Expect.kt
/*
* Copyright 2022 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.ui.test
/**
* Returns the hash code for the given object that is unique across all currently allocated objects.
* The hash code for the null reference is zero.
*
* Can be negative, and near Int.MAX_VALUE, so it can overflow if used as part of calculations.
* For example, don't use this:
* ```
* val comparison = identityHashCode(midVal) - identityHashCode(leftVal)
* if (comparison < 0) ...
* ```
* Use this instead:
* ```
* if (identityHashCode(midVal) < identityHashCode(leftVal)) ...
* ```
*/
internal expect fun identityHashCode(instance: Any?): Int