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Change the tag on this iterator to bidir and implement enough operators to make it true.

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It ought to be possible to make this truly random access if anyone cares enough.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@203060 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Owen Anderson 2014-03-06 02:02:43 +00:00
parent 907423f7db
commit aa3d8b2d6c
1 changed files with 11 additions and 1 deletions
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12
include/llvm/IR/Metadata.h
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@ -210,7 +210,7 @@ class NamedMDNode : public ilist_node<NamedMDNode> {
template<class T1, class T2>
class op_iterator_impl :
public std::iterator<std::random_access_iterator_tag, T2> {
public std::iterator<std::bidirectional_iterator_tag, T2> {
const NamedMDNode *Node;
unsigned Idx;
op_iterator_impl(const NamedMDNode *N, unsigned i) : Node(N), Idx(i) { }
@ -232,6 +232,16 @@ class NamedMDNode : public ilist_node<NamedMDNode> {
operator++();
return tmp;
}
op_iterator_impl &operator--() {
--Idx;
return *this;
}
op_iterator_impl operator--(int) {
op_iterator_impl tmp(*this);
operator--();
return tmp;
}
op_iterator_impl &operator=(const op_iterator_impl &o) {
Node = o.Node;
Idx = o.Idx;