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.annotation;
17
18import java.lang.annotation.Retention;
19import java.lang.annotation.Target;
20
21import static java.lang.annotation.ElementType.FIELD;
22import static java.lang.annotation.ElementType.LOCAL_VARIABLE;
23import static java.lang.annotation.ElementType.METHOD;
24import static java.lang.annotation.ElementType.PARAMETER;
25import static java.lang.annotation.RetentionPolicy.SOURCE;
26
27/**
28 * Denotes that the annotated element should be a float or double in the given range
29 * <p>
30 * Example:
31 * <pre><code>
32 *  &#64;FloatRange(from=0.0,to=1.0)
33 *  public float getAlpha() {
34 *      ...
35 *  }
36 * </code></pre>
37 *
38 * @hide
39 */
40@Retention(SOURCE)
41@Target({METHOD,PARAMETER,FIELD,LOCAL_VARIABLE})
42public @interface FloatRange {
43    /** Smallest value. Whether it is inclusive or not is determined
44     * by {@link #fromInclusive} */
45    double from() default Double.NEGATIVE_INFINITY;
46    /** Largest value. Whether it is inclusive or not is determined
47     * by {@link #toInclusive} */
48    double to() default Double.POSITIVE_INFINITY;
49
50    /** Whether the from value is included in the range */
51    boolean fromInclusive() default true;
52
53    /** Whether the to value is included in the range */
54    boolean toInclusive() default true;
55}