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1996-09-28
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3KB
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68 lines
------------------------------------------------------------------------------
-- --
-- GNAT RUNTIME COMPONENTS --
-- --
-- S Y S T E M . W W D _ E N U M --
-- --
-- S p e c --
-- --
-- $Revision: 1.4 $ --
-- --
-- Copyright (c) 1992,1993,1994,1995 NYU, All Rights Reserved --
-- --
-- The GNAT library is free software; you can redistribute it and/or modify --
-- it under terms of the GNU Library General Public License as published by --
-- the Free Software Foundation; either version 2, or (at your option) any --
-- later version. The GNAT library 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 --
-- Library General Public License for more details. You should have --
-- received a copy of the GNU Library General Public License along with --
-- the GNAT library; see the file COPYING.LIB. If not, write to the Free --
-- Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. --
-- --
------------------------------------------------------------------------------
with Unchecked_Conversion;
with System.WCh_StW; use System.WCh_StW;
with System.WCh_Con; use System.WCh_Con;
package body System.WWd_Enum is
----------------------------
-- Wide_Width_Enumeration --
----------------------------
function Wide_Width_Enumeration
(Table : Address;
Lo, Hi : Natural;
EM : WC_Encoding_Method)
return Natural
is
type String_Access is access String;
type Enum_Table is array (Natural) of String_Access;
type Enum_Table_Ptr is access Enum_Table;
function A_To_T is new Unchecked_Conversion (Address, Enum_Table_Ptr);
T : constant Enum_Table_Ptr := A_To_T (Table);
W : Natural;
begin
W := 0;
for J in Lo .. Hi loop
declare
WS : constant Wide_String :=
String_To_Wide_String (T (J).all, EM);
begin
W := Natural'Max (W, WS'Length);
end;
end loop;
return W;
end Wide_Width_Enumeration;
end System.WWd_Enum;