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/*
* 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);
}
}
}
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