| // Copyright (c) 2020, the R8 project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| package com.android.tools.r8.ir.desugar.backports; |
| |
| public final class CharSequenceMethods { |
| |
| public static int compare(CharSequence a, CharSequence b) { |
| int aLen = a.length(); // implicit null check |
| int bLen = b.length(); // implicit null check |
| if (a == b) { |
| return 0; |
| } |
| for (int i = 0, stop = Math.min(aLen, bLen); i < stop; i++) { |
| char aChar = a.charAt(i); |
| char bChar = b.charAt(i); |
| if (aChar != bChar) { |
| return (int) aChar - (int) bChar; // See CharacterMethods.compare |
| } |
| } |
| // Prefixes match so we need to return a value based on which is longer. |
| return aLen - bLen; |
| } |
| } |