ClickHouse/dbms/include/DB/Parsers/formatAST.h
2016-06-07 11:23:15 +03:00

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#pragma once
#include <ostream>
#include <DB/Core/NamesAndTypes.h>
#include <DB/Parsers/IAST.h>
namespace DB
{
/** Берёт синтаксическое дерево и превращает его обратно в текст.
* В случае запроса INSERT, данные будут отсутствовать.
*/
inline void formatAST(const IAST & ast, std::ostream & s, size_t indent = 0, bool hilite = true, bool one_line = false)
{
IAST::FormatSettings settings(s, hilite, one_line);
ast.format(settings);
}
String formatColumnsForCreateQuery(NamesAndTypesList & columns);
inline std::ostream & operator<<(std::ostream & os, const IAST & ast) { return formatAST(ast, os, 0, false, true), os; }
inline std::ostream & operator<<(std::ostream & os, const ASTPtr & ast) { return formatAST(*ast, os, 0, false, true), os; }
}