iso14229-1 0.1.0

A ISO 14229-1 protocol.
Documentation 
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//! request of Service 14
#![allow(clippy::non_minimal_cfg)]

use crate::{
    error::Error,
    request::{Request, SubFunction},
    utils, Configuration, RequestData, Service,
};

#[derive(Debug, Copy, Clone, Eq, PartialEq)]
pub struct ClearDiagnosticInfo {
    group: utils::U24,
    #[cfg(any(feature = "std2020"))]
    mem_sel: Option<u8>, // Standard 2020 added
}

impl ClearDiagnosticInfo {
    #[cfg(any(feature = "std2020"))]
    pub fn new(group: utils::U24, mem_sel: Option<u8>) -> Self {
        Self { group, mem_sel }
    }

    #[cfg(any(feature = "std2006", feature = "std2013"))]
    pub fn new(group: utils::U24) -> Self {
        Self { group }
    }

    pub fn group(&self) -> u32 {
        self.group.0
    }

    #[cfg(any(feature = "std2020"))]
    pub fn memory_selection(&self) -> Option<u8> {
        self.mem_sel
    }
}

impl From<ClearDiagnosticInfo> for Vec<u8> {
    fn from(v: ClearDiagnosticInfo) -> Self {
        #[allow(unused_mut)]
        let mut result: Vec<_> = v.group.into();
        #[cfg(any(feature = "std2020"))]
        if let Some(v) = v.mem_sel {
            result.push(v);
        }

        result
    }
}

impl RequestData for ClearDiagnosticInfo {
    #[inline]
    fn new_request<T: AsRef<[u8]>>(
        data: T,
        sub_func: Option<u8>,
        _: &Configuration,
    ) -> Result<Request, Error> {
        let data = data.as_ref();
        match sub_func {
            Some(_) => Err(Error::SubFunctionError(Service::ClearDiagnosticInfo)),
            None => {
                #[cfg(any(feature = "std2020"))]
                utils::data_length_check(data.len(), 3, false)?;
                #[cfg(any(feature = "std2006", feature = "std2013"))]
                utils::data_length_check(data.len(), 3, true)?;

                Ok(Request {
                    service: Service::ClearDiagnosticInfo,
                    sub_func: None,
                    data: data.to_vec(),
                })
            }
        }
    }
}

impl TryFrom<(&Request, &Configuration)> for ClearDiagnosticInfo {
    type Error = Error;
    #[cfg(any(feature = "std2020"))]
    fn try_from((req, _): (&Request, &Configuration)) -> Result<Self, Self::Error> {
        let service = req.service();
        if service != Service::ClearDiagnosticInfo || req.sub_func.is_some() {
            return Err(Error::ServiceError(service));
        }

        let data = &req.data;
        let data_len = data.len();
        let mut offset = 0;
        let group = utils::U24::from_be_bytes([data[offset], data[offset + 1], data[offset + 2]]);
        offset += 3;

        let mem_selection = if data_len > offset {
            utils::data_length_check(data_len, 4, true)?;
            Some(data[offset])
        } else {
            None
        };

        Ok(Self::new(group, mem_selection))
    }

    #[cfg(any(feature = "std2006", feature = "std2013"))]
    fn try_from((req, _): (&Request, &Configuration)) -> Result<Self, Self::Error> {
        let service = req.service();
        if service != Service::ClearDiagnosticInfo || req.sub_func.is_some() {
            return Err(Error::ServiceError(service));
        }

        let data = &req.data;
        let group = utils::U24::from_be_bytes([data[0], data[1], data[2]]);

        Ok(Self::new(group))
    }
}