itihas 1.0.0

Itihas — structured world history: civilizations, eras, events, historical figures, and calendar metadata
Documentation 
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//! Error types for itihas.

use alloc::string::String;

use thiserror::Error;

/// Errors that can occur in historical data processing.
#[derive(Debug, Clone, PartialEq, Eq, Error)]
#[non_exhaustive]
pub enum ItihasError {
    /// Era not found by name.
    #[error("unknown era: {0}")]
    UnknownEra(String),

    /// Civilization not found by name.
    #[error("unknown civilization: {0}")]
    UnknownCivilization(String),

    /// Calendar system not found by name.
    #[error("unknown calendar: {0}")]
    UnknownCalendar(String),

    /// Year value is out of supported range.
    #[error("invalid year: {0}")]
    InvalidYear(i32),

    /// Event not found by name.
    #[error("event not found: {0}")]
    EventNotFound(String),

    /// Figure not found by name.
    #[error("figure not found: {0}")]
    FigureNotFound(String),
}