dataflow.src.org.checkerframework.dataflow.cfg.node.ObjectCreationNode 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 org.checkerframework.dataflow.util.HashCodeUtils;
import org.checkerframework.javacutil.InternalUtils;

import java.util.Collection;
import java.util.LinkedList;
import java.util.List;

import com.sun.source.tree.NewClassTree;

/**
 * A node for new object creation
 *
 *  *   new constructor(arg1, arg2, ...)
 * 
 *
 * @author Stefan Heule
 * @author Charlie Garrett
 *
 */
public class ObjectCreationNode extends Node {

    protected NewClassTree tree;
    protected Node constructor;
    protected List arguments;

    public ObjectCreationNode(NewClassTree tree,
            Node constructor,
            List arguments) {
        super(InternalUtils.typeOf(tree));
        this.tree = tree;
        this.constructor = constructor;
        this.arguments = arguments;
    }

    public Node getConstructor() {
        return constructor;
    }

    public List getArguments() {
        return arguments;
    }

    public Node getArgument(int i) {
        return arguments.get(i);
    }

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

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

    @Override
    public String toString() {
        StringBuffer sb = new StringBuffer();
        sb.append("new " + constructor + "(");
        boolean needComma = false;
        for (Node arg : arguments) {
            if (needComma) {
                sb.append(", ");
            }
            sb.append(arg);
            needComma = true;
        }
        sb.append(")");
        return sb.toString();
    }

    @Override
    public boolean equals(Object obj) {
        if (obj == null || !(obj instanceof ObjectCreationNode)) {
            return false;
        }
        ObjectCreationNode other = (ObjectCreationNode) obj;
        if (constructor == null && other.getConstructor() != null) {
            return false;
        }

        return getConstructor().equals(other.getConstructor())
                && getArguments().equals(other.getArguments());
    }

    @Override
    public int hashCode() {
        int hash = HashCodeUtils.hash(constructor);
        for (Node arg : arguments) {
            hash = HashCodeUtils.hash(hash, arg.hashCode());
        }
        return hash;
    }

    @Override
    public Collection getOperands() {
        LinkedList list = new LinkedList();
        list.add(constructor);
        list.addAll(arguments);
        return list;
    }
}