/**

 * Back 2 Browser Bytecode Translator

 * Copyright (C) 2012 Jaroslav Tulach <jaroslav.tulach@apidesign.org>

 *

 * This program is free software: you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation, version 2 of the License.

 *

 * This program 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 for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program. Look for COPYING file in the top folder.

 * If not, see http://opensource.org/licenses/GPL-2.0.

 */

package org.apidesign.javap;

import org.apidesign.bck2brwsr.core.JavaScriptBody;

import org.apidesign.bck2brwsr.core.JavaScriptPrototype;

/** A JavaScript ready replacement for java.util.Vector

 *

 * @author Jaroslav Tulach <jtulach@netbeans.org>

 */

@JavaScriptPrototype(prototype = "new Array" )

final class Vector {

    private Object[] arr;

    Vector() {

    }

    Vector(int i) {

    }

    void add(Object objectType) {

        addElement(objectType);

    }

    @JavaScriptBody(args = { "obj" }, body = 

        "this.push(obj);"

    )

    void addElement(Object obj) {

        final int s = size();

        setSize(s + 1);

        setElementAt(obj, s);

    }

    @JavaScriptBody(args = { }, body = 

        "return this.length;"

    )

    int size() {

        return arr == null ? 0 : arr.length;

    }

    @JavaScriptBody(args = { "newArr" }, body =

        "for (var i = 0; i < this.length; i++) {\n"

      + "  newArr[i] = this[i];\n"

      + "}\n")

    void copyInto(Object[] newArr) {

        if (arr == null) {

            return;

        }

        int min = Math.min(newArr.length, arr.length);

        for (int i = 0; i < min; i++) {

            newArr[i] = arr[i];

        }

    }

    @JavaScriptBody(args = { "index" }, body =

        "return this[index];"

    )

    Object elementAt(int index) {

        return arr[index];

    }

    private void setSize(int len) {

        Object[] newArr = new Object[len];

        copyInto(newArr);

        arr = newArr;

    }

    @JavaScriptBody(args = { "val", "index" }, body = 

        "this[index] = val;"

    )

    void setElementAt(Object val, int index) {

        arr[index] = val;

    }

}