| package org.checkerframework.dataflow.cfg.node; |
| |
| import com.sun.source.tree.Tree.Kind; |
| import com.sun.source.tree.UnaryTree; |
| import org.checkerframework.dataflow.util.HashCodeUtils; |
| |
| /** |
| * A node for the unary minus operation: |
| * |
| * <pre> |
| * - <em>expression</em> |
| * </pre> |
| * |
| * @author Stefan Heule |
| * @author Charlie Garrett |
| */ |
| public class NumericalMinusNode extends UnaryOperationNode { |
| |
| public NumericalMinusNode(UnaryTree tree, Node operand) { |
| super(tree, operand); |
| assert tree.getKind() == Kind.UNARY_MINUS; |
| } |
| |
| @Override |
| public <R, P> R accept(NodeVisitor<R, P> visitor, P p) { |
| return visitor.visitNumericalMinus(this, p); |
| } |
| |
| @Override |
| public String toString() { |
| return "(- " + getOperand() + ")"; |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (obj == null || !(obj instanceof NumericalMinusNode)) { |
| return false; |
| } |
| NumericalMinusNode other = (NumericalMinusNode) obj; |
| return getOperand().equals(other.getOperand()); |
| } |
| |
| @Override |
| public int hashCode() { |
| return HashCodeUtils.hash(getOperand()); |
| } |
| } |