oblak/cloud-annotations/src/main/java/cloud/commandframework/annotations/Flag.java
2021-12-02 02:04:43 -08:00

98 lines
3.5 KiB
Java

//
// MIT License
//
// Copyright (c) 2021 Alexander Söderberg & Contributors
//
// 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 cloud.commandframework.annotations;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
import java.util.function.BiFunction;
import org.checkerframework.checker.nullness.qual.NonNull;
/**
* Indicates that the parameter should be treated like a {@link cloud.commandframework.arguments.flags.CommandFlag}.
* <ul>
* <li>If the parameter is a {@code boolean}, a presence flag will be created</li>
* <li>If the parameter is of any other type, a value flag will be created and the parser
* will resolve it in the same way that it would for an {@link Argument}</li>
* </ul>
*/
@Target(ElementType.PARAMETER)
@Retention(RetentionPolicy.RUNTIME)
public @interface Flag {
/**
* The flag name
*
* @return Flag name
*/
@NonNull String value();
/**
* Flag aliases
*
* @return Aliases
*/
@NonNull String[] aliases() default "";
/**
* Name of the parser. Leave empty to use
* the default parser for the parameter type
*
* @return Parser name
*/
@NonNull String parserName() default "";
/**
* Name of the suggestions provider to use. If the string is left empty, the default
* provider for the argument parser will be used. Otherwise,
* the {@link cloud.commandframework.arguments.parser.ParserRegistry} instance in the
* {@link cloud.commandframework.CommandManager} will be queried for a matching suggestion provider.
* <p>
* For this to work, the suggestion needs to be registered in the parser registry. To do this, use
* {@link cloud.commandframework.arguments.parser.ParserRegistry#registerSuggestionProvider(String, BiFunction)}.
* The registry instance can be retrieved using {@link cloud.commandframework.CommandManager#getParserRegistry()}.
*
* @return The name of the suggestion provider, or {@code ""} if the default suggestion provider for the argument parser
* should be used instead
* @since 1.2.0
*/
@NonNull String suggestions() default "";
/**
* The argument description
*
* @return Argument description
*/
@NonNull String description() default "";
/**
* The flag permission
*
* @return Flag permission
* @since 1.6.0
*/
@NonNull String permission() default "";
}