mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-11 18:14:03 +00:00
41 lines
738 B
C++
41 lines
738 B
C++
#ifndef DBMS_PARSERS_IPARSERBASE_H
|
|
#define DBMS_PARSERS_IPARSERBASE_H
|
|
|
|
#include <list>
|
|
#include <Poco/SharedPtr.h>
|
|
|
|
#include <DB/Core/Types.h>
|
|
#include <DB/Parsers/IParser.h>
|
|
|
|
#include <iostream>
|
|
|
|
namespace DB
|
|
{
|
|
|
|
/** Базовый класс для большинства парсеров
|
|
*/
|
|
class IParserBase : public IParser
|
|
{
|
|
public:
|
|
bool parse(Pos & pos, Pos end, ASTPtr & node, String & expected)
|
|
{
|
|
expected = getName();
|
|
|
|
Pos begin = pos;
|
|
bool res = parseImpl(pos, end, node, expected);
|
|
if (res)
|
|
{
|
|
String s(begin, pos - begin);
|
|
//std::cerr << getName() << ": " << s << std::endl;
|
|
}
|
|
|
|
return res;
|
|
}
|
|
protected:
|
|
virtual bool parseImpl(Pos & pos, Pos end, ASTPtr & node, String & expected) = 0;
|
|
};
|
|
|
|
}
|
|
|
|
#endif
|