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simple_feature_name.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 SIMPLE_FEATURE_NAME
--
-- Is used for simple (not infix or prefix) names of feature in the
-- declaration part of a feature but is also used when writing an
-- attribute as a left hand side of an assignment.
--
inherit
FEATURE_NAME;
EXPRESSION
redefine is_writable
end;
creation make, with
feature
to_string: STRING;
start_position: POSITION;
run_feature_2: RUN_FEATURE_2;
-- Corresponding one when runnable.
feature
is_frozen: BOOLEAN is false;
is_current: BOOLEAN is false;
is_writable: BOOLEAN is true;
use_current: BOOLEAN is true;
is_pre_computable: BOOLEAN is false;
isa_dca_inline_argument: INTEGER is 0;
is_static: BOOLEAN is false;
feature {BASE_CLASS}
make(n: STRING; sp: like start_position) is
require
n.count >= 1;
n = string_aliaser.item(n)
do
to_string := n;
start_position := sp;
ensure
to_string = n;
start_position = sp
end;
feature {NONE}
with(model: like Current; rf2: RUN_FEATURE_2) is
require
model /= Void;
rf2 /= Void
do
to_string := model.to_string;
start_position := model.start_position;
run_feature_2 := rf2;
ensure
to_string = model.to_string;
start_position = model.start_position;
run_feature_2 = rf2
end;
feature
static_result_base_class: BASE_CLASS is
local
bc: BASE_CLASS;
e_feature: E_FEATURE;
rt: TYPE;
cn: CLASS_NAME;
do
bc := start_position.base_class;
if bc /= Void then
e_feature := bc.e_feature(Current);
if e_feature /= Void then
rt := e_feature.result_type;
if rt /= Void then
cn := rt.static_base_class_name;
if cn /= Void then
Result := cn.base_class;
end;
end;
end;
end;
end;
static_value: INTEGER is
do
end;
to_key: STRING is
do
Result := to_string;
end;
result_type: TYPE is
do
Result := run_feature_2.result_type;
end;
can_be_dropped: BOOLEAN is
do
eh.add_position(start_position);
fatal_error("FEATURE_NAME/Should never be called.");
end;
to_runnable(ct: TYPE): like Current is
local
wbc: BASE_CLASS;
rf: RUN_FEATURE;
new_name: FEATURE_NAME;
rf2: RUN_FEATURE_2;
do
wbc := start_position.base_class;
new_name := ct.base_class.new_name_of(wbc,Current);
rf := ct.run_class.get_feature(new_name);
if rf = Void then
eh.add_feature_name(new_name);
fatal_error(fz_feature_not_found);
else
rf2 ?= rf;
if rf2 = Void then
eh.add_position(rf.start_position);
error(start_position,
"Feature found is not writable.");
end;
end;
if run_feature_2 = Void then
run_feature_2 := rf2;
Result := Current;
elseif run_feature_2 = rf then
Result := Current;
else
!!Result.with(Current,rf2);
end;
end;
precedence: INTEGER is
do
Result := atomic_precedence;
end;
assertion_check(tag: CHARACTER) is
do
end;
dca_inline_argument(formal_arg_type: TYPE) is
do
end;
mapping_c_target(target_type: TYPE) is
local
flag: BOOLEAN;
do
flag := cpp.call_invariant_start(target_type);
compile_to_c;
if flag then
cpp.call_invariant_end;
end;
end;
mapping_c_arg(formal_arg_type: TYPE) is
do
compile_to_c;
end;
collect_c_tmp is
do
end;
compile_to_c is
do
cpp.put_string("C->_");
cpp.put_string(run_feature_2.name.to_string);
end;
c_declare_for_old is
do
end;
compile_to_c_old is
do
end;
compile_to_jvm_old is
do
end;
print_as_target is
do
fmt.put_string(to_string);
fmt.put_character('.');
end;
mapping_c_in(str: STRING) is
do
str.append(to_string);
end;
declaration_in(str: STRING) is
do
str.append(to_string);
end;
pretty_print, declaration_pretty_print is
do
fmt.put_string(to_string);
end;
short is
local
i: INTEGER;
c: CHARACTER;
do
short_print.hook("Bsfn");
from
i := 1;
until
i > to_string.count
loop
c := to_string.item(i);
if c = '_' then
short_print.hook_or("Usfn","_");
else
short_print.a_character(c);
end;
i := i + 1;
end;
short_print.hook("Asfn");
end;
short_target is
do
short;
short_print.a_dot;
end;
compile_target_to_jvm, compile_to_jvm is
do
eh.add_position(start_position);
fatal_error(fz_jvm_error);
end;
jvm_branch_if_false: INTEGER is
do
compile_to_jvm;
Result := code_attribute.opcode_ifeq;
end;
jvm_branch_if_true: INTEGER is
do
compile_to_jvm;
Result := code_attribute.opcode_ifne;
end;
compile_to_jvm_into(dest: TYPE): INTEGER is
do
Result := standard_compile_to_jvm_into(dest);
end;
jvm_assign is
local
space, idx: INTEGER;
rf2: like run_feature_2;
ca: like code_attribute;
do
rf2 := run_feature_2;
ca := code_attribute;
space := rf2.result_type.jvm_stack_space;
ca.opcode_aload_0;
if space = 1 then
ca.opcode_swap;
else
ca.opcode_dup_x2;
ca.opcode_pop;
end;
idx := constant_pool.idx_fieldref(rf2);
ca.opcode_putfield(idx,-(space + 1));
end;
feature {TYPE_BIT_2}
run_feature(t: TYPE): RUN_FEATURE is
-- Look for the corresponding runnable feature in `t';
require
t.is_run_type
do
Result := t.run_class.get_rf_with(Current);
end;
feature {RUN_FEATURE,FEATURE_NAME}
put_cpp_tag is
do
end;
end -- SIMPLE_FEATURE_NAME