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-- Fixed-length lists.
-- Copyright (C) 2017 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 Types; use Types;
generic
type El_Type is range <>;
package Flists is
type Flist_Type is new Int32;
for Flist_Type'Size use 32;
-- Non-existing flist.
Null_Flist : constant Flist_Type := 0;
-- Predefined special flist that could be used as a marker.
Flist_Others : constant Flist_Type := 1;
Flist_All : constant Flist_Type := 2;
-- Create a new flist of length LEN. All the elements are initialized to
-- Null_Node.
function Create_Flist (Len : Natural) return Flist_Type;
-- Deallocate FLIST. Set to Null_Flist.
procedure Destroy_Flist (Flist : in out Flist_Type);
-- First and last index of FLIST. Could be used to iterate.
Ffirst : constant Natural := 0;
function Flast (Flist : Flist_Type) return Integer;
-- Return the length of FLIST.
function Length (Flist : Flist_Type) return Natural;
-- Get the N-th element of FLIST. First element has index 0.
function Get_Nth_Element (Flist : Flist_Type; N : Natural) return El_Type;
-- Set the N-th element of FLIST to V.
procedure Set_Nth_Element (Flist : Flist_Type; N : Natural; V : El_Type);
end Flists;
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