clang  9.0.0svn
DeclGroup.cpp
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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 }
Defines the clang::ASTContext interface.
Decl - This represents one declaration (or definition), e.g.
Definition: DeclBase.h:86
Holds long-lived AST nodes (such as types and decls) that can be referred to throughout the semantic ...
Definition: ASTContext.h:154
static DeclGroup * Create(ASTContext &C, Decl **Decls, unsigned NumDecls)
Definition: DeclGroup.cpp:20
void * Allocate(size_t Size, unsigned Align=8) const
Definition: ASTContext.h:668
Dataflow Directional Tag Classes.