Scope.java

package jetbrains.mps.scope;

/*Generated by MPS */

import org.jetbrains.mps.openapi.model.SNode;
import org.jetbrains.annotations.Nullable;
import jetbrains.mps.internal.collections.runtime.Sequence;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.mps.openapi.language.SAbstractConcept;
import jetbrains.mps.lang.smodel.generator.smodelAdapter.SNodeOperations;
import jetbrains.mps.smodel.adapter.structure.MetaAdapterFactory;
import jetbrains.mps.smodel.behaviour.BHReflection;
import jetbrains.mps.core.aspects.behaviour.SMethodTrimmedId;
import org.jetbrains.mps.openapi.language.SContainmentLink;
import jetbrains.mps.internal.collections.runtime.ListSequence;
import jetbrains.mps.lang.smodel.generator.smodelAdapter.SLinkOperations;
import jetbrains.mps.internal.collections.runtime.IWhereFilter;

public abstract class Scope {
  public Scope() {
  }
  /**
   * Returns all available elements in the scope.
   * 
   * @param prefix (if not null) filters out elements whose reference text doesn't start with prefix
   * @return list of nodes in the scope
   */
  public abstract Iterable<SNode> getAvailableElements(@Nullable String prefix);
  /**
   * Returns <tt>true</tt> if this scope contains the specified element.
   * 
   * Invariant: contains(node) == getAvailableElements(null).contains(node)
   * 
   * @param node element to check presence for
   * @return <tt>true</tt> if this scope contains the specified element
   */
  public boolean contains(SNode node) {
    return Sequence.fromIterable(getAvailableElements(null)).contains(node);
  }
  /**
   * Resolves element by reference text.
   * 
   * Invariant: getReferenceText(contextNode, resolve(contextNode, refText)) == refText
   * 
   * @param contextNode source node for the reference, or its nearest parent node (if source node is unavailable)
   * @param refText reference text
   * @return resolved element when reference text unambiguously identifies element, null otherwise
   */
  @Nullable
  public abstract SNode resolve(SNode contextNode, @NotNull String refText);
  /**
   * Creates textual reference for scope element. If element has no textual representation
   * for the reference, returns null.
   * 
   * Invariant: resolve(contextNode, getReferenceText(contextNode, node)) == node
   * 
   * @param contextNode source node for the reference, or its nearest parent node (if source node is unavailable)
   * @param node element from the current scope (contains(node) == true)
   * @return reference text for the node element in the current scope
   */
  @Nullable
  public abstract String getReferenceText(SNode contextNode, @NotNull SNode node);
  /**
   * Get scope for existing node.
   */
  public static Scope getScope(SNode node, SNode fromChild, SAbstractConcept kind) {
    SNode curr = node;
    SNode prev = fromChild;
    while (curr != null) {
      if (SNodeOperations.isInstanceOf(curr, MetaAdapterFactory.getInterfaceConcept(0xceab519525ea4f22L, 0x9b92103b95ca8c0cL, 0x33d23ee961a0cbf3L, "jetbrains.mps.lang.core.structure.ScopeProvider"))) {
        Scope scope = ((Scope) BHReflection.invoke(SNodeOperations.cast(curr, MetaAdapterFactory.getInterfaceConcept(0xceab519525ea4f22L, 0x9b92103b95ca8c0cL, 0x33d23ee961a0cbf3L, "jetbrains.mps.lang.core.structure.ScopeProvider")), SMethodTrimmedId.create("getScope", null, "52_Geb4QDV$"), kind, prev));
        if (scope != null) {
          return scope;
        }
      }
      prev = curr;
      curr = parent(curr);
    }
    return null;
  }
  /**
   * Get scope for smart reference, when node doesn't exist yet
   */
  public static Scope getScope(SNode node, SContainmentLink link, int index, SAbstractConcept kind) {
    if (SNodeOperations.isInstanceOf(node, MetaAdapterFactory.getInterfaceConcept(0xceab519525ea4f22L, 0x9b92103b95ca8c0cL, 0x33d23ee961a0cbf3L, "jetbrains.mps.lang.core.structure.ScopeProvider"))) {
      Scope scope = ((Scope) BHReflection.invoke(SNodeOperations.cast(node, MetaAdapterFactory.getInterfaceConcept(0xceab519525ea4f22L, 0x9b92103b95ca8c0cL, 0x33d23ee961a0cbf3L, "jetbrains.mps.lang.core.structure.ScopeProvider")), SMethodTrimmedId.create("getScope", null, "52_Geb4QFgX"), kind, link, ((int) index)));
      if (scope != null) {
        return scope;
      }
    }
    return getScope(parent(node), node, kind);
  }

  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 = ListSequence.fromList(SLinkOperations.getChildren(SNodeOperations.cast(n, MetaAdapterFactory.getConcept(0xceab519525ea4f22L, 0x9b92103b95ca8c0cL, 0x10802efe25aL, "jetbrains.mps.lang.core.structure.BaseConcept")), MetaAdapterFactory.getContainmentLink(0xceab519525ea4f22L, 0x9b92103b95ca8c0cL, 0x10802efe25aL, 0x47bf8397520e5942L, "smodelAttribute"))).where(new IWhereFilter<SNode>() {
      public boolean accept(SNode it) {
        return SNodeOperations.isInstanceOf(it, MetaAdapterFactory.getConcept(0xceab519525ea4f22L, 0x9b92103b95ca8c0cL, 0x2eb1ad060897da54L, "jetbrains.mps.lang.core.structure.NodeAttribute"));
      }
    }).last();
    if ((lastAttr != null)) {
      return lastAttr;
    }

    return SNodeOperations.getParent(n);
  }
}