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e_void.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 E_VOID
--
-- Handling of the Eiffel `Void'.
--
inherit EXPRESSION;
creation make
feature
start_position: POSITION;
is_void: BOOLEAN is true;
is_writable: BOOLEAN is false;
is_current: BOOLEAN is false;
is_result: BOOLEAN is false;
is_static: BOOLEAN is true;
static_value: INTEGER is 0;
is_pre_computable: BOOLEAN is true;
is_manifest_string: BOOLEAN is false;
can_be_dropped: BOOLEAN is true;
use_current: BOOLEAN is false;
isa_dca_inline_argument: INTEGER is -1;
c_simple: BOOLEAN is true;
static_result_base_class: BASE_CLASS is
do
end;
bracketed_pretty_print, pretty_print is
do
fmt.put_string(as_void);
end;
to_string, to_key: STRING is
do
Result := as_void;
end;
dca_inline_argument(formal_arg_type: TYPE) is
do
mapping_c_arg(formal_arg_type);
end;
assertion_check(tag: CHARACTER) is
do
end;
afd_check is
do
end;
mapping_c_target(target_type: TYPE) is
do
end;
mapping_c_arg(formal_arg_type: TYPE) is
do
compile_to_c;
end;
short is
do
short_print.hook_or(as_void,as_void);
end;
short_target is
do
short;
short_print.a_dot;
end;
collect_c_tmp is
do
end;
compile_to_c is
do
cpp.put_string(fz_null);
end;
c_declare_for_old is
do
end;
compile_to_c_old is
do
end;
compile_to_jvm_old is
do
end;
compile_target_to_jvm, compile_to_jvm is
do
code_attribute.opcode_aconst_null;
end;
jvm_branch_if_false: INTEGER is
do
end;
jvm_branch_if_true: INTEGER is
do
end;
compile_to_jvm_into(dest: TYPE): INTEGER is
do
Result := 1;
compile_to_jvm;
end;
result_type: TYPE_NONE is
once
!!Result.make(Void);
end;
to_runnable(ct: TYPE): like Current is
do
Result := Current;
end;
print_as_target is
do
end;
precedence: INTEGER is
do
Result := atomic_precedence;
end;
jvm_assign is
do
end;
feature {NONE}
make(sp: like start_position) is
require
sp /= Void
do
start_position := sp;
ensure
sp /= Void
end;
end -- E_VOID