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method_info.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 METHOD_INFO
--
-- Unique Global Object in charge of a method_info as
-- describe in the JVM specification.
-- Obviously, the same object is recycled.
--
inherit GLOBALS;
feature {NONE}
count: INTEGER;
-- Number of methods.
storage: STRING is
-- To store the final JVM `method_info'.
once
!!Result.make(4096);
end;
access_flags: INTEGER;
name_index: INTEGER;
-- Memorize the name_index in the `constant_pool'.
descriptor_index: INTEGER;
-- Memorize the descriptor_index in the `constant_pool'.
feature {JVM}
clear is
do
count := 0;
storage.clear;
end;
write_bytes is
do
echo.print_count("method",count);
jvm.b_put_u2(count);
jvm.b_put_byte_string(storage);
end;
feature {RUN_FEATURE,JVM,SWITCH}
start(flags: INTEGER; name_key, descriptor: STRING;) is
require
not name_key.empty;
not descriptor.empty
do
code_attribute.clear;
count := count + 1;
access_flags := flags;
name_index := constant_pool.idx_utf8(name_key);
descriptor_index := constant_pool.idx_utf8(descriptor);
ensure
access_flags = flags
end;
finish is
do
-- access_flag :
append_u2(storage,access_flags);
append_u2(storage,name_index);
append_u2(storage,descriptor_index);
-- attributes_count :
append_u2(storage,1);
code_attribute.store_in(storage);
end;
add_init(super: STRING) is
local
ca: like code_attribute;
idx: INTEGER;
do
start(1,fz_35,fz_29);
ca := code_attribute;
ca.opcode_aload_0;
idx := constant_pool.idx_methodref3(super,fz_35,fz_29);
ca.opcode_invokespecial(idx,-1);
ca.opcode_return;
finish;
end;
end -- METHOD_INFO