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-- This file is part of SmartEiffel The GNU Eiffel Compiler Tools and Libraries
--
-- SmartEiffel 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.
-- SmartEiffel 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 SmartEiffel; see the file COPYING. If not, write to
-- the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
-- MA 02111-1307, USA.
--
-- Copyright(C) 1994-2002: INRIA - LORIA (INRIA Lorraine) - ESIAL U.H.P.
-- - University of Nancy 1 - FRANCE
-- Copyright(C) 2003: INRIA - LORIA (INRIA Lorraine) - I.U.T. Charlemagne
-- - University of Nancy 2 - FRANCE
--
-- Dominique COLNET, Suzanne COLLIN, Olivier ZENDRA,
-- Philippe RIBET, Cyril ADRIAN
--
-- http://SmartEiffel.loria.fr - SmartEiffel@loria.fr
--
class ONCE_FUNCTION
inherit ONCE_ROUTINE
creation make
feature
result_type: E_TYPE
to_run_feature(t: E_TYPE; fn: FEATURE_NAME): RUN_FEATURE_6 is
do
create Result.make(t, fn, Current)
end
once_pre_computable: BOOLEAN is
-- Purely static computation (only really simple once functions are
-- actually pre-computable).
local
bc: like base_class
do
inspect
once_pre_computable_memory
when 0 then
once_pre_computable_memory := 1
bc := base_class
if ((not bc.require_check) or else require_assertion = Void)
and then
((not bc.ensure_check) or else ensure_assertion = Void)
and then
(rescue_compound = Void)
then
if routine_body = Void then
Result := True
else
Result := routine_body.once_pre_computable
end
end
if Result then
once_pre_computable_memory := 3
else
once_pre_computable_memory := 2
end
when 1 then
once_pre_computable_memory := 2
when 2 then
when 3 then
Result := True
end
end
feature {ONCE_FUNCTION_VISITOR}
accept(visitor: ONCE_FUNCTION_VISITOR) is
do
visitor.visit_once_function(Current)
end
feature {NONE}
make(n: like names
fa: like arguments
t: like result_type
om: like obsolete_mark
hc: like header_comment
ra: like require_assertion
lv: like local_vars
rb: like routine_body) is
require
t /= Void
do
make_effective_routine(n, fa, om, hc, ra, lv ,rb)
result_type := t
end
once_pre_computable_memory: INTEGER
try_to_undefine_aux(fn: FEATURE_NAME; bc: BASE_CLASS): DEFERRED_ROUTINE is
do
create {DEFERRED_FUNCTION}
Result.from_effective(fn, arguments,
result_type,
require_assertion,
ensure_assertion,
bc)
end
end -- ONCE_FUNCTION
|
