TraverseUtil.java

package jetbrains.mps.lang.generator.generationContext.constraints;

/*Generated by MPS */

import org.jetbrains.mps.openapi.model.SNode;
import jetbrains.mps.lang.smodel.generator.smodelAdapter.SNodeOperations;
import jetbrains.mps.smodel.adapter.structure.MetaAdapterFactory;
import jetbrains.mps.internal.collections.runtime.Sequence;
import jetbrains.mps.lang.smodel.generator.smodelAdapter.SLinkOperations;

public class TraverseUtil {
  public TraverseUtil() {
  }
  public static SNode parent(SNode n) {
    if (SNodeOperations.isAttribute(n)) {
      if (SNodeOperations.isInstanceOf(n, MetaAdapterFactory.getConcept(0xceab519525ea4f22L, 0x9b92103b95ca8c0cL, 0x2eb1ad060897da54L, "jetbrains.mps.lang.core.structure.NodeAttribute"))) {
        SNode next = SNodeOperations.getPrevSibling(n);
        while (next != null) {
          if (SNodeOperations.isInstanceOf(next, MetaAdapterFactory.getConcept(0xceab519525ea4f22L, 0x9b92103b95ca8c0cL, 0x2eb1ad060897da54L, "jetbrains.mps.lang.core.structure.NodeAttribute"))) {
            return next;
          }
          next = SNodeOperations.getPrevSibling(next);
        }
        n = SNodeOperations.getParent(n);
        return (n == null ? null : SNodeOperations.getParent(n));
      }
      return SNodeOperations.getParent(n);
    }
    SNode lastAttr = Sequence.fromIterable(SNodeOperations.ofConcept(SLinkOperations.getChildren(SNodeOperations.cast(n, MetaAdapterFactory.getConcept(0xceab519525ea4f22L, 0x9b92103b95ca8c0cL, 0x10802efe25aL, "jetbrains.mps.lang.core.structure.BaseConcept")), MetaAdapterFactory.getContainmentLink(0xceab519525ea4f22L, 0x9b92103b95ca8c0cL, 0x10802efe25aL, 0x47bf8397520e5942L, "smodelAttribute")), MetaAdapterFactory.getConcept(0xceab519525ea4f22L, 0x9b92103b95ca8c0cL, 0x2eb1ad060897da54L, "jetbrains.mps.lang.core.structure.NodeAttribute"))).last();
    if ((lastAttr != null)) {
      return lastAttr;
    }

    return SNodeOperations.getParent(n);
  }
}