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#![cfg_attr(feature = "clippy", feature(plugin))]
#![cfg_attr(feature = "clippy", plugin(clippy))]

//! A cron expression parser and schedule explorer.
//!
//! In addition to the regular expressions, you can also use the following shortcut expressions with Schedule::from_str,
//! such as `@yearly` `@monthly` `@weekly` `@daily` `@hourly` `@minutely` `@secondly`,
//! make cron- Expression Iterator.
//! # Example
//! ```
//! extern crate chrono;
//! extern crate cron_clock;
//!
//! use cron_clock::Schedule;
//! use chrono::Utc;
//! use std::str::FromStr;
//!
//! fn main() {
//!   //               sec  min   hour   day of month   month   day of week   year
//!   let expression = "0   30   9,12,15     1,15       May-Aug  Mon,Wed,Fri  2018/2";
//!   let schedule = Schedule::from_str(expression).unwrap();
//!   println!("Upcoming fire times:");
//!   for datetime in schedule.upcoming(Utc).take(10) {
//!     println!("-> {}", datetime);
//!   }
//! }
//!
//! /*
//! Upcoming fire times:
//! -> 2018-06-01 09:30:00 UTC
//! -> 2018-06-01 12:30:00 UTC
//! -> 2018-06-01 15:30:00 UTC
//! -> 2018-06-15 09:30:00 UTC
//! -> 2018-06-15 12:30:00 UTC
//! -> 2018-06-15 15:30:00 UTC
//! -> 2018-08-01 09:30:00 UTC
//! -> 2018-08-01 12:30:00 UTC
//! -> 2018-08-01 15:30:00 UTC
//! -> 2018-08-15 09:30:00 UTC
//! */
//! ```
extern crate chrono;
extern crate nom;
#[macro_use]
extern crate error_chain;
#[cfg(test)]
extern crate chrono_tz;

pub(crate) mod error;
pub(crate) mod schedule;
pub(crate) mod time_unit;

pub use chrono::offset::TimeZone;
pub use chrono::{FixedOffset, Local, Utc};
pub use schedule::{Schedule, ScheduleIterator, ScheduleIteratorOwned};
pub use time_unit::TimeUnitSpec;