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#pragma once
#include <yql/essentials/ast/yql_expr.h>
#include <util/generic/stack.h>
#include <util/generic/strbuf.h>
namespace NYql {
class TFunctionStack {
public:
void EnterFrame(const TExprNode& input, TExprContext& ctx);
void LeaveFrame(const TExprNode& input, TExprContext& ctx);
void Reset();
void MarkUsed();
private:
TStack<std::pair<TStringBuf, bool>> CurrentFunctions_;
};
}
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