-- --
-- procedure Copyright (c) Dmitry A. Kazakov --
-- Parsers.Generic_Source. Luebeck --
-- Get_Ada_2005_Blank Winter, 2009 --
-- Implementation --
-- --
-- Last revision : 15:03 28 Mar 2009 --
-- --
-- This library 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 of --
-- the License, or (at your option) any later version. This 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 --
-- General Public License for more details. You should have --
-- received a copy of the GNU General Public License along with --
-- this library; if not, write to the Free Software Foundation, --
-- Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. --
-- --
-- As a special exception, if other files instantiate generics from --
-- this unit, or you link this unit with other files to produce an --
-- executable, this unit does not by itself cause the resulting --
-- executable to be covered by the GNU General Public License. This --
-- exception does not however invalidate any other reasons why the --
-- executable file might be covered by the GNU Public License. --
--____________________________________________________________________--
with Ada.Exceptions; use Ada.Exceptions;
with Ada.IO_Exceptions; use Ada.IO_Exceptions;
with Ada.Strings.Maps; use Ada.Strings.Maps;
with Strings_Edit; use Strings_Edit;
with Strings_Edit.UTF8; use Strings_Edit.UTF8;
with Strings_Edit.UTF8.Categorization;
procedure Parsers.Generic_Source.Get_Ada_2005_Blank
( Code : in out Source_Type;
Got_It : out Boolean
) is
use Strings_Edit.UTF8.Categorization;
Buffer : Line_Ptr_Type;
Pointer : Integer;
Start : Integer;
Last : Integer;
begin
loop
Get_Line (Code, Buffer, Pointer, Last);
declare
Line : String renames Buffer (Buffer'First..Last);
Symbol : UTF8_Code_Point;
begin
while Pointer <= Line'Last loop
begin
Start := Pointer;
Get (Line, Pointer, Symbol);
exception
when Data_Error =>
Set_Pointer (Code, Start);
Raise_Exception
( Syntax_Error'Identity,
"Illegal UTF-8 encoding at " & Image (Link (Code))
);
end;
case Symbol is
when 16#09# | 16#20# => -- HT or SP (blank)
null;
when 16#0A#..16#0D# => -- LF, VT, FF, CR (line end)
exit;
when 16#2D# => -- Minus
exit when
( Pointer <= Line'Last -- Ada comment
and then
Line (Pointer) = '-'
);
Got_It := True;
Set_Pointer (Code, Start);
return;
when others =>
if Category (Symbol) /= Zs then -- Not a space
Got_It := True;
Set_Pointer (Code, Start);
return;
end if;
end case;
end loop;
Set_Pointer (Code, Line'Last + 1);
end;
Next_Line (Code);
end loop;
exception
when End_Error =>
Got_It := False;
end Parsers.Generic_Source.Get_Ada_2005_Blank;