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use thiserror::Error;

/// Error caused by the CLI program.
#[derive(Debug, Error)]
#[non_exhaustive]
pub enum RuntimeError {
    /// When it fails to write JSON representation of
    /// [DataTreeReflection](crate::data_tree::Reflection) to stdout.
    #[error("SerializationFailure: {_0}")]
    SerializationFailure(serde_json::Error),
    /// When it fails to read JSON representation of
    /// [DataTreeReflection](crate::data_tree::Reflection) from stdin.
    #[error("DeserializationFailure: {_0}")]
    DeserializationFailure(serde_json::Error),
    /// When both `--json-input` and file names are both specified.
    #[error("JsonInputArgConflict: Arguments exist alongside --json-input")]
    JsonInputArgConflict,
    /// When input JSON data is not a valid tree.
    #[error("InvalidInputReflection: {_0}")]
    InvalidInputReflection(String),
}