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#include <Parsers/ASTDropFunctionQuery.h>
#include <Parsers/ASTIdentifier.h>
#include <Parsers/CommonParsers.h>
#include <Parsers/ExpressionElementParsers.h>
#include <Parsers/ParserDropFunctionQuery.h>
namespace DB
{
bool ParserDropFunctionQuery::parseImpl(IParser::Pos & pos, ASTPtr & node, Expected & expected)
{
ParserKeyword s_drop("DROP");
ParserKeyword s_function("FUNCTION");
ParserKeyword s_if_exists("IF EXISTS");
ParserKeyword s_on("ON");
ParserIdentifier function_name_p;
String cluster_str;
bool if_exists = false;
ASTPtr function_name;
if (!s_drop.ignore(pos, expected))
return false;
if (!s_function.ignore(pos, expected))
return false;
if (s_if_exists.ignore(pos, expected))
if_exists = true;
if (!function_name_p.parse(pos, function_name, expected))
return false;
if (s_on.ignore(pos, expected))
{
if (!ASTQueryWithOnCluster::parse(pos, cluster_str, expected))
return false;
}
auto drop_function_query = std::make_shared<ASTDropFunctionQuery>();
drop_function_query->if_exists = if_exists;
drop_function_query->cluster = std::move(cluster_str);
node = drop_function_query;
drop_function_query->function_name = function_name->as<ASTIdentifier &>().name();
return true;
}
}
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