YT-18571: Rename TCaseInsensitiveStringEqualityComparer -> TCaseInsensitiveStringEqualComparer, add TCaseInsensitiveStringLessComparer

commit_hash:2dbe3c3cf419a5310e7bf45d161f839e99040788

2 files changed, 14 insertions, 2 deletions

diff --git a/library/cpp/yt/string/string.cpp b/library/cpp/yt/string/string.cpp
index 7d58d474382..a346219144c 100644
--- a/library/cpp/yt/string/string.cpp
+++ b/library/cpp/yt/string/string.cpp
@@ -322,11 +322,16 @@ size_t TCaseInsensitiveStringHasher::operator()(TStringBuf arg) const
     }
 }
 
-bool TCaseInsensitiveStringEqualityComparer::operator()(TStringBuf lhs, TStringBuf rhs) const
+bool TCaseInsensitiveStringEqualComparer::operator()(TStringBuf lhs, TStringBuf rhs) const
 {
     return AsciiEqualsIgnoreCase(lhs, rhs);
 }
 
+bool TCaseInsensitiveStringLessComparer::operator()(TStringBuf lhs, TStringBuf rhs) const
+{
+    return AsciiCompareIgnoreCase(lhs, rhs) < 0;
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 
 bool TryParseBool(TStringBuf value, bool* result)
diff --git a/library/cpp/yt/string/string.h b/library/cpp/yt/string/string.h
index a0e1d96cd09..9e521204838 100644
--- a/library/cpp/yt/string/string.h
+++ b/library/cpp/yt/string/string.h
@@ -168,8 +168,15 @@ struct TCaseInsensitiveStringHasher
     size_t operator()(TStringBuf arg) const;
 };
 
-struct TCaseInsensitiveStringEqualityComparer
+struct TCaseInsensitiveStringEqualComparer
 {
+    using is_transparent = void;
+    bool operator()(TStringBuf lhs, TStringBuf rhs) const;
+};
+
+struct TCaseInsensitiveStringLessComparer
+{
+    using is_transparent = void;
     bool operator()(TStringBuf lhs, TStringBuf rhs) const;
 };