UnwrapUnnecessaryElse_Intention.java

package jetbrains.mps.baseLanguage.intentions;

/*Generated by MPS */

import jetbrains.mps.intentions.AbstractIntentionDescriptor;
import jetbrains.mps.openapi.intentions.IntentionFactory;
import java.util.Collection;
import jetbrains.mps.openapi.intentions.IntentionExecutable;
import jetbrains.mps.openapi.intentions.Kind;
import jetbrains.mps.smodel.SNodePointer;
import org.jetbrains.mps.openapi.model.SNode;
import jetbrains.mps.openapi.editor.EditorContext;
import jetbrains.mps.lang.smodel.generator.smodelAdapter.SLinkOperations;
import jetbrains.mps.smodel.adapter.structure.MetaAdapterFactory;
import jetbrains.mps.internal.collections.runtime.ListSequence;
import java.util.List;
import java.util.ArrayList;
import jetbrains.mps.lang.smodel.generator.smodelAdapter.SNodeOperations;
import jetbrains.mps.internal.collections.runtime.ISelector;
import jetbrains.mps.internal.collections.runtime.IWhereFilter;
import jetbrains.mps.smodel.action.SNodeFactoryOperations;
import jetbrains.mps.lang.dataFlow.framework.Program;
import jetbrains.mps.lang.dataFlow.DataFlow;
import java.util.Set;
import jetbrains.mps.internal.collections.runtime.SetSequence;
import java.util.Collections;
import jetbrains.mps.intentions.AbstractIntentionExecutable;
import jetbrains.mps.internal.collections.runtime.IVisitor;
import jetbrains.mps.openapi.intentions.IntentionDescriptor;

public final class UnwrapUnnecessaryElse_Intention extends AbstractIntentionDescriptor implements IntentionFactory {
  private Collection<IntentionExecutable> myCachedExecutable;
  public UnwrapUnnecessaryElse_Intention() {
    super(Kind.NORMAL, true, new SNodePointer("r:00000000-0000-4000-0000-011c895902c6(jetbrains.mps.baseLanguage.intentions)", "4513394054604028407"));
  }
  @Override
  public String getPresentation() {
    return "UnwrapUnnecessaryElse";
  }
  @Override
  public boolean isApplicable(final SNode node, final EditorContext editorContext) {
    if (!(isApplicableToNode(node, editorContext))) {
      return false;
    }
    return true;
  }
  private boolean isApplicableToNode(final SNode node, final EditorContext editorContext) {
    SNode trueBranch = SLinkOperations.getTarget(node, MetaAdapterFactory.getContainmentLink(0xf3061a5392264cc5L, 0xa443f952ceaf5816L, 0xf8cc56b217L, 0xf8cc56b219L, "ifTrue"));
    if ((SLinkOperations.getTarget(node, MetaAdapterFactory.getContainmentLink(0xf3061a5392264cc5L, 0xa443f952ceaf5816L, 0xf8cc56b217L, 0xfc092b6b76L, "ifFalseStatement")) == null) || ListSequence.fromList(SLinkOperations.getChildren(trueBranch, MetaAdapterFactory.getContainmentLink(0xf3061a5392264cc5L, 0xa443f952ceaf5816L, 0xf8cc56b200L, 0xf8cc6bf961L, "statement"))).isEmpty()) {
      return false;
    }

    List<SNode> branches = ListSequence.fromList(new ArrayList<SNode>());
    ListSequence.fromList(branches).addElement(SNodeOperations.copyNode(trueBranch));
    ListSequence.fromList(branches).addSequence(ListSequence.fromList(SLinkOperations.getChildren(node, MetaAdapterFactory.getContainmentLink(0xf3061a5392264cc5L, 0xa443f952ceaf5816L, 0xf8cc56b217L, 0x118cecf1287L, "elsifClauses"))).select(new ISelector<SNode, SNode>() {
      public SNode select(SNode it) {
        return SNodeOperations.copyNode(SLinkOperations.getTarget(it, MetaAdapterFactory.getContainmentLink(0xf3061a5392264cc5L, 0xa443f952ceaf5816L, 0x118ceceb41aL, 0x118ced0f8fdL, "statementList")));
      }
    }));

    return ListSequence.fromList(branches).all(new IWhereFilter<SNode>() {
      public boolean accept(SNode branch) {
        SNode clonedStatements = branch;
        SNode next = SNodeFactoryOperations.addNewChild(clonedStatements, MetaAdapterFactory.getContainmentLink(0xf3061a5392264cc5L, 0xa443f952ceaf5816L, 0xf8cc56b200L, 0xf8cc6bf961L, "statement"), SNodeFactoryOperations.asInstanceConcept(MetaAdapterFactory.getConcept(0xf3061a5392264cc5L, 0xa443f952ceaf5816L, 0xf8cc67c7f0L, "jetbrains.mps.baseLanguage.structure.LocalVariableDeclarationStatement")));

        Program program = DataFlow.buildProgram(clonedStatements);
        Set<SNode> unreachable = DataFlow.getUnreachableNodes(program);
        return SetSequence.fromSet(unreachable).contains(next);
      }
    });
  }
  @Override
  public boolean isSurroundWith() {
    return false;
  }
  public Collection<IntentionExecutable> instances(final SNode node, final EditorContext context) {
    if (myCachedExecutable == null) {
      myCachedExecutable = Collections.<IntentionExecutable>singletonList(new UnwrapUnnecessaryElse_Intention.IntentionImplementation());
    }
    return myCachedExecutable;
  }
  /*package*/ final class IntentionImplementation extends AbstractIntentionExecutable {
    public IntentionImplementation() {
    }
    @Override
    public String getDescription(final SNode node, final EditorContext editorContext) {
      return "Unwrap Unnecessary Else Branch";
    }
    @Override
    public void execute(final SNode node, final EditorContext editorContext) {
      SNode elseBranch = SLinkOperations.getTarget(node, MetaAdapterFactory.getContainmentLink(0xf3061a5392264cc5L, 0xa443f952ceaf5816L, 0xf8cc56b217L, 0xfc092b6b76L, "ifFalseStatement"));
      if (SNodeOperations.isInstanceOf(elseBranch, MetaAdapterFactory.getConcept(0xf3061a5392264cc5L, 0xa443f952ceaf5816L, 0xfc092b6b77L, "jetbrains.mps.baseLanguage.structure.BlockStatement"))) {
        List<SNode> reversed = ListSequence.fromList(SLinkOperations.getChildren(SLinkOperations.getTarget(SNodeOperations.cast(elseBranch, MetaAdapterFactory.getConcept(0xf3061a5392264cc5L, 0xa443f952ceaf5816L, 0xfc092b6b77L, "jetbrains.mps.baseLanguage.structure.BlockStatement")), MetaAdapterFactory.getContainmentLink(0xf3061a5392264cc5L, 0xa443f952ceaf5816L, 0xfc092b6b77L, 0xfc092b6b78L, "statements")), MetaAdapterFactory.getContainmentLink(0xf3061a5392264cc5L, 0xa443f952ceaf5816L, 0xf8cc56b200L, 0xf8cc6bf961L, "statement"))).reversedList();
        ListSequence.fromList(reversed).visitAll(new IVisitor<SNode>() {
          public void visit(SNode it) {
            SNodeOperations.insertNextSiblingChild(node, it);
          }
        });
      } else {
        SNodeOperations.insertNextSiblingChild(node, elseBranch);
      }
      SNodeOperations.deleteNode(elseBranch);
    }
    @Override
    public IntentionDescriptor getDescriptor() {
      return UnwrapUnnecessaryElse_Intention.this;
    }
  }
}