#include "SqlAstSelectList.h"
#include "SqlAstSelectListEntry.h"
#include "SqlParser.h"

using namespace SqlAst;

std::shared_ptr<SqlAst::SelectList> parseSelectList(SqlParser &parser)
{
	// parse select element
	// whats next?
	// comma -> parse an element
	// something else return and let caller figure it out
	auto ast_select_list = std::make_shared<SelectList>();
	while (1) {
		auto ast_select_elem = parseSelectListEntry(parser);
		if (ast_select_elem) {
			ast_select_list->add(ast_select_elem);
		}
		else {
			// todo error
		}
		if (!parser.expectToken(BasicTokenType::Comma)) {
			break;
		}
	}
	return ast_select_list;
}