| /* |
| * Copyright (c) 2009, 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. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.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 java.util.logging.Level; |
| import java.util.logging.Logger; |
| import org.junit.*; |
| import static org.junit.Assert.*; |
| |
| |
| /** |
| * |
| * @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; } |
| } |
| |
| // current failures |
| @Test @Ignore("failure in call to makeRawRetypeOnly in ToGeneric") |
| public void testFail_1() throws Throwable { |
| testSpreadArguments(int.class, 0, 6); |
| } |
| @Test @Ignore("failure in JVM when expanding the stack") |
| public void testFail_2() throws Throwable { |
| // if CONV_OP_IMPLEMENTED_MASK includes OP_SPREAD_ARGS, this crashes: |
| testSpreadArguments(Object.class, 0, 2); |
| } |
| @Test @Ignore("IllArgEx failure in call to ToGeneric.make") |
| public void testFail_3() throws Throwable { |
| testSpreadArguments(int.class, 1, 2); |
| } |
| @Test @Ignore("IllArgEx failure in call to ToGeneric.make") |
| public void testFail_4() throws Throwable { |
| testCollectArguments(int.class, 1, 2); |
| } |
| @Test @Ignore("cannot collect leading primitive types") |
| public void testFail_5() throws Throwable { |
| testInvokers(MethodType.genericMethodType(2).changeParameterType(0, int.class)); |
| } |
| @Test @Ignore("should not insert arguments beyond MethodHandlePushLimit") |
| public void testFail_6() throws Throwable { |
| testInsertArguments(0, 0, MAX_ARG_INCREASE+1); |
| } |
| static final int MAX_ARG_INCREASE = 3; |
| |
| public MethodHandlesTest() { |
| } |
| |
| 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); |
| if (dst == byte.class || dst == Byte.class) |
| return (byte)(value); |
| if (dst == boolean.class || dst == boolean.class) |
| return ((value % 29) & 1) == 0; |
| 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.methodType(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.publicLookup(); |
| |
| // 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 = { |
| { { false, PUBLIC }, { false, PACKAGE }, { false, PRIVATE } }, |
| { { false, PUBLIC }, { false, PACKAGE }, { true, PRIVATE } }, |
| { { false, PUBLIC }, { true, PACKAGE }, { true, PRIVATE } }, |
| { { true, PUBLIC }, { true, PACKAGE }, { true, PRIVATE } }, |
| }; |
| |
| static Object[][] accessCases(Class<?> defc, String name) { |
| if (name.contains("pri_")) { |
| return ACCESS_CASES[1]; // PRIVATE only |
| } else if (name.contains("pkg_")) { |
| return ACCESS_CASES[2]; // not PUBLIC |
| } else { |
| assertTrue(name.indexOf('_') < 0); |
| boolean pubc = Modifier.isPublic(defc.getModifiers()); |
| if (pubc) |
| return ACCESS_CASES[3]; // all access levels |
| return ACCESS_CASES[2]; // PACKAGE but not PUBLIC |
| } |
| } |
| |
| @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.methodType(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); |
| target.invokeVarargs(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.methodType(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.methodType(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); |
| target.invokeVarargs(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.methodType(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.methodType(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); |
| target.invokeVarargs(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.methodType(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); |
| target.invokeVarargs(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.methodType(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.methodType(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); |
| target.invokeVarargs(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."); |
| } |
| |
| public static class HasFields { |
| boolean fZ = false; |
| byte fB = (byte)'B'; |
| short fS = (short)'S'; |
| char fC = 'C'; |
| int fI = 'I'; |
| long fJ = 'J'; |
| float fF = 'F'; |
| double fD = 'D'; |
| static boolean sZ = true; |
| static byte sB = 1+(byte)'B'; |
| static short sS = 1+(short)'S'; |
| static char sC = 1+'C'; |
| static int sI = 1+'I'; |
| static long sJ = 1+'J'; |
| static float sF = 1+'F'; |
| static double sD = 1+'D'; |
| |
| Object fL = 'L'; |
| String fR = "R"; |
| static Object sL = 'M'; |
| static String sR = "S"; |
| |
| static final Object[][] CASES; |
| static { |
| ArrayList<Object[]> cases = new ArrayList<Object[]>(); |
| Object types[][] = { |
| {'L',Object.class}, {'R',String.class}, |
| {'I',int.class}, {'J',long.class}, |
| {'F',float.class}, {'D',double.class}, |
| {'Z',boolean.class}, {'B',byte.class}, |
| {'S',short.class}, {'C',char.class}, |
| }; |
| HasFields fields = new HasFields(); |
| for (Object[] t : types) { |
| for (int kind = 0; kind <= 1; kind++) { |
| boolean isStatic = (kind != 0); |
| char btc = (Character)t[0]; |
| String name = (isStatic ? "s" : "f") + btc; |
| Class<?> type = (Class<?>) t[1]; |
| Object value; |
| Field field; |
| try { |
| field = HasFields.class.getDeclaredField(name); |
| } catch (Exception ex) { |
| throw new InternalError("no field HasFields."+name); |
| } |
| try { |
| value = field.get(fields); |
| } catch (Exception ex) { |
| throw new InternalError("cannot fetch field HasFields."+name); |
| } |
| if (type == float.class) { |
| float v = 'F'; |
| if (isStatic) v++; |
| assert(value.equals(v)); |
| } |
| assert(name.equals(field.getName())); |
| assert(type.equals(field.getType())); |
| assert(isStatic == (Modifier.isStatic(field.getModifiers()))); |
| cases.add(new Object[]{ field, value }); |
| } |
| } |
| CASES = cases.toArray(new Object[0][]); |
| } |
| } |
| |
| @Test |
| public void testUnreflectGetter() throws Throwable { |
| Lookup lookup = PRIVATE; // FIXME: test more lookups than this one |
| startTest("unreflectGetter"); |
| for (Object[] c : HasFields.CASES) { |
| Field f = (Field)c[0]; |
| Object value = c[1]; |
| Class<?> type = f.getType(); |
| if (type.isPrimitive() && type != int.class) |
| continue; //FIXME |
| testUnreflectGetter(lookup, f, type, value); |
| } |
| } |
| public void testUnreflectGetter(MethodHandles.Lookup lookup, |
| Field f, Class<?> type, Object value) throws Throwable { |
| countTest(true); |
| boolean isStatic = Modifier.isStatic(f.getModifiers()); |
| MethodType expType = MethodType.methodType(type, HasFields.class); |
| if (isStatic) expType = expType.dropParameterTypes(0, 1); |
| MethodHandle mh = lookup.unreflectGetter(f); |
| assertSame(mh.type(), expType); |
| assertEquals(mh.toString(), f.getName()); |
| HasFields fields = new HasFields(); |
| Object sawValue; |
| Class<?> rtype = type; |
| if (type != int.class) rtype = Object.class; |
| mh = MethodHandles.convertArguments(mh, mh.type().generic().changeReturnType(rtype)); |
| Object expValue = value; |
| for (int i = 0; i <= 1; i++) { |
| if (isStatic) { |
| if (type == int.class) |
| sawValue = mh.<int>invoke(); // do these exactly |
| else |
| sawValue = mh.invoke(); |
| } else { |
| if (type == int.class) |
| sawValue = mh.<int>invoke((Object) fields); |
| else |
| sawValue = mh.invoke((Object) fields); |
| } |
| assertEquals(sawValue, expValue); |
| Object random = randomArg(type); |
| f.set(fields, random); |
| expValue = random; |
| } |
| f.set(fields, value); // put it back |
| } |
| |
| |
| @Test |
| public void testUnreflectSetter() throws Throwable { |
| Lookup lookup = PRIVATE; // FIXME: test more lookups than this one |
| startTest("unreflectSetter"); |
| for (Object[] c : HasFields.CASES) { |
| Field f = (Field)c[0]; |
| Object value = c[1]; |
| Class<?> type = f.getType(); |
| if (type.isPrimitive() && type != int.class) |
| continue; //FIXME |
| testUnreflectSetter(lookup, f, type, value); |
| } |
| } |
| public void testUnreflectSetter(MethodHandles.Lookup lookup, |
| Field f, Class<?> type, Object value) throws Throwable { |
| countTest(true); |
| boolean isStatic = Modifier.isStatic(f.getModifiers()); |
| MethodType expType = MethodType.methodType(void.class, HasFields.class, type); |
| if (isStatic) expType = expType.dropParameterTypes(0, 1); |
| MethodHandle mh = lookup.unreflectSetter(f); |
| assertSame(mh.type(), expType); |
| assertEquals(mh.toString(), f.getName()); |
| HasFields fields = new HasFields(); |
| Object sawValue; |
| Class<?> vtype = type; |
| if (type != int.class) vtype = Object.class; |
| int last = mh.type().parameterCount() - 1; |
| mh = MethodHandles.convertArguments(mh, mh.type().generic().changeReturnType(void.class).changeParameterType(last, vtype)); |
| assertEquals(f.get(fields), value); // clean to start with |
| for (int i = 0; i <= 1; i++) { |
| Object putValue = randomArg(type); |
| if (isStatic) { |
| if (type == int.class) |
| mh.<void>invoke((int)(Integer)putValue); // do these exactly |
| else |
| mh.<void>invoke(putValue); |
| } else { |
| if (type == int.class) |
| mh.<void>invoke((Object) fields, (int)(Integer)putValue); |
| else |
| mh.<void>invoke((Object) fields, putValue); |
| } |
| assertEquals(f.get(fields), putValue); |
| } |
| f.set(fields, value); // put it back |
| } |
| |
| @Test |
| public void testArrayElementGetter() throws Throwable { |
| startTest("arrayElementGetter"); |
| testArrayElementGetterSetter(new Object[10], false); |
| testArrayElementGetterSetter(new String[10], false); |
| testArrayElementGetterSetter(new int[10], false); |
| // FIXME: Do the other primitive types. |
| //testArrayElementGetterSetter(new float[10], false); |
| } |
| |
| @Test |
| public void testArrayElementSetter() throws Throwable { |
| startTest("arrayElementSetter"); |
| testArrayElementGetterSetter(new Object[10], true); |
| testArrayElementGetterSetter(new String[10], true); |
| testArrayElementGetterSetter(new int[10], true); |
| // FIXME: Do the other primitive types. |
| //testArrayElementGetterSetter(new float[10], true); |
| } |
| |
| public void testArrayElementGetterSetter(Object array, boolean testSetter) throws Throwable { |
| countTest(true); |
| Class<?> arrayType = array.getClass(); |
| Class<?> elemType = arrayType.getComponentType(); |
| MethodType expType = !testSetter |
| ? MethodType.methodType(elemType, arrayType, int.class) |
| : MethodType.methodType(void.class, arrayType, int.class, elemType); |
| MethodHandle mh = !testSetter |
| ? MethodHandles.arrayElementGetter(arrayType) |
| : MethodHandles.arrayElementSetter(arrayType); |
| assertSame(mh.type(), expType); |
| //assertEquals(mh.toString(), f.getName()); |
| Object sawValue, expValue; |
| List<Object> model = array2list(array); |
| int length = Array.getLength(array); |
| for (int i = 0; i < length; i++) { |
| // update array element |
| Object random = randomArg(elemType); |
| model.set(i, random); |
| if (testSetter) { |
| if (elemType == int.class) |
| mh.<void>invoke((int[]) array, i, (int)(Integer)random); |
| else |
| mh.invokeGeneric(array, i, random); |
| assertEquals(model, array2list(array)); |
| } else { |
| Array.set(array, i, random); |
| |
| } |
| // observe array element |
| sawValue = Array.get(array, i); |
| if (!testSetter) { |
| expValue = sawValue; |
| if (elemType == int.class) |
| sawValue = mh.<int>invoke((int[]) array, i); |
| else |
| sawValue = mh.invokeGeneric(array, i); |
| assertEquals(sawValue, expValue); |
| assertEquals(model, array2list(array)); |
| } |
| } |
| } |
| |
| List<Object> array2list(Object array) { |
| int length = Array.getLength(array); |
| ArrayList<Object> model = new ArrayList<Object>(length); |
| for (int i = 0; i < length; i++) |
| model.add(Array.get(array, i)); |
| return model; |
| } |
| |
| 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.methodType(rtype, Object[].class)); |
| return ofType(MethodType.genericMethodType(n).changeReturnType(rtype)); |
| } |
| static MethodHandle ofType(Class<?> rtype, Class<?>... ptypes) { |
| return ofType(MethodType.methodType(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.methodType(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 = id.invokeVarargs(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 = target.invokeVarargs(args); |
| assertCalled(name, convArgs); |
| assertEquals(convResult, result); |
| System.out.print(':'); |
| } |
| |
| @Test |
| public void testPermuteArguments() throws Throwable { |
| if (CAN_SKIP_WORKING) return; |
| startTest("permuteArguments"); |
| testPermuteArguments(4, Integer.class, 2, String.class, 0); |
| //testPermuteArguments(6, Integer.class, 0, null, 30); |
| //testPermuteArguments(4, Integer.class, 1, int.class, 6); |
| } |
| public void testPermuteArguments(int max, Class<?> type1, int t2c, Class<?> type2, int dilution) throws Throwable { |
| if (verbosity >= 1) |
| System.out.println("permuteArguments "+max+"*"+type1.getName() |
| +(t2c==0?"":"/"+t2c+"*"+type2.getName()) |
| +(dilution > 0 ? " with dilution "+dilution : "")); |
| int t2pos = t2c == 0 ? 0 : 1; |
| for (int inargs = t2pos+1; inargs <= max; inargs++) { |
| Class<?>[] types = new Class<?>[inargs]; |
| Arrays.fill(types, type1); |
| if (t2c != 0) { |
| // Fill in a middle range with type2: |
| Arrays.fill(types, t2pos, Math.min(t2pos+t2c, inargs), type2); |
| } |
| Object[] args = randomArgs(types); |
| int numcases = 1; |
| for (int outargs = 0; outargs <= max; outargs++) { |
| if (outargs - inargs >= MAX_ARG_INCREASE) continue; |
| int[] reorder = new int[outargs]; |
| int casStep = dilution + 1; |
| // Avoid some common factors: |
| while ((casStep > 2 && casStep % 2 == 0 && inargs % 2 == 0) || |
| (casStep > 3 && casStep % 3 == 0 && inargs % 3 == 0)) |
| casStep++; |
| for (int cas = 0; cas < numcases; cas += casStep) { |
| for (int i = 0, c = cas; i < outargs; i++) { |
| reorder[i] = c % inargs; |
| c /= inargs; |
| } |
| testPermuteArguments(args, types, reorder); |
| } |
| numcases *= inargs; |
| if (dilution > 10 && outargs >= 4) { |
| // Do some special patterns, which we probably missed. |
| // Replication of a single argument or argument pair. |
| for (int i = 0; i < inargs; i++) { |
| Arrays.fill(reorder, i); |
| testPermuteArguments(args, types, reorder); |
| for (int d = 1; d <= 2; d++) { |
| if (i + d >= inargs) continue; |
| for (int j = 1; j < outargs; j += 2) |
| reorder[j] += 1; |
| testPermuteArguments(args, types, reorder); |
| testPermuteArguments(args, types, reverse(reorder)); |
| } |
| } |
| // Repetition of a sequence of 3 or more arguments. |
| for (int i = 1; i < inargs; i++) { |
| for (int len = 3; len <= inargs; len++) { |
| for (int j = 0; j < outargs; j++) |
| reorder[j] = (i + (j % len)) % inargs; |
| testPermuteArguments(args, types, reorder); |
| testPermuteArguments(args, types, reverse(reorder)); |
| } |
| } |
| } |
| } |
| } |
| } |
| |
| static int[] reverse(int[] reorder) { |
| reorder = reorder.clone(); |
| for (int i = 0, imax = reorder.length / 2; i < imax; i++) { |
| int j = reorder.length - 1 - i; |
| int tem = reorder[i]; |
| reorder[i] = reorder[j]; |
| reorder[j] = tem; |
| } |
| return reorder; |
| } |
| |
| void testPermuteArguments(Object[] args, Class<?>[] types, int[] reorder) throws Throwable { |
| countTest(); |
| if (args == null && types == null) { |
| int max = 0; |
| for (int j : reorder) { |
| if (max < j) max = j; |
| } |
| args = randomArgs(max+1, Integer.class); |
| } |
| if (args == null) { |
| args = randomArgs(types); |
| } |
| if (types == null) { |
| types = new Class<?>[args.length]; |
| for (int i = 0; i < args.length; i++) |
| types[i] = args[i].getClass(); |
| } |
| int inargs = args.length, outargs = reorder.length; |
| assert(inargs == types.length); |
| if (verbosity >= 2) |
| System.out.println("permuteArguments "+Arrays.toString(reorder)); |
| Object[] permArgs = new Object[outargs]; |
| Class<?>[] permTypes = new Class<?>[outargs]; |
| for (int i = 0; i < outargs; i++) { |
| permArgs[i] = args[reorder[i]]; |
| permTypes[i] = types[reorder[i]]; |
| } |
| if (verbosity >= 3) { |
| System.out.println("in args: "+Arrays.asList(args)); |
| System.out.println("out args: "+Arrays.asList(permArgs)); |
| System.out.println("in types: "+Arrays.asList(types)); |
| System.out.println("out types: "+Arrays.asList(permTypes)); |
| } |
| MethodType inType = MethodType.methodType(Object.class, types); |
| MethodType outType = MethodType.methodType(Object.class, permTypes); |
| MethodHandle target = MethodHandles.convertArguments(ValueConversions.varargsList(outargs), outType); |
| MethodHandle newTarget = MethodHandles.permuteArguments(target, inType, reorder); |
| Object result = newTarget.invokeVarargs(args); |
| Object expected = Arrays.asList(permArgs); |
| assertEquals(expected, result); |
| } |
| |
| |
| @Test |
| public void testSpreadArguments() throws Throwable { |
| if (CAN_SKIP_WORKING) return; |
| startTest("spreadArguments"); |
| for (Class<?> argType : new Class[]{Object.class, Integer.class, int.class}) { |
| if (verbosity >= 2) |
| System.out.println("spreadArguments "+argType); |
| for (int nargs = 0; nargs < 10; nargs++) { |
| if (argType == int.class && nargs >= 6) continue; // FIXME Fail_1 |
| for (int pos = 0; pos < nargs; pos++) { |
| if (argType == int.class && pos > 0) continue; // FIXME Fail_3 |
| testSpreadArguments(argType, pos, nargs); |
| } |
| } |
| } |
| } |
| public void testSpreadArguments(Class<?> argType, int pos, int nargs) throws Throwable { |
| countTest(); |
| MethodHandle target = ValueConversions.varargsArray(nargs); |
| MethodHandle target2 = changeArgTypes(target, argType); |
| if (verbosity >= 2) |
| System.out.println("spread into "+target2+" ["+pos+".."+nargs+"]"); |
| Object[] args = randomArgs(target2.type().parameterArray()); |
| // make sure the target does what we think it does: |
| if (pos == 0 && nargs < 5) { |
| Object[] check = (Object[]) target.invokeVarargs(args); |
| assertArrayEquals(args, check); |
| switch (nargs) { |
| case 0: |
| check = target.<Object[]>invoke(); |
| assertArrayEquals(args, check); |
| break; |
| case 1: |
| check = target.<Object[]>invoke(args[0]); |
| assertArrayEquals(args, check); |
| break; |
| case 2: |
| check = target.<Object[]>invoke(args[0], args[1]); |
| assertArrayEquals(args, check); |
| break; |
| } |
| } |
| List<Class<?>> newParams = new ArrayList<Class<?>>(target2.type().parameterList()); |
| { // modify newParams in place |
| List<Class<?>> spreadParams = newParams.subList(pos, nargs); |
| spreadParams.clear(); spreadParams.add(Object[].class); |
| } |
| MethodType newType = MethodType.methodType(Object.class, newParams); |
| MethodHandle result = MethodHandles.spreadArguments(target2, newType); |
| Object[] returnValue; |
| if (pos == 0) { |
| returnValue = (Object[]) result.invoke(args); |
| } else { |
| Object[] args1 = Arrays.copyOfRange(args, 0, pos+1); |
| args1[pos] = Arrays.copyOfRange(args, pos, args.length); |
| returnValue = (Object[]) result.invokeVarargs(args1); |
| } |
| assertArrayEquals(args, returnValue); |
| } |
| |
| @Test |
| public void testCollectArguments() throws Throwable { |
| if (CAN_SKIP_WORKING) return; |
| startTest("collectArguments"); |
| for (Class<?> argType : new Class[]{Object.class, Integer.class, int.class}) { |
| if (verbosity >= 2) |
| System.out.println("collectArguments "+argType); |
| for (int nargs = 0; nargs < 10; nargs++) { |
| for (int pos = 0; pos < nargs; pos++) { |
| if (argType == int.class) continue; // FIXME Fail_4 |
| testCollectArguments(argType, pos, nargs); |
| } |
| } |
| } |
| } |
| public void testCollectArguments(Class<?> argType, int pos, int nargs) throws Throwable { |
| countTest(); |
| // fake up a MH with the same type as the desired adapter: |
| MethodHandle fake = ValueConversions.varargsArray(nargs); |
| fake = changeArgTypes(fake, argType); |
| MethodType newType = fake.type(); |
| Object[] args = randomArgs(newType.parameterArray()); |
| // here is what should happen: |
| Object[] collectedArgs = Arrays.copyOfRange(args, 0, pos+1); |
| collectedArgs[pos] = Arrays.copyOfRange(args, pos, args.length); |
| // here is the MH which will witness the collected argument tail: |
| MethodHandle target = ValueConversions.varargsArray(pos+1); |
| target = changeArgTypes(target, 0, pos, argType); |
| target = changeArgTypes(target, pos, pos+1, Object[].class); |
| if (verbosity >= 2) |
| System.out.println("collect from "+Arrays.asList(args)+" ["+pos+".."+nargs+"]"); |
| MethodHandle result = MethodHandles.collectArguments(target, newType); |
| Object[] returnValue = (Object[]) result.invokeVarargs(args); |
| // assertTrue(returnValue.length == pos+1 && returnValue[pos] instanceof Object[]); |
| // returnValue[pos] = Arrays.asList((Object[]) returnValue[pos]); |
| // collectedArgs[pos] = Arrays.asList((Object[]) collectedArgs[pos]); |
| assertArrayEquals(collectedArgs, returnValue); |
| } |
| |
| @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 { |
| 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.insertArguments(target, pos, |
| (Object[]) argsToInsert.toArray()); |
| argsToInsert.clear(); // remove from argsToInsert |
| Object res2 = target2.invokeVarargs(argsToPass); |
| 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); |
| } |
| |
| @Test |
| public void testFilterArguments() throws Throwable { |
| if (CAN_SKIP_WORKING) return; |
| startTest("filterArguments"); |
| for (int nargs = 1; nargs <= 6; nargs++) { |
| for (int pos = 0; pos < nargs; pos++) { |
| testFilterArguments(nargs, pos); |
| } |
| } |
| } |
| |
| void testFilterArguments(int nargs, int pos) throws Throwable { |
| countTest(); |
| MethodHandle target = ValueConversions.varargsList(nargs); |
| MethodHandle filter = ValueConversions.varargsList(1); |
| filter = MethodHandles.convertArguments(filter, filter.type().generic()); |
| Object[] argsToPass = randomArgs(nargs, Object.class); |
| if (verbosity >= 2) |
| System.out.println("filter "+target+" at "+pos+" with "+filter); |
| MethodHandle[] filters = new MethodHandle[pos*2+1]; |
| filters[pos] = filter; |
| MethodHandle target2 = MethodHandles.filterArguments(target, filters); |
| // Simulate expected effect of filter on arglist: |
| Object[] filteredArgs = argsToPass.clone(); |
| filteredArgs[pos] = filter.invoke(filteredArgs[pos]); |
| List<Object> expected = Arrays.asList(filteredArgs); |
| Object result = target2.invokeVarargs(argsToPass); |
| if (verbosity >= 2) |
| System.out.println("result: "+result); |
| if (!expected.equals(result)) |
| System.out.println("*** fail at n/p = "+nargs+"/"+pos+": "+argsToPass+" => "+result); |
| assertEquals(expected, result); |
| } |
| |
| @Test |
| public void testFoldArguments() throws Throwable { |
| if (CAN_SKIP_WORKING) return; |
| startTest("foldArguments"); |
| for (int nargs = 0; nargs <= 4; nargs++) { |
| for (int fold = 0; fold <= nargs; fold++) { |
| for (int pos = 0; pos <= nargs; pos++) { |
| testFoldArguments(nargs, pos, fold); |
| } |
| } |
| } |
| } |
| |
| void testFoldArguments(int nargs, int pos, int fold) throws Throwable { |
| if (pos != 0) return; // can fold only at pos=0 for now |
| countTest(); |
| MethodHandle target = ValueConversions.varargsList(1 + nargs); |
| MethodHandle combine = ValueConversions.varargsList(fold); |
| List<Object> argsToPass = Arrays.asList(randomArgs(nargs, Object.class)); |
| if (verbosity >= 2) |
| System.out.println("fold "+target+" with "+combine); |
| MethodHandle target2 = MethodHandles.foldArguments(target, combine); |
| // Simulate expected effect of combiner on arglist: |
| List<Object> expected = new ArrayList<Object>(argsToPass); |
| List<Object> argsToFold = expected.subList(pos, pos + fold); |
| if (verbosity >= 2) |
| System.out.println("fold: "+argsToFold+" into "+target2); |
| Object foldedArgs = combine.invokeVarargs(argsToFold); |
| argsToFold.add(0, foldedArgs); |
| Object result = target2.invokeVarargs(argsToPass); |
| if (verbosity >= 2) |
| System.out.println("result: "+result); |
| if (!expected.equals(result)) |
| System.out.println("*** fail at n/p/f = "+nargs+"/"+pos+"/"+fold+": "+argsToPass+" => "+result); |
| assertEquals(expected, result); |
| } |
| |
| @Test |
| public void testDropArguments() throws Throwable { |
| if (CAN_SKIP_WORKING) return; |
| startTest("dropArguments"); |
| for (int nargs = 0; nargs <= 4; nargs++) { |
| for (int drop = 1; drop <= 4; drop++) { |
| for (int pos = 0; pos <= nargs; pos++) { |
| testDropArguments(nargs, pos, drop); |
| } |
| } |
| } |
| } |
| |
| void testDropArguments(int nargs, int pos, int drop) throws Throwable { |
| countTest(); |
| MethodHandle target = ValueConversions.varargsArray(nargs); |
| Object[] args = randomArgs(target.type().parameterArray()); |
| MethodHandle target2 = MethodHandles.dropArguments(target, pos, |
| Collections.nCopies(drop, Object.class).toArray(new Class[0])); |
| List<Object> resList = Arrays.asList(args); |
| List<Object> argsToDrop = new ArrayList<Object>(resList); |
| for (int i = drop; i > 0; i--) { |
| argsToDrop.add(pos, "blort#"+i); |
| } |
| Object res2 = target2.invokeVarargs(argsToDrop); |
| Object res2List = Arrays.asList((Object[])res2); |
| //if (!resList.equals(res2List)) |
| // System.out.println("*** fail at n/p/d = "+nargs+"/"+pos+"/"+drop+": "+argsToDrop+" => "+res2List); |
| assertEquals(resList, res2List); |
| } |
| |
| @Test |
| public void testInvokers() throws Throwable { |
| if (CAN_SKIP_WORKING) return; |
| startTest("exactInvoker, genericInvoker, varargsInvoker, dynamicInvoker"); |
| // exactInvoker, genericInvoker, varargsInvoker[0..N], dynamicInvoker |
| Set<MethodType> done = new HashSet<MethodType>(); |
| for (int i = 0; i <= 6; i++) { |
| MethodType gtype = MethodType.genericMethodType(i); |
| for (Class<?> argType : new Class[]{Object.class, Integer.class, int.class}) { |
| for (int j = -1; j < i; j++) { |
| MethodType type = gtype; |
| if (j < 0) |
| type = type.changeReturnType(argType); |
| else if (argType == void.class) |
| continue; |
| else |
| type = type.changeParameterType(j, argType); |
| if (argType.isPrimitive() && j != i-1) continue; // FIXME Fail_5 |
| if (done.add(type)) |
| testInvokers(type); |
| MethodType vtype = type.changeReturnType(void.class); |
| if (done.add(vtype)) |
| testInvokers(vtype); |
| } |
| } |
| } |
| } |
| |
| public void testInvokers(MethodType type) throws Throwable { |
| if (verbosity >= 2) |
| System.out.println("test invokers for "+type); |
| int nargs = type.parameterCount(); |
| boolean testRetCode = type.returnType() != void.class; |
| MethodHandle target = PRIVATE.findStatic(MethodHandlesTest.class, "invokee", |
| MethodType.genericMethodType(0, true)); |
| target = MethodHandles.collectArguments(target, type); |
| Object[] args = randomArgs(type.parameterArray()); |
| List<Object> targetPlusArgs = new ArrayList<Object>(Arrays.asList(args)); |
| targetPlusArgs.add(0, target); |
| int code = (Integer) invokee(args); |
| Object log = logEntry("invokee", args); |
| assertEquals(log.hashCode(), code); |
| assertCalled("invokee", args); |
| MethodHandle inv; |
| Object result; |
| // exact invoker |
| countTest(); |
| calledLog.clear(); |
| inv = MethodHandles.exactInvoker(type); |
| result = inv.invokeVarargs(targetPlusArgs); |
| if (testRetCode) assertEquals(code, result); |
| assertCalled("invokee", args); |
| // generic invoker |
| countTest(); |
| inv = MethodHandles.genericInvoker(type); |
| if (nargs <= 3) { |
| calledLog.clear(); |
| switch (nargs) { |
| case 0: |
| result = inv.invoke(target); |
| break; |
| case 1: |
| result = inv.invoke(target, args[0]); |
| break; |
| case 2: |
| result = inv.invoke(target, args[0], args[1]); |
| break; |
| case 3: |
| result = inv.invoke(target, args[0], args[1], args[2]); |
| break; |
| } |
| if (testRetCode) assertEquals(code, result); |
| assertCalled("invokee", args); |
| } |
| calledLog.clear(); |
| result = inv.invokeVarargs(targetPlusArgs); |
| if (testRetCode) assertEquals(code, result); |
| assertCalled("invokee", args); |
| // varargs invoker #0 |
| calledLog.clear(); |
| inv = MethodHandles.varargsInvoker(type, 0); |
| result = inv.invoke(target, args); |
| if (testRetCode) assertEquals(code, result); |
| assertCalled("invokee", args); |
| if (nargs >= 1) { |
| // varargs invoker #1 |
| calledLog.clear(); |
| inv = MethodHandles.varargsInvoker(type, 1); |
| result = inv.invoke(target, args[0], Arrays.copyOfRange(args, 1, nargs)); |
| if (testRetCode) assertEquals(code, result); |
| assertCalled("invokee", args); |
| } |
| if (nargs >= 2) { |
| // varargs invoker #2 |
| calledLog.clear(); |
| inv = MethodHandles.varargsInvoker(type, 2); |
| result = inv.invoke(target, args[0], args[1], Arrays.copyOfRange(args, 2, nargs)); |
| if (testRetCode) assertEquals(code, result); |
| assertCalled("invokee", args); |
| } |
| if (nargs >= 3) { |
| // varargs invoker #3 |
| calledLog.clear(); |
| inv = MethodHandles.varargsInvoker(type, 3); |
| result = inv.invoke(target, args[0], args[1], args[2], Arrays.copyOfRange(args, 3, nargs)); |
| if (testRetCode) assertEquals(code, result); |
| assertCalled("invokee", args); |
| } |
| for (int k = 0; k <= nargs; k++) { |
| // varargs invoker #0..N |
| countTest(); |
| calledLog.clear(); |
| inv = MethodHandles.varargsInvoker(type, k); |
| List<Object> targetPlusVarArgs = new ArrayList<Object>(targetPlusArgs); |
| List<Object> tailList = targetPlusVarArgs.subList(1+k, 1+nargs); |
| Object[] tail = tailList.toArray(); |
| tailList.clear(); tailList.add(tail); |
| result = inv.invokeVarargs(targetPlusVarArgs); |
| if (testRetCode) assertEquals(code, result); |
| assertCalled("invokee", args); |
| } |
| // dynamic invoker |
| countTest(); |
| CallSite site = new CallSite(MethodHandlesTest.class, "foo", type); |
| inv = MethodHandles.dynamicInvoker(site); |
| site.setTarget(target); |
| calledLog.clear(); |
| result = inv.invokeVarargs(args); |
| if (testRetCode) assertEquals(code, result); |
| assertCalled("invokee", args); |
| } |
| |
| static Object invokee(Object... args) { |
| return called("invokee", args).hashCode(); |
| } |
| |
| 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); |
| } |
| |
| @Test |
| public void testGuardWithTest() throws Throwable { |
| if (CAN_SKIP_WORKING) return; |
| startTest("guardWithTest"); |
| for (int nargs = 0; nargs <= 3; nargs++) { |
| if (nargs != 2) continue; // FIXME: test more later |
| testGuardWithTest(nargs, Object.class); |
| testGuardWithTest(nargs, String.class); |
| } |
| } |
| void testGuardWithTest(int nargs, Class<?> argClass) throws Throwable { |
| countTest(); |
| MethodHandle test = PRIVATE.findVirtual(Object.class, "equals", MethodType.methodType(boolean.class, Object.class)); |
| MethodHandle target = PRIVATE.findStatic(MethodHandlesTest.class, "targetIfEquals", MethodType.genericMethodType(nargs)); |
| MethodHandle fallback = PRIVATE.findStatic(MethodHandlesTest.class, "fallbackIfNotEquals", MethodType.genericMethodType(nargs)); |
| while (test.type().parameterCount() < nargs) |
| test = MethodHandles.dropArguments(test, test.type().parameterCount()-1, Object.class); |
| while (test.type().parameterCount() > nargs) |
| test = MethodHandles.insertArguments(test, 0, MISSING_ARG); |
| if (argClass != Object.class) { |
| test = changeArgTypes(test, argClass); |
| target = changeArgTypes(target, argClass); |
| fallback = changeArgTypes(fallback, argClass); |
| } |
| MethodHandle mh = MethodHandles.guardWithTest(test, target, fallback); |
| assertEquals(target.type(), mh.type()); |
| Object[][] argLists = { |
| { }, |
| { "foo" }, { MISSING_ARG }, |
| { "foo", "foo" }, { "foo", "bar" }, |
| { "foo", "foo", "baz" }, { "foo", "bar", "baz" } |
| }; |
| for (Object[] argList : argLists) { |
| if (argList.length != nargs) continue; |
| boolean equals; |
| switch (nargs) { |
| case 0: equals = true; break; |
| case 1: equals = MISSING_ARG.equals(argList[0]); break; |
| default: equals = argList[0].equals(argList[1]); break; |
| } |
| String willCall = (equals ? "targetIfEquals" : "fallbackIfNotEquals"); |
| if (verbosity >= 2) |
| System.out.println(logEntry(willCall, argList)); |
| Object result = mh.invokeVarargs(argList); |
| assertCalled(willCall, argList); |
| } |
| } |
| |
| @Test |
| public void testCatchException() throws Throwable { |
| if (CAN_SKIP_WORKING) return; |
| startTest("catchException"); |
| for (int nargs = 2; nargs <= 6; nargs++) { |
| for (int ti = 0; ti <= 1; ti++) { |
| boolean throwIt = (ti != 0); |
| testCatchException(int.class, new ClassCastException("testing"), throwIt, nargs); |
| testCatchException(void.class, new java.io.IOException("testing"), throwIt, nargs); |
| testCatchException(String.class, new LinkageError("testing"), throwIt, nargs); |
| } |
| } |
| } |
| |
| private static <T extends Throwable> |
| Object throwOrReturn(Object normal, T exception) throws T { |
| if (exception != null) throw exception; |
| return normal; |
| } |
| |
| void testCatchException(Class<?> returnType, Throwable thrown, boolean throwIt, int nargs) throws Throwable { |
| countTest(); |
| if (verbosity >= 2) |
| System.out.println("catchException rt="+returnType+" throw="+throwIt+" nargs="+nargs); |
| Class<? extends Throwable> exType = thrown.getClass(); |
| MethodHandle throwOrReturn |
| = PRIVATE.findStatic(MethodHandlesTest.class, "throwOrReturn", |
| MethodType.methodType(Object.class, Object.class, Throwable.class)); |
| MethodHandle thrower = throwOrReturn; |
| while (thrower.type().parameterCount() < nargs) |
| thrower = MethodHandles.dropArguments(thrower, thrower.type().parameterCount(), Object.class); |
| MethodHandle target = MethodHandles.catchException(thrower, |
| thrown.getClass(), ValueConversions.varargsList(1+nargs)); |
| assertEquals(thrower.type(), target.type()); |
| //System.out.println("catching with "+target+" : "+throwOrReturn); |
| Object[] args = randomArgs(nargs, Object.class); |
| args[1] = (throwIt ? thrown : null); |
| Object returned = target.invokeVarargs(args); |
| //System.out.println("return from "+target+" : "+returned); |
| if (!throwIt) { |
| assertSame(args[0], returned); |
| } else { |
| List<Object> catchArgs = new ArrayList<Object>(Arrays.asList(args)); |
| catchArgs.add(0, thrown); |
| assertEquals(catchArgs, returned); |
| } |
| } |
| |
| @Test |
| public void testThrowException() throws Throwable { |
| if (CAN_SKIP_WORKING) return; |
| startTest("throwException"); |
| testThrowException(int.class, new ClassCastException("testing")); |
| testThrowException(void.class, new java.io.IOException("testing")); |
| testThrowException(String.class, new LinkageError("testing")); |
| } |
| |
| void testThrowException(Class<?> returnType, Throwable thrown) throws Throwable { |
| countTest(); |
| Class<? extends Throwable> exType = thrown.getClass(); |
| MethodHandle target = MethodHandles.throwException(returnType, exType); |
| //System.out.println("throwing with "+target+" : "+thrown); |
| MethodType expectedType = MethodType.methodType(returnType, exType); |
| assertEquals(expectedType, target.type()); |
| Throwable caught = null; |
| try { |
| Object res = target.invokeGeneric(thrown); |
| fail("got "+res+" instead of throwing "+thrown); |
| } catch (Throwable ex) { |
| if (ex != thrown) { |
| if (ex instanceof Error) throw (Error)ex; |
| if (ex instanceof RuntimeException) throw (RuntimeException)ex; |
| } |
| caught = ex; |
| } |
| assertSame(thrown, caught); |
| } |
| |
| @Test |
| public void testCastFailure() throws Throwable { |
| if (CAN_SKIP_WORKING) return; |
| startTest("testCastFailure"); |
| testCastFailure("cast/argument", 11000); |
| testCastFailure("unbox/argument", 11000); |
| testCastFailure("cast/return", 11000); |
| testCastFailure("unbox/return", 11000); |
| } |
| |
| static class Surprise extends JavaMethodHandle { |
| Surprise() { super("value"); } |
| Object value(Object x) { |
| trace("value", x); |
| if (boo != null) return boo; |
| return x; |
| } |
| Object boo; |
| void boo(Object x) { boo = x; } |
| |
| static void trace(String x, Object y) { |
| if (verbosity > 8) System.out.println(x+"="+y); |
| } |
| static Object refIdentity(Object x) { trace("ref.x", x); return x; } |
| static Integer boxIdentity(Integer x) { trace("box.x", x); return x; } |
| static int intIdentity(int x) { trace("int.x", x); return x; } |
| static MethodHandle REF_IDENTITY = PRIVATE.findStatic( |
| Surprise.class, "refIdentity", |
| MethodType.methodType(Object.class, Object.class)); |
| static MethodHandle BOX_IDENTITY = PRIVATE.findStatic( |
| Surprise.class, "boxIdentity", |
| MethodType.methodType(Integer.class, Integer.class)); |
| static MethodHandle INT_IDENTITY = PRIVATE.findStatic( |
| Surprise.class, "intIdentity", |
| MethodType.methodType(int.class, int.class)); |
| } |
| |
| void testCastFailure(String mode, int okCount) throws Throwable { |
| countTest(false); |
| if (verbosity > 1) System.out.println("mode="+mode); |
| Surprise boo = new Surprise(); |
| MethodHandle identity = Surprise.REF_IDENTITY, surprise = boo; |
| if (mode.endsWith("/return")) { |
| if (mode.equals("unbox/return")) { |
| // fail on return to ((Integer)surprise).intValue |
| surprise = MethodHandles.convertArguments(surprise, MethodType.methodType(int.class, Object.class)); |
| identity = MethodHandles.convertArguments(identity, MethodType.methodType(int.class, Object.class)); |
| } else if (mode.equals("cast/return")) { |
| // fail on return to (Integer)surprise |
| surprise = MethodHandles.convertArguments(surprise, MethodType.methodType(Integer.class, Object.class)); |
| identity = MethodHandles.convertArguments(identity, MethodType.methodType(Integer.class, Object.class)); |
| } |
| } else if (mode.endsWith("/argument")) { |
| MethodHandle callee = null; |
| if (mode.equals("unbox/argument")) { |
| // fail on handing surprise to int argument |
| callee = Surprise.INT_IDENTITY; |
| } else if (mode.equals("cast/argument")) { |
| // fail on handing surprise to Integer argument |
| callee = Surprise.BOX_IDENTITY; |
| } |
| if (callee != null) { |
| callee = MethodHandles.convertArguments(callee, MethodType.genericMethodType(1)); |
| surprise = MethodHandles.filterArguments(callee, surprise); |
| identity = MethodHandles.filterArguments(callee, identity); |
| } |
| } |
| assertNotSame(mode, surprise, boo); |
| identity = MethodHandles.convertArguments(identity, MethodType.genericMethodType(1)); |
| surprise = MethodHandles.convertArguments(surprise, MethodType.genericMethodType(1)); |
| Object x = 42; |
| for (int i = 0; i < okCount; i++) { |
| Object y = identity.invoke(x); |
| assertEquals(x, y); |
| Object z = surprise.invoke(x); |
| assertEquals(x, z); |
| } |
| boo.boo("Boo!"); |
| Object y = identity.invoke(x); |
| assertEquals(x, y); |
| try { |
| Object z = surprise.invoke(x); |
| System.out.println("Failed to throw; got z="+z); |
| assertTrue(false); |
| } catch (Exception ex) { |
| if (verbosity > 1) |
| System.out.println("caught "+ex); |
| if (verbosity > 2) |
| ex.printStackTrace(); |
| assertTrue(ex instanceof ClassCastException |
| // FIXME: accept only one of the two for any given unit test |
| || ex instanceof WrongMethodTypeException |
| ); |
| } |
| } |
| |
| } |
| // 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.genericMethodType(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"); |
| } |
| |
| private static final List<Object> NO_ARGS_LIST = Arrays.asList(NO_ARGS_ARRAY); |
| private static List<Object> makeList(Object... args) { return Arrays.asList(args); } |
| private static List<Object> list() { return NO_ARGS_LIST; } |
| private static List<Object> list(Object a0) |
| { return makeList(a0); } |
| private static List<Object> list(Object a0, Object a1) |
| { return makeList(a0, a1); } |
| private static List<Object> list(Object a0, Object a1, Object a2) |
| { return makeList(a0, a1, a2); } |
| private static List<Object> list(Object a0, Object a1, Object a2, Object a3) |
| { return makeList(a0, a1, a2, a3); } |
| private static List<Object> list(Object a0, Object a1, Object a2, Object a3, |
| Object a4) |
| { return makeList(a0, a1, a2, a3, a4); } |
| private static List<Object> list(Object a0, Object a1, Object a2, Object a3, |
| Object a4, Object a5) |
| { return makeList(a0, a1, a2, a3, a4, a5); } |
| private static List<Object> list(Object a0, Object a1, Object a2, Object a3, |
| Object a4, Object a5, Object a6) |
| { return makeList(a0, a1, a2, a3, a4, a5, a6); } |
| private static List<Object> list(Object a0, Object a1, Object a2, Object a3, |
| Object a4, Object a5, Object a6, Object a7) |
| { return makeList(a0, a1, a2, a3, a4, a5, a6, a7); } |
| private static List<Object> list(Object a0, Object a1, Object a2, Object a3, |
| Object a4, Object a5, Object a6, Object a7, |
| Object a8) |
| { return makeList(a0, a1, a2, a3, a4, a5, a6, a7, a8); } |
| private static List<Object> list(Object a0, Object a1, Object a2, Object a3, |
| Object a4, Object a5, Object a6, Object a7, |
| Object a8, Object a9) |
| { return makeList(a0, a1, a2, a3, a4, a5, a6, a7, a8, a9); } |
| static MethodHandle[] makeLists() { |
| ArrayList<MethodHandle> arrays = new ArrayList<MethodHandle>(); |
| MethodHandles.Lookup lookup = IMPL_LOOKUP; |
| for (;;) { |
| int nargs = arrays.size(); |
| MethodType type = MethodType.genericMethodType(nargs).changeReturnType(List.class); |
| String name = "list"; |
| 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[] LISTS = makeLists(); |
| |
| /** Return a method handle that takes the indicated number of Object |
| * arguments and returns List. |
| */ |
| public static MethodHandle varargsList(int nargs) { |
| if (nargs < LISTS.length) |
| return LISTS[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(); |
| } |
| } |