Java Code Examples for java.lang.invoke.MethodHandle#asSpreader()
The following examples show how to use
java.lang.invoke.MethodHandle#asSpreader() .
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Example 1
| Source File: BigArityTest.java From dragonwell8_jdk with GNU General Public License v2.0 | 5 votes |
|
private void testArities(Class<? extends Object[]> cls,
int minArity,
int maxArity,
int iterations) throws Throwable {
boolean verbose = (cls == Object[].class);
for (int arity = minArity; arity <= maxArity; arity++) {
if (verbose) System.out.println("arity="+arity);
MethodHandle mh = MH_hashArguments(cls, arity);
MethodHandle mh_VA = mh.asSpreader(cls, arity);
assert(mh_VA.type().parameterType(0) == cls);
testArities(cls, arity, iterations, verbose, mh, mh_VA);
// mh_CA will collect arguments of a particular type and pass them to mh_VA
MethodHandle mh_CA = mh_VA.asCollector(cls, arity);
MethodHandle mh_VA2 = mh_CA.asSpreader(cls, arity);
assert(mh_CA.type().equals(mh.type()));
assert(mh_VA2.type().equals(mh_VA.type()));
if (cls != Object[].class) {
try {
mh_VA2.invokeWithArguments(new Object[arity]);
throw new AssertionError("should not reach");
} catch (ClassCastException | WrongMethodTypeException ex) {
}
}
int iterations_VA = iterations / 100;
testArities(cls, arity, iterations_VA, false, mh_CA, mh_VA2);
}
}
Example 2
| Source File: MethodHandlesTest.java From tutorials with MIT License | 5 votes |
|
@Test
public void givenSpreadedEqualsMethodHandle_whenInvokedOnArray_thenCorrectlyEvaluated() throws Throwable {
MethodHandles.Lookup publicLookup = MethodHandles.publicLookup();
MethodType mt = MethodType.methodType(boolean.class, Object.class);
MethodHandle equalsMH = publicLookup.findVirtual(String.class, "equals", mt);
MethodHandle methodHandle = equalsMH.asSpreader(Object[].class, 2);
assertTrue((boolean) methodHandle.invoke(new Object[] { "java", "java" }));
assertFalse((boolean) methodHandle.invoke(new Object[] { "java", "jova" }));
}
Example 3
| Source File: SpreadCollectTest.java From openjdk-jdk9 with GNU General Public License v2.0 | 5 votes |
|
@Test
public static void testAsSpreaderExample() throws Throwable {
// test the JavaDoc asSpreader-with-pos example
MethodHandle compare = LOOKUP.findStatic(Objects.class, "compare", methodType(int.class, Object.class, Object.class, Comparator.class));
MethodHandle compare2FromArray = compare.asSpreader(0, Object[].class, 2);
Object[] ints = new Object[]{3, 9, 7, 7};
Comparator<Integer> cmp = (a, b) -> a - b;
assertTrue((int) compare2FromArray.invoke(Arrays.copyOfRange(ints, 0, 2), cmp) < 0);
assertTrue((int) compare2FromArray.invoke(Arrays.copyOfRange(ints, 1, 3), cmp) > 0);
assertTrue((int) compare2FromArray.invoke(Arrays.copyOfRange(ints, 2, 4), cmp) == 0);
}
Example 4
| Source File: AbstractInvocationPoint.java From clarity with BSD 3-Clause "New" or "Revised" License | 5 votes |
|
@Override
public void bind(Context ctx) throws IllegalAccessException {
log.debug("bind %s to context", method);
MethodHandle boundHandle = MethodHandles.publicLookup().unreflect(method).bindTo(ctx.getProcessor(processorClass));
if (hasContextParameter()) {
boundHandle = boundHandle.bindTo(ctx);
}
this.methodHandle = boundHandle.asSpreader(Object[].class, arity);
}
Example 5
| Source File: MethodHandleFactory.java From jdk8u_nashorn with GNU General Public License v2.0 | 4 votes |
|
@Override
public MethodHandle asSpreader(final MethodHandle handle, final Class<?> arrayType, final int arrayLength) {
final MethodHandle mh = handle.asSpreader(arrayType, arrayLength);
return debug(mh, "asSpreader", handle, arrayType, arrayLength);
}
Example 6
| Source File: BigArityTest.java From dragonwell8_jdk with GNU General Public License v2.0 | 4 votes |
|
@Test
public void testSpreads() throws Throwable {
System.out.println("testing asSpreader on arity=3");
Object[] args = testArgs(3);
int r0 = Objects.hash(args);
MethodHandle mh = MH_hashArguments(3);
Object r;
r = mh.invokeExact(args[0], args[1], args[2]);
assertEquals(r0, r);
r = mh.invoke(args[0], args[1], args[2]);
assertEquals(r0, r);
r = mh.invoke((Comparable) args[0], (Integer) args[1], (Number) args[2]);
assertEquals(r0, r);
r = mh.invokeWithArguments(args);
assertEquals(r0, r);
for (Class<?> cls0 : new Class<?>[] {
Object[].class, Number[].class, Integer[].class, Comparable[].class
}) {
@SuppressWarnings("unchecked")
Class<? extends Object[]> cls = (Class<? extends Object[]>) cls0;
//Class<? extends Object[]> cls = Object[].class.asSubclass(cls0);
int nargs = args.length, skip;
MethodHandle smh = mh.asSpreader(cls, nargs - (skip = 0));
Object[] tail = Arrays.copyOfRange(args, skip, nargs, cls);
if (cls == Object[].class)
r = smh.invokeExact(tail);
else if (cls == Integer[].class)
r = smh.invokeExact((Integer[]) tail); //warning OK, see 8019340
else
r = smh.invoke(tail);
assertEquals(r0, r);
smh = mh.asSpreader(cls, nargs - (skip = 1));
tail = Arrays.copyOfRange(args, skip, nargs, cls);
if (cls == Object[].class)
r = smh.invokeExact(args[0], tail);
else if (cls == Integer[].class)
r = smh.invokeExact(args[0], (Integer[]) tail);
else
r = smh.invoke(args[0], tail);
assertEquals(r0, r);
smh = mh.asSpreader(cls, nargs - (skip = 2));
tail = Arrays.copyOfRange(args, skip, nargs, cls);
if (cls == Object[].class)
r = smh.invokeExact(args[0], args[1], tail);
else if (cls == Integer[].class)
r = smh.invokeExact(args[0], args[1], (Integer[]) tail);
else
r = smh.invoke(args[0], args[1], tail);
assertEquals(r0, r);
smh = mh.asSpreader(cls, nargs - (skip = 3));
tail = Arrays.copyOfRange(args, skip, nargs, cls);
if (cls == Object[].class)
r = smh.invokeExact(args[0], args[1], args[2], tail);
else if (cls == Integer[].class)
r = smh.invokeExact(args[0], args[1], args[2], (Integer[]) tail);
else
r = smh.invoke(args[0], args[1], args[2], tail);
assertEquals(r0, r);
// Try null array in addition to zero-length array:
tail = null;
if (cls == Object[].class)
r = smh.invokeExact(args[0], args[1], args[2], tail);
else if (cls == Integer[].class)
r = smh.invokeExact(args[0], args[1], args[2], (Integer[]) tail);
else
r = smh.invoke(args[0], args[1], args[2], tail);
assertEquals(r0, r);
}
}
Example 7
| Source File: MethodHandleFactory.java From hottub with GNU General Public License v2.0 | 4 votes |
|
@Override
public MethodHandle asSpreader(final MethodHandle handle, final Class<?> arrayType, final int arrayLength) {
final MethodHandle mh = handle.asSpreader(arrayType, arrayLength);
return debug(mh, "asSpreader", handle, arrayType, arrayLength);
}
Example 8
| Source File: MethodHandleFactory.java From openjdk-jdk9 with GNU General Public License v2.0 | 4 votes |
|
@Override
public MethodHandle asSpreader(final MethodHandle handle, final Class<?> arrayType, final int arrayLength) {
final MethodHandle mh = handle.asSpreader(arrayType, arrayLength);
return debug(mh, "asSpreader", handle, arrayType, arrayLength);
}
Example 9
| Source File: BigArityTest.java From hottub with GNU General Public License v2.0 | 4 votes |
|
@Test
public void testSpreads() throws Throwable {
System.out.println("testing asSpreader on arity=3");
Object[] args = testArgs(3);
int r0 = Objects.hash(args);
MethodHandle mh = MH_hashArguments(3);
Object r;
r = mh.invokeExact(args[0], args[1], args[2]);
assertEquals(r0, r);
r = mh.invoke(args[0], args[1], args[2]);
assertEquals(r0, r);
r = mh.invoke((Comparable) args[0], (Integer) args[1], (Number) args[2]);
assertEquals(r0, r);
r = mh.invokeWithArguments(args);
assertEquals(r0, r);
for (Class<?> cls0 : new Class<?>[] {
Object[].class, Number[].class, Integer[].class, Comparable[].class
}) {
@SuppressWarnings("unchecked")
Class<? extends Object[]> cls = (Class<? extends Object[]>) cls0;
//Class<? extends Object[]> cls = Object[].class.asSubclass(cls0);
int nargs = args.length, skip;
MethodHandle smh = mh.asSpreader(cls, nargs - (skip = 0));
Object[] tail = Arrays.copyOfRange(args, skip, nargs, cls);
if (cls == Object[].class)
r = smh.invokeExact(tail);
else if (cls == Integer[].class)
r = smh.invokeExact((Integer[]) tail); //warning OK, see 8019340
else
r = smh.invoke(tail);
assertEquals(r0, r);
smh = mh.asSpreader(cls, nargs - (skip = 1));
tail = Arrays.copyOfRange(args, skip, nargs, cls);
if (cls == Object[].class)
r = smh.invokeExact(args[0], tail);
else if (cls == Integer[].class)
r = smh.invokeExact(args[0], (Integer[]) tail);
else
r = smh.invoke(args[0], tail);
assertEquals(r0, r);
smh = mh.asSpreader(cls, nargs - (skip = 2));
tail = Arrays.copyOfRange(args, skip, nargs, cls);
if (cls == Object[].class)
r = smh.invokeExact(args[0], args[1], tail);
else if (cls == Integer[].class)
r = smh.invokeExact(args[0], args[1], (Integer[]) tail);
else
r = smh.invoke(args[0], args[1], tail);
assertEquals(r0, r);
smh = mh.asSpreader(cls, nargs - (skip = 3));
tail = Arrays.copyOfRange(args, skip, nargs, cls);
if (cls == Object[].class)
r = smh.invokeExact(args[0], args[1], args[2], tail);
else if (cls == Integer[].class)
r = smh.invokeExact(args[0], args[1], args[2], (Integer[]) tail);
else
r = smh.invoke(args[0], args[1], args[2], tail);
assertEquals(r0, r);
// Try null array in addition to zero-length array:
tail = null;
if (cls == Object[].class)
r = smh.invokeExact(args[0], args[1], args[2], tail);
else if (cls == Integer[].class)
r = smh.invokeExact(args[0], args[1], args[2], (Integer[]) tail);
else
r = smh.invoke(args[0], args[1], args[2], tail);
assertEquals(r0, r);
}
}
Example 10
| Source File: BigArityTest.java From openjdk-8-source with GNU General Public License v2.0 | 4 votes |
|
@Test
public void testSpreads() throws Throwable {
System.out.println("testing asSpreader on arity=3");
Object[] args = testArgs(3);
int r0 = Objects.hash(args);
MethodHandle mh = MH_hashArguments(3);
Object r;
r = mh.invokeExact(args[0], args[1], args[2]);
assertEquals(r0, r);
r = mh.invoke(args[0], args[1], args[2]);
assertEquals(r0, r);
r = mh.invoke((Comparable) args[0], (Integer) args[1], (Number) args[2]);
assertEquals(r0, r);
r = mh.invokeWithArguments(args);
assertEquals(r0, r);
for (Class<?> cls0 : new Class<?>[] {
Object[].class, Number[].class, Integer[].class, Comparable[].class
}) {
@SuppressWarnings("unchecked")
Class<? extends Object[]> cls = (Class<? extends Object[]>) cls0;
//Class<? extends Object[]> cls = Object[].class.asSubclass(cls0);
int nargs = args.length, skip;
MethodHandle smh = mh.asSpreader(cls, nargs - (skip = 0));
Object[] tail = Arrays.copyOfRange(args, skip, nargs, cls);
if (cls == Object[].class)
r = smh.invokeExact(tail);
else if (cls == Integer[].class)
r = smh.invokeExact((Integer[]) tail); //warning OK, see 8019340
else
r = smh.invoke(tail);
assertEquals(r0, r);
smh = mh.asSpreader(cls, nargs - (skip = 1));
tail = Arrays.copyOfRange(args, skip, nargs, cls);
if (cls == Object[].class)
r = smh.invokeExact(args[0], tail);
else if (cls == Integer[].class)
r = smh.invokeExact(args[0], (Integer[]) tail);
else
r = smh.invoke(args[0], tail);
assertEquals(r0, r);
smh = mh.asSpreader(cls, nargs - (skip = 2));
tail = Arrays.copyOfRange(args, skip, nargs, cls);
if (cls == Object[].class)
r = smh.invokeExact(args[0], args[1], tail);
else if (cls == Integer[].class)
r = smh.invokeExact(args[0], args[1], (Integer[]) tail);
else
r = smh.invoke(args[0], args[1], tail);
assertEquals(r0, r);
smh = mh.asSpreader(cls, nargs - (skip = 3));
tail = Arrays.copyOfRange(args, skip, nargs, cls);
if (cls == Object[].class)
r = smh.invokeExact(args[0], args[1], args[2], tail);
else if (cls == Integer[].class)
r = smh.invokeExact(args[0], args[1], args[2], (Integer[]) tail);
else
r = smh.invoke(args[0], args[1], args[2], tail);
assertEquals(r0, r);
// Try null array in addition to zero-length array:
tail = null;
if (cls == Object[].class)
r = smh.invokeExact(args[0], args[1], args[2], tail);
else if (cls == Integer[].class)
r = smh.invokeExact(args[0], args[1], args[2], (Integer[]) tail);
else
r = smh.invoke(args[0], args[1], args[2], tail);
assertEquals(r0, r);
}
}
Example 11
| Source File: MethodHandleFactory.java From openjdk-jdk8u-backup with GNU General Public License v2.0 | 4 votes |
|
@Override
public MethodHandle asSpreader(final MethodHandle handle, final Class<?> arrayType, final int arrayLength) {
final MethodHandle mh = handle.asSpreader(arrayType, arrayLength);
return debug(mh, "asSpreader", handle, arrayType, arrayLength);
}
Example 12
| Source File: BigArityTest.java From jdk8u-dev-jdk with GNU General Public License v2.0 | 4 votes |
|
@Test
public void testSpreads() throws Throwable {
System.out.println("testing asSpreader on arity=3");
Object[] args = testArgs(3);
int r0 = Objects.hash(args);
MethodHandle mh = MH_hashArguments(3);
Object r;
r = mh.invokeExact(args[0], args[1], args[2]);
assertEquals(r0, r);
r = mh.invoke(args[0], args[1], args[2]);
assertEquals(r0, r);
r = mh.invoke((Comparable) args[0], (Integer) args[1], (Number) args[2]);
assertEquals(r0, r);
r = mh.invokeWithArguments(args);
assertEquals(r0, r);
for (Class<?> cls0 : new Class<?>[] {
Object[].class, Number[].class, Integer[].class, Comparable[].class
}) {
@SuppressWarnings("unchecked")
Class<? extends Object[]> cls = (Class<? extends Object[]>) cls0;
//Class<? extends Object[]> cls = Object[].class.asSubclass(cls0);
int nargs = args.length, skip;
MethodHandle smh = mh.asSpreader(cls, nargs - (skip = 0));
Object[] tail = Arrays.copyOfRange(args, skip, nargs, cls);
if (cls == Object[].class)
r = smh.invokeExact(tail);
else if (cls == Integer[].class)
r = smh.invokeExact((Integer[]) tail); //warning OK, see 8019340
else
r = smh.invoke(tail);
assertEquals(r0, r);
smh = mh.asSpreader(cls, nargs - (skip = 1));
tail = Arrays.copyOfRange(args, skip, nargs, cls);
if (cls == Object[].class)
r = smh.invokeExact(args[0], tail);
else if (cls == Integer[].class)
r = smh.invokeExact(args[0], (Integer[]) tail);
else
r = smh.invoke(args[0], tail);
assertEquals(r0, r);
smh = mh.asSpreader(cls, nargs - (skip = 2));
tail = Arrays.copyOfRange(args, skip, nargs, cls);
if (cls == Object[].class)
r = smh.invokeExact(args[0], args[1], tail);
else if (cls == Integer[].class)
r = smh.invokeExact(args[0], args[1], (Integer[]) tail);
else
r = smh.invoke(args[0], args[1], tail);
assertEquals(r0, r);
smh = mh.asSpreader(cls, nargs - (skip = 3));
tail = Arrays.copyOfRange(args, skip, nargs, cls);
if (cls == Object[].class)
r = smh.invokeExact(args[0], args[1], args[2], tail);
else if (cls == Integer[].class)
r = smh.invokeExact(args[0], args[1], args[2], (Integer[]) tail);
else
r = smh.invoke(args[0], args[1], args[2], tail);
assertEquals(r0, r);
// Try null array in addition to zero-length array:
tail = null;
if (cls == Object[].class)
r = smh.invokeExact(args[0], args[1], args[2], tail);
else if (cls == Integer[].class)
r = smh.invokeExact(args[0], args[1], args[2], (Integer[]) tail);
else
r = smh.invoke(args[0], args[1], args[2], tail);
assertEquals(r0, r);
}
}
Example 13
| Source File: MethodHandleFactory.java From openjdk-jdk8u with GNU General Public License v2.0 | 4 votes |
|
@Override
public MethodHandle asSpreader(final MethodHandle handle, final Class<?> arrayType, final int arrayLength) {
final MethodHandle mh = handle.asSpreader(arrayType, arrayLength);
return debug(mh, "asSpreader", handle, arrayType, arrayLength);
}
Example 14
| Source File: DynamicHelper.java From dart2java with Apache License 2.0 | 4 votes |
|
public static Object invoke(String methodName, Object... recvAndArgs) {
// TODO(springerm): Proper exception handling
// TODO(springerm): Need to do Dart type checks for arguments
// TODO(springerm): Special case methods defined on DartObject
try {
MethodHandles.Lookup lookup = MethodHandles.publicLookup();
Object receiver = recvAndArgs[0];
Class<?> receiverClass = receiver.getClass();
boolean checkForOverloads = false;
// TODO(springerm): Handle static methods properly
// The index of the first argument. When calling a static method, the
// first argument starts at index 0, because no "self" object is passed
int startArgs = 1;
if (classImpls.containsKey(receiverClass)) {
receiverClass = classImpls.get(receiverClass);
// There may be multiple overloadings for operators, we have to
// pick the correct one
checkForOverloads = true;
startArgs = 0;
} else if (classesWithJavaInterfaces.contains(receiverClass)) {
checkForOverloads = true;
}
// TODO(springerm): Try to use MethodHandles API for lookup
// TODO(springerm): Look into byte code generation for invokedynamic
Method method = null;
methodLoop:
for (Method m : receiverClass.getMethods()) {
if (m.getName().equals(methodName)) {
if (checkForOverloads) {
Class<?>[] parameterTypes = m.getParameterTypes();
// Check if the number of parameters match
if (parameterTypes.length != recvAndArgs.length - startArgs) {
continue methodLoop;
}
// Check if the parameter types for this method match
for (int i = startArgs; i < parameterTypes.length; i++) {
if (!parameterTypes[i - startArgs].isAssignableFrom(
boxedToMaybeUnboxedType(recvAndArgs[i].getClass()))
&& !parameterTypes[i - startArgs].isAssignableFrom(
recvAndArgs[i].getClass())) {
// Picked the wrong method, continue searching
continue methodLoop;
}
}
}
// Found matching method
method = m;
break methodLoop;
}
}
if (method == null) {
String argTypes = "";
for (Object o : recvAndArgs) {
argTypes = argTypes + o.getClass().getName() + ", ";
}
throw new NoSuchMethodException(
receiverClass.getName() + "." + methodName
+ " (" + argTypes + ") not found");
}
MethodHandle handle = lookup.unreflect(method);
MethodHandle handleSpreader = handle.asSpreader(
Object[].class, recvAndArgs.length);
Object result = handleSpreader.invoke(recvAndArgs);
return result;
} catch (Throwable t) {
throw new RuntimeException(t);
}
}
Example 15
| Source File: BigArityTest.java From openjdk-jdk8u with GNU General Public License v2.0 | 4 votes |
|
@Test
public void testSpreads() throws Throwable {
System.out.println("testing asSpreader on arity=3");
Object[] args = testArgs(3);
int r0 = Objects.hash(args);
MethodHandle mh = MH_hashArguments(3);
Object r;
r = mh.invokeExact(args[0], args[1], args[2]);
assertEquals(r0, r);
r = mh.invoke(args[0], args[1], args[2]);
assertEquals(r0, r);
r = mh.invoke((Comparable) args[0], (Integer) args[1], (Number) args[2]);
assertEquals(r0, r);
r = mh.invokeWithArguments(args);
assertEquals(r0, r);
for (Class<?> cls0 : new Class<?>[] {
Object[].class, Number[].class, Integer[].class, Comparable[].class
}) {
@SuppressWarnings("unchecked")
Class<? extends Object[]> cls = (Class<? extends Object[]>) cls0;
//Class<? extends Object[]> cls = Object[].class.asSubclass(cls0);
int nargs = args.length, skip;
MethodHandle smh = mh.asSpreader(cls, nargs - (skip = 0));
Object[] tail = Arrays.copyOfRange(args, skip, nargs, cls);
if (cls == Object[].class)
r = smh.invokeExact(tail);
else if (cls == Integer[].class)
r = smh.invokeExact((Integer[]) tail); //warning OK, see 8019340
else
r = smh.invoke(tail);
assertEquals(r0, r);
smh = mh.asSpreader(cls, nargs - (skip = 1));
tail = Arrays.copyOfRange(args, skip, nargs, cls);
if (cls == Object[].class)
r = smh.invokeExact(args[0], tail);
else if (cls == Integer[].class)
r = smh.invokeExact(args[0], (Integer[]) tail);
else
r = smh.invoke(args[0], tail);
assertEquals(r0, r);
smh = mh.asSpreader(cls, nargs - (skip = 2));
tail = Arrays.copyOfRange(args, skip, nargs, cls);
if (cls == Object[].class)
r = smh.invokeExact(args[0], args[1], tail);
else if (cls == Integer[].class)
r = smh.invokeExact(args[0], args[1], (Integer[]) tail);
else
r = smh.invoke(args[0], args[1], tail);
assertEquals(r0, r);
smh = mh.asSpreader(cls, nargs - (skip = 3));
tail = Arrays.copyOfRange(args, skip, nargs, cls);
if (cls == Object[].class)
r = smh.invokeExact(args[0], args[1], args[2], tail);
else if (cls == Integer[].class)
r = smh.invokeExact(args[0], args[1], args[2], (Integer[]) tail);
else
r = smh.invoke(args[0], args[1], args[2], tail);
assertEquals(r0, r);
// Try null array in addition to zero-length array:
tail = null;
if (cls == Object[].class)
r = smh.invokeExact(args[0], args[1], args[2], tail);
else if (cls == Integer[].class)
r = smh.invokeExact(args[0], args[1], args[2], (Integer[]) tail);
else
r = smh.invoke(args[0], args[1], args[2], tail);
assertEquals(r0, r);
}
}
Example 16
| Source File: MethodHandleFactory.java From jdk8u60 with GNU General Public License v2.0 | 4 votes |
|
@Override
public MethodHandle asSpreader(final MethodHandle handle, final Class<?> arrayType, final int arrayLength) {
final MethodHandle mh = handle.asSpreader(arrayType, arrayLength);
return debug(mh, "asSpreader", handle, arrayType, arrayLength);
}
Example 17
| Source File: BigArityTest.java From openjdk-8 with GNU General Public License v2.0 | 4 votes |
|
@Test
public void testSpreads() throws Throwable {
System.out.println("testing asSpreader on arity=3");
Object[] args = testArgs(3);
int r0 = Objects.hash(args);
MethodHandle mh = MH_hashArguments(3);
Object r;
r = mh.invokeExact(args[0], args[1], args[2]);
assertEquals(r0, r);
r = mh.invoke(args[0], args[1], args[2]);
assertEquals(r0, r);
r = mh.invoke((Comparable) args[0], (Integer) args[1], (Number) args[2]);
assertEquals(r0, r);
r = mh.invokeWithArguments(args);
assertEquals(r0, r);
for (Class<?> cls0 : new Class<?>[] {
Object[].class, Number[].class, Integer[].class, Comparable[].class
}) {
@SuppressWarnings("unchecked")
Class<? extends Object[]> cls = (Class<? extends Object[]>) cls0;
//Class<? extends Object[]> cls = Object[].class.asSubclass(cls0);
int nargs = args.length, skip;
MethodHandle smh = mh.asSpreader(cls, nargs - (skip = 0));
Object[] tail = Arrays.copyOfRange(args, skip, nargs, cls);
if (cls == Object[].class)
r = smh.invokeExact(tail);
else if (cls == Integer[].class)
r = smh.invokeExact((Integer[]) tail); //warning OK, see 8019340
else
r = smh.invoke(tail);
assertEquals(r0, r);
smh = mh.asSpreader(cls, nargs - (skip = 1));
tail = Arrays.copyOfRange(args, skip, nargs, cls);
if (cls == Object[].class)
r = smh.invokeExact(args[0], tail);
else if (cls == Integer[].class)
r = smh.invokeExact(args[0], (Integer[]) tail);
else
r = smh.invoke(args[0], tail);
assertEquals(r0, r);
smh = mh.asSpreader(cls, nargs - (skip = 2));
tail = Arrays.copyOfRange(args, skip, nargs, cls);
if (cls == Object[].class)
r = smh.invokeExact(args[0], args[1], tail);
else if (cls == Integer[].class)
r = smh.invokeExact(args[0], args[1], (Integer[]) tail);
else
r = smh.invoke(args[0], args[1], tail);
assertEquals(r0, r);
smh = mh.asSpreader(cls, nargs - (skip = 3));
tail = Arrays.copyOfRange(args, skip, nargs, cls);
if (cls == Object[].class)
r = smh.invokeExact(args[0], args[1], args[2], tail);
else if (cls == Integer[].class)
r = smh.invokeExact(args[0], args[1], args[2], (Integer[]) tail);
else
r = smh.invoke(args[0], args[1], args[2], tail);
assertEquals(r0, r);
// Try null array in addition to zero-length array:
tail = null;
if (cls == Object[].class)
r = smh.invokeExact(args[0], args[1], args[2], tail);
else if (cls == Integer[].class)
r = smh.invokeExact(args[0], args[1], args[2], (Integer[]) tail);
else
r = smh.invoke(args[0], args[1], args[2], tail);
assertEquals(r0, r);
}
}
Example 18
| Source File: BigArityTest.java From jdk8u60 with GNU General Public License v2.0 | 4 votes |
|
@Test
public void testSpreads() throws Throwable {
System.out.println("testing asSpreader on arity=3");
Object[] args = testArgs(3);
int r0 = Objects.hash(args);
MethodHandle mh = MH_hashArguments(3);
Object r;
r = mh.invokeExact(args[0], args[1], args[2]);
assertEquals(r0, r);
r = mh.invoke(args[0], args[1], args[2]);
assertEquals(r0, r);
r = mh.invoke((Comparable) args[0], (Integer) args[1], (Number) args[2]);
assertEquals(r0, r);
r = mh.invokeWithArguments(args);
assertEquals(r0, r);
for (Class<?> cls0 : new Class<?>[] {
Object[].class, Number[].class, Integer[].class, Comparable[].class
}) {
@SuppressWarnings("unchecked")
Class<? extends Object[]> cls = (Class<? extends Object[]>) cls0;
//Class<? extends Object[]> cls = Object[].class.asSubclass(cls0);
int nargs = args.length, skip;
MethodHandle smh = mh.asSpreader(cls, nargs - (skip = 0));
Object[] tail = Arrays.copyOfRange(args, skip, nargs, cls);
if (cls == Object[].class)
r = smh.invokeExact(tail);
else if (cls == Integer[].class)
r = smh.invokeExact((Integer[]) tail); //warning OK, see 8019340
else
r = smh.invoke(tail);
assertEquals(r0, r);
smh = mh.asSpreader(cls, nargs - (skip = 1));
tail = Arrays.copyOfRange(args, skip, nargs, cls);
if (cls == Object[].class)
r = smh.invokeExact(args[0], tail);
else if (cls == Integer[].class)
r = smh.invokeExact(args[0], (Integer[]) tail);
else
r = smh.invoke(args[0], tail);
assertEquals(r0, r);
smh = mh.asSpreader(cls, nargs - (skip = 2));
tail = Arrays.copyOfRange(args, skip, nargs, cls);
if (cls == Object[].class)
r = smh.invokeExact(args[0], args[1], tail);
else if (cls == Integer[].class)
r = smh.invokeExact(args[0], args[1], (Integer[]) tail);
else
r = smh.invoke(args[0], args[1], tail);
assertEquals(r0, r);
smh = mh.asSpreader(cls, nargs - (skip = 3));
tail = Arrays.copyOfRange(args, skip, nargs, cls);
if (cls == Object[].class)
r = smh.invokeExact(args[0], args[1], args[2], tail);
else if (cls == Integer[].class)
r = smh.invokeExact(args[0], args[1], args[2], (Integer[]) tail);
else
r = smh.invoke(args[0], args[1], args[2], tail);
assertEquals(r0, r);
// Try null array in addition to zero-length array:
tail = null;
if (cls == Object[].class)
r = smh.invokeExact(args[0], args[1], args[2], tail);
else if (cls == Integer[].class)
r = smh.invokeExact(args[0], args[1], args[2], (Integer[]) tail);
else
r = smh.invoke(args[0], args[1], args[2], tail);
assertEquals(r0, r);
}
}
Example 19
| Source File: MethodHandleFactory.java From TencentKona-8 with GNU General Public License v2.0 | 4 votes |
|
@Override
public MethodHandle asSpreader(final MethodHandle handle, final Class<?> arrayType, final int arrayLength) {
final MethodHandle mh = handle.asSpreader(arrayType, arrayLength);
return debug(mh, "asSpreader", handle, arrayType, arrayLength);
}
Example 20
| Source File: MethodHandleFactory.java From nashorn with GNU General Public License v2.0 | 4 votes |
|
@Override
public MethodHandle asSpreader(final MethodHandle handle, final Class<?> arrayType, final int arrayLength) {
return handle.asSpreader(arrayType, arrayLength);
}
