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/* Copyright (C) 2013-2019 TU Dortmund
* This file is part of LearnLib, http://www.learnlib.de/.
*
* 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 de.learnlib.mapper;
import de.learnlib.api.SUL;
import de.learnlib.api.exception.SULException;
import de.learnlib.mapper.api.ContextExecutableInput;
/**
* Abstract base class for a {@link SUL} that step-wisely executes {@link ContextExecutableInput} symbols.
*
* This class does not specify how contexts are created and disposed of, but declares abstract methods for these tasks.
*
* @param
* input symbol type
* @param
* output symbol type
* @param
* context type
*
* @author Malte Isberner
*/
public abstract class AbstractContextExecutableInputSUL, O, C>
implements SUL {
private C currentContext;
@Override
public void pre() {
this.currentContext = createContext();
}
protected abstract C createContext();
@Override
public void post() {
disposeContext(currentContext);
currentContext = null;
}
protected abstract void disposeContext(C context);
@Override
public O step(I in) throws SULException {
return in.execute(currentContext);
}
}