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-- PSL - Optimize NFA
-- Copyright (C) 2002-2016 Tristan Gingold
--
-- GHDL 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, or (at your option) any later
-- version.
--
-- GHDL 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 GHDL; see the file COPYING. If not, write to the Free
-- Software Foundation, 59 Temple Place - Suite 330, Boston, MA
-- 02111-1307, USA.
with PSL.NFAs; use PSL.NFAs;
with PSL.Nodes; use PSL.Nodes;
package PSL.Optimize is
-- Remove unreachable states, ie
-- * states that can't be reach from the start state.
-- * states that can't reach the final state.
-- O(N) algorithm.
procedure Remove_Unreachable_States (N : NFA);
-- Remove single prefix, ie edges to a state S that is also from start
-- to S.
-- O(M) algorithm.
procedure Remove_Simple_Prefix (N : NFA);
procedure Merge_Identical_States (N : NFA);
procedure Merge_Edges (N : NFA);
procedure Remove_Identical_Src_Edges (S : NFA_State);
procedure Remove_Identical_Dest_Edges (S : NFA_State);
--procedure Find_Partitions (N : NFA; Nbr_States : Natural);
end PSL.Optimize;
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