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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 java.util.Collection;
import java.util.Collections;

import org.checkerframework.dataflow.util.HashCodeUtils;

import org.checkerframework.javacutil.InternalUtils;

import com.sun.source.tree.VariableTree;

/**
 * A node for a local variable declaration:
 *
 *  *   modifier type identifier;
 * 
 *
 * Note: Does not have an initializer block, as that will be translated to a
 * separate {@link AssignmentNode}.
 *
 * @author Stefan Heule
 *
 */
public class VariableDeclarationNode extends Node {

    protected VariableTree tree;
    protected String name;

    // TODO: make modifier accessible

    public VariableDeclarationNode(VariableTree t) {
        super(InternalUtils.typeOf(t));
        tree = t;
        name = tree.getName().toString();
    }

    public String getName() {
        return name;
    }

    @Override
    public VariableTree getTree() {
        return tree;
    }

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

    @Override
    public String toString() {
        return name;
    }

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

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

    @Override
    public Collection getOperands() {
        return Collections.emptyList();
    }

}