/*
 * Copyright (C) 2012-2017 The Project Lombok Authors.
 * 
 * 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 lombok.experimental;

import static java.lang.annotation.ElementType.*;
import static java.lang.annotation.RetentionPolicy.*;

import java.lang.annotation.*;

Extension methods enable you to "add" methods to existing types without creating a new derived type, recompiling, or otherwise modifying the original type. Extension methods are a special kind of static method, but they are called as if they were instance methods on the extended type.

Complete documentation is found at the project lombok features page for @ExtensionMethod.

Before:

@ExtensionMethod(java.util.Arrays.class)
class Example {
	private void example() {
		long[] values = new long[] { 2, 5, 7, 9 };
		values.copyOf(3).sort();
	}
}
After:
class Example {
	private void example() {
		long[] values = new long[] { 2, 5, 7, 9 };
		java.util.Arrays.sort(java.util.Arrays.copyOf(values, 3));
	}
}
/** * Extension methods enable you to "add" methods to existing types without creating a new derived type, recompiling, or * otherwise modifying the original type. Extension methods are a special kind of static method, but they are called as * if they were instance methods on the extended type. * <p> * Complete documentation is found at <a href="https://projectlombok.org/features/experimental/ExtensionMethod">the project lombok features page for &#64;ExtensionMethod</a>. * <br> * <p> * Before: * * <pre> * &#064;ExtensionMethod(java.util.Arrays.class) * class Example { * private void example() { * long[] values = new long[] { 2, 5, 7, 9 }; * values.copyOf(3).sort(); * } * } * </pre> * * After: * * <pre> * class Example { * private void example() { * long[] values = new long[] { 2, 5, 7, 9 }; * java.util.Arrays.sort(java.util.Arrays.copyOf(values, 3)); * } * } * </pre> */
@Target(TYPE) @Retention(SOURCE) public @interface ExtensionMethod {
Returns:All types whose static methods will be exposed as extension methods.
/** @return All types whose static methods will be exposed as extension methods. */
Class<?>[] value();
If true, an applicable extension method is used (if found) even if the method call already was compilable (this is the default). If false, an extension method is only used if the method call is not also defined by the type itself.
Returns:Whether or not to override already existing methods with the extension.
/** * If {@code true}, an applicable extension method is used (if found) even if the method call already was compilable (this is the default). * If {@code false}, an extension method is only used if the method call is not also defined by the type itself. * * @return Whether or not to override already existing methods with the extension. */
boolean suppressBaseMethods() default true; }