markable.rb in yargi-0.2.0

- old
+ new

@@ -1,32 +1,32 @@
 module Yargi
-  
+
   #
-  # Allows users to put its own marks on graph elements. A Hash-like API for setting 
-  # and getting these marks is provided through <tt>[]</tt> and <tt>[]=</tt>. When a 
-  # Symbol object is used as a mark key (and provided it does'nt lead to a name 
-  # collision), accessors are automatically defined as singleton methods (without 
+  # Allows users to put its own marks on graph elements. A Hash-like API for setting
+  # and getting these marks is provided through <tt>[]</tt> and <tt>[]=</tt>. When a
+  # Symbol object is used as a mark key (and provided it does'nt lead to a name
+  # collision), accessors are automatically defined as singleton methods (without
   # creating an instance variable however).
   #
   module Markable
 
     # Tag this element with some modules
     def tag(*modules)
       modules.each {|mod| self.extend(mod)}
     end
-    
+
     # Checks if a given mark exists
     def has_mark?(key)
       @marks and @marks.has_key?(key)
     end
 
     # Returns the mark value installed under _key_. Returns nil if no such mark.
     def get_mark(key)
-      @marks ? @marks[key] : nil; 
+      @marks ? @marks[key] : nil;
     end
     alias :[] :get_mark
-    
+
     # Sets a key/value pair as a mark. Overrides previous mark value if _key_ is
     # already in used. Automatically creates accessors if _key_ is a Symbol and such
     # methods do not already exists.
     def set_mark(key, value)
       @marks = {} unless @marks
@@ -39,30 +39,30 @@
           end
         }
       end
     end
     alias :[]= :set_mark
-    
+
     # Add all marks provided by a Hash instance _marks_.
     def add_marks(marks=nil)
       marks.each_pair {|k,v| self[k]=v} if marks
       if block_given?
         result = yield self
         add_marks(result) if Hash===result
       end
     end
     alias :merge_marks :add_marks
-    
+
     # Converts this Markable to a Hash. When _nonil_ is true, nil mark values
     # do not lead to hash entries.
     def to_h(nonil=true)
       return {} unless @marks
       marks = @marks.dup
       if nonil
         marks.delete_if {|k,v| v.nil?}
       end
       marks
     end
-    
+
   end # module Markable
-  
+
 end
\ No newline at end of file