1 /* 2 * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 /* 25 * @test 26 * @bug 8187089 27 * @run main BasicTest 28 */ 29 30 import java.lang.invoke.*; 31 import java.util.Arrays; 32 33 public class BasicTest { 34 static final int MAX_PARAM_SLOTS = 200; 35 static int exceedMaxParamSlots = 0; main(String[] args)36 public static void main(String[] args) throws Throwable { 37 int expectionTestCases = 0; 38 39 Class<?>[] types = new Class<?>[200]; 40 Arrays.fill(types, int.class); 41 test(MethodType.methodType(String.class, types)); 42 43 types = new Class<?>[100]; 44 Arrays.fill(types, long.class); 45 test(MethodType.methodType(String.class, types)); 46 47 // test cases exceeding 200 parameter slots 48 expectionTestCases++; 49 types = new Class<?>[101]; 50 Arrays.fill(types, 0, 50, long.class); 51 Arrays.fill(types, 50, 100, double.class); 52 types[100] = int.class; 53 test(MethodType.methodType(String.class, types)); 54 55 expectionTestCases++; 56 types = new Class<?>[201]; 57 Arrays.fill(types, int.class); 58 test(MethodType.methodType(String.class, types)); 59 60 if (exceedMaxParamSlots != expectionTestCases) { 61 throw new RuntimeException("expected one test case exceeding 200 param slots"); 62 } 63 } 64 65 /** 66 * Tests if StringConcatException is thrown if the given concatType 67 * has more than 200 parameter slots 68 */ test(MethodType concatType)69 static void test(MethodType concatType) throws StringConcatException { 70 String recipe = ""; 71 int slots = 0; 72 for (Class<?> c : concatType.parameterList()) { 73 recipe += "\1"; 74 slots++; 75 if (c == double.class || c == long.class) { 76 slots++; 77 } 78 } 79 if (slots > MAX_PARAM_SLOTS) { 80 exceedMaxParamSlots++; 81 } 82 System.out.format("Test %s parameter slots%n", slots); 83 try { 84 StringConcatFactory.makeConcat(MethodHandles.lookup(), "name", concatType); 85 if (slots > MAX_PARAM_SLOTS) { 86 throw new RuntimeException("StringConcatException not thrown"); 87 } 88 } catch (StringConcatException e) { 89 if (slots <= MAX_PARAM_SLOTS) throw e; 90 } 91 92 try { 93 StringConcatFactory.makeConcatWithConstants(MethodHandles.lookup(), "name", 94 concatType, recipe); 95 if (slots > MAX_PARAM_SLOTS) { 96 throw new RuntimeException("StringConcatException not thrown"); 97 } 98 } catch (StringConcatException e) { 99 if (slots <= MAX_PARAM_SLOTS) throw e; 100 } 101 } 102 } 103