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type_native_array.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_NATIVE_ARRAY
inherit TYPE;
creation make, make_runnable
feature
base_class_name: CLASS_NAME;
generic_list: ARRAY[TYPE];
written_mark: STRING;
run_type: like Current;
-- Not Void when runnable.
is_expanded: BOOLEAN is true;
is_reference: BOOLEAN is false;
is_generic: BOOLEAN is true;
is_basic_eiffel_expanded: BOOLEAN is false;
is_dummy_expanded: BOOLEAN is false;
is_user_expanded: BOOLEAN is false;
is_array: BOOLEAN is false;
is_none: BOOLEAN is false;
is_any: BOOLEAN is false;
is_like_current: BOOLEAN is false;
is_like_argument: BOOLEAN is false;
is_like_feature: BOOLEAN is false;
jvm_method_flags: INTEGER is 9;
static_base_class_name: CLASS_NAME is
do
Result := base_class_name;
end;
elements_type: TYPE is
do
Result := generic_list.first;
end;
of_references: BOOLEAN is
do
Result := elements_type.is_reference;
end;
smallest_ancestor(other: TYPE): TYPE is
local
rto: TYPE;
do
rto := other.run_type;
if rto.is_a(run_type) then
Result := rto;
elseif run_type.is_a(rto) then
Result := run_type;
else
Result := type_any;
end;
eh.cancel;
end;
run_time_mark: STRING is
do
if is_run_type then
Result := run_type.written_mark;
end;
end;
is_run_type: BOOLEAN is
local
et: TYPE;
do
if run_type /= Void then
Result := true;
else
et := elements_type;
if et.is_run_type and then et.run_type = et then
run_type := Current;
load_basic_features;
Result := true;
end;
end;
end;
to_runnable(ct: TYPE): like Current is
local
et1, et2: TYPE;
rt: like Current;
do
et1 := elements_type;
et2 := et1.to_runnable(ct);
if et2 = Void then
if et2 /= Void then
eh.add_position(et2.start_position);
end;
eh.add_position(et1.start_position);
fatal_error(fz_bga);
end;
et2 := et2.run_type;
if run_type = Void then
Result := Current;
if et2 = et1 then
run_type := Current;
load_basic_features;
else
!!run_type.make_runnable(start_position,et2);
run_type.load_basic_features;
end;
elseif et2 = et1 then
Result := Current;
else
Result := twin;
!!rt.make_runnable(start_position,et2);
Result.set_run_type(rt);
rt.load_basic_features;
end;
end;
expanded_initializer: RUN_FEATURE_3 is
do
end;
start_position: POSITION is
do
Result := base_class_name.start_position;
end;
is_a(other: TYPE): BOOLEAN is
do
-- Because of VNCE :
Result := run_time_mark = other.run_time_mark;
if not Result then
eh.add_type(Current,fz_inako);
eh.add_type(other,fz_dot);
end;
end;
has_creation(fn: FEATURE_NAME): BOOLEAN is
do
end;
id: INTEGER is
do
Result := run_class.id;
end;
run_class: RUN_CLASS is
do
if is_run_type then
Result := small_eiffel.run_class(run_type);
end;
end;
space_for_variable, space_for_object: INTEGER is
do
Result := space_for_pointer;
end;
c_header_pass1 is
do
generic_list.first.run_class.c_header_pass1;
end;
c_header_pass2 is
local
et: TYPE;
do
generic_list.first.run_class.c_header_pass2;
et := elements_type.run_type;
tmp_string.copy(fz_typedef);
c_type_in(tmp_string);
tmp_string.extend('T');
id.append_in(tmp_string);
tmp_string.append(fz_00);
cpp.put_string(tmp_string);
end;
c_header_pass3 is
do
end;
c_header_pass4 is
do
standard_c_print_function;
end;
need_c_struct: BOOLEAN is
do
end;
c_initialize is
do
cpp.put_string(fz_null);
end;
c_initialize_in(str: STRING) is
do
str.append(fz_null);
end;
c_type_for_argument_in(str: STRING) is
do
str.extend('T');
id.append_in(str);
end;
c_type_for_target_in(str: STRING) is
do
c_type_for_argument_in(str);
end;
c_type_for_result_in(str: STRING) is
do
c_type_for_argument_in(str);
end;
used_as_reference is
do
end;
to_reference is
do
end;
jvm_target_descriptor_in, jvm_descriptor_in(str: STRING) is
do
str.extend('[');
elements_type.jvm_descriptor_in(str);
end;
jvm_return_code is
do
code_attribute.opcode_areturn;
end;
jvm_push_local(offset: INTEGER) is
do
code_attribute.opcode_aload(offset);
end;
jvm_check_class_invariant is
do
end;
jvm_push_default: INTEGER is
do
code_attribute.opcode_aconst_null;
Result := 1;
end;
jvm_write_local(offset: INTEGER) is
do
code_attribute.opcode_astore(offset);
end;
jvm_xnewarray is
local
idx: INTEGER;
do
tmp_string.clear;
jvm_target_descriptor_in(tmp_string);
idx := constant_pool.idx_class2(tmp_string);
code_attribute.opcode_anewarray(idx);
end;
jvm_xastore is
do
code_attribute.opcode_aastore;
end;
jvm_xaload is
do
code_attribute.opcode_aaload;
end;
jvm_if_x_eq: INTEGER is
do
Result := code_attribute.opcode_if_acmpeq;
end;
jvm_if_x_ne: INTEGER is
do
Result := code_attribute.opcode_if_acmpne;
end;
jvm_to_reference is
do
end;
jvm_expanded_from_reference(other: TYPE): INTEGER is
do
check
false
end;
end;
jvm_convert_to(destination: TYPE): INTEGER is
do
check
run_time_mark = destination.run_time_mark
end;
Result := 1;
end;
jvm_standard_is_equal is
local
ca: like code_attribute;
point1, point2: INTEGER;
do
ca := code_attribute;
point1 := jvm_if_x_eq;
ca.opcode_iconst_0;
point2 := ca.opcode_goto;
ca.resolve_u2_branch(point1);
ca.opcode_iconst_1;
ca.resolve_u2_branch(point2);
end;
feature {RUN_CLASS,TYPE}
need_gc_mark_function: BOOLEAN is true;
just_before_gc_mark_in(c_code: STRING) is
do
c_code.append("if(");
gc_na_env_in(c_code);
c_code.append(".store_left>0){%N");
gc_na_env_in(c_code);
c_code.append(".store->header.size=");
gc_na_env_in(c_code);
c_code.append(".store_left;%N");
gc_na_env_in(c_code);
c_code.append(".store->header.magic_flag=RSOH_FREE;%N");
gc_na_env_in(c_code);
c_code.append(".store_left=0;%N}%N");
gc_na_env_in(c_code);
c_code.append(".chunk_list=NULL;%N");
gc_na_env_in(c_code);
c_code.append(".store_chunk=NULL;%N");
end;
gc_info_in(c_code: STRING) is
do
-- Print gc_info_nbXXX :
c_code.append(fz_printf);
c_code.extend('(');
c_code.extend('%"');
c_code.append(run_time_mark);
c_code.append(fz_10);
gc_info_nb_in(c_code);
c_code.append(fz_14);
end;
gc_define1 is
local
rc: RUN_CLASS;
rcid: INTEGER;
do
rc := run_class;
rcid := rc.id;
-- ------------------------------------ Declare na_envXXX :
header.copy("na_env ");
gc_na_env_in(header);
body.copy("{0,NULL,NULL,NULL,(void(*)(T0*))");
gc_mark_in(body);
body.extend('}');
cpp.put_extern5(header,body);
-- -------------------------------- Declare gc_info_nbXXX :
if gc_handler.info_flag then
header.copy(fz_int);
header.extend(' ');
gc_info_nb_in(header);
cpp.put_extern2(header,'0');
end;
end;
gc_define2 is
local
et: TYPE;
et_rc: RUN_CLASS;
rcid: INTEGER;
do
et := elements_type;
et_rc := et.run_class;
rcid := run_class.id;
-- ----------------------------- Definiton for gc_markXXX :
header.copy(fz_void);
header.extend(' ');
gc_mark_in(header);
header.append("(T");
rcid.append_in(header);
header.append(" o)");
body.clear;
gc_mark(false);
cpp.put_c_function(header,body);
-- --------------------------------- Definiton for newXXX :
header.clear;
header.extend('T');
rcid.append_in(header);
header.extend(' ');
header.append(fz_new);
rcid.append_in(header);
header.append("(int size)");
body.clear;
body.append("size=(size*sizeof(");
et.c_type_for_result_in(body);
body.append("))+sizeof(rsoh);%N%
%if((size%%sizeof(double))!=0)%
%size+=(sizeof(double)-(size%%sizeof(double)));%N");
if gc_handler.info_flag then
gc_info_nb_in(body);
body.append("++;%N");
end;
body.append("if (size<=(");
gc_na_env_in(body);
body.append(".store_left)){%N%
%rsoh*r=");
gc_na_env_in(body);
body.append(".store;%N");
gc_na_env_in(body);
body.append(".store_left-=size;%N%
%if(");
gc_na_env_in(body);
body.append(".store_left>sizeof(rsoh)){%N%
%r->header.size=size;%N");
gc_na_env_in(body);
body.append(".store=((rsoh*)(((char*)(");
gc_na_env_in(body);
body.append(".store))+size));%N}%N%
%else {%N%
%r->header.size=size+");
gc_na_env_in(body);
body.append(".store_left;%N");
gc_na_env_in(body);
body.append(
".store_left=0;%N}%N%
%(r->header.magic_flag)=RSOH_UNMARKED;%N%
%((void)memset((r+1),0,r->header.size-sizeof(rsoh)));%N%
%return (void*)(r+1);%N}%N%
%return (void*)new_na(&");
gc_na_env_in(body);
body.append(",size);%N");
cpp.put_c_function(header,body);
end;
feature {TYPE_NATIVE_ARRAY}
set_run_type(t: like run_type) is
do
run_type := t;
end;
load_basic_features is
-- Force some basic feature to be loaded.
require
run_type = Current
local
et: TYPE;
rf: RUN_FEATURE;
rc: RUN_CLASS;
do
rc := run_class;
rc.set_at_run_time;
et := elements_type;
if et.is_expanded then
et.run_class.set_at_run_time;
end;
rf := rc.get_feature_with(as_item);
rf := rc.get_feature_with(as_put);
if et.expanded_initializer /= Void then
rf := rc.get_feature_with(as_clear_all);
end;
end;
feature {NONE}
c_type_in(str: STRING) is
local
et: TYPE;
do
et := elements_type;
str.extend('T');
if et.is_reference then
str.extend('0');
str.extend('*');
else
et.id.append_in(str);
end;
str.extend('*');
end;
feature {NONE}
gc_mark(is_unmarked: BOOLEAN) is
-- The main purpose is to compute for example the best
-- body for the gc_markXXX function. In fact, this
-- feature may be called to produce C code when C variable
-- `o' is not NULL.
-- Finally, when `is_unmarked' is true, object `o' is unmarked.
require
not gc_handler.is_off;
is_native_array;
run_class.at_run_time
local
et: TYPE;
et_rc: RUN_CLASS;
do
et := elements_type;
et_rc := et.run_class;
if et.need_gc_mark_function then
body.append(
"rsoh*h=((rsoh*)o)-1;%N");
if not is_unmarked then
body.append(
"if((h->header.magic_flag)==RSOH_UNMARKED){%N");
end;
body.append(
"h->header.magic_flag=RSOH_MARKED;%N");
body.extend('{');
c_type_in(body);
body.remove_last(1);
body.extend(' ');
body.extend('e');
body.append(fz_00);
c_type_in(body);
body.append(
"p=((void*)(o+((((h->header.size)-sizeof(rsoh))/sizeof(e))-1)));%N%
%for(;((void*)p)>=((void*)o);p--){%N%
%e=*p;%N");
gc_handler.mark_for(body,"e",et_rc);
body.append("%N}%N}%N");
if not is_unmarked then
body.extend('}');
end;
else
body.append(
"(((rsoh*)o)-1)->header.magic_flag=RSOH_MARKED;%N");
end;
end;
feature {NONE}
frozen gc_na_env_in(str: STRING) is
do
str.append("na_env");
id.append_in(str);
end;
feature {TYPE}
frozen short_hook is
do
short_print.a_class_name(base_class_name);
short_print.hook_or("open_sb","[");
generic_list.first.short_hook;
short_print.hook_or("close_sb","]");
end;
feature {NONE}
make(sp: like start_position; of_what: TYPE) is
require
sp /= Void;
of_what /= Void
do
!!base_class_name.make(as_native_array,sp);
generic_list := <<of_what>>;
tmp_string.copy(as_native_array);
tmp_string.extend('[');
tmp_string.append(of_what.written_mark);
tmp_string.extend(']');
written_mark := string_aliaser.item(tmp_string);
ensure
start_position = sp
end;
make_runnable(sp: like start_position; of_what: TYPE) is
require
sp /= Void;
of_what.run_type = of_what
do
make(sp,of_what);
run_type := Current;
ensure
is_run_type;
written_mark = run_time_mark
end;
end -- TYPE_NATIVE_ARRAY