1 files changed, 15 insertions, 5 deletions

diff --git a/src/sptr.h b/src/sptr.h
index 0ea8bca..9a6a2d6 100644
--- a/src/sptr.h
+++ b/src/sptr.h
@@ -40,7 +40,7 @@ public:
                 (*pRefCnt) = 1;
         }
 
-        int32_t count()
+        int32_t count() const
         {
                 return *pRefCnt;
         }
@@ -65,7 +65,17 @@ public:
                 return *this;
         }
 
-        bool operator==( const SPtr<T> &src )
+        const SPtr<T> operator=( const SPtr<T> &src ) const
+        {
+                decCount();
+                pRefCnt = src.pRefCnt;
+                pData = src.pData;
+                (*pRefCnt) += 1;
+
+                return *this;
+        }
+
+        bool operator==( const SPtr<T> &src ) const
         {
                 return pData == src.pData;
         }
@@ -81,7 +91,7 @@ public:
         }
 
 private:
-        void decCount()
+        void decCount() const
         {
                 if( pRefCnt )
                 {
@@ -97,8 +107,8 @@ private:
                 }
         }
 
-        int32_t *pRefCnt;
-        T *pData;
+        mutable int32_t *pRefCnt;
+        mutable T *pData;
 };
 
 template< typename Tb, typename Ta > SPtr<Tb> SPtrCast( SPtr<Ta> src )