--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/test/sun/invoke/util/ValueConversionsTest.java Thu May 12 19:27:49 2011 -0700
@@ -0,0 +1,448 @@
+/*
+ * Copyright (c) 2009, 2011, 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 test.sun.invoke.util;
+
+import sun.invoke.util.ValueConversions;
+import sun.invoke.util.Wrapper;
+import java.lang.invoke.MethodType;
+import java.lang.invoke.MethodHandle;
+import java.lang.invoke.MethodHandles;
+import java.io.Serializable;
+import java.util.Arrays;
+import java.util.Collections;
+import org.junit.Ignore;
+import org.junit.Test;
+import static org.junit.Assert.*;
+
+/* @test
+ * @summary unit tests for value-type conversion utilities
+ * @ignore This test requires a special compilation environment to access sun.inovke.util. Run by hand.
+ * @run junit/othervm test.sun.invoke.util.ValueConversionsTest
+ * @run junit/othervm
+ * -DValueConversionsTest.MAX_ARITY=255 -DValueConversionsTest.START_ARITY=250
+ * test.sun.invoke.util.ValueConversionsTest
+ */
+
+// This might take a while and burn lots of metadata:
+// @run junit/othervm -DValueConversionsTest.MAX_ARITY=255 -DValueConversionsTest.EXHAUSTIVE=true test.sun.invoke.util.ValueConversionsTest
+
+/**
+ *
+ * @author jrose
+ */
+public class ValueConversionsTest {
+ private static final Class CLASS = ValueConversionsTest.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");
+
+ @Test
+ public void testUnbox() throws Throwable {
+ testUnbox(false);
+ }
+
+ @Test
+ public void testUnboxCast() throws Throwable {
+ testUnbox(true);
+ }
+
+ private void testUnbox(boolean doCast) throws Throwable {
+ //System.out.println("unbox");
+ for (Wrapper dst : Wrapper.values()) {
+ //System.out.println(dst);
+ for (Wrapper src : Wrapper.values()) {
+ testUnbox(doCast, dst, src);
+ }
+ }
+ }
+
+ private void testUnbox(boolean doCast, Wrapper dst, Wrapper src) throws Throwable {
+ boolean expectThrow = !doCast && !dst.isConvertibleFrom(src);
+ if (dst == Wrapper.OBJECT || src == Wrapper.OBJECT) return; // must have prims
+ if (dst == Wrapper.OBJECT)
+ expectThrow = false; // everything (even VOID==null here) converts to OBJECT
+ try {
+ for (int n = -5; n < 10; n++) {
+ Object box = src.wrap(n);
+ switch (src) {
+ case VOID: assertEquals(box, null); break;
+ case OBJECT: box = box.toString(); break;
+ case SHORT: assertEquals(box.getClass(), Short.class); break;
+ default: assertEquals(box.getClass(), src.wrapperType()); break;
+ }
+ MethodHandle unboxer;
+ if (doCast)
+ unboxer = ValueConversions.unboxCast(dst.primitiveType());
+ else
+ unboxer = ValueConversions.unbox(dst.primitiveType());
+ Object expResult = (box == null) ? dst.zero() : dst.wrap(box);
+ Object result = null;
+ switch (dst) {
+ case INT: result = (int) unboxer.invokeExact(box); break;
+ case LONG: result = (long) unboxer.invokeExact(box); break;
+ case FLOAT: result = (float) unboxer.invokeExact(box); break;
+ case DOUBLE: result = (double) unboxer.invokeExact(box); break;
+ case CHAR: result = (char) unboxer.invokeExact(box); break;
+ case BYTE: result = (byte) unboxer.invokeExact(box); break;
+ case SHORT: result = (short) unboxer.invokeExact(box); break;
+ case OBJECT: result = (Object) unboxer.invokeExact(box); break;
+ case BOOLEAN: result = (boolean) unboxer.invokeExact(box); break;
+ case VOID: result = null; unboxer.invokeExact(box); break;
+ }
+ if (expectThrow) {
+ expResult = "(need an exception)";
+ }
+ assertEquals("(doCast,expectThrow,dst,src,n,box)="+Arrays.asList(doCast,expectThrow,dst,src,n,box),
+ expResult, result);
+ }
+ } catch (RuntimeException ex) {
+ if (expectThrow) return;
+ System.out.println("Unexpected throw for (doCast,expectThrow,dst,src)="+Arrays.asList(doCast,expectThrow,dst,src));
+ throw ex;
+ }
+ }
+
+ @Test
+ public void testUnboxRaw() throws Throwable {
+ //System.out.println("unboxRaw");
+ for (Wrapper w : Wrapper.values()) {
+ if (w == Wrapper.OBJECT) continue; // skip this; no raw form
+ //System.out.println(w);
+ for (int n = -5; n < 10; n++) {
+ Object box = w.wrap(n);
+ long expResult = w.unwrapRaw(box);
+ Object box2 = w.wrapRaw(expResult);
+ assertEquals(box, box2);
+ MethodHandle unboxer = ValueConversions.unboxRaw(w.primitiveType());
+ long result = -1;
+ switch (w) {
+ case INT: result = (int) unboxer.invokeExact(box); break;
+ case LONG: result = (long) unboxer.invokeExact(box); break;
+ case FLOAT: result = (int) unboxer.invokeExact(box); break;
+ case DOUBLE: result = (long) unboxer.invokeExact(box); break;
+ case CHAR: result = (int) unboxer.invokeExact(box); break;
+ case BYTE: result = (int) unboxer.invokeExact(box); break;
+ case SHORT: result = (int) unboxer.invokeExact(box); break;
+ case BOOLEAN: result = (int) unboxer.invokeExact(box); break;
+ case VOID: result = (int) unboxer.invokeExact(box); break;
+ }
+ assertEquals("(w,n,box)="+Arrays.asList(w,n,box),
+ expResult, result);
+ }
+ }
+ }
+
+ @Test
+ public void testBox() throws Throwable {
+ //System.out.println("box");
+ for (Wrapper w : Wrapper.values()) {
+ if (w == Wrapper.VOID) continue; // skip this; no unboxed form
+ //System.out.println(w);
+ for (int n = -5; n < 10; n++) {
+ Object box = w.wrap(n);
+ MethodHandle boxer = ValueConversions.box(w.primitiveType());
+ Object expResult = box;
+ Object result = null;
+ switch (w) {
+ case INT: result = boxer.invokeExact((int)n); break;
+ case LONG: result = boxer.invokeExact((long)n); break;
+ case FLOAT: result = boxer.invokeExact((float)n); break;
+ case DOUBLE: result = boxer.invokeExact((double)n); break;
+ case CHAR: result = boxer.invokeExact((char)n); break;
+ case BYTE: result = boxer.invokeExact((byte)n); break;
+ case SHORT: result = boxer.invokeExact((short)n); break;
+ case OBJECT: result = boxer.invokeExact((Object)n); break;
+ case BOOLEAN: result = boxer.invokeExact((n & 1) != 0); break;
+ }
+ assertEquals("(dst,src,n,box)="+Arrays.asList(w,w,n,box),
+ expResult, result);
+ }
+ }
+ }
+
+ @Test
+ public void testBoxRaw() throws Throwable {
+ //System.out.println("boxRaw");
+ for (Wrapper w : Wrapper.values()) {
+ if (w == Wrapper.VOID) continue; // skip this; no unboxed form
+ if (w == Wrapper.OBJECT) continue; // skip this; no raw form
+ //System.out.println(w);
+ for (int n = -5; n < 10; n++) {
+ Object box = w.wrap(n);
+ long raw = w.unwrapRaw(box);
+ Object expResult = box;
+ MethodHandle boxer = ValueConversions.boxRaw(w.primitiveType());
+ Object result = null;
+ switch (w) {
+ case INT: result = boxer.invokeExact((int)raw); break;
+ case LONG: result = boxer.invokeExact(raw); break;
+ case FLOAT: result = boxer.invokeExact((int)raw); break;
+ case DOUBLE: result = boxer.invokeExact(raw); break;
+ case CHAR: result = boxer.invokeExact((int)raw); break;
+ case BYTE: result = boxer.invokeExact((int)raw); break;
+ case SHORT: result = boxer.invokeExact((int)raw); break;
+ case BOOLEAN: result = boxer.invokeExact((int)raw); break;
+ }
+ assertEquals("(dst,src,n,box)="+Arrays.asList(w,w,n,box),
+ expResult, result);
+ }
+ }
+ }
+
+ @Test
+ public void testReboxRaw() throws Throwable {
+ //System.out.println("reboxRaw");
+ for (Wrapper w : Wrapper.values()) {
+ Wrapper pw = Wrapper.forPrimitiveType(w.rawPrimitiveType());
+ if (w == Wrapper.VOID) continue; // skip this; no unboxed form
+ if (w == Wrapper.OBJECT) continue; // skip this; no raw form
+ //System.out.println(w);
+ for (int n = -5; n < 10; n++) {
+ Object box = w.wrap(n);
+ Object raw = pw.wrap(w.unwrapRaw(box));
+ Object expResult = box;
+ MethodHandle boxer = ValueConversions.rebox(w.primitiveType());
+ Object result = null;
+ switch (w) {
+ case INT: result = boxer.invokeExact(raw); break;
+ case LONG: result = boxer.invokeExact(raw); break;
+ case FLOAT: result = boxer.invokeExact(raw); break;
+ case DOUBLE: result = boxer.invokeExact(raw); break;
+ case CHAR: result = boxer.invokeExact(raw); break;
+ case BYTE: result = boxer.invokeExact(raw); break;
+ case SHORT: result = boxer.invokeExact(raw); break;
+ case BOOLEAN: result = boxer.invokeExact(raw); break;
+ }
+ assertEquals("(dst,src,n,box)="+Arrays.asList(w,w,n,box),
+ expResult, result);
+ }
+ }
+ }
+
+ @Test
+ public void testCast() throws Throwable {
+ //System.out.println("cast");
+ Class<?>[] types = { Object.class, Serializable.class, String.class, Number.class, Integer.class };
+ Object[] objects = { new Object(), Boolean.FALSE, "hello", (Long)12L, (Integer)6 };
+ for (Class<?> dst : types) {
+ MethodHandle caster = ValueConversions.cast(dst);
+ assertEquals(caster.type(), ValueConversions.identity().type());
+ for (Object obj : objects) {
+ Class<?> src = obj.getClass();
+ boolean canCast;
+ if (dst.isInterface()) {
+ canCast = true;
+ } else {
+ canCast = dst.isAssignableFrom(src);
+ assertEquals(canCast, dst.isInstance(obj));
+ }
+ //System.out.println("obj="+obj+" <: dst="+dst);
+ try {
+ Object result = caster.invokeExact(obj);
+ if (canCast)
+ assertEquals(obj, result);
+ else
+ assertEquals("cast should not have succeeded", dst, obj);
+ } catch (ClassCastException ex) {
+ if (canCast)
+ throw ex;
+ }
+ }
+ }
+ }
+
+ @Test
+ public void testIdentity() throws Throwable {
+ //System.out.println("identity");
+ MethodHandle id = ValueConversions.identity();
+ Object expResult = "foo";
+ Object result = id.invokeExact(expResult);
+ // compiler bug: ValueConversions.identity().invokeExact("bar");
+ assertEquals(expResult, result);
+ }
+
+ @Test
+ public void testVarargsArray() throws Throwable {
+ //System.out.println("varargsArray");
+ 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 = ValueConversions.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);
+ }
+ }
+
+ @Test
+ public void testVarargsReferenceArray() throws Throwable {
+ //System.out.println("varargsReferenceArray");
+ testTypedVarargsArray(Object[].class);
+ testTypedVarargsArray(String[].class);
+ testTypedVarargsArray(Number[].class);
+ }
+
+ @Test
+ public void testVarargsPrimitiveArray() throws Throwable {
+ //System.out.println("varargsPrimitiveArray");
+ 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 void testTypedVarargsArray(Class<?> arrayType) throws Throwable {
+ System.out.println(arrayType.getSimpleName());
+ 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 = ValueConversions.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);
+ 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:
+ 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;
+ }
+ //System.out.println(elemType.getName()+Arrays.toString(args));
+ 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);
+ }
+
+ @Test
+ public void testVarargsList() throws Throwable {
+ //System.out.println("varargsList");
+ 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, 7, MAX)) {
+ MethodHandle target = ValueConversions.varargsList(nargs);
+ Object[] args = new Object[nargs];
+ for (int i = 0; i < nargs; i++)
+ args[i] = "#"+i;
+ Object res = target.invokeWithArguments(args);
+ assertEquals(Arrays.asList(args), res);
+ }
+ }
+}