date_time_formatter 0.3.0

date-time-formatter-rs is a Rust crate that provides a simple and efficient way to parse and format date and time values. It is a rewrite of a subset of the Java time library, and aims to match its behaviour.
Documentation 
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// Copyright (C) 2025 Palantir
// This program is free software; you can redistribute it and/or modify it
// under the terms of the GNU General Public License as published by the Free
// Software Foundation; either version 2 of the License, or (at your option)
// any later version.
// 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 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., 59
// Temple Place, Suite 330, Boston, MA 02111-1307 USA
// sbhatia@palantir.com
// "CLASSPATH" EXCEPTION TO THE GPL
// Certain source files distributed by Oracle America and/or its affiliates are
// subject to the following clarification and special exception to the GPL, but
// only where Oracle has expressly included in the particular source file's header
// the words "Oracle designates this particular file as subject to the "Classpath"
// exception as provided by Oracle in the LICENSE file that accompanied this code."
// Linking this library statically or dynamically with other modules is making
// a combined work based on this library.  Thus, the terms and conditions of
// the GNU General Public License cover the whole combination.
// As a special exception, the copyright holders of this library give you
// permission to link this library with independent modules to produce an
// executable, regardless of the license terms of these independent modules,
// and to copy and distribute the resulting executable under terms of your
// choice, provided that you also meet, for each linked independent module,
// the terms and conditions of the license of that module.  An independent
// module is a module which is not derived from or based on this library.  If
// you modify this library, you may extend this exception to your version of
// the library, but you are not obligated to do so.  If you do not wish to do
// so, delete this exception statement from your version. "

pub struct ParsePosition {
    index: isize,
    error_index: isize,
}

impl ParsePosition {
    pub fn new(index: isize) -> Self {
        ParsePosition {
            index,
            error_index: -1,
        }
    }

    pub fn get_index(&self) -> isize {
        self.index
    }

    pub fn set_index(&mut self, index: isize) {
        self.index = index;
    }

    pub fn get_error_index(&self) -> isize {
        self.error_index
    }

    pub fn set_error_index(&mut self, error_index: isize) {
        self.error_index = error_index;
    }
}