package org.checkerframework.dataflow.cfg.block;

import java.util.List;
import org.checkerframework.checker.nullness.qual.Nullable;
import org.checkerframework.dataflow.cfg.node.Node;
import org.checkerframework.dataflow.qual.Pure;

/** A regular basic block that contains a sequence of {@link Node}s. */
public interface RegularBlock extends SingleSuccessorBlock {

  /**
   * Returns the unmodifiable sequence of {@link Node}s.
   *
   * @return the unmodifiable sequence of {@link Node}s
   * @deprecated use {@link #getNodes} instead
   */
  @Deprecated // 2020-08-05
  @Pure
  List<Node> getContents();

  /**
   * Returns the regular successor block.
   *
   * @return the regular successor block
   */
  @Pure
  @Nullable Block getRegularSuccessor();

  /** Is this block empty (i.e., does it not contain any contents). */
  @Pure
  boolean isEmpty();
}