1 // Copyright 2023 Google LLC 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 /// Implementation compatible with Java's 16 /// [`Object.hashCode()`](https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html#hashCode()). hash_code(input: &[u8]) -> i3217pub(crate) fn hash_code(input: &[u8]) -> i32 { 18 input.iter().fold(1_i32, |acc, &byte| 31_i32.wrapping_mul(acc).wrapping_add(byte as i8 as i32)) 19 } 20