add named references

object may determine own reference by
defining sof_reference_name
(some tests but surely more needed)

lib/sof/members.rb

@@ -15,6 +15,7 @@ module Sof
     def initialize root
       @root = root
       @counter = 1
+      @references = []
       @objects = {}
       add_object( root , 0)
       collect_level(0 , [root])
@@ -34,10 +35,21 @@ module Sof
         end
         # and only one Occurence for each object, create a reference for the second occurence
         unless occurence.referenced
-          puts "referencing #{@counter} #{occurence.object.name}, at level #{level}/#{occurence.level} " if @counter == 23
+#          puts "referencing #{@counter} #{occurence.object.name}, at level #{level}/#{occurence.level} " if @counter == 23
 #          puts "referencing #{@counter} #{occurence.object.name}, at level #{level}/#{occurence.level} " if @counter == 19
-          occurence.set_reference(@counter)
-          @counter = @counter + 1
+          if object.respond_to? :sof_reference_name
+            reference = object.sof_reference_name
+            reference = reference.to_s.gsub(/\d|\s|\W/ , "") #remove non alpha chars
+            if( @references.include?(reference) or reference.empty?)
+              reference = "#{reference}#{@counter}"
+              @counter = @counter + 1
+            end
+          else
+            reference = @counter.to_s
+            @counter = @counter + 1
+          end
+          occurence.set_reference(reference)
+          @references << reference
         end
         return nil
       end

test/test_all.rb

@@ -3,3 +3,4 @@ require_relative "test_object"
 require_relative "test_ext"
 require_relative "test_refs"
 require_relative "test_super"
+require_relative "test_names"

test/test_names.rb

@@ -0,0 +1,29 @@
+require_relative "helper"
+class NamedRef < ObjectWithAttributes
+  def initialize name
+    super()
+    @name = name
+  end
+  def sof_reference_name
+    @name.to_s
+  end
+end
+
+class NamedTest < MiniTest::Test
+  include Checker
+
+  def test_object_one
+    object = NamedRef.new("one")
+    object.extra = [object]
+    @out = [ {:one => object} , object ]
+    check "- {:one => ->one}\n- &one NamedRef(:name => 'one', :number => 1234, :extra => [->one])"
+  end
+  def test_object_two
+    object = NamedRef.new("one")
+    object2 = NamedRef.new("two")
+    object.extra = [object2]
+    @out = [ {:one => object} , object2 ]
+    check "- - :one => NamedRef(:name => 'one', :number => 1234, :extra => [->two])\n- &two NamedRef(:name => 'two', :number => 1234)"
+  end
+
+end