1/*
2 * Copyright (C) 2017 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
17package androidx.room.vo
18
19/**
20 * A common value object when we need to associate a Field with an Index
21 * variable.
22 * <p>
23 * If we are sure that the field will be there at compile time, we set it to always Exists so that
24 * the generated code does not check for -1 column indices.
25 */
26data class FieldWithIndex(val field: Field, val indexVar: String, val alwaysExists: Boolean) {
27    companion object {
28        fun byOrder(fields: List<Field>): List<FieldWithIndex> {
29            return fields.mapIndexed { index, field ->
30                FieldWithIndex(field = field,
31                        indexVar = "${index + 1}",
32                        alwaysExists = true)
33            }
34        }
35    }
36}
37