clang/lib/AST/DeclGroup.cpp

   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 }