BaseExpression:
  ( t='this' |
    res+=SuperExpression |
    t='true' |
    t='false' |
    t=FLOAT_LITERAL |
    t=INTEGER_LITERAL |
    t=BYTE_LITERAL |
    t=STRING_LITERAL |
    t='null' |
    ref=[Variable] |
    '(' res+=Expression ')' |
    res+=ObjectCreation 
  ) ( res+=MethodCallSuffix | res+=FieldSelectSuffix )*
;

MethodCallSuffix:
  '.' methodMixin=[MixinDeclaration] '.' methodName=[MethodDeclaration|FQN] list=ActualParameters
;

FieldSelectSuffix:
  '.' mixinName=[MixinDeclaration] '.' fieldName=[FieldDeclaration|FQN]
;

IScope scope_MethodCallSuffix_methodMixin(BaseExpression expr, EReference mixin) {
   ...
}
	
IScope scope_FieldSelectSuffix_mixinName(BaseExpression expr, EReference mixin) {
   ...
}