1 //===- DeclGroup.cpp - Classes for representing groups of Decls -----------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 //
9 //  This file defines the DeclGroup and DeclGroupRef classes.
10 //
11 //===----------------------------------------------------------------------===//
12 
13 #include "clang/AST/DeclGroup.h"
14 #include "clang/AST/ASTContext.h"
15 #include <cassert>
16 #include <memory>
17 
18 using namespace clang;
19 
20 DeclGroup* DeclGroup::Create(ASTContext &C, Decl **Decls, unsigned NumDecls) {
21   assert(NumDecls > 1 && "Invalid DeclGroup");
22   unsigned Size = totalSizeToAlloc<Decl *>(NumDecls);
23   void *Mem = C.Allocate(Size, alignof(DeclGroup));
24   new (Mem) DeclGroup(NumDecls, Decls);
25   return static_cast<DeclGroup*>(Mem);
26 }
27 
28 DeclGroup::DeclGroup(unsigned numdecls, Decl** decls) : NumDecls(numdecls) {
29   assert(numdecls > 0);
30   assert(decls);
31   std::uninitialized_copy(decls, decls + numdecls,
32                           getTrailingObjects<Decl *>());
33 }
34