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#pragma once
#include <yql/essentials/core/sql_types/match_recognize.h>
#include "yql/essentials/ast/yql_expr.h"
namespace NYql::NMatchRecognize {
inline TRowPattern ConvertPattern(const TExprNode::TPtr& pattern, TExprContext &ctx, size_t nestingLevel = 0) {
YQL_ENSURE(nestingLevel <= MaxPatternNesting, "To big nesting level in the pattern");
TRowPattern result;
for (const auto& term: pattern->Children()) {
result.push_back(TRowPatternTerm{});
for (const auto& factor: term->Children()) {
YQL_ENSURE(factor->ChildrenSize() == 6, "Expect 6 args");
result.back().push_back(TRowPatternFactor{
factor->Child(0)->IsAtom() ?
TRowPatternPrimary(TString(factor->Child(0)->Content())) :
ConvertPattern(factor->Child(0), ctx, nestingLevel + 1),
FromString<ui64>(factor->Child(1)->Content()),
FromString<ui64>(factor->Child(2)->Content()),
FromString<bool>(factor->Child(3)->Content()),
FromString<bool>(factor->Child(4)->Content()),
FromString<bool>(factor->Child(5)->Content())
});
}
}
return result;
}
} //namespace NYql::NMatchRecognize
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