Add support for java 8 annotation targets TYPE_USE and TYPE_PARAMETER

[tsachev]

Java 8 adds two new targets for annotations.

• TYPE_USE - here are some examples

class MyData implements MyTypedInterface<@Limit(2) MyType> {}

new @Immutable Rock()

(@NonNull String) calculateValue()

void doSomething() throws @Critical IOException();

For all possible 16 type uses refer to https://docs.oracle.com/javase/specs/jls/se8/html/jls-4.html#jls-4.11

• TYPE_PARAMETER - is for declaring type parameters like

class MyClass<@NonNull T> {}

<@Immutable T> void process(T message);

[stale[bot]]

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[fdutton]

I have need for this but was able to work around the issue by creating a custom AbstractJType.

If there is interest in resolving this issue, I am willing to submit a pull-request.

However, I think it is likely this would be a breaking change for most of the API since a proper implementation requires separating the concept of type-usage from type-definition. For example, JPrimitiveType and JReferencedClass would no longer extend AbstractJType since they really represent usage of an existing type and not definitions of a new type.

[phax]

Yes, feel free to submit a PR - the next update will anyway a major version (4) :)