more semi random code, a checkpoint

lib/vm/function_call.rb

@@ -0,0 +1,33 @@
+module Vm
+
+  # name and args , return
+
+  class FunctionCall < Value
+
+    def initialize(name , args)
+      @name = name
+      @args = args
+      @function = nil
+    end
+    attr_reader :name , :args , :function
+    
+    def compile context
+      @function = context.program.get_function @name
+      if @function
+        raise "error #{self}" unless function.arity != @args.length
+      else
+        @function = context.program.get_or_create_function @name
+      end
+      args.each_with_index do |arg , index|
+        arg.load
+        arg.compile context
+      end
+      #puts "funcall #{self.inspect}"
+      self.call
+    end
+    
+    def call
+      Machine.instance.function_call self
+    end
+  end
+end