| Referring to user-defined variables from Xbase expressions [message #1038150] |
Wed, 10 April 2013 09:17  |
Eclipse User |
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Hi all,
In my DSL I use Xbase expressions, and I would like to refer from within the expressions to other variables defined in the DSL. For example:
mydsl {
condition c1 = false, c2 = true;
requires c1 && c2;
}
Note that c1 and c2 are NOT Xbase variables, they are defined using a native grammar. The grammar of the requires clause is defined as follows:
Requires:
'requires' expression = XOrExpression ';'
;
I tried to to somehow modify MyDslScopeProvider but without success -- I still get
"Couldn't resolve reference to JvmIdentifiableElement 'c1'" errors.
Thanks in advance,
Oren
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| Re: Referring to user-defined variables from Xbase expressions [message #1038293 is a reply to message #1038150] |
Wed, 10 April 2013 13:31  |
| Eclipse User |
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Hi,
this is usually done via JvmModelInferrer.
here an example
Model:
vars+=Var*
expression = XOrExpression
;
Var:
"var" name=ID
;
class MyDslJvmModelInferrer extends AbstractModelInferrer {
/**
* convenience API to build and initialize JVM types and their members.
*/
@Inject extension JvmTypesBuilder
def dispatch void infer(Model element, IJvmDeclaredTypeAcceptor acceptor, boolean isPreIndexingPhase) {
acceptor.accept(element.toClass("my.company.greeting.MyGreetings"))
.initializeLater([
for (v : element.vars) {
members += v.toField(v.name, v.newTypeRef(Boolean::TYPE))
}
members += element.toMethod("xxxx", element.newTypeRef(Boolean::TYPE)) [
body = element.expression
]
])
}
}
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