/src/lib/design_patterns/visitor.e

 1-- This file is part of a Liberty Eiffel library.
 2-- See the full copyright at the end.
 3--
 4deferred class VISITOR
 5   --
 6   -- The "Acyclic Visitor" design pattern type marker. This class is empty as each "node visitor" must add
 7   -- its "visit" feature that visits the corresponding node of a Composite (and each node must inherit from
 8   -- VISITABLE).
 9   --
10   -- For examples, look at the tools/visitor cluster of Liberty Eiffel.
11   --
12   -- See also http://www.objectmentor.com/resources/articles/acv.pdf
13   --
14
15end -- class VISITOR
16--
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