--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/test/java/lang/invoke/VarargsArrayTest.java Wed Sep 10 19:19:47 2014 +0400
@@ -0,0 +1,224 @@
+/*
+ * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package java.lang.invoke;
+
+import sun.invoke.util.Wrapper;
+
+import java.util.Arrays;
+import java.util.Collections;
+
+/* @test
+ * @summary unit tests for varargs array methods: MethodHandleInfo.varargsArray(int),
+ * MethodHandleInfo.varargsArray(Class,int) & MethodHandleInfo.varargsList(int)
+ *
+ * @run main/bootclasspath java.lang.invoke.VarargsArrayTest
+ * @run main/bootclasspath -DVarargsArrayTest.MAX_ARITY=255 -DVarargsArrayTest.START_ARITY=250
+ * java.lang.invoke.VarargsArrayTest
+ */
+
+/* This might take a while and burn lots of metadata:
+ * @run main/bootclasspath -DVarargsArrayTest.MAX_ARITY=255 -DVarargsArrayTest.EXHAUSTIVE=true java.lang.invoke.VarargsArrayTest
+ */
+public class VarargsArrayTest {
+ private static final Class<?> CLASS = VarargsArrayTest.class;
+ private static final int MAX_ARITY = Integer.getInteger(CLASS.getSimpleName()+".MAX_ARITY", 40);
+ private static final int START_ARITY = Integer.getInteger(CLASS.getSimpleName()+".START_ARITY", 0);
+ private static final boolean EXHAUSTIVE = Boolean.getBoolean(CLASS.getSimpleName()+".EXHAUSTIVE");
+
+ public static void main(String[] args) throws Throwable {
+ testVarargsArray();
+ testVarargsReferenceArray();
+ testVarargsPrimitiveArray();
+ }
+
+ public static void testVarargsArray() throws Throwable {
+ final int MIN = START_ARITY;
+ final int MAX = MAX_ARITY-2; // 253+1 would cause parameter overflow with 'this' added
+ for (int nargs = MIN; nargs <= MAX; nargs = nextArgCount(nargs, 17, MAX)) {
+ MethodHandle target = MethodHandleImpl.varargsArray(nargs);
+ Object[] args = new Object[nargs];
+ for (int i = 0; i < nargs; i++)
+ args[i] = "#"+i;
+ Object res = target.invokeWithArguments(args);
+ assertArrayEquals(args, (Object[])res);
+ }
+ }
+
+ public static void testVarargsReferenceArray() throws Throwable {
+ testTypedVarargsArray(Object[].class);
+ testTypedVarargsArray(String[].class);
+ testTypedVarargsArray(Number[].class);
+ }
+
+ public static void testVarargsPrimitiveArray() throws Throwable {
+ testTypedVarargsArray(int[].class);
+ testTypedVarargsArray(long[].class);
+ testTypedVarargsArray(byte[].class);
+ testTypedVarargsArray(boolean[].class);
+ testTypedVarargsArray(short[].class);
+ testTypedVarargsArray(char[].class);
+ testTypedVarargsArray(float[].class);
+ testTypedVarargsArray(double[].class);
+ }
+
+ private static int nextArgCount(int nargs, int density, int MAX) {
+ if (EXHAUSTIVE) return nargs + 1;
+ if (nargs >= MAX) return Integer.MAX_VALUE;
+ int BOT = 20, TOP = MAX-5;
+ if (density < 10) { BOT = 10; MAX = TOP-2; }
+ if (nargs <= BOT || nargs >= TOP) {
+ ++nargs;
+ } else {
+ int bump = Math.max(1, 100 / density);
+ nargs += bump;
+ if (nargs > TOP) nargs = TOP;
+ }
+ return nargs;
+ }
+
+ private static void testTypedVarargsArray(Class<?> arrayType) throws Throwable {
+ Class<?> elemType = arrayType.getComponentType();
+ int MIN = START_ARITY;
+ int MAX = MAX_ARITY-2; // 253+1 would cause parameter overflow with 'this' added
+ int density = 3;
+ if (elemType == int.class || elemType == long.class) density = 7;
+ if (elemType == long.class || elemType == double.class) { MAX /= 2; MIN /= 2; }
+ for (int nargs = MIN; nargs <= MAX; nargs = nextArgCount(nargs, density, MAX)) {
+ Object[] args = makeTestArray(elemType, nargs);
+ MethodHandle varargsArray = MethodHandleImpl.varargsArray(arrayType, nargs);
+ MethodType vaType = varargsArray.type();
+ assertEquals(arrayType, vaType.returnType());
+ if (nargs != 0) {
+ assertEquals(elemType, vaType.parameterType(0));
+ assertEquals(elemType, vaType.parameterType(vaType.parameterCount()-1));
+ }
+ assertEquals(MethodType.methodType(arrayType, Collections.<Class<?>>nCopies(nargs, elemType)),
+ vaType);
+ Object res = varargsArray.invokeWithArguments(args);
+ assertEquals(res.getClass(), arrayType);
+ String resString = toArrayString(res);
+ assertEquals(Arrays.toString(args), resString);
+
+ MethodHandle spreader = varargsArray.asSpreader(arrayType, nargs);
+ MethodType stype = spreader.type();
+ assert(stype == MethodType.methodType(arrayType, arrayType));
+ if (nargs <= 5) {
+ // invoke target as a spreader also:
+ @SuppressWarnings("cast")
+ Object res2 = spreader.invokeWithArguments((Object)res);
+ String res2String = toArrayString(res2);
+ assertEquals(Arrays.toString(args), res2String);
+ // invoke the spreader on a generic Object[] array; check for error
+ try {
+ Object res3 = spreader.invokeWithArguments((Object)args);
+ String res3String = toArrayString(res3);
+ assertTrue(arrayType.getName(), arrayType.isAssignableFrom(Object[].class));
+ assertEquals(Arrays.toString(args), res3String);
+ } catch (ClassCastException ex) {
+ assertFalse(arrayType.getName(), arrayType.isAssignableFrom(Object[].class));
+ }
+ }
+ if (nargs == 0) {
+ // invoke spreader on null arglist
+ Object res3 = spreader.invokeWithArguments((Object)null);
+ String res3String = toArrayString(res3);
+ assertEquals(Arrays.toString(args), res3String);
+ }
+ }
+ }
+
+ private static Object[] makeTestArray(Class<?> elemType, int len) {
+ Wrapper elem = null;
+ if (elemType.isPrimitive())
+ elem = Wrapper.forPrimitiveType(elemType);
+ else if (Wrapper.isWrapperType(elemType))
+ elem = Wrapper.forWrapperType(elemType);
+ Object[] args = new Object[len];
+ for (int i = 0; i < len; i++) {
+ Object arg = i * 100;
+ if (elem == null) {
+ if (elemType == String.class)
+ arg = "#"+arg;
+ arg = elemType.cast(arg); // just to make sure
+ } else {
+ switch (elem) {
+ case BOOLEAN: arg = (i % 3 == 0); break;
+ case CHAR: arg = 'a' + i; break;
+ case LONG: arg = (long)i * 1000_000_000; break;
+ case FLOAT: arg = (float)i / 100; break;
+ case DOUBLE: arg = (double)i / 1000_000; break;
+ }
+ arg = elem.cast(arg, elemType);
+ }
+ args[i] = arg;
+ }
+ return args;
+ }
+
+ private static String toArrayString(Object a) {
+ if (a == null) return "null";
+ Class<?> elemType = a.getClass().getComponentType();
+ if (elemType == null) return a.toString();
+ if (elemType.isPrimitive()) {
+ switch (Wrapper.forPrimitiveType(elemType)) {
+ case INT: return Arrays.toString((int[])a);
+ case BYTE: return Arrays.toString((byte[])a);
+ case BOOLEAN: return Arrays.toString((boolean[])a);
+ case SHORT: return Arrays.toString((short[])a);
+ case CHAR: return Arrays.toString((char[])a);
+ case FLOAT: return Arrays.toString((float[])a);
+ case LONG: return Arrays.toString((long[])a);
+ case DOUBLE: return Arrays.toString((double[])a);
+ }
+ }
+ return Arrays.toString((Object[])a);
+ }
+
+ public static void assertArrayEquals(Object[] arr1, Object[] arr2) {
+ if (arr1 == null && arr2 == null) return;
+ if (arr1 != null && arr2 != null && arr1.length == arr2.length) {
+ for (int i = 0; i < arr1.length; i++) {
+ assertEquals(arr1[i], arr2[i]);
+ }
+ return;
+ }
+ throw new AssertionError(Arrays.deepToString(arr1) + " != " + Arrays.deepToString(arr2));
+ }
+
+ public static void assertEquals(Object o1, Object o2) {
+ if (o1 == null && o2 == null) return;
+ if (o1 != null && o1.equals(o2)) return;
+ throw new AssertionError(o1 + " != " + o2);
+ }
+
+ public static void assertTrue(String msg, boolean b) {
+ if (!b) {
+ throw new AssertionError(msg);
+ }
+ }
+
+ public static void assertFalse(String msg, boolean b) {
+ assertTrue(msg, !b);
+ }
+}