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//===--- DeclGroup.cpp - Classes for representing groups of Decls -*- C++ -*-==//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file defines the DeclGroup and DeclGroupRef classes.
//
//===----------------------------------------------------------------------===//
#include "clang/AST/DeclGroup.h"
#include "clang/AST/ASTContext.h"
#include "clang/AST/Decl.h"
#include "llvm/Support/Allocator.h"
using namespace clang;
DeclGroup* DeclGroup::Create(ASTContext &C, Decl **Decls, unsigned NumDecls) {
static_assert(sizeof(DeclGroup) % llvm::AlignOf<void *>::Alignment == 0,
"Trailing data is unaligned!");
assert(NumDecls > 1 && "Invalid DeclGroup");
unsigned Size = sizeof(DeclGroup) + sizeof(Decl*) * NumDecls;
void* Mem = C.Allocate(Size, llvm::AlignOf<DeclGroup>::Alignment);
new (Mem) DeclGroup(NumDecls, Decls);
return static_cast<DeclGroup*>(Mem);
}
DeclGroup::DeclGroup(unsigned numdecls, Decl** decls) : NumDecls(numdecls) {
assert(numdecls > 0);
assert(decls);
memcpy(this+1, decls, numdecls * sizeof(*decls));
}
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