1/*
2 * Copyright (c) 2009, 2015, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.  Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26/*
27 * This file is available under and governed by the GNU General Public
28 * License version 2 only, as published by the Free Software Foundation.
29 * However, the following notice accompanied the original version of this
30 * file:
31 *
32 * The MIT License
33 *
34 * Copyright (c) 2004-2014 Paul R. Holser, Jr.
35 *
36 * Permission is hereby granted, free of charge, to any person obtaining
37 * a copy of this software and associated documentation files (the
38 * "Software"), to deal in the Software without restriction, including
39 * without limitation the rights to use, copy, modify, merge, publish,
40 * distribute, sublicense, and/or sell copies of the Software, and to
41 * permit persons to whom the Software is furnished to do so, subject to
42 * the following conditions:
43 *
44 * The above copyright notice and this permission notice shall be
45 * included in all copies or substantial portions of the Software.
46 *
47 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
48 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
49 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
50 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
51 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
52 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
53 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
54 */
55
56package jdk.internal.joptsimple;
57
58import static jdk.internal.joptsimple.ParserRules.*;
59
60/**
61 * Abstraction of parser state; mostly serves to model how a parser behaves depending on whether end-of-options
62 * has been detected.
63 *
64 * @author <a href="mailto:pholser@alumni.rice.edu">Paul Holser</a>
65 */
66abstract class OptionParserState {
67    static OptionParserState noMoreOptions() {
68        return new OptionParserState() {
69            @Override
70            protected void handleArgument( OptionParser parser, ArgumentList arguments, OptionSet detectedOptions ) {
71                parser.handleNonOptionArgument( arguments.next(), arguments, detectedOptions );
72            }
73        };
74    }
75
76    static OptionParserState moreOptions( final boolean posixlyCorrect ) {
77        return new OptionParserState() {
78            @Override
79            protected void handleArgument( OptionParser parser, ArgumentList arguments, OptionSet detectedOptions ) {
80                String candidate = arguments.next();
81                try {
82                    if ( isOptionTerminator( candidate ) ) {
83                        parser.noMoreOptions();
84                        return;
85                    } else if ( isLongOptionToken( candidate ) ) {
86                        parser.handleLongOptionToken( candidate, arguments, detectedOptions );
87                        return;
88                    } else if ( isShortOptionToken( candidate ) ) {
89                        parser.handleShortOptionToken( candidate, arguments, detectedOptions );
90                        return;
91                    }
92                } catch ( UnrecognizedOptionException e ) {
93                    if ( !parser.doesAllowsUnrecognizedOptions() )
94                        throw e;
95                }
96
97                if ( posixlyCorrect )
98                    parser.noMoreOptions();
99
100                parser.handleNonOptionArgument( candidate, arguments, detectedOptions );
101            }
102        };
103    }
104
105    protected abstract void handleArgument( OptionParser parser, ArgumentList arguments, OptionSet detectedOptions );
106}
107