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type_formal_generic.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_FORMAL_GENERIC
inherit
TYPE
redefine is_formal_generic, is_boolean,
is_character, is_integer, is_real, is_double, is_string,
is_array, is_bit, is_pointer,
to_reference, to_expanded
end;
creation make
feature
formal_name: CLASS_NAME;
-- Formal argument name.
rank: INTEGER;
-- Rank in the corresponding generic list.
run_type: TYPE;
-- Not Void when real type is known.
feature {NONE}
make(fn: like formal_name; r: INTEGER) is
require
fn /= Void;
r > 0
do
rank := r;
formal_name := fn;
ensure
formal_name = fn;
rank = r
end;
feature
is_formal_generic: BOOLEAN is true;
is_like_current: BOOLEAN is false;
is_like_argument: BOOLEAN is false;
is_like_feature: BOOLEAN is false;
static_base_class_name: CLASS_NAME is
local
t: TYPE;
do
t := constraint;
if t /= Void then
Result := t.static_base_class_name;
else
-- *** eh.append("TYPE_FORMAL_GENERIC.static_base_class_name NYI");
-- *** eh.print_as_warning;
end;
end;
run_class: RUN_CLASS is
do
Result := small_eiffel.run_class(run_type);
end;
space_for_variable: INTEGER is
do
Result := run_type.space_for_variable;
end;
space_for_object: INTEGER is
do
Result := run_type.space_for_object;
end;
is_boolean: BOOLEAN is
do
Result := run_type.is_boolean;
end;
is_character: BOOLEAN is
do
Result := run_type.is_character;
end;
is_integer: BOOLEAN is
do
Result := run_type.is_integer;
end;
is_real: BOOLEAN is
do
Result := run_type.is_real;
end;
is_double: BOOLEAN is
do
Result := run_type.is_double;
end;
is_string: BOOLEAN is
do
Result := run_type.is_string;
end;
is_array: BOOLEAN is
do
Result := run_type.is_array;
end;
is_bit: BOOLEAN is
do
Result := run_type.is_bit;
end;
is_any: BOOLEAN is
do
Result := run_type.is_any;
end;
is_none: BOOLEAN is
do
Result := run_type.is_none;
end;
is_pointer: BOOLEAN is
do
Result := run_type.is_pointer;
end;
is_reference: BOOLEAN is
do
Result := run_type.is_reference;
end;
is_expanded: BOOLEAN is
do
Result := run_type.is_expanded;
end;
is_basic_eiffel_expanded: BOOLEAN is
do
Result := run_type.is_basic_eiffel_expanded;
end;
is_dummy_expanded: BOOLEAN is
do
Result := run_type.is_dummy_expanded;
end;
is_user_expanded: BOOLEAN is
do
Result := run_type.is_user_expanded;
end;
is_generic: BOOLEAN is
do
Result := run_type.is_generic;
end;
generic_list: ARRAY[TYPE] is
do
if is_generic then
Result := run_type.generic_list;
else
fatal_error_generic_list;
end;
end;
to_reference is
do
run_type.to_reference;
end;
to_expanded is
do
run_type.to_expanded;
end;
c_header_pass1 is
do
run_type.c_header_pass1;
end;
c_header_pass2 is
do
run_type.c_header_pass2;
end;
c_header_pass3 is
do
run_type.c_header_pass3;
end;
c_header_pass4 is
do
run_type.c_header_pass4;
end;
c_initialize is
do
run_type.c_initialize;
end;
c_initialize_in(str: STRING) is
do
run_type.c_initialize_in(str);
end;
expanded_initializer: RUN_FEATURE_3 is
do
Result := run_type.expanded_initializer;
end;
id: INTEGER is
do
Result := run_class.id;
end;
has_creation(fn: FEATURE_NAME): BOOLEAN is
do
if Current = run_type then
Result := base_class.has_creation(fn);
else
Result := run_type.has_creation(fn);
end;
end;
base_class_name: CLASS_NAME is
do
Result := run_type.base_class_name;
end;
start_position: POSITION is
do
Result := formal_name.start_position;
end;
c_type_for_argument_in(str: STRING) is
do
run_type.c_type_for_argument_in(str);
end;
c_type_for_target_in(str: STRING) is
do
run_type.c_type_for_target_in(str);
end;
c_type_for_result_in(str: STRING) is
do
run_type.c_type_for_result_in(str);
end;
need_c_struct: BOOLEAN is
do
Result := run_type.need_c_struct;
end;
formal_generic_list: FORMAL_GENERIC_LIST is
-- Formal generic list it belongs to.
do
Result := start_position.base_class.formal_generic_list;
end;
formal_arg: FORMAL_GENERIC_ARG is
do
Result := formal_generic_list.item(rank);
end;
constraint: TYPE is
do
Result := formal_arg.constraint;
end;
smallest_ancestor(other: TYPE): TYPE is
do
Result := run_type.smallest_ancestor(other);
end;
is_a(other: TYPE): BOOLEAN is
do
Result := run_type.is_a(other);
end;
is_run_type: BOOLEAN is
do
Result := run_type /= Void;
end;
written_mark: STRING is
do
Result := formal_name.to_string;
end;
run_time_mark: STRING is
do
Result := run_type.run_time_mark;
end;
used_as_reference is
do
if is_expanded then
run_class.used_as_reference;
end;
end;
jvm_method_flags: INTEGER is
do
Result := run_type.jvm_method_flags;
end;
jvm_descriptor_in(str: STRING) is
do
run_type.jvm_descriptor_in(str);
end;
jvm_target_descriptor_in(str: STRING) is
do
run_type.jvm_target_descriptor_in(str);
end;
jvm_return_code is
do
run_type.jvm_return_code;
end;
jvm_push_local(offset: INTEGER) is
do
run_type.jvm_push_local(offset);
end;
jvm_check_class_invariant is
do
run_type.jvm_check_class_invariant;
end;
jvm_push_default: INTEGER is
do
Result := run_type.jvm_push_default;
end;
jvm_write_local(offset: INTEGER) is
do
run_type.jvm_write_local(offset);
end;
jvm_xnewarray is
do
run_type.jvm_xnewarray;
end;
jvm_xastore is
do
run_type.jvm_xastore;
end;
jvm_xaload is
do
run_type.jvm_xaload;
end;
jvm_if_x_eq: INTEGER is
do
Result := run_type.jvm_if_x_eq;
end;
jvm_if_x_ne: INTEGER is
do
Result := run_type.jvm_if_x_ne;
end;
jvm_to_reference is
do
run_type.jvm_to_reference;
end;
jvm_expanded_from_reference(other: TYPE): INTEGER is
do
Result := run_type.jvm_expanded_from_reference(other);
end;
jvm_convert_to(destination: TYPE): INTEGER is
do
Result := run_type.jvm_convert_to(destination);
end;
jvm_standard_is_equal is
do
run_type.jvm_standard_is_equal;
end;
to_runnable(ct: TYPE): like Current is
local
bc_written, bc_ct: BASE_CLASS;
p: PARENT;
t: TYPE;
gl: ARRAY[TYPE];
do
bc_written := start_position.base_class;
bc_ct := ct.base_class;
if bc_written = bc_ct then
gl := ct.generic_list;
if gl = Void or else rank > gl.upper then
eh.add_position(ct.start_position);
eh.add_position(start_position);
fatal_error(fz_bnga);
else
Result := make_runnable(gl.item(rank));
end;
else
check
bc_ct.is_subclass_of(bc_written)
end;
from
p := bc_ct.first_parent_for(bc_written);
until
p = Void
loop
t := p.type;
t := t.to_runnable(ct).run_type;
if Result = Void then
Result := to_runnable(t);
p := Void;
else
p := bc_ct.next_parent_for(bc_written,p);
end;
end;
if Result = Void then
eh.add_type(ct," is the context.");
warning(start_position,"Unable to compute this type.");
end;
end;
end;
feature {RUN_CLASS,TYPE}
need_gc_mark_function: BOOLEAN is
do
Result := run_type.need_gc_mark_function;
end;
just_before_gc_mark_in(str: STRING) is
do
run_type.just_before_gc_mark_in(str);
end;
gc_info_in(str: STRING) is
do
run_type.gc_info_in(str);
end;
gc_define1 is
do
run_type.gc_define1;
end;
gc_define2 is
do
run_type.gc_define2;
end;
feature {TYPE_FORMAL_GENERIC}
make_runnable(rt: like run_type): like Current is
local
rt2: TYPE;
do
rt2 := rt.run_type;
if rt2 = Void then
if rt /= Void then
eh.add_position(rt.start_position);
end;
error(start_position,fz_bga);
elseif run_type = Void then
run_type := rt2;
Result := Current;
else
Result := twin;
Result.set_run_type(rt2);
end;
end;
set_run_type(rt: TYPE) is
require
rt /= Void
do
run_type := rt;
ensure
run_type = rt
end;
feature {TYPE}
frozen short_hook is
do
short_print.a_class_name(formal_name);
end;
invariant
start_position /= Void;
end -- TYPE_FORMAL_GENERIC