ClickHouse/src/Parsers/ASTCreateFunctionQuery.cpp

#include <Common/quoteString.h>
#include <IO/Operators.h>
#include <Parsers/ASTCreateFunctionQuery.h>
#include <Parsers/ASTExpressionList.h>
#include <Parsers/ASTFunction.h>


namespace DB
{

ASTPtr ASTCreateFunctionQuery::clone() const
{
    auto res = std::make_shared<ASTCreateFunctionQuery>(*this);
    res->children.clear();

    res->function_name = function_name->clone();
    res->children.push_back(res->function_name);

    res->function_core = function_core->clone();
    res->children.push_back(res->function_core);
    return res;
}

void ASTCreateFunctionQuery::formatImpl(const IAST::FormatSettings & settings, IAST::FormatState & state, IAST::FormatStateStacked frame) const
{
    settings.ostr << (settings.hilite ? hilite_keyword : "") << "CREATE ";

    if (or_replace)
        settings.ostr << "OR REPLACE ";

    settings.ostr << "FUNCTION ";

    if (if_not_exists)
        settings.ostr << "IF NOT EXISTS ";

    settings.ostr << (settings.hilite ? hilite_none : "");

    settings.ostr << (settings.hilite ? hilite_identifier : "") << backQuoteIfNeed(getFunctionName()) << (settings.hilite ? hilite_none : "");

    formatOnCluster(settings);

    settings.ostr << (settings.hilite ? hilite_keyword : "") << " AS " << (settings.hilite ? hilite_none : "");
    function_core->formatImpl(settings, state, frame);
}

String ASTCreateFunctionQuery::getFunctionName() const
{
    String name;
    tryGetIdentifierNameInto(function_name, name);
    return name;
}

}