Changeset 204

Timestamp:

06/07/05 05:06:13 (3 years ago)

Author:

ged

Message:

- Added an ::abstract code-gen function for virtual methods.

Files:

• branches/simplest-thing/lib/fm/gameobject.rb (modified) (1 diff)

branches/simplest-thing/lib/fm/gameobject.rb

@@ -135 +135 @@
         else
             return 0
+        end
+    end
+
+
+    ### Define a method that will raise a NotImplementedError when
+    ### called. This enforces implementation of a particular interface in
+    ### subclasses of the defining class.
+    def self::abstract( *syms )
+        syms.each do |meth|
+            define_method( meth ) {
+                raise NotImplementedError,
+                "No implementation for \#%s provided by %s" %
+                [ meth, self.class.name ]
+            }
         end
     end