| package org.checkerframework.dataflow.cfg.node; |
| |
| import com.sun.source.tree.Tree.Kind; |
| import com.sun.source.tree.UnaryTree; |
| import java.util.Objects; |
| import org.checkerframework.checker.nullness.qual.Nullable; |
| |
| /** |
| * A node for a conditional not expression: |
| * |
| * <pre> |
| * ! <em>expression</em> |
| * </pre> |
| */ |
| public class ConditionalNotNode extends UnaryOperationNode { |
| |
| /** |
| * Create a new ConditionalNotNode. |
| * |
| * @param tree the logical-complement tree for this node |
| * @param operand the boolean expression being negated |
| */ |
| public ConditionalNotNode(UnaryTree tree, Node operand) { |
| super(tree, operand); |
| assert tree.getKind() == Kind.LOGICAL_COMPLEMENT; |
| } |
| |
| @Override |
| public <R, P> R accept(NodeVisitor<R, P> visitor, P p) { |
| return visitor.visitConditionalNot(this, p); |
| } |
| |
| @Override |
| public String toString() { |
| return "(!" + getOperand() + ")"; |
| } |
| |
| @Override |
| public boolean equals(@Nullable Object obj) { |
| if (!(obj instanceof ConditionalNotNode)) { |
| return false; |
| } |
| ConditionalNotNode other = (ConditionalNotNode) obj; |
| return getOperand().equals(other.getOperand()); |
| } |
| |
| @Override |
| public int hashCode() { |
| return Objects.hash(ConditionalNotNode.class, getOperand()); |
| } |
| } |