note
	description: "[
		Objects that are able to iterate over cursor trees, 
		on which they can perform repeated actions and tests according
		to a number of predefined control structures such as if,
		until and others.
	]"
	library: "Free implementation of ELKS library"
	legal: "See notice at end of class."
	status: "See notice at end of class."
	names: iterators, iteration, cursor_tree_iterators, cursor_tree_iteration, tree_iterators, tree_iteration
	exploration: depth_first, breadth_first
	traversal: preorder, postorder, inorder
	date: "$Date: 2017-04-10 07:37:21 +0000 (Mon, 10 Apr 2017) $"
	revision: "$Revision: 100119 $"

deferred class interface
	CURSOR_TREE_ITERATOR [G]

feature -- Status report

	target: CURSOR_TREE [G]
			-- The structure to which iteration features will apply
	
feature -- Cursor movement

	pre_start
			-- Move cursor of target to root position
			-- (first position in preorder and breadth-first).
			-- Was declared in CURSOR_TREE_ITERATOR as synonym of breadth_start.

	breadth_start
			-- Move cursor of target to root position
			-- (first position in preorder and breadth-first).
			-- Was declared in CURSOR_TREE_ITERATOR as synonym of pre_start.

	post_start
			-- Move cursor of target to first position in postorder.

	pre_forth
			-- Move cursor of target to next position in preorder.

	post_forth
			-- Move cursor of target to next position in postorder.

	breadth_forth
			-- Move cursor of target to next position in breadth-first.
	
note
	copyright: "Copyright (c) 1984-2012, Eiffel Software and others"
	license: "Eiffel Forum License v2 (see http://www.eiffel.com/licensing/forum.txt)"
	source: "[
		Eiffel Software
		5949 Hollister Ave., Goleta, CA 93117 USA
		Telephone 805-685-1006, Fax 805-685-6869
		Website http://www.eiffel.com
		Customer support http://support.eiffel.com
	]"

end -- class CURSOR_TREE_ITERATOR

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