor Method->setParams(Params.data(), Params.size()); 13705545e166a956a20d7a6b58408e251a1119025485Douglas Gregor 13715545e166a956a20d7a6b58408e251a1119025485Douglas Gregor if (InitMethodInstantiation(Method, D)) 13725545e166a956a20d7a6b58408e251a1119025485Douglas Gregor Method->setInvalidDecl(); 13732dc0e64e57b2a1786fa53a7dbd1d5c8e255eadb0Douglas Gregor 13742577743c5650c646fb705df01403707e94f2df04Abramo Bagnara LookupResult Previous(SemaRef, NameInfo, Sema::LookupOrdinaryName, 13752577743c5650c646fb705df01403707e94f2df04Abramo Bagnara Sema::ForRedeclaration); 13761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1377b0cb022daec8671406ab25f4b5d5a6d48d823bc4John McCall if (!FunctionTemplate || TemplateParams || isFriend) { 1378b0cb022daec8671406ab25f4b5d5a6d48d823bc4John McCall SemaRef.LookupQualifiedName(Previous, Record); 13791eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1380dec06664a1c4d8984251083db2215875aea1c80dDouglas Gregor // In C++, the previous declaration we find might be a tag type 1381dec06664a1c4d8984251083db2215875aea1c80dDouglas Gregor // (class or enum). In this case, the new declaration will hide the 1382dec06664a1c4d8984251083db2215875aea1c80dDouglas Gregor // tag type. Note that this does does not apply if we're declaring a 1383dec06664a1c4d8984251083db2215875aea1c80dDouglas Gregor // typedef (C++ [dcl.typedef]p4). 13846826314938f8510cd1a6b03b5d032592456ae27bJohn McCall if (Previous.isSingleTagDecl()) 13856826314938f8510cd1a6b03b5d032592456ae27bJohn McCall Previous.clear(); 1386dec06664a1c4d8984251083db2215875aea1c80dDouglas Gregor } 13872dc0e64e57b2a1786fa53a7dbd1d5c8e255eadb0Douglas Gregor 138865ec1fda479688d143fe2403242cd9c730c800a1Douglas Gregor bool Redeclaration = false; 1389c80e8115278ba1537c8b517a083ecbd0a018b579Peter Collingbourne SemaRef.CheckFunctionDeclaration(0, Method, Previous, false, Redeclaration); 139065ec1fda479688d143fe2403242cd9c730c800a1Douglas Gregor 13914ba3136b3eb9740a07bd61d0ab23ce9a8d894deeDouglas Gregor if (D->isPure()) 13924ba3136b3eb9740a07bd61d0ab23ce9a8d894deeDouglas Gregor SemaRef.CheckPureMethod(Method, SourceRange()); 13934ba3136b3eb9740a07bd61d0ab23ce9a8d894deeDouglas Gregor 139446460a68f6508775e98c19b4bb8454bb471aac24John McCall Method->setAccess(D->getAccess()); 139546460a68f6508775e98c19b4bb8454bb471aac24John McCall 13969eefa229dfb71400a6bbee326420a7f0e2e91f1fAnders Carlsson SemaRef.CheckOverrideControl(Method); 13979eefa229dfb71400a6bbee326420a7f0e2e91f1fAnders Carlsson 1398b0cb022daec8671406ab25f4b5d5a6d48d823bc4John McCall if (FunctionTemplate) { 1399b0cb022daec8671406ab25f4b5d5a6d48d823bc4John McCall // If there's a function template, let our caller handle it. 1400b0cb022daec8671406ab25f4b5d5a6d48d823bc4John McCall } else if (Method->isInvalidDecl() && !Previous.empty()) { 1401b0cb022daec8671406ab25f4b5d5a6d48d823bc4John McCall // Don't hide a (potentially) valid declaration with an invalid one. 1402b0cb022daec8671406ab25f4b5d5a6d48d823bc4John McCall } else { 1403b0cb022daec8671406ab25f4b5d5a6d48d823bc4John McCall NamedDecl *DeclToAdd = (TemplateParams 1404b0cb022daec8671406ab25f4b5d5a6d48d823bc4John McCall ? cast<NamedDecl>(FunctionTemplate) 1405b0cb022daec8671406ab25f4b5d5a6d48d823bc4John McCall : Method); 1406b0cb022daec8671406ab25f4b5d5a6d48d823bc4John McCall if (isFriend) 1407b0cb022daec8671406ab25f4b5d5a6d48d823bc4John McCall Record->makeDeclVisibleInContext(DeclToAdd); 1408b0cb022daec8671406ab25f4b5d5a6d48d823bc4John McCall else 1409b0cb022daec8671406ab25f4b5d5a6d48d823bc4John McCall Owner->addDecl(DeclToAdd); 1410b0cb022daec8671406ab25f4b5d5a6d48d823bc4John McCall } 1411bbc6454bb98d6a6ecbaafa715222c5db834307f2Argyrios Kyrtzidis 14122dc0e64e57b2a1786fa53a7dbd1d5c8e255eadb0Douglas Gregor return Method; 14132dc0e64e57b2a1786fa53a7dbd1d5c8e255eadb0Douglas Gregor} 14142dc0e64e57b2a1786fa53a7dbd1d5c8e255eadb0Douglas Gregor 1415615c5d4674355ba830b9978f462ca7a8c5d15f85Douglas GregorDecl *TemplateDeclInstantiator::VisitCXXConstructorDecl(CXXConstructorDecl *D) { 1416dec06664a1c4d8984251083db2215875aea1c80dDouglas Gregor return VisitCXXMethodDecl(D); 1417615c5d4674355ba830b9978f462ca7a8c5d15f85Douglas Gregor} 1418615c5d4674355ba830b9978f462ca7a8c5d15f85Douglas Gregor 141903b2b07aaef3a585aec13048a33356c7f635de72Douglas GregorDecl *TemplateDeclInstantiator::VisitCXXDestructorDecl(CXXDestructorDecl *D) { 142017e32f30e2d1eaf6639d3d4e2196a8d7c709fbacDouglas Gregor return VisitCXXMethodDecl(D); 142103b2b07aaef3a585aec13048a33356c7f635de72Douglas Gregor} 142203b2b07aaef3a585aec13048a33356c7f635de72Douglas Gregor 1423bb969ed4193e2eadabfaa0dfd0b94312b6146349Douglas GregorDecl *TemplateDeclInstantiator::VisitCXXConversionDecl(CXXConversionDecl *D) { 142465ec1fda479688d143fe2403242cd9c730c800a1Douglas Gregor return VisitCXXMethodDecl(D); 1425bb969ed4193e2eadabfaa0dfd0b94312b6146349Douglas Gregor} 1426bb969ed4193e2eadabfaa0dfd0b94312b6146349Douglas Gregor 14276477b69cc93e0a0ff15036d60d604f3544da0f29Douglas GregorParmVarDecl *TemplateDeclInstantiator::VisitParmVarDecl(ParmVarDecl *D) { 14286a24bfda084f06a0b252b7befe8cbb17fce7f94eDouglas Gregor return SemaRef.SubstParmVarDecl(D, TemplateArgs, llvm::Optional<unsigned>()); 14292dc0e64e57b2a1786fa53a7dbd1d5c8e255eadb0Douglas Gregor} 14302dc0e64e57b2a1786fa53a7dbd1d5c8e255eadb0Douglas Gregor 1431e29ba20148e9b7835ad463b39cd4ee9223eafbbfJohn McCallDecl *TemplateDeclInstantiator::VisitTemplateTypeParmDecl( 1432e29ba20148e9b7835ad463b39cd4ee9223eafbbfJohn McCall TemplateTypeParmDecl *D) { 1433e29ba20148e9b7835ad463b39cd4ee9223eafbbfJohn McCall // TODO: don't always clone when decls are refcounted. 1434efed5c832de630715dd42211dd3b2aab5dd97a1bDouglas Gregor const Type* T = D->getTypeForDecl(); 1435efed5c832de630715dd42211dd3b2aab5dd97a1bDouglas Gregor assert(T->isTemplateTypeParmType()); 1436efed5c832de630715dd42211dd3b2aab5dd97a1bDouglas Gregor const TemplateTypeParmType *TTPT = T->getAs<TemplateTypeParmType>(); 14371eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1438e29ba20148e9b7835ad463b39cd4ee9223eafbbfJohn McCall TemplateTypeParmDecl *Inst = 1439e29ba20148e9b7835ad463b39cd4ee9223eafbbfJohn McCall TemplateTypeParmDecl::Create(SemaRef.Context, Owner, D->getLocation(), 144071b87e4fa6bfb47107b099135864f9024004a4c9Douglas Gregor TTPT->getDepth() - TemplateArgs.getNumLevels(), 144161139c561f1a2c872209e32ff9143487cebf4324Nick Lewycky TTPT->getIndex(), D->getIdentifier(), 1442e29ba20148e9b7835ad463b39cd4ee9223eafbbfJohn McCall D->wasDeclaredWithTypename(), 1443e29ba20148e9b7835ad463b39cd4ee9223eafbbfJohn McCall D->isParameterPack()); 1444e29ba20148e9b7835ad463b39cd4ee9223eafbbfJohn McCall 14450f8716b7bb25d61a82f699b3975167451f7b5a68Douglas Gregor if (D->hasDefaultArgument()) 14460f8716b7bb25d61a82f699b3975167451f7b5a68Douglas Gregor Inst->setDefaultArgument(D->getDefaultArgumentInfo(), false); 1447e29ba20148e9b7835ad463b39cd4ee9223eafbbfJohn McCall 1448550d9b28fd586db541eb6dd36f3c10d114e483d8Douglas Gregor // Introduce this template parameter's instantiation into the instantiation 1449550d9b28fd586db541eb6dd36f3c10d114e483d8Douglas Gregor // scope. 1450550d9b28fd586db541eb6dd36f3c10d114e483d8Douglas Gregor SemaRef.CurrentInstantiationScope->InstantiatedLocal(D, Inst); 1451550d9b28fd586db541eb6dd36f3c10d114e483d8Douglas Gregor 1452e29ba20148e9b7835ad463b39cd4ee9223eafbbfJohn McCall return Inst; 1453e29ba20148e9b7835ad463b39cd4ee9223eafbbfJohn McCall} 1454e29ba20148e9b7835ad463b39cd4ee9223eafbbfJohn McCall 145533642df30088f2ddb0b22c609523ab8df9dff595Douglas GregorDecl *TemplateDeclInstantiator::VisitNonTypeTemplateParmDecl( 145633642df30088f2ddb0b22c609523ab8df9dff595Douglas Gregor NonTypeTemplateParmDecl *D) { 145733642df30088f2ddb0b22c609523ab8df9dff595Douglas Gregor // Substitute into the type of the non-type template parameter. 14586952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor TypeLoc TL = D->getTypeSourceInfo()->getTypeLoc(); 14596952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor llvm::SmallVector<TypeSourceInfo *, 4> ExpandedParameterPackTypesAsWritten; 14606952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor llvm::SmallVector<QualType, 4> ExpandedParameterPackTypes; 14616952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor bool IsExpandedParameterPack = false; 14626952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor TypeSourceInfo *DI; 146333642df30088f2ddb0b22c609523ab8df9dff595Douglas Gregor QualType T; 146433642df30088f2ddb0b22c609523ab8df9dff595Douglas Gregor bool Invalid = false; 14656952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor 14666952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor if (D->isExpandedParameterPack()) { 14676952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor // The non-type template parameter pack is an already-expanded pack 14686952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor // expansion of types. Substitute into each of the expanded types. 14696952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor ExpandedParameterPackTypes.reserve(D->getNumExpansionTypes()); 14706952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor ExpandedParameterPackTypesAsWritten.reserve(D->getNumExpansionTypes()); 14716952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor for (unsigned I = 0, N = D->getNumExpansionTypes(); I != N; ++I) { 14726952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor TypeSourceInfo *NewDI =SemaRef.SubstType(D->getExpansionTypeSourceInfo(I), 14736952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor TemplateArgs, 14746952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor D->getLocation(), 14756952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor D->getDeclName()); 14766952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor if (!NewDI) 14776952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor return 0; 14786952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor 14796952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor ExpandedParameterPackTypesAsWritten.push_back(NewDI); 14806952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor QualType NewT =SemaRef.CheckNonTypeTemplateParameterType(NewDI->getType(), 14816952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor D->getLocation()); 14826952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor if (NewT.isNull()) 14836952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor return 0; 14846952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor ExpandedParameterPackTypes.push_back(NewT); 14856952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor } 14866952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor 14876952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor IsExpandedParameterPack = true; 14886952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor DI = D->getTypeSourceInfo(); 14896952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor T = DI->getType(); 14906952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor } else if (isa<PackExpansionTypeLoc>(TL)) { 14916952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor // The non-type template parameter pack's type is a pack expansion of types. 14926952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor // Determine whether we need to expand this parameter pack into separate 14936952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor // types. 14946952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor PackExpansionTypeLoc Expansion = cast<PackExpansionTypeLoc>(TL); 14956952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor TypeLoc Pattern = Expansion.getPatternLoc(); 14966952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor llvm::SmallVector<UnexpandedParameterPack, 2> Unexpanded; 14976952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor SemaRef.collectUnexpandedParameterPacks(Pattern, Unexpanded); 14986952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor 14996952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor // Determine whether the set of unexpanded parameter packs can and should 15006952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor // be expanded. 15016952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor bool Expand = true; 15026952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor bool RetainExpansion = false; 15036952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor llvm::Optional<unsigned> OrigNumExpansions 15046952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor = Expansion.getTypePtr()->getNumExpansions(); 15056952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor llvm::Optional<unsigned> NumExpansions = OrigNumExpansions; 15066952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor if (SemaRef.CheckParameterPacksForExpansion(Expansion.getEllipsisLoc(), 15076952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor Pattern.getSourceRange(), 15086952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor Unexpanded.data(), 15096952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor Unexpanded.size(), 15106952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor TemplateArgs, 15116952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor Expand, RetainExpansion, 15126952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor NumExpansions)) 15136952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor return 0; 15146952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor 15156952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor if (Expand) { 15166952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor for (unsigned I = 0; I != *NumExpansions; ++I) { 15176952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor Sema::ArgumentPackSubstitutionIndexRAII SubstIndex(SemaRef, I); 15186952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor TypeSourceInfo *NewDI = SemaRef.SubstType(Pattern, TemplateArgs, 15196952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor D->getLocation(), 15206952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor D->getDeclName()); 15216952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor if (!NewDI) 15226952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor return 0; 15236952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor 15246952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor ExpandedParameterPackTypesAsWritten.push_back(NewDI); 15256952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor QualType NewT = SemaRef.CheckNonTypeTemplateParameterType( 15266952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor NewDI->getType(), 15276952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor D->getLocation()); 15286952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor if (NewT.isNull()) 15296952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor return 0; 15306952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor ExpandedParameterPackTypes.push_back(NewT); 15316952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor } 15326952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor 15336952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor // Note that we have an expanded parameter pack. The "type" of this 15346952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor // expanded parameter pack is the original expansion type, but callers 15356952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor // will end up using the expanded parameter pack types for type-checking. 15366952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor IsExpandedParameterPack = true; 15376952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor DI = D->getTypeSourceInfo(); 15386952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor T = DI->getType(); 15396952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor } else { 15406952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor // We cannot fully expand the pack expansion now, so substitute into the 15416952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor // pattern and create a new pack expansion type. 15426952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor Sema::ArgumentPackSubstitutionIndexRAII SubstIndex(SemaRef, -1); 15436952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor TypeSourceInfo *NewPattern = SemaRef.SubstType(Pattern, TemplateArgs, 15446952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor D->getLocation(), 15456952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor D->getDeclName()); 15466952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor if (!NewPattern) 15476952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor return 0; 15486952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor 15496952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor DI = SemaRef.CheckPackExpansion(NewPattern, Expansion.getEllipsisLoc(), 15506952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor NumExpansions); 15516952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor if (!DI) 15526952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor return 0; 15536952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor 15546952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor T = DI->getType(); 15556952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor } 15566952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor } else { 15576952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor // Simple case: substitution into a parameter that is not a parameter pack. 15586952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor DI = SemaRef.SubstType(D->getTypeSourceInfo(), TemplateArgs, 15596952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor D->getLocation(), D->getDeclName()); 15606952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor if (!DI) 15616952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor return 0; 15626952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor 15636952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor // Check that this type is acceptable for a non-type template parameter. 15646952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor bool Invalid = false; 15656952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor T = SemaRef.CheckNonTypeTemplateParameterType(DI->getType(), 15666952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor D->getLocation()); 15676952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor if (T.isNull()) { 15686952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor T = SemaRef.Context.IntTy; 15696952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor Invalid = true; 15706952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor } 157133642df30088f2ddb0b22c609523ab8df9dff595Douglas Gregor } 157233642df30088f2ddb0b22c609523ab8df9dff595Douglas Gregor 15736952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor NonTypeTemplateParmDecl *Param; 15746952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor if (IsExpandedParameterPack) 15756952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor Param = NonTypeTemplateParmDecl::Create(SemaRef.Context, Owner, 15766952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor D->getLocation(), 157771b87e4fa6bfb47107b099135864f9024004a4c9Douglas Gregor D->getDepth() - TemplateArgs.getNumLevels(), 15786952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor D->getPosition(), 15796952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor D->getIdentifier(), T, 15806952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor DI, 15816952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor ExpandedParameterPackTypes.data(), 15826952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor ExpandedParameterPackTypes.size(), 15836952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor ExpandedParameterPackTypesAsWritten.data()); 15846952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor else 15856952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor Param = NonTypeTemplateParmDecl::Create(SemaRef.Context, Owner, 15866952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor D->getLocation(), 15876952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor D->getDepth() - TemplateArgs.getNumLevels(), 15886952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor D->getPosition(), 15896952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor D->getIdentifier(), T, 15906952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor D->isParameterPack(), DI); 15916952f1e4256c5b43aee5e98cea4e9b663bd1d413Douglas Gregor 159233642df30088f2ddb0b22c609523ab8df9dff595Douglas Gregor if (Invalid) 159333642df30088f2ddb0b22c609523ab8df9dff595Douglas Gregor Param->setInvalidDecl(); 159433642df30088f2ddb0b22c609523ab8df9dff595Douglas Gregor 1595d92f7a297c0ed3f7d0ebcbb557e1d4c1925b8c72Abramo Bagnara Param->setDefaultArgument(D->getDefaultArgument(), false); 1596550d9b28fd586db541eb6dd36f3c10d114e483d8Douglas Gregor 1597550d9b28fd586db541eb6dd36f3c10d114e483d8Douglas Gregor // Introduce this template parameter's instantiation into the instantiation 1598550d9b28fd586db541eb6dd36f3c10d114e483d8Douglas Gregor // scope. 1599550d9b28fd586db541eb6dd36f3c10d114e483d8Douglas Gregor SemaRef.CurrentInstantiationScope->InstantiatedLocal(D, Param); 160033642df30088f2ddb0b22c609523ab8df9dff595Douglas Gregor return Param; 160133642df30088f2ddb0b22c609523ab8df9dff595Douglas Gregor} 160233642df30088f2ddb0b22c609523ab8df9dff595Douglas Gregor 16030dde18e5a713bc186062ca1ebc9967500b07faeeAnders CarlssonDecl * 16049106ef78f8fcc9df1a60c7a5b64c7d967194207eDouglas GregorTemplateDeclInstantiator::VisitTemplateTemplateParmDecl( 16059106ef78f8fcc9df1a60c7a5b64c7d967194207eDouglas Gregor TemplateTemplateParmDecl *D) { 16069106ef78f8fcc9df1a60c7a5b64c7d967194207eDouglas Gregor // Instantiate the template parameter list of the template template parameter. 16079106ef78f8fcc9df1a60c7a5b64c7d967194207eDouglas Gregor TemplateParameterList *TempParams = D->getTemplateParameters(); 16089106ef78f8fcc9df1a60c7a5b64c7d967194207eDouglas Gregor TemplateParameterList *InstParams; 16099106ef78f8fcc9df1a60c7a5b64c7d967194207eDouglas Gregor { 16109106ef78f8fcc9df1a60c7a5b64c7d967194207eDouglas Gregor // Perform the actual substitution of template parameters within a new, 16119106ef78f8fcc9df1a60c7a5b64c7d967194207eDouglas Gregor // local instantiation scope. 16122a7fb27913999d132cf9e10e03dc5271faa2e9d3John McCall LocalInstantiationScope Scope(SemaRef); 16139106ef78f8fcc9df1a60c7a5b64c7d967194207eDouglas Gregor InstParams = SubstTemplateParams(TempParams); 16149106ef78f8fcc9df1a60c7a5b64c7d967194207eDouglas Gregor if (!InstParams) 16159106ef78f8fcc9df1a60c7a5b64c7d967194207eDouglas Gregor return NULL; 16169106ef78f8fcc9df1a60c7a5b64c7d967194207eDouglas Gregor } 16179106ef78f8fcc9df1a60c7a5b64c7d967194207eDouglas Gregor 16189106ef78f8fcc9df1a60c7a5b64c7d967194207eDouglas Gregor // Build the template template parameter. 16199106ef78f8fcc9df1a60c7a5b64c7d967194207eDouglas Gregor TemplateTemplateParmDecl *Param 16209106ef78f8fcc9df1a60c7a5b64c7d967194207eDouglas Gregor = TemplateTemplateParmDecl::Create(SemaRef.Context, Owner, D->getLocation(), 162171b87e4fa6bfb47107b099135864f9024004a4c9Douglas Gregor D->getDepth() - TemplateArgs.getNumLevels(), 162261c4d28e36cd3f1be392cb77f07436d1fa6b0f9fDouglas Gregor D->getPosition(), D->isParameterPack(), 162361c4d28e36cd3f1be392cb77f07436d1fa6b0f9fDouglas Gregor D->getIdentifier(), InstParams); 1624d92f7a297c0ed3f7d0ebcbb557e1d4c1925b8c72Abramo Bagnara Param->setDefaultArgument(D->getDefaultArgument(), false); 16254469e8a97cdca3725b4f8f366916143113c029acDouglas Gregor 16269106ef78f8fcc9df1a60c7a5b64c7d967194207eDouglas Gregor // Introduce this template parameter's instantiation into the instantiation 16279106ef78f8fcc9df1a60c7a5b64c7d967194207eDouglas Gregor // scope. 16289106ef78f8fcc9df1a60c7a5b64c7d967194207eDouglas Gregor SemaRef.CurrentInstantiationScope->InstantiatedLocal(D, Param); 16299106ef78f8fcc9df1a60c7a5b64c7d967194207eDouglas Gregor 16309106ef78f8fcc9df1a60c7a5b64c7d967194207eDouglas Gregor return Param; 16319106ef78f8fcc9df1a60c7a5b64c7d967194207eDouglas Gregor} 16329106ef78f8fcc9df1a60c7a5b64c7d967194207eDouglas Gregor 163348c32a7e7c977f317dc1dc19524c2f54d29c7270Douglas GregorDecl *TemplateDeclInstantiator::VisitUsingDirectiveDecl(UsingDirectiveDecl *D) { 163448c32a7e7c977f317dc1dc19524c2f54d29c7270Douglas Gregor // Using directives are never dependent, so they require no explicit 163548c32a7e7c977f317dc1dc19524c2f54d29c7270Douglas Gregor 163648c32a7e7c977f317dc1dc19524c2f54d29c7270Douglas Gregor UsingDirectiveDecl *Inst 163748c32a7e7c977f317dc1dc19524c2f54d29c7270Douglas Gregor = UsingDirectiveDecl::Create(SemaRef.Context, Owner, D->getLocation(), 163848c32a7e7c977f317dc1dc19524c2f54d29c7270Douglas Gregor D->getNamespaceKeyLocation(), 163948c32a7e7c977f317dc1dc19524c2f54d29c7270Douglas Gregor D->getQualifierRange(), D->getQualifier(), 164048c32a7e7c977f317dc1dc19524c2f54d29c7270Douglas Gregor D->getIdentLocation(), 164148c32a7e7c977f317dc1dc19524c2f54d29c7270Douglas Gregor D->getNominatedNamespace(), 164248c32a7e7c977f317dc1dc19524c2f54d29c7270Douglas Gregor D->getCommonAncestor()); 164348c32a7e7c977f317dc1dc19524c2f54d29c7270Douglas Gregor Owner->addDecl(Inst); 164448c32a7e7c977f317dc1dc19524c2f54d29c7270Douglas Gregor return Inst; 164548c32a7e7c977f317dc1dc19524c2f54d29c7270Douglas Gregor} 164648c32a7e7c977f317dc1dc19524c2f54d29c7270Douglas Gregor 1647ed97649e9574b9d854fa4d6109c9333ae0993554John McCallDecl *TemplateDeclInstantiator::VisitUsingDecl(UsingDecl *D) { 16481b398205267ea69f35230eea50e0225db22ebb7eDouglas Gregor 16491b398205267ea69f35230eea50e0225db22ebb7eDouglas Gregor // The nested name specifier may be dependent, for example 16501b398205267ea69f35230eea50e0225db22ebb7eDouglas Gregor // template <typename T> struct t { 16511b398205267ea69f35230eea50e0225db22ebb7eDouglas Gregor // struct s1 { T f1(); }; 16521b398205267ea69f35230eea50e0225db22ebb7eDouglas Gregor // struct s2 : s1 { using s1::f1; }; 16531b398205267ea69f35230eea50e0225db22ebb7eDouglas Gregor // }; 16541b398205267ea69f35230eea50e0225db22ebb7eDouglas Gregor // template struct t<int>; 16551b398205267ea69f35230eea50e0225db22ebb7eDouglas Gregor // Here, in using s1::f1, s1 refers to t<T>::s1; 16561b398205267ea69f35230eea50e0225db22ebb7eDouglas Gregor // we need to substitute for t<int>::s1. 16571b398205267ea69f35230eea50e0225db22ebb7eDouglas Gregor NestedNameSpecifier *NNS = 16581b398205267ea69f35230eea50e0225db22ebb7eDouglas Gregor SemaRef.SubstNestedNameSpecifier(D->getTargetNestedNameDecl(), 16591b398205267ea69f35230eea50e0225db22ebb7eDouglas Gregor D->getNestedNameRange(), 16601b398205267ea69f35230eea50e0225db22ebb7eDouglas Gregor TemplateArgs); 16611b398205267ea69f35230eea50e0225db22ebb7eDouglas Gregor if (!NNS) 16621b398205267ea69f35230eea50e0225db22ebb7eDouglas Gregor return 0; 16631b398205267ea69f35230eea50e0225db22ebb7eDouglas Gregor 16641b398205267ea69f35230eea50e0225db22ebb7eDouglas Gregor // The name info is non-dependent, so no transformation 16651b398205267ea69f35230eea50e0225db22ebb7eDouglas Gregor // is required. 1666ef3dce817d43faadbf21ce9102d33a9d84b02e09Abramo Bagnara DeclarationNameInfo NameInfo = D->getNameInfo(); 1667ed97649e9574b9d854fa4d6109c9333ae0993554John McCall 16689f54ad4381370c6b771424b53d219e661d6d6706John McCall // We only need to do redeclaration lookups if we're in a class 16699f54ad4381370c6b771424b53d219e661d6d6706John McCall // scope (in fact, it's not really even possible in non-class 16709f54ad4381370c6b771424b53d219e661d6d6706John McCall // scopes). 16719f54ad4381370c6b771424b53d219e661d6d6706John McCall bool CheckRedeclaration = Owner->isRecord(); 16729f54ad4381370c6b771424b53d219e661d6d6706John McCall 1673ef3dce817d43faadbf21ce9102d33a9d84b02e09Abramo Bagnara LookupResult Prev(SemaRef, NameInfo, Sema::LookupUsingDeclName, 1674ef3dce817d43faadbf21ce9102d33a9d84b02e09Abramo Bagnara Sema::ForRedeclaration); 16759f54ad4381370c6b771424b53d219e661d6d6706John McCall 1676ed97649e9574b9d854fa4d6109c9333ae0993554John McCall UsingDecl *NewUD = UsingDecl::Create(SemaRef.Context, Owner, 1677ed97649e9574b9d854fa4d6109c9333ae0993554John McCall D->getNestedNameRange(), 1678ed97649e9574b9d854fa4d6109c9333ae0993554John McCall D->getUsingLocation(), 16791b398205267ea69f35230eea50e0225db22ebb7eDouglas Gregor NNS, 1680ef3dce817d43faadbf21ce9102d33a9d84b02e09Abramo Bagnara NameInfo, 1681ed97649e9574b9d854fa4d6109c9333ae0993554John McCall D->isTypeName()); 1682ed97649e9574b9d854fa4d6109c9333ae0993554John McCall 1683ed97649e9574b9d854fa4d6109c9333ae0993554John McCall CXXScopeSpec SS; 16841b398205267ea69f35230eea50e0225db22ebb7eDouglas Gregor SS.setScopeRep(NNS); 1685ed97649e9574b9d854fa4d6109c9333ae0993554John McCall SS.setRange(D->getNestedNameRange()); 16869f54ad4381370c6b771424b53d219e661d6d6706John McCall 16879f54ad4381370c6b771424b53d219e661d6d6706John McCall if (CheckRedeclaration) { 16889f54ad4381370c6b771424b53d219e661d6d6706John McCall Prev.setHideTags(false); 16899f54ad4381370c6b771424b53d219e661d6d6706John McCall SemaRef.LookupQualifiedName(Prev, Owner); 16909f54ad4381370c6b771424b53d219e661d6d6706John McCall 16919f54ad4381370c6b771424b53d219e661d6d6706John McCall // Check for invalid redeclarations. 16929f54ad4381370c6b771424b53d219e661d6d6706John McCall if (SemaRef.CheckUsingDeclRedeclaration(D->getUsingLocation(), 16939f54ad4381370c6b771424b53d219e661d6d6706John McCall D->isTypeName(), SS, 16949f54ad4381370c6b771424b53d219e661d6d6706John McCall D->getLocation(), Prev)) 16959f54ad4381370c6b771424b53d219e661d6d6706John McCall NewUD->setInvalidDecl(); 16969f54ad4381370c6b771424b53d219e661d6d6706John McCall 16979f54ad4381370c6b771424b53d219e661d6d6706John McCall } 16989f54ad4381370c6b771424b53d219e661d6d6706John McCall 16999f54ad4381370c6b771424b53d219e661d6d6706John McCall if (!NewUD->isInvalidDecl() && 17009f54ad4381370c6b771424b53d219e661d6d6706John McCall SemaRef.CheckUsingDeclQualifier(D->getUsingLocation(), SS, 1701ed97649e9574b9d854fa4d6109c9333ae0993554John McCall D->getLocation())) 1702ed97649e9574b9d854fa4d6109c9333ae0993554John McCall NewUD->setInvalidDecl(); 17039f54ad4381370c6b771424b53d219e661d6d6706John McCall 1704ed97649e9574b9d854fa4d6109c9333ae0993554John McCall SemaRef.Context.setInstantiatedFromUsingDecl(NewUD, D); 1705ed97649e9574b9d854fa4d6109c9333ae0993554John McCall NewUD->setAccess(D->getAccess()); 1706ed97649e9574b9d854fa4d6109c9333ae0993554John McCall Owner->addDecl(NewUD); 1707ed97649e9574b9d854fa4d6109c9333ae0993554John McCall 17089f54ad4381370c6b771424b53d219e661d6d6706John McCall // Don't process the shadow decls for an invalid decl. 17099f54ad4381370c6b771424b53d219e661d6d6706John McCall if (NewUD->isInvalidDecl()) 17109f54ad4381370c6b771424b53d219e661d6d6706John McCall return NewUD; 17119f54ad4381370c6b771424b53d219e661d6d6706John McCall 1712323c310efa0abd7a786b0303501186b5f33eb8d7John McCall bool isFunctionScope = Owner->isFunctionOrMethod(); 1713323c310efa0abd7a786b0303501186b5f33eb8d7John McCall 17149f54ad4381370c6b771424b53d219e661d6d6706John McCall // Process the shadow decls. 17159f54ad4381370c6b771424b53d219e661d6d6706John McCall for (UsingDecl::shadow_iterator I = D->shadow_begin(), E = D->shadow_end(); 17169f54ad4381370c6b771424b53d219e661d6d6706John McCall I != E; ++I) { 17179f54ad4381370c6b771424b53d219e661d6d6706John McCall UsingShadowDecl *Shadow = *I; 17189f54ad4381370c6b771424b53d219e661d6d6706John McCall NamedDecl *InstTarget = 17197c1e98f1cb37b40e619a0c8aee8b337f037b432bDouglas Gregor cast<NamedDecl>(SemaRef.FindInstantiatedDecl(Shadow->getLocation(), 17207c1e98f1cb37b40e619a0c8aee8b337f037b432bDouglas Gregor Shadow->getTargetDecl(), 17219f54ad4381370c6b771424b53d219e661d6d6706John McCall TemplateArgs)); 17229f54ad4381370c6b771424b53d219e661d6d6706John McCall 17239f54ad4381370c6b771424b53d219e661d6d6706John McCall if (CheckRedeclaration && 17249f54ad4381370c6b771424b53d219e661d6d6706John McCall SemaRef.CheckUsingShadowDecl(NewUD, InstTarget, Prev)) 17259f54ad4381370c6b771424b53d219e661d6d6706John McCall continue; 17269f54ad4381370c6b771424b53d219e661d6d6706John McCall 17279f54ad4381370c6b771424b53d219e661d6d6706John McCall UsingShadowDecl *InstShadow 17289f54ad4381370c6b771424b53d219e661d6d6706John McCall = SemaRef.BuildUsingShadowDecl(/*Scope*/ 0, NewUD, InstTarget); 17299f54ad4381370c6b771424b53d219e661d6d6706John McCall SemaRef.Context.setInstantiatedFromUsingShadowDecl(InstShadow, Shadow); 1730323c310efa0abd7a786b0303501186b5f33eb8d7John McCall 1731323c310efa0abd7a786b0303501186b5f33eb8d7John McCall if (isFunctionScope) 1732323c310efa0abd7a786b0303501186b5f33eb8d7John McCall SemaRef.CurrentInstantiationScope->InstantiatedLocal(Shadow, InstShadow); 17339f54ad4381370c6b771424b53d219e661d6d6706John McCall } 1734ed97649e9574b9d854fa4d6109c9333ae0993554John McCall 1735ed97649e9574b9d854fa4d6109c9333ae0993554John McCall return NewUD; 1736ed97649e9574b9d854fa4d6109c9333ae0993554John McCall} 1737ed97649e9574b9d854fa4d6109c9333ae0993554John McCall 1738ed97649e9574b9d854fa4d6109c9333ae0993554John McCallDecl *TemplateDeclInstantiator::VisitUsingShadowDecl(UsingShadowDecl *D) { 17399f54ad4381370c6b771424b53d219e661d6d6706John McCall // Ignore these; we handle them in bulk when processing the UsingDecl. 17409f54ad4381370c6b771424b53d219e661d6d6706John McCall return 0; 1741ed97649e9574b9d854fa4d6109c9333ae0993554John McCall} 1742ed97649e9574b9d854fa4d6109c9333ae0993554John McCall 17437ba107a1863ddfa1664555854f0d7bdb3c491c92John McCallDecl * TemplateDeclInstantiator 17447ba107a1863ddfa1664555854f0d7bdb3c491c92John McCall ::VisitUnresolvedUsingTypenameDecl(UnresolvedUsingTypenameDecl *D) { 17457ba107a1863ddfa1664555854f0d7bdb3c491c92John McCall NestedNameSpecifier *NNS = 17467ba107a1863ddfa1664555854f0d7bdb3c491c92John McCall SemaRef.SubstNestedNameSpecifier(D->getTargetNestedNameSpecifier(), 17477ba107a1863ddfa1664555854f0d7bdb3c491c92John McCall D->getTargetNestedNameRange(), 17487ba107a1863ddfa1664555854f0d7bdb3c491c92John McCall TemplateArgs); 17497ba107a1863ddfa1664555854f0d7bdb3c491c92John McCall if (!NNS) 17507ba107a1863ddfa1664555854f0d7bdb3c491c92John McCall return 0; 17517ba107a1863ddfa1664555854f0d7bdb3c491c92John McCall 17527ba107a1863ddfa1664555854f0d7bdb3c491c92John McCall CXXScopeSpec SS; 17537ba107a1863ddfa1664555854f0d7bdb3c491c92John McCall SS.setRange(D->getTargetNestedNameRange()); 17547ba107a1863ddfa1664555854f0d7bdb3c491c92John McCall SS.setScopeRep(NNS); 17557ba107a1863ddfa1664555854f0d7bdb3c491c92John McCall 1756ef3dce817d43faadbf21ce9102d33a9d84b02e09Abramo Bagnara // Since NameInfo refers to a typename, it cannot be a C++ special name. 1757ef3dce817d43faadbf21ce9102d33a9d84b02e09Abramo Bagnara // Hence, no tranformation is required for it. 1758ef3dce817d43faadbf21ce9102d33a9d84b02e09Abramo Bagnara DeclarationNameInfo NameInfo(D->getDeclName(), D->getLocation()); 17597ba107a1863ddfa1664555854f0d7bdb3c491c92John McCall NamedDecl *UD = 17607ba107a1863ddfa1664555854f0d7bdb3c491c92John McCall SemaRef.BuildUsingDeclaration(/*Scope*/ 0, D->getAccess(), 1761ef3dce817d43faadbf21ce9102d33a9d84b02e09Abramo Bagnara D->getUsingLoc(), SS, NameInfo, 0, 17627ba107a1863ddfa1664555854f0d7bdb3c491c92John McCall /*instantiation*/ true, 17637ba107a1863ddfa1664555854f0d7bdb3c491c92John McCall /*typename*/ true, D->getTypenameLoc()); 17644469e8a97cdca3725b4f8f366916143113c029acDouglas Gregor if (UD) 1765ed97649e9574b9d854fa4d6109c9333ae0993554John McCall SemaRef.Context.setInstantiatedFromUsingDecl(cast<UsingDecl>(UD), D); 1766ed97649e9574b9d854fa4d6109c9333ae0993554John McCall 17677ba107a1863ddfa1664555854f0d7bdb3c491c92John McCall return UD; 17687ba107a1863ddfa1664555854f0d7bdb3c491c92John McCall} 17697ba107a1863ddfa1664555854f0d7bdb3c491c92John McCall 17707ba107a1863ddfa1664555854f0d7bdb3c491c92John McCallDecl * TemplateDeclInstantiator 17717ba107a1863ddfa1664555854f0d7bdb3c491c92John McCall ::VisitUnresolvedUsingValueDecl(UnresolvedUsingValueDecl *D) { 17721eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump NestedNameSpecifier *NNS = 17731eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump SemaRef.SubstNestedNameSpecifier(D->getTargetNestedNameSpecifier(), 17741eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump D->getTargetNestedNameRange(), 17750dde18e5a713bc186062ca1ebc9967500b07faeeAnders Carlsson TemplateArgs); 17760dde18e5a713bc186062ca1ebc9967500b07faeeAnders Carlsson if (!NNS) 17770dde18e5a713bc186062ca1ebc9967500b07faeeAnders Carlsson return 0; 17781eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 17790dde18e5a713bc186062ca1ebc9967500b07faeeAnders Carlsson CXXScopeSpec SS; 17800dde18e5a713bc186062ca1ebc9967500b07faeeAnders Carlsson SS.setRange(D->getTargetNestedNameRange()); 17810dde18e5a713bc186062ca1ebc9967500b07faeeAnders Carlsson SS.setScopeRep(NNS); 17821eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1783ef3dce817d43faadbf21ce9102d33a9d84b02e09Abramo Bagnara DeclarationNameInfo NameInfo 1784ef3dce817d43faadbf21ce9102d33a9d84b02e09Abramo Bagnara = SemaRef.SubstDeclarationNameInfo(D->getNameInfo(), TemplateArgs); 1785ef3dce817d43faadbf21ce9102d33a9d84b02e09Abramo Bagnara 17861eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump NamedDecl *UD = 17879488ea120e093068021f944176c3d610dd540914John McCall SemaRef.BuildUsingDeclaration(/*Scope*/ 0, D->getAccess(), 1788ef3dce817d43faadbf21ce9102d33a9d84b02e09Abramo Bagnara D->getUsingLoc(), SS, NameInfo, 0, 17897ba107a1863ddfa1664555854f0d7bdb3c491c92John McCall /*instantiation*/ true, 17907ba107a1863ddfa1664555854f0d7bdb3c491c92John McCall /*typename*/ false, SourceLocation()); 17914469e8a97cdca3725b4f8f366916143113c029acDouglas Gregor if (UD) 1792ed97649e9574b9d854fa4d6109c9333ae0993554John McCall SemaRef.Context.setInstantiatedFromUsingDecl(cast<UsingDecl>(UD), D); 1793ed97649e9574b9d854fa4d6109c9333ae0993554John McCall 17940d8df780aef1acda5962347a32591efc629b6748Anders Carlsson return UD; 17950dde18e5a713bc186062ca1ebc9967500b07faeeAnders Carlsson} 17960dde18e5a713bc186062ca1ebc9967500b07faeeAnders Carlsson 1797ce3ff2bd3a3386dbc209d3cba4b8769173b274c1John McCallDecl *Sema::SubstDecl(Decl *D, DeclContext *Owner, 1798d6350aefb1396b299e199c7f1fe51bb40c12e75eDouglas Gregor const MultiLevelTemplateArgumentList &TemplateArgs) { 17997e06390f8a60440d6fc5f0e633acdc2edd8ee924Douglas Gregor TemplateDeclInstantiator Instantiator(*this, Owner, TemplateArgs); 18002fa98001f832836e3f652c211a9d2f80501d659aDouglas Gregor if (D->isInvalidDecl()) 18012fa98001f832836e3f652c211a9d2f80501d659aDouglas Gregor return 0; 18022fa98001f832836e3f652c211a9d2f80501d659aDouglas Gregor 18038dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor return Instantiator.Visit(D); 18048dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor} 18058dbc2694424b4e842b1d5ea39744a137b58600c3Douglas Gregor 1806e29ba20148e9b7835ad463b39cd4ee9223eafbbfJohn McCall/// \brief Instantiates a nested template parameter list in the current 1807e29ba20148e9b7835ad463b39cd4ee9223eafbbfJohn McCall/// instantiation context. 1808e29ba20148e9b7835ad463b39cd4ee9223eafbbfJohn McCall/// 1809e29ba20148e9b7835ad463b39cd4ee9223eafbbfJohn McCall/// \param L The parameter list to instantiate 1810e29ba20148e9b7835ad463b39cd4ee9223eafbbfJohn McCall/// 1811e29ba20148e9b7835ad463b39cd4ee9223eafbbfJohn McCall/// \returns NULL if there was an error 1812e29ba20148e9b7835ad463b39cd4ee9223eafbbfJohn McCallTemplateParameterList * 1813ce3ff2bd3a3386dbc209d3cba4b8769173b274c1John McCallTemplateDeclInstantiator::SubstTemplateParams(TemplateParameterList *L) { 1814e29ba20148e9b7835ad463b39cd4ee9223eafbbfJohn McCall // Get errors for all the parameters before bailing out. 1815e29ba20148e9b7835ad463b39cd4ee9223eafbbfJohn McCall bool Invalid = false; 1816e29ba20148e9b7835ad463b39cd4ee9223eafbbfJohn McCall 1817e29ba20148e9b7835ad463b39cd4ee9223eafbbfJohn McCall unsigned N = L->size(); 1818bf4ea56cdc376cef5a12abf6bf18dc34805c2226Douglas Gregor typedef llvm::SmallVector<NamedDecl *, 8> ParamVector; 1819e29ba20148e9b7835ad463b39cd4ee9223eafbbfJohn McCall ParamVector Params; 1820e29ba20148e9b7835ad463b39cd4ee9223eafbbfJohn McCall Params.reserve(N); 1821e29ba20148e9b7835ad463b39cd4ee9223eafbbfJohn McCall for (TemplateParameterList::iterator PI = L->begin(), PE = L->end(); 1822e29ba20148e9b7835ad463b39cd4ee9223eafbbfJohn McCall PI != PE; ++PI) { 1823bf4ea56cdc376cef5a12abf6bf18dc34805c2226Douglas Gregor NamedDecl *D = cast_or_null<NamedDecl>(Visit(*PI)); 1824e29ba20148e9b7835ad463b39cd4ee9223eafbbfJohn McCall Params.push_back(D); 18259148c3f5829f4d031249faeb1043e7be914539e8Douglas Gregor Invalid = Invalid || !D || D->isInvalidDecl(); 1826e29ba20148e9b7835ad463b39cd4ee9223eafbbfJohn McCall } 1827e29ba20148e9b7835ad463b39cd4ee9223eafbbfJohn McCall 1828e29ba20148e9b7835ad463b39cd4ee9223eafbbfJohn McCall // Clean up if we had an error. 1829ff331c15729f7d4439d253c97f4d60f2a7ffd0c6Douglas Gregor if (Invalid) 1830e29ba20148e9b7835ad463b39cd4ee9223eafbbfJohn McCall return NULL; 1831e29ba20148e9b7835ad463b39cd4ee9223eafbbfJohn McCall 1832e29ba20148e9b7835ad463b39cd4ee9223eafbbfJohn McCall TemplateParameterList *InstL 1833e29ba20148e9b7835ad463b39cd4ee9223eafbbfJohn McCall = TemplateParameterList::Create(SemaRef.Context, L->getTemplateLoc(), 1834e29ba20148e9b7835ad463b39cd4ee9223eafbbfJohn McCall L->getLAngleLoc(), &Params.front(), N, 1835e29ba20148e9b7835ad463b39cd4ee9223eafbbfJohn McCall L->getRAngleLoc()); 1836e29ba20148e9b7835ad463b39cd4ee9223eafbbfJohn McCall return InstL; 18371eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump} 1838e29ba20148e9b7835ad463b39cd4ee9223eafbbfJohn McCall 1839ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor/// \brief Instantiate the declaration of a class template partial 1840ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor/// specialization. 1841ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor/// 1842ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor/// \param ClassTemplate the (instantiated) class template that is partially 1843ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor// specialized by the instantiation of \p PartialSpec. 1844ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor/// 1845ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor/// \param PartialSpec the (uninstantiated) class template partial 1846ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor/// specialization that we are instantiating. 1847ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor/// 1848d65587f7a6d38965fa37158d3f57990a7faf3836Douglas Gregor/// \returns The instantiated partial specialization, if successful; otherwise, 1849d65587f7a6d38965fa37158d3f57990a7faf3836Douglas Gregor/// NULL to indicate an error. 1850d65587f7a6d38965fa37158d3f57990a7faf3836Douglas GregorClassTemplatePartialSpecializationDecl * 1851ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas GregorTemplateDeclInstantiator::InstantiateClassTemplatePartialSpecialization( 1852ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor ClassTemplateDecl *ClassTemplate, 1853ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor ClassTemplatePartialSpecializationDecl *PartialSpec) { 1854550d9b28fd586db541eb6dd36f3c10d114e483d8Douglas Gregor // Create a local instantiation scope for this class template partial 1855550d9b28fd586db541eb6dd36f3c10d114e483d8Douglas Gregor // specialization, which will contain the instantiations of the template 1856550d9b28fd586db541eb6dd36f3c10d114e483d8Douglas Gregor // parameters. 18572a7fb27913999d132cf9e10e03dc5271faa2e9d3John McCall LocalInstantiationScope Scope(SemaRef); 1858550d9b28fd586db541eb6dd36f3c10d114e483d8Douglas Gregor 1859ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor // Substitute into the template parameters of the class template partial 1860ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor // specialization. 1861ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor TemplateParameterList *TempParams = PartialSpec->getTemplateParameters(); 1862ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor TemplateParameterList *InstParams = SubstTemplateParams(TempParams); 1863ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor if (!InstParams) 1864d65587f7a6d38965fa37158d3f57990a7faf3836Douglas Gregor return 0; 1865ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor 1866ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor // Substitute into the template arguments of the class template partial 1867ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor // specialization. 1868d5532b6cfff2977e0c59fa6ead7f7973984a620dJohn McCall TemplateArgumentListInfo InstTemplateArgs; // no angle locations 1869e02e26293cf8e3bad1059b39cea75c6582896da6Douglas Gregor if (SemaRef.Subst(PartialSpec->getTemplateArgsAsWritten(), 1870e02e26293cf8e3bad1059b39cea75c6582896da6Douglas Gregor PartialSpec->getNumTemplateArgsAsWritten(), 1871e02e26293cf8e3bad1059b39cea75c6582896da6Douglas Gregor InstTemplateArgs, TemplateArgs)) 1872e02e26293cf8e3bad1059b39cea75c6582896da6Douglas Gregor return 0; 1873ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor 1874ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor // Check that the template argument list is well-formed for this 1875ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor // class template. 1876910f8008fea79120489a53593fe971b0b8a4a740Douglas Gregor llvm::SmallVector<TemplateArgument, 4> Converted; 1877ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor if (SemaRef.CheckTemplateArgumentList(ClassTemplate, 1878ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor PartialSpec->getLocation(), 1879d5532b6cfff2977e0c59fa6ead7f7973984a620dJohn McCall InstTemplateArgs, 1880ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor false, 1881ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor Converted)) 1882d65587f7a6d38965fa37158d3f57990a7faf3836Douglas Gregor return 0; 1883ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor 1884ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor // Figure out where to insert this class template partial specialization 1885ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor // in the member template's set of class template partial specializations. 1886ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor void *InsertPos = 0; 1887ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor ClassTemplateSpecializationDecl *PrevDecl 1888910f8008fea79120489a53593fe971b0b8a4a740Douglas Gregor = ClassTemplate->findPartialSpecialization(Converted.data(), 1889910f8008fea79120489a53593fe971b0b8a4a740Douglas Gregor Converted.size(), InsertPos); 1890ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor 1891ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor // Build the canonical type that describes the converted template 1892ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor // arguments of the class template partial specialization. 1893ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor QualType CanonType 1894ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor = SemaRef.Context.getTemplateSpecializationType(TemplateName(ClassTemplate), 1895910f8008fea79120489a53593fe971b0b8a4a740Douglas Gregor Converted.data(), 1896910f8008fea79120489a53593fe971b0b8a4a740Douglas Gregor Converted.size()); 1897ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor 1898ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor // Build the fully-sugared type for this class template 1899ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor // specialization as the user wrote in the specialization 1900ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor // itself. This means that we'll pretty-print the type retrieved 1901ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor // from the specialization's declaration the way that the user 1902ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor // actually wrote the specialization, rather than formatting the 1903ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor // name based on the "canonical" representation used to store the 1904ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor // template arguments in the specialization. 19053cb0ebd5f76abcb776f7cb4062bd79e3268c0dc4John McCall TypeSourceInfo *WrittenTy 19063cb0ebd5f76abcb776f7cb4062bd79e3268c0dc4John McCall = SemaRef.Context.getTemplateSpecializationTypeInfo( 19073cb0ebd5f76abcb776f7cb4062bd79e3268c0dc4John McCall TemplateName(ClassTemplate), 19083cb0ebd5f76abcb776f7cb4062bd79e3268c0dc4John McCall PartialSpec->getLocation(), 1909d5532b6cfff2977e0c59fa6ead7f7973984a620dJohn McCall InstTemplateArgs, 1910ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor CanonType); 1911ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor 1912ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor if (PrevDecl) { 1913ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor // We've already seen a partial specialization with the same template 1914ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor // parameters and template arguments. This can happen, for example, when 1915ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor // substituting the outer template arguments ends up causing two 1916ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor // class template partial specializations of a member class template 1917ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor // to have identical forms, e.g., 1918ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor // 1919ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor // template<typename T, typename U> 1920ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor // struct Outer { 1921ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor // template<typename X, typename Y> struct Inner; 1922ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor // template<typename Y> struct Inner<T, Y>; 1923ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor // template<typename Y> struct Inner<U, Y>; 1924ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor // }; 1925ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor // 1926ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor // Outer<int, int> outer; // error: the partial specializations of Inner 1927ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor // // have the same signature. 1928ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor SemaRef.Diag(PartialSpec->getLocation(), diag::err_partial_spec_redeclared) 1929d65587f7a6d38965fa37158d3f57990a7faf3836Douglas Gregor << WrittenTy->getType(); 1930ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor SemaRef.Diag(PrevDecl->getLocation(), diag::note_prev_partial_spec_here) 1931ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor << SemaRef.Context.getTypeDeclType(PrevDecl); 1932d65587f7a6d38965fa37158d3f57990a7faf3836Douglas Gregor return 0; 1933ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor } 1934ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor 1935ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor 1936ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor // Create the class template partial specialization declaration. 1937ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor ClassTemplatePartialSpecializationDecl *InstPartialSpec 193813c8577201e4fc0ddac5f09d05fd1778832137d1Douglas Gregor = ClassTemplatePartialSpecializationDecl::Create(SemaRef.Context, 193913c8577201e4fc0ddac5f09d05fd1778832137d1Douglas Gregor PartialSpec->getTagKind(), 194013c8577201e4fc0ddac5f09d05fd1778832137d1Douglas Gregor Owner, 1941ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor PartialSpec->getLocation(), 1942ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor InstParams, 1943ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor ClassTemplate, 1944910f8008fea79120489a53593fe971b0b8a4a740Douglas Gregor Converted.data(), 1945910f8008fea79120489a53593fe971b0b8a4a740Douglas Gregor Converted.size(), 1946d5532b6cfff2977e0c59fa6ead7f7973984a620dJohn McCall InstTemplateArgs, 19473cb0ebd5f76abcb776f7cb4062bd79e3268c0dc4John McCall CanonType, 1948dc60c1eb4acbde6edcec9760de92f9098593d915Douglas Gregor 0, 1949cc0b1bc979b650a8a8b34b2032a074fd7724a90dArgyrios Kyrtzidis ClassTemplate->getNextPartialSpecSequenceNumber()); 1950b6217665c6a987f2d6c8665fd70365d7719ac4dfJohn McCall // Substitute the nested name specifier, if any. 1951b6217665c6a987f2d6c8665fd70365d7719ac4dfJohn McCall if (SubstQualifier(PartialSpec, InstPartialSpec)) 1952b6217665c6a987f2d6c8665fd70365d7719ac4dfJohn McCall return 0; 1953b6217665c6a987f2d6c8665fd70365d7719ac4dfJohn McCall 1954ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor InstPartialSpec->setInstantiatedFromMember(PartialSpec); 19554469e8a97cdca3725b4f8f366916143113c029acDouglas Gregor InstPartialSpec->setTypeAsWritten(WrittenTy); 19564469e8a97cdca3725b4f8f366916143113c029acDouglas Gregor 1957ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor // Add this partial specialization to the set of class template partial 1958ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor // specializations. 1959cc0b1bc979b650a8a8b34b2032a074fd7724a90dArgyrios Kyrtzidis ClassTemplate->AddPartialSpecialization(InstPartialSpec, InsertPos); 1960d65587f7a6d38965fa37158d3f57990a7faf3836Douglas Gregor return InstPartialSpec; 1961ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor} 1962ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor 196321ef0fa27b0783ec0bc6aa5b524feb2ec840f952John McCallTypeSourceInfo* 196421ef0fa27b0783ec0bc6aa5b524feb2ec840f952John McCallTemplateDeclInstantiator::SubstFunctionType(FunctionDecl *D, 196521ef0fa27b0783ec0bc6aa5b524feb2ec840f952John McCall llvm::SmallVectorImpl<ParmVarDecl *> &Params) { 196621ef0fa27b0783ec0bc6aa5b524feb2ec840f952John McCall TypeSourceInfo *OldTInfo = D->getTypeSourceInfo(); 196721ef0fa27b0783ec0bc6aa5b524feb2ec840f952John McCall assert(OldTInfo && "substituting function without type source info"); 196821ef0fa27b0783ec0bc6aa5b524feb2ec840f952John McCall assert(Params.empty() && "parameter vector is non-empty at start"); 19696cd3b9fb8a29bb70fff01719bdde238723d67c10John McCall TypeSourceInfo *NewTInfo 19706cd3b9fb8a29bb70fff01719bdde238723d67c10John McCall = SemaRef.SubstFunctionDeclType(OldTInfo, TemplateArgs, 19716cd3b9fb8a29bb70fff01719bdde238723d67c10John McCall D->getTypeSpecStartLoc(), 19726cd3b9fb8a29bb70fff01719bdde238723d67c10John McCall D->getDeclName()); 197321ef0fa27b0783ec0bc6aa5b524feb2ec840f952John McCall if (!NewTInfo) 197421ef0fa27b0783ec0bc6aa5b524feb2ec840f952John McCall return 0; 19755545e166a956a20d7a6b58408e251a1119025485Douglas Gregor 1976cb27b0f70d2017295776afafe3616e0bcd74ab51Douglas Gregor if (NewTInfo != OldTInfo) { 1977cb27b0f70d2017295776afafe3616e0bcd74ab51Douglas Gregor // Get parameters from the new type info. 1978140a2bd77539b4537010d8cd6a0a3805ce724b3eAbramo Bagnara TypeLoc OldTL = OldTInfo->getTypeLoc().IgnoreParens(); 19796920cdce298ac9ba50dc7ebb7dea982a300b0664Douglas Gregor if (FunctionProtoTypeLoc *OldProtoLoc 19806920cdce298ac9ba50dc7ebb7dea982a300b0664Douglas Gregor = dyn_cast<FunctionProtoTypeLoc>(&OldTL)) { 1981140a2bd77539b4537010d8cd6a0a3805ce724b3eAbramo Bagnara TypeLoc NewTL = NewTInfo->getTypeLoc().IgnoreParens(); 19826920cdce298ac9ba50dc7ebb7dea982a300b0664Douglas Gregor FunctionProtoTypeLoc *NewProtoLoc = cast<FunctionProtoTypeLoc>(&NewTL); 19836920cdce298ac9ba50dc7ebb7dea982a300b0664Douglas Gregor assert(NewProtoLoc && "Missing prototype?"); 198412c9c00024a01819e3a70ef6d951d32efaeb9312Douglas Gregor unsigned NewIdx = 0, NumNewParams = NewProtoLoc->getNumArgs(); 198512c9c00024a01819e3a70ef6d951d32efaeb9312Douglas Gregor for (unsigned OldIdx = 0, NumOldParams = OldProtoLoc->getNumArgs(); 198612c9c00024a01819e3a70ef6d951d32efaeb9312Douglas Gregor OldIdx != NumOldParams; ++OldIdx) { 198712c9c00024a01819e3a70ef6d951d32efaeb9312Douglas Gregor ParmVarDecl *OldParam = OldProtoLoc->getArg(OldIdx); 198812c9c00024a01819e3a70ef6d951d32efaeb9312Douglas Gregor if (!OldParam->isParameterPack() || 198912c9c00024a01819e3a70ef6d951d32efaeb9312Douglas Gregor (NewIdx < NumNewParams && 199012c9c00024a01819e3a70ef6d951d32efaeb9312Douglas Gregor NewProtoLoc->getArg(NewIdx)->isParameterPack())) { 199112c9c00024a01819e3a70ef6d951d32efaeb9312Douglas Gregor // Simple case: normal parameter, or a parameter pack that's 199212c9c00024a01819e3a70ef6d951d32efaeb9312Douglas Gregor // instantiated to a (still-dependent) parameter pack. 199312c9c00024a01819e3a70ef6d951d32efaeb9312Douglas Gregor ParmVarDecl *NewParam = NewProtoLoc->getArg(NewIdx++); 199412c9c00024a01819e3a70ef6d951d32efaeb9312Douglas Gregor Params.push_back(NewParam); 199512c9c00024a01819e3a70ef6d951d32efaeb9312Douglas Gregor SemaRef.CurrentInstantiationScope->InstantiatedLocal(OldParam, 199612c9c00024a01819e3a70ef6d951d32efaeb9312Douglas Gregor NewParam); 199712c9c00024a01819e3a70ef6d951d32efaeb9312Douglas Gregor continue; 199812c9c00024a01819e3a70ef6d951d32efaeb9312Douglas Gregor } 199912c9c00024a01819e3a70ef6d951d32efaeb9312Douglas Gregor 200012c9c00024a01819e3a70ef6d951d32efaeb9312Douglas Gregor // Parameter pack: make the instantiation an argument pack. 200112c9c00024a01819e3a70ef6d951d32efaeb9312Douglas Gregor SemaRef.CurrentInstantiationScope->MakeInstantiatedLocalArgPack( 200212c9c00024a01819e3a70ef6d951d32efaeb9312Douglas Gregor OldParam); 200321371ea7cf647f4f0f783faac325925cb8febb1cDouglas Gregor unsigned NumArgumentsInExpansion 200421371ea7cf647f4f0f783faac325925cb8febb1cDouglas Gregor = SemaRef.getNumArgumentsInExpansion(OldParam->getType(), 200521371ea7cf647f4f0f783faac325925cb8febb1cDouglas Gregor TemplateArgs); 200621371ea7cf647f4f0f783faac325925cb8febb1cDouglas Gregor while (NumArgumentsInExpansion--) { 200712c9c00024a01819e3a70ef6d951d32efaeb9312Douglas Gregor ParmVarDecl *NewParam = NewProtoLoc->getArg(NewIdx++); 200812c9c00024a01819e3a70ef6d951d32efaeb9312Douglas Gregor Params.push_back(NewParam); 200912c9c00024a01819e3a70ef6d951d32efaeb9312Douglas Gregor SemaRef.CurrentInstantiationScope->InstantiatedLocalPackArg(OldParam, 201012c9c00024a01819e3a70ef6d951d32efaeb9312Douglas Gregor NewParam); 201112c9c00024a01819e3a70ef6d951d32efaeb9312Douglas Gregor } 20126920cdce298ac9ba50dc7ebb7dea982a300b0664Douglas Gregor } 2013895162da2d52f4243f61081d7436de66af4503fcDouglas Gregor } 2014cb27b0f70d2017295776afafe3616e0bcd74ab51Douglas Gregor } else { 2015cb27b0f70d2017295776afafe3616e0bcd74ab51Douglas Gregor // The function type itself was not dependent and therefore no 2016cb27b0f70d2017295776afafe3616e0bcd74ab51Douglas Gregor // substitution occurred. However, we still need to instantiate 2017cb27b0f70d2017295776afafe3616e0bcd74ab51Douglas Gregor // the function parameters themselves. 2018140a2bd77539b4537010d8cd6a0a3805ce724b3eAbramo Bagnara TypeLoc OldTL = OldTInfo->getTypeLoc().IgnoreParens(); 20196920cdce298ac9ba50dc7ebb7dea982a300b0664Douglas Gregor if (FunctionProtoTypeLoc *OldProtoLoc 20206920cdce298ac9ba50dc7ebb7dea982a300b0664Douglas Gregor = dyn_cast<FunctionProtoTypeLoc>(&OldTL)) { 20216920cdce298ac9ba50dc7ebb7dea982a300b0664Douglas Gregor for (unsigned i = 0, i_end = OldProtoLoc->getNumArgs(); i != i_end; ++i) { 20226920cdce298ac9ba50dc7ebb7dea982a300b0664Douglas Gregor ParmVarDecl *Parm = VisitParmVarDecl(OldProtoLoc->getArg(i)); 20236920cdce298ac9ba50dc7ebb7dea982a300b0664Douglas Gregor if (!Parm) 20246920cdce298ac9ba50dc7ebb7dea982a300b0664Douglas Gregor return 0; 20256920cdce298ac9ba50dc7ebb7dea982a300b0664Douglas Gregor Params.push_back(Parm); 20266920cdce298ac9ba50dc7ebb7dea982a300b0664Douglas Gregor } 2027cb27b0f70d2017295776afafe3616e0bcd74ab51Douglas Gregor } 2028cb27b0f70d2017295776afafe3616e0bcd74ab51Douglas Gregor } 202921ef0fa27b0783ec0bc6aa5b524feb2ec840f952John McCall return NewTInfo; 20305545e166a956a20d7a6b58408e251a1119025485Douglas Gregor} 20315545e166a956a20d7a6b58408e251a1119025485Douglas Gregor 20321eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// \brief Initializes the common fields of an instantiation function 2033e53060fa78ad7e98352049f72787bdb7543e2a48Douglas Gregor/// declaration (New) from the corresponding fields of its template (Tmpl). 2034e53060fa78ad7e98352049f72787bdb7543e2a48Douglas Gregor/// 2035e53060fa78ad7e98352049f72787bdb7543e2a48Douglas Gregor/// \returns true if there was an error 20361eb4433ac451dc16f4133a88af2d002ac26c58efMike Stumpbool 20371eb4433ac451dc16f4133a88af2d002ac26c58efMike StumpTemplateDeclInstantiator::InitFunctionInstantiation(FunctionDecl *New, 2038e53060fa78ad7e98352049f72787bdb7543e2a48Douglas Gregor FunctionDecl *Tmpl) { 2039e53060fa78ad7e98352049f72787bdb7543e2a48Douglas Gregor if (Tmpl->isDeleted()) 2040e53060fa78ad7e98352049f72787bdb7543e2a48Douglas Gregor New->setDeleted(); 20411eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2042cca9e9674a5e50a283185d8e9d8a5c3414eb008eDouglas Gregor // If we are performing substituting explicitly-specified template arguments 2043cca9e9674a5e50a283185d8e9d8a5c3414eb008eDouglas Gregor // or deduced template arguments into a function template and we reach this 2044cca9e9674a5e50a283185d8e9d8a5c3414eb008eDouglas Gregor // point, we are now past the point where SFINAE applies and have committed 20451eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // to keeping the new function template specialization. We therefore 20461eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // convert the active template instantiation for the function template 2047cca9e9674a5e50a283185d8e9d8a5c3414eb008eDouglas Gregor // into a template instantiation for this specific function template 2048cca9e9674a5e50a283185d8e9d8a5c3414eb008eDouglas Gregor // specialization, which is not a SFINAE context, so that we diagnose any 2049cca9e9674a5e50a283185d8e9d8a5c3414eb008eDouglas Gregor // further errors in the declaration itself. 2050cca9e9674a5e50a283185d8e9d8a5c3414eb008eDouglas Gregor typedef Sema::ActiveTemplateInstantiation ActiveInstType; 2051cca9e9674a5e50a283185d8e9d8a5c3414eb008eDouglas Gregor ActiveInstType &ActiveInst = SemaRef.ActiveTemplateInstantiations.back(); 2052cca9e9674a5e50a283185d8e9d8a5c3414eb008eDouglas Gregor if (ActiveInst.Kind == ActiveInstType::ExplicitTemplateArgumentSubstitution || 2053cca9e9674a5e50a283185d8e9d8a5c3414eb008eDouglas Gregor ActiveInst.Kind == ActiveInstType::DeducedTemplateArgumentSubstitution) { 20541eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (FunctionTemplateDecl *FunTmpl 2055cca9e9674a5e50a283185d8e9d8a5c3414eb008eDouglas Gregor = dyn_cast<FunctionTemplateDecl>((Decl *)ActiveInst.Entity)) { 20561eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump assert(FunTmpl->getTemplatedDecl() == Tmpl && 2057cca9e9674a5e50a283185d8e9d8a5c3414eb008eDouglas Gregor "Deduction from the wrong function template?"); 2058bcbb8bd3326a86aa70b7df386ae3c86c9ad255c5Daniel Dunbar (void) FunTmpl; 2059cca9e9674a5e50a283185d8e9d8a5c3414eb008eDouglas Gregor ActiveInst.Kind = ActiveInstType::TemplateInstantiation; 2060cca9e9674a5e50a283185d8e9d8a5c3414eb008eDouglas Gregor ActiveInst.Entity = reinterpret_cast<uintptr_t>(New); 2061f35f828f9883123772a9731af190a608f3236ef4Douglas Gregor --SemaRef.NonInstantiationEntries; 2062cca9e9674a5e50a283185d8e9d8a5c3414eb008eDouglas Gregor } 2063cca9e9674a5e50a283185d8e9d8a5c3414eb008eDouglas Gregor } 20641eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 20650ae7b3f1d5403265f693ed75384603ca8fbba74dDouglas Gregor const FunctionProtoType *Proto = Tmpl->getType()->getAs<FunctionProtoType>(); 20660ae7b3f1d5403265f693ed75384603ca8fbba74dDouglas Gregor assert(Proto && "Function template without prototype?"); 20670ae7b3f1d5403265f693ed75384603ca8fbba74dDouglas Gregor 20680ae7b3f1d5403265f693ed75384603ca8fbba74dDouglas Gregor if (Proto->hasExceptionSpec() || Proto->hasAnyExceptionSpec() || 20690ae7b3f1d5403265f693ed75384603ca8fbba74dDouglas Gregor Proto->getNoReturnAttr()) { 20700ae7b3f1d5403265f693ed75384603ca8fbba74dDouglas Gregor // The function has an exception specification or a "noreturn" 20710ae7b3f1d5403265f693ed75384603ca8fbba74dDouglas Gregor // attribute. Substitute into each of the exception types. 20720ae7b3f1d5403265f693ed75384603ca8fbba74dDouglas Gregor llvm::SmallVector<QualType, 4> Exceptions; 20730ae7b3f1d5403265f693ed75384603ca8fbba74dDouglas Gregor for (unsigned I = 0, N = Proto->getNumExceptions(); I != N; ++I) { 20740ae7b3f1d5403265f693ed75384603ca8fbba74dDouglas Gregor // FIXME: Poor location information! 2075b99268b3083c882103bd1bd08bdcc9a76a2b4795Douglas Gregor if (const PackExpansionType *PackExpansion 2076b99268b3083c882103bd1bd08bdcc9a76a2b4795Douglas Gregor = Proto->getExceptionType(I)->getAs<PackExpansionType>()) { 2077b99268b3083c882103bd1bd08bdcc9a76a2b4795Douglas Gregor // We have a pack expansion. Instantiate it. 2078b99268b3083c882103bd1bd08bdcc9a76a2b4795Douglas Gregor llvm::SmallVector<UnexpandedParameterPack, 2> Unexpanded; 2079b99268b3083c882103bd1bd08bdcc9a76a2b4795Douglas Gregor SemaRef.collectUnexpandedParameterPacks(PackExpansion->getPattern(), 2080b99268b3083c882103bd1bd08bdcc9a76a2b4795Douglas Gregor Unexpanded); 2081b99268b3083c882103bd1bd08bdcc9a76a2b4795Douglas Gregor assert(!Unexpanded.empty() && 2082b99268b3083c882103bd1bd08bdcc9a76a2b4795Douglas Gregor "Pack expansion without parameter packs?"); 2083b99268b3083c882103bd1bd08bdcc9a76a2b4795Douglas Gregor 2084b99268b3083c882103bd1bd08bdcc9a76a2b4795Douglas Gregor bool Expand = false; 2085d3731198193eee92796ddeb493973b7a598b003eDouglas Gregor bool RetainExpansion = false; 2086cded4f649cd4b7ba7d461c25c6482ef52b8d3a2aDouglas Gregor llvm::Optional<unsigned> NumExpansions 2087cded4f649cd4b7ba7d461c25c6482ef52b8d3a2aDouglas Gregor = PackExpansion->getNumExpansions(); 2088b99268b3083c882103bd1bd08bdcc9a76a2b4795Douglas Gregor if (SemaRef.CheckParameterPacksForExpansion(New->getLocation(), 2089b99268b3083c882103bd1bd08bdcc9a76a2b4795Douglas Gregor SourceRange(), 2090b99268b3083c882103bd1bd08bdcc9a76a2b4795Douglas Gregor Unexpanded.data(), 2091b99268b3083c882103bd1bd08bdcc9a76a2b4795Douglas Gregor Unexpanded.size(), 2092b99268b3083c882103bd1bd08bdcc9a76a2b4795Douglas Gregor TemplateArgs, 2093d3731198193eee92796ddeb493973b7a598b003eDouglas Gregor Expand, 2094d3731198193eee92796ddeb493973b7a598b003eDouglas Gregor RetainExpansion, 2095d3731198193eee92796ddeb493973b7a598b003eDouglas Gregor NumExpansions)) 2096b99268b3083c882103bd1bd08bdcc9a76a2b4795Douglas Gregor break; 2097b99268b3083c882103bd1bd08bdcc9a76a2b4795Douglas Gregor 2098b99268b3083c882103bd1bd08bdcc9a76a2b4795Douglas Gregor if (!Expand) { 2099b99268b3083c882103bd1bd08bdcc9a76a2b4795Douglas Gregor // We can't expand this pack expansion into separate arguments yet; 2100cded4f649cd4b7ba7d461c25c6482ef52b8d3a2aDouglas Gregor // just substitute into the pattern and create a new pack expansion 2101cded4f649cd4b7ba7d461c25c6482ef52b8d3a2aDouglas Gregor // type. 2102b99268b3083c882103bd1bd08bdcc9a76a2b4795Douglas Gregor Sema::ArgumentPackSubstitutionIndexRAII SubstIndex(SemaRef, -1); 2103b99268b3083c882103bd1bd08bdcc9a76a2b4795Douglas Gregor QualType T = SemaRef.SubstType(PackExpansion->getPattern(), 2104b99268b3083c882103bd1bd08bdcc9a76a2b4795Douglas Gregor TemplateArgs, 2105b99268b3083c882103bd1bd08bdcc9a76a2b4795Douglas Gregor New->getLocation(), New->getDeclName()); 2106b99268b3083c882103bd1bd08bdcc9a76a2b4795Douglas Gregor if (T.isNull()) 2107b99268b3083c882103bd1bd08bdcc9a76a2b4795Douglas Gregor break; 2108b99268b3083c882103bd1bd08bdcc9a76a2b4795Douglas Gregor 2109cded4f649cd4b7ba7d461c25c6482ef52b8d3a2aDouglas Gregor T = SemaRef.Context.getPackExpansionType(T, NumExpansions); 2110b99268b3083c882103bd1bd08bdcc9a76a2b4795Douglas Gregor Exceptions.push_back(T); 2111b99268b3083c882103bd1bd08bdcc9a76a2b4795Douglas Gregor continue; 2112b99268b3083c882103bd1bd08bdcc9a76a2b4795Douglas Gregor } 2113b99268b3083c882103bd1bd08bdcc9a76a2b4795Douglas Gregor 2114b99268b3083c882103bd1bd08bdcc9a76a2b4795Douglas Gregor // Substitute into the pack expansion pattern for each template 2115b99268b3083c882103bd1bd08bdcc9a76a2b4795Douglas Gregor bool Invalid = false; 2116cded4f649cd4b7ba7d461c25c6482ef52b8d3a2aDouglas Gregor for (unsigned ArgIdx = 0; ArgIdx != *NumExpansions; ++ArgIdx) { 2117b99268b3083c882103bd1bd08bdcc9a76a2b4795Douglas Gregor Sema::ArgumentPackSubstitutionIndexRAII SubstIndex(SemaRef, ArgIdx); 2118b99268b3083c882103bd1bd08bdcc9a76a2b4795Douglas Gregor 2119b99268b3083c882103bd1bd08bdcc9a76a2b4795Douglas Gregor QualType T = SemaRef.SubstType(PackExpansion->getPattern(), 2120b99268b3083c882103bd1bd08bdcc9a76a2b4795Douglas Gregor TemplateArgs, 2121b99268b3083c882103bd1bd08bdcc9a76a2b4795Douglas Gregor New->getLocation(), New->getDeclName()); 2122b99268b3083c882103bd1bd08bdcc9a76a2b4795Douglas Gregor if (T.isNull()) { 2123b99268b3083c882103bd1bd08bdcc9a76a2b4795Douglas Gregor Invalid = true; 2124b99268b3083c882103bd1bd08bdcc9a76a2b4795Douglas Gregor break; 2125b99268b3083c882103bd1bd08bdcc9a76a2b4795Douglas Gregor } 2126b99268b3083c882103bd1bd08bdcc9a76a2b4795Douglas Gregor 2127b99268b3083c882103bd1bd08bdcc9a76a2b4795Douglas Gregor Exceptions.push_back(T); 2128b99268b3083c882103bd1bd08bdcc9a76a2b4795Douglas Gregor } 2129b99268b3083c882103bd1bd08bdcc9a76a2b4795Douglas Gregor 2130b99268b3083c882103bd1bd08bdcc9a76a2b4795Douglas Gregor if (Invalid) 2131b99268b3083c882103bd1bd08bdcc9a76a2b4795Douglas Gregor break; 2132b99268b3083c882103bd1bd08bdcc9a76a2b4795Douglas Gregor 2133b99268b3083c882103bd1bd08bdcc9a76a2b4795Douglas Gregor continue; 2134b99268b3083c882103bd1bd08bdcc9a76a2b4795Douglas Gregor } 2135b99268b3083c882103bd1bd08bdcc9a76a2b4795Douglas Gregor 21360ae7b3f1d5403265f693ed75384603ca8fbba74dDouglas Gregor QualType T 21370ae7b3f1d5403265f693ed75384603ca8fbba74dDouglas Gregor = SemaRef.SubstType(Proto->getExceptionType(I), TemplateArgs, 21380ae7b3f1d5403265f693ed75384603ca8fbba74dDouglas Gregor New->getLocation(), New->getDeclName()); 21390ae7b3f1d5403265f693ed75384603ca8fbba74dDouglas Gregor if (T.isNull() || 21400ae7b3f1d5403265f693ed75384603ca8fbba74dDouglas Gregor SemaRef.CheckSpecifiedExceptionType(T, New->getLocation())) 21410ae7b3f1d5403265f693ed75384603ca8fbba74dDouglas Gregor continue; 21420ae7b3f1d5403265f693ed75384603ca8fbba74dDouglas Gregor 21430ae7b3f1d5403265f693ed75384603ca8fbba74dDouglas Gregor Exceptions.push_back(T); 21440ae7b3f1d5403265f693ed75384603ca8fbba74dDouglas Gregor } 21450ae7b3f1d5403265f693ed75384603ca8fbba74dDouglas Gregor 21460ae7b3f1d5403265f693ed75384603ca8fbba74dDouglas Gregor // Rebuild the function type 21470ae7b3f1d5403265f693ed75384603ca8fbba74dDouglas Gregor 2148e23cf437fe76b1ed02d63c3f61b456fd48a915f5John McCall FunctionProtoType::ExtProtoInfo EPI = Proto->getExtProtoInfo(); 2149e23cf437fe76b1ed02d63c3f61b456fd48a915f5John McCall EPI.HasExceptionSpec = Proto->hasExceptionSpec(); 2150e23cf437fe76b1ed02d63c3f61b456fd48a915f5John McCall EPI.HasAnyExceptionSpec = Proto->hasAnyExceptionSpec(); 2151e23cf437fe76b1ed02d63c3f61b456fd48a915f5John McCall EPI.NumExceptions = Exceptions.size(); 2152e23cf437fe76b1ed02d63c3f61b456fd48a915f5John McCall EPI.Exceptions = Exceptions.data(); 2153e23cf437fe76b1ed02d63c3f61b456fd48a915f5John McCall EPI.ExtInfo = Proto->getExtInfo(); 2154e23cf437fe76b1ed02d63c3f61b456fd48a915f5John McCall 21550ae7b3f1d5403265f693ed75384603ca8fbba74dDouglas Gregor const FunctionProtoType *NewProto 21560ae7b3f1d5403265f693ed75384603ca8fbba74dDouglas Gregor = New->getType()->getAs<FunctionProtoType>(); 21570ae7b3f1d5403265f693ed75384603ca8fbba74dDouglas Gregor assert(NewProto && "Template instantiation without function prototype?"); 21580ae7b3f1d5403265f693ed75384603ca8fbba74dDouglas Gregor New->setType(SemaRef.Context.getFunctionType(NewProto->getResultType(), 21590ae7b3f1d5403265f693ed75384603ca8fbba74dDouglas Gregor NewProto->arg_type_begin(), 21600ae7b3f1d5403265f693ed75384603ca8fbba74dDouglas Gregor NewProto->getNumArgs(), 2161e23cf437fe76b1ed02d63c3f61b456fd48a915f5John McCall EPI)); 21620ae7b3f1d5403265f693ed75384603ca8fbba74dDouglas Gregor } 21630ae7b3f1d5403265f693ed75384603ca8fbba74dDouglas Gregor 21641d8d1ccd36888f1120b3a1df9e76f35dc2edb81dJohn McCall SemaRef.InstantiateAttrs(TemplateArgs, Tmpl, New); 21657cf84d66965a7706004d8590b5af5fe54b85f525Douglas Gregor 2166e53060fa78ad7e98352049f72787bdb7543e2a48Douglas Gregor return false; 2167e53060fa78ad7e98352049f72787bdb7543e2a48Douglas Gregor} 2168e53060fa78ad7e98352049f72787bdb7543e2a48Douglas Gregor 21695545e166a956a20d7a6b58408e251a1119025485Douglas Gregor/// \brief Initializes common fields of an instantiated method 21705545e166a956a20d7a6b58408e251a1119025485Douglas Gregor/// declaration (New) from the corresponding fields of its template 21715545e166a956a20d7a6b58408e251a1119025485Douglas Gregor/// (Tmpl). 21725545e166a956a20d7a6b58408e251a1119025485Douglas Gregor/// 21735545e166a956a20d7a6b58408e251a1119025485Douglas Gregor/// \returns true if there was an error 21741eb4433ac451dc16f4133a88af2d002ac26c58efMike Stumpbool 21751eb4433ac451dc16f4133a88af2d002ac26c58efMike StumpTemplateDeclInstantiator::InitMethodInstantiation(CXXMethodDecl *New, 21765545e166a956a20d7a6b58408e251a1119025485Douglas Gregor CXXMethodDecl *Tmpl) { 2177e53060fa78ad7e98352049f72787bdb7543e2a48Douglas Gregor if (InitFunctionInstantiation(New, Tmpl)) 2178e53060fa78ad7e98352049f72787bdb7543e2a48Douglas Gregor return true; 21791eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 21805545e166a956a20d7a6b58408e251a1119025485Douglas Gregor New->setAccess(Tmpl->getAccess()); 2181e7184df728bb339633d88c774b5097dd9318cc8aFariborz Jahanian if (Tmpl->isVirtualAsWritten()) 218285606ebf3dd1b5dd81a59ef25b5ad47627664774Douglas Gregor New->setVirtualAsWritten(true); 21835545e166a956a20d7a6b58408e251a1119025485Douglas Gregor 21845545e166a956a20d7a6b58408e251a1119025485Douglas Gregor // FIXME: attributes 21855545e166a956a20d7a6b58408e251a1119025485Douglas Gregor // FIXME: New needs a pointer to Tmpl 21865545e166a956a20d7a6b58408e251a1119025485Douglas Gregor return false; 21875545e166a956a20d7a6b58408e251a1119025485Douglas Gregor} 2188a58861f6490780baec50689e06ca65f7438b85dcDouglas Gregor 2189a58861f6490780baec50689e06ca65f7438b85dcDouglas Gregor/// \brief Instantiate the definition of the given function from its 2190a58861f6490780baec50689e06ca65f7438b85dcDouglas Gregor/// template. 2191a58861f6490780baec50689e06ca65f7438b85dcDouglas Gregor/// 2192b33fe2ff12676bff9db595fdf77e29014d7ba397Douglas Gregor/// \param PointOfInstantiation the point at which the instantiation was 2193b33fe2ff12676bff9db595fdf77e29014d7ba397Douglas Gregor/// required. Note that this is not precisely a "point of instantiation" 2194b33fe2ff12676bff9db595fdf77e29014d7ba397Douglas Gregor/// for the function, but it's close. 2195b33fe2ff12676bff9db595fdf77e29014d7ba397Douglas Gregor/// 2196a58861f6490780baec50689e06ca65f7438b85dcDouglas Gregor/// \param Function the already-instantiated declaration of a 2197b33fe2ff12676bff9db595fdf77e29014d7ba397Douglas Gregor/// function template specialization or member function of a class template 2198b33fe2ff12676bff9db595fdf77e29014d7ba397Douglas Gregor/// specialization. 2199b33fe2ff12676bff9db595fdf77e29014d7ba397Douglas Gregor/// 2200b33fe2ff12676bff9db595fdf77e29014d7ba397Douglas Gregor/// \param Recursive if true, recursively instantiates any functions that 2201b33fe2ff12676bff9db595fdf77e29014d7ba397Douglas Gregor/// are required by this instantiation. 2202e2d3a3de71b2fa35614cb732a6da95a41fa38ad9Douglas Gregor/// 2203e2d3a3de71b2fa35614cb732a6da95a41fa38ad9Douglas Gregor/// \param DefinitionRequired if true, then we are performing an explicit 2204e2d3a3de71b2fa35614cb732a6da95a41fa38ad9Douglas Gregor/// instantiation where the body of the function is required. Complain if 2205e2d3a3de71b2fa35614cb732a6da95a41fa38ad9Douglas Gregor/// there is no such body. 2206f3e7ce4bd9837cdab6a096235922865f95467d3dDouglas Gregorvoid Sema::InstantiateFunctionDefinition(SourceLocation PointOfInstantiation, 2207b33fe2ff12676bff9db595fdf77e29014d7ba397Douglas Gregor FunctionDecl *Function, 2208e2d3a3de71b2fa35614cb732a6da95a41fa38ad9Douglas Gregor bool Recursive, 2209e2d3a3de71b2fa35614cb732a6da95a41fa38ad9Douglas Gregor bool DefinitionRequired) { 221006a54a38be5054c910ffc92db60edab23f9ea105Argyrios Kyrtzidis if (Function->isInvalidDecl() || Function->hasBody()) 221154dabfca850ca9e60e9ffb60003529f868d4d127Douglas Gregor return; 221254dabfca850ca9e60e9ffb60003529f868d4d127Douglas Gregor 2213251b4ff2578e26959a4c036140ccd61c5e9292f2Douglas Gregor // Never instantiate an explicit specialization. 2214251b4ff2578e26959a4c036140ccd61c5e9292f2Douglas Gregor if (Function->getTemplateSpecializationKind() == TSK_ExplicitSpecialization) 2215251b4ff2578e26959a4c036140ccd61c5e9292f2Douglas Gregor return; 22166cfacfe54c75baa4d67f1fbdf4f80644b662818eDouglas Gregor 22171eee0e753fb390b04848846e837714ec774b7bfdDouglas Gregor // Find the function body that we'll be substituting. 22183b846b6c252972a6f142aa226c1e65aebd0feecaDouglas Gregor const FunctionDecl *PatternDecl = Function->getTemplateInstantiationPattern(); 22191eee0e753fb390b04848846e837714ec774b7bfdDouglas Gregor Stmt *Pattern = 0; 22201eee0e753fb390b04848846e837714ec774b7bfdDouglas Gregor if (PatternDecl) 22216fb0aee4f9dc261bbec72e1283ad8dc0557a6d96Argyrios Kyrtzidis Pattern = PatternDecl->getBody(PatternDecl); 22221eee0e753fb390b04848846e837714ec774b7bfdDouglas Gregor 2223e2d3a3de71b2fa35614cb732a6da95a41fa38ad9Douglas Gregor if (!Pattern) { 2224e2d3a3de71b2fa35614cb732a6da95a41fa38ad9Douglas Gregor if (DefinitionRequired) { 2225e2d3a3de71b2fa35614cb732a6da95a41fa38ad9Douglas Gregor if (Function->getPrimaryTemplate()) 2226e2d3a3de71b2fa35614cb732a6da95a41fa38ad9Douglas Gregor Diag(PointOfInstantiation, 2227e2d3a3de71b2fa35614cb732a6da95a41fa38ad9Douglas Gregor diag::err_explicit_instantiation_undefined_func_template) 2228e2d3a3de71b2fa35614cb732a6da95a41fa38ad9Douglas Gregor << Function->getPrimaryTemplate(); 2229e2d3a3de71b2fa35614cb732a6da95a41fa38ad9Douglas Gregor else 2230e2d3a3de71b2fa35614cb732a6da95a41fa38ad9Douglas Gregor Diag(PointOfInstantiation, 2231e2d3a3de71b2fa35614cb732a6da95a41fa38ad9Douglas Gregor diag::err_explicit_instantiation_undefined_member) 2232e2d3a3de71b2fa35614cb732a6da95a41fa38ad9Douglas Gregor << 1 << Function->getDeclName() << Function->getDeclContext(); 2233e2d3a3de71b2fa35614cb732a6da95a41fa38ad9Douglas Gregor 2234e2d3a3de71b2fa35614cb732a6da95a41fa38ad9Douglas Gregor if (PatternDecl) 2235e2d3a3de71b2fa35614cb732a6da95a41fa38ad9Douglas Gregor Diag(PatternDecl->getLocation(), 2236e2d3a3de71b2fa35614cb732a6da95a41fa38ad9Douglas Gregor diag::note_explicit_instantiation_here); 2237cfe833be882f600206f1587f157b025b368497d7Douglas Gregor Function->setInvalidDecl(); 223858e390ef491c8fb11ae17445054ee09527b492d3Chandler Carruth } else if (Function->getTemplateSpecializationKind() 223958e390ef491c8fb11ae17445054ee09527b492d3Chandler Carruth == TSK_ExplicitInstantiationDefinition) { 224062c78d54bee499dd87f768f48b21c9b5ec15e516Chandler Carruth PendingInstantiations.push_back( 224158e390ef491c8fb11ae17445054ee09527b492d3Chandler Carruth std::make_pair(Function, PointOfInstantiation)); 2242e2d3a3de71b2fa35614cb732a6da95a41fa38ad9Douglas Gregor } 224358e390ef491c8fb11ae17445054ee09527b492d3Chandler Carruth 22441eee0e753fb390b04848846e837714ec774b7bfdDouglas Gregor return; 2245e2d3a3de71b2fa35614cb732a6da95a41fa38ad9Douglas Gregor } 22461eee0e753fb390b04848846e837714ec774b7bfdDouglas Gregor 2247d0e3daf2b980b505e535d35b432c938c6d0208efDouglas Gregor // C++0x [temp.explicit]p9: 2248d0e3daf2b980b505e535d35b432c938c6d0208efDouglas Gregor // Except for inline functions, other explicit instantiation declarations 22491eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // have the effect of suppressing the implicit instantiation of the entity 2250d0e3daf2b980b505e535d35b432c938c6d0208efDouglas Gregor // to which they refer. 22511eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (Function->getTemplateSpecializationKind() 2252d0e3daf2b980b505e535d35b432c938c6d0208efDouglas Gregor == TSK_ExplicitInstantiationDeclaration && 22537ced9c8529b734e313f62a3b81189d6f402f6713Douglas Gregor !PatternDecl->isInlined()) 2254d0e3daf2b980b505e535d35b432c938c6d0208efDouglas Gregor return; 22551eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2256f3e7ce4bd9837cdab6a096235922865f95467d3dDouglas Gregor InstantiatingTemplate Inst(*this, PointOfInstantiation, Function); 2257f3e7ce4bd9837cdab6a096235922865f95467d3dDouglas Gregor if (Inst) 2258e7089b0c6ffe8a8854150b60df00fb544099f77dDouglas Gregor return; 2259e7089b0c6ffe8a8854150b60df00fb544099f77dDouglas Gregor 2260b33fe2ff12676bff9db595fdf77e29014d7ba397Douglas Gregor // If we're performing recursive template instantiation, create our own 2261b33fe2ff12676bff9db595fdf77e29014d7ba397Douglas Gregor // queue of pending implicit instantiations that we will instantiate later, 2262b33fe2ff12676bff9db595fdf77e29014d7ba397Douglas Gregor // while we're still within our own instantiation context. 22632a5f99eb4e2af771faacfceb9f78e230129c5e5aNick Lewycky llvm::SmallVector<VTableUse, 16> SavedVTableUses; 226462c78d54bee499dd87f768f48b21c9b5ec15e516Chandler Carruth std::deque<PendingImplicitInstantiation> SavedPendingInstantiations; 22652a5f99eb4e2af771faacfceb9f78e230129c5e5aNick Lewycky if (Recursive) { 22662a5f99eb4e2af771faacfceb9f78e230129c5e5aNick Lewycky VTableUses.swap(SavedVTableUses); 226762c78d54bee499dd87f768f48b21c9b5ec15e516Chandler Carruth PendingInstantiations.swap(SavedPendingInstantiations); 22682a5f99eb4e2af771faacfceb9f78e230129c5e5aNick Lewycky } 22691eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 22709679cafc6368cceed1a5e69d3038d0316401b352Douglas Gregor EnterExpressionEvaluationContext EvalContext(*this, 2271f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall Sema::PotentiallyEvaluated); 2272d226f65006733ed7f709c3174f22ce33391cb58fJohn McCall ActOnStartOfFunctionDef(0, Function); 2273e2c31ff0bc622e6fd7d47d7e08b53840f3be6c89Douglas Gregor 227454dabfca850ca9e60e9ffb60003529f868d4d127Douglas Gregor // Introduce a new scope where local variable instantiations will be 227560406bede202b66ebdd98cac0c38d20f9698aecaDouglas Gregor // recorded, unless we're actually a member function within a local 227660406bede202b66ebdd98cac0c38d20f9698aecaDouglas Gregor // class, in which case we need to merge our results with the parent 227760406bede202b66ebdd98cac0c38d20f9698aecaDouglas Gregor // scope (of the enclosing function). 227860406bede202b66ebdd98cac0c38d20f9698aecaDouglas Gregor bool MergeWithParentScope = false; 227960406bede202b66ebdd98cac0c38d20f9698aecaDouglas Gregor if (CXXRecordDecl *Rec = dyn_cast<CXXRecordDecl>(Function->getDeclContext())) 228060406bede202b66ebdd98cac0c38d20f9698aecaDouglas Gregor MergeWithParentScope = Rec->isLocalClass(); 228160406bede202b66ebdd98cac0c38d20f9698aecaDouglas Gregor 228260406bede202b66ebdd98cac0c38d20f9698aecaDouglas Gregor LocalInstantiationScope Scope(*this, MergeWithParentScope); 22831eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 228454dabfca850ca9e60e9ffb60003529f868d4d127Douglas Gregor // Introduce the instantiated function parameters into the local 22858a6c0f1a48b8167ca1457c9f05288fa637033dc9Peter Collingbourne // instantiation scope, and set the parameter names to those used 22868a6c0f1a48b8167ca1457c9f05288fa637033dc9Peter Collingbourne // in the template. 228712c9c00024a01819e3a70ef6d951d32efaeb9312Douglas Gregor unsigned FParamIdx = 0; 22888a6c0f1a48b8167ca1457c9f05288fa637033dc9Peter Collingbourne for (unsigned I = 0, N = PatternDecl->getNumParams(); I != N; ++I) { 22898a6c0f1a48b8167ca1457c9f05288fa637033dc9Peter Collingbourne const ParmVarDecl *PatternParam = PatternDecl->getParamDecl(I); 229012c9c00024a01819e3a70ef6d951d32efaeb9312Douglas Gregor if (!PatternParam->isParameterPack()) { 229112c9c00024a01819e3a70ef6d951d32efaeb9312Douglas Gregor // Simple case: not a parameter pack. 229212c9c00024a01819e3a70ef6d951d32efaeb9312Douglas Gregor assert(FParamIdx < Function->getNumParams()); 229312c9c00024a01819e3a70ef6d951d32efaeb9312Douglas Gregor ParmVarDecl *FunctionParam = Function->getParamDecl(I); 229412c9c00024a01819e3a70ef6d951d32efaeb9312Douglas Gregor FunctionParam->setDeclName(PatternParam->getDeclName()); 229512c9c00024a01819e3a70ef6d951d32efaeb9312Douglas Gregor Scope.InstantiatedLocal(PatternParam, FunctionParam); 229612c9c00024a01819e3a70ef6d951d32efaeb9312Douglas Gregor ++FParamIdx; 229712c9c00024a01819e3a70ef6d951d32efaeb9312Douglas Gregor continue; 229812c9c00024a01819e3a70ef6d951d32efaeb9312Douglas Gregor } 229912c9c00024a01819e3a70ef6d951d32efaeb9312Douglas Gregor 230012c9c00024a01819e3a70ef6d951d32efaeb9312Douglas Gregor // Expand the parameter pack. 230112c9c00024a01819e3a70ef6d951d32efaeb9312Douglas Gregor Scope.MakeInstantiatedLocalArgPack(PatternParam); 230212c9c00024a01819e3a70ef6d951d32efaeb9312Douglas Gregor for (unsigned NumFParams = Function->getNumParams(); 230312c9c00024a01819e3a70ef6d951d32efaeb9312Douglas Gregor FParamIdx < NumFParams; 230412c9c00024a01819e3a70ef6d951d32efaeb9312Douglas Gregor ++FParamIdx) { 230512c9c00024a01819e3a70ef6d951d32efaeb9312Douglas Gregor ParmVarDecl *FunctionParam = Function->getParamDecl(FParamIdx); 230612c9c00024a01819e3a70ef6d951d32efaeb9312Douglas Gregor FunctionParam->setDeclName(PatternParam->getDeclName()); 230712c9c00024a01819e3a70ef6d951d32efaeb9312Douglas Gregor Scope.InstantiatedLocalPackArg(PatternParam, FunctionParam); 230812c9c00024a01819e3a70ef6d951d32efaeb9312Douglas Gregor } 23098a6c0f1a48b8167ca1457c9f05288fa637033dc9Peter Collingbourne } 231054dabfca850ca9e60e9ffb60003529f868d4d127Douglas Gregor 2311b9f1b8d877541e76390cd3807c2dcff2f950360aDouglas Gregor // Enter the scope of this instantiation. We don't use 2312b9f1b8d877541e76390cd3807c2dcff2f950360aDouglas Gregor // PushDeclContext because we don't have a scope. 2313eee1d5434ebfa955ffc3c493aecd68bb7b3f4838John McCall Sema::ContextRAII savedContext(*this, Function); 2314b9f1b8d877541e76390cd3807c2dcff2f950360aDouglas Gregor 23151eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump MultiLevelTemplateArgumentList TemplateArgs = 2316e7089b0c6ffe8a8854150b60df00fb544099f77dDouglas Gregor getTemplateInstantiationArgs(Function, 0, false, PatternDecl); 2317090253155017b7eec031bbd7bf07824a448e1d7aAnders Carlsson 2318090253155017b7eec031bbd7bf07824a448e1d7aAnders Carlsson // If this is a constructor, instantiate the member initializers. 23191eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (const CXXConstructorDecl *Ctor = 2320090253155017b7eec031bbd7bf07824a448e1d7aAnders Carlsson dyn_cast<CXXConstructorDecl>(PatternDecl)) { 2321090253155017b7eec031bbd7bf07824a448e1d7aAnders Carlsson InstantiateMemInitializers(cast<CXXConstructorDecl>(Function), Ctor, 2322090253155017b7eec031bbd7bf07824a448e1d7aAnders Carlsson TemplateArgs); 23231eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 23241eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 232554dabfca850ca9e60e9ffb60003529f868d4d127Douglas Gregor // Instantiate the function body. 232660d7b3a319d84d688752be3870615ac0f111fb16John McCall StmtResult Body = SubstStmt(Pattern, TemplateArgs); 2327e2c31ff0bc622e6fd7d47d7e08b53840f3be6c89Douglas Gregor 232852604ab71a74b8ec481255dfeea7dc9dba63b1a5Douglas Gregor if (Body.isInvalid()) 232952604ab71a74b8ec481255dfeea7dc9dba63b1a5Douglas Gregor Function->setInvalidDecl(); 233052604ab71a74b8ec481255dfeea7dc9dba63b1a5Douglas Gregor 23319ae2f076ca5ab1feb3ba95629099ec2319833701John McCall ActOnFinishFunctionBody(Function, Body.get(), 2332e2c31ff0bc622e6fd7d47d7e08b53840f3be6c89Douglas Gregor /*IsInstantiation=*/true); 2333b9f1b8d877541e76390cd3807c2dcff2f950360aDouglas Gregor 23340c01d18094100db92d38daa923c95661512db203John McCall PerformDependentDiagnostics(PatternDecl, TemplateArgs); 23350c01d18094100db92d38daa923c95661512db203John McCall 2336eee1d5434ebfa955ffc3c493aecd68bb7b3f4838John McCall savedContext.pop(); 2337aba43bb13b3aa3e81990989375fba3a902bfe1c2Douglas Gregor 2338aba43bb13b3aa3e81990989375fba3a902bfe1c2Douglas Gregor DeclGroupRef DG(Function); 2339aba43bb13b3aa3e81990989375fba3a902bfe1c2Douglas Gregor Consumer.HandleTopLevelDecl(DG); 23401eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 234160406bede202b66ebdd98cac0c38d20f9698aecaDouglas Gregor // This class may have local implicit instantiations that need to be 234260406bede202b66ebdd98cac0c38d20f9698aecaDouglas Gregor // instantiation within this scope. 234362c78d54bee499dd87f768f48b21c9b5ec15e516Chandler Carruth PerformPendingInstantiations(/*LocalOnly=*/true); 234460406bede202b66ebdd98cac0c38d20f9698aecaDouglas Gregor Scope.Exit(); 234560406bede202b66ebdd98cac0c38d20f9698aecaDouglas Gregor 2346b33fe2ff12676bff9db595fdf77e29014d7ba397Douglas Gregor if (Recursive) { 23472a5f99eb4e2af771faacfceb9f78e230129c5e5aNick Lewycky // Define any pending vtables. 23482a5f99eb4e2af771faacfceb9f78e230129c5e5aNick Lewycky DefineUsedVTables(); 23492a5f99eb4e2af771faacfceb9f78e230129c5e5aNick Lewycky 2350b33fe2ff12676bff9db595fdf77e29014d7ba397Douglas Gregor // Instantiate any pending implicit instantiations found during the 23511eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // instantiation of this template. 235262c78d54bee499dd87f768f48b21c9b5ec15e516Chandler Carruth PerformPendingInstantiations(); 23531eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 23542a5f99eb4e2af771faacfceb9f78e230129c5e5aNick Lewycky // Restore the set of pending vtables. 23552a5f99eb4e2af771faacfceb9f78e230129c5e5aNick Lewycky VTableUses.swap(SavedVTableUses); 23562a5f99eb4e2af771faacfceb9f78e230129c5e5aNick Lewycky 2357b33fe2ff12676bff9db595fdf77e29014d7ba397Douglas Gregor // Restore the set of pending implicit instantiations. 235862c78d54bee499dd87f768f48b21c9b5ec15e516Chandler Carruth PendingInstantiations.swap(SavedPendingInstantiations); 2359b33fe2ff12676bff9db595fdf77e29014d7ba397Douglas Gregor } 2360a58861f6490780baec50689e06ca65f7438b85dcDouglas Gregor} 2361a58861f6490780baec50689e06ca65f7438b85dcDouglas Gregor 2362a58861f6490780baec50689e06ca65f7438b85dcDouglas Gregor/// \brief Instantiate the definition of the given variable from its 2363a58861f6490780baec50689e06ca65f7438b85dcDouglas Gregor/// template. 2364a58861f6490780baec50689e06ca65f7438b85dcDouglas Gregor/// 23657caa6825f42a0f7e97d6fc06233133c42b218e46Douglas Gregor/// \param PointOfInstantiation the point at which the instantiation was 23667caa6825f42a0f7e97d6fc06233133c42b218e46Douglas Gregor/// required. Note that this is not precisely a "point of instantiation" 23677caa6825f42a0f7e97d6fc06233133c42b218e46Douglas Gregor/// for the function, but it's close. 23687caa6825f42a0f7e97d6fc06233133c42b218e46Douglas Gregor/// 23697caa6825f42a0f7e97d6fc06233133c42b218e46Douglas Gregor/// \param Var the already-instantiated declaration of a static member 23707caa6825f42a0f7e97d6fc06233133c42b218e46Douglas Gregor/// variable of a class template specialization. 23717caa6825f42a0f7e97d6fc06233133c42b218e46Douglas Gregor/// 23727caa6825f42a0f7e97d6fc06233133c42b218e46Douglas Gregor/// \param Recursive if true, recursively instantiates any functions that 23737caa6825f42a0f7e97d6fc06233133c42b218e46Douglas Gregor/// are required by this instantiation. 2374e2d3a3de71b2fa35614cb732a6da95a41fa38ad9Douglas Gregor/// 2375e2d3a3de71b2fa35614cb732a6da95a41fa38ad9Douglas Gregor/// \param DefinitionRequired if true, then we are performing an explicit 2376e2d3a3de71b2fa35614cb732a6da95a41fa38ad9Douglas Gregor/// instantiation where an out-of-line definition of the member variable 2377e2d3a3de71b2fa35614cb732a6da95a41fa38ad9Douglas Gregor/// is required. Complain if there is no such definition. 23787caa6825f42a0f7e97d6fc06233133c42b218e46Douglas Gregorvoid Sema::InstantiateStaticDataMemberDefinition( 23797caa6825f42a0f7e97d6fc06233133c42b218e46Douglas Gregor SourceLocation PointOfInstantiation, 23807caa6825f42a0f7e97d6fc06233133c42b218e46Douglas Gregor VarDecl *Var, 2381e2d3a3de71b2fa35614cb732a6da95a41fa38ad9Douglas Gregor bool Recursive, 2382e2d3a3de71b2fa35614cb732a6da95a41fa38ad9Douglas Gregor bool DefinitionRequired) { 23837caa6825f42a0f7e97d6fc06233133c42b218e46Douglas Gregor if (Var->isInvalidDecl()) 23847caa6825f42a0f7e97d6fc06233133c42b218e46Douglas Gregor return; 23851eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 23867caa6825f42a0f7e97d6fc06233133c42b218e46Douglas Gregor // Find the out-of-line definition of this static data member. 23877caa6825f42a0f7e97d6fc06233133c42b218e46Douglas Gregor VarDecl *Def = Var->getInstantiatedFromStaticDataMember(); 23887caa6825f42a0f7e97d6fc06233133c42b218e46Douglas Gregor assert(Def && "This data member was not instantiated from a template?"); 23890d03514da06dffb39a260a1228ea3fd01d196fa4Douglas Gregor assert(Def->isStaticDataMember() && "Not a static data member?"); 23900d03514da06dffb39a260a1228ea3fd01d196fa4Douglas Gregor Def = Def->getOutOfLineDefinition(); 23911eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 23920d03514da06dffb39a260a1228ea3fd01d196fa4Douglas Gregor if (!Def) { 23937caa6825f42a0f7e97d6fc06233133c42b218e46Douglas Gregor // We did not find an out-of-line definition of this static data member, 23947caa6825f42a0f7e97d6fc06233133c42b218e46Douglas Gregor // so we won't perform any instantiation. Rather, we rely on the user to 23951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // instantiate this definition (or provide a specialization for it) in 23961eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // another translation unit. 2397e2d3a3de71b2fa35614cb732a6da95a41fa38ad9Douglas Gregor if (DefinitionRequired) { 23980d03514da06dffb39a260a1228ea3fd01d196fa4Douglas Gregor Def = Var->getInstantiatedFromStaticDataMember(); 2399e2d3a3de71b2fa35614cb732a6da95a41fa38ad9Douglas Gregor Diag(PointOfInstantiation, 2400e2d3a3de71b2fa35614cb732a6da95a41fa38ad9Douglas Gregor diag::err_explicit_instantiation_undefined_member) 2401e2d3a3de71b2fa35614cb732a6da95a41fa38ad9Douglas Gregor << 2 << Var->getDeclName() << Var->getDeclContext(); 2402e2d3a3de71b2fa35614cb732a6da95a41fa38ad9Douglas Gregor Diag(Def->getLocation(), diag::note_explicit_instantiation_here); 240358e390ef491c8fb11ae17445054ee09527b492d3Chandler Carruth } else if (Var->getTemplateSpecializationKind() 240458e390ef491c8fb11ae17445054ee09527b492d3Chandler Carruth == TSK_ExplicitInstantiationDefinition) { 240562c78d54bee499dd87f768f48b21c9b5ec15e516Chandler Carruth PendingInstantiations.push_back( 240658e390ef491c8fb11ae17445054ee09527b492d3Chandler Carruth std::make_pair(Var, PointOfInstantiation)); 240758e390ef491c8fb11ae17445054ee09527b492d3Chandler Carruth } 240858e390ef491c8fb11ae17445054ee09527b492d3Chandler Carruth 24097caa6825f42a0f7e97d6fc06233133c42b218e46Douglas Gregor return; 24107caa6825f42a0f7e97d6fc06233133c42b218e46Douglas Gregor } 24117caa6825f42a0f7e97d6fc06233133c42b218e46Douglas Gregor 2412251b4ff2578e26959a4c036140ccd61c5e9292f2Douglas Gregor // Never instantiate an explicit specialization. 24131028c9f0afc1cc5f4951b39b7067fa57c1fea07bDouglas Gregor if (Var->getTemplateSpecializationKind() == TSK_ExplicitSpecialization) 2414251b4ff2578e26959a4c036140ccd61c5e9292f2Douglas Gregor return; 2415251b4ff2578e26959a4c036140ccd61c5e9292f2Douglas Gregor 2416251b4ff2578e26959a4c036140ccd61c5e9292f2Douglas Gregor // C++0x [temp.explicit]p9: 2417251b4ff2578e26959a4c036140ccd61c5e9292f2Douglas Gregor // Except for inline functions, other explicit instantiation declarations 2418251b4ff2578e26959a4c036140ccd61c5e9292f2Douglas Gregor // have the effect of suppressing the implicit instantiation of the entity 2419251b4ff2578e26959a4c036140ccd61c5e9292f2Douglas Gregor // to which they refer. 24201028c9f0afc1cc5f4951b39b7067fa57c1fea07bDouglas Gregor if (Var->getTemplateSpecializationKind() 2421251b4ff2578e26959a4c036140ccd61c5e9292f2Douglas Gregor == TSK_ExplicitInstantiationDeclaration) 2422251b4ff2578e26959a4c036140ccd61c5e9292f2Douglas Gregor return; 24231eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 24247caa6825f42a0f7e97d6fc06233133c42b218e46Douglas Gregor InstantiatingTemplate Inst(*this, PointOfInstantiation, Var); 24257caa6825f42a0f7e97d6fc06233133c42b218e46Douglas Gregor if (Inst) 24267caa6825f42a0f7e97d6fc06233133c42b218e46Douglas Gregor return; 24271eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 24287caa6825f42a0f7e97d6fc06233133c42b218e46Douglas Gregor // If we're performing recursive template instantiation, create our own 24297caa6825f42a0f7e97d6fc06233133c42b218e46Douglas Gregor // queue of pending implicit instantiations that we will instantiate later, 24307caa6825f42a0f7e97d6fc06233133c42b218e46Douglas Gregor // while we're still within our own instantiation context. 243162c78d54bee499dd87f768f48b21c9b5ec15e516Chandler Carruth std::deque<PendingImplicitInstantiation> SavedPendingInstantiations; 24327caa6825f42a0f7e97d6fc06233133c42b218e46Douglas Gregor if (Recursive) 243362c78d54bee499dd87f768f48b21c9b5ec15e516Chandler Carruth PendingInstantiations.swap(SavedPendingInstantiations); 24341eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 24357caa6825f42a0f7e97d6fc06233133c42b218e46Douglas Gregor // Enter the scope of this instantiation. We don't use 24367caa6825f42a0f7e97d6fc06233133c42b218e46Douglas Gregor // PushDeclContext because we don't have a scope. 2437f5ba7e089daadcd60b0f6e31d932be8bb6045281John McCall ContextRAII previousContext(*this, Var->getDeclContext()); 24381eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 24391028c9f0afc1cc5f4951b39b7067fa57c1fea07bDouglas Gregor VarDecl *OldVar = Var; 2440ce3ff2bd3a3386dbc209d3cba4b8769173b274c1John McCall Var = cast_or_null<VarDecl>(SubstDecl(Def, Var->getDeclContext(), 24416bb4dcb412d53d05a80017df81d41e447e2aa3eaNico Weber getTemplateInstantiationArgs(Var))); 2442f5ba7e089daadcd60b0f6e31d932be8bb6045281John McCall 2443f5ba7e089daadcd60b0f6e31d932be8bb6045281John McCall previousContext.pop(); 24447caa6825f42a0f7e97d6fc06233133c42b218e46Douglas Gregor 24457caa6825f42a0f7e97d6fc06233133c42b218e46Douglas Gregor if (Var) { 2446583f33b8a9227bace1a77a15404b4c64dc619d69Douglas Gregor MemberSpecializationInfo *MSInfo = OldVar->getMemberSpecializationInfo(); 2447583f33b8a9227bace1a77a15404b4c64dc619d69Douglas Gregor assert(MSInfo && "Missing member specialization information?"); 2448583f33b8a9227bace1a77a15404b4c64dc619d69Douglas Gregor Var->setTemplateSpecializationKind(MSInfo->getTemplateSpecializationKind(), 2449583f33b8a9227bace1a77a15404b4c64dc619d69Douglas Gregor MSInfo->getPointOfInstantiation()); 24507caa6825f42a0f7e97d6fc06233133c42b218e46Douglas Gregor DeclGroupRef DG(Var); 24517caa6825f42a0f7e97d6fc06233133c42b218e46Douglas Gregor Consumer.HandleTopLevelDecl(DG); 24527caa6825f42a0f7e97d6fc06233133c42b218e46Douglas Gregor } 24531eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 24547caa6825f42a0f7e97d6fc06233133c42b218e46Douglas Gregor if (Recursive) { 24557caa6825f42a0f7e97d6fc06233133c42b218e46Douglas Gregor // Instantiate any pending implicit instantiations found during the 24561eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // instantiation of this template. 245762c78d54bee499dd87f768f48b21c9b5ec15e516Chandler Carruth PerformPendingInstantiations(); 24581eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 24597caa6825f42a0f7e97d6fc06233133c42b218e46Douglas Gregor // Restore the set of pending implicit instantiations. 246062c78d54bee499dd87f768f48b21c9b5ec15e516Chandler Carruth PendingInstantiations.swap(SavedPendingInstantiations); 24611eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 2462a58861f6490780baec50689e06ca65f7438b85dcDouglas Gregor} 2463815215daf8f642b53a28212313fca7b9f77e5b9dDouglas Gregor 2464090253155017b7eec031bbd7bf07824a448e1d7aAnders Carlssonvoid 2465090253155017b7eec031bbd7bf07824a448e1d7aAnders CarlssonSema::InstantiateMemInitializers(CXXConstructorDecl *New, 2466090253155017b7eec031bbd7bf07824a448e1d7aAnders Carlsson const CXXConstructorDecl *Tmpl, 2467090253155017b7eec031bbd7bf07824a448e1d7aAnders Carlsson const MultiLevelTemplateArgumentList &TemplateArgs) { 24681eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2469090253155017b7eec031bbd7bf07824a448e1d7aAnders Carlsson llvm::SmallVector<MemInitTy*, 4> NewInits; 24709db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor bool AnyErrors = false; 24719db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor 2472090253155017b7eec031bbd7bf07824a448e1d7aAnders Carlsson // Instantiate all the initializers. 2473090253155017b7eec031bbd7bf07824a448e1d7aAnders Carlsson for (CXXConstructorDecl::init_const_iterator Inits = Tmpl->init_begin(), 247472f6d678c8de9f3a770e8ae5fc4979abf3940668Douglas Gregor InitsEnd = Tmpl->init_end(); 247572f6d678c8de9f3a770e8ae5fc4979abf3940668Douglas Gregor Inits != InitsEnd; ++Inits) { 2476cbb67480094b3bcb5b715acd827cbad55e2a204cSean Hunt CXXCtorInitializer *Init = *Inits; 2477090253155017b7eec031bbd7bf07824a448e1d7aAnders Carlsson 2478030ef472f31709e175895853fcb43d61d09022c7Chandler Carruth // Only instantiate written initializers, let Sema re-construct implicit 2479030ef472f31709e175895853fcb43d61d09022c7Chandler Carruth // ones. 2480030ef472f31709e175895853fcb43d61d09022c7Chandler Carruth if (!Init->isWritten()) 2481030ef472f31709e175895853fcb43d61d09022c7Chandler Carruth continue; 2482030ef472f31709e175895853fcb43d61d09022c7Chandler Carruth 24836b98b2e5f33ce2dcdb7fa385f7e21672d49f1a69Douglas Gregor SourceLocation LParenLoc, RParenLoc; 2484ca0408fb49c1370430672acf2d770b7151cf71deJohn McCall ASTOwningVector<Expr*> NewArgs(*this); 24851eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 24863fb9e4b89f72823f162096086f0f964e6dcf66d6Douglas Gregor SourceLocation EllipsisLoc; 24873fb9e4b89f72823f162096086f0f964e6dcf66d6Douglas Gregor 24883fb9e4b89f72823f162096086f0f964e6dcf66d6Douglas Gregor if (Init->isPackExpansion()) { 24893fb9e4b89f72823f162096086f0f964e6dcf66d6Douglas Gregor // This is a pack expansion. We should expand it now. 24903fb9e4b89f72823f162096086f0f964e6dcf66d6Douglas Gregor TypeLoc BaseTL = Init->getBaseClassInfo()->getTypeLoc(); 24913fb9e4b89f72823f162096086f0f964e6dcf66d6Douglas Gregor llvm::SmallVector<UnexpandedParameterPack, 2> Unexpanded; 24923fb9e4b89f72823f162096086f0f964e6dcf66d6Douglas Gregor collectUnexpandedParameterPacks(BaseTL, Unexpanded); 24933fb9e4b89f72823f162096086f0f964e6dcf66d6Douglas Gregor bool ShouldExpand = false; 2494d3731198193eee92796ddeb493973b7a598b003eDouglas Gregor bool RetainExpansion = false; 2495cded4f649cd4b7ba7d461c25c6482ef52b8d3a2aDouglas Gregor llvm::Optional<unsigned> NumExpansions; 24963fb9e4b89f72823f162096086f0f964e6dcf66d6Douglas Gregor if (CheckParameterPacksForExpansion(Init->getEllipsisLoc(), 24973fb9e4b89f72823f162096086f0f964e6dcf66d6Douglas Gregor BaseTL.getSourceRange(), 24983fb9e4b89f72823f162096086f0f964e6dcf66d6Douglas Gregor Unexpanded.data(), 24993fb9e4b89f72823f162096086f0f964e6dcf66d6Douglas Gregor Unexpanded.size(), 25003fb9e4b89f72823f162096086f0f964e6dcf66d6Douglas Gregor TemplateArgs, ShouldExpand, 2501d3731198193eee92796ddeb493973b7a598b003eDouglas Gregor RetainExpansion, 25023fb9e4b89f72823f162096086f0f964e6dcf66d6Douglas Gregor NumExpansions)) { 25033fb9e4b89f72823f162096086f0f964e6dcf66d6Douglas Gregor AnyErrors = true; 25043fb9e4b89f72823f162096086f0f964e6dcf66d6Douglas Gregor New->setInvalidDecl(); 25053fb9e4b89f72823f162096086f0f964e6dcf66d6Douglas Gregor continue; 25063fb9e4b89f72823f162096086f0f964e6dcf66d6Douglas Gregor } 25073fb9e4b89f72823f162096086f0f964e6dcf66d6Douglas Gregor assert(ShouldExpand && "Partial instantiation of base initializer?"); 25083fb9e4b89f72823f162096086f0f964e6dcf66d6Douglas Gregor 25093fb9e4b89f72823f162096086f0f964e6dcf66d6Douglas Gregor // Loop over all of the arguments in the argument pack(s), 2510cded4f649cd4b7ba7d461c25c6482ef52b8d3a2aDouglas Gregor for (unsigned I = 0; I != *NumExpansions; ++I) { 25113fb9e4b89f72823f162096086f0f964e6dcf66d6Douglas Gregor Sema::ArgumentPackSubstitutionIndexRAII SubstIndex(*this, I); 25123fb9e4b89f72823f162096086f0f964e6dcf66d6Douglas Gregor 25133fb9e4b89f72823f162096086f0f964e6dcf66d6Douglas Gregor // Instantiate the initializer. 25143fb9e4b89f72823f162096086f0f964e6dcf66d6Douglas Gregor if (InstantiateInitializer(*this, Init->getInit(), TemplateArgs, 25153fb9e4b89f72823f162096086f0f964e6dcf66d6Douglas Gregor LParenLoc, NewArgs, RParenLoc)) { 25163fb9e4b89f72823f162096086f0f964e6dcf66d6Douglas Gregor AnyErrors = true; 25173fb9e4b89f72823f162096086f0f964e6dcf66d6Douglas Gregor break; 25183fb9e4b89f72823f162096086f0f964e6dcf66d6Douglas Gregor } 25193fb9e4b89f72823f162096086f0f964e6dcf66d6Douglas Gregor 25203fb9e4b89f72823f162096086f0f964e6dcf66d6Douglas Gregor // Instantiate the base type. 25213fb9e4b89f72823f162096086f0f964e6dcf66d6Douglas Gregor TypeSourceInfo *BaseTInfo = SubstType(Init->getBaseClassInfo(), 25223fb9e4b89f72823f162096086f0f964e6dcf66d6Douglas Gregor TemplateArgs, 25233fb9e4b89f72823f162096086f0f964e6dcf66d6Douglas Gregor Init->getSourceLocation(), 25243fb9e4b89f72823f162096086f0f964e6dcf66d6Douglas Gregor New->getDeclName()); 25253fb9e4b89f72823f162096086f0f964e6dcf66d6Douglas Gregor if (!BaseTInfo) { 25263fb9e4b89f72823f162096086f0f964e6dcf66d6Douglas Gregor AnyErrors = true; 25273fb9e4b89f72823f162096086f0f964e6dcf66d6Douglas Gregor break; 25283fb9e4b89f72823f162096086f0f964e6dcf66d6Douglas Gregor } 25293fb9e4b89f72823f162096086f0f964e6dcf66d6Douglas Gregor 25303fb9e4b89f72823f162096086f0f964e6dcf66d6Douglas Gregor // Build the initializer. 25313fb9e4b89f72823f162096086f0f964e6dcf66d6Douglas Gregor MemInitResult NewInit = BuildBaseInitializer(BaseTInfo->getType(), 25323fb9e4b89f72823f162096086f0f964e6dcf66d6Douglas Gregor BaseTInfo, 25333fb9e4b89f72823f162096086f0f964e6dcf66d6Douglas Gregor (Expr **)NewArgs.data(), 25343fb9e4b89f72823f162096086f0f964e6dcf66d6Douglas Gregor NewArgs.size(), 25353fb9e4b89f72823f162096086f0f964e6dcf66d6Douglas Gregor Init->getLParenLoc(), 25363fb9e4b89f72823f162096086f0f964e6dcf66d6Douglas Gregor Init->getRParenLoc(), 25373fb9e4b89f72823f162096086f0f964e6dcf66d6Douglas Gregor New->getParent(), 25383fb9e4b89f72823f162096086f0f964e6dcf66d6Douglas Gregor SourceLocation()); 25393fb9e4b89f72823f162096086f0f964e6dcf66d6Douglas Gregor if (NewInit.isInvalid()) { 25403fb9e4b89f72823f162096086f0f964e6dcf66d6Douglas Gregor AnyErrors = true; 25413fb9e4b89f72823f162096086f0f964e6dcf66d6Douglas Gregor break; 25423fb9e4b89f72823f162096086f0f964e6dcf66d6Douglas Gregor } 25433fb9e4b89f72823f162096086f0f964e6dcf66d6Douglas Gregor 25443fb9e4b89f72823f162096086f0f964e6dcf66d6Douglas Gregor NewInits.push_back(NewInit.get()); 25453fb9e4b89f72823f162096086f0f964e6dcf66d6Douglas Gregor NewArgs.clear(); 25463fb9e4b89f72823f162096086f0f964e6dcf66d6Douglas Gregor } 25473fb9e4b89f72823f162096086f0f964e6dcf66d6Douglas Gregor 25483fb9e4b89f72823f162096086f0f964e6dcf66d6Douglas Gregor continue; 25493fb9e4b89f72823f162096086f0f964e6dcf66d6Douglas Gregor } 25503fb9e4b89f72823f162096086f0f964e6dcf66d6Douglas Gregor 25516b98b2e5f33ce2dcdb7fa385f7e21672d49f1a69Douglas Gregor // Instantiate the initializer. 25526b98b2e5f33ce2dcdb7fa385f7e21672d49f1a69Douglas Gregor if (InstantiateInitializer(*this, Init->getInit(), TemplateArgs, 2553a1a04786cea2445759026edacd096abd1fbf4a05Douglas Gregor LParenLoc, NewArgs, RParenLoc)) { 25546b98b2e5f33ce2dcdb7fa385f7e21672d49f1a69Douglas Gregor AnyErrors = true; 25556b98b2e5f33ce2dcdb7fa385f7e21672d49f1a69Douglas Gregor continue; 2556090253155017b7eec031bbd7bf07824a448e1d7aAnders Carlsson } 25579db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor 2558090253155017b7eec031bbd7bf07824a448e1d7aAnders Carlsson MemInitResult NewInit; 2559090253155017b7eec031bbd7bf07824a448e1d7aAnders Carlsson if (Init->isBaseInitializer()) { 2560a93c934af4fbf97cbe8e649d82e68ccacfe57c95John McCall TypeSourceInfo *BaseTInfo = SubstType(Init->getBaseClassInfo(), 2561802ab45fea51beff12f386329d4928811a479c6eDouglas Gregor TemplateArgs, 2562802ab45fea51beff12f386329d4928811a479c6eDouglas Gregor Init->getSourceLocation(), 2563802ab45fea51beff12f386329d4928811a479c6eDouglas Gregor New->getDeclName()); 2564a93c934af4fbf97cbe8e649d82e68ccacfe57c95John McCall if (!BaseTInfo) { 25659db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor AnyErrors = true; 2566802ab45fea51beff12f386329d4928811a479c6eDouglas Gregor New->setInvalidDecl(); 2567802ab45fea51beff12f386329d4928811a479c6eDouglas Gregor continue; 2568802ab45fea51beff12f386329d4928811a479c6eDouglas Gregor } 2569802ab45fea51beff12f386329d4928811a479c6eDouglas Gregor 2570a93c934af4fbf97cbe8e649d82e68ccacfe57c95John McCall NewInit = BuildBaseInitializer(BaseTInfo->getType(), BaseTInfo, 25711eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump (Expr **)NewArgs.data(), 2572090253155017b7eec031bbd7bf07824a448e1d7aAnders Carlsson NewArgs.size(), 2573802ab45fea51beff12f386329d4928811a479c6eDouglas Gregor Init->getLParenLoc(), 2574090253155017b7eec031bbd7bf07824a448e1d7aAnders Carlsson Init->getRParenLoc(), 25753fb9e4b89f72823f162096086f0f964e6dcf66d6Douglas Gregor New->getParent(), 25763fb9e4b89f72823f162096086f0f964e6dcf66d6Douglas Gregor EllipsisLoc); 2577090253155017b7eec031bbd7bf07824a448e1d7aAnders Carlsson } else if (Init->isMemberInitializer()) { 257800eb3f9c5b33e3d99aee1f8b75dd9c9678fdd66bFrancois Pichet FieldDecl *Member = cast<FieldDecl>(FindInstantiatedDecl( 257900eb3f9c5b33e3d99aee1f8b75dd9c9678fdd66bFrancois Pichet Init->getMemberLocation(), 258000eb3f9c5b33e3d99aee1f8b75dd9c9678fdd66bFrancois Pichet Init->getMember(), 258100eb3f9c5b33e3d99aee1f8b75dd9c9678fdd66bFrancois Pichet TemplateArgs)); 25821eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 25831eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump NewInit = BuildMemberInitializer(Member, (Expr **)NewArgs.data(), 2584090253155017b7eec031bbd7bf07824a448e1d7aAnders Carlsson NewArgs.size(), 2585090253155017b7eec031bbd7bf07824a448e1d7aAnders Carlsson Init->getSourceLocation(), 2586802ab45fea51beff12f386329d4928811a479c6eDouglas Gregor Init->getLParenLoc(), 2587090253155017b7eec031bbd7bf07824a448e1d7aAnders Carlsson Init->getRParenLoc()); 258800eb3f9c5b33e3d99aee1f8b75dd9c9678fdd66bFrancois Pichet } else if (Init->isIndirectMemberInitializer()) { 258900eb3f9c5b33e3d99aee1f8b75dd9c9678fdd66bFrancois Pichet IndirectFieldDecl *IndirectMember = 259000eb3f9c5b33e3d99aee1f8b75dd9c9678fdd66bFrancois Pichet cast<IndirectFieldDecl>(FindInstantiatedDecl( 259100eb3f9c5b33e3d99aee1f8b75dd9c9678fdd66bFrancois Pichet Init->getMemberLocation(), 259200eb3f9c5b33e3d99aee1f8b75dd9c9678fdd66bFrancois Pichet Init->getIndirectMember(), TemplateArgs)); 259300eb3f9c5b33e3d99aee1f8b75dd9c9678fdd66bFrancois Pichet 259400eb3f9c5b33e3d99aee1f8b75dd9c9678fdd66bFrancois Pichet NewInit = BuildMemberInitializer(IndirectMember, (Expr **)NewArgs.data(), 259500eb3f9c5b33e3d99aee1f8b75dd9c9678fdd66bFrancois Pichet NewArgs.size(), 259600eb3f9c5b33e3d99aee1f8b75dd9c9678fdd66bFrancois Pichet Init->getSourceLocation(), 259700eb3f9c5b33e3d99aee1f8b75dd9c9678fdd66bFrancois Pichet Init->getLParenLoc(), 259800eb3f9c5b33e3d99aee1f8b75dd9c9678fdd66bFrancois Pichet Init->getRParenLoc()); 2599090253155017b7eec031bbd7bf07824a448e1d7aAnders Carlsson } 2600090253155017b7eec031bbd7bf07824a448e1d7aAnders Carlsson 26019db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor if (NewInit.isInvalid()) { 26029db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor AnyErrors = true; 2603090253155017b7eec031bbd7bf07824a448e1d7aAnders Carlsson New->setInvalidDecl(); 26049db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor } else { 2605090253155017b7eec031bbd7bf07824a448e1d7aAnders Carlsson // FIXME: It would be nice if ASTOwningVector had a release function. 2606090253155017b7eec031bbd7bf07824a448e1d7aAnders Carlsson NewArgs.take(); 26071eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2608090253155017b7eec031bbd7bf07824a448e1d7aAnders Carlsson NewInits.push_back((MemInitTy *)NewInit.get()); 2609090253155017b7eec031bbd7bf07824a448e1d7aAnders Carlsson } 2610090253155017b7eec031bbd7bf07824a448e1d7aAnders Carlsson } 26111eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2612090253155017b7eec031bbd7bf07824a448e1d7aAnders Carlsson // Assign all the initializers to the new constructor. 2613d226f65006733ed7f709c3174f22ce33391cb58fJohn McCall ActOnMemInitializers(New, 2614090253155017b7eec031bbd7bf07824a448e1d7aAnders Carlsson /*FIXME: ColonLoc */ 2615090253155017b7eec031bbd7bf07824a448e1d7aAnders Carlsson SourceLocation(), 26169db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor NewInits.data(), NewInits.size(), 26179db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor AnyErrors); 2618090253155017b7eec031bbd7bf07824a448e1d7aAnders Carlsson} 2619090253155017b7eec031bbd7bf07824a448e1d7aAnders Carlsson 262052a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCall// TODO: this could be templated if the various decl types used the 262152a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCall// same method name. 262252a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCallstatic bool isInstantiationOf(ClassTemplateDecl *Pattern, 262352a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCall ClassTemplateDecl *Instance) { 262452a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCall Pattern = Pattern->getCanonicalDecl(); 262552a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCall 262652a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCall do { 262752a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCall Instance = Instance->getCanonicalDecl(); 262852a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCall if (Pattern == Instance) return true; 262952a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCall Instance = Instance->getInstantiatedFromMemberTemplate(); 263052a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCall } while (Instance); 263152a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCall 263252a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCall return false; 263352a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCall} 263452a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCall 26350d696533420fca4cf32694621e3edf582ad4d06eDouglas Gregorstatic bool isInstantiationOf(FunctionTemplateDecl *Pattern, 26360d696533420fca4cf32694621e3edf582ad4d06eDouglas Gregor FunctionTemplateDecl *Instance) { 26370d696533420fca4cf32694621e3edf582ad4d06eDouglas Gregor Pattern = Pattern->getCanonicalDecl(); 26380d696533420fca4cf32694621e3edf582ad4d06eDouglas Gregor 26390d696533420fca4cf32694621e3edf582ad4d06eDouglas Gregor do { 26400d696533420fca4cf32694621e3edf582ad4d06eDouglas Gregor Instance = Instance->getCanonicalDecl(); 26410d696533420fca4cf32694621e3edf582ad4d06eDouglas Gregor if (Pattern == Instance) return true; 26420d696533420fca4cf32694621e3edf582ad4d06eDouglas Gregor Instance = Instance->getInstantiatedFromMemberTemplate(); 26430d696533420fca4cf32694621e3edf582ad4d06eDouglas Gregor } while (Instance); 26440d696533420fca4cf32694621e3edf582ad4d06eDouglas Gregor 26450d696533420fca4cf32694621e3edf582ad4d06eDouglas Gregor return false; 26460d696533420fca4cf32694621e3edf582ad4d06eDouglas Gregor} 26470d696533420fca4cf32694621e3edf582ad4d06eDouglas Gregor 2648ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregorstatic bool 2649ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas GregorisInstantiationOf(ClassTemplatePartialSpecializationDecl *Pattern, 2650ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor ClassTemplatePartialSpecializationDecl *Instance) { 2651ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor Pattern 2652ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor = cast<ClassTemplatePartialSpecializationDecl>(Pattern->getCanonicalDecl()); 2653ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor do { 2654ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor Instance = cast<ClassTemplatePartialSpecializationDecl>( 2655ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor Instance->getCanonicalDecl()); 2656ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor if (Pattern == Instance) 2657ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor return true; 2658ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor Instance = Instance->getInstantiatedFromMember(); 2659ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor } while (Instance); 2660ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor 2661ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor return false; 2662ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor} 2663ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor 266452a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCallstatic bool isInstantiationOf(CXXRecordDecl *Pattern, 266552a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCall CXXRecordDecl *Instance) { 266652a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCall Pattern = Pattern->getCanonicalDecl(); 266752a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCall 266852a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCall do { 266952a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCall Instance = Instance->getCanonicalDecl(); 267052a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCall if (Pattern == Instance) return true; 267152a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCall Instance = Instance->getInstantiatedFromMemberClass(); 267252a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCall } while (Instance); 267352a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCall 267452a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCall return false; 267552a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCall} 267652a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCall 267752a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCallstatic bool isInstantiationOf(FunctionDecl *Pattern, 267852a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCall FunctionDecl *Instance) { 267952a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCall Pattern = Pattern->getCanonicalDecl(); 268052a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCall 268152a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCall do { 268252a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCall Instance = Instance->getCanonicalDecl(); 268352a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCall if (Pattern == Instance) return true; 268452a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCall Instance = Instance->getInstantiatedFromMemberFunction(); 268552a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCall } while (Instance); 268652a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCall 268752a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCall return false; 268852a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCall} 268952a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCall 269052a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCallstatic bool isInstantiationOf(EnumDecl *Pattern, 269152a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCall EnumDecl *Instance) { 269252a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCall Pattern = Pattern->getCanonicalDecl(); 269352a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCall 269452a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCall do { 269552a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCall Instance = Instance->getCanonicalDecl(); 269652a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCall if (Pattern == Instance) return true; 269752a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCall Instance = Instance->getInstantiatedFromMemberEnum(); 269852a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCall } while (Instance); 269952a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCall 270052a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCall return false; 270152a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCall} 270252a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCall 2703ed97649e9574b9d854fa4d6109c9333ae0993554John McCallstatic bool isInstantiationOf(UsingShadowDecl *Pattern, 2704ed97649e9574b9d854fa4d6109c9333ae0993554John McCall UsingShadowDecl *Instance, 2705ed97649e9574b9d854fa4d6109c9333ae0993554John McCall ASTContext &C) { 2706ed97649e9574b9d854fa4d6109c9333ae0993554John McCall return C.getInstantiatedFromUsingShadowDecl(Instance) == Pattern; 2707ed97649e9574b9d854fa4d6109c9333ae0993554John McCall} 2708ed97649e9574b9d854fa4d6109c9333ae0993554John McCall 2709ed97649e9574b9d854fa4d6109c9333ae0993554John McCallstatic bool isInstantiationOf(UsingDecl *Pattern, 2710ed97649e9574b9d854fa4d6109c9333ae0993554John McCall UsingDecl *Instance, 2711ed97649e9574b9d854fa4d6109c9333ae0993554John McCall ASTContext &C) { 2712ed97649e9574b9d854fa4d6109c9333ae0993554John McCall return C.getInstantiatedFromUsingDecl(Instance) == Pattern; 2713ed97649e9574b9d854fa4d6109c9333ae0993554John McCall} 2714ed97649e9574b9d854fa4d6109c9333ae0993554John McCall 27157ba107a1863ddfa1664555854f0d7bdb3c491c92John McCallstatic bool isInstantiationOf(UnresolvedUsingValueDecl *Pattern, 27167ba107a1863ddfa1664555854f0d7bdb3c491c92John McCall UsingDecl *Instance, 27177ba107a1863ddfa1664555854f0d7bdb3c491c92John McCall ASTContext &C) { 2718ed97649e9574b9d854fa4d6109c9333ae0993554John McCall return C.getInstantiatedFromUsingDecl(Instance) == Pattern; 27197ba107a1863ddfa1664555854f0d7bdb3c491c92John McCall} 27207ba107a1863ddfa1664555854f0d7bdb3c491c92John McCall 27217ba107a1863ddfa1664555854f0d7bdb3c491c92John McCallstatic bool isInstantiationOf(UnresolvedUsingTypenameDecl *Pattern, 27220d8df780aef1acda5962347a32591efc629b6748Anders Carlsson UsingDecl *Instance, 27230d8df780aef1acda5962347a32591efc629b6748Anders Carlsson ASTContext &C) { 2724ed97649e9574b9d854fa4d6109c9333ae0993554John McCall return C.getInstantiatedFromUsingDecl(Instance) == Pattern; 27250d8df780aef1acda5962347a32591efc629b6748Anders Carlsson} 27260d8df780aef1acda5962347a32591efc629b6748Anders Carlsson 272752a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCallstatic bool isInstantiationOfStaticDataMember(VarDecl *Pattern, 272852a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCall VarDecl *Instance) { 272952a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCall assert(Instance->isStaticDataMember()); 273052a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCall 273152a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCall Pattern = Pattern->getCanonicalDecl(); 273252a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCall 273352a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCall do { 273452a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCall Instance = Instance->getCanonicalDecl(); 273552a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCall if (Pattern == Instance) return true; 273652a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCall Instance = Instance->getInstantiatedFromStaticDataMember(); 273752a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCall } while (Instance); 273852a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCall 273952a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCall return false; 274052a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCall} 274152a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCall 2742ed97649e9574b9d854fa4d6109c9333ae0993554John McCall// Other is the prospective instantiation 2743ed97649e9574b9d854fa4d6109c9333ae0993554John McCall// D is the prospective pattern 2744815215daf8f642b53a28212313fca7b9f77e5b9dDouglas Gregorstatic bool isInstantiationOf(ASTContext &Ctx, NamedDecl *D, Decl *Other) { 27450d8df780aef1acda5962347a32591efc629b6748Anders Carlsson if (D->getKind() != Other->getKind()) { 27467ba107a1863ddfa1664555854f0d7bdb3c491c92John McCall if (UnresolvedUsingTypenameDecl *UUD 27477ba107a1863ddfa1664555854f0d7bdb3c491c92John McCall = dyn_cast<UnresolvedUsingTypenameDecl>(D)) { 27487ba107a1863ddfa1664555854f0d7bdb3c491c92John McCall if (UsingDecl *UD = dyn_cast<UsingDecl>(Other)) { 27497ba107a1863ddfa1664555854f0d7bdb3c491c92John McCall return isInstantiationOf(UUD, UD, Ctx); 27507ba107a1863ddfa1664555854f0d7bdb3c491c92John McCall } 27517ba107a1863ddfa1664555854f0d7bdb3c491c92John McCall } 27527ba107a1863ddfa1664555854f0d7bdb3c491c92John McCall 27537ba107a1863ddfa1664555854f0d7bdb3c491c92John McCall if (UnresolvedUsingValueDecl *UUD 27547ba107a1863ddfa1664555854f0d7bdb3c491c92John McCall = dyn_cast<UnresolvedUsingValueDecl>(D)) { 27550d8df780aef1acda5962347a32591efc629b6748Anders Carlsson if (UsingDecl *UD = dyn_cast<UsingDecl>(Other)) { 27560d8df780aef1acda5962347a32591efc629b6748Anders Carlsson return isInstantiationOf(UUD, UD, Ctx); 27570d8df780aef1acda5962347a32591efc629b6748Anders Carlsson } 27580d8df780aef1acda5962347a32591efc629b6748Anders Carlsson } 2759815215daf8f642b53a28212313fca7b9f77e5b9dDouglas Gregor 27600d8df780aef1acda5962347a32591efc629b6748Anders Carlsson return false; 27610d8df780aef1acda5962347a32591efc629b6748Anders Carlsson } 27621eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 276352a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCall if (CXXRecordDecl *Record = dyn_cast<CXXRecordDecl>(Other)) 276452a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCall return isInstantiationOf(cast<CXXRecordDecl>(D), Record); 27651eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 276652a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCall if (FunctionDecl *Function = dyn_cast<FunctionDecl>(Other)) 276752a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCall return isInstantiationOf(cast<FunctionDecl>(D), Function); 2768815215daf8f642b53a28212313fca7b9f77e5b9dDouglas Gregor 276952a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCall if (EnumDecl *Enum = dyn_cast<EnumDecl>(Other)) 277052a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCall return isInstantiationOf(cast<EnumDecl>(D), Enum); 2771815215daf8f642b53a28212313fca7b9f77e5b9dDouglas Gregor 27727caa6825f42a0f7e97d6fc06233133c42b218e46Douglas Gregor if (VarDecl *Var = dyn_cast<VarDecl>(Other)) 277352a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCall if (Var->isStaticDataMember()) 277452a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCall return isInstantiationOfStaticDataMember(cast<VarDecl>(D), Var); 277552a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCall 277652a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCall if (ClassTemplateDecl *Temp = dyn_cast<ClassTemplateDecl>(Other)) 277752a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCall return isInstantiationOf(cast<ClassTemplateDecl>(D), Temp); 2778a5bf7f13d7772b164750997f95ab18487bbc4114Douglas Gregor 27790d696533420fca4cf32694621e3edf582ad4d06eDouglas Gregor if (FunctionTemplateDecl *Temp = dyn_cast<FunctionTemplateDecl>(Other)) 27800d696533420fca4cf32694621e3edf582ad4d06eDouglas Gregor return isInstantiationOf(cast<FunctionTemplateDecl>(D), Temp); 27810d696533420fca4cf32694621e3edf582ad4d06eDouglas Gregor 2782ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor if (ClassTemplatePartialSpecializationDecl *PartialSpec 2783ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor = dyn_cast<ClassTemplatePartialSpecializationDecl>(Other)) 2784ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor return isInstantiationOf(cast<ClassTemplatePartialSpecializationDecl>(D), 2785ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor PartialSpec); 2786ed9c0f90b7e0811c209b95e39fe07c211c531285Douglas Gregor 2787d8b285fee4471f393da8ee30f552ceacdc362afaAnders Carlsson if (FieldDecl *Field = dyn_cast<FieldDecl>(Other)) { 2788d8b285fee4471f393da8ee30f552ceacdc362afaAnders Carlsson if (!Field->getDeclName()) { 2789d8b285fee4471f393da8ee30f552ceacdc362afaAnders Carlsson // This is an unnamed field. 27901eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return Ctx.getInstantiatedFromUnnamedFieldDecl(Field) == 2791d8b285fee4471f393da8ee30f552ceacdc362afaAnders Carlsson cast<FieldDecl>(D); 2792d8b285fee4471f393da8ee30f552ceacdc362afaAnders Carlsson } 2793d8b285fee4471f393da8ee30f552ceacdc362afaAnders Carlsson } 27941eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2795ed97649e9574b9d854fa4d6109c9333ae0993554John McCall if (UsingDecl *Using = dyn_cast<UsingDecl>(Other)) 2796ed97649e9574b9d854fa4d6109c9333ae0993554John McCall return isInstantiationOf(cast<UsingDecl>(D), Using, Ctx); 2797ed97649e9574b9d854fa4d6109c9333ae0993554John McCall 2798ed97649e9574b9d854fa4d6109c9333ae0993554John McCall if (UsingShadowDecl *Shadow = dyn_cast<UsingShadowDecl>(Other)) 2799ed97649e9574b9d854fa4d6109c9333ae0993554John McCall return isInstantiationOf(cast<UsingShadowDecl>(D), Shadow, Ctx); 2800ed97649e9574b9d854fa4d6109c9333ae0993554John McCall 2801815215daf8f642b53a28212313fca7b9f77e5b9dDouglas Gregor return D->getDeclName() && isa<NamedDecl>(Other) && 2802815215daf8f642b53a28212313fca7b9f77e5b9dDouglas Gregor D->getDeclName() == cast<NamedDecl>(Other)->getDeclName(); 2803815215daf8f642b53a28212313fca7b9f77e5b9dDouglas Gregor} 2804815215daf8f642b53a28212313fca7b9f77e5b9dDouglas Gregor 2805815215daf8f642b53a28212313fca7b9f77e5b9dDouglas Gregortemplate<typename ForwardIterator> 28061eb4433ac451dc16f4133a88af2d002ac26c58efMike Stumpstatic NamedDecl *findInstantiationOf(ASTContext &Ctx, 2807815215daf8f642b53a28212313fca7b9f77e5b9dDouglas Gregor NamedDecl *D, 2808815215daf8f642b53a28212313fca7b9f77e5b9dDouglas Gregor ForwardIterator first, 2809815215daf8f642b53a28212313fca7b9f77e5b9dDouglas Gregor ForwardIterator last) { 2810815215daf8f642b53a28212313fca7b9f77e5b9dDouglas Gregor for (; first != last; ++first) 2811815215daf8f642b53a28212313fca7b9f77e5b9dDouglas Gregor if (isInstantiationOf(Ctx, D, *first)) 2812815215daf8f642b53a28212313fca7b9f77e5b9dDouglas Gregor return cast<NamedDecl>(*first); 2813815215daf8f642b53a28212313fca7b9f77e5b9dDouglas Gregor 2814815215daf8f642b53a28212313fca7b9f77e5b9dDouglas Gregor return 0; 2815815215daf8f642b53a28212313fca7b9f77e5b9dDouglas Gregor} 2816815215daf8f642b53a28212313fca7b9f77e5b9dDouglas Gregor 281702cace78cf48cc26686bd5b07c78606abca13bcdJohn McCall/// \brief Finds the instantiation of the given declaration context 281802cace78cf48cc26686bd5b07c78606abca13bcdJohn McCall/// within the current instantiation. 281902cace78cf48cc26686bd5b07c78606abca13bcdJohn McCall/// 282002cace78cf48cc26686bd5b07c78606abca13bcdJohn McCall/// \returns NULL if there was an error 28217c1e98f1cb37b40e619a0c8aee8b337f037b432bDouglas GregorDeclContext *Sema::FindInstantiatedContext(SourceLocation Loc, DeclContext* DC, 2822e95b40961302c2130968ddfc3ba162e138f2118eDouglas Gregor const MultiLevelTemplateArgumentList &TemplateArgs) { 282302cace78cf48cc26686bd5b07c78606abca13bcdJohn McCall if (NamedDecl *D = dyn_cast<NamedDecl>(DC)) { 28247c1e98f1cb37b40e619a0c8aee8b337f037b432bDouglas Gregor Decl* ID = FindInstantiatedDecl(Loc, D, TemplateArgs); 282502cace78cf48cc26686bd5b07c78606abca13bcdJohn McCall return cast_or_null<DeclContext>(ID); 282602cace78cf48cc26686bd5b07c78606abca13bcdJohn McCall } else return DC; 282702cace78cf48cc26686bd5b07c78606abca13bcdJohn McCall} 282802cace78cf48cc26686bd5b07c78606abca13bcdJohn McCall 2829ed961e7fffc268eeace169869f5a059bcbd5fcbdDouglas Gregor/// \brief Find the instantiation of the given declaration within the 2830ed961e7fffc268eeace169869f5a059bcbd5fcbdDouglas Gregor/// current instantiation. 2831815215daf8f642b53a28212313fca7b9f77e5b9dDouglas Gregor/// 2832815215daf8f642b53a28212313fca7b9f77e5b9dDouglas Gregor/// This routine is intended to be used when \p D is a declaration 2833815215daf8f642b53a28212313fca7b9f77e5b9dDouglas Gregor/// referenced from within a template, that needs to mapped into the 2834815215daf8f642b53a28212313fca7b9f77e5b9dDouglas Gregor/// corresponding declaration within an instantiation. For example, 2835815215daf8f642b53a28212313fca7b9f77e5b9dDouglas Gregor/// given: 2836815215daf8f642b53a28212313fca7b9f77e5b9dDouglas Gregor/// 2837815215daf8f642b53a28212313fca7b9f77e5b9dDouglas Gregor/// \code 2838815215daf8f642b53a28212313fca7b9f77e5b9dDouglas Gregor/// template<typename T> 2839815215daf8f642b53a28212313fca7b9f77e5b9dDouglas Gregor/// struct X { 2840815215daf8f642b53a28212313fca7b9f77e5b9dDouglas Gregor/// enum Kind { 2841815215daf8f642b53a28212313fca7b9f77e5b9dDouglas Gregor/// KnownValue = sizeof(T) 2842815215daf8f642b53a28212313fca7b9f77e5b9dDouglas Gregor/// }; 2843815215daf8f642b53a28212313fca7b9f77e5b9dDouglas Gregor/// 2844815215daf8f642b53a28212313fca7b9f77e5b9dDouglas Gregor/// bool getKind() const { return KnownValue; } 2845815215daf8f642b53a28212313fca7b9f77e5b9dDouglas Gregor/// }; 2846815215daf8f642b53a28212313fca7b9f77e5b9dDouglas Gregor/// 2847815215daf8f642b53a28212313fca7b9f77e5b9dDouglas Gregor/// template struct X<int>; 2848815215daf8f642b53a28212313fca7b9f77e5b9dDouglas Gregor/// \endcode 2849815215daf8f642b53a28212313fca7b9f77e5b9dDouglas Gregor/// 2850815215daf8f642b53a28212313fca7b9f77e5b9dDouglas Gregor/// In the instantiation of X<int>::getKind(), we need to map the 2851815215daf8f642b53a28212313fca7b9f77e5b9dDouglas Gregor/// EnumConstantDecl for KnownValue (which refers to 2852815215daf8f642b53a28212313fca7b9f77e5b9dDouglas Gregor/// X<T>::<Kind>::KnownValue) to its instantiation 2853ed961e7fffc268eeace169869f5a059bcbd5fcbdDouglas Gregor/// (X<int>::<Kind>::KnownValue). InstantiateCurrentDeclRef() performs 2854ed961e7fffc268eeace169869f5a059bcbd5fcbdDouglas Gregor/// this mapping from within the instantiation of X<int>. 28557c1e98f1cb37b40e619a0c8aee8b337f037b432bDouglas GregorNamedDecl *Sema::FindInstantiatedDecl(SourceLocation Loc, NamedDecl *D, 2856e95b40961302c2130968ddfc3ba162e138f2118eDouglas Gregor const MultiLevelTemplateArgumentList &TemplateArgs) { 2857815215daf8f642b53a28212313fca7b9f77e5b9dDouglas Gregor DeclContext *ParentDC = D->getDeclContext(); 2858550d9b28fd586db541eb6dd36f3c10d114e483d8Douglas Gregor if (isa<ParmVarDecl>(D) || isa<NonTypeTemplateParmDecl>(D) || 28596d3e627dacdb2f749195635ab587fd067ef813e1Douglas Gregor isa<TemplateTypeParmDecl>(D) || isa<TemplateTemplateParmDecl>(D) || 2860766724566289e6951a90b6483f0d3e22fe4b9b52John McCall (ParentDC->isFunctionOrMethod() && ParentDC->isDependentContext())) { 28612bba76b0ec4c2f2134eebb1a2bbfe102f36c2f6eDouglas Gregor // D is a local of some kind. Look into the map of local 28622bba76b0ec4c2f2134eebb1a2bbfe102f36c2f6eDouglas Gregor // declarations to their instantiations. 2863d8e54990ade0dd5566f8e3aa2e62def08753d1e9Chris Lattner typedef LocalInstantiationScope::DeclArgumentPack DeclArgumentPack; 2864d8e54990ade0dd5566f8e3aa2e62def08753d1e9Chris Lattner llvm::PointerUnion<Decl *, DeclArgumentPack *> *Found 2865d8e54990ade0dd5566f8e3aa2e62def08753d1e9Chris Lattner = CurrentInstantiationScope->findInstantiationOf(D); 2866d8e54990ade0dd5566f8e3aa2e62def08753d1e9Chris Lattner assert(Found); 2867d8e54990ade0dd5566f8e3aa2e62def08753d1e9Chris Lattner 2868d8e54990ade0dd5566f8e3aa2e62def08753d1e9Chris Lattner if (Decl *FD = Found->dyn_cast<Decl *>()) 2869d8e54990ade0dd5566f8e3aa2e62def08753d1e9Chris Lattner return cast<NamedDecl>(FD); 2870d8e54990ade0dd5566f8e3aa2e62def08753d1e9Chris Lattner 2871d8e54990ade0dd5566f8e3aa2e62def08753d1e9Chris Lattner unsigned PackIdx = ArgumentPackSubstitutionIndex; 2872d8e54990ade0dd5566f8e3aa2e62def08753d1e9Chris Lattner return cast<NamedDecl>((*Found->get<DeclArgumentPack *>())[PackIdx]); 28732bba76b0ec4c2f2134eebb1a2bbfe102f36c2f6eDouglas Gregor } 2874815215daf8f642b53a28212313fca7b9f77e5b9dDouglas Gregor 2875e95b40961302c2130968ddfc3ba162e138f2118eDouglas Gregor if (CXXRecordDecl *Record = dyn_cast<CXXRecordDecl>(D)) { 2876e95b40961302c2130968ddfc3ba162e138f2118eDouglas Gregor if (!Record->isDependentContext()) 2877e95b40961302c2130968ddfc3ba162e138f2118eDouglas Gregor return D; 2878e95b40961302c2130968ddfc3ba162e138f2118eDouglas Gregor 28798b013bdbf6474ed25d4017635cac851e51163c25Douglas Gregor // If the RecordDecl is actually the injected-class-name or a 28808b013bdbf6474ed25d4017635cac851e51163c25Douglas Gregor // "templated" declaration for a class template, class template 28818b013bdbf6474ed25d4017635cac851e51163c25Douglas Gregor // partial specialization, or a member class of a class template, 28828b013bdbf6474ed25d4017635cac851e51163c25Douglas Gregor // substitute into the injected-class-name of the class template 28838b013bdbf6474ed25d4017635cac851e51163c25Douglas Gregor // or partial specialization to find the new DeclContext. 2884e95b40961302c2130968ddfc3ba162e138f2118eDouglas Gregor QualType T; 2885e95b40961302c2130968ddfc3ba162e138f2118eDouglas Gregor ClassTemplateDecl *ClassTemplate = Record->getDescribedClassTemplate(); 2886e95b40961302c2130968ddfc3ba162e138f2118eDouglas Gregor 2887e95b40961302c2130968ddfc3ba162e138f2118eDouglas Gregor if (ClassTemplate) { 288824bae92f08ae098cc50a602d8cf1273b423e14daDouglas Gregor T = ClassTemplate->getInjectedClassNameSpecialization(); 2889e95b40961302c2130968ddfc3ba162e138f2118eDouglas Gregor } else if (ClassTemplatePartialSpecializationDecl *PartialSpec 2890e95b40961302c2130968ddfc3ba162e138f2118eDouglas Gregor = dyn_cast<ClassTemplatePartialSpecializationDecl>(Record)) { 2891e95b40961302c2130968ddfc3ba162e138f2118eDouglas Gregor ClassTemplate = PartialSpec->getSpecializedTemplate(); 28923cb0ebd5f76abcb776f7cb4062bd79e3268c0dc4John McCall 28933cb0ebd5f76abcb776f7cb4062bd79e3268c0dc4John McCall // If we call SubstType with an InjectedClassNameType here we 28943cb0ebd5f76abcb776f7cb4062bd79e3268c0dc4John McCall // can end up in an infinite loop. 28953cb0ebd5f76abcb776f7cb4062bd79e3268c0dc4John McCall T = Context.getTypeDeclType(Record); 28963cb0ebd5f76abcb776f7cb4062bd79e3268c0dc4John McCall assert(isa<InjectedClassNameType>(T) && 28973cb0ebd5f76abcb776f7cb4062bd79e3268c0dc4John McCall "type of partial specialization is not an InjectedClassNameType"); 289831f17ecbef57b5679c017c375db330546b7b5145John McCall T = cast<InjectedClassNameType>(T)->getInjectedSpecializationType(); 28993cb0ebd5f76abcb776f7cb4062bd79e3268c0dc4John McCall } 2900e95b40961302c2130968ddfc3ba162e138f2118eDouglas Gregor 2901e95b40961302c2130968ddfc3ba162e138f2118eDouglas Gregor if (!T.isNull()) { 29028b013bdbf6474ed25d4017635cac851e51163c25Douglas Gregor // Substitute into the injected-class-name to get the type 29038b013bdbf6474ed25d4017635cac851e51163c25Douglas Gregor // corresponding to the instantiation we want, which may also be 29048b013bdbf6474ed25d4017635cac851e51163c25Douglas Gregor // the current instantiation (if we're in a template 29058b013bdbf6474ed25d4017635cac851e51163c25Douglas Gregor // definition). This substitution should never fail, since we 29068b013bdbf6474ed25d4017635cac851e51163c25Douglas Gregor // know we can instantiate the injected-class-name or we 29078b013bdbf6474ed25d4017635cac851e51163c25Douglas Gregor // wouldn't have gotten to the injected-class-name! 29088b013bdbf6474ed25d4017635cac851e51163c25Douglas Gregor 29098b013bdbf6474ed25d4017635cac851e51163c25Douglas Gregor // FIXME: Can we use the CurrentInstantiationScope to avoid this 29108b013bdbf6474ed25d4017635cac851e51163c25Douglas Gregor // extra instantiation in the common case? 2911e95b40961302c2130968ddfc3ba162e138f2118eDouglas Gregor T = SubstType(T, TemplateArgs, SourceLocation(), DeclarationName()); 2912e95b40961302c2130968ddfc3ba162e138f2118eDouglas Gregor assert(!T.isNull() && "Instantiation of injected-class-name cannot fail."); 2913e95b40961302c2130968ddfc3ba162e138f2118eDouglas Gregor 2914e95b40961302c2130968ddfc3ba162e138f2118eDouglas Gregor if (!T->isDependentType()) { 2915e95b40961302c2130968ddfc3ba162e138f2118eDouglas Gregor assert(T->isRecordType() && "Instantiation must produce a record type"); 2916e95b40961302c2130968ddfc3ba162e138f2118eDouglas Gregor return T->getAs<RecordType>()->getDecl(); 2917e95b40961302c2130968ddfc3ba162e138f2118eDouglas Gregor } 2918e95b40961302c2130968ddfc3ba162e138f2118eDouglas Gregor 29198b013bdbf6474ed25d4017635cac851e51163c25Douglas Gregor // We are performing "partial" template instantiation to create 29208b013bdbf6474ed25d4017635cac851e51163c25Douglas Gregor // the member declarations for the members of a class template 29218b013bdbf6474ed25d4017635cac851e51163c25Douglas Gregor // specialization. Therefore, D is actually referring to something 29228b013bdbf6474ed25d4017635cac851e51163c25Douglas Gregor // in the current instantiation. Look through the current 29238b013bdbf6474ed25d4017635cac851e51163c25Douglas Gregor // context, which contains actual instantiations, to find the 29248b013bdbf6474ed25d4017635cac851e51163c25Douglas Gregor // instantiation of the "current instantiation" that D refers 29258b013bdbf6474ed25d4017635cac851e51163c25Douglas Gregor // to. 29268b013bdbf6474ed25d4017635cac851e51163c25Douglas Gregor bool SawNonDependentContext = false; 29271eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump for (DeclContext *DC = CurContext; !DC->isFileContext(); 292852a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCall DC = DC->getParent()) { 29291eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (ClassTemplateSpecializationDecl *Spec 29308b013bdbf6474ed25d4017635cac851e51163c25Douglas Gregor = dyn_cast<ClassTemplateSpecializationDecl>(DC)) 2931e95b40961302c2130968ddfc3ba162e138f2118eDouglas Gregor if (isInstantiationOf(ClassTemplate, 2932e95b40961302c2130968ddfc3ba162e138f2118eDouglas Gregor Spec->getSpecializedTemplate())) 293352a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCall return Spec; 29348b013bdbf6474ed25d4017635cac851e51163c25Douglas Gregor 29358b013bdbf6474ed25d4017635cac851e51163c25Douglas Gregor if (!DC->isDependentContext()) 29368b013bdbf6474ed25d4017635cac851e51163c25Douglas Gregor SawNonDependentContext = true; 293752a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCall } 293852a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCall 29398b013bdbf6474ed25d4017635cac851e51163c25Douglas Gregor // We're performing "instantiation" of a member of the current 29408b013bdbf6474ed25d4017635cac851e51163c25Douglas Gregor // instantiation while we are type-checking the 29418b013bdbf6474ed25d4017635cac851e51163c25Douglas Gregor // definition. Compute the declaration context and return that. 29428b013bdbf6474ed25d4017635cac851e51163c25Douglas Gregor assert(!SawNonDependentContext && 29438b013bdbf6474ed25d4017635cac851e51163c25Douglas Gregor "No dependent context while instantiating record"); 29448b013bdbf6474ed25d4017635cac851e51163c25Douglas Gregor DeclContext *DC = computeDeclContext(T); 29458b013bdbf6474ed25d4017635cac851e51163c25Douglas Gregor assert(DC && 294652a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCall "Unable to find declaration for the current instantiation"); 29478b013bdbf6474ed25d4017635cac851e51163c25Douglas Gregor return cast<CXXRecordDecl>(DC); 294852a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCall } 29498b013bdbf6474ed25d4017635cac851e51163c25Douglas Gregor 2950e95b40961302c2130968ddfc3ba162e138f2118eDouglas Gregor // Fall through to deal with other dependent record types (e.g., 2951e95b40961302c2130968ddfc3ba162e138f2118eDouglas Gregor // anonymous unions in class templates). 2952e95b40961302c2130968ddfc3ba162e138f2118eDouglas Gregor } 295352a575a5ce7b27b6612357cdba5aa4ec1574ad5eJohn McCall 2954e95b40961302c2130968ddfc3ba162e138f2118eDouglas Gregor if (!ParentDC->isDependentContext()) 2955e95b40961302c2130968ddfc3ba162e138f2118eDouglas Gregor return D; 2956e95b40961302c2130968ddfc3ba162e138f2118eDouglas Gregor 29577c1e98f1cb37b40e619a0c8aee8b337f037b432bDouglas Gregor ParentDC = FindInstantiatedContext(Loc, ParentDC, TemplateArgs); 29581eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (!ParentDC) 295944c73848d5d5bd34c05582dc8398a20bea7cd971Douglas Gregor return 0; 29601eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2961815215daf8f642b53a28212313fca7b9f77e5b9dDouglas Gregor if (ParentDC != D->getDeclContext()) { 2962815215daf8f642b53a28212313fca7b9f77e5b9dDouglas Gregor // We performed some kind of instantiation in the parent context, 2963815215daf8f642b53a28212313fca7b9f77e5b9dDouglas Gregor // so now we need to look into the instantiated parent context to 2964815215daf8f642b53a28212313fca7b9f77e5b9dDouglas Gregor // find the instantiation of the declaration D. 29657c1e98f1cb37b40e619a0c8aee8b337f037b432bDouglas Gregor 29663cb0ebd5f76abcb776f7cb4062bd79e3268c0dc4John McCall // If our context used to be dependent, we may need to instantiate 29673cb0ebd5f76abcb776f7cb4062bd79e3268c0dc4John McCall // it before performing lookup into that context. 29683cb0ebd5f76abcb776f7cb4062bd79e3268c0dc4John McCall if (CXXRecordDecl *Spec = dyn_cast<CXXRecordDecl>(ParentDC)) { 29697c1e98f1cb37b40e619a0c8aee8b337f037b432bDouglas Gregor if (!Spec->isDependentContext()) { 29707c1e98f1cb37b40e619a0c8aee8b337f037b432bDouglas Gregor QualType T = Context.getTypeDeclType(Spec); 29713cb0ebd5f76abcb776f7cb4062bd79e3268c0dc4John McCall const RecordType *Tag = T->getAs<RecordType>(); 29723cb0ebd5f76abcb776f7cb4062bd79e3268c0dc4John McCall assert(Tag && "type of non-dependent record is not a RecordType"); 29733cb0ebd5f76abcb776f7cb4062bd79e3268c0dc4John McCall if (!Tag->isBeingDefined() && 29743cb0ebd5f76abcb776f7cb4062bd79e3268c0dc4John McCall RequireCompleteType(Loc, T, diag::err_incomplete_type)) 29753cb0ebd5f76abcb776f7cb4062bd79e3268c0dc4John McCall return 0; 2976a43064c7b721a51ab2c0d0ccdc4f84064aa7ceccDouglas Gregor 2977a43064c7b721a51ab2c0d0ccdc4f84064aa7ceccDouglas Gregor ParentDC = Tag->getDecl(); 29787c1e98f1cb37b40e619a0c8aee8b337f037b432bDouglas Gregor } 29797c1e98f1cb37b40e619a0c8aee8b337f037b432bDouglas Gregor } 29807c1e98f1cb37b40e619a0c8aee8b337f037b432bDouglas Gregor 2981815215daf8f642b53a28212313fca7b9f77e5b9dDouglas Gregor NamedDecl *Result = 0; 2982815215daf8f642b53a28212313fca7b9f77e5b9dDouglas Gregor if (D->getDeclName()) { 298317945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis DeclContext::lookup_result Found = ParentDC->lookup(D->getDeclName()); 2984815215daf8f642b53a28212313fca7b9f77e5b9dDouglas Gregor Result = findInstantiationOf(Context, D, Found.first, Found.second); 2985815215daf8f642b53a28212313fca7b9f77e5b9dDouglas Gregor } else { 2986815215daf8f642b53a28212313fca7b9f77e5b9dDouglas Gregor // Since we don't have a name for the entity we're looking for, 2987815215daf8f642b53a28212313fca7b9f77e5b9dDouglas Gregor // our only option is to walk through all of the declarations to 2988815215daf8f642b53a28212313fca7b9f77e5b9dDouglas Gregor // find that name. This will occur in a few cases: 2989815215daf8f642b53a28212313fca7b9f77e5b9dDouglas Gregor // 2990815215daf8f642b53a28212313fca7b9f77e5b9dDouglas Gregor // - anonymous struct/union within a template 2991815215daf8f642b53a28212313fca7b9f77e5b9dDouglas Gregor // - unnamed class/struct/union/enum within a template 2992815215daf8f642b53a28212313fca7b9f77e5b9dDouglas Gregor // 2993815215daf8f642b53a28212313fca7b9f77e5b9dDouglas Gregor // FIXME: Find a better way to find these instantiations! 29941eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Result = findInstantiationOf(Context, D, 299517945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis ParentDC->decls_begin(), 299617945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis ParentDC->decls_end()); 2997815215daf8f642b53a28212313fca7b9f77e5b9dDouglas Gregor } 29981eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 29999f54ad4381370c6b771424b53d219e661d6d6706John McCall // UsingShadowDecls can instantiate to nothing because of using hiding. 300000225547b51b42f7400eed36475b6672418a1151Douglas Gregor assert((Result || isa<UsingShadowDecl>(D) || D->isInvalidDecl() || 300100225547b51b42f7400eed36475b6672418a1151Douglas Gregor cast<Decl>(ParentDC)->isInvalidDecl()) 30029f54ad4381370c6b771424b53d219e661d6d6706John McCall && "Unable to find instantiation of declaration!"); 30039f54ad4381370c6b771424b53d219e661d6d6706John McCall 3004815215daf8f642b53a28212313fca7b9f77e5b9dDouglas Gregor D = Result; 3005815215daf8f642b53a28212313fca7b9f77e5b9dDouglas Gregor } 3006815215daf8f642b53a28212313fca7b9f77e5b9dDouglas Gregor 3007815215daf8f642b53a28212313fca7b9f77e5b9dDouglas Gregor return D; 3008815215daf8f642b53a28212313fca7b9f77e5b9dDouglas Gregor} 3009d7f37bf8b9a211455c5037df7b7e88e5a9510119Douglas Gregor 30101eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// \brief Performs template instantiation for all implicit template 3011d7f37bf8b9a211455c5037df7b7e88e5a9510119Douglas Gregor/// instantiations we have seen until this point. 301262c78d54bee499dd87f768f48b21c9b5ec15e516Chandler Carruthvoid Sema::PerformPendingInstantiations(bool LocalOnly) { 301360406bede202b66ebdd98cac0c38d20f9698aecaDouglas Gregor while (!PendingLocalImplicitInstantiations.empty() || 301462c78d54bee499dd87f768f48b21c9b5ec15e516Chandler Carruth (!LocalOnly && !PendingInstantiations.empty())) { 301560406bede202b66ebdd98cac0c38d20f9698aecaDouglas Gregor PendingImplicitInstantiation Inst; 301660406bede202b66ebdd98cac0c38d20f9698aecaDouglas Gregor 301760406bede202b66ebdd98cac0c38d20f9698aecaDouglas Gregor if (PendingLocalImplicitInstantiations.empty()) { 301862c78d54bee499dd87f768f48b21c9b5ec15e516Chandler Carruth Inst = PendingInstantiations.front(); 301962c78d54bee499dd87f768f48b21c9b5ec15e516Chandler Carruth PendingInstantiations.pop_front(); 302060406bede202b66ebdd98cac0c38d20f9698aecaDouglas Gregor } else { 302160406bede202b66ebdd98cac0c38d20f9698aecaDouglas Gregor Inst = PendingLocalImplicitInstantiations.front(); 302260406bede202b66ebdd98cac0c38d20f9698aecaDouglas Gregor PendingLocalImplicitInstantiations.pop_front(); 302360406bede202b66ebdd98cac0c38d20f9698aecaDouglas Gregor } 30241eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 30257caa6825f42a0f7e97d6fc06233133c42b218e46Douglas Gregor // Instantiate function definitions 30267caa6825f42a0f7e97d6fc06233133c42b218e46Douglas Gregor if (FunctionDecl *Function = dyn_cast<FunctionDecl>(Inst.first)) { 3027f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall PrettyDeclStackTraceEntry CrashInfo(*this, Function, SourceLocation(), 3028f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall "instantiating function definition"); 302958e390ef491c8fb11ae17445054ee09527b492d3Chandler Carruth bool DefinitionRequired = Function->getTemplateSpecializationKind() == 303058e390ef491c8fb11ae17445054ee09527b492d3Chandler Carruth TSK_ExplicitInstantiationDefinition; 303158e390ef491c8fb11ae17445054ee09527b492d3Chandler Carruth InstantiateFunctionDefinition(/*FIXME:*/Inst.second, Function, true, 303258e390ef491c8fb11ae17445054ee09527b492d3Chandler Carruth DefinitionRequired); 30337caa6825f42a0f7e97d6fc06233133c42b218e46Douglas Gregor continue; 30347caa6825f42a0f7e97d6fc06233133c42b218e46Douglas Gregor } 30351eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 30367caa6825f42a0f7e97d6fc06233133c42b218e46Douglas Gregor // Instantiate static data member definitions. 30377caa6825f42a0f7e97d6fc06233133c42b218e46Douglas Gregor VarDecl *Var = cast<VarDecl>(Inst.first); 30387caa6825f42a0f7e97d6fc06233133c42b218e46Douglas Gregor assert(Var->isStaticDataMember() && "Not a static data member?"); 3039c17fb7bd9a06b027c792c7dfad7e9fa430277affAnders Carlsson 3040291b441a095b289c30d9f311fe37a2cf5ed6fd45Chandler Carruth // Don't try to instantiate declarations if the most recent redeclaration 3041291b441a095b289c30d9f311fe37a2cf5ed6fd45Chandler Carruth // is invalid. 3042291b441a095b289c30d9f311fe37a2cf5ed6fd45Chandler Carruth if (Var->getMostRecentDeclaration()->isInvalidDecl()) 3043291b441a095b289c30d9f311fe37a2cf5ed6fd45Chandler Carruth continue; 3044291b441a095b289c30d9f311fe37a2cf5ed6fd45Chandler Carruth 3045291b441a095b289c30d9f311fe37a2cf5ed6fd45Chandler Carruth // Check if the most recent declaration has changed the specialization kind 3046291b441a095b289c30d9f311fe37a2cf5ed6fd45Chandler Carruth // and removed the need for implicit instantiation. 3047291b441a095b289c30d9f311fe37a2cf5ed6fd45Chandler Carruth switch (Var->getMostRecentDeclaration()->getTemplateSpecializationKind()) { 3048291b441a095b289c30d9f311fe37a2cf5ed6fd45Chandler Carruth case TSK_Undeclared: 3049291b441a095b289c30d9f311fe37a2cf5ed6fd45Chandler Carruth assert(false && "Cannot instantitiate an undeclared specialization."); 3050291b441a095b289c30d9f311fe37a2cf5ed6fd45Chandler Carruth case TSK_ExplicitInstantiationDeclaration: 3051291b441a095b289c30d9f311fe37a2cf5ed6fd45Chandler Carruth case TSK_ExplicitSpecialization: 305258e390ef491c8fb11ae17445054ee09527b492d3Chandler Carruth continue; // No longer need to instantiate this type. 305358e390ef491c8fb11ae17445054ee09527b492d3Chandler Carruth case TSK_ExplicitInstantiationDefinition: 305458e390ef491c8fb11ae17445054ee09527b492d3Chandler Carruth // We only need an instantiation if the pending instantiation *is* the 305558e390ef491c8fb11ae17445054ee09527b492d3Chandler Carruth // explicit instantiation. 305658e390ef491c8fb11ae17445054ee09527b492d3Chandler Carruth if (Var != Var->getMostRecentDeclaration()) continue; 3057291b441a095b289c30d9f311fe37a2cf5ed6fd45Chandler Carruth case TSK_ImplicitInstantiation: 3058291b441a095b289c30d9f311fe37a2cf5ed6fd45Chandler Carruth break; 3059291b441a095b289c30d9f311fe37a2cf5ed6fd45Chandler Carruth } 3060291b441a095b289c30d9f311fe37a2cf5ed6fd45Chandler Carruth 3061f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall PrettyDeclStackTraceEntry CrashInfo(*this, Var, Var->getLocation(), 3062f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall "instantiating static data member " 3063f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall "definition"); 30641eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 306558e390ef491c8fb11ae17445054ee09527b492d3Chandler Carruth bool DefinitionRequired = Var->getTemplateSpecializationKind() == 306658e390ef491c8fb11ae17445054ee09527b492d3Chandler Carruth TSK_ExplicitInstantiationDefinition; 306758e390ef491c8fb11ae17445054ee09527b492d3Chandler Carruth InstantiateStaticDataMemberDefinition(/*FIXME:*/Inst.second, Var, true, 306858e390ef491c8fb11ae17445054ee09527b492d3Chandler Carruth DefinitionRequired); 3069d7f37bf8b9a211455c5037df7b7e88e5a9510119Douglas Gregor } 3070d7f37bf8b9a211455c5037df7b7e88e5a9510119Douglas Gregor} 30710c01d18094100db92d38daa923c95661512db203John McCall 30720c01d18094100db92d38daa923c95661512db203John McCallvoid Sema::PerformDependentDiagnostics(const DeclContext *Pattern, 30730c01d18094100db92d38daa923c95661512db203John McCall const MultiLevelTemplateArgumentList &TemplateArgs) { 30740c01d18094100db92d38daa923c95661512db203John McCall for (DeclContext::ddiag_iterator I = Pattern->ddiag_begin(), 30750c01d18094100db92d38daa923c95661512db203John McCall E = Pattern->ddiag_end(); I != E; ++I) { 30760c01d18094100db92d38daa923c95661512db203John McCall DependentDiagnostic *DD = *I; 30770c01d18094100db92d38daa923c95661512db203John McCall 30780c01d18094100db92d38daa923c95661512db203John McCall switch (DD->getKind()) { 30790c01d18094100db92d38daa923c95661512db203John McCall case DependentDiagnostic::Access: 30800c01d18094100db92d38daa923c95661512db203John McCall HandleDependentAccessCheck(*DD, TemplateArgs); 30810c01d18094100db92d38daa923c95661512db203John McCall break; 30820c01d18094100db92d38daa923c95661512db203John McCall } 30830c01d18094100db92d38daa923c95661512db203John McCall } 30840c01d18094100db92d38daa923c95661512db203John McCall} 3085