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#include <Parsers/ParserCreateFunctionQuery.h>
#include <Parsers/ASTCreateFunctionQuery.h>
#include <Parsers/ASTExpressionList.h>
#include <Parsers/ASTIdentifier.h>
#include <Parsers/CommonParsers.h>
#include <Parsers/ExpressionElementParsers.h>
#include <Parsers/ExpressionListParsers.h>
namespace DB
{
bool ParserCreateFunctionQuery::parseImpl(IParser::Pos & pos, ASTPtr & node, Expected & expected)
{
ParserKeyword s_create("CREATE");
ParserKeyword s_function("FUNCTION");
ParserKeyword s_or_replace("OR REPLACE");
ParserKeyword s_if_not_exists("IF NOT EXISTS");
ParserKeyword s_on("ON");
ParserIdentifier function_name_p;
ParserKeyword s_as("AS");
ParserExpression lambda_p;
ASTPtr function_name;
ASTPtr function_core;
String cluster_str;
bool or_replace = false;
bool if_not_exists = false;
if (!s_create.ignore(pos, expected))
return false;
if (s_or_replace.ignore(pos, expected))
or_replace = true;
if (!s_function.ignore(pos, expected))
return false;
if (!or_replace && s_if_not_exists.ignore(pos, expected))
if_not_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;
}
if (!s_as.ignore(pos, expected))
return false;
if (!lambda_p.parse(pos, function_core, expected))
return false;
auto create_function_query = std::make_shared<ASTCreateFunctionQuery>();
node = create_function_query;
create_function_query->function_name = function_name;
create_function_query->children.push_back(function_name);
create_function_query->function_core = function_core;
create_function_query->children.push_back(function_core);
create_function_query->or_replace = or_replace;
create_function_query->if_not_exists = if_not_exists;
create_function_query->cluster = std::move(cluster_str);
return true;
}
}
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