fluxion-core 0.8.0

Core traits and types for ordered stream processing
Documentation 
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// Copyright 2025 Umberto Gotti <umberto.gotti@umbertogotti.dev>
// Licensed under the Apache License, Version 2.0
// http://www.apache.org/licenses/LICENSE-2.0

use core::fmt;

/// Errors specific to subject operations (lifecycle and broadcasting).
///
/// These errors represent subject-specific failures distinct from stream processing errors.
/// They can be converted to `FluxionError` when needed for stream propagation.
#[derive(Debug, Clone, PartialEq, Eq)]
pub enum SubjectError {
    /// The subject has been closed and cannot accept new items.
    Closed,
}

impl fmt::Display for SubjectError {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        match self {
            Self::Closed => write!(f, "Subject is closed"),
        }
    }
}

impl core::error::Error for SubjectError {}