/*
 * Copyright (c) 2005, 2006, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code 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 General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */
package com.sun.tools.internal.ws.wsdl.framework;

/**
 *
 * Maintains wsdl:location context. This is used with
 * TWSDLParserContextImpl, where one each WSDL being imported its location is pushed.
 *
 * @author WS Development Team
 */
public class WSDLLocation {
    WSDLLocation() {
        reset();
    }

    public void push() {
        int max = contexts.length;
        idPos++;
        if (idPos >= max) {
            LocationContext newContexts[] = new LocationContext[max * 2];
            System.arraycopy(contexts, 0, newContexts, 0, max);
            max *= 2;
            contexts = newContexts;
        }
        currentContext = contexts[idPos];
        if (currentContext == null) {
            contexts[idPos] = currentContext = new LocationContext();
        }
        if (idPos > 0) {
            currentContext.setParent(contexts[idPos - 1]);
        }

    }

    public void pop() {
        idPos--;
        if (idPos >= 0) {
            currentContext = contexts[idPos];
        }
    }

    public void reset() {
        contexts = new LocationContext[32];
        idPos = 0;
        contexts[idPos] = currentContext = new LocationContext();
    }

    public String getLocation() {
        return currentContext.getLocation();
    }

    public void setLocation(String loc) {
        currentContext.setLocation(loc);
    }

    private LocationContext[] contexts;
    private int idPos;
    private LocationContext currentContext;

    // LocationContext - inner class
    private static class LocationContext {
        void setLocation(String loc) {
            location = loc;
        }

        String getLocation() {
            return location;
        }

        void setParent(LocationContext parent) {
            parentLocation = parent;
        }

        private String location;
        private LocationContext parentLocation;
    }
}