1 /*
2  * Copyright (C) 2024 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  */
16 
17 package com.android.tools.metalava.model.provider
18 
19 import java.io.File
20 
21 /** Possible input formats supported by the different model providers. */
22 enum class InputFormat(
23     val extension: String,
24 ) {
25     /**
26      * Signature text files.
27      *
28      * The files will end with `.txt`.
29      */
30     SIGNATURE(
31         extension = "txt",
32     ),
33 
34     /**
35      * Java files.
36      *
37      * The files will end with `.java`.
38      */
39     JAVA(
40         extension = "java",
41     ),
42 
43     /**
44      * Kotlin files.
45      *
46      * The files will end with `.kt`.
47      */
48     KOTLIN(
49         extension = "kt",
50     );
51 
combineWithnull52     fun combineWith(other: InputFormat): InputFormat {
53         if (this == other) return this
54         if (this == SIGNATURE || other == SIGNATURE) error("Cannot mix signature and source files")
55         // When mixing Kotlin and Java then it should be treated as Kotlin as a Kotlin provider can
56         // handle Java but the reverse is not true.
57         return KOTLIN
58     }
59 
60     companion object {
fromFilenamenull61         fun fromFilename(path: String): InputFormat {
62             val extension = File(path).extension
63             return values().filter { it.extension == extension }.single()
64         }
65     }
66 }
67