CompositeProjectStrategy.java

package jetbrains.mps.tool.environment;

/*Generated by MPS */

import org.jetbrains.annotations.NotNull;
import jetbrains.mps.project.Project;
import org.jetbrains.annotations.Nullable;

public class CompositeProjectStrategy implements ProjectStrategy {
  private final ProjectStrategy[] myStrategies;

  public CompositeProjectStrategy(ProjectStrategy... strategies) {
    myStrategies = strategies;
  }

  @NotNull
  @Override
  public Project create(@NotNull Environment env) {
    ProjectStrategy firstApplicable = getFirstApplicable();
    if (firstApplicable != null) {
      return firstApplicable.create(env);
    }
    throw new IllegalStateException("Could not create project with given strategies, nothing is applicable");
  }

  @Override
  public boolean isApplicable() {
    return getFirstApplicable() != null;
  }

  @Nullable
  private ProjectStrategy getFirstApplicable() {
    for (ProjectStrategy strategy : myStrategies) {
      if (strategy.isApplicable()) {
        return strategy;
      }
    }
    return null;
  }
}