From afe2ef6e393e2c85295e3820bc47b72ff7680bad Mon Sep 17 00:00:00 2001
From: Avi Kivity <avi@cloudius-systems.com>
Date: Wed, 1 Apr 2015 20:57:37 +0300
Subject: [PATCH] db: implement abstract_type::equals()

At present, no overloads are needed because collections are interned, and
all other implemented data types are singletons.  Tuples and user defined
types will need an overload.
---
 types.hh | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/types.hh b/types.hh
index df8b06ddeb..7a33d06ede 100644
--- a/types.hh
+++ b/types.hh
@@ -196,7 +196,13 @@ public:
     bool is_value_compatible_with(abstract_type& other) {
         return is_value_compatible_with_internal(*other.underlying_type());
     }
+    bool equals(const shared_ptr<abstract_type>& other) const {
+        return equals(*other);
+    }
 protected:
+    virtual bool equals(const abstract_type& other) const {
+        return this == &other;
+    }
     /**
      * Needed to handle ReversedType in value-compatibility checks.  Subclasses should implement this instead of
      * is_value_compatible_with().