Examples with VarHandleDesc java.lang.invoke.VarHandle.VarHandleDesc used on opensource projects

Example 1 with VarHandleDesc

use of java.lang.invoke.VarHandle.VarHandleDesc in project openj9 by eclipse.

the class Test_VarHandle method describeConstableTestGeneral.

private void describeConstableTestGeneral(String testName, VarHandle handle) throws Throwable {
    VarHandleDesc desc = handle.describeConstable().orElseThrow();
    /*
		 * verify that descriptor can be resolved. Otherwise will throw
		 * ReflectiveOperationException
		 */
    VarHandle resolvedHandle = (VarHandle) desc.resolveConstantDesc(MethodHandles.lookup());
    logger.debug(testName + ": Descriptor of original class varType is: " + handle.varType().descriptorString());
    logger.debug(testName + ": Descriptor of VarHandleDesc varType is: " + resolvedHandle.varType().descriptorString());
    Assert.assertTrue(handle.varType().equals(resolvedHandle.varType()));
    Assert.assertTrue(handle.coordinateTypes().equals(resolvedHandle.coordinateTypes()));
}

Example 2 with VarHandleDesc

use of java.lang.invoke.VarHandle.VarHandleDesc in project openj9 by eclipse.

the class Test_VarHandleDesc method toStringTestGeneral.

/* generic test for toString() */
private void toStringTestGeneral(String testName, int test_type, VarHandle handle) {
    Optional<ClassDesc> descOptional = null;
    if (test_type == Jep334MHHelperImpl.array_test) {
        descOptional = handle.varType().arrayType().describeConstable();
    } else {
        descOptional = handle.varType().describeConstable();
    }
    if (!descOptional.isPresent()) {
        Assert.fail(testName + ": error with tests ClassDesc could not be generated.");
        return;
    }
    ClassDesc desc = descOptional.get();
    VarHandleDesc varDesc = null;
    String resultString = null;
    switch(test_type) {
        case Jep334MHHelperImpl.array_test:
            varDesc = VarHandleDesc.ofArray(desc);
            resultString = "VarHandleDesc[" + desc.displayName() + "[]]";
            break;
        case Jep334MHHelperImpl.instance_test:
            varDesc = VarHandleDesc.ofField(declaringClassDesc, desc.displayName(), desc);
            resultString = "VarHandleDesc[" + declaringClassDesc.displayName() + "." + varDesc.constantName() + ":" + varDesc.varType().displayName() + "]";
            break;
        case Jep334MHHelperImpl.static_test:
            varDesc = VarHandleDesc.ofStaticField(declaringClassDesc, desc.displayName(), desc);
            resultString = "VarHandleDesc[static " + declaringClassDesc.displayName() + "." + varDesc.constantName() + ":" + varDesc.varType().displayName() + "]";
            break;
        default:
            Assert.fail(testName + ": unsupported test type.");
    }
    String outputString = varDesc.toString();
    logger.debug(testName + ": toString output is: " + outputString + " and should be: " + resultString);
    Assert.assertTrue(outputString.equals(resultString));
}

Example 3 with VarHandleDesc

use of java.lang.invoke.VarHandle.VarHandleDesc in project openj9 by eclipse.

the class Test_VarHandleDesc method resolveConstantDescTestGeneric.

private void resolveConstantDescTestGeneric(String testName, VarHandle handle) throws Throwable {
    VarHandleDesc handleDesc = handle.describeConstable().orElseThrow();
    VarHandle resolvedHandle = handleDesc.resolveConstantDesc(MethodHandles.lookup());
    logger.debug(testName + " is running.");
    Assert.assertTrue(handle.varType().equals(resolvedHandle.varType()));
    Assert.assertTrue(handle.coordinateTypes().equals(resolvedHandle.coordinateTypes()));
}

Example 4 with VarHandleDesc

use of java.lang.invoke.VarHandle.VarHandleDesc in project openj9 by eclipse.

the class Test_VarHandleDesc method ofTestGeneral.

/* generic test for ofStaticField, ofField and ofArray */
private void ofTestGeneral(String testName, int test_type, VarHandle handle) {
    /* setup */
    Optional<ClassDesc> descOptional = null;
    if (test_type == Jep334MHHelperImpl.array_test) {
        descOptional = handle.varType().arrayType().describeConstable();
    } else {
        descOptional = handle.varType().describeConstable();
    }
    if (!descOptional.isPresent()) {
        Assert.fail(testName + ": error with tests ClassDesc could not be generated.");
        return;
    }
    ClassDesc desc = descOptional.get();
    /* call test method ofArray */
    VarHandleDesc varDesc = null;
    String originalDescriptor = null;
    switch(test_type) {
        case Jep334MHHelperImpl.array_test:
            varDesc = VarHandleDesc.ofArray(desc);
            originalDescriptor = desc.componentType().descriptorString();
            break;
        case Jep334MHHelperImpl.instance_test:
            varDesc = VarHandleDesc.ofField(declaringClassDesc, desc.displayName(), desc);
            originalDescriptor = desc.descriptorString();
            break;
        case Jep334MHHelperImpl.static_test:
            varDesc = VarHandleDesc.ofStaticField(declaringClassDesc, desc.displayName(), desc);
            originalDescriptor = desc.descriptorString();
            break;
        default:
            Assert.fail(testName + ": unsupported test type.");
    }
    /* verify that the array class is properly described */
    String newDescriptor = varDesc.varType().descriptorString();
    logger.debug(testName + ": Descriptor of original class is: " + originalDescriptor + " descriptor of VarHandleDesc is: " + newDescriptor);
    Assert.assertTrue(originalDescriptor.equals(newDescriptor));
}