restructured files a bit

lib/time_ext/core_ext/ranges.rb

@@ -0,0 +1,56 @@
+class Time
+  
+  # Executes passed block for each unit of time specified
+  def each(unit, &block)
+    if block_given?
+      @each_until ||= self.tomorrow #TODO should be next larger unit
+      time = self.clone
+      while time <= @each_until
+        yield(time)
+        time = time.send("next_#{unit}")
+      end
+      self
+    else
+      @method_chain ||= []
+      @method_chain << [:each, [unit]]
+      self
+    end
+  end
+  alias :iterate :each
+  alias :beginning_of_each :each
+  
+  # Executes passed block for each unit of time specified
+  def map(unit, &block)
+    if block_given?
+      @each_until ||= self.tomorrow #TODO should be next larger unit
+      time = self.clone
+      result = []
+      while time <= @each_until
+        result << yield(time)
+        time = time.send("next_#{unit}")
+      end
+      result
+    else
+      @method_chain ||= []
+      @method_chain << [:map, [unit]]
+      self
+    end
+  end
+  alias :iterate :each
+  
+  # Used togeter with #each to specify end of interation
+  def until(time, &block)
+    time = time.to_time if time.is_a?(::Date)
+    @each_until = time
+    if block_given?
+      method, args = @method_chain.pop
+      self.send(method, *args, &block)
+    else
+      @method_chain ||= []
+      @method_chain << [:until, [time]]
+      self
+    end
+  end
+  alias :till :until
+  
+end