Hi all,
I've chosen a "protocol specification" pet-project to teach myself XText. After going through all the tutorials, I've added XBase to my (ridiculously simple 
) grammar that looks like this:
grammar org.xtext.example.mydsl.MyDsl with org.eclipse.xtext.xbase.Xbase
generate myDsl "http://www.xtext.org/example/mydsl/MyDsl"
ProtocolDeclaration:
'protocol' name=QualifiedName
'specification' '{'
messages+=MessageDeclaration+
'}';
MessageDeclaration:
'message' name=ValidID '{'
fields+=FieldDeclaration+
'}';
FieldDeclaration:
// name=ValidID ':' type=JvmTypeReference; // this works for java types
name=ValidID ':' type=FieldType; // but I want my own names (below)
FieldType:
// my very own type names, should transform into existing classes:
'TypeA' | // --> my.existing.TypeNamedX
'TypeB' // --> my.other.existing.TypeNamedY
;
My next baby step is to generate Java code from the above updated grammar using my the generated MyDslJvmModelInferrer, which I (boldly 
) started writing as follows:
def dispatch void infer(MessageDeclaration element, IAcceptor<JvmDeclaredType> acceptor, boolean isPrelinkingPhase) {
acceptor.accept(element.toClass(element.name) [
documentation = element.documentation
for (field : element.fields) {
// field.toField(field.name, field.type) [
field.toField(field.name, [WHAT_CAN_I_DO_HERE?]) [
makePublic
]
}
])
}
...but I've no idea what to provide create the field type reference to my actual classes. I'm looking for a way to do something like this:
var myTypeRef;
if (field.name == 'TypeA') {
myTypeRef = 'my.existing.TypeNamedX';
} else if (field.name == 'TypeB') {
myTypeRef = 'my.other.existing.TypeNamedY';
}
field.toField(field.name, myTypeRef) [
makePublic
])
] 
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