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

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dataflow-shaded is a dataflow framework based on the javac compiler. It differs from the org.checkerframework:dataflow artifact in two ways. First, the packages in this artifact have been renamed to org.checkerframework.shaded.*. Second, unlike the dataflow artifact, this artifact contains the dependencies it requires.

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package org.checkerframework.dataflow.cfg.node;

import com.sun.source.tree.Tree;
import com.sun.source.tree.UnaryTree;

import org.checkerframework.checker.nullness.qual.Nullable;

import java.util.Objects;

/**
 * A node for a conditional not expression:
 *
 *  *   ! expression
 * 
 */
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() == Tree.Kind.LOGICAL_COMPLEMENT;
    }

    @Override
    public  R accept(NodeVisitor 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());
    }
}