/*
* Copyright (c) 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017 David Berkman
*
* This file is part of the SmallMind Code Project.
*
* The SmallMind Code Project is free software, you can redistribute
* it and/or modify it under either, at your discretion...
*
* 1) The terms of GNU Affero General Public License as published by the
* Free Software Foundation, either version 3 of the License, or (at
* your option) any later version.
*
* ...or...
*
* 2) The terms of the Apache License, Version 2.0.
*
* The SmallMind Code Project 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 or Apache License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* and the Apache License along with the SmallMind Code Project. If not, see
* <http://www.gnu.org/licenses/> or <http://www.apache.org/licenses/LICENSE-2.0>.
*
* Additional permission under the GNU Affero GPL version 3 section 7
* ------------------------------------------------------------------
* If you modify this Program, or any covered work, by linking or
* combining it with other code, such other code is not for that reason
* alone subject to any of the requirements of the GNU Affero GPL
* version 3.
*/
package org.smallmind.nutsnbolts.reflection.type;
import java.util.Arrays;
public class TypeInference {
Class[] possibilities;
public void addPossibility (Class clazz) {
if (possibilities == null) {
possibilities = new Class[] {clazz};
}
else {
Class[] expandedPossibilities = new Class[possibilities.length + 1];
System.arraycopy(possibilities, 0, expandedPossibilities, 0, possibilities.length);
expandedPossibilities[possibilities.length] = clazz;
possibilities = expandedPossibilities;
}
}
public Class getInference () {
if (possibilities == null) {
throw new TypeInferenceException("No class inference could be made, please override the appropriate method to statically declare an appropriate type");
}
else if (possibilities.length > 1) {
throw new TypeInferenceException("Multiple inferences were possible (%s), please override the appropriate method to statically declare the appropriate type", Arrays.toString(possibilities));
}
return possibilities[0];
}
}