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https://github.com/ClickHouse/ClickHouse.git
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57 lines
1.4 KiB
C++
57 lines
1.4 KiB
C++
#pragma once
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#include <Parsers/IAST.h>
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#include <Core/Types.h>
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namespace DB
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{
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/// Pair with name and value in lisp programming langugate style. It contain
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/// string as key, but value either can be literal or list of
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/// pairs.
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class ASTPair : public IAST
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{
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public:
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/// Name or key of pair
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String first;
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/// Value of pair, which can be also list of pairs
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ASTPtr second;
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/// Value is closed in brackets (HOST '127.0.0.1')
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bool second_with_brackets;
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public:
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ASTPair(bool second_with_brackets_)
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: second_with_brackets(second_with_brackets_)
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{
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}
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String getID(char delim) const override;
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ASTPtr clone() const override;
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void formatImpl(const FormatSettings & settings, FormatState & state, FormatStateStacked frame) const override;
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};
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/// Function with key-value arguments is a function which arguments consist of
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/// pairs (see above). For example:
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/// ->Pair with list of pairs as value<-
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/// SOURCE(USER 'clickhouse' PORT 9000 REPLICA(HOST '127.0.0.1' PRIORITY 1) TABLE 'some_table')
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class ASTFunctionWithKeyValueArguments : public IAST
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{
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public:
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/// Name of function
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String name;
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/// Expression list
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ASTPtr elements;
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public:
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String getID(char delim) const override;
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ASTPtr clone() const override;
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void formatImpl(const FormatSettings & settings, FormatState & state, FormatStateStacked frame) const override;
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};
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}
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