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-- String table.
-- Copyright (C) 2002, 2003, 2004, 2005 Tristan Gingold
--
-- This program 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 program 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 program. If not, see <gnu.org/licenses>.
with Tables;
package body Str_Table is
-- Be sure the elements are packed.
type El_Nat8 is new Nat8;
for El_Nat8'Size use 8;
package String8_Table is new Tables
(Table_Index_Type => String8_Id,
Table_Component_Type => El_Nat8,
Table_Low_Bound => Null_String8 + 1,
Table_Initial => 1024);
Cur_String8 : String8_Id := 0;
function Create_String8 return String8_Id is
begin
Cur_String8 := String8_Table.Last + 1;
return Cur_String8;
end Create_String8;
procedure Append_String8 (El : Nat8) is
begin
String8_Table.Append (El_Nat8 (El));
end Append_String8;
procedure Append_String8_Char (El : Character) is
begin
Append_String8 (Character'Pos (El));
end Append_String8_Char;
procedure Append_String8_String (S : String) is
begin
for I in S'Range loop
Append_String8_Char (S (I));
end loop;
end Append_String8_String;
procedure Resize_String8 (Len : Nat32) is
begin
String8_Table.Set_Last (Cur_String8 + String8_Id (Len) - 1);
end Resize_String8;
function Element_String8 (Id : String8_Id; N : Pos32) return Nat8 is
begin
return Nat8 (String8_Table.Table (Id + String8_Id (N - 1)));
end Element_String8;
procedure Set_Element_String8 (Id : String8_Id; N : Pos32; Val : Nat8) is
begin
String8_Table.Table (Id + String8_Id (N - 1)) := El_Nat8 (Val);
end Set_Element_String8;
function Char_String8 (Id : String8_Id; N : Pos32) return Character is
begin
return Character'Val (Element_String8 (Id, N));
end Char_String8;
function String_String8 (Id : String8_Id; Len : Nat32) return String
is
Res : String (1 .. Natural (Len));
begin
for I in 1 .. Len loop
Res (Natural (I)) := Char_String8 (Id, I);
end loop;
return Res;
end String_String8;
function String8_Address (Id : String8_Id) return System.Address is
begin
return String8_Table.Table (Id)'Address;
end String8_Address;
procedure Initialize is
begin
String8_Table.Init;
end Initialize;
procedure Finalize is
begin
String8_Table.Free;
end Finalize;
end Str_Table;
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