Changeset 1418:afaa773d0ad0 in lemon-0.x

Timestamp:

05/14/05 19:32:11 (20 years ago)

Author:

Balazs Dezso

Branch:

default

Phase:

public

Convert:

svn:c9d7d8f5-90d6-0310-b91f-818b3a526b0e/lemon/trunk@1888

Message:

Handling smarter the references
It's used by the lemon IO and proposed by the adaptors.

Files:

• doc/adaptor_references.dox (added)
• src/lemon/utility.h (modified) (1 diff)

src/lemon/utility.h

@@ -108 +108 @@
   struct lazy_disable_if : public lazy_disable_if_c<Cond::value, T> {};
 
+  // smart referencing
+
+  template <typename _Type, typename Enable = void>
+  struct SmartReference {
+    typedef _Type& Type;
+  };
+  
+  template <typename _Type>
+  struct SmartReference<
+    _Type, 
+    typename enable_if<typename _Type::NeedCopy, void>::type
+  > {
+    typedef _Type Type;
+  };
+
+  template <typename _Type, typename Enable = void>
+  struct SmartConstReference {
+    typedef const _Type& Type;
+  };
+  
+  template <typename _Type>
+  struct SmartConstReference<
+    _Type, 
+    typename enable_if<typename _Type::NeedCopy, void>::type
+  > {
+    typedef const _Type Type;
+  };
+
+  template <typename _Type, typename Enable = void>
+  struct SmartParameter {
+    typedef _Type& Type;
+  };
+  
+  template <typename _Type>
+  struct SmartParameter<
+    _Type, 
+    typename enable_if<typename _Type::NeedCopy, void>::type
+  > {
+    typedef const _Type& Type;
+  };
+
 } // namespace lemon