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-rw-r--r--klm/util/probing_hash_table.hh23
1 files changed, 22 insertions, 1 deletions
diff --git a/klm/util/probing_hash_table.hh b/klm/util/probing_hash_table.hh
index 57866ff9..51a2944d 100644
--- a/klm/util/probing_hash_table.hh
+++ b/klm/util/probing_hash_table.hh
@@ -109,9 +109,20 @@ template <class EntryT, class HashT, class EqualT = std::equal_to<typename Entry
if (equal_(got, key)) { out = i; return true; }
if (equal_(got, invalid_)) return false;
if (++i == end_) i = begin_;
- }
+ }
+ }
+
+ // Like UnsafeMutableFind, but the key must be there.
+ template <class Key> MutableIterator UnsafeMutableMustFind(const Key key) {
+ for (MutableIterator i(begin_ + (hash_(key) % buckets_));;) {
+ Key got(i->GetKey());
+ if (equal_(got, key)) { return i; }
+ assert(!equal_(got, invalid_));
+ if (++i == end_) i = begin_;
+ }
}
+
template <class Key> bool Find(const Key key, ConstIterator &out) const {
#ifdef DEBUG
assert(initialized_);
@@ -124,6 +135,16 @@ template <class EntryT, class HashT, class EqualT = std::equal_to<typename Entry
}
}
+ // Like Find but we're sure it must be there.
+ template <class Key> ConstIterator MustFind(const Key key) const {
+ for (ConstIterator i(begin_ + (hash_(key) % buckets_));;) {
+ Key got(i->GetKey());
+ if (equal_(got, key)) { return i; }
+ assert(!equal_(got, invalid_));
+ if (++i == end_) i = begin_;
+ }
+ }
+
void Clear() {
Entry invalid;
invalid.SetKey(invalid_);