/*
* Copyright 2003-2016 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.smodel.loading;
/**
* Mix-in for {@link jetbrains.mps.extapi.model.SModelData} to guard model modification that
* happens outside of general model access mechanism, e.g. due to partial model loading.
*
* @implNote It's unspecified whether implementation shall block on subsequent {@link #enterUpdateMode()} from different
* threads. Once it's certain whether there's need in the block, the contract may get changed.
*
* @author Artem Tikhomirov
* @since 3.4
*/
public interface UpdateModeSupport {
void enterUpdateMode();
void leaveUpdateMode();
}