dataflow.src.org.checkerframework.dataflow.cfg.node.AssertionErrorNode 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 java.util.Collection;
import java.util.LinkedList;

import javax.lang.model.type.TypeMirror;

import org.checkerframework.dataflow.util.HashCodeUtils;

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

/**
 * A node for the {@link AssertionError} when an assertion fails.
 *
 *  *   assert condition : detail ;
 * 
 *
 * @author Stefan Heule
 * @author Charlie Garrett
 *
 */
public class AssertionErrorNode extends Node {

    protected Tree tree;
    protected Node condition;
    protected Node detail;

    public AssertionErrorNode(Tree tree, Node condition, Node detail, TypeMirror type) {
        // TODO: Find out the correct "type" for statements.
        // Is it TypeKind.NONE?
        super(type);
        assert tree.getKind() == Kind.ASSERT;
        this.tree = tree;
        this.condition = condition;
        this.detail = detail;
    }

    public Node getCondition() {
        return condition;
    }

    public Node getDetail() {
        return detail;
    }

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

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

    @Override
    public String toString() {
        return "AssertionError(" + getDetail() + ")";
    }

    @Override
    public boolean equals(Object obj) {
        if (obj == null || !(obj instanceof AssertionErrorNode)) {
            return false;
        }
        AssertionErrorNode other = (AssertionErrorNode) obj;
        return getCondition().equals(other.getCondition()) &&
            getDetail().equals(other.getDetail());
    }

    @Override
    public int hashCode() {
        return HashCodeUtils.hash(getCondition(), getDetail());
    }

    @Override
    public Collection getOperands() {
        LinkedList list = new LinkedList();
        list.add(getCondition());
        list.add(getDetail());
        return list;
    }
}