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//===--- DeclCXX.cpp - C++ Declaration AST Node Implementation ------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file implements the C++ related Decl classes for templates.
//
//===----------------------------------------------------------------------===//
#include "clang/AST/DeclCXX.h"
#include "clang/AST/DeclTemplate.h"
#include "clang/AST/Expr.h"
#include "clang/AST/ASTContext.h"
#include "clang/Basic/IdentifierTable.h"
#include "llvm/ADT/STLExtras.h"
using namespace clang;
//===----------------------------------------------------------------------===//
// TemplateParameterList Implementation
//===----------------------------------------------------------------------===//
TemplateParameterList::TemplateParameterList(SourceLocation TemplateLoc,
SourceLocation LAngleLoc,
Decl **Params, unsigned NumParams,
SourceLocation RAngleLoc)
: TemplateLoc(TemplateLoc), LAngleLoc(LAngleLoc), RAngleLoc(RAngleLoc),
NumParams(NumParams) {
for (unsigned Idx = 0; Idx < NumParams; ++Idx)
begin()[Idx] = Params[Idx];
}
TemplateParameterList *
TemplateParameterList::Create(ASTContext &C, SourceLocation TemplateLoc,
SourceLocation LAngleLoc, Decl **Params,
unsigned NumParams, SourceLocation RAngleLoc) {
unsigned Size = sizeof(TemplateParameterList) + sizeof(Decl *) * NumParams;
unsigned Align = llvm::AlignOf<TemplateParameterList>::Alignment;
void *Mem = C.Allocate(Size, Align);
return new (Mem) TemplateParameterList(TemplateLoc, LAngleLoc, Params,
NumParams, RAngleLoc);
}
unsigned TemplateParameterList::getMinRequiredArguments() const {
unsigned NumRequiredArgs = size();
iterator Param = const_cast<TemplateParameterList *>(this)->end(),
ParamBegin = const_cast<TemplateParameterList *>(this)->begin();
while (Param != ParamBegin) {
--Param;
if (!(isa<TemplateTypeParmDecl>(*Param) &&
cast<TemplateTypeParmDecl>(*Param)->hasDefaultArgument()) &&
!(isa<NonTypeTemplateParmDecl>(*Param) &&
cast<NonTypeTemplateParmDecl>(*Param)->hasDefaultArgument()) &&
!(isa<TemplateTemplateParmDecl>(*Param) &&
cast<TemplateTemplateParmDecl>(*Param)->hasDefaultArgument()))
break;
--NumRequiredArgs;
}
return NumRequiredArgs;
}
//===----------------------------------------------------------------------===//
// TemplateDecl Implementation
//===----------------------------------------------------------------------===//
TemplateDecl::~TemplateDecl() {
}
//===----------------------------------------------------------------------===//
// FunctionTemplateDecl Implementation
//===----------------------------------------------------------------------===//
FunctionTemplateDecl *FunctionTemplateDecl::Create(ASTContext &C,
DeclContext *DC,
SourceLocation L,
DeclarationName Name,
TemplateParameterList *Params,
NamedDecl *Decl) {
return new (C) FunctionTemplateDecl(DC, L, Name, Params, Decl);
}
//===----------------------------------------------------------------------===//
// ClassTemplateDecl Implementation
//===----------------------------------------------------------------------===//
ClassTemplateDecl *ClassTemplateDecl::Create(ASTContext &C,
DeclContext *DC,
SourceLocation L,
DeclarationName Name,
TemplateParameterList *Params,
NamedDecl *Decl) {
return new (C) ClassTemplateDecl(DC, L, Name, Params, Decl);
}
//===----------------------------------------------------------------------===//
// TemplateTypeParm Allocation/Deallocation Method Implementations
//===----------------------------------------------------------------------===//
TemplateTypeParmDecl *
TemplateTypeParmDecl::Create(ASTContext &C, DeclContext *DC,
SourceLocation L, unsigned D, unsigned P,
IdentifierInfo *Id, bool Typename) {
QualType Type = C.getTemplateTypeParmType(D, P, Id);
return new (C) TemplateTypeParmDecl(DC, L, Id, Typename, Type);
}
//===----------------------------------------------------------------------===//
// NonTypeTemplateParmDecl Method Implementations
//===----------------------------------------------------------------------===//
NonTypeTemplateParmDecl *
NonTypeTemplateParmDecl::Create(ASTContext &C, DeclContext *DC,
SourceLocation L, unsigned D, unsigned P,
IdentifierInfo *Id, QualType T,
SourceLocation TypeSpecStartLoc) {
return new (C) NonTypeTemplateParmDecl(DC, L, D, P, Id, T,
TypeSpecStartLoc);
}
SourceLocation NonTypeTemplateParmDecl::getDefaultArgumentLoc() const {
return DefaultArgument? DefaultArgument->getSourceRange().getBegin()
: SourceLocation();
}
//===----------------------------------------------------------------------===//
// TemplateTemplateParmDecl Method Implementations
//===----------------------------------------------------------------------===//
TemplateTemplateParmDecl *
TemplateTemplateParmDecl::Create(ASTContext &C, DeclContext *DC,
SourceLocation L, unsigned D, unsigned P,
IdentifierInfo *Id,
TemplateParameterList *Params) {
return new (C) TemplateTemplateParmDecl(DC, L, D, P, Id, Params);
}
SourceLocation TemplateTemplateParmDecl::getDefaultArgumentLoc() const {
return DefaultArgument? DefaultArgument->getSourceRange().getBegin()
: SourceLocation();
}
//===----------------------------------------------------------------------===//
// ClassTemplateSpecializationDecl Implementation
//===----------------------------------------------------------------------===//
ClassTemplateSpecializationDecl::
ClassTemplateSpecializationDecl(DeclContext *DC, SourceLocation L,
ClassTemplateDecl *SpecializedTemplate,
TemplateArgument *TemplateArgs,
unsigned NumTemplateArgs)
: CXXRecordDecl(ClassTemplateSpecialization,
SpecializedTemplate->getTemplatedDecl()->getTagKind(),
DC, L,
// FIXME: Should we use DeclarationName for the name of
// class template specializations?
SpecializedTemplate->getIdentifier()),
SpecializedTemplate(SpecializedTemplate),
NumTemplateArgs(NumTemplateArgs), SpecializationKind(TSK_Undeclared) {
TemplateArgument *Arg = reinterpret_cast<TemplateArgument *>(this + 1);
for (unsigned ArgIdx = 0; ArgIdx < NumTemplateArgs; ++ArgIdx, ++Arg)
new (Arg) TemplateArgument(TemplateArgs[ArgIdx]);
}
ClassTemplateSpecializationDecl *
ClassTemplateSpecializationDecl::Create(ASTContext &Context,
DeclContext *DC, SourceLocation L,
ClassTemplateDecl *SpecializedTemplate,
TemplateArgument *TemplateArgs,
unsigned NumTemplateArgs,
ClassTemplateSpecializationDecl *PrevDecl) {
unsigned Size = sizeof(ClassTemplateSpecializationDecl) +
sizeof(TemplateArgument) * NumTemplateArgs;
unsigned Align = llvm::AlignOf<ClassTemplateSpecializationDecl>::Alignment;
void *Mem = Context.Allocate(Size, Align);
ClassTemplateSpecializationDecl *Result
= new (Mem) ClassTemplateSpecializationDecl(DC, L, SpecializedTemplate,
TemplateArgs, NumTemplateArgs);
// FIXME: Do we want a prettier type here?
Context.getTypeDeclType(Result, PrevDecl);
return Result;
}
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