sun.invoke.util.ValueConversions Java Examples
The following examples show how to use
sun.invoke.util.ValueConversions.
You can vote up the ones you like or vote down the ones you don't like,
and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example #1
| Source File: BoundMethodHandle.java From openjdk-8 with GNU General Public License v2.0 | 6 votes |
|
static MethodHandle bindSingle(MethodType type, LambdaForm form, char xtype, Object x) {
// for some type signatures, there exist pre-defined concrete BMH classes
try {
switch (xtype) {
case 'L':
if (true) return bindSingle(type, form, x); // Use known fast path.
return (BoundMethodHandle) SpeciesData.EMPTY.extendWithType('L').constructor[0].invokeBasic(type, form, x);
case 'I':
return (BoundMethodHandle) SpeciesData.EMPTY.extendWithType('I').constructor[0].invokeBasic(type, form, ValueConversions.widenSubword(x));
case 'J':
return (BoundMethodHandle) SpeciesData.EMPTY.extendWithType('J').constructor[0].invokeBasic(type, form, (long) x);
case 'F':
return (BoundMethodHandle) SpeciesData.EMPTY.extendWithType('F').constructor[0].invokeBasic(type, form, (float) x);
case 'D':
return (BoundMethodHandle) SpeciesData.EMPTY.extendWithType('D').constructor[0].invokeBasic(type, form, (double) x);
default : throw new InternalError("unexpected xtype: " + xtype);
}
} catch (Throwable t) {
throw newInternalError(t);
}
}
Example #2
| Source File: ValueConversionsTest.java From jdk8u_jdk with GNU General Public License v2.0 | 6 votes |
|
@Test
public void testCast() throws Throwable {
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().bindTo(dst);
assertEquals(caster.type(), MethodHandles.identity(Object.class).type());
for (Object obj : objects) {
Class<?> src = obj.getClass();
boolean canCast = dst.isAssignableFrom(src);
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;
}
}
}
}
Example #3
| Source File: ValueConversionsTest.java From jdk8u-dev-jdk with GNU General Public License v2.0 | 6 votes |
|
@Test
public void testBox() throws Throwable {
for (Wrapper w : Wrapper.values()) {
if (w == Wrapper.VOID) continue; // skip this; no unboxed form
if (w == Wrapper.OBJECT) continue; // skip this; already unboxed
for (int n = -5; n < 10; n++) {
Object box = w.wrap(n);
MethodHandle boxer = ValueConversions.boxExact(w);
Object expResult = box;
Object result = null;
switch (w) {
case INT: result = (Integer) boxer.invokeExact(/*int*/n); break;
case LONG: result = (Long) boxer.invokeExact((long)n); break;
case FLOAT: result = (Float) boxer.invokeExact((float)n); break;
case DOUBLE: result = (Double) boxer.invokeExact((double)n); break;
case CHAR: result = (Character) boxer.invokeExact((char)n); break;
case BYTE: result = (Byte) boxer.invokeExact((byte)n); break;
case SHORT: result = (Short) boxer.invokeExact((short)n); break;
case BOOLEAN: result = (Boolean) boxer.invokeExact((n & 1) != 0); break;
}
assertEquals("(dst,src,n,box)="+Arrays.asList(w,w,n,box),
expResult, result);
}
}
}
Example #4
| Source File: BoundMethodHandle.java From dragonwell8_jdk with GNU General Public License v2.0 | 6 votes |
|
static BoundMethodHandle bindSingle(MethodType type, LambdaForm form, BasicType xtype, Object x) {
// for some type signatures, there exist pre-defined concrete BMH classes
try {
switch (xtype) {
case L_TYPE:
return bindSingle(type, form, x); // Use known fast path.
case I_TYPE:
return (BoundMethodHandle) SpeciesData.EMPTY.extendWith(I_TYPE).constructor().invokeBasic(type, form, ValueConversions.widenSubword(x));
case J_TYPE:
return (BoundMethodHandle) SpeciesData.EMPTY.extendWith(J_TYPE).constructor().invokeBasic(type, form, (long) x);
case F_TYPE:
return (BoundMethodHandle) SpeciesData.EMPTY.extendWith(F_TYPE).constructor().invokeBasic(type, form, (float) x);
case D_TYPE:
return (BoundMethodHandle) SpeciesData.EMPTY.extendWith(D_TYPE).constructor().invokeBasic(type, form, (double) x);
default : throw newInternalError("unexpected xtype: " + xtype);
}
} catch (Throwable t) {
throw newInternalError(t);
}
}
Example #5
| Source File: ValueConversionsTest.java From openjdk-8 with GNU General Public License v2.0 | 6 votes |
|
@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 = dst.isAssignableFrom(src);
//System.out.println("obj="+obj+" <: dst="+dst+(canCast ? " (OK)" : " (will fail)"));
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;
}
}
}
}
Example #6
| Source File: ValueConversionsTest.java From dragonwell8_jdk with GNU General Public License v2.0 | 6 votes |
|
@Test
public void testBox() throws Throwable {
for (Wrapper w : Wrapper.values()) {
if (w == Wrapper.VOID) continue; // skip this; no unboxed form
if (w == Wrapper.OBJECT) continue; // skip this; already unboxed
for (int n = -5; n < 10; n++) {
Object box = w.wrap(n);
MethodHandle boxer = ValueConversions.boxExact(w);
Object expResult = box;
Object result = null;
switch (w) {
case INT: result = (Integer) boxer.invokeExact(/*int*/n); break;
case LONG: result = (Long) boxer.invokeExact((long)n); break;
case FLOAT: result = (Float) boxer.invokeExact((float)n); break;
case DOUBLE: result = (Double) boxer.invokeExact((double)n); break;
case CHAR: result = (Character) boxer.invokeExact((char)n); break;
case BYTE: result = (Byte) boxer.invokeExact((byte)n); break;
case SHORT: result = (Short) boxer.invokeExact((short)n); break;
case BOOLEAN: result = (Boolean) boxer.invokeExact((n & 1) != 0); break;
}
assertEquals("(dst,src,n,box)="+Arrays.asList(w,w,n,box),
expResult, result);
}
}
}
Example #7
| Source File: ValueConversionsTest.java From hottub with GNU General Public License v2.0 | 6 votes |
|
@Test
public void testBox() throws Throwable {
for (Wrapper w : Wrapper.values()) {
if (w == Wrapper.VOID) continue; // skip this; no unboxed form
if (w == Wrapper.OBJECT) continue; // skip this; already unboxed
for (int n = -5; n < 10; n++) {
Object box = w.wrap(n);
MethodHandle boxer = ValueConversions.boxExact(w);
Object expResult = box;
Object result = null;
switch (w) {
case INT: result = (Integer) boxer.invokeExact(/*int*/n); break;
case LONG: result = (Long) boxer.invokeExact((long)n); break;
case FLOAT: result = (Float) boxer.invokeExact((float)n); break;
case DOUBLE: result = (Double) boxer.invokeExact((double)n); break;
case CHAR: result = (Character) boxer.invokeExact((char)n); break;
case BYTE: result = (Byte) boxer.invokeExact((byte)n); break;
case SHORT: result = (Short) boxer.invokeExact((short)n); break;
case BOOLEAN: result = (Boolean) boxer.invokeExact((n & 1) != 0); break;
}
assertEquals("(dst,src,n,box)="+Arrays.asList(w,w,n,box),
expResult, result);
}
}
}
Example #8
| Source File: ValueConversionsTest.java From hottub with GNU General Public License v2.0 | 6 votes |
|
@Test
public void testCast() throws Throwable {
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().bindTo(dst);
assertEquals(caster.type(), MethodHandles.identity(Object.class).type());
for (Object obj : objects) {
Class<?> src = obj.getClass();
boolean canCast = dst.isAssignableFrom(src);
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;
}
}
}
}
Example #9
| Source File: ValueConversionsTest.java From TencentKona-8 with GNU General Public License v2.0 | 6 votes |
|
@Test
public void testBox() throws Throwable {
for (Wrapper w : Wrapper.values()) {
if (w == Wrapper.VOID) continue; // skip this; no unboxed form
if (w == Wrapper.OBJECT) continue; // skip this; already unboxed
for (int n = -5; n < 10; n++) {
Object box = w.wrap(n);
MethodHandle boxer = ValueConversions.boxExact(w);
Object expResult = box;
Object result = null;
switch (w) {
case INT: result = (Integer) boxer.invokeExact(/*int*/n); break;
case LONG: result = (Long) boxer.invokeExact((long)n); break;
case FLOAT: result = (Float) boxer.invokeExact((float)n); break;
case DOUBLE: result = (Double) boxer.invokeExact((double)n); break;
case CHAR: result = (Character) boxer.invokeExact((char)n); break;
case BYTE: result = (Byte) boxer.invokeExact((byte)n); break;
case SHORT: result = (Short) boxer.invokeExact((short)n); break;
case BOOLEAN: result = (Boolean) boxer.invokeExact((n & 1) != 0); break;
}
assertEquals("(dst,src,n,box)="+Arrays.asList(w,w,n,box),
expResult, result);
}
}
}
Example #10
| Source File: ValueConversionsTest.java From TencentKona-8 with GNU General Public License v2.0 | 6 votes |
|
@Test
public void testCast() throws Throwable {
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().bindTo(dst);
assertEquals(caster.type(), MethodHandles.identity(Object.class).type());
for (Object obj : objects) {
Class<?> src = obj.getClass();
boolean canCast = dst.isAssignableFrom(src);
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;
}
}
}
}
Example #11
| Source File: BoundMethodHandle.java From Java8CN with Apache License 2.0 | 6 votes |
|
static BoundMethodHandle bindSingle(MethodType type, LambdaForm form, BasicType xtype, Object x) {
// for some type signatures, there exist pre-defined concrete BMH classes
try {
switch (xtype) {
case L_TYPE:
return bindSingle(type, form, x); // Use known fast path.
case I_TYPE:
return (BoundMethodHandle) SpeciesData.EMPTY.extendWith(I_TYPE).constructor().invokeBasic(type, form, ValueConversions.widenSubword(x));
case J_TYPE:
return (BoundMethodHandle) SpeciesData.EMPTY.extendWith(J_TYPE).constructor().invokeBasic(type, form, (long) x);
case F_TYPE:
return (BoundMethodHandle) SpeciesData.EMPTY.extendWith(F_TYPE).constructor().invokeBasic(type, form, (float) x);
case D_TYPE:
return (BoundMethodHandle) SpeciesData.EMPTY.extendWith(D_TYPE).constructor().invokeBasic(type, form, (double) x);
default : throw newInternalError("unexpected xtype: " + xtype);
}
} catch (Throwable t) {
throw newInternalError(t);
}
}
Example #12
| Source File: ValueConversionsTest.java From jdk8u_jdk with GNU General Public License v2.0 | 6 votes |
|
@Test
public void testBox() throws Throwable {
for (Wrapper w : Wrapper.values()) {
if (w == Wrapper.VOID) continue; // skip this; no unboxed form
if (w == Wrapper.OBJECT) continue; // skip this; already unboxed
for (int n = -5; n < 10; n++) {
Object box = w.wrap(n);
MethodHandle boxer = ValueConversions.boxExact(w);
Object expResult = box;
Object result = null;
switch (w) {
case INT: result = (Integer) boxer.invokeExact(/*int*/n); break;
case LONG: result = (Long) boxer.invokeExact((long)n); break;
case FLOAT: result = (Float) boxer.invokeExact((float)n); break;
case DOUBLE: result = (Double) boxer.invokeExact((double)n); break;
case CHAR: result = (Character) boxer.invokeExact((char)n); break;
case BYTE: result = (Byte) boxer.invokeExact((byte)n); break;
case SHORT: result = (Short) boxer.invokeExact((short)n); break;
case BOOLEAN: result = (Boolean) boxer.invokeExact((n & 1) != 0); break;
}
assertEquals("(dst,src,n,box)="+Arrays.asList(w,w,n,box),
expResult, result);
}
}
}
Example #13
| Source File: BoundMethodHandle.java From jdk8u60 with GNU General Public License v2.0 | 6 votes |
|
static BoundMethodHandle bindSingle(MethodType type, LambdaForm form, BasicType xtype, Object x) {
// for some type signatures, there exist pre-defined concrete BMH classes
try {
switch (xtype) {
case L_TYPE:
return bindSingle(type, form, x); // Use known fast path.
case I_TYPE:
return (BoundMethodHandle) SpeciesData.EMPTY.extendWith(I_TYPE).constructor().invokeBasic(type, form, ValueConversions.widenSubword(x));
case J_TYPE:
return (BoundMethodHandle) SpeciesData.EMPTY.extendWith(J_TYPE).constructor().invokeBasic(type, form, (long) x);
case F_TYPE:
return (BoundMethodHandle) SpeciesData.EMPTY.extendWith(F_TYPE).constructor().invokeBasic(type, form, (float) x);
case D_TYPE:
return (BoundMethodHandle) SpeciesData.EMPTY.extendWith(D_TYPE).constructor().invokeBasic(type, form, (double) x);
default : throw newInternalError("unexpected xtype: " + xtype);
}
} catch (Throwable t) {
throw newInternalError(t);
}
}
Example #14
| Source File: ValueConversionsTest.java From jdk8u-jdk with GNU General Public License v2.0 | 6 votes |
|
@Test
public void testBox() throws Throwable {
for (Wrapper w : Wrapper.values()) {
if (w == Wrapper.VOID) continue; // skip this; no unboxed form
if (w == Wrapper.OBJECT) continue; // skip this; already unboxed
for (int n = -5; n < 10; n++) {
Object box = w.wrap(n);
MethodHandle boxer = ValueConversions.boxExact(w);
Object expResult = box;
Object result = null;
switch (w) {
case INT: result = (Integer) boxer.invokeExact(/*int*/n); break;
case LONG: result = (Long) boxer.invokeExact((long)n); break;
case FLOAT: result = (Float) boxer.invokeExact((float)n); break;
case DOUBLE: result = (Double) boxer.invokeExact((double)n); break;
case CHAR: result = (Character) boxer.invokeExact((char)n); break;
case BYTE: result = (Byte) boxer.invokeExact((byte)n); break;
case SHORT: result = (Short) boxer.invokeExact((short)n); break;
case BOOLEAN: result = (Boolean) boxer.invokeExact((n & 1) != 0); break;
}
assertEquals("(dst,src,n,box)="+Arrays.asList(w,w,n,box),
expResult, result);
}
}
}
Example #15
| Source File: BoundMethodHandle.java From jdk1.8-source-analysis with Apache License 2.0 | 6 votes |
|
static BoundMethodHandle bindSingle(MethodType type, LambdaForm form, BasicType xtype, Object x) {
// for some type signatures, there exist pre-defined concrete BMH classes
try {
switch (xtype) {
case L_TYPE:
return bindSingle(type, form, x); // Use known fast path.
case I_TYPE:
return (BoundMethodHandle) SpeciesData.EMPTY.extendWith(I_TYPE).constructor().invokeBasic(type, form, ValueConversions.widenSubword(x));
case J_TYPE:
return (BoundMethodHandle) SpeciesData.EMPTY.extendWith(J_TYPE).constructor().invokeBasic(type, form, (long) x);
case F_TYPE:
return (BoundMethodHandle) SpeciesData.EMPTY.extendWith(F_TYPE).constructor().invokeBasic(type, form, (float) x);
case D_TYPE:
return (BoundMethodHandle) SpeciesData.EMPTY.extendWith(D_TYPE).constructor().invokeBasic(type, form, (double) x);
default : throw newInternalError("unexpected xtype: " + xtype);
}
} catch (Throwable t) {
throw newInternalError(t);
}
}
Example #16
| Source File: ValueConversionsTest.java From openjdk-jdk8u-backup with GNU General Public License v2.0 | 6 votes |
|
@Test
public void testCast() throws Throwable {
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().bindTo(dst);
assertEquals(caster.type(), MethodHandles.identity(Object.class).type());
for (Object obj : objects) {
Class<?> src = obj.getClass();
boolean canCast = dst.isAssignableFrom(src);
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;
}
}
}
}
Example #17
| Source File: BoundMethodHandle.java From openjdk-jdk8u-backup with GNU General Public License v2.0 | 6 votes |
|
static BoundMethodHandle bindSingle(MethodType type, LambdaForm form, BasicType xtype, Object x) {
// for some type signatures, there exist pre-defined concrete BMH classes
try {
switch (xtype) {
case L_TYPE:
return bindSingle(type, form, x); // Use known fast path.
case I_TYPE:
return (BoundMethodHandle) SpeciesData.EMPTY.extendWith(I_TYPE).constructor().invokeBasic(type, form, ValueConversions.widenSubword(x));
case J_TYPE:
return (BoundMethodHandle) SpeciesData.EMPTY.extendWith(J_TYPE).constructor().invokeBasic(type, form, (long) x);
case F_TYPE:
return (BoundMethodHandle) SpeciesData.EMPTY.extendWith(F_TYPE).constructor().invokeBasic(type, form, (float) x);
case D_TYPE:
return (BoundMethodHandle) SpeciesData.EMPTY.extendWith(D_TYPE).constructor().invokeBasic(type, form, (double) x);
default : throw newInternalError("unexpected xtype: " + xtype);
}
} catch (Throwable t) {
throw newInternalError(t);
}
}
Example #18
| Source File: BoundMethodHandle.java From Bytecoder with Apache License 2.0 | 6 votes |
|
static BoundMethodHandle bindSingle(MethodType type, LambdaForm form, BasicType xtype, Object x) {
// for some type signatures, there exist pre-defined concrete BMH classes
try {
switch (xtype) {
case L_TYPE:
return bindSingle(type, form, x); // Use known fast path.
case I_TYPE:
return (BoundMethodHandle) SPECIALIZER.topSpecies().extendWith(I_TYPE_NUM).factory().invokeBasic(type, form, ValueConversions.widenSubword(x));
case J_TYPE:
return (BoundMethodHandle) SPECIALIZER.topSpecies().extendWith(J_TYPE_NUM).factory().invokeBasic(type, form, (long) x);
case F_TYPE:
return (BoundMethodHandle) SPECIALIZER.topSpecies().extendWith(F_TYPE_NUM).factory().invokeBasic(type, form, (float) x);
case D_TYPE:
return (BoundMethodHandle) SPECIALIZER.topSpecies().extendWith(D_TYPE_NUM).factory().invokeBasic(type, form, (double) x);
default : throw newInternalError("unexpected xtype: " + xtype);
}
} catch (Throwable t) {
throw uncaughtException(t);
}
}
Example #19
| Source File: ValueConversionsTest.java From openjdk-jdk8u with GNU General Public License v2.0 | 6 votes |
|
@Test
public void testBox() throws Throwable {
for (Wrapper w : Wrapper.values()) {
if (w == Wrapper.VOID) continue; // skip this; no unboxed form
if (w == Wrapper.OBJECT) continue; // skip this; already unboxed
for (int n = -5; n < 10; n++) {
Object box = w.wrap(n);
MethodHandle boxer = ValueConversions.boxExact(w);
Object expResult = box;
Object result = null;
switch (w) {
case INT: result = (Integer) boxer.invokeExact(/*int*/n); break;
case LONG: result = (Long) boxer.invokeExact((long)n); break;
case FLOAT: result = (Float) boxer.invokeExact((float)n); break;
case DOUBLE: result = (Double) boxer.invokeExact((double)n); break;
case CHAR: result = (Character) boxer.invokeExact((char)n); break;
case BYTE: result = (Byte) boxer.invokeExact((byte)n); break;
case SHORT: result = (Short) boxer.invokeExact((short)n); break;
case BOOLEAN: result = (Boolean) boxer.invokeExact((n & 1) != 0); break;
}
assertEquals("(dst,src,n,box)="+Arrays.asList(w,w,n,box),
expResult, result);
}
}
}
Example #20
| Source File: BoundMethodHandle.java From jdk-1.7-annotated with Apache License 2.0 | 6 votes |
|
static MethodHandle bindSingle(MethodType type, LambdaForm form, char xtype, Object x) {
// for some type signatures, there exist pre-defined concrete BMH classes
try {
switch (xtype) {
case 'L':
if (true) return bindSingle(type, form, x); // Use known fast path.
return (BoundMethodHandle) SpeciesData.EMPTY.extendWithType('L').constructor[0].invokeBasic(type, form, x);
case 'I':
return (BoundMethodHandle) SpeciesData.EMPTY.extendWithType('I').constructor[0].invokeBasic(type, form, ValueConversions.widenSubword(x));
case 'J':
return (BoundMethodHandle) SpeciesData.EMPTY.extendWithType('J').constructor[0].invokeBasic(type, form, (long) x);
case 'F':
return (BoundMethodHandle) SpeciesData.EMPTY.extendWithType('F').constructor[0].invokeBasic(type, form, (float) x);
case 'D':
return (BoundMethodHandle) SpeciesData.EMPTY.extendWithType('D').constructor[0].invokeBasic(type, form, (double) x);
default : throw new InternalError("unexpected xtype: " + xtype);
}
} catch (Throwable t) {
throw newInternalError(t);
}
}
Example #21
| Source File: ValueConversionsTest.java From openjdk-jdk9 with GNU General Public License v2.0 | 6 votes |
|
@Test
public void testBox() throws Throwable {
for (Wrapper w : Wrapper.values()) {
if (w == Wrapper.VOID) continue; // skip this; no unboxed form
if (w == Wrapper.OBJECT) continue; // skip this; already unboxed
for (int n = -5; n < 10; n++) {
Object box = w.wrap(n);
MethodHandle boxer = ValueConversions.boxExact(w);
Object expResult = box;
Object result = null;
switch (w) {
case INT: result = (Integer) boxer.invokeExact(/*int*/n); break;
case LONG: result = (Long) boxer.invokeExact((long)n); break;
case FLOAT: result = (Float) boxer.invokeExact((float)n); break;
case DOUBLE: result = (Double) boxer.invokeExact((double)n); break;
case CHAR: result = (Character) boxer.invokeExact((char)n); break;
case BYTE: result = (Byte) boxer.invokeExact((byte)n); break;
case SHORT: result = (Short) boxer.invokeExact((short)n); break;
case BOOLEAN: result = (Boolean) boxer.invokeExact((n & 1) != 0); break;
}
assertEquals("(dst,src,n,box)="+Arrays.asList(w,w,n,box),
expResult, result);
}
}
}
Example #22
| Source File: BoundMethodHandle.java From openjdk-jdk8u with GNU General Public License v2.0 | 6 votes |
|
static BoundMethodHandle bindSingle(MethodType type, LambdaForm form, BasicType xtype, Object x) {
// for some type signatures, there exist pre-defined concrete BMH classes
try {
switch (xtype) {
case L_TYPE:
return bindSingle(type, form, x); // Use known fast path.
case I_TYPE:
return (BoundMethodHandle) SpeciesData.EMPTY.extendWith(I_TYPE).constructor().invokeBasic(type, form, ValueConversions.widenSubword(x));
case J_TYPE:
return (BoundMethodHandle) SpeciesData.EMPTY.extendWith(J_TYPE).constructor().invokeBasic(type, form, (long) x);
case F_TYPE:
return (BoundMethodHandle) SpeciesData.EMPTY.extendWith(F_TYPE).constructor().invokeBasic(type, form, (float) x);
case D_TYPE:
return (BoundMethodHandle) SpeciesData.EMPTY.extendWith(D_TYPE).constructor().invokeBasic(type, form, (double) x);
default : throw newInternalError("unexpected xtype: " + xtype);
}
} catch (Throwable t) {
throw newInternalError(t);
}
}
Example #23
| Source File: ValueConversionsTest.java From openjdk-jdk9 with GNU General Public License v2.0 | 6 votes |
|
@Test
public void testCast() throws Throwable {
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().bindTo(dst);
assertEquals(caster.type(), MethodHandles.identity(Object.class).type());
for (Object obj : objects) {
Class<?> src = obj.getClass();
boolean canCast = dst.isAssignableFrom(src);
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;
}
}
}
}
Example #24
| Source File: ValueConversionsTest.java From jdk8u-jdk with GNU General Public License v2.0 | 6 votes |
|
@Test
public void testBox() throws Throwable {
for (Wrapper w : Wrapper.values()) {
if (w == Wrapper.VOID) continue; // skip this; no unboxed form
if (w == Wrapper.OBJECT) continue; // skip this; already unboxed
for (int n = -5; n < 10; n++) {
Object box = w.wrap(n);
MethodHandle boxer = ValueConversions.boxExact(w);
Object expResult = box;
Object result = null;
switch (w) {
case INT: result = (Integer) boxer.invokeExact(/*int*/n); break;
case LONG: result = (Long) boxer.invokeExact((long)n); break;
case FLOAT: result = (Float) boxer.invokeExact((float)n); break;
case DOUBLE: result = (Double) boxer.invokeExact((double)n); break;
case CHAR: result = (Character) boxer.invokeExact((char)n); break;
case BYTE: result = (Byte) boxer.invokeExact((byte)n); break;
case SHORT: result = (Short) boxer.invokeExact((short)n); break;
case BOOLEAN: result = (Boolean) boxer.invokeExact((n & 1) != 0); break;
}
assertEquals("(dst,src,n,box)="+Arrays.asList(w,w,n,box),
expResult, result);
}
}
}
Example #25
| Source File: BoundMethodHandle.java From jdk8u-jdk with GNU General Public License v2.0 | 6 votes |
|
static BoundMethodHandle bindSingle(MethodType type, LambdaForm form, BasicType xtype, Object x) {
// for some type signatures, there exist pre-defined concrete BMH classes
try {
switch (xtype) {
case L_TYPE:
return bindSingle(type, form, x); // Use known fast path.
case I_TYPE:
return (BoundMethodHandle) SpeciesData.EMPTY.extendWith(I_TYPE).constructor().invokeBasic(type, form, ValueConversions.widenSubword(x));
case J_TYPE:
return (BoundMethodHandle) SpeciesData.EMPTY.extendWith(J_TYPE).constructor().invokeBasic(type, form, (long) x);
case F_TYPE:
return (BoundMethodHandle) SpeciesData.EMPTY.extendWith(F_TYPE).constructor().invokeBasic(type, form, (float) x);
case D_TYPE:
return (BoundMethodHandle) SpeciesData.EMPTY.extendWith(D_TYPE).constructor().invokeBasic(type, form, (double) x);
default : throw newInternalError("unexpected xtype: " + xtype);
}
} catch (Throwable t) {
throw newInternalError(t);
}
}
Example #26
| Source File: ValueConversionsTest.java From jdk8u-jdk with GNU General Public License v2.0 | 6 votes |
|
@Test
public void testCast() throws Throwable {
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().bindTo(dst);
assertEquals(caster.type(), MethodHandles.identity(Object.class).type());
for (Object obj : objects) {
Class<?> src = obj.getClass();
boolean canCast = dst.isAssignableFrom(src);
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;
}
}
}
}
Example #27
| Source File: MethodHandleImpl.java From jdk1.8-source-analysis with Apache License 2.0 | 5 votes |
|
static
MethodHandle makeGuardWithCatch(MethodHandle target,
Class<? extends Throwable> exType,
MethodHandle catcher) {
MethodType type = target.type();
LambdaForm form = makeGuardWithCatchForm(type.basicType());
// Prepare auxiliary method handles used during LambdaForm interpreation.
// Box arguments and wrap them into Object[]: ValueConversions.array().
MethodType varargsType = type.changeReturnType(Object[].class);
MethodHandle collectArgs = varargsArray(type.parameterCount()).asType(varargsType);
// Result unboxing: ValueConversions.unbox() OR ValueConversions.identity() OR ValueConversions.ignore().
MethodHandle unboxResult;
Class<?> rtype = type.returnType();
if (rtype.isPrimitive()) {
if (rtype == void.class) {
unboxResult = ValueConversions.ignore();
} else {
Wrapper w = Wrapper.forPrimitiveType(type.returnType());
unboxResult = ValueConversions.unboxExact(w);
}
} else {
unboxResult = MethodHandles.identity(Object.class);
}
BoundMethodHandle.SpeciesData data = BoundMethodHandle.speciesData_LLLLL();
BoundMethodHandle mh;
try {
mh = (BoundMethodHandle)
data.constructor().invokeBasic(type, form, (Object) target, (Object) exType, (Object) catcher,
(Object) collectArgs, (Object) unboxResult);
} catch (Throwable ex) {
throw uncaughtException(ex);
}
assert(mh.type() == type);
return mh;
}
Example #28
| Source File: DirectMethodHandle.java From openjdk-jdk9 with GNU General Public License v2.0 | 5 votes |
|
static
boolean shouldBeInitialized(MemberName member) {
switch (member.getReferenceKind()) {
case REF_invokeStatic:
case REF_getStatic:
case REF_putStatic:
case REF_newInvokeSpecial:
break;
default:
// No need to initialize the class on this kind of member.
return false;
}
Class<?> cls = member.getDeclaringClass();
if (cls == ValueConversions.class ||
cls == MethodHandleImpl.class ||
cls == Invokers.class) {
// These guys have lots of <clinit> DMH creation but we know
// the MHs will not be used until the system is booted.
return false;
}
if (VerifyAccess.isSamePackage(MethodHandle.class, cls) ||
VerifyAccess.isSamePackage(ValueConversions.class, cls)) {
// It is a system class. It is probably in the process of
// being initialized, but we will help it along just to be safe.
if (UNSAFE.shouldBeInitialized(cls)) {
UNSAFE.ensureClassInitialized(cls);
}
return false;
}
return UNSAFE.shouldBeInitialized(cls);
}
Example #29
| Source File: ValueConversionsTest.java From openjdk-jdk8u-backup with GNU General Public License v2.0 | 5 votes |
|
static void testConvert(Wrapper src, Wrapper dst, long tval) throws Throwable {
if (dst == Wrapper.OBJECT || src == Wrapper.OBJECT) return; // must have prims
if (dst == Wrapper.VOID || src == Wrapper.VOID ) return; // must have values
boolean testSingleCase = (tval != 0);
final long tvalInit = tval;
MethodHandle conv = ValueConversions.convertPrimitive(src, dst);
MethodType convType = MethodType.methodType(dst.primitiveType(), src.primitiveType());
assertEquals(convType, conv.type());
MethodHandle converter = conv.asType(conv.type().changeReturnType(Object.class));
for (;;) {
long n = tval;
Object testValue = src.wrap(n);
Object expResult = dst.cast(testValue, dst.primitiveType());
Object result;
switch (src) {
case INT: result = converter.invokeExact((int)n); break;
case LONG: result = converter.invokeExact(/*long*/n); break;
case FLOAT: result = converter.invokeExact((float)n); break;
case DOUBLE: result = converter.invokeExact((double)n); break;
case CHAR: result = converter.invokeExact((char)n); break;
case BYTE: result = converter.invokeExact((byte)n); break;
case SHORT: result = converter.invokeExact((short)n); break;
case BOOLEAN: result = converter.invokeExact((n & 1) != 0); break;
default: throw new AssertionError();
}
assertEquals("(src,dst,n,testValue)="+Arrays.asList(src,dst,"0x"+Long.toHexString(n),testValue),
expResult, result);
if (testSingleCase) break;
// next test value:
tval = nextTestValue(tval);
if (tval == tvalInit) break; // repeat
}
}
Example #30
| Source File: ValueConversionsTest.java From openjdk-8-source with GNU General Public License v2.0 | 5 votes |
|
@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);
}
}
}
