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#pragma once
#include <Parsers/IAST_fwd.h>
namespace DB
{
class IParser;
/// Parse query or set 'out_error_message'.
ASTPtr tryParseQuery(
IParser & parser,
const char * & _out_query_end, // query start as input parameter, query end as output
const char * end,
std::string & out_error_message,
bool hilite,
const std::string & description,
bool allow_multi_statements, /// If false, check for non-space characters after semicolon and set error message if any.
size_t max_query_size, /// If (end - pos) > max_query_size and query is longer than max_query_size then throws "Max query size exceeded".
/// Disabled if zero. Is used in order to check query size if buffer can contains data for INSERT query.
size_t max_parser_depth,
bool skip_insignificant = true); /// If true, lexer will skip all insignificant tokens (e.g. whitespaces)
/// Parse query or throw an exception with error message.
ASTPtr parseQueryAndMovePosition(
IParser & parser,
const char * & pos, /// Moved to end of parsed fragment.
const char * end,
const std::string & description,
bool allow_multi_statements,
size_t max_query_size,
size_t max_parser_depth);
ASTPtr parseQuery(
IParser & parser,
const char * begin,
const char * end,
const std::string & description,
size_t max_query_size,
size_t max_parser_depth);
ASTPtr parseQuery(
IParser & parser,
const std::string & query,
const std::string & query_description,
size_t max_query_size,
size_t max_parser_depth);
ASTPtr parseQuery(
IParser & parser,
const std::string & query,
size_t max_query_size,
size_t max_parser_depth);
/** Split queries separated by ; on to list of single queries
* Returns pointer to the end of last successfully parsed query (first), and true if all queries are successfully parsed (second)
* NOTE: INSERT's data should be placed in single line.
*/
std::pair<const char *, bool> splitMultipartQuery(
const std::string & queries,
std::vector<std::string> & queries_list,
size_t max_query_size,
size_t max_parser_depth,
bool allow_settings_after_format_in_insert);
}
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