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41 lines
738 B
C++
41 lines
738 B
C++
#ifndef DBMS_PARSERS_IPARSERBASE_H
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#define DBMS_PARSERS_IPARSERBASE_H
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#include <list>
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#include <Poco/SharedPtr.h>
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#include <DB/Core/Types.h>
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#include <DB/Parsers/IParser.h>
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#include <iostream>
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namespace DB
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{
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/** Базовый класс для большинства парсеров
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*/
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class IParserBase : public IParser
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{
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public:
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bool parse(Pos & pos, Pos end, ASTPtr & node, String & expected)
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{
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expected = getName();
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Pos begin = pos;
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bool res = parseImpl(pos, end, node, expected);
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if (res)
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{
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String s(begin, pos - begin);
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//std::cerr << getName() << ": " << s << std::endl;
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}
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return res;
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}
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protected:
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virtual bool parseImpl(Pos & pos, Pos end, ASTPtr & node, String & expected) = 0;
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};
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}
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#endif
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