/*
 * Copyright (c) 2017, 2021, Oracle and/or its affiliates.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License, version 2.0, as
 * published by the Free Software Foundation.
 *
 * This program is also distributed with certain software (including
 * but not limited to OpenSSL) that is licensed under separate terms,
 * as designated in a particular file or component or in included license
 * documentation.  The authors of MySQL hereby grant you an
 * additional permission to link the program and your derivative works
 * with the separately licensed software that they have included with
 * MySQL.
 *
 * Without limiting anything contained in the foregoing, this file,
 * which is part of MySQL Connector/Node.js, is also subject to the
 * Universal FOSS Exception, version 1.0, a copy of which can be found at
 * http://oss.oracle.com/licenses/universal-foss-exception.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU General Public License, version 2.0, for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA
 */

'use strict';

const Expr = require('../../../../Protocol/Stubs/mysqlx_expr_pb').Expr;
const Pa = require('parsimmon');

const parser = options => r => Pa
    .seq(Pa.string(':'), r.ID)
    .map(data => data[1])
    .map(data => {
        const expr = new Expr();
        const index = options.placeholders.indexOf(data);

        expr.setType(Expr.Type.PLACEHOLDER);
        expr.setPosition(index > -1 ? index : options.placeholders.length);

        if (index === -1) {
            options.placeholders.push(data);
        }

        return expr;
    });

module.exports = { name: 'PLACEHOLDER', parser };
