Helfer UndoSerno

Jan Burse, erstellt 30. Jul 2019
package jekpro.model.molec;
import jekpro.model.inter.Engine;
import matula.util.data.AbstractMap;
import matula.util.data.MapEntry;
/**
* <p>The class provides a varmap number undo.</p>
* <p/>
* Warranty & Liability
* To the extent permitted by applicable law and unless explicitly
* otherwise agreed upon, XLOG Technologies GmbH makes no warranties
* regarding the provided information. XLOG Technologies GmbH assumes
* no liability that any problems might be solved with the information
* provided by XLOG Technologies GmbH.
* <p/>
* Rights & License
* All industrial property rights regarding the information - copyright
* and patent rights in particular - are the sole property of XLOG
* Technologies GmbH. If the company was not the originator of some
* excerpts, XLOG Technologies GmbH has at least obtained the right to
* reproduce, change and translate the information.
* <p/>
* Reproduction is restricted to the whole unaltered document. Reproduction
* of the information is only allowed for non-commercial uses. Selling,
* giving away or letting of the execution of the library is prohibited.
* The library can be distributed as part of your applications and libraries
* for execution provided this comment remains unchanged.
* <p/>
* Restrictions
* Only to be distributed with programs that add significant and primary
* functionality to the library. Not to be distributed with additional
* software intended to replace any components of the library.
* <p/>
* Trademarks
* Jekejeke is a registered trademark of XLOG Technologies GmbH.
*/
public final class UndoSerno extends AbstractUndo {
private final BindUniv univ;
/**
* <p>Create a varmap undo.</p>
*
* @param bc The bind univ.
*/
private UndoSerno(BindUniv bc) {
univ = bc;
}
/**
* <p>Retrieve the univ.</p>
*
* @return The univ.
*/
public BindUniv getUniv() {
return univ;
}
/**
* <p>Reset the varmap.</p>
*
* @param en The engine.
*/
public void unbind(Engine en) {
AbstractMap<BindUniv, Integer> map = en.visor.varmap;
MapEntry<BindUniv, Integer> entry = map.getEntry(univ);
if (entry == null)
throw new IllegalStateException("value missing");
map.removeEntry(entry);
map.resize();
removeBind(en);
}
/**
* <p>Set a new varmap.</p>
*
* @param bc The bind univ.
* @param en The engine.
* @return The new varmap.
*/
public static Integer bindSerno(BindUniv bc, Engine en) {
AbstractMap<BindUniv, Integer> map = en.visor.varmap;
Integer val = Integer.valueOf(map.totalSize());
map.add(bc, val);
UndoSerno bs = new UndoSerno(bc);
bs.addBind(en);
return val;
}
}

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