Reference Xtext:DSL对属性的引用
比如说 我有这样一个语法:Reference Xtext:DSL对属性的引用,reference,grammar,dsl,xtext,Reference,Grammar,Dsl,Xtext,比如说 我有这样一个语法: Bundle: 'Bundle' name= ID '{' car+=Car+ service +=Service* '}' ; Car: 'Car' name=ID extra+=Extra* '}' ; Extra: name= ID '=' type=STRING ; Service: 'Service' att=STRING 'for' ref+=Ref
Bundle:
'Bundle'
name= ID '{'
car+=Car+
service +=Service*
'}'
;
Car:
'Car'
name=ID
extra+=Extra*
'}'
;
Extra:
name= ID '=' type=STRING
;
Service:
'Service' att=STRING 'for' ref+=Reference*
;
Reference:
//Ref to car oder Ref to Car.Extra
;
在我的模型中,我想创建一个服务
,比如:
Service "ServiceName" for car1
Service "ServiceName" for car2 (extra1 extra2)
如何解析对
汽车的附加的引用?这可以通过简单的交叉引用来完成
Service:
'Service' att=STRING 'for' car=[Car] ('(' extras+=[Extra]+ ')')?
;
和相应的作用域提供程序
package org.xtext.example.mydsl.scoping
import org.eclipse.emf.ecore.EReference
import org.eclipse.xtext.scoping.IScope
import org.eclipse.xtext.scoping.Scopes
import org.eclipse.xtext.scoping.impl.AbstractDeclarativeScopeProvider
import org.xtext.example.mydsl.myDsl.Service
class MyDslScopeProvider extends AbstractDeclarativeScopeProvider {
def IScope scope_Service_extras(Service ctx, EReference ref) {
return Scopes.scopeFor(ctx.car.extra)
}
}