211 lines
9.7 KiB
Java
211 lines
9.7 KiB
Java
/*
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* Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/* @test
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* @summary unit tests for java.lang.invoke.MethodHandles
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* @library /test/lib /java/lang/invoke/common
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* @compile MethodHandlesTest.java MethodHandlesSpreadArgumentsTest.java remote/RemoteExample.java
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* @run junit/othervm/timeout=2500 -XX:+IgnoreUnrecognizedVMOptions
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* -XX:-VerifyDependencies
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* -esa
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* test.java.lang.invoke.MethodHandlesSpreadArgumentsTest
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*/
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package test.java.lang.invoke;
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import org.junit.*;
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import test.java.lang.invoke.lib.CodeCacheOverflowProcessor;
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import java.lang.invoke.MethodHandle;
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import java.lang.invoke.MethodType;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.List;
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import static org.junit.Assert.*;
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public class MethodHandlesSpreadArgumentsTest extends MethodHandlesTest {
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@Test // SLOW
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public void testSpreadArguments() throws Throwable {
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CodeCacheOverflowProcessor.runMHTest(this::testSpreadArguments0);
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CodeCacheOverflowProcessor.runMHTest(this::testSpreadArguments1);
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}
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public void testSpreadArguments0() throws Throwable {
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if (CAN_SKIP_WORKING) return;
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startTest("spreadArguments");
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for (Class<?> argType : new Class<?>[]{Object.class, Integer.class, int.class}) {
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if (verbosity >= 3)
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System.out.println("spreadArguments "+argType);
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Class<?> arrayType = java.lang.reflect.Array.newInstance(argType, 0).getClass();
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for (int nargs = 0; nargs < 50; nargs++) {
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if (CAN_TEST_LIGHTLY && nargs > 11) break;
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for (int pos = 0; pos <= nargs; pos++) {
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if (CAN_TEST_LIGHTLY && pos > 2 && pos < nargs-2) continue;
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if (nargs > 10 && pos > 4 && pos < nargs-4 && pos % 10 != 3)
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continue;
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testSpreadArguments(argType, arrayType, pos, nargs);
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}
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}
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}
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}
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public void testSpreadArguments(Class<?> argType, Class<?> arrayType, int pos, int nargs) throws Throwable {
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countTest();
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MethodHandle target2 = varargsArray(arrayType, nargs);
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MethodHandle target = target2.asType(target2.type().generic());
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if (verbosity >= 3)
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System.out.println("spread into "+target2+" ["+pos+".."+nargs+"]");
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Object[] args = randomArgs(target2.type().parameterArray());
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// make sure the target does what we think it does:
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checkTarget(argType, pos, nargs, target, args);
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List<Class<?>> newParams = new ArrayList<>(target2.type().parameterList());
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{ // modify newParams in place
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List<Class<?>> spreadParams = newParams.subList(pos, nargs);
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spreadParams.clear(); spreadParams.add(arrayType);
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}
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MethodType newType = MethodType.methodType(arrayType, newParams);
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MethodHandle result = target2.asSpreader(arrayType, nargs-pos);
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assert(result.type() == newType) : Arrays.asList(result, newType);
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result = result.asType(newType.generic());
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Object returnValue;
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if (pos == 0) {
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Object args2 = ValueConversions.changeArrayType(arrayType, Arrays.copyOfRange(args, pos, args.length));
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returnValue = result.invokeExact(args2);
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} else {
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Object[] args1 = Arrays.copyOfRange(args, 0, pos+1);
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args1[pos] = ValueConversions.changeArrayType(arrayType, Arrays.copyOfRange(args, pos, args.length));
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returnValue = result.invokeWithArguments(args1);
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}
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checkReturnValue(argType, args, result, returnValue);
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}
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public void testSpreadArguments1() throws Throwable {
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if (CAN_SKIP_WORKING) return;
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startTest("spreadArguments/pos");
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for (Class<?> argType : new Class<?>[]{Object.class, Integer.class, int.class}) {
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if (verbosity >= 3)
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System.out.println("spreadArguments "+argType);
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Class<?> arrayType = java.lang.reflect.Array.newInstance(argType, 0).getClass();
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for (int nargs = 0; nargs < 50; nargs++) {
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if (CAN_TEST_LIGHTLY && nargs > 11) break;
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for (int pos = 0; pos <= nargs; pos++) {
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if (CAN_TEST_LIGHTLY && pos > 2 && pos < nargs-2) continue;
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if (nargs > 10 && pos > 4 && pos < nargs-4 && pos % 10 != 3)
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continue;
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for (int spr = 1; spr < nargs - pos; ++spr) {
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if (spr > 4 && spr != 7 && spr != 11 && spr != 20 && spr < nargs - pos - 4) continue;
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testSpreadArguments(argType, arrayType, pos, spr, nargs);
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}
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}
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}
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}
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}
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public void testSpreadArguments(Class<?> argType, Class<?> arrayType,
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int pos, int spread, int nargs) throws Throwable {
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countTest();
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MethodHandle target2 = varargsArray(arrayType, nargs);
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MethodHandle target = target2.asType(target2.type().generic());
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if (verbosity >= 3)
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System.out.println("spread into " + target2 + " [" + pos + ".." + (pos + spread) + "[");
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Object[] args = randomArgs(target2.type().parameterArray());
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// make sure the target does what we think it does:
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checkTarget(argType, pos, nargs, target, args);
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List<Class<?>> newParams = new ArrayList<>(target2.type().parameterList());
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{ // modify newParams in place
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List<Class<?>> spreadParams = newParams.subList(pos, pos + spread);
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spreadParams.clear();
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spreadParams.add(arrayType);
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}
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MethodType newType = MethodType.methodType(arrayType, newParams);
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MethodHandle result = target2.asSpreader(pos, arrayType, spread);
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assert (result.type() == newType) : Arrays.asList(result, newType);
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result = result.asType(newType.generic());
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// args1 has nargs-spread entries, plus one for the to-be-spread array
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int args1Length = nargs - (spread - 1);
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Object[] args1 = new Object[args1Length];
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System.arraycopy(args, 0, args1, 0, pos);
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args1[pos] = ValueConversions.changeArrayType(arrayType, Arrays.copyOfRange(args, pos, pos + spread));
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System.arraycopy(args, pos + spread, args1, pos + 1, nargs - spread - pos);
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Object returnValue = result.invokeWithArguments(args1);
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checkReturnValue(argType, args, result, returnValue);
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}
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private static void checkTarget(Class<?> argType, int pos, int nargs,
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MethodHandle target, Object[] args) throws Throwable {
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if (pos == 0 && nargs < 5 && !argType.isPrimitive()) {
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Object[] check = (Object[]) target.invokeWithArguments(args);
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assertArrayEquals(args, check);
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switch (nargs) {
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case 0:
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check = (Object[]) (Object) target.invokeExact();
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assertArrayEquals(args, check);
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break;
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case 1:
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check = (Object[]) (Object) target.invokeExact(args[0]);
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assertArrayEquals(args, check);
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break;
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case 2:
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check = (Object[]) (Object) target.invokeExact(args[0], args[1]);
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assertArrayEquals(args, check);
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break;
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}
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}
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}
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private static void checkReturnValue(Class<?> argType, Object[] args, MethodHandle result, Object returnValue) {
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String argstr = Arrays.toString(args);
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if (!argType.isPrimitive()) {
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Object[] rv = (Object[]) returnValue;
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String rvs = Arrays.toString(rv);
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if (!Arrays.equals(args, rv)) {
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System.out.println("method: "+result);
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System.out.println("expected: "+argstr);
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System.out.println("returned: "+rvs);
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assertArrayEquals(args, rv);
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}
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} else if (argType == int.class) {
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String rvs = Arrays.toString((int[]) returnValue);
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if (!argstr.equals(rvs)) {
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System.out.println("method: "+result);
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System.out.println("expected: "+argstr);
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System.out.println("returned: "+rvs);
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assertEquals(argstr, rvs);
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}
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} else if (argType == long.class) {
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String rvs = Arrays.toString((long[]) returnValue);
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if (!argstr.equals(rvs)) {
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System.out.println("method: "+result);
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System.out.println("expected: "+argstr);
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System.out.println("returned: "+rvs);
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assertEquals(argstr, rvs);
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}
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} else {
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// cannot test...
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}
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}
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}
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