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|
-- This file is part of SmartEiffel The GNU Eiffel Compiler Tools and Libraries
--
-- SmartEiffel 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.
-- SmartEiffel 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 SmartEiffel; see the file COPYING. If not, write to
-- the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
-- MA 02111-1307, USA.
--
-- Copyright(C) 1994-2002: INRIA - LORIA (INRIA Lorraine) - ESIAL U.H.P.
-- - University of Nancy 1 - FRANCE
-- Copyright(C) 2003: INRIA - LORIA (INRIA Lorraine) - I.U.T. Charlemagne
-- - University of Nancy 2 - FRANCE
--
-- Dominique COLNET, Suzanne COLLIN, Olivier ZENDRA,
-- Philippe RIBET, Cyril ADRIAN
--
-- http://SmartEiffel.loria.fr - SmartEiffel@loria.fr
--
class ID_PROVIDER
--
-- Unique object in charge of some id providing.
--
inherit
GLOBALS
VISITABLE
creation make
feature {ID_PROVIDER_VISITOR}
accept(visitor: ID_PROVIDER_VISITOR) is
do
visitor.visit_id_provider(Current)
end
feature {SMART_EIFFEL}
max_id: INTEGER_16
-- Last already assigned `id'. Maximum 15 bits (see POSITION), so
-- INTEGER_16 is ok (bit#16 is the sign)
feature {COMPILE_TO_C}
disk_save is
local
i, id: INTEGER_16; tfw: TEXT_FILE_WRITE; str: STRING
do
create tfw.make
echo.tfw_connect(tfw,system_tools.id_file_path)
from
i := 1
until
i > id_memory.count
loop
str := id_memory.key(i)
id := id_memory.item(i)
tfw.put_integer(id)
tfw.put_character(' ')
tfw.put_character('%"')
tfw.put_string(str)
tfw.put_character('%"')
tfw.put_character(' ')
smart_eiffel.id_extra_information(tfw,str)
tfw.put_character('#')
tfw.put_character('%N')
i := i + 1
end
tfw.disconnect
end
feature {PARSER, BASE_CLASS, RUN_CLASS, C_PRETTY_PRINTER}
item(str: STRING): INTEGER_16 is
require
str = string_aliaser.item(str)
local
p: POSITION
do
if id_memory.has(str) then
Result := id_memory.at(str)
elseif max_id = p.maximum_free_id then
error_handler.append(once "Too many live types (the maximum is ")
error_handler.append_integer(p.maximum_free_id)
error_handler.append(once "). Cannot go on: please send a mail at smarteiffel@loria.fr")
error_handler.print_as_fatal_error
else
max_id := max_id + 1
Result := max_id
id_memory.add(Result,str)
end
end
feature {POSITION}
alias_of(id: INTEGER_16): STRING is
do
Result := id_memory.fast_key_at(id)
end
feature {NONE}
id_memory: DICTIONARY[INTEGER_16,STRING] is
once
create Result.with_capacity(2048)
end
make is
do
id_memory.put(0,as_none)
id_memory.put(1,as_integer_8)
id_memory.put(2,as_integer)
id_memory.put(2,as_integer_32)
id_memory.put(3,as_character)
id_memory.put(4,as_real)
id_memory.put(5,as_double)
id_memory.put(6,as_boolean)
id_memory.put(7,as_string)
id_memory.put(8,as_pointer)
id_memory.put(9,as_native_array_character)
id_memory.put(10,as_integer_16)
id_memory.put(11,as_integer_64)
max_id := 11
if not smart_eiffel.no_id then
disk_restore
end
end
disk_restore is
local
cc: CHARACTER; type_name: STRING; id, item_count: INTEGER_16
tfr: TEXT_FILE_READ; state: INTEGER_8
predefined_ids: INTEGER
do
predefined_ids := max_id
!!tfr.make
echo.tfr_connect(tfr,system_tools.id_file_path)
if tfr.is_connected then
from
if tfr.end_of_input then
state := 6
end
until
state > 4
loop
tfr.read_character
if tfr.end_of_input then
state := 5
else
cc := tfr.last_character
end
inspect
state
when 0 then -- Waiting first digit of `id'.
inspect
cc
when ' ', '%R', '%N', '%T' then
when '0' .. '9' then
id := cc.decimal_value
state := 1
else
state := 6
end
when 1 then -- Inside `id'.
inspect
cc
when '0' ..'9' then
id := id * 10 + cc.decimal_value
when '%"' then
type_name := temporary_type_name
type_name.clear
state := 3
when ' ', '%T' then
state := 2
else
state := 6
end
when 2 then -- Waiting opening ".
inspect
cc
when '%"' then
type_name := temporary_type_name
type_name.clear
state := 3
when ' ', '%T', '%N', '%R' then
else
state := 6
end
when 3 then -- Inside `type_name'.
inspect
cc
when '%"' then
item_count := item_count + 1
if id > predefined_ids then
type_name := string_aliaser.item(type_name)
id_memory.put(id, type_name)
max_id := max_id.max(id)
end
state := 4
when '%N', '%R', '%T' then
state := 6
else
type_name.extend(cc)
end
when 4 then -- Waiting end of type ('#').
inspect
cc
when '#' then
state := 0
else
end
else
end
end
tfr.disconnect
if state = 6 then -- Error final state.
echo.put_string("Corrupted *.id file (after ")
echo.put_integer(item_count)
echo.put_string(" correct items).%N")
else
check
state = 5
end
-- Final success state.
end
echo.put_string(once "Previous IDs reloaded (max_id = ")
echo.put_integer(max_id)
echo.put_string(once ").%N")
end
end
temporary_type_name: STRING is
once
create Result.make(128)
end
end -- ID_PROVIDER
|
