qubit-codec 0.17.4

Core codec traits and buffer conversion primitives for Rust
Documentation 
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// =============================================================================
//    Copyright (c) 2026 Haixing Hu.
//
//    SPDX-License-Identifier: Apache-2.0
//
//    Licensed under the Apache License, Version 2.0.
// =============================================================================

#[derive(Debug, Eq, PartialEq, thiserror::Error)]
pub(crate) enum PairEncodeError {
    #[error("bad input index")]
    BadInputIndex,
    #[error("bad output index")]
    BadOutputIndex,
    #[error("invalid output index {index} for output length {len}")]
    InvalidOutputIndex { index: usize, len: usize },
    #[error("insufficient output at index {output_index}: required {required}, available {available}")]
    InsufficientOutput {
        output_index: usize,
        required: usize,
        available: usize,
    },
    #[error("capacity overflow")]
    CapacityOverflow,
}