--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/test/java/dyn/MethodHandlesTest.java Wed Oct 21 23:19:48 2009 -0700
@@ -0,0 +1,881 @@
+/*
+ * Copyright 2009 Sun Microsystems, Inc. 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. Sun designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Sun in the LICENSE file that accompanied this code.
+ *
+ * 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+/* @test
+ * @summary unit tests for java.dyn.MethodHandles
+ * @compile -XDinvokedynamic MethodHandlesTest.java
+ * @run junit/othervm -XX:+UnlockExperimentalVMOptions -XX:+EnableInvokeDynamic jdk.java.dyn.MethodHandlesTest
+ */
+
+package jdk.java.dyn;
+
+import java.dyn.*;
+import java.dyn.MethodHandles.Lookup;
+import java.lang.reflect.*;
+import java.util.*;
+import org.junit.*;
+import static org.junit.Assert.*;
+import static org.junit.Assume.assumeTrue;
+
+
+/**
+ *
+ * @author jrose
+ */
+public class MethodHandlesTest {
+ // How much output?
+ static int verbosity = 1;
+
+ // Set this true during development if you want to fast-forward to
+ // a particular new, non-working test. Tests which are known to
+ // work (or have recently worked) test this flag and return on true.
+ static boolean CAN_SKIP_WORKING = false;
+ //static { CAN_SKIP_WORKING = true; }
+
+ // Set true to test more calls. If false, some tests are just
+ // lookups, without exercising the actual method handle.
+ static boolean DO_MORE_CALLS = false;
+
+
+ @Test
+ public void testFirst() throws Throwable {
+ verbosity += 9; try {
+ // left blank for debugging
+ } finally { verbosity -= 9; }
+ }
+
+ static final int MAX_ARG_INCREASE = 3;
+
+ public MethodHandlesTest() {
+ }
+
+ @Before
+ public void checkImplementedPlatform() {
+ boolean platformOK = false;
+ Properties properties = System.getProperties();
+ String vers = properties.getProperty("java.vm.version");
+ String name = properties.getProperty("java.vm.name");
+ String arch = properties.getProperty("os.arch");
+ if (arch.equals("i386") &&
+ (name.contains("Client") || name.contains("Server"))
+ ) {
+ platformOK = true;
+ } else {
+ System.err.println("Skipping tests for unsupported platform: "+Arrays.asList(vers, name, arch));
+ }
+ assumeTrue(platformOK);
+ }
+
+ String testName;
+ int posTests, negTests;
+ @After
+ public void printCounts() {
+ if (verbosity >= 1 && (posTests | negTests) != 0) {
+ System.out.println();
+ if (posTests != 0) System.out.println("=== "+testName+": "+posTests+" positive test cases run");
+ if (negTests != 0) System.out.println("=== "+testName+": "+negTests+" negative test cases run");
+ }
+ }
+ void countTest(boolean positive) {
+ if (positive) ++posTests;
+ else ++negTests;
+ }
+ void countTest() { countTest(true); }
+ void startTest(String name) {
+ if (testName != null) printCounts();
+ if (verbosity >= 0)
+ System.out.println(name);
+ posTests = negTests = 0;
+ testName = name;
+ }
+
+ @BeforeClass
+ public static void setUpClass() throws Exception {
+ calledLog.clear();
+ calledLog.add(null);
+ nextArg = 1000000;
+ }
+
+ @AfterClass
+ public static void tearDownClass() throws Exception {
+ }
+
+ static List<Object> calledLog = new ArrayList<Object>();
+ static Object logEntry(String name, Object... args) {
+ return Arrays.asList(name, Arrays.asList(args));
+ }
+ static Object called(String name, Object... args) {
+ Object entry = logEntry(name, args);
+ calledLog.add(entry);
+ return entry;
+ }
+ static void assertCalled(String name, Object... args) {
+ Object expected = logEntry(name, args);
+ Object actual = calledLog.get(calledLog.size() - 1);
+ if (expected.equals(actual)) return;
+ System.out.println("assertCalled "+name+":");
+ System.out.println("expected: "+expected);
+ System.out.println("actual: "+actual);
+ System.out.println("ex. types: "+getClasses(expected));
+ System.out.println("act. types: "+getClasses(actual));
+ assertEquals("previous method call types", expected, actual);
+ assertEquals("previous method call", expected, actual);
+ }
+ static void printCalled(MethodHandle target, String name, Object... args) {
+ if (verbosity >= 2)
+ System.out.println("calling "+logEntry(name, args)+" on "+target);
+ }
+
+ static Object castToWrapper(Object value, Class<?> dst) {
+ Object wrap = null;
+ if (value instanceof Number)
+ wrap = castToWrapperOrNull(((Number)value).longValue(), dst);
+ if (value instanceof Character)
+ wrap = castToWrapperOrNull((char)(Character)value, dst);
+ if (wrap != null) return wrap;
+ return dst.cast(value);
+ }
+
+ static Object castToWrapperOrNull(long value, Class<?> dst) {
+ if (dst == int.class || dst == Integer.class)
+ return (int)(value);
+ if (dst == long.class || dst == Long.class)
+ return (long)(value);
+ if (dst == char.class || dst == Character.class)
+ return (char)(value);
+ if (dst == short.class || dst == Short.class)
+ return (short)(value);
+ if (dst == float.class || dst == Float.class)
+ return (float)(value);
+ if (dst == double.class || dst == Double.class)
+ return (double)(value);
+ return null;
+ }
+
+ static int nextArg;
+ static Object randomArg(Class<?> param) {
+ Object wrap = castToWrapperOrNull(nextArg, param);
+ if (wrap != null) {
+ nextArg++;
+ return wrap;
+ }
+// import sun.dyn.util.Wrapper;
+// Wrapper wrap = Wrapper.forBasicType(dst);
+// if (wrap == Wrapper.OBJECT && Wrapper.isWrapperType(dst))
+// wrap = Wrapper.forWrapperType(dst);
+// if (wrap != Wrapper.OBJECT)
+// return wrap.wrap(nextArg++);
+ if (param.isInterface() || param.isAssignableFrom(String.class))
+ return "#"+(nextArg++);
+ else
+ try {
+ return param.newInstance();
+ } catch (InstantiationException ex) {
+ } catch (IllegalAccessException ex) {
+ }
+ return null; // random class not Object, String, Integer, etc.
+ }
+ static Object[] randomArgs(Class<?>... params) {
+ Object[] args = new Object[params.length];
+ for (int i = 0; i < args.length; i++)
+ args[i] = randomArg(params[i]);
+ return args;
+ }
+ static Object[] randomArgs(int nargs, Class<?> param) {
+ Object[] args = new Object[nargs];
+ for (int i = 0; i < args.length; i++)
+ args[i] = randomArg(param);
+ return args;
+ }
+
+ static <T, E extends T> T[] array(Class<T[]> atype, E... a) {
+ return Arrays.copyOf(a, a.length, atype);
+ }
+ static <T> T[] cat(T[] a, T... b) {
+ int alen = a.length, blen = b.length;
+ if (blen == 0) return a;
+ T[] c = Arrays.copyOf(a, alen + blen);
+ System.arraycopy(b, 0, c, alen, blen);
+ return c;
+ }
+ static Integer[] boxAll(int... vx) {
+ Integer[] res = new Integer[vx.length];
+ for (int i = 0; i < res.length; i++) {
+ res[i] = vx[i];
+ }
+ return res;
+ }
+ static Object getClasses(Object x) {
+ if (x == null) return x;
+ if (x instanceof String) return x; // keep the name
+ if (x instanceof List) {
+ // recursively report classes of the list elements
+ Object[] xa = ((List)x).toArray();
+ for (int i = 0; i < xa.length; i++)
+ xa[i] = getClasses(xa[i]);
+ return Arrays.asList(xa);
+ }
+ return x.getClass().getSimpleName();
+ }
+
+ static MethodHandle changeArgTypes(MethodHandle target, Class<?> argType) {
+ return changeArgTypes(target, 0, 999, argType);
+ }
+ static MethodHandle changeArgTypes(MethodHandle target,
+ int beg, int end, Class<?> argType) {
+ MethodType targetType = target.type();
+ end = Math.min(end, targetType.parameterCount());
+ ArrayList<Class<?>> argTypes = new ArrayList<Class<?>>(targetType.parameterList());
+ Collections.fill(argTypes.subList(beg, end), argType);
+ MethodType ttype2 = MethodType.make(targetType.returnType(), argTypes);
+ return MethodHandles.convertArguments(target, ttype2);
+ }
+
+ // This lookup is good for all members in and under MethodHandlesTest.
+ static final Lookup PRIVATE = MethodHandles.lookup();
+ // This lookup is good for package-private members but not private ones.
+ static final Lookup PACKAGE = PackageSibling.lookup();
+ // This lookup is good only for public members.
+ static final Lookup PUBLIC = MethodHandles.Lookup.PUBLIC_LOOKUP;
+
+ // Subject methods...
+ static class Example implements IntExample {
+ final String name;
+ public Example() { name = "Example#"+(nextArg++); }
+ protected Example(String name) { this.name = name; }
+ protected Example(int x) { this(); called("protected <init>", this, x); }
+ @Override public String toString() { return name; }
+
+ public void v0() { called("v0", this); }
+ void pkg_v0() { called("pkg_v0", this); }
+ private void pri_v0() { called("pri_v0", this); }
+ public static void s0() { called("s0"); }
+ static void pkg_s0() { called("pkg_s0"); }
+ private static void pri_s0() { called("pri_s0"); }
+
+ public Object v1(Object x) { return called("v1", this, x); }
+ public Object v2(Object x, Object y) { return called("v2", this, x, y); }
+ public Object v2(Object x, int y) { return called("v2", this, x, y); }
+ public Object v2(int x, Object y) { return called("v2", this, x, y); }
+ public Object v2(int x, int y) { return called("v2", this, x, y); }
+ public static Object s1(Object x) { return called("s1", x); }
+ public static Object s2(int x) { return called("s2", x); }
+ public static Object s3(long x) { return called("s3", x); }
+ public static Object s4(int x, int y) { return called("s4", x, y); }
+ public static Object s5(long x, int y) { return called("s5", x, y); }
+ public static Object s6(int x, long y) { return called("s6", x, y); }
+ public static Object s7(float x, double y) { return called("s7", x, y); }
+ }
+ public static class PubExample extends Example {
+ }
+ static class SubExample extends Example {
+ @Override public void v0() { called("Sub/v0", this); }
+ @Override void pkg_v0() { called("Sub/pkg_v0", this); }
+ private SubExample(int x) { called("<init>", this, x); }
+ public SubExample() { super("SubExample#"+(nextArg++)); }
+ }
+ public static interface IntExample {
+ public void v0();
+ static class Impl implements IntExample {
+ public void v0() { called("Int/v0", this); }
+ final String name;
+ public Impl() { name = "Example#"+(nextArg++); }
+ }
+ }
+
+ static final Object[][][] ACCESS_CASES = {
+ { { true, PRIVATE } } // only one test case at present
+ };
+
+ static Object[][] accessCases(Class<?> defc, String name) {
+ return ACCESS_CASES[0];
+ }
+
+ @Test
+ public void testFindStatic() throws Throwable {
+ if (CAN_SKIP_WORKING) return;
+ startTest("findStatic");
+ testFindStatic(PubExample.class, void.class, "s0");
+ testFindStatic(Example.class, void.class, "s0");
+ testFindStatic(Example.class, void.class, "pkg_s0");
+ testFindStatic(Example.class, void.class, "pri_s0");
+
+ testFindStatic(Example.class, Object.class, "s1", Object.class);
+ testFindStatic(Example.class, Object.class, "s2", int.class);
+ testFindStatic(Example.class, Object.class, "s3", long.class);
+ testFindStatic(Example.class, Object.class, "s4", int.class, int.class);
+ testFindStatic(Example.class, Object.class, "s5", long.class, int.class);
+ testFindStatic(Example.class, Object.class, "s6", int.class, long.class);
+ testFindStatic(Example.class, Object.class, "s7", float.class, double.class);
+
+ testFindStatic(false, PRIVATE, Example.class, void.class, "bogus");
+ }
+
+ void testFindStatic(Class<?> defc, Class<?> ret, String name, Class<?>... params) throws Throwable {
+ for (Object[] ac : accessCases(defc, name)) {
+ testFindStatic((Boolean)ac[0], (Lookup)ac[1], defc, ret, name, params);
+ }
+ }
+ void testFindStatic(Lookup lookup, Class<?> defc, Class<?> ret, String name, Class<?>... params) throws Throwable {
+ testFindStatic(true, lookup, defc, ret, name, params);
+ }
+ void testFindStatic(boolean positive, Lookup lookup, Class<?> defc, Class<?> ret, String name, Class<?>... params) throws Throwable {
+ countTest(positive);
+ MethodType type = MethodType.make(ret, params);
+ MethodHandle target = null;
+ RuntimeException noAccess = null;
+ try {
+ target = lookup.findStatic(defc, name, type);
+ } catch (NoAccessException ex) {
+ noAccess = ex;
+ }
+ if (verbosity >= 2)
+ System.out.println("findStatic "+lookup+": "+defc+"."+name+"/"+type+" => "+target
+ +(noAccess == null ? "" : " !! "+noAccess));
+ if (positive && noAccess != null) throw noAccess;
+ assertEquals(positive ? "positive test" : "negative test erroneously passed", positive, target != null);
+ if (!positive) return; // negative test failed as expected
+ assertEquals(type, target.type());
+ assertTrue(target.toString().contains(name)); // rough check
+ if (!DO_MORE_CALLS && lookup != PRIVATE) return;
+ Object[] args = randomArgs(params);
+ printCalled(target, name, args);
+ MethodHandles.invoke(target, args);
+ assertCalled(name, args);
+ System.out.print(':');
+ }
+
+ @Test
+ public void testFindVirtual() throws Throwable {
+ if (CAN_SKIP_WORKING) return;
+ startTest("findVirtual");
+ testFindVirtual(Example.class, void.class, "v0");
+ testFindVirtual(Example.class, void.class, "pkg_v0");
+ testFindVirtual(Example.class, void.class, "pri_v0");
+ testFindVirtual(Example.class, Object.class, "v1", Object.class);
+ testFindVirtual(Example.class, Object.class, "v2", Object.class, Object.class);
+ testFindVirtual(Example.class, Object.class, "v2", Object.class, int.class);
+ testFindVirtual(Example.class, Object.class, "v2", int.class, Object.class);
+ testFindVirtual(Example.class, Object.class, "v2", int.class, int.class);
+ testFindVirtual(false, PRIVATE, Example.class, Example.class, void.class, "bogus");
+ // test dispatch
+ testFindVirtual(SubExample.class, SubExample.class, void.class, "Sub/v0");
+ testFindVirtual(SubExample.class, Example.class, void.class, "Sub/v0");
+ testFindVirtual(SubExample.class, IntExample.class, void.class, "Sub/v0");
+ testFindVirtual(SubExample.class, SubExample.class, void.class, "Sub/pkg_v0");
+ testFindVirtual(SubExample.class, Example.class, void.class, "Sub/pkg_v0");
+ testFindVirtual(Example.class, IntExample.class, void.class, "v0");
+ testFindVirtual(IntExample.Impl.class, IntExample.class, void.class, "Int/v0");
+ }
+
+ void testFindVirtual(Class<?> defc, Class<?> ret, String name, Class<?>... params) throws Throwable {
+ Class<?> rcvc = defc;
+ testFindVirtual(rcvc, defc, ret, name, params);
+ }
+ void testFindVirtual(Class<?> rcvc, Class<?> defc, Class<?> ret, String name, Class<?>... params) throws Throwable {
+ for (Object[] ac : accessCases(defc, name)) {
+ testFindVirtual((Boolean)ac[0], (Lookup)ac[1], rcvc, defc, ret, name, params);
+ }
+ }
+ void testFindVirtual(Lookup lookup, Class<?> rcvc, Class<?> defc, Class<?> ret, String name, Class<?>... params) throws Throwable {
+ testFindVirtual(true, lookup, rcvc, defc, ret, name, params);
+ }
+ void testFindVirtual(boolean positive, Lookup lookup, Class<?> rcvc, Class<?> defc, Class<?> ret, String name, Class<?>... params) throws Throwable {
+ countTest(positive);
+ String methodName = name.substring(1 + name.indexOf('/')); // foo/bar => foo
+ MethodType type = MethodType.make(ret, params);
+ MethodHandle target = null;
+ RuntimeException noAccess = null;
+ try {
+ target = lookup.findVirtual(defc, methodName, type);
+ } catch (NoAccessException ex) {
+ noAccess = ex;
+ }
+ if (verbosity >= 2)
+ System.out.println("findVirtual "+lookup+": "+defc+"."+name+"/"+type+" => "+target
+ +(noAccess == null ? "" : " !! "+noAccess));
+ if (positive && noAccess != null) throw noAccess;
+ assertEquals(positive ? "positive test" : "negative test erroneously passed", positive, target != null);
+ if (!positive) return; // negative test failed as expected
+ Class<?>[] paramsWithSelf = cat(array(Class[].class, (Class)defc), params);
+ MethodType typeWithSelf = MethodType.make(ret, paramsWithSelf);
+ MethodType ttype = target.type();
+ ttype = ttype.changeParameterType(0, defc); // FIXME: test this
+ assertEquals(typeWithSelf, ttype);
+ assertTrue(target.toString().contains(methodName)); // rough check
+ if (!DO_MORE_CALLS && lookup != PRIVATE) return;
+ Object[] argsWithSelf = randomArgs(paramsWithSelf);
+ if (rcvc != defc) argsWithSelf[0] = randomArg(rcvc);
+ printCalled(target, name, argsWithSelf);
+ MethodHandles.invoke(target, argsWithSelf);
+ assertCalled(name, argsWithSelf);
+ System.out.print(':');
+ }
+
+ @Test
+ public void testFindSpecial() throws Throwable {
+ if (CAN_SKIP_WORKING) return;
+ startTest("findSpecial");
+ testFindSpecial(Example.class, void.class, "v0");
+ testFindSpecial(Example.class, void.class, "pkg_v0");
+ testFindSpecial(false, PRIVATE, Example.class, void.class, "<init>", int.class);
+ testFindSpecial(false, PRIVATE, Example.class, void.class, "bogus");
+ }
+
+ void testFindSpecial(Class<?> defc, Class<?> ret, String name, Class<?>... params) throws Throwable {
+ testFindSpecial(true, PRIVATE, defc, ret, name, params);
+ testFindSpecial(false, PACKAGE, defc, ret, name, params);
+ testFindSpecial(false, PUBLIC, defc, ret, name, params);
+ }
+ void testFindSpecial(boolean positive, Lookup lookup, Class<?> defc, Class<?> ret, String name, Class<?>... params) throws Throwable {
+ countTest(positive);
+ MethodType type = MethodType.make(ret, params);
+ MethodHandle target = null;
+ RuntimeException noAccess = null;
+ try {
+ target = lookup.findSpecial(defc, name, type, defc);
+ } catch (NoAccessException ex) {
+ noAccess = ex;
+ }
+ if (verbosity >= 2)
+ System.out.println("findSpecial "+defc+"."+name+"/"+type+" => "+target
+ +(noAccess == null ? "" : " !! "+noAccess));
+ if (positive && noAccess != null) throw noAccess;
+ assertEquals(positive ? "positive test" : "negative test erroneously passed", positive, target != null);
+ if (!positive) return; // negative test failed as expected
+ Class<?>[] paramsWithSelf = cat(array(Class[].class, (Class)defc), params);
+ MethodType typeWithSelf = MethodType.make(ret, paramsWithSelf);
+ MethodType ttype = target.type();
+ ttype = ttype.changeParameterType(0, defc); // FIXME: test this
+ assertEquals(typeWithSelf, ttype);
+ assertTrue(target.toString().contains(name)); // rough check
+ if (!DO_MORE_CALLS && lookup != PRIVATE) return;
+ Object[] args = randomArgs(paramsWithSelf);
+ printCalled(target, name, args);
+ MethodHandles.invoke(target, args);
+ assertCalled(name, args);
+ System.out.print(':');
+ }
+
+ @Test
+ public void testBind() throws Throwable {
+ if (CAN_SKIP_WORKING) return;
+ startTest("bind");
+ testBind(Example.class, void.class, "v0");
+ testBind(Example.class, void.class, "pkg_v0");
+ testBind(Example.class, void.class, "pri_v0");
+ testBind(Example.class, Object.class, "v1", Object.class);
+ testBind(Example.class, Object.class, "v2", Object.class, Object.class);
+ testBind(Example.class, Object.class, "v2", Object.class, int.class);
+ testBind(Example.class, Object.class, "v2", int.class, Object.class);
+ testBind(Example.class, Object.class, "v2", int.class, int.class);
+ testBind(false, PRIVATE, Example.class, void.class, "bogus");
+ testBind(SubExample.class, void.class, "Sub/v0");
+ testBind(SubExample.class, void.class, "Sub/pkg_v0");
+ testBind(IntExample.Impl.class, void.class, "Int/v0");
+ }
+
+ void testBind(Class<?> defc, Class<?> ret, String name, Class<?>... params) throws Throwable {
+ for (Object[] ac : accessCases(defc, name)) {
+ testBind((Boolean)ac[0], (Lookup)ac[1], defc, ret, name, params);
+ }
+ }
+
+ void testBind(boolean positive, Lookup lookup, Class<?> defc, Class<?> ret, String name, Class<?>... params) throws Throwable {
+ countTest(positive);
+ String methodName = name.substring(1 + name.indexOf('/')); // foo/bar => foo
+ MethodType type = MethodType.make(ret, params);
+ Object receiver = randomArg(defc);
+ MethodHandle target = null;
+ RuntimeException noAccess = null;
+ try {
+ target = lookup.bind(receiver, methodName, type);
+ } catch (NoAccessException ex) {
+ noAccess = ex;
+ }
+ if (verbosity >= 2)
+ System.out.println("bind "+receiver+"."+name+"/"+type+" => "+target
+ +(noAccess == null ? "" : " !! "+noAccess));
+ if (positive && noAccess != null) throw noAccess;
+ assertEquals(positive ? "positive test" : "negative test erroneously passed", positive, target != null);
+ if (!positive) return; // negative test failed as expected
+ assertEquals(type, target.type());
+ Object[] args = randomArgs(params);
+ printCalled(target, name, args);
+ MethodHandles.invoke(target, args);
+ Object[] argsWithReceiver = cat(array(Object[].class, receiver), args);
+ assertCalled(name, argsWithReceiver);
+ System.out.print(':');
+ }
+
+ @Test
+ public void testUnreflect() throws Throwable {
+ if (CAN_SKIP_WORKING) return;
+ startTest("unreflect");
+ testUnreflect(Example.class, true, void.class, "s0");
+ testUnreflect(Example.class, true, void.class, "pkg_s0");
+ testUnreflect(Example.class, true, void.class, "pri_s0");
+
+ testUnreflect(Example.class, true, Object.class, "s1", Object.class);
+ testUnreflect(Example.class, true, Object.class, "s2", int.class);
+ //testUnreflect(Example.class, true, Object.class, "s3", long.class);
+ //testUnreflect(Example.class, true, Object.class, "s4", int.class, int.class);
+ //testUnreflect(Example.class, true, Object.class, "s5", long.class, int.class);
+ //testUnreflect(Example.class, true, Object.class, "s6", int.class, long.class);
+
+ testUnreflect(Example.class, false, void.class, "v0");
+ testUnreflect(Example.class, false, void.class, "pkg_v0");
+ testUnreflect(Example.class, false, void.class, "pri_v0");
+ testUnreflect(Example.class, false, Object.class, "v1", Object.class);
+ testUnreflect(Example.class, false, Object.class, "v2", Object.class, Object.class);
+ testUnreflect(Example.class, false, Object.class, "v2", Object.class, int.class);
+ testUnreflect(Example.class, false, Object.class, "v2", int.class, Object.class);
+ testUnreflect(Example.class, false, Object.class, "v2", int.class, int.class);
+ }
+
+ void testUnreflect(Class<?> defc, boolean isStatic, Class<?> ret, String name, Class<?>... params) throws Throwable {
+ for (Object[] ac : accessCases(defc, name)) {
+ testUnreflect((Boolean)ac[0], (Lookup)ac[1], defc, isStatic, ret, name, params);
+ }
+ }
+ void testUnreflect(boolean positive, Lookup lookup, Class<?> defc, boolean isStatic, Class<?> ret, String name, Class<?>... params) throws Throwable {
+ countTest(positive);
+ MethodType type = MethodType.make(ret, params);
+ Method rmethod = null;
+ MethodHandle target = null;
+ RuntimeException noAccess = null;
+ try {
+ rmethod = defc.getDeclaredMethod(name, params);
+ } catch (NoSuchMethodException ex) {
+ throw new NoAccessException(ex);
+ }
+ assertEquals(isStatic, Modifier.isStatic(rmethod.getModifiers()));
+ try {
+ target = lookup.unreflect(rmethod);
+ } catch (NoAccessException ex) {
+ noAccess = ex;
+ }
+ if (verbosity >= 2)
+ System.out.println("unreflect "+defc+"."+name+"/"+type+" => "+target
+ +(noAccess == null ? "" : " !! "+noAccess));
+ if (positive && noAccess != null) throw noAccess;
+ assertEquals(positive ? "positive test" : "negative test erroneously passed", positive, target != null);
+ if (!positive) return; // negative test failed as expected
+ Class<?>[] paramsMaybeWithSelf = params;
+ if (!isStatic) {
+ paramsMaybeWithSelf = cat(array(Class[].class, (Class)defc), params);
+ }
+ MethodType typeMaybeWithSelf = MethodType.make(ret, paramsMaybeWithSelf);
+ MethodType ttype = target.type();
+ if (!isStatic)
+ ttype = ttype.changeParameterType(0, defc); // FIXME: test this
+ assertEquals(typeMaybeWithSelf, ttype);
+ Object[] argsMaybeWithSelf = randomArgs(paramsMaybeWithSelf);
+ printCalled(target, name, argsMaybeWithSelf);
+ MethodHandles.invoke(target, argsMaybeWithSelf);
+ assertCalled(name, argsMaybeWithSelf);
+ System.out.print(':');
+ }
+
+ @Test @Ignore("unimplemented")
+ public void testUnreflectSpecial() throws Throwable {
+ Lookup lookup = PRIVATE; // FIXME: test more lookups than this one
+ startTest("unreflectSpecial");
+ Method m = null;
+ MethodHandle expResult = null;
+ MethodHandle result = lookup.unreflectSpecial(m, Example.class);
+ assertEquals(expResult, result);
+ fail("The test case is a prototype.");
+ }
+
+ @Test @Ignore("unimplemented")
+ public void testUnreflectGetter() throws Throwable {
+ Lookup lookup = PRIVATE; // FIXME: test more lookups than this one
+ startTest("unreflectGetter");
+ Field f = null;
+ MethodHandle expResult = null;
+ MethodHandle result = lookup.unreflectGetter(f);
+ assertEquals(expResult, result);
+ fail("The test case is a prototype.");
+ }
+
+ @Test @Ignore("unimplemented")
+ public void testUnreflectSetter() throws Throwable {
+ Lookup lookup = PRIVATE; // FIXME: test more lookups than this one
+ startTest("unreflectSetter");
+ Field f = null;
+ MethodHandle expResult = null;
+ MethodHandle result = lookup.unreflectSetter(f);
+ assertEquals(expResult, result);
+ fail("The test case is a prototype.");
+ }
+
+ @Test @Ignore("unimplemented")
+ public void testArrayElementGetter() throws Throwable {
+ startTest("arrayElementGetter");
+ Class<?> arrayClass = null;
+ MethodHandle expResult = null;
+ MethodHandle result = MethodHandles.arrayElementGetter(arrayClass);
+ assertEquals(expResult, result);
+ fail("The test case is a prototype.");
+ }
+
+ @Test @Ignore("unimplemented")
+ public void testArrayElementSetter() throws Throwable {
+ startTest("arrayElementSetter");
+ Class<?> arrayClass = null;
+ MethodHandle expResult = null;
+ MethodHandle result = MethodHandles.arrayElementSetter(arrayClass);
+ assertEquals(expResult, result);
+ fail("The test case is a prototype.");
+ }
+
+ static class Callee {
+ static Object id() { return called("id"); }
+ static Object id(Object x) { return called("id", x); }
+ static Object id(Object x, Object y) { return called("id", x, y); }
+ static Object id(Object x, Object y, Object z) { return called("id", x, y, z); }
+ static Object id(Object... vx) { return called("id", vx); }
+ static MethodHandle ofType(int n) {
+ return ofType(Object.class, n);
+ }
+ static MethodHandle ofType(Class<?> rtype, int n) {
+ if (n == -1)
+ return ofType(MethodType.make(rtype, Object[].class));
+ return ofType(MethodType.makeGeneric(n).changeReturnType(rtype));
+ }
+ static MethodHandle ofType(Class<?> rtype, Class<?>... ptypes) {
+ return ofType(MethodType.make(rtype, ptypes));
+ }
+ static MethodHandle ofType(MethodType type) {
+ Class<?> rtype = type.returnType();
+ String pfx = "";
+ if (rtype != Object.class)
+ pfx = rtype.getSimpleName().substring(0, 1).toLowerCase();
+ String name = pfx+"id";
+ return PRIVATE.findStatic(Callee.class, name, type);
+ }
+ }
+
+ @Test
+ public void testConvertArguments() throws Throwable {
+ if (CAN_SKIP_WORKING) return;
+ startTest("convertArguments");
+ testConvert(Callee.ofType(1), null, "id", int.class);
+ testConvert(Callee.ofType(1), null, "id", String.class);
+ testConvert(Callee.ofType(1), null, "id", Integer.class);
+ testConvert(Callee.ofType(1), null, "id", short.class);
+ }
+
+ void testConvert(MethodHandle id, Class<?> rtype, String name, Class<?>... params) throws Throwable {
+ testConvert(true, id, rtype, name, params);
+ }
+
+ void testConvert(boolean positive, MethodHandle id, Class<?> rtype, String name, Class<?>... params) throws Throwable {
+ countTest(positive);
+ MethodType idType = id.type();
+ if (rtype == null) rtype = idType.returnType();
+ for (int i = 0; i < params.length; i++) {
+ if (params[i] == null) params[i] = idType.parameterType(i);
+ }
+ // simulate the pairwise conversion
+ MethodType newType = MethodType.make(rtype, params);
+ Object[] args = randomArgs(newType.parameterArray());
+ Object[] convArgs = args.clone();
+ for (int i = 0; i < args.length; i++) {
+ Class<?> src = newType.parameterType(i);
+ Class<?> dst = idType.parameterType(i);
+ if (src != dst)
+ convArgs[i] = castToWrapper(convArgs[i], dst);
+ }
+ Object convResult = MethodHandles.invoke(id, convArgs);
+ {
+ Class<?> dst = newType.returnType();
+ Class<?> src = idType.returnType();
+ if (src != dst)
+ convResult = castToWrapper(convResult, dst);
+ }
+ MethodHandle target = null;
+ RuntimeException error = null;
+ try {
+ target = MethodHandles.convertArguments(id, newType);
+ } catch (RuntimeException ex) {
+ error = ex;
+ }
+ if (verbosity >= 2)
+ System.out.println("convert "+id+ " to "+newType+" => "+target
+ +(error == null ? "" : " !! "+error));
+ if (positive && error != null) throw error;
+ assertEquals(positive ? "positive test" : "negative test erroneously passed", positive, target != null);
+ if (!positive) return; // negative test failed as expected
+ assertEquals(newType, target.type());
+ printCalled(target, id.toString(), args);
+ Object result = MethodHandles.invoke(target, args);
+ assertCalled(name, convArgs);
+ assertEquals(convResult, result);
+ System.out.print(':');
+ }
+
+ @Test
+ public void testInsertArguments() throws Throwable {
+ if (CAN_SKIP_WORKING) return;
+ startTest("insertArguments");
+ for (int nargs = 0; nargs <= 4; nargs++) {
+ for (int ins = 0; ins <= 4; ins++) {
+ if (ins > MAX_ARG_INCREASE) continue; // FIXME Fail_6
+ for (int pos = 0; pos <= nargs; pos++) {
+ testInsertArguments(nargs, pos, ins);
+ }
+ }
+ }
+ }
+
+ void testInsertArguments(int nargs, int pos, int ins) throws Throwable {
+ if (pos != 0 || ins != 1) return; // temp. restriction until MHs.insertArguments
+ countTest();
+ MethodHandle target = ValueConversions.varargsArray(nargs + ins);
+ Object[] args = randomArgs(target.type().parameterArray());
+ List<Object> resList = Arrays.asList(args);
+ List<Object> argsToPass = new ArrayList<Object>(resList);
+ List<Object> argsToInsert = argsToPass.subList(pos, pos + ins);
+ if (verbosity >= 2)
+ System.out.println("insert: "+argsToInsert+" into "+target);
+ MethodHandle target2 = MethodHandles.insertArgument(target, pos,
+ argsToInsert.get(0));
+ argsToInsert.clear(); // remove from argsToInsert
+ Object res2 = MethodHandles.invoke(target2, argsToPass.toArray());
+ Object res2List = Arrays.asList((Object[])res2);
+ if (verbosity >= 2)
+ System.out.println("result: "+res2List);
+ //if (!resList.equals(res2List))
+ // System.out.println("*** fail at n/p/i = "+nargs+"/"+pos+"/"+ins+": "+resList+" => "+res2List);
+ assertEquals(resList, res2List);
+ }
+
+ private static final String MISSING_ARG = "missingArg";
+ static Object targetIfEquals() {
+ return called("targetIfEquals");
+ }
+ static Object fallbackIfNotEquals() {
+ return called("fallbackIfNotEquals");
+ }
+ static Object targetIfEquals(Object x) {
+ assertEquals(x, MISSING_ARG);
+ return called("targetIfEquals", x);
+ }
+ static Object fallbackIfNotEquals(Object x) {
+ assertFalse(x.toString(), x.equals(MISSING_ARG));
+ return called("fallbackIfNotEquals", x);
+ }
+ static Object targetIfEquals(Object x, Object y) {
+ assertEquals(x, y);
+ return called("targetIfEquals", x, y);
+ }
+ static Object fallbackIfNotEquals(Object x, Object y) {
+ assertFalse(x.toString(), x.equals(y));
+ return called("fallbackIfNotEquals", x, y);
+ }
+ static Object targetIfEquals(Object x, Object y, Object z) {
+ assertEquals(x, y);
+ return called("targetIfEquals", x, y, z);
+ }
+ static Object fallbackIfNotEquals(Object x, Object y, Object z) {
+ assertFalse(x.toString(), x.equals(y));
+ return called("fallbackIfNotEquals", x, y, z);
+ }
+
+}
+// Local abbreviated copy of sun.dyn.util.ValueConversions
+class ValueConversions {
+ private static final Lookup IMPL_LOOKUP = MethodHandles.lookup();
+ private static final Object[] NO_ARGS_ARRAY = {};
+ private static Object[] makeArray(Object... args) { return args; }
+ private static Object[] array() { return NO_ARGS_ARRAY; }
+ private static Object[] array(Object a0)
+ { return makeArray(a0); }
+ private static Object[] array(Object a0, Object a1)
+ { return makeArray(a0, a1); }
+ private static Object[] array(Object a0, Object a1, Object a2)
+ { return makeArray(a0, a1, a2); }
+ private static Object[] array(Object a0, Object a1, Object a2, Object a3)
+ { return makeArray(a0, a1, a2, a3); }
+ private static Object[] array(Object a0, Object a1, Object a2, Object a3,
+ Object a4)
+ { return makeArray(a0, a1, a2, a3, a4); }
+ private static Object[] array(Object a0, Object a1, Object a2, Object a3,
+ Object a4, Object a5)
+ { return makeArray(a0, a1, a2, a3, a4, a5); }
+ private static Object[] array(Object a0, Object a1, Object a2, Object a3,
+ Object a4, Object a5, Object a6)
+ { return makeArray(a0, a1, a2, a3, a4, a5, a6); }
+ private static Object[] array(Object a0, Object a1, Object a2, Object a3,
+ Object a4, Object a5, Object a6, Object a7)
+ { return makeArray(a0, a1, a2, a3, a4, a5, a6, a7); }
+ private static Object[] array(Object a0, Object a1, Object a2, Object a3,
+ Object a4, Object a5, Object a6, Object a7,
+ Object a8)
+ { return makeArray(a0, a1, a2, a3, a4, a5, a6, a7, a8); }
+ private static Object[] array(Object a0, Object a1, Object a2, Object a3,
+ Object a4, Object a5, Object a6, Object a7,
+ Object a8, Object a9)
+ { return makeArray(a0, a1, a2, a3, a4, a5, a6, a7, a8, a9); }
+ static MethodHandle[] makeArrays() {
+ ArrayList<MethodHandle> arrays = new ArrayList<MethodHandle>();
+ MethodHandles.Lookup lookup = IMPL_LOOKUP;
+ for (;;) {
+ int nargs = arrays.size();
+ MethodType type = MethodType.makeGeneric(nargs).changeReturnType(Object[].class);
+ String name = "array";
+ MethodHandle array = null;
+ try {
+ array = lookup.findStatic(ValueConversions.class, name, type);
+ } catch (NoAccessException ex) {
+ }
+ if (array == null) break;
+ arrays.add(array);
+ }
+ assert(arrays.size() == 11); // current number of methods
+ return arrays.toArray(new MethodHandle[0]);
+ }
+ static final MethodHandle[] ARRAYS = makeArrays();
+
+ /** Return a method handle that takes the indicated number of Object
+ * arguments and returns an Object array of them, as if for varargs.
+ */
+ public static MethodHandle varargsArray(int nargs) {
+ if (nargs < ARRAYS.length)
+ return ARRAYS[nargs];
+ // else need to spin bytecode or do something else fancy
+ throw new UnsupportedOperationException("NYI");
+ }
+}
+// This guy tests access from outside the same package member, but inside
+// the package itself.
+class PackageSibling {
+ static Lookup lookup() {
+ return MethodHandles.lookup();
+ }
+}
+