1/* 2 * Copyright (C) 2015 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16package android.support.annotation; 17 18import java.lang.annotation.Retention; 19import java.lang.annotation.Target; 20 21import static java.lang.annotation.ElementType.ANNOTATION_TYPE; 22import static java.lang.annotation.ElementType.FIELD; 23import static java.lang.annotation.ElementType.LOCAL_VARIABLE; 24import static java.lang.annotation.ElementType.METHOD; 25import static java.lang.annotation.ElementType.PARAMETER; 26import static java.lang.annotation.RetentionPolicy.CLASS; 27 28/** 29 * Denotes that the annotated element should have a given size or length. 30 * Note that "-1" means "unset". Typically used with a parameter or 31 * return value of type array or collection. 32 * <p> 33 * Example: 34 * <pre>{@code 35 * public void getLocationInWindow(@Size(2) int[] location) { 36 * ... 37 * } 38 * }</pre> 39 */ 40@Retention(CLASS) 41@Target({PARAMETER,LOCAL_VARIABLE,METHOD,FIELD,ANNOTATION_TYPE}) 42public @interface Size { 43 /** An exact size (or -1 if not specified) */ 44 long value() default -1; 45 /** A minimum size, inclusive */ 46 long min() default Long.MIN_VALUE; 47 /** A maximum size, inclusive */ 48 long max() default Long.MAX_VALUE; 49 /** The size must be a multiple of this factor */ 50 long multiple() default 1; 51}