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Inferring multiple classes for one model element with type parameters [message #1053360] Sat, 04 May 2013 12:37
Filip Krikava is currently offline Filip KrikavaFriend
Messages: 45
Registered: January 2012

I try to define a DSL that looks like:

processor P<T,R> {

  in port input: T
  out port output: R


I infer the JVM model based on the domain model and for each of the processor I create two classes:

class P1<T,R> {
  public Port<T> input;
  public Port<R> output;

class P2<T,R> {
  public Port<T> input;
  public Port<R> output;

Each class (JvmDeclaredType) associates the type parameters using the cloneWithProxies:

for (p: element.getTypeParameters()) {

Now I'm wondering how to create correctly the fields. If I use:

for (port: element.getPorts()) {
  JvmTypeReference jvmType = builder.newTypeRef(port, Port.class, port.getType())
  clazz.getMembers().add(builder.toField(port, port.getName(), jvmType)

Xtext correctly associates the first one, but of the second class (that is generated after the first one) I get:
class P2<T,R> {
  public Port<?> input;
  public Port<?> output;

I have not figure our how can I re-associate the type parameters when generating the second class.
What is the right way for handling the type parameters across multiple classes?

Thanks a lot!
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