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cst_att_unique.e
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1999-06-05
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-- This file is part of SmallEiffel The GNU Eiffel Compiler.
-- Copyright (C) 1994-98 LORIA - UHP - CRIN - INRIA - FRANCE
-- Dominique COLNET and Suzanne COLLIN - colnet@loria.fr
-- http://SmallEiffel.loria.fr
-- SmallEiffel is free software; you can redistribute it and/or modify it
-- under the terms of the GNU General Public License as published by the Free
-- Software Foundation; either version 2, or (at your option) any later
-- version. SmallEiffel is distributed in the hope that it will be useful,but
-- WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
-- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
-- for more details. You should have received a copy of the GNU General
-- Public License along with SmallEiffel; see the file COPYING. If not,
-- write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-- Boston, MA 02111-1307, USA.
--
class CST_ATT_UNIQUE
--
-- For "unique" constant attribute.
--
inherit CST_ATT redefine pretty_tail end;
creation make
feature {NONE}
values: FIXED_ARRAY[INTEGER_CONSTANT];
feature {NONE}
make(n: like names; t: like result_type) is
require
n /= Void;
t.is_integer;
local
i: INTEGER;
ic: INTEGER_CONSTANT;
do
make_e_feature(n);
result_type := t;
!!values.make(names.count);
from
i := 0
until
i > values.upper
loop
counter.increment;
!!ic.make(counter.value,Void);
values.put(ic,i);
i := i + 1;
end;
end;
feature
value(i: INTEGER): INTEGER_CONSTANT is
do
Result := values.item(i - 1);
end;
feature {NONE}
pretty_tail is
do
fmt.put_string(" is unique");
end;
feature {NONE}
counter: COUNTER is
once
!!Result
end;
end -- CST_ATT_UNIQUE