Initial data commit

Task/Classes/Forth/classes-7.fth

@@ -0,0 +1,31 @@
+include FMS-SI.f
+
+:class foo   \ begin class foo definition
+ ivar x                   \ declare an instance variable named x
+ :m put ( n -- ) x ! ;m   \ a method/message definition
+ :m init: 10 self put ;m  \ the constructor method
+ :m print x ? ;m          \ a print method for x
+;class                    \ end class foo definition
+
+foo f1    \ instantiate a foo object, in the dictionary, named f1
+f1 print  \ 10   send the print message to object f1
+20 f1 put \ send a message with one parameter to the object
+f1 print \ 20
+
+
+: bar  \ bar is a normal Forth function definition
+  heap> foo  \ instantiate a nameless object in the heap
+  dup print
+  30 over put
+  dup print
+  <free ;  \ destroy the heap object
+
+: bar'  \ bar' is an alternative to bar that uses a local variable
+  heap> foo  {: f :}
+  f print
+  30 f put
+  f print
+  f <free ;
+
+bar  \ 10 30
+bar' \ 10 30