void setNext(NodeTy *N) { Next = N; }
protected:
ilist_node() : Next(0) {}
+
+public:
+ /// @name Adjacent Node Accessors
+ /// @{
+
+ /// \brief Get the previous node, or 0 for the list head.
+ NodeTy *getPrevNode() {
+ NodeTy *Prev = this->getPrev();
+
+ // Check for sentinel.
+ if (!Prev->getNext())
+ return 0;
+
+ return Prev;
+ }
+
+ /// \brief Get the previous node, or 0 for the list head.
+ const NodeTy *getPrevNode() const {
+ const NodeTy *Prev = this->getPrev();
+
+ // Check for sentinel.
+ if (!Prev->getNext())
+ return 0;
+
+ return Prev;
+ }
+
+ /// \brief Get the next node, or 0 for the list tail.
+ NodeTy *getNextNode() {
+ NodeTy *Next = getNext();
+
+ // Check for sentinel.
+ if (!Next->getNext())
+ return 0;
+
+ return Next;
+ }
+
+ /// \brief Get the next node, or 0 for the list tail.
+ const NodeTy *getNextNode() const {
+ const NodeTy *Next = getNext();
+
+ // Check for sentinel.
+ if (!Next->getNext())
+ return 0;
+
+ return Next;
+ }
+
+ /// @}
};
} // End llvm namespace