public IScope joinIfIndependent(IScope callerScope, IScope bodyScope) {
// locally defined mixin does not require any other action
boolean isLocallyDefined = bodyScope.seesLocalDataOf(callerScope);
if (isLocallyDefined) {
return bodyScope;
}
// join scopes
IScope result = ScopeFactory.createJoinedScopesView(callerScope, bodyScope);
return result;
}
public ScopeView joinIfIndependentAndPreserveContent(IScope callerScope, IScope bodyScope) {
// locally defined mixin does not require any other action
boolean isLocalImport = bodyScope.seesLocalDataOf(callerScope);
ScopeView result = null;
if (isLocalImport) {
// we need to copy the whole tree, because this runs inside referenced mixin scope
// snapshot and imported mixin needs to remember the scope as it is now
result = ScopeFactory.createJoinedScopesView(null, bodyScope);
} else {
// since this is non-local import, we need to join reference scope and imported mixins scope
// imported mixin needs to have access to variables defined in caller
result = ScopeFactory.createJoinedScopesView(callerScope, bodyScope);
}
result.saveLocalDataForTheWholeWayUp();
return result;
}