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/*
 * Bytecode Analysis Framework
 * Copyright (C) 2003,2004 University of Maryland
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

package edu.umd.cs.findbugs.ba;

public class ResourceValueFrame extends Frame {
    /**
     * The resource escapes the method.
     */
    public static final int ESCAPED = 0;

    /**
     * The resource is open (or locked, etc) on paths that include only normal
     * control flow.
     */
    public static final int OPEN = 1;

    /**
     * The resource is open (or locked, etc) on paths that include exception
     * control flow.
     */
    public static final int OPEN_ON_EXCEPTION_PATH = 2;

    /**
     * The resource is closed (or unlocked, etc).
     */
    public static final int CLOSED = 3;

    /**
     * The resource has been created, but is not open.
     */
    public static final int CREATED = 4;

    /**
     * The resource doesn't exist.
     */
    public static final int NONEXISTENT = 5;

    private int status;

    public ResourceValueFrame(int numSlots) {
        super(numSlots);
        this.status = NONEXISTENT;
    }

    public int getStatus() {
        return status;
    }

    public void setStatus(int status) {
        this.status = status;
    }

    @Override
    public boolean sameAs(Frame other_) {
        if (!super.sameAs(other_)) {
            return false;
        }

        ResourceValueFrame other = (ResourceValueFrame) other_;
        return this.status == other.status;
    }

    @Override
    public void copyFrom(Frame other_) {
        super.copyFrom(other_);
        ResourceValueFrame other = (ResourceValueFrame) other_;
        this.status = other.status;
    }

    private static final String[] statusList = { "(escaped)", "(open)", "(open_exception)", "(closed)", "(created)",
        "(nonexistent)" };

    @Override
    public String toString() {
        return super.toString() + statusList[status];
    }

}