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