зеркало из https://github.com/microsoft/clang-1.git
60 строки
1.7 KiB
C++
60 строки
1.7 KiB
C++
//===--- DeclGroup.cpp - Classes for representing groups of Decls -*- C++ -*-==//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines the DeclGroup, DeclGroupRef, and OwningDeclGroup classes.
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//
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//===----------------------------------------------------------------------===//
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#include "clang/AST/DeclGroup.h"
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#include "clang/AST/Decl.h"
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#include "clang/AST/ASTContext.h"
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#include "llvm/Support/Allocator.h"
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using namespace clang;
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DeclGroup* DeclGroup::Create(ASTContext& C, unsigned numdecls, Decl** decls) {
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unsigned size = sizeof(DeclGroup) + sizeof(Decl*) * numdecls;
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unsigned alignment = llvm::AlignOf<DeclGroup>::Alignment;
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void* mem = C.getAllocator().Allocate(size, alignment);
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new (mem) DeclGroup(numdecls, decls);
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return static_cast<DeclGroup*>(mem);
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}
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DeclGroup::DeclGroup(unsigned numdecls, Decl** decls) {
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assert (numdecls > 0);
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assert (decls);
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memcpy(this+1, decls, numdecls * sizeof(*decls));
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}
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void DeclGroup::Destroy(ASTContext& C) {
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Decl** Decls = (Decl**) this + 1;
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for (unsigned i = 0; i < NumDecls; ++i)
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Decls[i]->Destroy(C);
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this->~DeclGroup();
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C.getAllocator().Deallocate((void*) this);
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}
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DeclGroupOwningRef::~DeclGroupOwningRef() {
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assert (Raw == 0 && "Destroy method not called.");
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}
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void DeclGroupOwningRef::Destroy(ASTContext& C) {
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if (!Raw)
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return;
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if (getKind() == DeclKind)
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reinterpret_cast<Decl*>(Raw)->Destroy(C);
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else
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reinterpret_cast<DeclGroup*>(Raw & ~Mask)->Destroy(C);
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Raw = 0;
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}
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