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type_like_argument.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 TYPE_LIKE_ARGUMENT
--
-- For an anchored declaration type mark using a formal argument.
--
-- See also TYPE_LIKE and TYPE_LIKE_CURRENT.
--
inherit TYPE_ANCHORED;
creation make, with
feature
like_what: ARGUMENT_NAME2;
written_mark: STRING;
feature {NONE}
run_feature: RUN_FEATURE;
feature
is_like_current: BOOLEAN is false;
is_like_argument: BOOLEAN is true;
is_like_feature: BOOLEAN is false;
feature {NONE}
make(sp: like start_position; lw: like like_what) is
require
sp /= Void;
lw /= Void;
do
start_position := sp;
like_what := lw;
tmp_written_mark.copy(fz_like);
tmp_written_mark.extend(' ');
tmp_written_mark.append(like_what.to_string);
written_mark := string_aliaser.item(tmp_written_mark);
ensure
start_position = sp;
like_what = lw;
end;
with(model: like Current; rf: RUN_FEATURE) is
require
model /= Void;
rf /= Void
do
start_position := model.start_position;
like_what := model.like_what;
written_mark := model.written_mark;
run_feature := rf;
ensure
start_position = model.start_position;
like_what = model.like_what;
written_mark = model.written_mark;
run_feature = rf
end;
feature
static_base_class_name: CLASS_NAME is
local
bc: BASE_CLASS;
do
bc := like_what.static_result_base_class;
if bc /= Void then
Result := bc.name;
end;
end;
is_run_type: BOOLEAN is
do
if run_feature /= Void then
Result := run_type.is_run_type;
end;
end;
run_type: TYPE is
local
fal: FORMAL_ARG_LIST;
do
fal := run_feature.arguments;
Result := fal.type(rank);
if Result.is_run_type then
Result := Result.run_type;
end;
end;
to_runnable(ct: TYPE): like Current is
local
rf: RUN_FEATURE;
rt: TYPE;
do
anchor_cycle_start;
rf := small_eiffel.top_rf;
if rf.arguments = Void then
eh.add_position(start_position);
eh.add_position(rf.start_position);
fatal_error(fz_bad_anchor);
end;
if run_feature = Void then
run_feature := rf;
Result := Current;
elseif run_feature = rf then
Result := Current;
else
!!Result.with(Current,rf);
end;
rt := Result.run_type;
if rt.is_anchored then
rt := rt.to_runnable(ct);
end;
anchor_cycle_end;
end;
rank: INTEGER is
do
Result := like_what.rank;
end;
is_a(other: TYPE): BOOLEAN is
do
Result := run_type.is_a(other)
end;
feature {TYPE}
short_hook is
do
short_print.hook_or("like","like ");
like_what.short;
end;
invariant
as_current /= like_what.to_string;
end -- TYPE_LIKE_ARGUMENT