void Transform_ConsolidateRenames::Visit_Expr_Rel_Rename(const ZRef<Expr_Rel_Rename>& iExpr)
{
string8 newName = iExpr->GetNew();
if (ZQ<string8> theQ = sQGetErase(fRename, newName))
newName = *theQ;
const string8 oldName = iExpr->GetOld();
sInsertMust(fRename, oldName, newName);
ZRef<Expr_Rel> newOp0 = this->Do(iExpr->GetOp0());
if (ZQ<string8> theQ = sQGet(fRename, oldName))
{
if (*theQ == newName)
{
if (newName != oldName)
newOp0 = sRename(newOp0, newName, oldName);
}
}
this->pSetResult(newOp0);
}
void Visitor_DoMakeWalker::Visit_Expr_Rel_Rename(const ZRef<RelationalAlgebra::Expr_Rel_Rename>& iExpr)
{
if (ZRef<Walker> op0 = this->Do(iExpr->GetOp0()))
this->pSetResult(new Walker_Rename(op0, iExpr->GetNew(), iExpr->GetOld()));
}