remove unused attributes() boilerplate

lib/boot/boot_class.rb

@@ -13,9 +13,6 @@ module Boot
       @meta_class = MetaClass.new(self)
     end
     attr_reader :name , :methods , :meta_class , :context , :super_class_name
-    def attributes
-      [:name , :super_class_name]
-    end
     def add_method_definition method
       raise "not a method #{method.class} #{method.inspect}" unless method.is_a? Virtual::MethodDefinition
       raise "syserr " unless method.name.is_a? Symbol

lib/boot/meta_class.rb

@@ -17,10 +17,6 @@ module Boot
       @me_self = object
     end
 
-    def attributes
-      []
-    end
-
     # in a non-booting version this should map to _add_singleton_method
     def add_function function
       raise "not a function #{function}" unless function.is_a? Virtual::Function

lib/sof/volotile.rb

@@ -1,6 +1,7 @@
 module Sof
   class Volotile
     @@mapping = {
+      Virtual::Block =>  [:method],
       Virtual::MethodDefinition =>  [:current]
     }
     def self.attributes clazz

lib/virtual/block.rb

@@ -19,10 +19,6 @@ module Virtual
       @codes = []
     end
 
-    def attributes
-      [:name  , :codes , :branch]
-    end
-
     attr_reader :name , :codes , :method
     attr_accessor :branch
     

lib/virtual/constants.rb

@@ -3,13 +3,10 @@ module Virtual
   class Constant < ::Virtual::Value
   end
   class TrueValue < Constant
-    def attributes ; [] ; end
   end
   class FalseValue < Constant
-    def attributes ; [] ; end
   end
   class NilValue < Constant
-    def attributes ; [] ; end
   end
 
   # another abstract "marker" class (so we can check for it)
@@ -22,12 +19,6 @@ module Virtual
       @integer = int
     end
     attr_reader :integer
-    def attributes
-      [:integer]
-    end
-    def inspect
-      self.class.name + ".new(#{@integer})"
-    end
     def type
       Virtual::Integer
     end
@@ -39,20 +30,14 @@ module Virtual
   # Mainly because that works an i aint no elf expert.
   
   class StringConstant < ObjectConstant
-    attr_reader :string
-    def attributes 
-      [:string]
-    end
     def initialize str
       @string = str
     end
+    attr_reader :string
 
     def result= value
       class_for(MoveInstruction).new(value , self , :opcode => :mov)
     end
-    def inspect
-      self.class.name + ".new('#{@string}')"
-    end
   end
   
 end

lib/virtual/instruction.rb

@@ -27,9 +27,6 @@ module Virtual
       end
       return true
     end
-    def attributes
-      []
-    end
   end
 
   module Named
@@ -37,9 +34,6 @@ module Virtual
       @name = name
     end
     attr_reader :name
-    def attributes
-      [:name ]
-    end
   end
 
   # the first instruction we need is to stop. Off course in a real machine this would be a syscall, but that is just 
@@ -61,9 +55,6 @@ module Virtual
       @to = to
     end
     attr_reader :to
-    def attributes
-      [:to]
-    end
   end
 
   # implicit means there is no explcit test involved.
@@ -87,9 +78,6 @@ module Virtual
       @args = args
     end
     attr_reader :name , :args
-    def attributes
-      [:name , :args ]
-    end
   end
 
   class FrameSet < Instruction
@@ -98,9 +86,6 @@ module Virtual
       @value = val
     end
     attr_reader :name , :value
-    def attributes
-      [:name , :value]
-    end
   end
 
   class MessageSet < Instruction
@@ -109,9 +94,6 @@ module Virtual
       @value = val
     end
     attr_reader :name , :value
-    def attributes
-      [:name , :value] 
-    end
   end
 
   class LoadSelf < Instruction
@@ -119,9 +101,6 @@ module Virtual
       @value = val
     end
     attr_reader  :value
-    def attributes
-      [:value]
-    end
   end
 
   class ObjectGet < Instruction

lib/virtual/object.rb

@@ -41,9 +41,6 @@ module Virtual
     def initialize members
       @members = members
     end
-    def attributes
-      super << :members
-    end
   end
 
   class Class < Object

lib/virtual/type.rb

@@ -33,9 +33,7 @@ module Virtual
       @clazz = clazz
     end
     attr_accessor :clazz
-    def attributes
-      [:clazz]
-    end
+
     def at_index block , left , right
       block.ldr( self , left , right )
       self
@@ -48,9 +46,6 @@ module Virtual
   class Mystery < Type
     def initialize 
     end
-    def attributes
-      []
-    end
     def as type
       type.new
     end

lib/virtual/value.rb

@@ -6,28 +6,27 @@ module Virtual
   # Values must really be Constants or Variables, ie have a storage space
 
   class Value
-    def == other
-      other.class == self.class
-    end
     def type
       raise "abstract called for #{self.class}"
     end
-    def attributes
-      raise "abstract called for #{self.class}"
-    end
     def == other
       return false unless other.class == self.class 
-      attributes.each do |a|
-        left = send(a)
-        right = other.send(a)
+      Sof::Util.attributes(self).each do |a|
+        begin
+          left = send(a)
+        rescue NoMethodError
+          next  # not using instance variables that are not defined as attr_readers for equality
+        end
+        begin
+          right = other.send(a)
+        rescue NoMethodError
+          return false
+        end
         return false unless left.class == right.class 
         return false unless left == right
       end
       return true
     end
-    def inspect
-      self.class.name + ".new(" + attributes.collect{|a| send(a).inspect }.join(",")+ ")"
-    end
     private
     def initialize
     end
@@ -40,9 +39,6 @@ module Virtual
       @type = type
     end
     attr_accessor :name , :type
-    def attributes
-      [:name , :type]
-    end
   end
   # The subclasses are not strictly speaking neccessary at this def point
   # i just don't want to destroy the information for later optimizations
@@ -52,17 +48,11 @@ module Virtual
     def initialize type
       super(:return , type)
     end
-    def attributes
-      [:type]
-    end
   end
   class Self < Variable
     def initialize type
       super(:self , type)
     end
-    def attributes
-      [:type]
-    end
   end
   class Argument < Variable
   end
@@ -70,4 +60,4 @@ module Virtual
   end
   class Temp < Variable
   end
-end
+end