| /* |
| * Copyright (c) 2010, 2013, 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 8022066 |
| * @summary smoke test for method handle constants |
| * @build indify.Indify |
| * @compile MethodHandleConstants.java |
| * @run main/othervm |
| * indify.Indify |
| * --verify-specifier-count=4 |
| * --expand-properties --classpath ${test.classes} |
| * --java test.java.lang.invoke.MethodHandleConstants --check-output |
| * @run main/othervm |
| * indify.Indify |
| * --expand-properties --classpath ${test.classes} |
| * --java test.java.lang.invoke.MethodHandleConstants --security-manager |
| */ |
| |
| package test.java.lang.invoke; |
| |
| import java.util.*; |
| import java.io.*; |
| import java.lang.invoke.*; |
| import java.security.*; |
| |
| import static java.lang.invoke.MethodHandles.*; |
| import static java.lang.invoke.MethodType.*; |
| |
| public class MethodHandleConstants { |
| public static void main(String... av) throws Throwable { |
| if (av.length > 0 && av[0].equals("--check-output")) openBuf(); |
| if (av.length > 0 && av[0].equals("--security-manager")) setSM(); |
| System.out.println("Obtaining method handle constants:"); |
| testCase(MH_String_replace_C2(), String.class, "replace", String.class, String.class, char.class, char.class); |
| testCase(MH_MethodHandle_invokeExact_SC2(), MethodHandle.class, "invokeExact", String.class, MethodHandle.class, String.class, char.class, char.class); |
| testCase(MH_MethodHandle_invoke_SC2(), MethodHandle.class, "invoke", String.class, MethodHandle.class, String.class, char.class, char.class); |
| testCase(MH_Class_forName_S(), Class.class, "forName", Class.class, String.class); |
| testCase(MH_Class_forName_SbCL(), Class.class, "forName", Class.class, String.class, boolean.class, ClassLoader.class); |
| System.out.println("Done."); |
| closeBuf(); |
| } |
| |
| private static void testCase(MethodHandle mh, Class<?> defc, String name, Class<?> rtype, Class<?>... ptypes) throws Throwable { |
| System.out.println(mh); |
| // we include defc, because we assume it is a non-static MH: |
| MethodType mt = methodType(rtype, ptypes); |
| assertEquals(mh.type(), mt); |
| // FIXME: Use revealDirect to find out more |
| } |
| private static void assertEquals(Object exp, Object act) { |
| if (exp == act || (exp != null && exp.equals(act))) return; |
| throw new AssertionError("not equal: "+exp+", "+act); |
| } |
| |
| private static void setSM() { |
| Policy.setPolicy(new TestPolicy()); |
| System.setSecurityManager(new SecurityManager()); |
| } |
| |
| private static PrintStream oldOut; |
| private static ByteArrayOutputStream buf; |
| private static void openBuf() { |
| oldOut = System.out; |
| buf = new ByteArrayOutputStream(); |
| System.setOut(new PrintStream(buf)); |
| } |
| private static void closeBuf() { |
| if (buf == null) return; |
| System.out.flush(); |
| System.setOut(oldOut); |
| String[] haveLines = new String(buf.toByteArray()).split("[\n\r]+"); |
| for (String line : haveLines) System.out.println(line); |
| Iterator<String> iter = Arrays.asList(haveLines).iterator(); |
| for (String want : EXPECT_OUTPUT) { |
| String have = iter.hasNext() ? iter.next() : "[EOF]"; |
| if (want.equals(have)) continue; |
| System.err.println("want line: "+want); |
| System.err.println("have line: "+have); |
| throw new AssertionError("unexpected output: "+have); |
| } |
| if (iter.hasNext()) |
| throw new AssertionError("unexpected output: "+iter.next()); |
| } |
| private static final String[] EXPECT_OUTPUT = { |
| "Obtaining method handle constants:", |
| "MethodHandle(String,char,char)String", |
| "MethodHandle(MethodHandle,String,char,char)String", |
| "MethodHandle(MethodHandle,String,char,char)String", |
| "MethodHandle(String)Class", |
| "MethodHandle(String,boolean,ClassLoader)Class", |
| "Done." |
| }; |
| |
| // String.replace(String, char, char) |
| private static MethodType MT_String_replace_C2() { |
| shouldNotCallThis(); |
| return methodType(String.class, char.class, char.class); |
| } |
| private static MethodHandle MH_String_replace_C2() throws ReflectiveOperationException { |
| shouldNotCallThis(); |
| return lookup().findVirtual(String.class, "replace", MT_String_replace_C2()); |
| } |
| |
| // MethodHandle.invokeExact(...) |
| private static MethodType MT_MethodHandle_invokeExact_SC2() { |
| shouldNotCallThis(); |
| return methodType(String.class, String.class, char.class, char.class); |
| } |
| private static MethodHandle MH_MethodHandle_invokeExact_SC2() throws ReflectiveOperationException { |
| shouldNotCallThis(); |
| return lookup().findVirtual(MethodHandle.class, "invokeExact", MT_MethodHandle_invokeExact_SC2()); |
| } |
| |
| // MethodHandle.invoke(...) |
| private static MethodType MT_MethodHandle_invoke_SC2() { |
| shouldNotCallThis(); |
| return methodType(String.class, String.class, char.class, char.class); |
| } |
| private static MethodHandle MH_MethodHandle_invoke_SC2() throws ReflectiveOperationException { |
| shouldNotCallThis(); |
| return lookup().findVirtual(MethodHandle.class, "invoke", MT_MethodHandle_invoke_SC2()); |
| } |
| |
| // Class.forName(String) |
| private static MethodType MT_Class_forName_S() { |
| shouldNotCallThis(); |
| return methodType(Class.class, String.class); |
| } |
| private static MethodHandle MH_Class_forName_S() throws ReflectiveOperationException { |
| shouldNotCallThis(); |
| return lookup().findStatic(Class.class, "forName", MT_Class_forName_S()); |
| } |
| |
| // Class.forName(String, boolean, ClassLoader) |
| private static MethodType MT_Class_forName_SbCL() { |
| shouldNotCallThis(); |
| return methodType(Class.class, String.class, boolean.class, ClassLoader.class); |
| } |
| private static MethodHandle MH_Class_forName_SbCL() throws ReflectiveOperationException { |
| shouldNotCallThis(); |
| return lookup().findStatic(Class.class, "forName", MT_Class_forName_SbCL()); |
| } |
| |
| private static void shouldNotCallThis() { |
| // if this gets called, the transformation has not taken place |
| if (System.getProperty("MethodHandleConstants.allow-untransformed") != null) return; |
| throw new AssertionError("this code should be statically transformed away by Indify"); |
| } |
| |
| static class TestPolicy extends Policy { |
| final PermissionCollection permissions = new Permissions(); |
| TestPolicy() { |
| permissions.add(new java.io.FilePermission("<<ALL FILES>>", "read")); |
| } |
| public PermissionCollection getPermissions(ProtectionDomain domain) { |
| return permissions; |
| } |
| |
| public PermissionCollection getPermissions(CodeSource codesource) { |
| return permissions; |
| } |
| |
| public boolean implies(ProtectionDomain domain, Permission perm) { |
| return permissions.implies(perm); |
| } |
| } |
| } |