| Class DS_SORTABLE |
indexing
description:
"Data structures that can be sorted"
library: "Gobo Eiffel Structure Library"
author: "Eric Bezault <ericb@gobosoft.com>"
copyright: "Copyright (c) 1999-2001, Eric Bezault and others"
license: "Eiffel Forum License v2 (see forum.txt)"
deferred class interface
DS_SORTABLE [G]
inherit
DS_CONTAINER [G]
feature {NONE} -- Initialization
make_default
-- Create an empty container.
-- (From DS_CONTAINER.)
deferred
ensure
empty: is_empty
feature -- Measurement
count: INTEGER
-- Number of items in container
-- (From DS_CONTAINER.)
deferred
feature -- Status report
is_empty: BOOLEAN -- Is container empty? -- (From DS_CONTAINER.)sorted (a_sorter: DS_SORTER [G]): BOOLEAN -- Is container sorted according to a_sorter's criterion? require a_sorter_not_void: a_sorter /= Void
feature -- Comparison
is_equal (other: like Current): BOOLEAN
-- Is current container equal to other?
-- (From GENERAL.)
require
other_not_void: other /= Void
deferred
ensure
consistent: standard_is_equal (other) implies Result
same_type: Result implies same_type (other)
symmetric: Result implies other.is_equal (Current)
same_count: Result implies count = other.count
feature -- Duplication
copy (other: like Current)
-- Copy other to current container.
-- (From GENERAL.)
require
other_not_void: other /= Void
type_identity: same_type (other)
deferred
ensure
is_equal: is_equal (other)
feature -- Sort
sort (a_sorter: DS_SORTER [G])
-- Sort container using a_sorter's algorithm.
require
a_sorter_not_void: a_sorter /= Void
ensure
sorted: sorted (a_sorter)
feature -- Removal
wipe_out
-- Remove all items from container.
-- (From DS_CONTAINER.)
deferred
ensure
wiped_out: is_empty
invariant
positive_count: count >= 0
empty_definition: is_empty = (count = 0)
-- (From DS_CONTAINER.)
end -- class DS_SORTABLE
|
Copyright © 1999-2001, Eric
Bezault mailto:ericb@gobosoft.com http://www.gobosoft.com Last Updated: 31 March 2001 |