fef 0.2.3

Rust implementation of a parser of the FEF format
Documentation 
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use crate::v0::raw::VariableLengthEnum;

use super::error::ConfigTokenError;

/// Configuration key identifiers.
#[derive(Debug, Clone, Hash, PartialEq, Eq, Copy)]
#[non_exhaustive]
pub enum ConfigToken {}

impl ConfigToken {
    pub fn is_enum_configuration(&self) -> bool {
        *self as usize <= 0x7F
    }
    pub fn variable_length_enum(&self) -> VariableLengthEnum {
        VariableLengthEnum::from(*self as usize)
    }
}

impl TryFrom<VariableLengthEnum> for ConfigToken
where
    <ConfigToken as TryFrom<usize>>::Error: From<ConfigTokenError>,
{
    type Error = ConfigTokenError;
    fn try_from(value: VariableLengthEnum) -> Result<Self, Self::Error> {
        let value2 = value.clone();
        let int_value: usize = value
            .clone()
            .try_into()
            .map_err(move |_| ConfigTokenError::IdentifierTooLarge { identifier: value2 })?;
        Ok(int_value.try_into()?)
    }
}

impl TryFrom<usize> for ConfigToken {
    type Error = ConfigTokenError;
    fn try_from(value: usize) -> Result<Self, Self::Error> {
        match value {
            _ => Err(ConfigTokenError::IdentifierNotRecognized {
                identifier: value.into(),
            }),
        }
    }
}

impl std::fmt::Display for ConfigToken {
    fn fmt(&self, _f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        match self {
            _ => todo!("Implement Display when configurations are added"),
        }
    }
}