/*
* 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) 2004-2015 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 java.util.List;
/**
* Describes options that an option parser recognizes.
*
* <p>Instances of this interface are returned by the "fluent interface" methods to allow retrieval of option arguments
* in a type-safe manner. Here's an example:</p>
*
* <pre><code>
* OptionParser parser = new OptionParser();
* <strong>OptionSpec<Integer></strong> count =
* parser.accepts( "count" ).withRequiredArg().ofType( Integer.class );
* OptionSet options = parser.parse( "--count", "2" );
* assert options.has( count );
* int countValue = options.valueOf( count );
* assert countValue == count.value( options );
* List<Integer> countValues = options.valuesOf( count );
* assert countValues.equals( count.values( options ) );
* </code></pre>
*
* @param <V> represents the type of the arguments this option accepts
* @author <a href="mailto:pholser@alumni.rice.edu">Paul Holser</a>
*/
public interface OptionSpec<V> {
/**
* Gives any arguments associated with the given option in the given set of detected options.
*
* <p>Specifying a {@linkplain ArgumentAcceptingOptionSpec#defaultsTo(Object, Object[]) default argument value}
* for this option will cause this method to return that default value even if this option was not detected on the
* command line, or if this option can take an optional argument but did not have one on the command line.</p>
*
* @param detectedOptions the detected options to search in
* @return the arguments associated with this option; an empty list if no such arguments are present, or if this
* option was not detected
* @throws OptionException if there is a problem converting this option's arguments to the desired type; for
* example, if the type does not implement a correct conversion constructor or method
* @throws NullPointerException if {@code detectedOptions} is {@code null}
* @see OptionSet#valuesOf(OptionSpec)
*/
List<V> values( OptionSet detectedOptions );
/**
* Gives the argument associated with the given option in the given set of detected options.
*
* <p>Specifying a {@linkplain ArgumentAcceptingOptionSpec#defaultsTo(Object, Object[]) default argument value}
* for this option will cause this method to return that default value even if this option was not detected on the
* command line, or if this option can take an optional argument but did not have one on the command line.</p>
*
* @param detectedOptions the detected options to search in
* @return the argument of the this option; {@code null} if no argument is present, or that option was not detected
* @throws OptionException if more than one argument was detected for the option
/**代码未完, 请加载全部代码(NowJava.com).**/