/*
 * Copyright 2003-2015 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.constraints;

import jetbrains.mps.project.GlobalOperationContext;
import jetbrains.mps.smodel.IOperationContext;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import org.jetbrains.mps.openapi.model.SModel;
import org.jetbrains.mps.openapi.model.SNode;
import org.jetbrains.mps.openapi.module.SModule;

/* package */ class ModelConstraintsUtils {
  // helper class

  @NotNull
  public static IOperationContext getOperationContext(@Nullable SModule module) {
    // TODO: remove usages of this method as much as can!
    return module != null ? new ConstraintsOperationContext(module) : new GlobalOperationContext();
  }

  @Nullable
  public static SModule getModule(@Nullable SNode node) {
    return node != null ? getModule(node.getModel()) : null;
  }

  @Nullable
  public static SModule getModule(@Nullable SModel model) {
    if (model == null) {
      return null;
    }
    return model.getModule();
  }
}
