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#include "parseDatabaseAndTableName.h"
#include <Parsers/ASTIdentifier_fwd.h>
#include <Parsers/CommonParsers.h>
#include <Parsers/ExpressionElementParsers.h>
namespace DB
{
bool parseDatabaseAndTableName(IParser::Pos & pos, Expected & expected, String & database_str, String & table_str)
{
ParserToken s_dot(TokenType::Dot);
ParserIdentifier table_parser;
ASTPtr database;
ASTPtr table;
database_str = "";
table_str = "";
if (!table_parser.parse(pos, database, expected))
return false;
if (s_dot.ignore(pos))
{
if (!table_parser.parse(pos, table, expected))
{
database_str = "";
return false;
}
tryGetIdentifierNameInto(database, database_str);
tryGetIdentifierNameInto(table, table_str);
}
else
{
database_str = "";
tryGetIdentifierNameInto(database, table_str);
}
return true;
}
bool parseDatabaseAndTableAsAST(IParser::Pos & pos, Expected & expected, ASTPtr & database, ASTPtr & table)
{
ParserToken s_dot(TokenType::Dot);
ParserIdentifier table_parser(true);
if (!table_parser.parse(pos, table, expected))
return false;
if (s_dot.ignore(pos))
{
database = table;
if (!table_parser.parse(pos, table, expected))
return false;
}
return true;
}
bool parseDatabase(IParser::Pos & pos, Expected & expected, String & database_str)
{
ParserToken s_dot(TokenType::Dot);
ParserIdentifier identifier_parser;
ASTPtr database;
database_str = "";
if (!identifier_parser.parse(pos, database, expected))
return false;
tryGetIdentifierNameInto(database, database_str);
return true;
}
bool parseDatabaseAsAST(IParser::Pos & pos, Expected & expected, ASTPtr & database)
{
ParserIdentifier identifier_parser(/* allow_query_parameter */true);
return identifier_parser.parse(pos, database, expected);
}
bool parseDatabaseAndTableNameOrAsterisks(IParser::Pos & pos, Expected & expected, String & database, bool & any_database, String & table, bool & any_table)
{
return IParserBase::wrapParseImpl(pos, [&]
{
if (ParserToken{TokenType::Asterisk}.ignore(pos, expected))
{
auto pos_before_dot = pos;
if (ParserToken{TokenType::Dot}.ignore(pos, expected)
&& ParserToken{TokenType::Asterisk}.ignore(pos, expected))
{
/// *.*
any_database = true;
database.clear();
any_table = true;
table.clear();
return true;
}
/// *
pos = pos_before_dot;
any_database = false;
database.clear();
any_table = true;
table.clear();
return true;
}
ASTPtr ast;
ParserIdentifier identifier_parser;
if (identifier_parser.parse(pos, ast, expected))
{
String first_identifier = getIdentifierName(ast);
auto pos_before_dot = pos;
if (ParserToken{TokenType::Dot}.ignore(pos, expected))
{
if (ParserToken{TokenType::Asterisk}.ignore(pos, expected))
{
/// db.*
any_database = false;
database = std::move(first_identifier);
any_table = true;
table.clear();
return true;
}
else if (identifier_parser.parse(pos, ast, expected))
{
/// db.table
any_database = false;
database = std::move(first_identifier);
any_table = false;
table = getIdentifierName(ast);
return true;
}
}
/// table
pos = pos_before_dot;
any_database = false;
database.clear();
any_table = false;
table = std::move(first_identifier);
return true;
}
return false;
});
}
}
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