org.checkerframework.dataflow.cfg.node.BitwiseComplementNode Maven / Gradle / Ivy

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The Checker Framework enhances Java's type system to make it more powerful and useful. This lets software developers detect and prevent errors in their Java programs. The Checker Framework includes compiler plug-ins ("checkers") that find bugs or verify their absence. It also permits you to write your own compiler plug-ins.

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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 bitwise complement operation:
 *
 *  *   ~ expression
 * 
 *
 * @author Stefan Heule
 * @author Charlie Garrett
 */
public class BitwiseComplementNode extends UnaryOperationNode {

    public BitwiseComplementNode(UnaryTree tree, Node operand) {
        super(tree, operand);
        assert tree.getKind() == Kind.BITWISE_COMPLEMENT;
    }

    @Override
    public  R accept(NodeVisitor visitor, P p) {
        return visitor.visitBitwiseComplement(this, p);
    }

    @Override
    public String toString() {
        return "(~ " + getOperand() + ")";
    }

    @Override
    public boolean equals(Object obj) {
        if (obj == null || !(obj instanceof BitwiseComplementNode)) {
            return false;
        }
        BitwiseComplementNode other = (BitwiseComplementNode) obj;
        return getOperand().equals(other.getOperand());
    }

    @Override
    public int hashCode() {
        return HashCodeUtils.hash(getOperand());
    }
}