rrule 0.10.0

A pure Rust implementation of recurrence rules as defined in the iCalendar RFC.
Documentation
#![allow(clippy::module_name_repetitions)]
use thiserror::Error;

#[derive(Error, Debug, Clone, PartialEq)]
pub enum ParseError {
    #[error("`{0}` is not a valid timezone.")]
    InvalidTimezone(String),
    #[error("`{value}` is not a valid datetime format for `{property}`.")]
    InvalidDateTime { value: String, property: String },
    #[error("`{0}` is not a valid datetime format.")]
    InvalidDateTimeFormat(String),
    #[error("{property}:{value} is not a valid datetime in local timezone.")]
    InvalidDateTimeInLocalTimezone { value: String, property: String },
    #[error("{property}:{value} is not a valid datetime in local timezone. This value is ambiguous and can be `{date1}` or `{date2}`")]
    DateTimeInLocalTimezoneIsAmbiguous {
        value: String,
        property: String,
        date1: String,
        date2: String,
    },
    #[error("`{0}` is not a valid frequency.")]
    InvalidFrequency(String),
    #[error("`{0}` is not a valid weekday. Valid values are `MO`, `TU`, `WE`, `TH`, `FR`, `SA` and `SU`.")]
    InvalidWeekday(String),
    #[error("`{0}` is not a valid weekday start. Valid values are `MO`, `TU`, `WE`, `TH`, `FR`, `SA` and `SU`.")]
    InvalidWeekdayStart(String),
    #[error("`{0}` is not a valid BYEASTER value.")]
    InvalidByEaster(String),
    #[error("`{0}` is not a valid INTERVAL value.")]
    InvalidInterval(String),
    #[error("`{0}` is not a valid COUNT value.")]
    InvalidCount(String),
    #[error("`{0}` is not a valid BYHOUR value. Expected a comma separated list of values in range 0..=23, e.g. `1,3,4`")]
    InvalidByHour(String),
    #[error("`{0}` is not a valid BYWEEKNO value. Expected a comma separated list of values in range -53..=53, e.g. `-1,30,53`")]
    InvalidByWeekNo(String),
    #[error("`{0}` is not a valid BYYEARDAY value. Expected a comma separated list of values in range -366..=366, e.g. `-100,`")]
    InvalidByYearDay(String),
    #[error("`{0}` is not a valid BYMONTHDAY value. Expected a comma separated list of values in range -31..=31, e.g. `-30,10`")]
    InvalidByMonthDay(String),
    #[error("`{0}` is not a valid BYMONTH value. Expected a comma separated list of values in range 1..=12, e.g. `6,9,10`")]
    InvalidByMonth(String),
    #[error("`{0}` is not a valid BYMINUTE value. Expected a comma separated list of values in range 0..=59, e.g. `0,15,30,45`")]
    InvalidByMinute(String),
    #[error("`{0}` is not a valid BYSECOND value. Expected a comma separated list of values in range 0..=59, e.g. `0,15,30,45`")]
    InvalidBySecond(String),
    #[error("`{0}` is not a valid BYSETPOS value. Expected a comma separated list of integers, e.g. `-3,1`")]
    InvalidBySetPos(String),
    #[error("The property `{0}` was not found and it is required.")]
    MissingProperty(String),
    #[error(
        "`{0}` is a malformed property parameter. Parameter should be specified as `key=value`"
    )]
    InvalidParameterFormat(String),
    #[error("`{0}` is not a valid property parameter.")]
    UnrecognizedParameter(String),
    #[error("Found duplicate property for `{0}`, properties and parameters needs to be unique.")]
    DuplicateProperty(String),
    #[error("Missing start date. There needs to be a unique start date which the iteration can start from.")]
    MissingStartDate,
    #[error("Missing date generation property. There needs to be at least one `RRULE` or `RDATE` to generate occurrences.")]
    MissingDateGenerationRules,
    #[error("Property parameters are not supported for RRULE / EXRULE, found parameters: `{0}`")]
    PropertyParametersNotSupported(String),
    #[error(
        "`{0}` is not a valid property name, expected one of: `RRULE,EXRULE,DTSTART,RDATE,EXDATE`"
    )]
    UnrecognizedPropertyName(String),
    #[error(
        "The value of `DTSTART` and `UNTIL` needs to match. Both need to be either a `DATE` or `DATE-TIME`"
    )]
    DtStartUntilMismatchValue,
    #[error(
        "The value of `DTSTART` was specified in local timezone, but `UNTIL` was specified with a zulu time when it has to be specified in local time as well"
    )]
    DtStartUntilMismatchTimezone,
    #[error("Property parameter `{parameter}` was set to have value `{parameter_value}`, but found `{found_value}` ")]
    ParameterValueMismatch {
        parameter: String,
        parameter_value: String,
        found_value: String,
    },
}