JoinedKey.kt

/*
 * Copyright 2019 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package androidx.compose.runtime

internal data class JoinedKey(
    val left: Any?,
    val right: Any?
)

@InternalComposeApi
fun isJoinedKey(key: Any?) = key is JoinedKey
@InternalComposeApi
fun joinedKeyLeft(key: Any?): Any? = when (key) {
    is JoinedKey -> key.left
    else -> null
}

@InternalComposeApi
fun joinedKeyRight(key: Any?): Any? = when (key) {
    is JoinedKey -> key.right
    else -> null
}