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0a0e68a7ea
This looks dangerous, but isn't because the sentinel is accessed in special way only, namely the Next and Prev fields of it, and these are guaranteed to exist. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65626 91177308-0d34-0410-b5e6-96231b3b80d8
48 lines
1.4 KiB
C++
48 lines
1.4 KiB
C++
//==-- llvm/ADT/ilist_node.h - Intrusive Linked List Helper ------*- 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 ilist_node class template, which is a convenient
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// base class for creating classes that can be used with ilists.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_ADT_ILIST_NODE_H
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#define LLVM_ADT_ILIST_NODE_H
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namespace llvm {
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template<typename NodeTy>
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struct ilist_nextprev_traits;
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template<typename NodeTy>
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struct ilist_traits;
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/// ilist_node - Base class that provides next/prev services for nodes
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/// that use ilist_nextprev_traits or ilist_default_traits.
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///
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template<typename NodeTy>
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class ilist_node {
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private:
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friend struct ilist_nextprev_traits<NodeTy>;
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NodeTy *Prev, *Next;
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NodeTy *getPrev() { return Prev; }
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NodeTy *getNext() { return Next; }
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const NodeTy *getPrev() const { return Prev; }
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const NodeTy *getNext() const { return Next; }
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void setPrev(NodeTy *N) { Prev = N; }
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void setNext(NodeTy *N) { Next = N; }
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protected:
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ilist_node() : Prev(0), Next(0) {}
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friend struct ilist_traits<NodeTy>;
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};
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} // End llvm namespace
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#endif
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