Mercurial > hg > truffle
view graal/com.oracle.graal.jtt/src/com/oracle/graal/jtt/loop/LoopLastIndexOf.java @ 9552:6fed251e3cee
Merge (fixed: f49e1f023f7d Merge)
author | Lukas Stadler <lukas.stadler@jku.at> |
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date | Fri, 03 May 2013 20:26:43 +0200 |
parents | 5e3d1a68664e |
children | 64dcb92ee75a |
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/* * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package com.oracle.graal.jtt.loop; import com.oracle.graal.jtt.*; import org.junit.*; /* * see java.lang.String.lastIndexOf(char[], int, int, char[], int ,int, int) */ public class LoopLastIndexOf extends JTTTest { private static final char[] v1 = new char[]{'a', 'b', 'c', 'd', 'a', 'b', 'c', 'd', 'a', 'b', 'c', 'd'}; private static final char[] v2 = new char[]{'d', 'a'}; private static final char[] v3 = new char[]{'d', 'b', 'c'}; private static final char[] v4 = new char[]{'z', 'a', 'b', 'c'}; public static int test(char[] source, int sourceOffset, int sourceCount, char[] target, int targetOffset, int targetCount, int fromIndexParam) { int rightIndex = sourceCount - targetCount; int fromIndex = fromIndexParam; if (fromIndex < 0) { return -1; } if (fromIndex > rightIndex) { fromIndex = rightIndex; } /* Empty string always matches. */ if (targetCount == 0) { return fromIndex; } int strLastIndex = targetOffset + targetCount - 1; char strLastChar = target[strLastIndex]; int min = sourceOffset + targetCount - 1; int i = min + fromIndex; startSearchForLastChar: while (true) { while (i >= min && source[i] != strLastChar) { i--; } if (i < min) { return -1; } int j = i - 1; int start = j - (targetCount - 1); int k = strLastIndex - 1; while (j > start) { if (source[j--] != target[k--]) { i--; continue startSearchForLastChar; } } return start - sourceOffset + 1; } } @Test public void run0() throws Throwable { runTest("test", v1, 0, v1.length, v2, 0, v2.length, 10); } @Test public void run1() throws Throwable { runTest("test", v1, 0, v1.length, v3, 0, v3.length, 10); } @Test public void run2() throws Throwable { runTest("test", v1, 0, v1.length, v4, 0, v4.length, 10); } @Test public void run3() throws Throwable { runTest("test", v1, 1, v1.length - 1, v3, 0, v3.length, 10); } @Test // (expected = ArrayIndexOutOfBoundsException.class) public void run4() throws Throwable { runTest("test", v1, 1, v1.length, v3, 0, v3.length, 10); } }