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46 lines
899 B
C++
46 lines
899 B
C++
#pragma once
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#include <DB/Parsers/IAST.h>
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namespace DB
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{
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/** Запрос с секцией FORMAT.
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*/
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class ASTQueryWithOutput : public IAST
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{
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public:
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ASTPtr format;
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ASTQueryWithOutput() = default;
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ASTQueryWithOutput(const StringRange range_) : IAST(range_) {}
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};
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/// Объявляет класс-наследник ASTQueryWithOutput с реализованными методами getID и clone.
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#define DEFINE_AST_QUERY_WITH_OUTPUT(Name, ID) \
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class Name : public ASTQueryWithOutput \
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{ \
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public: \
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Name() {} \
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Name(StringRange range_) : ASTQueryWithOutput(range_) {} \
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String getID() const override { return ID; }; \
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\
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ASTPtr clone() const override \
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{ \
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Name * res = new Name(*this); \
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ASTPtr ptr{res}; \
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res->children.clear(); \
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if (format) \
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{ \
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res->format = format->clone(); \
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res->children.push_back(res->format); \
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} \
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return ptr; \
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} \
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};
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}
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