fixing and testing operators

lib/interpreter/interpreter.rb

@@ -184,7 +184,7 @@ module Interpreter
       rr = @instruction.right
       right = get_register(rr)
       case @instruction.operator.to_s
-      when "add"
+      when "+"
         result = left + right
       when "/"
         result = left / right
@@ -198,7 +198,7 @@ module Interpreter
         raise "unimplemented  '#{@instruction.operator}' #{@instruction}"
       end
       puts "#{@instruction} == #{result}"
-      right = set_register(rr , result)
+      right = set_register(@instruction.left , result)
       true
     end
   end

lib/parfait/variable.rb

@@ -4,7 +4,7 @@ module Parfait
     def initialize type , name , value = nil
       raise "not type #{type}" unless Virtual.machine.space.get_class_by_name(type)
       self.type , self.name , self.value = type , name , value
-      self.value = 0 if self.type == :int and value == nil
+      self.value = 0 if self.type == :Integer and value == nil
       raise "must give name for variable" unless name
     end
     attributes [:type , :name, :value]

lib/phisol/compiler/field_access.rb

@@ -11,7 +11,7 @@ module Phisol
       when :self
         index = @clazz.object_layout.variable_index(field_name)
         raise "field access, but no such field:#{field_name} for class #{@clazz.name}" unless index
-        value = use_reg(:int) #TODO, need types in layout
+        value = use_reg(:Integer) #TODO, need types in layout
         move = Register.get_slot(statement, :self , index , value )
         @method.source.add_code move
         return value

lib/phisol/compiler/operator_value.rb

@@ -4,23 +4,15 @@ module Phisol
     def on_operator_value statement
       puts "operator #{statement.inspect}"
       operator , left_e , right_e = *statement
-      left_slot = process(left_e)
-      right_slot = process(right_e)
-      puts "left #{left_slot}"
-      puts "right #{right_slot}"
-      tmp1 = use_reg :int
-      tmp2 = use_reg :int
-      get = Register.get_slot_to(statement , left_slot , tmp1 )
-      get2 = Register.get_slot_to(statement , right_slot , tmp2 )
-      puts "GET #{get}"
-      puts "GET2 #{get2}"
-      @method.source.add_code get
-      @method.source.add_code get2
-
-      @method.source.add_code Register::OperatorInstruction.new(statement,operator, tmp1,tmp2)
-      release_reg tmp2
-      release_reg tmp1
-      Virtual::Return.new(:int )
+      # left and right must be expressions. Expressions return a register when compiled
+      left_reg = process(left_e)
+      right_reg = process(right_e)
+      raise "Not register #{left_reg}" unless left_reg.is_a?(Register::RegisterValue)
+      raise "Not register #{right_reg}" unless right_reg.is_a?(Register::RegisterValue)
+      puts "left #{left_reg}"
+      puts "right #{right_reg}"
+      @method.source.add_code Register::OperatorInstruction.new(statement,operator,left_reg,right_reg)
+      return left_reg # though this has wrong value attached
     end
 
     def on_assignment statement

lib/register/builtin/kernel.rb

@@ -49,15 +49,17 @@ module Register
         # This relies on linux to save and restore all registers
         #
         def save_message(function)
-          function.source.add_code RegisterTransfer.new(function, Register.message_reg , :r8 )
+          r8 = RegisterValue.new( :r8 , :Message)
+          function.source.add_code RegisterTransfer.new(function, Register.message_reg , r8 )
         end
 
         def restore_message(function)
+          r8 = RegisterValue.new( :r8 , :Message)
           return_tmp = Register.tmp_reg function.source.return_type
           # get the sys return out of the way
           function.source.add_code RegisterTransfer.new(function, Register.message_reg , return_tmp )
           # load the stored message into the base RegisterMachine
-          function.source.add_code RegisterTransfer.new(function, :r8 , Register.message_reg )
+          function.source.add_code RegisterTransfer.new(function, r8 , Register.message_reg )
           # save the return value into the message
           function.source.add_code Register.set_slot( function, return_tmp , :message , :return_value )
           # and "unroll" self and frame

lib/register/instruction.rb

@@ -30,12 +30,6 @@ module Register
     def assigns
       raise "abstract called for #{self.class}"
     end
-
-    # wrap symbols into regsiter reference if needed
-    def wrap_register reg , type
-      return reg if reg.is_a? RegisterValue
-      RegisterValue.new(reg , type)
-    end
   end
 
 end

lib/register/instructions/register_transfer.rb

@@ -18,8 +18,10 @@ module Register
     # Note: this may be reversed from some assembler notations (also arm)
     def initialize source , from , to
       super(source)
-      @from = wrap_register(from,:int)
-      @to = wrap_register(to,:int)
+      @from = from
+      @to = to
+      raise "Fix me #{from}" unless from.is_a? RegisterValue
+      raise "Fix me #{to}" unless to.is_a? RegisterValue
     end
     attr_reader :from, :to
 

lib/register/register_value.rb

@@ -10,6 +10,7 @@ module Register
       raise "wrong type for register init #{r}" unless r.is_a? Symbol
       raise "double r #{r}" if r.to_s[0,1] == "rr"
       raise "not reg #{r}" unless self.class.look_like_reg r
+      raise "Legacy type error, should be class" if (type == :int) or (type == :ref)
       @type = type
       @symbol = r
       @value = value
@@ -39,10 +40,10 @@ module Register
     end
 
     #helper method to calculate with register symbols
-    def next_reg_use type
+    def next_reg_use type , value = nil
       int = @symbol[1,3].to_i
       sym = "r#{int + 1}".to_sym
-      RegisterValue.new( sym , type)
+      RegisterValue.new( sym , type, value)
     end
 
     def sof_reference_name

test/compiler/expressions/test_ops.rb

@@ -0,0 +1,45 @@
+require_relative "compiler_helper"
+
+module Virtual
+  class TestOps < MiniTest::Test
+    include CompilerHelper
+
+    def setup
+      Virtual.machine.boot
+      @root = :operator_value
+      @output = Register::RegisterValue
+    end
+
+    def operators
+      ["+" , "-" , "*" , "/" , "=="]
+    end
+    def test_ints
+      operators.each do |op|
+        @string_input = '2 + 3'.sub("+" , op)
+        check
+      end
+    end
+    def test_local_int
+      Virtual.machine.space.get_main.ensure_local(:bar , :Integer)
+      @string_input    = 'bar  + 3'
+      check
+    end
+    def test_int_local
+      Virtual.machine.space.get_main.ensure_local(:bar , :Integer)
+      @string_input    = '3  + bar'
+      check
+    end
+
+    def test_field_int
+      Virtual.machine.space.get_class_by_name(:Object).object_layout.add_instance_variable(:bro)
+      @string_input = "self.bro + 3"
+      check
+    end
+
+    def test_int_field
+      Virtual.machine.space.get_class_by_name(:Object).object_layout.add_instance_variable(:bro)
+      @string_input = "3 + self.bro"
+      check
+    end
+  end
+end