/*
* Copyright 2003-2011 JetBrains s.r.o.
*
* 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 jetbrains.mps.newTypesystem.operation.equation;
import jetbrains.mps.newTypesystem.operation.PresentationKind;
import jetbrains.mps.newTypesystem.state.State;
import org.jetbrains.mps.openapi.model.SNode;
import jetbrains.mps.typesystem.inference.EquationInfo;
public class AddEquationOperation extends AbstractEquationOperation {
public AddEquationOperation(SNode child, SNode parent, SNode source, EquationInfo info) {
super(child, parent, source, info);
}
@Override
public void doUndo(State state) {
state.getEquations().remove(myChild);
}
@Override
public void doRedo(jetbrains.mps.newTypesystem.state.State state) {
state.getEquations().add(myChild, myParent);
}
@Override
public void execute(State state) {
super.execute(state);
state.substitute(myChild, myParent);
state.getInequalities().onEquationAdded(myChild, myParent);
}
public SNode getChild() {
return myChild;
}
public SNode getParent() {
return myParent;
}
@Override
public String getPresentation() {
return getShortPresentation()+ " added";
}
@Override
public String getPresentationKind() {
return PresentationKind.EQUATION_ADDED;
}
}