| /* |
| * Copyright (c) 2013, 2016, 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. |
| */ |
| |
| /* |
| * @test |
| * @bug 8013357 |
| * @summary javac should correctly enforce binary comparison rules. |
| * @modules jdk.compiler |
| */ |
| |
| import java.io.*; |
| |
| public class TestComparisons { |
| |
| private int errors = 0; |
| private int testnum = 0; |
| |
| static final File testdir = new File("8013357"); |
| |
| private enum CompareType { |
| BYTE_PRIM("byte"), |
| SHORT_PRIM("short"), |
| CHAR_PRIM("char"), |
| INTEGER_PRIM("int"), |
| LONG_PRIM("long"), |
| FLOAT_PRIM("float"), |
| DOUBLE_PRIM("double"), |
| BOOLEAN_PRIM("boolean"), |
| |
| BYTE("Byte"), |
| SHORT("Short"), |
| CHAR("Character"), |
| INTEGER("Integer"), |
| LONG("Long"), |
| FLOAT("Float"), |
| DOUBLE("Double"), |
| BOOLEAN("Boolean"), |
| |
| BYTE_SUPER("List<? super Byte>", true), |
| SHORT_SUPER("List<? super Short>", true), |
| CHAR_SUPER("List<? super Character>", true), |
| INTEGER_SUPER("List<? super Integer>", true), |
| LONG_SUPER("List<? super Long>", true), |
| FLOAT_SUPER("List<? super Float>", true), |
| DOUBLE_SUPER("List<? super Double>", true), |
| BOOLEAN_SUPER("List<? super Boolean>", true), |
| |
| OBJECT("Object"), |
| NUMBER("Number"), |
| STRING("String"); |
| |
| public final boolean isList; |
| public final String name; |
| |
| private CompareType(final String name, final boolean isList) { |
| this.isList = isList; |
| this.name = name; |
| } |
| |
| private CompareType(final String name) { |
| this(name, false); |
| } |
| } |
| |
| // The integers here refer to which subsection of JLS 15.21 is in |
| // effect. 0 means no comparison is allowed. |
| private static final int truthtab[][] = { |
| // byte, comparable to itself, any numeric type, or any boxed |
| // numeric type. |
| { 1, 1, 1, 1, 1, 1, 1, 0, // Primitives |
| 1, 1, 1, 1, 1, 1, 1, 0, // Boxed primitives |
| 0, 0, 0, 0, 0, 0, 0, 0, // Captures |
| 0, 0, 0 // Reference types |
| }, |
| // short, comparable to itself, any numeric type, or any boxed |
| // numeric type. |
| { 1, 1, 1, 1, 1, 1, 1, 0, // Primitives |
| 1, 1, 1, 1, 1, 1, 1, 0, // Boxed primitives |
| 0, 0, 0, 0, 0, 0, 0, 0, // Captures |
| 0, 0, 0 // Reference types |
| }, |
| // char, comparable to itself, any numeric type, or any boxed |
| // numeric type. |
| { 1, 1, 1, 1, 1, 1, 1, 0, // Primitives |
| 1, 1, 1, 1, 1, 1, 1, 0, // Boxed primitives |
| 0, 0, 0, 0, 0, 0, 0, 0, // Captures |
| 0, 0, 0 // Reference types |
| }, |
| // int, comparable to itself, any numeric type, or any boxed |
| // numeric type. |
| { 1, 1, 1, 1, 1, 1, 1, 0, // Primitives |
| 1, 1, 1, 1, 1, 1, 1, 0, // Boxed primitives |
| 0, 0, 0, 0, 0, 0, 0, 0, // Captures |
| 0, 0, 0 // Reference types |
| }, |
| // long, comparable to itself, any numeric type, or any boxed |
| // numeric type. |
| { 1, 1, 1, 1, 1, 1, 1, 0, // Primitives |
| 1, 1, 1, 1, 1, 1, 1, 0, // Boxed primitives |
| 0, 0, 0, 0, 0, 0, 0, 0, // Captures |
| 0, 0, 0 // Reference types |
| }, |
| // float, comparable to itself, any numeric type, or any boxed |
| // numeric type. |
| { 1, 1, 1, 1, 1, 1, 1, 0, // Primitives |
| 1, 1, 1, 1, 1, 1, 1, 0, // Boxed primitives |
| 0, 0, 0, 0, 0, 0, 0, 0, // Captures |
| 0, 0, 0 // Reference types |
| }, |
| // double, comparable to itself, any numeric type, or any boxed |
| // numeric type. |
| { 1, 1, 1, 1, 1, 1, 1, 0, // Primitives |
| 1, 1, 1, 1, 1, 1, 1, 0, // Boxed primitives |
| 0, 0, 0, 0, 0, 0, 0, 0, // Captures |
| 0, 0, 0 // Reference types |
| }, |
| // boolean, comparable only to itself and Boolean. |
| { 0, 0, 0, 0, 0, 0, 0, 2, // Primitives |
| 0, 0, 0, 0, 0, 0, 0, 2, // Boxed primitives |
| 0, 0, 0, 0, 0, 0, 0, 0, // Captures |
| 0, 0, 0 // Reference types |
| }, |
| // Byte, comparable to itself, Number, Object, any numeric primitive, |
| // and any captures. |
| { 1, 1, 1, 1, 1, 1, 1, 0, // Primitives |
| 3, 0, 0, 0, 0, 0, 0, 0, // Boxed primitives |
| 3, 3, 3, 3, 3, 3, 3, 3, // Captures |
| 3, 3, 0 // Reference types |
| }, |
| // Short, comparable to itself, Number, Object, any numeric primitive, |
| // and any captures. |
| { 1, 1, 1, 1, 1, 1, 1, 0, // Primitives |
| 0, 3, 0, 0, 0, 0, 0, 0, // Boxed primitives |
| 3, 3, 3, 3, 3, 3, 3, 3, // Captures |
| 3, 3, 0 // Reference types |
| }, |
| // Character, comparable to itself, Object, any numeric primitive, |
| // and any captures. |
| { 1, 1, 1, 1, 1, 1, 1, 0, // Primitives |
| 0, 0, 3, 0, 0, 0, 0, 0, // Boxed primitives |
| 3, 3, 3, 3, 3, 3, 3, 3, // Captures |
| 3, 0, 0 // Reference types |
| }, |
| // Int, comparable to itself, Number, Object, any numeric primitive, |
| // and any captures. |
| { 1, 1, 1, 1, 1, 1, 1, 0, // Primitives |
| 0, 0, 0, 3, 0, 0, 0, 0, // Boxed primitives |
| 3, 3, 3, 3, 3, 3, 3, 3, // Captures |
| 3, 3, 0 // Reference types |
| }, |
| // Long, comparable to itself, Number, Object, any numeric primitive, |
| // and any captures. |
| { 1, 1, 1, 1, 1, 1, 1, 0, // Primitives |
| 0, 0, 0, 0, 3, 0, 0, 0, // Boxed primitives |
| 3, 3, 3, 3, 3, 3, 3, 3, // Captures |
| 3, 3, 0 // Reference types |
| }, |
| // Float, comparable to itself, Number, Object, any numeric primitive, |
| // and any captures. |
| { 1, 1, 1, 1, 1, 1, 1, 0, // Primitives |
| 0, 0, 0, 0, 0, 3, 0, 0, // Boxed primitives |
| 3, 3, 3, 3, 3, 3, 3, 3, // Captures |
| 3, 3, 0 // Reference types |
| }, |
| // Double, comparable to itself, Number, Object, any numeric primitive, |
| // and any captures. |
| { 1, 1, 1, 1, 1, 1, 1, 0, // Primitives |
| 0, 0, 0, 0, 0, 0, 3, 0, // Boxed primitives |
| 3, 3, 3, 3, 3, 3, 3, 3, // Captures |
| 3, 3, 0 // Reference types |
| }, |
| // Boolean, to itself, any capture, Object, and boolean. |
| { 0, 0, 0, 0, 0, 0, 0, 2, // Primitives |
| 0, 0, 0, 0, 0, 0, 0, 2, // Boxed primitives |
| 3, 3, 3, 3, 3, 3, 3, 3, // Captures |
| 3, 0, 0 // Reference types |
| }, |
| // Byte supertype wildcard, comparable to any reference type. |
| // and any captures. |
| { 0, 0, 0, 0, 0, 0, 0, 0, // Primitives |
| 3, 3, 3, 3, 3, 3, 3, 3, // Boxed primitives |
| 3, 3, 3, 3, 3, 3, 3, 3, // Captures |
| 3, 3, 3 // Reference types |
| }, |
| // Short supertype wildcard, comparable to any reference type. |
| // and any captures. |
| { 0, 0, 0, 0, 0, 0, 0, 0, // Primitives |
| 3, 3, 3, 3, 3, 3, 3, 3, // Boxed primitives |
| 3, 3, 3, 3, 3, 3, 3, 3, // Captures |
| 3, 3, 3 // Reference types |
| }, |
| // Character supertype wildcard, comparable to any reference type. |
| // and any captures. |
| { 0, 0, 0, 0, 0, 0, 0, 0, // Primitives |
| 3, 3, 3, 3, 3, 3, 3, 3, // Boxed primitives |
| 3, 3, 3, 3, 3, 3, 3, 3, // Captures |
| 3, 3, 3 // Reference types |
| }, |
| // Integer supertype wildcard, comparable to any reference type. |
| // and any captures. |
| { 0, 0, 0, 0, 0, 0, 0, 0, // Primitives |
| 3, 3, 3, 3, 3, 3, 3, 3, // Boxed primitives |
| 3, 3, 3, 3, 3, 3, 3, 3, // Captures |
| 3, 3, 3 // Reference types |
| }, |
| // Long supertype wildcard, comparable to any reference type. |
| // and any captures. |
| { 0, 0, 0, 0, 0, 0, 0, 0, // Primitives |
| 3, 3, 3, 3, 3, 3, 3, 3, // Boxed primitives |
| 3, 3, 3, 3, 3, 3, 3, 3, // Captures |
| 3, 3, 3 // Reference types |
| }, |
| // Float supertype wildcard, comparable to any reference type. |
| // and any captures. |
| { 0, 0, 0, 0, 0, 0, 0, 0, // Primitives |
| 3, 3, 3, 3, 3, 3, 3, 3, // Boxed primitives |
| 3, 3, 3, 3, 3, 3, 3, 3, // Captures |
| 3, 3, 3 // Reference types |
| }, |
| // Double supertype wildcard, comparable to any reference type. |
| // and any captures. |
| { 0, 0, 0, 0, 0, 0, 0, 0, // Primitives |
| 3, 3, 3, 3, 3, 3, 3, 3, // Boxed primitives |
| 3, 3, 3, 3, 3, 3, 3, 3, // Captures |
| 3, 3, 3 // Reference types |
| }, |
| // Boolean supertype wildcard, comparable to any reference type. |
| // and any captures. |
| { 0, 0, 0, 0, 0, 0, 0, 0, // Primitives |
| 3, 3, 3, 3, 3, 3, 3, 3, // Boxed primitives |
| 3, 3, 3, 3, 3, 3, 3, 3, // Captures |
| 3, 3, 3 // Reference types |
| }, |
| // Object, comparable to any reference type. |
| // and any captures. |
| { 0, 0, 0, 0, 0, 0, 0, 0, // Primitives |
| 3, 3, 3, 3, 3, 3, 3, 3, // Boxed primitives |
| 3, 3, 3, 3, 3, 3, 3, 3, // Captures |
| 3, 3, 3 // Reference types |
| }, |
| // Number, comparable to Object, any of its subclasses. |
| // and any captures. |
| { 0, 0, 0, 0, 0, 0, 0, 0, // Primitives |
| 3, 3, 0, 3, 3, 3, 3, 0, // Boxed primitives |
| 3, 3, 3, 3, 3, 3, 3, 3, // Captures |
| 3, 3, 0 // Reference types |
| }, |
| // String supertype wildcard, comparable to any reference type. |
| // and any captures. |
| { 0, 0, 0, 0, 0, 0, 0, 0, // Primitives |
| 0, 0, 0, 0, 0, 0, 0, 0, // Boxed primitives |
| 3, 3, 3, 3, 3, 3, 3, 3, // Captures |
| 3, 0, 3 // Reference types |
| } |
| }; |
| |
| private void assert_compile_fail(final File file, final String body) { |
| final String filename = file.getPath(); |
| final String[] args = { filename }; |
| final StringWriter sw = new StringWriter(); |
| final PrintWriter pw = new PrintWriter(sw); |
| final int rc = com.sun.tools.javac.Main.compile(args, pw); |
| pw.close(); |
| if (rc == 0) { |
| System.err.println("Compilation of " + file.getName() + |
| " didn't fail as expected.\nFile:\n" + |
| body + "\nOutput:\n" + sw.toString()); |
| errors++; |
| } |
| } |
| |
| private void assert_compile_succeed(final File file, final String body) { |
| final String filename = file.getPath(); |
| final String[] args = { filename }; |
| final StringWriter sw = new StringWriter(); |
| final PrintWriter pw = new PrintWriter(sw); |
| final int rc = com.sun.tools.javac.Main.compile(args, pw); |
| pw.close(); |
| if (rc != 0) { |
| System.err.println("Compilation of " + file.getName() + |
| " didn't succeed as expected.\nFile:\n" + |
| body + "\nOutput:\n" + |
| sw.toString()); |
| errors++; |
| } |
| } |
| |
| private String makeBody(final int num, |
| final CompareType left, |
| final CompareType right) { |
| return "import java.util.List;\n" + |
| "public class Test" + num + " {\n" + |
| " public boolean test(" + left.name + |
| " left, " + right.name + " right) {\n" + |
| " return left" + (left.isList ? ".get(0)" : "") + |
| " == right" + (right.isList ? ".get(0)" : "") + ";\n" + |
| " }\n" + |
| "}\n"; |
| } |
| |
| private File writeFile(final String filename, |
| final String body) |
| throws IOException { |
| final File f = new File(testdir, filename); |
| f.getParentFile().mkdirs(); |
| final FileWriter out = new FileWriter(f); |
| out.write(body); |
| out.close(); |
| return f; |
| } |
| |
| private void test(final CompareType left, final CompareType right) |
| throws IOException { |
| final int num = testnum++; |
| final String filename = "Test" + num + ".java"; |
| final String body = makeBody(num, left, right); |
| final File file = writeFile(filename, body); |
| if (truthtab[left.ordinal()][right.ordinal()] != 0) |
| assert_compile_succeed(file, body); |
| else |
| assert_compile_fail(file, body); |
| } |
| |
| void run() throws Exception { |
| testdir.mkdir(); |
| |
| for(CompareType left : CompareType.values()) |
| for(CompareType right : CompareType.values()) |
| test(left, right); |
| |
| if (errors != 0) |
| throw new Exception("ObjectZeroCompare test failed with " + |
| errors + " errors."); |
| } |
| |
| public static void main(String... args) throws Exception { |
| new TestComparisons().run(); |
| } |
| } |