template<class T> void operator-(T) const;
public:
- ilist_iterator(pointer NP) : NodePtr(NP) {}
- ilist_iterator(reference NR) : NodePtr(&NR) {}
+ explicit ilist_iterator(pointer NP) : NodePtr(NP) {}
+ explicit ilist_iterator(reference NR) : NodePtr(&NR) {}
ilist_iterator() : NodePtr(nullptr) {}
// This is templated so that we can allow constructing a const iterator from
void reset(pointer NP) { NodePtr = NP; }
// Accessors...
- operator pointer() const {
+ explicit operator pointer() const {
return NodePtr;
}
pointer operator->() const { return &operator*(); }
// Comparison operators
- bool operator==(const ilist_iterator &RHS) const {
- return NodePtr == RHS.NodePtr;
+ template <class Y> bool operator==(const ilist_iterator<Y> &RHS) const {
+ return NodePtr == RHS.getNodePtrUnchecked();
}
- bool operator!=(const ilist_iterator &RHS) const {
- return NodePtr != RHS.NodePtr;
+ template <class Y> bool operator!=(const ilist_iterator<Y> &RHS) const {
+ return NodePtr != RHS.getNodePtrUnchecked();
}
// Increment and decrement operators...
merge(RightHalf, comp);
}
void sort() { sort(op_less); }
+
+ /// \brief Get the previous node, or \c nullptr for the list head.
+ NodeTy *getPrevNode(NodeTy &N) const {
+ auto I = N.getIterator();
+ if (I == begin())
+ return nullptr;
+ return &*std::prev(I);
+ }
+ /// \brief Get the previous node, or \c nullptr for the list head.
+ const NodeTy *getPrevNode(const NodeTy &N) const {
+ return getPrevNode(const_cast<NodeTy &>(N));
+ }
+
+ /// \brief Get the next node, or \c nullptr for the list tail.
+ NodeTy *getNextNode(NodeTy &N) const {
+ auto Next = std::next(N.getIterator());
+ if (Next == end())
+ return nullptr;
+ return &*Next;
+ }
+ /// \brief Get the next node, or \c nullptr for the list tail.
+ const NodeTy *getNextNode(const NodeTy &N) const {
+ return getNextNode(const_cast<NodeTy &>(N));
+ }
};