Changed justin's email in README because mit.edu address is out of date.

[selectricity] / lib / rubyvote / election.rb

diff --git a/lib/rubyvote/election.rb b/lib/rubyvote/election.rb
index 3d816a89212e572a2c2165a2180908ab20fc7198..3655a034e7575d7be3541ab49e1be12a80fb0c17 100644 (file)
--- a/lib/rubyvote/election.rb
+++ b/lib/rubyvote/election.rb
@@ -42,7 +42,11 @@ class ElectionVote
     if votes
       if votes.instance_of?( Array )
         votes.each do |vote|
-          self.tally_vote(vote) if self.verify_vote(vote)
+          if self.verify_vote(vote)
+            self.tally_vote(vote)
+          else
+            raise InvalidVoteError.new("Invalid vote object", vote)
+          end
         end
       else
         raise ElectionError, "Votes must be in the form of an array.", caller
@@ -62,10 +66,6 @@ class ElectionVote
     self.verify_vote(vote)
   end
 
-  def filter_out(winner)
-    @candidates.delete_if {|x| winner.winners.include?(x)}
-  end
-
 end
 
 class PluralityVote < ElectionVote
@@ -75,7 +75,7 @@ class PluralityVote < ElectionVote
   
   protected
   def verify_vote(vote=nil)
-    vote.instance_of?( String )
+    vote ? true : false
   end
 
   def tally_vote(candidate)
@@ -114,6 +114,7 @@ end
 
 class ElectionResult
   attr_reader :winners
+  attr_reader :election
 
   def initialize(voteobj=nil)
     unless voteobj and voteobj.kind_of?( ElectionVote )
@@ -129,14 +130,15 @@ class ElectionResult
   end
 
   def winner?
-    @winners.length > 0
+    @winners.length > 0 and not @winners[0].nil?
   end
-
+  
 end
 
 class PluralityResult < ElectionResult
   attr_reader :ranked_candidates
-
+  attr_reader :points
+  
   def initialize(voteobj=nil)
     super(voteobj)
 
@@ -147,6 +149,8 @@ class PluralityResult < ElectionResult
       b[1] <=> a[1]
     end.collect {|a| a[0]}
     
+    @points = @election.votes
+    
     # winners are anyone who has the same number of votes as the
     # first person
     @winners = @ranked_candidates.find_all do |i|
@@ -163,3 +167,10 @@ end
 class ElectionError < ArgumentError
 end
 
+class InvalidVoteError < ElectionError
+  attr_accessor :voteobj
+  def initialize(msg=nil, voteobj=nil)
+    super(msg)
+    @voteobj=voteobj
+  end
+end