/*

 * Copyright (c) 2009, 2015, 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.

 */

/*

 * This file is available under and governed by the GNU General Public

 * License version 2 only, as published by the Free Software Foundation.

 * However, the following notice accompanied the original version of this

 * file:

 *

 * The MIT License

 *

 * Copyright (c) 2004-2014 Paul R. Holser, Jr.

 *

 * Permission is hereby granted, free of charge, to any person obtaining

 * a copy of this software and associated documentation files (the

 * "Software"), to deal in the Software without restriction, including

 * without limitation the rights to use, copy, modify, merge, publish,

 * distribute, sublicense, and/or sell copies of the Software, and to

 * permit persons to whom the Software is furnished to do so, subject to

 * the following conditions:

 *

 * The above copyright notice and this permission notice shall be

 * included in all copies or substantial portions of the Software.

 *

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,

 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF

 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND

 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE

 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION

 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION

 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

 */

package jdk.internal.joptsimple;

import static jdk.internal.joptsimple.ParserRules.*;

/**

 * Abstraction of parser state; mostly serves to model how a parser behaves depending on whether end-of-options

 * has been detected.

 *

 * @author <a href="mailto:pholser@alumni.rice.edu">Paul Holser</a>

 */

abstract class OptionParserState {

    static OptionParserState noMoreOptions() {

        return new OptionParserState() {

            @Override

            protected void handleArgument( OptionParser parser, ArgumentList arguments, OptionSet detectedOptions ) {

                parser.handleNonOptionArgument( arguments.next(), arguments, detectedOptions );

            }

        };

    }

    static OptionParserState moreOptions( final boolean posixlyCorrect ) {

        return new OptionParserState() {

            @Override

            protected void handleArgument( OptionParser parser, ArgumentList arguments, OptionSet detectedOptions ) {

                String candidate = arguments.next();

                try {

                    if ( isOptionTerminator( candidate ) ) {

                        parser.noMoreOptions();

                        return;

                    } else if ( isLongOptionToken( candidate ) ) {

                        parser.handleLongOptionToken( candidate, arguments, detectedOptions );

                        return;

                    } else if ( isShortOptionToken( candidate ) ) {

                        parser.handleShortOptionToken( candidate, arguments, detectedOptions );

                        return;

                    }

                } catch ( UnrecognizedOptionException e ) {

                    if ( !parser.doesAllowsUnrecognizedOptions() )

                        throw e;

                }

                if ( posixlyCorrect )

                    parser.noMoreOptions();

                parser.handleNonOptionArgument( candidate, arguments, detectedOptions );

            }

        };

    }

    protected abstract void handleArgument( OptionParser parser, ArgumentList arguments, OptionSet detectedOptions );

}