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-rw-r--r--lib/Sema/SemaTemplateInstantiate.cpp424
1 files changed, 189 insertions, 235 deletions
diff --git a/lib/Sema/SemaTemplateInstantiate.cpp b/lib/Sema/SemaTemplateInstantiate.cpp
index 1e7569a9b2..f864a50c5e 100644
--- a/lib/Sema/SemaTemplateInstantiate.cpp
+++ b/lib/Sema/SemaTemplateInstantiate.cpp
@@ -17,283 +17,246 @@
#include "clang/AST/DeclTemplate.h"
#include "clang/Parse/DeclSpec.h"
#include "clang/Basic/LangOptions.h"
+#include "llvm/Support/Compiler.h"
using namespace clang;
//===----------------------------------------------------------------------===/
// Template Instantiation for Types
//===----------------------------------------------------------------------===/
+namespace {
+ class VISIBILITY_HIDDEN TemplateTypeInstantiator {
+ Sema &SemaRef;
+ const TemplateArgument *TemplateArgs;
+ unsigned NumTemplateArgs;
+ SourceLocation Loc;
+ DeclarationName Entity;
+
+ public:
+ TemplateTypeInstantiator(Sema &SemaRef,
+ const TemplateArgument *TemplateArgs,
+ unsigned NumTemplateArgs,
+ SourceLocation Loc,
+ DeclarationName Entity)
+ : SemaRef(SemaRef), TemplateArgs(TemplateArgs),
+ NumTemplateArgs(NumTemplateArgs), Loc(Loc), Entity(Entity) { }
+
+ QualType operator()(QualType T) const { return Instantiate(T); }
+
+ QualType Instantiate(QualType T) const;
+
+ // Declare instantiate functions for each type.
+#define TYPE(Class, Base) \
+ QualType Instantiate##Class##Type(const Class##Type *T, \
+ unsigned Quals) const;
+#define ABSTRACT_TYPE(Class, Base)
+#include "clang/AST/TypeNodes.def"
+ };
+}
-static QualType PerformTypeInstantiation(Sema &SemaRef,
- const ExtQualType *T,
- unsigned CVR,
- const TemplateArgument *TemplateArgs,
- unsigned NumTemplateArgs,
- SourceLocation Loc,
- DeclarationName Entity) {
+QualType
+TemplateTypeInstantiator::InstantiateExtQualType(const ExtQualType *T,
+ unsigned Quals) const {
// FIXME: Implement this
assert(false && "Cannot instantiate ExtQualType yet");
return QualType();
}
-static QualType PerformTypeInstantiation(Sema &SemaRef,
- const BuiltinType *T,
- unsigned CVR,
- const TemplateArgument *TemplateArgs,
- unsigned NumTemplateArgs,
- SourceLocation Loc,
- DeclarationName Entity) {
+QualType
+TemplateTypeInstantiator::InstantiateBuiltinType(const BuiltinType *T,
+ unsigned Quals) const {
assert(false && "BuiltinType is never dependent and cannot be instantiated");
- return QualType(T, CVR);
+ return QualType(T, Quals);
}
-static QualType PerformTypeInstantiation(Sema &SemaRef,
- const FixedWidthIntType *T,
- unsigned CVR,
- const TemplateArgument *TemplateArgs,
- unsigned NumTemplateArgs,
- SourceLocation Loc,
- DeclarationName Entity) {
+QualType
+TemplateTypeInstantiator::
+InstantiateFixedWidthIntType(const FixedWidthIntType *T, unsigned Quals) const {
// FIXME: Implement this
assert(false && "Cannot instantiate FixedWidthIntType yet");
return QualType();
}
-static QualType PerformTypeInstantiation(Sema &SemaRef,
- const ComplexType *T,
- unsigned CVR,
- const TemplateArgument *TemplateArgs,
- unsigned NumTemplateArgs,
- SourceLocation Loc,
- DeclarationName Entity) {
+QualType
+TemplateTypeInstantiator::InstantiateComplexType(const ComplexType *T,
+ unsigned Quals) const {
// FIXME: Implement this
assert(false && "Cannot instantiate ComplexType yet");
return QualType();
}
-static QualType PerformTypeInstantiation(Sema &SemaRef,
- const PointerType *T,
- unsigned CVR,
- const TemplateArgument *TemplateArgs,
- unsigned NumTemplateArgs,
- SourceLocation Loc,
- DeclarationName Entity) {
- // FIXME: Implement this
- assert(false && "Cannot instantiate PointerType yet");
- return QualType();
+QualType
+TemplateTypeInstantiator::InstantiatePointerType(const PointerType *T,
+ unsigned Quals) const {
+ QualType PointeeType = Instantiate(T->getPointeeType());
+ if (PointeeType.isNull())
+ return QualType();
+
+ return SemaRef.BuildPointerType(PointeeType, Quals, Loc, Entity);
}
-static QualType PerformTypeInstantiation(Sema &SemaRef,
- const BlockPointerType *T,
- unsigned CVR,
- const TemplateArgument *TemplateArgs,
- unsigned NumTemplateArgs,
- SourceLocation Loc,
- DeclarationName Entity) {
+QualType
+TemplateTypeInstantiator::InstantiateBlockPointerType(const BlockPointerType *T,
+ unsigned Quals) const {
// FIXME: Implement this
assert(false && "Cannot instantiate BlockPointerType yet");
return QualType();
}
-static QualType PerformTypeInstantiation(Sema &SemaRef,
- const ReferenceType *T,
- unsigned CVR,
- const TemplateArgument *TemplateArgs,
- unsigned NumTemplateArgs,
- SourceLocation Loc,
- DeclarationName Entity) {
- // FIXME: Implement this
- assert(false && "Cannot instantiate ReferenceType yet");
- return QualType();
+QualType
+TemplateTypeInstantiator::InstantiateReferenceType(const ReferenceType *T,
+ unsigned Quals) const {
+ QualType ReferentType = Instantiate(T->getPointeeType());
+ if (ReferentType.isNull())
+ return QualType();
+
+ return SemaRef.BuildReferenceType(ReferentType, Quals, Loc, Entity);
}
-static QualType PerformTypeInstantiation(Sema &SemaRef,
- const MemberPointerType *T,
- unsigned CVR,
- const TemplateArgument *TemplateArgs,
- unsigned NumTemplateArgs,
- SourceLocation Loc,
- DeclarationName Entity) {
+QualType
+TemplateTypeInstantiator::
+InstantiateMemberPointerType(const MemberPointerType *T,
+ unsigned Quals) const {
// FIXME: Implement this
assert(false && "Cannot instantiate MemberPointerType yet");
return QualType();
}
-static QualType PerformTypeInstantiation(Sema &SemaRef,
- const ConstantArrayType *T,
- unsigned CVR,
- const TemplateArgument *TemplateArgs,
- unsigned NumTemplateArgs,
- SourceLocation Loc,
- DeclarationName Entity) {
- // FIXME: Implement this
- assert(false && "Cannot instantiate ConstantArrayType yet");
- return QualType();
+QualType
+TemplateTypeInstantiator::
+InstantiateConstantArrayType(const ConstantArrayType *T,
+ unsigned Quals) const {
+ QualType ElementType = Instantiate(T->getElementType());
+ if (ElementType.isNull())
+ return ElementType;
+
+ // Build a temporary integer literal to specify the size for
+ // BuildArrayType. Since we have already checked the size as part of
+ // creating the dependent array type in the first place, we know
+ // there aren't any errors.
+ IntegerLiteral ArraySize(T->getSize(), SemaRef.Context.IntTy, Loc);
+ return SemaRef.BuildArrayType(ElementType, T->getSizeModifier(),
+ &ArraySize, T->getIndexTypeQualifier(),
+ Loc, Entity);
}
-static QualType PerformTypeInstantiation(Sema &SemaRef,
- const IncompleteArrayType *T,
- unsigned CVR,
- const TemplateArgument *TemplateArgs,
- unsigned NumTemplateArgs,
- SourceLocation Loc,
- DeclarationName Entity) {
- // FIXME: Implement this
- assert(false && "Cannot instantiate IncompleteArrayType yet");
- return QualType();
+QualType
+TemplateTypeInstantiator::
+InstantiateIncompleteArrayType(const IncompleteArrayType *T,
+ unsigned Quals) const {
+ QualType ElementType = Instantiate(T->getElementType());
+ if (ElementType.isNull())
+ return ElementType;
+
+ return SemaRef.BuildArrayType(ElementType, T->getSizeModifier(),
+ 0, T->getIndexTypeQualifier(),
+ Loc, Entity);
}
-static QualType PerformTypeInstantiation(Sema &SemaRef,
- const VariableArrayType *T,
- unsigned CVR,
- const TemplateArgument *TemplateArgs,
- unsigned NumTemplateArgs,
- SourceLocation Loc,
- DeclarationName Entity) {
+QualType
+TemplateTypeInstantiator::
+InstantiateVariableArrayType(const VariableArrayType *T,
+ unsigned Quals) const {
// FIXME: Implement this
assert(false && "Cannot instantiate VariableArrayType yet");
return QualType();
}
-static QualType PerformTypeInstantiation(Sema &SemaRef,
- const DependentSizedArrayType *T,
- unsigned CVR,
- const TemplateArgument *TemplateArgs,
- unsigned NumTemplateArgs,
- SourceLocation Loc,
- DeclarationName Entity) {
+QualType
+TemplateTypeInstantiator::
+InstantiateDependentSizedArrayType(const DependentSizedArrayType *T,
+ unsigned Quals) const {
// FIXME: Implement this
assert(false && "Cannot instantiate DependentSizedArrayType yet");
return QualType();
}
-static QualType PerformTypeInstantiation(Sema &SemaRef,
- const VectorType *T,
- unsigned CVR,
- const TemplateArgument *TemplateArgs,
- unsigned NumTemplateArgs,
- SourceLocation Loc,
- DeclarationName Entity) {
+QualType
+TemplateTypeInstantiator::InstantiateVectorType(const VectorType *T,
+ unsigned Quals) const {
// FIXME: Implement this
assert(false && "Cannot instantiate VectorType yet");
return QualType();
}
-static QualType PerformTypeInstantiation(Sema &SemaRef,
- const ExtVectorType *T,
- unsigned CVR,
- const TemplateArgument *TemplateArgs,
- unsigned NumTemplateArgs,
- SourceLocation Loc,
- DeclarationName Entity) {
+QualType
+TemplateTypeInstantiator::InstantiateExtVectorType(const ExtVectorType *T,
+ unsigned Quals) const {
// FIXME: Implement this
assert(false && "Cannot instantiate ExtVectorType yet");
return QualType();
}
-static QualType PerformTypeInstantiation(Sema &SemaRef,
- const FunctionProtoType *T,
- unsigned CVR,
- const TemplateArgument *TemplateArgs,
- unsigned NumTemplateArgs,
- SourceLocation Loc,
- DeclarationName Entity) {
+QualType
+TemplateTypeInstantiator::
+InstantiateFunctionProtoType(const FunctionProtoType *T,
+ unsigned Quals) const {
// FIXME: Implement this
assert(false && "Cannot instantiate FunctionProtoType yet");
return QualType();
}
-static QualType PerformTypeInstantiation(Sema &SemaRef,
- const FunctionNoProtoType *T,
- unsigned CVR,
- const TemplateArgument *TemplateArgs,
- unsigned NumTemplateArgs,
- SourceLocation Loc,
- DeclarationName Entity) {
+QualType
+TemplateTypeInstantiator::
+InstantiateFunctionNoProtoType(const FunctionNoProtoType *T,
+ unsigned Quals) const {
// FIXME: Implement this
assert(false && "Cannot instantiate FunctionNoProtoType yet");
return QualType();
}
-static QualType PerformTypeInstantiation(Sema &SemaRef,
- const TypedefType *T,
- unsigned CVR,
- const TemplateArgument *TemplateArgs,
- unsigned NumTemplateArgs,
- SourceLocation Loc,
- DeclarationName Entity) {
+QualType
+TemplateTypeInstantiator::InstantiateTypedefType(const TypedefType *T,
+ unsigned Quals) const {
// FIXME: Implement this
assert(false && "Cannot instantiate TypedefType yet");
return QualType();
}
-static QualType PerformTypeInstantiation(Sema &SemaRef,
- const TypeOfExprType *T,
- unsigned CVR,
- const TemplateArgument *TemplateArgs,
- unsigned NumTemplateArgs,
- SourceLocation Loc,
- DeclarationName Entity) {
+QualType
+TemplateTypeInstantiator::InstantiateTypeOfExprType(const TypeOfExprType *T,
+ unsigned Quals) const {
// FIXME: Implement this
assert(false && "Cannot instantiate TypeOfExprType yet");
return QualType();
}
-static QualType PerformTypeInstantiation(Sema &SemaRef,
- const TypeOfType *T,
- unsigned CVR,
- const TemplateArgument *TemplateArgs,
- unsigned NumTemplateArgs,
- SourceLocation Loc,
- DeclarationName Entity) {
+QualType
+TemplateTypeInstantiator::InstantiateTypeOfType(const TypeOfType *T,
+ unsigned Quals) const {
// FIXME: Implement this
assert(false && "Cannot instantiate TypeOfType yet");
return QualType();
}
-static QualType PerformTypeInstantiation(Sema &SemaRef,
- const RecordType *T,
- unsigned CVR,
- const TemplateArgument *TemplateArgs,
- unsigned NumTemplateArgs,
- SourceLocation Loc,
- DeclarationName Entity) {
+QualType
+TemplateTypeInstantiator::InstantiateRecordType(const RecordType *T,
+ unsigned Quals) const {
// FIXME: Implement this
assert(false && "Cannot instantiate RecordType yet");
return QualType();
}
-static QualType PerformTypeInstantiation(Sema &SemaRef,
- const CXXRecordType *T,
- unsigned CVR,
- const TemplateArgument *TemplateArgs,
- unsigned NumTemplateArgs,
- SourceLocation Loc,
- DeclarationName Entity) {
+QualType
+TemplateTypeInstantiator::InstantiateCXXRecordType(const CXXRecordType *T,
+ unsigned Quals) const {
// FIXME: Implement this
assert(false && "Cannot instantiate CXXRecordType yet");
return QualType();
}
-static QualType PerformTypeInstantiation(Sema &SemaRef,
- const EnumType *T,
- unsigned CVR,
- const TemplateArgument *TemplateArgs,
- unsigned NumTemplateArgs,
- SourceLocation Loc,
- DeclarationName Entity) {
+QualType
+TemplateTypeInstantiator::InstantiateEnumType(const EnumType *T,
+ unsigned Quals) const {
// FIXME: Implement this
assert(false && "Cannot instantiate EnumType yet");
return QualType();
}
-static QualType PerformTypeInstantiation(Sema &SemaRef,
- const TemplateTypeParmType *T,
- unsigned CVR,
- const TemplateArgument *TemplateArgs,
- unsigned NumTemplateArgs,
- SourceLocation Loc,
- DeclarationName Entity) {
+QualType
+TemplateTypeInstantiator::
+InstantiateTemplateTypeParmType(const TemplateTypeParmType *T,
+ unsigned Quals) const {
if (T->getDepth() == 0) {
// Replace the template type parameter with its corresponding
// template argument.
@@ -301,7 +264,7 @@ static QualType PerformTypeInstantiation(Sema &SemaRef,
assert(TemplateArgs[T->getIndex()].getKind() == TemplateArgument::Type &&
"Template argument kind mismatch");
QualType Result = TemplateArgs[T->getIndex()].getAsType();
- if (Result.isNull() || !CVR)
+ if (Result.isNull() || !Quals)
return Result;
// C++ [dcl.ref]p1:
@@ -309,10 +272,10 @@ static QualType PerformTypeInstantiation(Sema &SemaRef,
// the cv-qualifiers are introduced through the use of a
// typedef (7.1.3) or of a template type argument (14.3), in
// which case the cv-qualifiers are ignored.
- if (CVR && Result->isReferenceType())
- CVR = 0;
+ if (Quals && Result->isReferenceType())
+ Quals = 0;
- return QualType(Result.getTypePtr(), CVR | Result.getCVRQualifiers());
+ return QualType(Result.getTypePtr(), Quals | Result.getCVRQualifiers());
}
// The template type parameter comes from an inner template (e.g.,
@@ -321,69 +284,70 @@ static QualType PerformTypeInstantiation(Sema &SemaRef,
// parameter with the template "level" reduced by one.
return SemaRef.Context.getTemplateTypeParmType(T->getDepth() - 1,
T->getIndex(),
- T->getName());
+ T->getName())
+ .getQualifiedType(Quals);
}
-static QualType PerformTypeInstantiation(Sema &SemaRef,
- const ClassTemplateSpecializationType *T,
- unsigned CVR,
- const TemplateArgument *TemplateArgs,
- unsigned NumTemplateArgs,
- SourceLocation Loc,
- DeclarationName Entity) {
+QualType
+TemplateTypeInstantiator::
+InstantiateClassTemplateSpecializationType(
+ const ClassTemplateSpecializationType *T,
+ unsigned Quals) const {
// FIXME: Implement this
assert(false && "Cannot instantiate ClassTemplateSpecializationType yet");
return QualType();
}
-static QualType PerformTypeInstantiation(Sema &SemaRef,
- const ObjCInterfaceType *T,
- unsigned CVR,
- const TemplateArgument *TemplateArgs,
- unsigned NumTemplateArgs,
- SourceLocation Loc,
- DeclarationName Entity) {
- // FIXME: Implement this
- assert(false && "Cannot instantiate ObjCInterfaceType yet");
+QualType
+TemplateTypeInstantiator::
+InstantiateObjCInterfaceType(const ObjCInterfaceType *T,
+ unsigned Quals) const {
+ assert(false && "Objective-C types cannot be dependent");
return QualType();
}
-static QualType PerformTypeInstantiation(Sema &SemaRef,
- const ObjCQualifiedInterfaceType *T,
- unsigned CVR,
- const TemplateArgument *TemplateArgs,
- unsigned NumTemplateArgs,
- SourceLocation Loc,
- DeclarationName Entity) {
- // FIXME: Implement this
- assert(false && "Cannot instantiate ObjCQualifiedInterfaceType yet");
+QualType
+TemplateTypeInstantiator::
+InstantiateObjCQualifiedInterfaceType(const ObjCQualifiedInterfaceType *T,
+ unsigned Quals) const {
+ assert(false && "Objective-C types cannot be dependent");
return QualType();
}
-static QualType PerformTypeInstantiation(Sema &SemaRef,
- const ObjCQualifiedIdType *T,
- unsigned CVR,
- const TemplateArgument *TemplateArgs,
- unsigned NumTemplateArgs,
- SourceLocation Loc,
- DeclarationName Entity) {
- // FIXME: Implement this
- assert(false && "Cannot instantiate ObjCQualifiedIdType yet");
+QualType
+TemplateTypeInstantiator::
+InstantiateObjCQualifiedIdType(const ObjCQualifiedIdType *T,
+ unsigned Quals) const {
+ assert(false && "Objective-C types cannot be dependent");
return QualType();
}
-static QualType PerformTypeInstantiation(Sema &SemaRef,
- const ObjCQualifiedClassType *T,
- unsigned CVR,
- const TemplateArgument *TemplateArgs,
- unsigned NumTemplateArgs,
- SourceLocation Loc,
- DeclarationName Entity) {
- // FIXME: Implement this
- assert(false && "Cannot instantiate ObjCQualifiedClassType yet");
+QualType
+TemplateTypeInstantiator::
+InstantiateObjCQualifiedClassType(const ObjCQualifiedClassType *T,
+ unsigned Quals) const {
+ assert(false && "Objective-C types cannot be dependent");
return QualType();
}
+/// \brief The actual implementation of Sema::InstantiateType().
+QualType TemplateTypeInstantiator::Instantiate(QualType T) const {
+ // If T is not a dependent type, there is nothing to do.
+ if (!T->isDependentType())
+ return T;
+
+ switch (T->getTypeClass()) {
+#define TYPE(Class, Base) \
+ case Type::Class: \
+ return Instantiate##Class##Type(cast<Class##Type>(T.getTypePtr()), \
+ T.getCVRQualifiers());
+#define ABSTRACT_TYPE(Class, Base)
+#include "clang/AST/TypeNodes.def"
+ }
+
+ assert(false && "Not all types have been decoded for instantiation");
+ return QualType();
+}
/// \brief Instantiate the type T with a given set of template arguments.
///
@@ -422,17 +386,7 @@ QualType Sema::InstantiateType(QualType T,
if (!T->isDependentType())
return T;
- switch (T->getTypeClass()) {
-#define TYPE(Class, Base) \
- case Type::Class: \
- return PerformTypeInstantiation(*this, \
- cast<Class##Type>(T.getTypePtr()), \
- T.getCVRQualifiers(), TemplateArgs, \
- NumTemplateArgs, Loc, Entity);
-#define ABSTRACT_TYPE(Class, Base)
-#include "clang/AST/TypeNodes.def"
- }
-
- assert(false && "Not all types have been decoded for instantiation");
- return QualType();
+ TemplateTypeInstantiator Instantiator(*this, TemplateArgs, NumTemplateArgs,
+ Loc, Entity);
+ return Instantiator(T);
}
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2025-05-07 18:13:47 +0000