lib/hiccup/inferable/guesser.rb in hiccup-0.5.14 vs lib/hiccup/inferable/guesser.rb in hiccup-0.5.15

@@ -1,45 +1,45 @@
 require 'hiccup/inferable/scorer'
 
 module Hiccup
   module Inferable
     class Guesser
-      
+
       def initialize(klass, options={})
         @klass = klass
         @verbose = options.fetch(:verbose, false)
         @allow_skips = options.fetch(:allow_skips, true)
         @max_complexity = options.fetch(:max_complexity, 3)
       end
-      
+
       attr_reader :max_complexity
-      
+
       def allow_skips?
         @allow_skips
       end
-      
-      
-      
+
+
+
       def generate_guesses(dates)
         @start_date = dates.first
         @end_date = dates.last
         [].tap do |guesses|
           guesses.concat generate_yearly_guesses(dates)
           guesses.concat generate_monthly_guesses(dates)
           guesses.concat generate_weekly_guesses(dates)
         end
       end
-      
+
       def generate_yearly_guesses(dates)
         histogram_of_patterns = dates.to_histogram do |date|
           [date.month, date.day]
         end
         patterns_by_popularity = histogram_of_patterns.flip # => {1 => [...], 2 => [...], 5 => [a, b]}
         highest_popularity = patterns_by_popularity.keys.max # => 5
         most_popular = patterns_by_popularity[highest_popularity].first # => a
         start_date = Date.new(@start_date.year, *most_popular)
-        
+
         [].tap do |guesses|
           skip_range.each do |skip|
             guesses << @klass.new.tap do |schedule|
               schedule.kind = :annually
               schedule.start_date = start_date
@@ -47,30 +47,30 @@
               schedule.skip = skip
             end
           end
         end
       end
-      
+
       def generate_monthly_guesses(dates)
         histogram_of_patterns = dates.to_histogram do |date|
           [date.get_nth_wday_of_month, Date::DAYNAMES[date.wday]]
         end
         patterns_by_popularity = histogram_of_patterns.flip
-        
+
         histogram_of_days = dates.to_histogram(&:day)
         days_by_popularity = histogram_of_days.flip
-        
+
         if @verbose
           puts "",
                "  monthly analysis:",
                "    input: #{dates.inspect}",
                "    histogram (weekday): #{histogram_of_patterns.inspect}",
                "    by_popularity (weekday): #{patterns_by_popularity.inspect}",
                "    histogram (day): #{histogram_of_days.inspect}",
                "    by_popularity (day): #{days_by_popularity.inspect}"
         end
-        
+
         [].tap do |guesses|
           skip_range.each do |skip|
             enumerate_by_popularity(days_by_popularity) do |days|
               next if days.length > max_complexity
               guesses << @klass.new.tap do |schedule|
@@ -79,11 +79,11 @@
                 schedule.end_date = @end_date
                 schedule.skip = skip
                 schedule.monthly_pattern = days
               end
             end
-            
+
             enumerate_by_popularity(patterns_by_popularity) do |patterns|
               next if patterns.length > max_complexity
               guesses << @klass.new.tap do |schedule|
                 schedule.kind = :monthly
                 schedule.start_date = @start_date
@@ -93,26 +93,26 @@
               end
             end
           end
         end
       end
-      
+
       def generate_weekly_guesses(dates)
         [].tap do |guesses|
           histogram_of_wdays = dates.to_histogram do |date|
             Date::DAYNAMES[date.wday]
           end
           wdays_by_popularity = histogram_of_wdays.flip
-          
+
           if @verbose
             puts "",
                  "  weekly analysis:",
                  "    input: #{dates.inspect}",
                  "    histogram: #{histogram_of_wdays.inspect}",
                  "    by_popularity: #{wdays_by_popularity.inspect}"
           end
-          
+
           skip_range.each do |skip|
             enumerate_by_popularity(wdays_by_popularity) do |wdays|
               next if wdays.length > max_complexity
               guesses << @klass.new.tap do |schedule|
                 schedule.kind = :weekly
@@ -123,27 +123,27 @@
               end
             end
           end
         end
       end
-      
+
       def skip_range
         return 1..1 unless allow_skips?
         1...5
       end
-      
-      
-      
+
+
+
       # Expects a hash of values grouped by popularity
       # Yields the most popular values first, and then
       # increasingly less popular values
       def enumerate_by_popularity(values_by_popularity)
         popularities = values_by_popularity.keys.sort.reverse
         popularities.length.times do |i|
           at_popularities = popularities.take(i + 1)
           yield values_by_popularity.values_at(*at_popularities).flatten(1)
         end
       end
-      
+
     end
   end
 end