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65 lines
1.3 KiB
C++
65 lines
1.3 KiB
C++
#pragma once
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#include <DB/Parsers/IParserBase.h>
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#include <DB/Parsers/CommonParsers.h>
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#include <DB/Parsers/ExpressionElementParsers.h>
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#include <DB/Parsers/ASTIdentifier.h>
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#include <DB/Parsers/ASTShowProcesslistQuery.h>
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namespace DB
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{
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/** Запрос SHOW PROCESSLIST
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*/
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class ParserShowProcesslistQuery : public IParserBase
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{
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protected:
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const char * getName() const { return "SHOW PROCESSLIST query"; }
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bool parseImpl(Pos & pos, Pos end, ASTPtr & node, const char *& expected)
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{
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Pos begin = pos;
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ParserWhiteSpaceOrComments ws;
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ParserString s_show("SHOW", true, true);
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ParserString s_processlist("PROCESSLIST", true, true);
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ParserString s_format("FORMAT", true, true);
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ASTPtr format;
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ws.ignore(pos, end);
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if (!s_show.ignore(pos, end, expected))
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return false;
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ws.ignore(pos, end);
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if (!s_processlist.ignore(pos, end, expected))
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return false;
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ws.ignore(pos, end);
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if (s_format.ignore(pos, end, expected))
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{
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ws.ignore(pos, end);
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ParserIdentifier format_p;
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if (!format_p.parse(pos, end, format, expected))
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return false;
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dynamic_cast<ASTIdentifier &>(*format).kind = ASTIdentifier::Format;
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ws.ignore(pos, end);
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}
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ASTShowProcesslistQuery * query = new ASTShowProcesslistQuery(StringRange(begin, pos));
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query->format = format;
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node = query;
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return true;
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}
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};
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}
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