split compilers resolve_type into the three possibilities

cleaner code, though temporary it shifts some dirt
into the index method. up next

lib/risc/block_compiler.rb

@@ -21,7 +21,7 @@ module Risc
     # or then the methods arg or frame
     def slot_type_for(name)
       if @block.arguments_type.variable_index(name)
-        slot_def = [ :arguments]
+        slot_def = [:arguments]
       elsif @block.frame_type.variable_index(name)
         slot_def = [:frame]
       elsif @method.arguments_type.variable_index(name)
@@ -34,19 +34,17 @@ module Risc
       slot_def << name
     end
 
-    # resolve a symbol to a type. Allowed symbols are :frame , :receiver and arguments
-    # which return the respective types, otherwise nil
-    def resolve_type( name )
-      case name
-      when :frame
-        return @block.frame_type
-      when :arguments
-        return @block.arguments_type
-      when :receiver
-        return @block.self_type
-      else
-        return nil
-      end
+    # return the frame type, ie the blocks frame type
+    def frame_type
+      @block.frame_type
+    end
+    # return the frame type, ie the blocks arguments type
+    def arg_type
+      @block.arguments_type
+    end
+    # return the frame type, ie the blocks self_type
+    def receiver_type
+      @block.self_type
     end
 
   end

lib/risc/builder.rb

@@ -183,8 +183,12 @@ module Risc
     case object
     when :name
       type = Parfait.object_space.get_type_by_class_name( :Word )
-    when :frame , :arguments , :receiver
-      type = compiler.resolve_type(object)
+    when :frame
+      type = compiler.frame_type
+    when :arguments
+      type = compiler.arg_type
+    when :receiver
+      type = compiler.receiver_type
     when :message , :next_message , :caller
       type = Parfait.object_space.get_type_by_class_name(:Message)
     when Parfait::Object
@@ -207,7 +211,14 @@ module Risc
   # Third arg, compiler, is only needed to resolve receiver/arguments/frame
   def self.resolve_to_index(object , variable_name ,compiler = nil)
     return variable_name if variable_name.is_a?(Integer) or variable_name.is_a?(RegisterValue)
-    type = compiler.resolve_type( object) if compiler
+    case object
+    when :frame
+      type = compiler.frame_type
+    when :arguments
+      type = compiler.arg_type
+    when :receiver
+      type = compiler.receiver_type
+    end if compiler
     type = resolve_type(object , compiler) unless type
     #puts "TYPE #{type} obj:#{object} var:#{variable_name} comp:#{compiler}"
     index = type.variable_index(variable_name)

lib/risc/builtin/object.rb

@@ -63,7 +63,7 @@ module Risc
             message[:receiver] << space
           end
 
-          exit_label = Risc.label(compiler.source , "#{compiler.resolve_type(:receiver).object_class.name}.#{compiler.source.name}" )
+          exit_label = Risc.label(compiler.source , "#{compiler.receiver_type.object_class.name}.#{compiler.source.name}" )
           ret_tmp = compiler.use_reg(:Label)
           builder.build do
             add_load_constant("__init__ load return", exit_label , ret_tmp)

lib/risc/callable_compiler.rb

@@ -69,8 +69,12 @@ module Risc
     # scope related slots are resolved by the compiler by methood/block
     def slot_type( slot , type)
       case slot
-      when :frame , :arguments , :receiver
-        new_type = self.resolve_type(slot)
+      when :frame
+        new_type = self.frame_type
+      when :arguments
+        new_type = self.arg_type
+      when :receiver
+        new_type = self.receiver_type
       when Symbol
         new_type = type.type_for(slot)
         raise "Not found object #{slot}: in #{type}" unless new_type

lib/risc/method_compiler.rb

@@ -74,19 +74,18 @@ module Risc
       ret
     end
 
-    # resolve a symbol to a type. Allowed symbols are :frame , :receiver and arguments
-    # which return the respective types, otherwise nil
-    def resolve_type( name )
-      case name
-      when :frame
-        return @method.frame_type
-      when :arguments
-        return @method.arguments_type
-      when :receiver
-        return @method.self_type
-      else
-        return nil
-      end
+
+    # return the frame type, ie the method frame type
+    def frame_type
+      @method.frame_type
+    end
+    # return the frame type, ie the method arguments type
+    def arg_type
+      @method.arguments_type
+    end
+    # return the frame type, ie the method self_type
+    def receiver_type
+      @method.self_type
     end
 
     # convert the given mom instruction to_risc and then add it (see add_code)

lib/vool/basic_values.rb

@@ -70,7 +70,7 @@ module Vool
       @my_type = type
     end
     def slot_definition(compiler)
-      @my_type = compiler.resolve_type(:receiver)
+      @my_type = compiler.receiver_type
       Mom::SlotDefinition.new(:message , [:receiver])
     end
     def ct_type

lib/vool/send_statement.rb

@@ -72,7 +72,7 @@ module Vool
     # - Setting up the next message, with receiver, arguments, and (importantly) return address
     # - a CachedCall , or a SimpleCall, depending on wether the receiver type can be determined
     def to_mom( compiler )
-      @receiver = SelfExpression.new(compiler.resolve_type(:receiver)) if @receiver.is_a?(SelfExpression)
+      @receiver = SelfExpression.new(compiler.receiver_type) if @receiver.is_a?(SelfExpression)
       if(@receiver.ct_type)
         simple_call(compiler)
       else