net.automatalib.ts.powerset.FastPowersetDTS Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of automata-core Show documentation

The core artifact of AutomataLib. This library contains concrete implementations for many of the automaton model interfaces defined in the API artifact, as well as abstract base classes that facilitate implementing new automaton model classes. Note that concrete algorithms (traversal, reachability analysis etc.) are not in the scope of this artifact.

There is a newer version: 0.11.0

Show newest version

/* Copyright (C) 2013-2018 TU Dortmund
 * This file is part of AutomataLib, http://www.automatalib.net/.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package net.automatalib.ts.powerset;

import java.util.Collection;
import java.util.HashSet;
import java.util.Set;

import net.automatalib.commons.util.nid.NumericID;
import net.automatalib.ts.DeterministicTransitionSystem;
import net.automatalib.ts.PowersetViewTS;
import net.automatalib.ts.TransitionSystem;

public class FastPowersetDTS
        implements DeterministicTransitionSystem, I, Set>,
                   PowersetViewTS, I, Set, S, T> {

    private final TransitionSystem ts;

    public FastPowersetDTS(TransitionSystem ts) {
        this.ts = ts;
    }

    @Override
    public FastPowersetState getInitialState() {
        FastPowersetState result = new FastPowersetState<>();
        for (S init : ts.getInitialStates()) {
            result.add(init, init.getId());
        }
        return result;
    }

    @Override
    public FastPowersetState getSuccessor(Set transition) {
        FastPowersetState succ = new FastPowersetState<>();
        for (T t : transition) {
            S succS = ts.getSuccessor(t);
            succ.add(succS, succS.getId());
        }

        return succ;
    }

    @Override
    public FastPowersetState getSuccessor(FastPowersetState state, I input) {
        FastPowersetState succ = new FastPowersetState<>();

        for (S s : state) {
            Collection succs = ts.getSuccessors(s, input);
            for (S succS : succs) {
                succ.add(succS, succS.getId());
            }
        }

        return succ;
    }

    @Override
    public Set getTransition(FastPowersetState state, I input) {
        Set result = new HashSet<>();
        for (S s : state) {
            Collection transitions = ts.getTransitions(s, input);
            result.addAll(transitions);
        }
        return result;
    }

    @Override
    public Collection getOriginalStates(FastPowersetState state) {
        return state;
    }

    @Override
    @SuppressWarnings("unchecked")
    public Collection getOriginalTransitions(Set transition) {
        return (Collection) transition;
    }

}