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      1 //===--- DeclGroup.cpp - Classes for representing groups of Decls -*- C++ -*-==//
      2 //
      3 //                     The LLVM Compiler Infrastructure
      4 //
      5 // This file is distributed under the University of Illinois Open Source
      6 // License. See LICENSE.TXT for details.
      7 //
      8 //===----------------------------------------------------------------------===//
      9 //
     10 //  This file defines the DeclGroup and DeclGroupRef classes.
     11 //
     12 //===----------------------------------------------------------------------===//
     13 
     14 #include "clang/AST/DeclGroup.h"
     15 #include "clang/AST/ASTContext.h"
     16 #include "clang/AST/Decl.h"
     17 #include "llvm/Support/Allocator.h"
     18 using namespace clang;
     19 
     20 DeclGroup* DeclGroup::Create(ASTContext &C, Decl **Decls, unsigned NumDecls) {
     21   assert(NumDecls > 1 && "Invalid DeclGroup");
     22   unsigned Size = sizeof(DeclGroup) + sizeof(Decl*) * NumDecls;
     23   void* Mem = C.Allocate(Size, llvm::AlignOf<DeclGroup>::Alignment);
     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   memcpy(this+1, decls, numdecls * sizeof(*decls));
     32 }
     33