Java Code Examples for java.lang.invoke.MethodHandles.Lookup#lookupClass()

The following examples show how to use java.lang.invoke.MethodHandles.Lookup#lookupClass() . 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: AbstractCallSiteDescriptor.java    From nashorn with GNU General Public License v2.0 5 votes vote down vote up 
private static boolean lookupsEqual(Lookup l1, Lookup l2) {
    if(l1 == l2) {
        return true;
    }
    if(l1.lookupClass() != l2.lookupClass()) {
        return false;
    }
    return l1.lookupModes() == l2.lookupModes();
}
Example 2
Source File: AbstractCallSiteDescriptor.java    From openjdk-8-source with GNU General Public License v2.0 5 votes vote down vote up 
private static boolean lookupsEqual(Lookup l1, Lookup l2) {
    if(l1 == l2) {
        return true;
    }
    if(l1.lookupClass() != l2.lookupClass()) {
        return false;
    }
    return l1.lookupModes() == l2.lookupModes();
}
Example 3
Source File: AbstractCallSiteDescriptor.java    From TencentKona-8 with GNU General Public License v2.0 5 votes vote down vote up 
private static boolean lookupsEqual(final Lookup l1, final Lookup l2) {
    if(l1 == l2) {
        return true;
    }
    if(l1.lookupClass() != l2.lookupClass()) {
        return false;
    }
    return l1.lookupModes() == l2.lookupModes();
}
Example 4
Source File: AbstractCallSiteDescriptor.java    From hottub with GNU General Public License v2.0 5 votes vote down vote up 
private static boolean lookupsEqual(final Lookup l1, final Lookup l2) {
    if(l1 == l2) {
        return true;
    }
    if(l1.lookupClass() != l2.lookupClass()) {
        return false;
    }
    return l1.lookupModes() == l2.lookupModes();
}
Example 5
Source File: IndyInterface.java    From groovy with Apache License 2.0 5 votes vote down vote up 
/**
 * backing bootstrap method with all parameters
 */
private static CallSite realBootstrap(Lookup caller, String name, int callID, MethodType type, boolean safe, boolean thisCall, boolean spreadCall) {
    // since indy does not give us the runtime types
    // we produce first a dummy call site, which then changes the target to one when INDY_OPTIMIZE_THRESHOLD is reached,
    // that does the method selection including the direct call to the
    // real method.
    CacheableCallSite mc = new CacheableCallSite(type);
    final Class<?> sender = caller.lookupClass();
    MethodHandle mh = makeAdapter(mc, sender, name, callID, type, safe, thisCall, spreadCall);
    mc.setTarget(mh);
    mc.setDefaultTarget(mh);
    mc.setFallbackTarget(makeFallBack(mc, sender, name, callID, type, safe, thisCall, spreadCall));

    return mc;
}
Example 6
Source File: AbstractCallSiteDescriptor.java    From jdk8u_nashorn with GNU General Public License v2.0 5 votes vote down vote up 
private static boolean lookupsEqual(final Lookup l1, final Lookup l2) {
    if(l1 == l2) {
        return true;
    }
    if(l1.lookupClass() != l2.lookupClass()) {
        return false;
    }
    return l1.lookupModes() == l2.lookupModes();
}
Example 7
Source File: DropLookupModeTest.java    From openjdk-jdk9 with GNU General Public License v2.0 5 votes vote down vote up 
/**
 * Starting with a full power Lookup, use dropLookupMode to create new Lookups
 * with reduced access.
 */
public void testReducingAccess() {
    Lookup lookup = MethodHandles.lookup();
    final Class<?> lc = lookup.lookupClass();
    assertTrue(lookup.lookupModes() == (PUBLIC|MODULE|PACKAGE|PROTECTED|PRIVATE));

    lookup = lookup.dropLookupMode(PROTECTED);
    assertTrue(lookup.lookupClass() == lc);
    assertTrue(lookup.lookupModes() == (PUBLIC|MODULE|PACKAGE|PRIVATE));

    lookup = lookup.dropLookupMode(PRIVATE);
    assertTrue(lookup.lookupClass() == lc);
    assertTrue(lookup.lookupModes() == (PUBLIC|MODULE|PACKAGE));

    lookup = lookup.dropLookupMode(PACKAGE);
    assertTrue(lookup.lookupClass() == lc);
    assertTrue(lookup.lookupModes() == (PUBLIC|MODULE));

    lookup = lookup.dropLookupMode(MODULE);
    assertTrue(lookup.lookupClass() == lc);
    assertTrue(lookup.lookupModes() == PUBLIC);

    lookup = lookup.dropLookupMode(PUBLIC);
    assertTrue(lookup.lookupClass() == lc);
    assertTrue(lookup.lookupModes() == 0);

    // repeat with lookup has no access
    lookup = lookup.dropLookupMode(PUBLIC);
    assertTrue(lookup.lookupClass() == lc);
    assertTrue(lookup.lookupModes() == 0);
}
Example 8
Source File: AbstractCallSiteDescriptor.java    From openjdk-jdk8u-backup with GNU General Public License v2.0 5 votes vote down vote up 
private static boolean lookupsEqual(final Lookup l1, final Lookup l2) {
    if(l1 == l2) {
        return true;
    }
    if(l1.lookupClass() != l2.lookupClass()) {
        return false;
    }
    return l1.lookupModes() == l2.lookupModes();
}
Example 9
Source File: MethodHandlesTest.java    From jdk8u-jdk with GNU General Public License v2.0 4 votes vote down vote up 
void testFindSpecial(boolean positive, Lookup lookup, Class<?> specialCaller,
                     Class<?> defc, Class<?> ret, String name, Class<?>... params) throws Throwable {
    countTest(positive);
    String methodName = name.substring(1 + name.indexOf('/'));  // foo/bar => foo
    MethodType type = MethodType.methodType(ret, params);
    Lookup specialLookup = maybeMoveIn(lookup, specialCaller);
    boolean specialAccessOK = (specialLookup.lookupClass() == specialCaller &&
                               (specialLookup.lookupModes() & Lookup.PRIVATE) != 0);
    MethodHandle target = null;
    Exception noAccess = null;
    try {
        if (verbosity >= 4)  System.out.println("lookup via "+lookup+" of "+defc+" "+name+type);
        if (verbosity >= 5)  System.out.println("  lookup => "+specialLookup);
        target = specialLookup.findSpecial(defc, methodName, type, specialCaller);
    } catch (ReflectiveOperationException ex) {
        noAccess = ex;
        assertExceptionClass(
            (!specialAccessOK)  // this check should happen first
            ?   IllegalAccessException.class
            : (name.contains("bogus") || INIT_REF_CAUSES_NSME && name.contains("<init>"))
            ?   NoSuchMethodException.class
            : IllegalAccessException.class,
            noAccess);
        if (verbosity >= 5)  ex.printStackTrace(System.out);
    }
    if (verbosity >= 3)
        System.out.println("findSpecial from "+specialCaller.getName()+" to "+defc.getName()+"."+name+"/"+type+" => "+target
                           +(target == null ? "" : target.type())
                           +(noAccess == null ? "" : " !! "+noAccess));
    if (positive && noAccess != null)  throw noAccess;
    assertEquals(positive ? "positive test" : "negative test erroneously passed", positive, target != null);
    if (!positive)  return; // negative test failed as expected
    assertEquals(specialCaller, target.type().parameterType(0));
    assertEquals(type,          target.type().dropParameterTypes(0,1));
    Class<?>[] paramsWithSelf = cat(array(Class[].class, (Class)specialCaller), params);
    MethodType typeWithSelf = MethodType.methodType(ret, paramsWithSelf);
    assertNameStringContains(target, methodName);
    Object[] args = randomArgs(paramsWithSelf);
    printCalled(target, name, args);
    target.invokeWithArguments(args);
    assertCalled(name, args);
}
Example 10
Source File: MethodHandlesTest.java    From jdk8u-dev-jdk with GNU General Public License v2.0 4 votes vote down vote up 
void testUnreflectMaybeSpecial(Class<?> specialCaller,
                               boolean positive, Lookup lookup,
                               Class<?> defc, Class<?> rcvc, Class<?> ret, String name, Class<?>... params) throws Throwable {
    countTest(positive);
    String methodName = name.substring(1 + name.indexOf('/'));  // foo/bar => foo
    MethodType type = MethodType.methodType(ret, params);
    Lookup specialLookup = (specialCaller != null ? maybeMoveIn(lookup, specialCaller) : null);
    boolean specialAccessOK = (specialCaller != null &&
                               specialLookup.lookupClass() == specialCaller &&
                               (specialLookup.lookupModes() & Lookup.PRIVATE) != 0);
    Method rmethod = defc.getDeclaredMethod(methodName, params);
    MethodHandle target = null;
    Exception noAccess = null;
    boolean isStatic = (rcvc == null);
    boolean isSpecial = (specialCaller != null);
    try {
        if (verbosity >= 4)  System.out.println("lookup via "+lookup+" of "+defc+" "+name+type);
        if (isSpecial)
            target = specialLookup.unreflectSpecial(rmethod, specialCaller);
        else
            target = maybeMoveIn(lookup, defc).unreflect(rmethod);
    } catch (ReflectiveOperationException ex) {
        noAccess = ex;
        assertExceptionClass(
            IllegalAccessException.class,  // NSME is impossible, since it was already reflected
            noAccess);
        if (verbosity >= 5)  ex.printStackTrace(System.out);
    }
    if (verbosity >= 3)
        System.out.println("unreflect"+(isSpecial?"Special":"")+" "+defc.getName()+"."+name+"/"+type
                           +(!isSpecial ? "" : " specialCaller="+specialCaller)
                           +( isStatic  ? "" : " receiver="+rcvc)
                           +" => "+target
                           +(noAccess == null ? "" : " !! "+noAccess));
    if (positive && noAccess != null)  throw noAccess;
    assertEquals(positive ? "positive test" : "negative test erroneously passed", positive, target != null);
    if (!positive)  return; // negative test failed as expected
    assertEquals(isStatic, Modifier.isStatic(rmethod.getModifiers()));
    Class<?>[] paramsMaybeWithSelf = params;
    if (!isStatic) {
        paramsMaybeWithSelf = cat(array(Class[].class, (Class)rcvc), params);
    }
    MethodType typeMaybeWithSelf = MethodType.methodType(ret, paramsMaybeWithSelf);
    if (isStatic) {
        assertEquals(typeMaybeWithSelf, target.type());
    } else {
        if (isSpecial)
            assertEquals(specialCaller, target.type().parameterType(0));
        else
            assertEquals(defc, target.type().parameterType(0));
        assertEquals(typeMaybeWithSelf, target.type().changeParameterType(0, rcvc));
    }
    Object[] argsMaybeWithSelf = randomArgs(paramsMaybeWithSelf);
    printCalled(target, name, argsMaybeWithSelf);
    target.invokeWithArguments(argsMaybeWithSelf);
    assertCalled(name, argsMaybeWithSelf);
    if (verbosity >= 1)
        System.out.print(':');
}
Example 11
Source File: MethodHandlesTest.java    From jdk8u_jdk with GNU General Public License v2.0 4 votes vote down vote up 
void testUnreflectMaybeSpecial(Class<?> specialCaller,
                               boolean positive, Lookup lookup,
                               Class<?> defc, Class<?> rcvc, Class<?> ret, String name, Class<?>... params) throws Throwable {
    countTest(positive);
    String methodName = name.substring(1 + name.indexOf('/'));  // foo/bar => foo
    MethodType type = MethodType.methodType(ret, params);
    Lookup specialLookup = (specialCaller != null ? maybeMoveIn(lookup, specialCaller) : null);
    boolean specialAccessOK = (specialCaller != null &&
                               specialLookup.lookupClass() == specialCaller &&
                               (specialLookup.lookupModes() & Lookup.PRIVATE) != 0);
    Method rmethod = defc.getDeclaredMethod(methodName, params);
    MethodHandle target = null;
    Exception noAccess = null;
    boolean isStatic = (rcvc == null);
    boolean isSpecial = (specialCaller != null);
    try {
        if (verbosity >= 4)  System.out.println("lookup via "+lookup+" of "+defc+" "+name+type);
        if (isSpecial)
            target = specialLookup.unreflectSpecial(rmethod, specialCaller);
        else
            target = maybeMoveIn(lookup, defc).unreflect(rmethod);
    } catch (ReflectiveOperationException ex) {
        noAccess = ex;
        assertExceptionClass(
            IllegalAccessException.class,  // NSME is impossible, since it was already reflected
            noAccess);
        if (verbosity >= 5)  ex.printStackTrace(System.out);
    }
    if (verbosity >= 3)
        System.out.println("unreflect"+(isSpecial?"Special":"")+" "+defc.getName()+"."+name+"/"+type
                           +(!isSpecial ? "" : " specialCaller="+specialCaller)
                           +( isStatic  ? "" : " receiver="+rcvc)
                           +" => "+target
                           +(noAccess == null ? "" : " !! "+noAccess));
    if (positive && noAccess != null)  throw noAccess;
    assertEquals(positive ? "positive test" : "negative test erroneously passed", positive, target != null);
    if (!positive)  return; // negative test failed as expected
    assertEquals(isStatic, Modifier.isStatic(rmethod.getModifiers()));
    Class<?>[] paramsMaybeWithSelf = params;
    if (!isStatic) {
        paramsMaybeWithSelf = cat(array(Class[].class, (Class)rcvc), params);
    }
    MethodType typeMaybeWithSelf = MethodType.methodType(ret, paramsMaybeWithSelf);
    if (isStatic) {
        assertEquals(typeMaybeWithSelf, target.type());
    } else {
        if (isSpecial)
            assertEquals(specialCaller, target.type().parameterType(0));
        else
            assertEquals(defc, target.type().parameterType(0));
        assertEquals(typeMaybeWithSelf, target.type().changeParameterType(0, rcvc));
    }
    Object[] argsMaybeWithSelf = randomArgs(paramsMaybeWithSelf);
    printCalled(target, name, argsMaybeWithSelf);
    target.invokeWithArguments(argsMaybeWithSelf);
    assertCalled(name, argsMaybeWithSelf);
    if (verbosity >= 1)
        System.out.print(':');
}
Example 12
Source File: MethodHandlesTest.java    From openjdk-8-source with GNU General Public License v2.0 4 votes vote down vote up 
void testUnreflectMaybeSpecial(Class<?> specialCaller,
                               boolean positive, Lookup lookup,
                               Class<?> defc, Class<?> rcvc, Class<?> ret, String name, Class<?>... params) throws Throwable {
    countTest(positive);
    String methodName = name.substring(1 + name.indexOf('/'));  // foo/bar => foo
    MethodType type = MethodType.methodType(ret, params);
    Lookup specialLookup = (specialCaller != null ? maybeMoveIn(lookup, specialCaller) : null);
    boolean specialAccessOK = (specialCaller != null &&
                               specialLookup.lookupClass() == specialCaller &&
                               (specialLookup.lookupModes() & Lookup.PRIVATE) != 0);
    Method rmethod = defc.getDeclaredMethod(methodName, params);
    MethodHandle target = null;
    Exception noAccess = null;
    boolean isStatic = (rcvc == null);
    boolean isSpecial = (specialCaller != null);
    try {
        if (verbosity >= 4)  System.out.println("lookup via "+lookup+" of "+defc+" "+name+type);
        if (isSpecial)
            target = specialLookup.unreflectSpecial(rmethod, specialCaller);
        else
            target = maybeMoveIn(lookup, defc).unreflect(rmethod);
    } catch (ReflectiveOperationException ex) {
        noAccess = ex;
        assertExceptionClass(
            IllegalAccessException.class,  // NSME is impossible, since it was already reflected
            noAccess);
        if (verbosity >= 5)  ex.printStackTrace(System.out);
    }
    if (verbosity >= 3)
        System.out.println("unreflect"+(isSpecial?"Special":"")+" "+defc.getName()+"."+name+"/"+type
                           +(!isSpecial ? "" : " specialCaller="+specialCaller)
                           +( isStatic  ? "" : " receiver="+rcvc)
                           +" => "+target
                           +(noAccess == null ? "" : " !! "+noAccess));
    if (positive && noAccess != null)  throw noAccess;
    assertEquals(positive ? "positive test" : "negative test erroneously passed", positive, target != null);
    if (!positive)  return; // negative test failed as expected
    assertEquals(isStatic, Modifier.isStatic(rmethod.getModifiers()));
    Class<?>[] paramsMaybeWithSelf = params;
    if (!isStatic) {
        paramsMaybeWithSelf = cat(array(Class[].class, (Class)rcvc), params);
    }
    MethodType typeMaybeWithSelf = MethodType.methodType(ret, paramsMaybeWithSelf);
    if (isStatic) {
        assertEquals(typeMaybeWithSelf, target.type());
    } else {
        if (isSpecial)
            assertEquals(specialCaller, target.type().parameterType(0));
        else
            assertEquals(defc, target.type().parameterType(0));
        assertEquals(typeMaybeWithSelf, target.type().changeParameterType(0, rcvc));
    }
    Object[] argsMaybeWithSelf = randomArgs(paramsMaybeWithSelf);
    printCalled(target, name, argsMaybeWithSelf);
    target.invokeWithArguments(argsMaybeWithSelf);
    assertCalled(name, argsMaybeWithSelf);
    if (verbosity >= 1)
        System.out.print(':');
}
Example 13
Source File: MethodHandlesTest.java    From openjdk-8-source with GNU General Public License v2.0 4 votes vote down vote up 
void testFindSpecial(boolean positive, Lookup lookup, Class<?> specialCaller,
                     Class<?> defc, Class<?> ret, String name, Class<?>... params) throws Throwable {
    countTest(positive);
    String methodName = name.substring(1 + name.indexOf('/'));  // foo/bar => foo
    MethodType type = MethodType.methodType(ret, params);
    Lookup specialLookup = maybeMoveIn(lookup, specialCaller);
    boolean specialAccessOK = (specialLookup.lookupClass() == specialCaller &&
                               (specialLookup.lookupModes() & Lookup.PRIVATE) != 0);
    MethodHandle target = null;
    Exception noAccess = null;
    try {
        if (verbosity >= 4)  System.out.println("lookup via "+lookup+" of "+defc+" "+name+type);
        if (verbosity >= 5)  System.out.println("  lookup => "+specialLookup);
        target = specialLookup.findSpecial(defc, methodName, type, specialCaller);
    } catch (ReflectiveOperationException ex) {
        noAccess = ex;
        assertExceptionClass(
            (!specialAccessOK)  // this check should happen first
            ?   IllegalAccessException.class
            : (name.contains("bogus") || INIT_REF_CAUSES_NSME && name.contains("<init>"))
            ?   NoSuchMethodException.class
            : IllegalAccessException.class,
            noAccess);
        if (verbosity >= 5)  ex.printStackTrace(System.out);
    }
    if (verbosity >= 3)
        System.out.println("findSpecial from "+specialCaller.getName()+" to "+defc.getName()+"."+name+"/"+type+" => "+target
                           +(target == null ? "" : target.type())
                           +(noAccess == null ? "" : " !! "+noAccess));
    if (positive && noAccess != null)  throw noAccess;
    assertEquals(positive ? "positive test" : "negative test erroneously passed", positive, target != null);
    if (!positive)  return; // negative test failed as expected
    assertEquals(specialCaller, target.type().parameterType(0));
    assertEquals(type,          target.type().dropParameterTypes(0,1));
    Class<?>[] paramsWithSelf = cat(array(Class[].class, (Class)specialCaller), params);
    MethodType typeWithSelf = MethodType.methodType(ret, paramsWithSelf);
    assertNameStringContains(target, methodName);
    Object[] args = randomArgs(paramsWithSelf);
    printCalled(target, name, args);
    target.invokeWithArguments(args);
    assertCalled(name, args);
}
Example 14
Source File: MethodHandlesTest.java    From openjdk-jdk8u-backup with GNU General Public License v2.0 4 votes vote down vote up 
void testUnreflectMaybeSpecial(Class<?> specialCaller,
                               boolean positive, Lookup lookup,
                               Class<?> defc, Class<?> rcvc, Class<?> ret, String name, Class<?>... params) throws Throwable {
    countTest(positive);
    String methodName = name.substring(1 + name.indexOf('/'));  // foo/bar => foo
    MethodType type = MethodType.methodType(ret, params);
    Lookup specialLookup = (specialCaller != null ? maybeMoveIn(lookup, specialCaller) : null);
    boolean specialAccessOK = (specialCaller != null &&
                               specialLookup.lookupClass() == specialCaller &&
                               (specialLookup.lookupModes() & Lookup.PRIVATE) != 0);
    Method rmethod = defc.getDeclaredMethod(methodName, params);
    MethodHandle target = null;
    Exception noAccess = null;
    boolean isStatic = (rcvc == null);
    boolean isSpecial = (specialCaller != null);
    try {
        if (verbosity >= 4)  System.out.println("lookup via "+lookup+" of "+defc+" "+name+type);
        if (isSpecial)
            target = specialLookup.unreflectSpecial(rmethod, specialCaller);
        else
            target = maybeMoveIn(lookup, defc).unreflect(rmethod);
    } catch (ReflectiveOperationException ex) {
        noAccess = ex;
        assertExceptionClass(
            IllegalAccessException.class,  // NSME is impossible, since it was already reflected
            noAccess);
        if (verbosity >= 5)  ex.printStackTrace(System.out);
    }
    if (verbosity >= 3)
        System.out.println("unreflect"+(isSpecial?"Special":"")+" "+defc.getName()+"."+name+"/"+type
                           +(!isSpecial ? "" : " specialCaller="+specialCaller)
                           +( isStatic  ? "" : " receiver="+rcvc)
                           +" => "+target
                           +(noAccess == null ? "" : " !! "+noAccess));
    if (positive && noAccess != null)  throw noAccess;
    assertEquals(positive ? "positive test" : "negative test erroneously passed", positive, target != null);
    if (!positive)  return; // negative test failed as expected
    assertEquals(isStatic, Modifier.isStatic(rmethod.getModifiers()));
    Class<?>[] paramsMaybeWithSelf = params;
    if (!isStatic) {
        paramsMaybeWithSelf = cat(array(Class[].class, (Class)rcvc), params);
    }
    MethodType typeMaybeWithSelf = MethodType.methodType(ret, paramsMaybeWithSelf);
    if (isStatic) {
        assertEquals(typeMaybeWithSelf, target.type());
    } else {
        if (isSpecial)
            assertEquals(specialCaller, target.type().parameterType(0));
        else
            assertEquals(defc, target.type().parameterType(0));
        assertEquals(typeMaybeWithSelf, target.type().changeParameterType(0, rcvc));
    }
    Object[] argsMaybeWithSelf = randomArgs(paramsMaybeWithSelf);
    printCalled(target, name, argsMaybeWithSelf);
    target.invokeWithArguments(argsMaybeWithSelf);
    assertCalled(name, argsMaybeWithSelf);
    if (verbosity >= 1)
        System.out.print(':');
}
Example 15
Source File: MethodHandlesTest.java    From jdk8u-dev-jdk with GNU General Public License v2.0 4 votes vote down vote up 
void testFindSpecial(boolean positive, Lookup lookup, Class<?> specialCaller,
                     Class<?> defc, Class<?> ret, String name, Class<?>... params) throws Throwable {
    countTest(positive);
    String methodName = name.substring(1 + name.indexOf('/'));  // foo/bar => foo
    MethodType type = MethodType.methodType(ret, params);
    Lookup specialLookup = maybeMoveIn(lookup, specialCaller);
    boolean specialAccessOK = (specialLookup.lookupClass() == specialCaller &&
                               (specialLookup.lookupModes() & Lookup.PRIVATE) != 0);
    MethodHandle target = null;
    Exception noAccess = null;
    try {
        if (verbosity >= 4)  System.out.println("lookup via "+lookup+" of "+defc+" "+name+type);
        if (verbosity >= 5)  System.out.println("  lookup => "+specialLookup);
        target = specialLookup.findSpecial(defc, methodName, type, specialCaller);
    } catch (ReflectiveOperationException ex) {
        noAccess = ex;
        assertExceptionClass(
            (!specialAccessOK)  // this check should happen first
            ?   IllegalAccessException.class
            : (name.contains("bogus") || INIT_REF_CAUSES_NSME && name.contains("<init>"))
            ?   NoSuchMethodException.class
            : IllegalAccessException.class,
            noAccess);
        if (verbosity >= 5)  ex.printStackTrace(System.out);
    }
    if (verbosity >= 3)
        System.out.println("findSpecial from "+specialCaller.getName()+" to "+defc.getName()+"."+name+"/"+type+" => "+target
                           +(target == null ? "" : target.type())
                           +(noAccess == null ? "" : " !! "+noAccess));
    if (positive && noAccess != null)  throw noAccess;
    assertEquals(positive ? "positive test" : "negative test erroneously passed", positive, target != null);
    if (!positive)  return; // negative test failed as expected
    assertEquals(specialCaller, target.type().parameterType(0));
    assertEquals(type,          target.type().dropParameterTypes(0,1));
    Class<?>[] paramsWithSelf = cat(array(Class[].class, (Class)specialCaller), params);
    MethodType typeWithSelf = MethodType.methodType(ret, paramsWithSelf);
    assertNameStringContains(target, methodName);
    Object[] args = randomArgs(paramsWithSelf);
    printCalled(target, name, args);
    target.invokeWithArguments(args);
    assertCalled(name, args);
}
Example 16
Source File: MethodHandlesTest.java    From openjdk-8 with GNU General Public License v2.0 4 votes vote down vote up 
void testUnreflectMaybeSpecial(Class<?> specialCaller,
                               boolean positive, Lookup lookup,
                               Class<?> defc, Class<?> rcvc, Class<?> ret, String name, Class<?>... params) throws Throwable {
    countTest(positive);
    String methodName = name.substring(1 + name.indexOf('/'));  // foo/bar => foo
    MethodType type = MethodType.methodType(ret, params);
    Lookup specialLookup = (specialCaller != null ? maybeMoveIn(lookup, specialCaller) : null);
    boolean specialAccessOK = (specialCaller != null &&
                               specialLookup.lookupClass() == specialCaller &&
                               (specialLookup.lookupModes() & Lookup.PRIVATE) != 0);
    Method rmethod = defc.getDeclaredMethod(methodName, params);
    MethodHandle target = null;
    Exception noAccess = null;
    boolean isStatic = (rcvc == null);
    boolean isSpecial = (specialCaller != null);
    try {
        if (verbosity >= 4)  System.out.println("lookup via "+lookup+" of "+defc+" "+name+type);
        if (isSpecial)
            target = specialLookup.unreflectSpecial(rmethod, specialCaller);
        else
            target = maybeMoveIn(lookup, defc).unreflect(rmethod);
    } catch (ReflectiveOperationException ex) {
        noAccess = ex;
        assertExceptionClass(
            IllegalAccessException.class,  // NSME is impossible, since it was already reflected
            noAccess);
        if (verbosity >= 5)  ex.printStackTrace(System.out);
    }
    if (verbosity >= 3)
        System.out.println("unreflect"+(isSpecial?"Special":"")+" "+defc.getName()+"."+name+"/"+type
                           +(!isSpecial ? "" : " specialCaller="+specialCaller)
                           +( isStatic  ? "" : " receiver="+rcvc)
                           +" => "+target
                           +(noAccess == null ? "" : " !! "+noAccess));
    if (positive && noAccess != null)  throw noAccess;
    assertEquals(positive ? "positive test" : "negative test erroneously passed", positive, target != null);
    if (!positive)  return; // negative test failed as expected
    assertEquals(isStatic, Modifier.isStatic(rmethod.getModifiers()));
    Class<?>[] paramsMaybeWithSelf = params;
    if (!isStatic) {
        paramsMaybeWithSelf = cat(array(Class[].class, (Class)rcvc), params);
    }
    MethodType typeMaybeWithSelf = MethodType.methodType(ret, paramsMaybeWithSelf);
    if (isStatic) {
        assertEquals(typeMaybeWithSelf, target.type());
    } else {
        if (isSpecial)
            assertEquals(specialCaller, target.type().parameterType(0));
        else
            assertEquals(defc, target.type().parameterType(0));
        assertEquals(typeMaybeWithSelf, target.type().changeParameterType(0, rcvc));
    }
    Object[] argsMaybeWithSelf = randomArgs(paramsMaybeWithSelf);
    printCalled(target, name, argsMaybeWithSelf);
    target.invokeWithArguments(argsMaybeWithSelf);
    assertCalled(name, argsMaybeWithSelf);
    if (verbosity >= 1)
        System.out.print(':');
}
Example 17
Source File: MethodHandlesTest.java    From openjdk-jdk8u with GNU General Public License v2.0 4 votes vote down vote up 
void testUnreflectMaybeSpecial(Class<?> specialCaller,
                               boolean positive, Lookup lookup,
                               Class<?> defc, Class<?> rcvc, Class<?> ret, String name, Class<?>... params) throws Throwable {
    countTest(positive);
    String methodName = name.substring(1 + name.indexOf('/'));  // foo/bar => foo
    MethodType type = MethodType.methodType(ret, params);
    Lookup specialLookup = (specialCaller != null ? maybeMoveIn(lookup, specialCaller) : null);
    boolean specialAccessOK = (specialCaller != null &&
                               specialLookup.lookupClass() == specialCaller &&
                               (specialLookup.lookupModes() & Lookup.PRIVATE) != 0);
    Method rmethod = defc.getDeclaredMethod(methodName, params);
    MethodHandle target = null;
    Exception noAccess = null;
    boolean isStatic = (rcvc == null);
    boolean isSpecial = (specialCaller != null);
    try {
        if (verbosity >= 4)  System.out.println("lookup via "+lookup+" of "+defc+" "+name+type);
        if (isSpecial)
            target = specialLookup.unreflectSpecial(rmethod, specialCaller);
        else
            target = maybeMoveIn(lookup, defc).unreflect(rmethod);
    } catch (ReflectiveOperationException ex) {
        noAccess = ex;
        assertExceptionClass(
            IllegalAccessException.class,  // NSME is impossible, since it was already reflected
            noAccess);
        if (verbosity >= 5)  ex.printStackTrace(System.out);
    }
    if (verbosity >= 3)
        System.out.println("unreflect"+(isSpecial?"Special":"")+" "+defc.getName()+"."+name+"/"+type
                           +(!isSpecial ? "" : " specialCaller="+specialCaller)
                           +( isStatic  ? "" : " receiver="+rcvc)
                           +" => "+target
                           +(noAccess == null ? "" : " !! "+noAccess));
    if (positive && noAccess != null)  throw noAccess;
    assertEquals(positive ? "positive test" : "negative test erroneously passed", positive, target != null);
    if (!positive)  return; // negative test failed as expected
    assertEquals(isStatic, Modifier.isStatic(rmethod.getModifiers()));
    Class<?>[] paramsMaybeWithSelf = params;
    if (!isStatic) {
        paramsMaybeWithSelf = cat(array(Class[].class, (Class)rcvc), params);
    }
    MethodType typeMaybeWithSelf = MethodType.methodType(ret, paramsMaybeWithSelf);
    if (isStatic) {
        assertEquals(typeMaybeWithSelf, target.type());
    } else {
        if (isSpecial)
            assertEquals(specialCaller, target.type().parameterType(0));
        else
            assertEquals(defc, target.type().parameterType(0));
        assertEquals(typeMaybeWithSelf, target.type().changeParameterType(0, rcvc));
    }
    Object[] argsMaybeWithSelf = randomArgs(paramsMaybeWithSelf);
    printCalled(target, name, argsMaybeWithSelf);
    target.invokeWithArguments(argsMaybeWithSelf);
    assertCalled(name, argsMaybeWithSelf);
    if (verbosity >= 1)
        System.out.print(':');
}
Example 18
Source File: MethodHandlesTest.java    From jdk8u-jdk with GNU General Public License v2.0 4 votes vote down vote up 
void testFindSpecial(boolean positive, Lookup lookup, Class<?> specialCaller,
                     Class<?> defc, Class<?> ret, String name, Class<?>... params) throws Throwable {
    countTest(positive);
    String methodName = name.substring(1 + name.indexOf('/'));  // foo/bar => foo
    MethodType type = MethodType.methodType(ret, params);
    Lookup specialLookup = maybeMoveIn(lookup, specialCaller);
    boolean specialAccessOK = (specialLookup.lookupClass() == specialCaller &&
                               (specialLookup.lookupModes() & Lookup.PRIVATE) != 0);
    MethodHandle target = null;
    Exception noAccess = null;
    try {
        if (verbosity >= 4)  System.out.println("lookup via "+lookup+" of "+defc+" "+name+type);
        if (verbosity >= 5)  System.out.println("  lookup => "+specialLookup);
        target = specialLookup.findSpecial(defc, methodName, type, specialCaller);
    } catch (ReflectiveOperationException ex) {
        noAccess = ex;
        assertExceptionClass(
            (!specialAccessOK)  // this check should happen first
            ?   IllegalAccessException.class
            : (name.contains("bogus") || INIT_REF_CAUSES_NSME && name.contains("<init>"))
            ?   NoSuchMethodException.class
            : IllegalAccessException.class,
            noAccess);
        if (verbosity >= 5)  ex.printStackTrace(System.out);
    }
    if (verbosity >= 3)
        System.out.println("findSpecial from "+specialCaller.getName()+" to "+defc.getName()+"."+name+"/"+type+" => "+target
                           +(target == null ? "" : target.type())
                           +(noAccess == null ? "" : " !! "+noAccess));
    if (positive && noAccess != null)  throw noAccess;
    assertEquals(positive ? "positive test" : "negative test erroneously passed", positive, target != null);
    if (!positive)  return; // negative test failed as expected
    assertEquals(specialCaller, target.type().parameterType(0));
    assertEquals(type,          target.type().dropParameterTypes(0,1));
    Class<?>[] paramsWithSelf = cat(array(Class[].class, (Class)specialCaller), params);
    MethodType typeWithSelf = MethodType.methodType(ret, paramsWithSelf);
    assertNameStringContains(target, methodName);
    Object[] args = randomArgs(paramsWithSelf);
    printCalled(target, name, args);
    target.invokeWithArguments(args);
    assertCalled(name, args);
}
Example 19
Source File: MethodHandlesTest.java    From jdk8u60 with GNU General Public License v2.0 4 votes vote down vote up 
void testUnreflectMaybeSpecial(Class<?> specialCaller,
                               boolean positive, Lookup lookup,
                               Class<?> defc, Class<?> rcvc, Class<?> ret, String name, Class<?>... params) throws Throwable {
    countTest(positive);
    String methodName = name.substring(1 + name.indexOf('/'));  // foo/bar => foo
    MethodType type = MethodType.methodType(ret, params);
    Lookup specialLookup = (specialCaller != null ? maybeMoveIn(lookup, specialCaller) : null);
    boolean specialAccessOK = (specialCaller != null &&
                               specialLookup.lookupClass() == specialCaller &&
                               (specialLookup.lookupModes() & Lookup.PRIVATE) != 0);
    Method rmethod = defc.getDeclaredMethod(methodName, params);
    MethodHandle target = null;
    Exception noAccess = null;
    boolean isStatic = (rcvc == null);
    boolean isSpecial = (specialCaller != null);
    try {
        if (verbosity >= 4)  System.out.println("lookup via "+lookup+" of "+defc+" "+name+type);
        if (isSpecial)
            target = specialLookup.unreflectSpecial(rmethod, specialCaller);
        else
            target = maybeMoveIn(lookup, defc).unreflect(rmethod);
    } catch (ReflectiveOperationException ex) {
        noAccess = ex;
        assertExceptionClass(
            IllegalAccessException.class,  // NSME is impossible, since it was already reflected
            noAccess);
        if (verbosity >= 5)  ex.printStackTrace(System.out);
    }
    if (verbosity >= 3)
        System.out.println("unreflect"+(isSpecial?"Special":"")+" "+defc.getName()+"."+name+"/"+type
                           +(!isSpecial ? "" : " specialCaller="+specialCaller)
                           +( isStatic  ? "" : " receiver="+rcvc)
                           +" => "+target
                           +(noAccess == null ? "" : " !! "+noAccess));
    if (positive && noAccess != null)  throw noAccess;
    assertEquals(positive ? "positive test" : "negative test erroneously passed", positive, target != null);
    if (!positive)  return; // negative test failed as expected
    assertEquals(isStatic, Modifier.isStatic(rmethod.getModifiers()));
    Class<?>[] paramsMaybeWithSelf = params;
    if (!isStatic) {
        paramsMaybeWithSelf = cat(array(Class[].class, (Class)rcvc), params);
    }
    MethodType typeMaybeWithSelf = MethodType.methodType(ret, paramsMaybeWithSelf);
    if (isStatic) {
        assertEquals(typeMaybeWithSelf, target.type());
    } else {
        if (isSpecial)
            assertEquals(specialCaller, target.type().parameterType(0));
        else
            assertEquals(defc, target.type().parameterType(0));
        assertEquals(typeMaybeWithSelf, target.type().changeParameterType(0, rcvc));
    }
    Object[] argsMaybeWithSelf = randomArgs(paramsMaybeWithSelf);
    printCalled(target, name, argsMaybeWithSelf);
    target.invokeWithArguments(argsMaybeWithSelf);
    assertCalled(name, argsMaybeWithSelf);
    if (verbosity >= 1)
        System.out.print(':');
}
Example 20
Source File: MethodHandlesTest.java    From TencentKona-8 with GNU General Public License v2.0 4 votes vote down vote up 
void testUnreflectMaybeSpecial(Class<?> specialCaller,
                               boolean positive, Lookup lookup,
                               Class<?> defc, Class<?> rcvc, Class<?> ret, String name, Class<?>... params) throws Throwable {
    countTest(positive);
    String methodName = name.substring(1 + name.indexOf('/'));  // foo/bar => foo
    MethodType type = MethodType.methodType(ret, params);
    Lookup specialLookup = (specialCaller != null ? maybeMoveIn(lookup, specialCaller) : null);
    boolean specialAccessOK = (specialCaller != null &&
                               specialLookup.lookupClass() == specialCaller &&
                               (specialLookup.lookupModes() & Lookup.PRIVATE) != 0);
    Method rmethod = defc.getDeclaredMethod(methodName, params);
    MethodHandle target = null;
    Exception noAccess = null;
    boolean isStatic = (rcvc == null);
    boolean isSpecial = (specialCaller != null);
    try {
        if (verbosity >= 4)  System.out.println("lookup via "+lookup+" of "+defc+" "+name+type);
        if (isSpecial)
            target = specialLookup.unreflectSpecial(rmethod, specialCaller);
        else
            target = maybeMoveIn(lookup, defc).unreflect(rmethod);
    } catch (ReflectiveOperationException ex) {
        noAccess = ex;
        assertExceptionClass(
            IllegalAccessException.class,  // NSME is impossible, since it was already reflected
            noAccess);
        if (verbosity >= 5)  ex.printStackTrace(System.out);
    }
    if (verbosity >= 3)
        System.out.println("unreflect"+(isSpecial?"Special":"")+" "+defc.getName()+"."+name+"/"+type
                           +(!isSpecial ? "" : " specialCaller="+specialCaller)
                           +( isStatic  ? "" : " receiver="+rcvc)
                           +" => "+target
                           +(noAccess == null ? "" : " !! "+noAccess));
    if (positive && noAccess != null)  throw noAccess;
    assertEquals(positive ? "positive test" : "negative test erroneously passed", positive, target != null);
    if (!positive)  return; // negative test failed as expected
    assertEquals(isStatic, Modifier.isStatic(rmethod.getModifiers()));
    Class<?>[] paramsMaybeWithSelf = params;
    if (!isStatic) {
        paramsMaybeWithSelf = cat(array(Class[].class, (Class)rcvc), params);
    }
    MethodType typeMaybeWithSelf = MethodType.methodType(ret, paramsMaybeWithSelf);
    if (isStatic) {
        assertEquals(typeMaybeWithSelf, target.type());
    } else {
        if (isSpecial)
            assertEquals(specialCaller, target.type().parameterType(0));
        else
            assertEquals(defc, target.type().parameterType(0));
        assertEquals(typeMaybeWithSelf, target.type().changeParameterType(0, rcvc));
    }
    Object[] argsMaybeWithSelf = randomArgs(paramsMaybeWithSelf);
    printCalled(target, name, argsMaybeWithSelf);
    target.invokeWithArguments(argsMaybeWithSelf);
    assertCalled(name, argsMaybeWithSelf);
    if (verbosity >= 1)
        System.out.print(':');
}