From 25170b32eb7b0bf2c51e609392b6893de5fc94a4 Mon Sep 17 00:00:00 2001
From: Justin Viiret <justin.viiret@intel.com>
Date: Thu, 10 Aug 2017 15:12:28 +1000
Subject: [PATCH] ue2_literal: better hash function

---
 src/util/ue2string.cpp | 5 +++++
 src/util/ue2string.h   | 4 +++-
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/util/ue2string.cpp b/src/util/ue2string.cpp
index b9cb67f4..40076056 100644
--- a/src/util/ue2string.cpp
+++ b/src/util/ue2string.cpp
@@ -34,6 +34,7 @@
 
 #include "charreach.h"
 #include "compare.h"
+#include "hash_dynamic_bitset.h"
 
 #include <algorithm>
 #include <cstring>
@@ -325,6 +326,10 @@ bool ue2_literal::any_nocase() const {
     return nocase.any();
 }
 
+size_t ue2_literal::hash() const {
+    return hash_all(s, hash_dynamic_bitset()(nocase));
+}
+
 void make_nocase(ue2_literal *lit) {
     ue2_literal rv;
 
diff --git a/src/util/ue2string.h b/src/util/ue2string.h
index 703faa2f..3519207c 100644
--- a/src/util/ue2string.h
+++ b/src/util/ue2string.h
@@ -205,6 +205,8 @@ public:
         nocase.swap(other.nocase);
     }
 
+    size_t hash() const;
+
 private:
     friend const_iterator;
     std::string s;
@@ -321,7 +323,7 @@ struct hash<ue2::ue2_literal::elem> {
 template<>
 struct hash<ue2::ue2_literal> {
     size_t operator()(const ue2::ue2_literal &lit) const {
-        return ue2::ue2_hasher()(lit);
+        return lit.hash();
     }
 };