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36-- Mcode back-end for ortho.
-- Copyright (C) 2006 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 Ada.Text_IO;
with Tables;
package body Ortho_Ident is
package Ids is new Tables
(Table_Component_Type => Natural,
Table_Index_Type => O_Ident,
Table_Low_Bound => 2,
Table_Initial => 128);
package Strs is new Tables
(Table_Component_Type => Character,
Table_Index_Type => Natural,
Table_Low_Bound => 2,
Table_Initial => 128);
function Get_Identifier (Str : String) return O_Ident
is
Start : Natural;
begin
Start := Strs.Allocate (Str'Length + 1);
for I in Str'Range loop
-- Identifiers are NULL terminated, so they cannot have any
-- embedded NULL.
pragma Assert (Str (I) /= ASCII.NUL);
Strs.Table (Start + I - Str'First) := Str (I);
end loop;
Strs.Table (Start + Str'Length) := ASCII.NUL;
Ids.Append (Start);
return Ids.Last;
end Get_Identifier;
function Is_Equal (L, R : O_Ident) return Boolean
is
begin
return L = R;
end Is_Equal;
function Get_String_Length (Id : O_Ident) return Natural
is
Start : Natural;
begin
Start := Ids.Table (Id);
if Id = Ids.Last then
return Strs.Last - Start + 1 - 1;
else
return Ids.Table (Id + 1) |