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//===--- TemplateBase.cpp - Common template AST class 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 common classes used throughout C++ template
// representations.
//
//===----------------------------------------------------------------------===//
#include "llvm/ADT/FoldingSet.h"
#include "clang/AST/TemplateBase.h"
#include "clang/AST/DeclBase.h"
#include "clang/AST/Expr.h"
using namespace clang;
//===----------------------------------------------------------------------===//
// TemplateArgument Implementation
//===----------------------------------------------------------------------===//
TemplateArgument::TemplateArgument(Expr *E) : Kind(Expression) {
TypeOrValue = reinterpret_cast<uintptr_t>(E);
StartLoc = E->getSourceRange().getBegin();
}
/// \brief Construct a template argument pack.
void TemplateArgument::setArgumentPack(TemplateArgument *args, unsigned NumArgs,
bool CopyArgs) {
assert(isNull() && "Must call setArgumentPack on a null argument");
Kind = Pack;
Args.NumArgs = NumArgs;
Args.CopyArgs = CopyArgs;
if (!Args.CopyArgs) {
Args.Args = args;
return;
}
// FIXME: Allocate in ASTContext
Args.Args = new TemplateArgument[NumArgs];
for (unsigned I = 0; I != Args.NumArgs; ++I)
Args.Args[I] = args[I];
}
void TemplateArgument::Profile(llvm::FoldingSetNodeID &ID,
ASTContext &Context) const {
ID.AddInteger(Kind);
switch (Kind) {
case Null:
break;
case Type:
getAsType().Profile(ID);
break;
case Declaration:
ID.AddPointer(getAsDecl()? getAsDecl()->getCanonicalDecl() : 0);
break;
case Integral:
getAsIntegral()->Profile(ID);
getIntegralType().Profile(ID);
break;
case Expression:
getAsExpr()->Profile(ID, Context, true);
break;
case Pack:
ID.AddInteger(Args.NumArgs);
for (unsigned I = 0; I != Args.NumArgs; ++I)
Args.Args[I].Profile(ID, Context);
}
}
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