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/*
* Copyright (c) 2013, 2016, Oracle and/or its affiliates. All rights reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; version 2 of the
* License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA
*/
#pragma once
#include "mysql-parser-common.h"
/**
* C++ interface for the ANTLR based MySQL lexer.
* This scanner class is not needed for the MySQLRecognizer class (it uses the raw lexer)
* but provides tokenizing functionality beside it.
*/
class MYSQL_PARSER_PUBLIC_FUNC MySQLScanner : public MySQLRecognitionBase
{
public:
MySQLScanner(const char *text, size_t length, bool is_utf8, long server_version,
const std::string &sql_mode_string, const std::set<std::string> &charsets);
virtual ~MySQLScanner();
static MySQLQueryType getQueryType(const char *text, size_t length, bool is_utf8, long server_version);
void reset();
// Informations about the current token.
MySQLToken token();
uint32_t token_type();
uint32_t token_line();
size_t token_start();
size_t token_end();
size_t token_channel();
std::string token_text();
void next(bool skip_hidden = true);
void previous(bool skip_hidden = true);
bool skipIf(uint32_t token);
size_t position();
void seek(size_t position);
void seek(size_t line, size_t offset);
uint32_t look_around(int offset, bool ignore_hidden);
bool is(uint32_t type);
bool is_keyword();
bool is_relation();
bool is_number();
bool is_operator();
bool is_identifier();
bool is_separator();
void set_server_version(long version);
long get_server_version();
void set_sql_mode(const std::string &new_mode);
unsigned int get_sql_mode_flags();
virtual std::string text();
virtual const char* lineStart();
protected:
void setup();
private:
class Private;
Private *d;
};
/**
* Similar to the scanner class but using only the absolute minimum setup to determine the
* type of a query in a given sql text, to make it as fast as possible.
*/
class MYSQL_PARSER_PUBLIC_FUNC MySQLQueryIdentifier : public MySQLRecognitionBase
{
public:
MySQLQueryIdentifier(long server_version, const std::string &sql_mode_string, const std::set<std::string> &charsets);
virtual ~MySQLQueryIdentifier();
MySQLQueryType getQueryType(const char *text, size_t length, bool is_utf8);
virtual std::string text() { return ""; };
virtual const char* lineStart() { return NULL; };
private:
class Private;
Private *d;
bool skipDefiner(pANTLR3_TOKEN_SOURCE tokenSource, pANTLR3_COMMON_TOKEN &token);
MySQLQueryType determineQueryType(pANTLR3_TOKEN_SOURCE tokenSource);
};
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