/* Copyright (C) 2013-2017 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.automata.transout;

import java.util.Collection;

import javax.annotation.ParametersAreNonnullByDefault;

import net.automatalib.automata.concepts.DetSuffixOutputAutomaton;
import net.automatalib.exception.UndefinedPropertyAccessException;
import net.automatalib.ts.transout.DeterministicTransitionOutputTS;
import net.automatalib.words.Word;
import net.automatalib.words.WordBuilder;

@ParametersAreNonnullByDefault
public interface TransitionOutputAutomaton<S, I, T, O>
        extends DetSuffixOutputAutomaton<S, I, T, Word<O>>, DeterministicTransitionOutputTS<S, I, T, O> {

    @Override
    default Word<O> computeStateOutput(S state, Iterable<? extends I> input) {
        WordBuilder<O> result;
        if (input instanceof Collection) {
            result = new WordBuilder<>(((Collection<?>) input).size());
        } else {
            result = new WordBuilder<>();
        }

        if (!trace(state, input, result)) {
            throw new UndefinedPropertyAccessException(
                    "No output can be computed because an intermediate state or transition output is undefined");
        }

        return result.toWord();
    }
}


/* Copyright (C) 2013-2017 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.automata.transout;

import java.util.Collection;

import javax.annotation.ParametersAreNonnullByDefault;

import net.automatalib.automata.concepts.DetSuffixOutputAutomaton;
import net.automatalib.ts.transout.DeterministicTransitionOutputTS;
import net.automatalib.words.Word;
import net.automatalib.words.WordBuilder;

@ParametersAreNonnullByDefault
public interface TransitionOutputAutomaton<S, I, T, O>
        extends DetSuffixOutputAutomaton<S, I, T, Word<O>>, DeterministicTransitionOutputTS<S, I, T, O> {

    @Override
    default Word<O> computeStateOutput(S state, Iterable<? extends I> input) {
        WordBuilder<O> result;
        if (input instanceof Collection) {
            result = new WordBuilder<>(((Collection<?>) input).size());
        } else {
            result = new WordBuilder<>();
        }

        trace(state, input, result);

        return result.toWord();
    }
}


revert parts of 35744b8