| /* |
| * 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.io.Serializable; |
| import java.util.Arrays; |
| import java.util.Collections; |
| 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: |
| @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; |
| } |
| //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); |
| } |
| } |
| } |
