| package org.checkerframework.dataflow.cfg.node; |
| |
| import com.sun.source.tree.Tree; |
| import java.util.Collection; |
| import java.util.Collections; |
| import java.util.Objects; |
| import javax.lang.model.type.TypeKind; |
| import javax.lang.model.util.Types; |
| import org.checkerframework.checker.nullness.qual.Nullable; |
| |
| /** |
| * This represents the start and end of synchronized code block. If startOfBlock == true it is the |
| * node preceding a synchronized code block. Otherwise it is the node immediately after a |
| * synchronized code block. |
| */ |
| public class SynchronizedNode extends Node { |
| |
| protected final @Nullable Tree tree; |
| protected final Node expression; |
| protected final boolean startOfBlock; |
| |
| public SynchronizedNode(@Nullable Tree tree, Node expression, boolean startOfBlock, Types types) { |
| super(types.getNoType(TypeKind.NONE)); |
| this.tree = tree; |
| this.expression = expression; |
| this.startOfBlock = startOfBlock; |
| } |
| |
| @Override |
| public @Nullable Tree getTree() { |
| return tree; |
| } |
| |
| public Node getExpression() { |
| return expression; |
| } |
| |
| public boolean getIsStartOfBlock() { |
| return startOfBlock; |
| } |
| |
| @Override |
| public <R, P> R accept(NodeVisitor<R, P> visitor, P p) { |
| return visitor.visitSynchronized(this, p); |
| } |
| |
| @Override |
| public String toString() { |
| StringBuilder sb = new StringBuilder(); |
| sb.append("synchronized ("); |
| sb.append(expression); |
| sb.append(")"); |
| return sb.toString(); |
| } |
| |
| @Override |
| public boolean equals(@Nullable Object obj) { |
| if (!(obj instanceof SynchronizedNode)) { |
| return false; |
| } |
| SynchronizedNode other = (SynchronizedNode) obj; |
| return Objects.equals(getTree(), other.getTree()) |
| && getExpression().equals(other.getExpression()) |
| && startOfBlock == other.startOfBlock; |
| } |
| |
| @Override |
| public int hashCode() { |
| return Objects.hash(tree, startOfBlock, getExpression()); |
| } |
| |
| @Override |
| public Collection<Node> getOperands() { |
| return Collections.emptyList(); |
| } |
| } |