use std::{    borrow::Cow,    convert::{Infallible, TryFrom},    path::Path,}; use git_object::bstr::{BStr, BString, ByteSlice, ByteVec}; use crate::{FullNameRef, PartialNameRef}; /// The error used in the [`PartialNameRef`][super::PartialNameRef]::try_from(…) implementations.pub type Error = git_validate::reference::name::Error; impl<'a> FullNameRef<'a> {    /// Convert this name into the relative path identifying the reference location.    pub fn to_path(self) -> Cow<'a, Path> {        self.0.to_path().expect("UTF-8 conversion always succeeds").into()    }     /// Return ourselves as byte string which is a valid refname    pub fn as_bstr(&self) -> &'a BStr {        self.0    }} impl<'a> PartialNameRef<'a> {    /// Convert this name into the relative path possibly identifying the reference location.    /// Note that it may be only a partial path though.    pub fn to_partial_path(&'a self) -> Cow<'a, Path> {        self.0.to_path().expect("UTF-8 conversion always succeeds").into()    }     /// Provide the name as binary string which is known to be a valid partial ref name.    pub fn as_bstr(&'a self) -> &'a BStr {        self.0.as_ref()    }} impl PartialNameRef<'static> {    /// Append the `component` to ourselves and validate the newly created partial path.    ///    /// Note that this method is meant to have an owned starting point as this is considered    /// the typical usecase.    pub fn join(self, component: impl AsRef<[u8]>) -> Result<Self, crate::name::Error> {        let mut b = self.0.into_owned();        b.push_byte(b'/');        b.extend(component.as_ref());        git_validate::reference::name_partial(b.as_ref())?;        Ok(PartialNameRef(b.into()))    }} impl<'a> TryFrom<&'a BStr> for FullNameRef<'a> {    type Error = Error;     fn try_from(v: &'a BStr) -> Result<Self, Self::Error> {        Ok(FullNameRef(git_validate::reference::name(v)?))    }} impl<'a> TryFrom<FullNameRef<'a>> for PartialNameRef<'a> {    type Error = Infallible;     fn try_from(v: FullNameRef<'a>) -> Result<Self, Self::Error> {        Ok(PartialNameRef(v.0.into()))    }} impl<'a> TryFrom<&'a BStr> for PartialNameRef<'a> {    type Error = Error;     fn try_from(v: &'a BStr) -> Result<Self, Self::Error> {        Ok(PartialNameRef(git_validate::reference::name_partial(v)?.into()))    }} impl<'a> TryFrom<&'a str> for FullNameRef<'a> {    type Error = Error;     fn try_from(v: &'a str) -> Result<Self, Self::Error> {        let v = v.as_bytes().as_bstr();        Ok(FullNameRef(git_validate::reference::name(v)?))    }} impl<'a> TryFrom<&'a str> for PartialNameRef<'a> {    type Error = Error;     fn try_from(v: &'a str) -> Result<Self, Self::Error> {        let v = v.as_bytes().as_bstr();        Ok(PartialNameRef(git_validate::reference::name_partial(v)?.into()))    }} impl<'a> TryFrom<&'a String> for FullNameRef<'a> {    type Error = Error;     fn try_from(v: &'a String) -> Result<Self, Self::Error> {        let v = v.as_bytes().as_bstr();        Ok(FullNameRef(git_validate::reference::name(v)?))    }} impl<'a> TryFrom<&'a String> for PartialNameRef<'a> {    type Error = Error;     fn try_from(v: &'a String) -> Result<Self, Self::Error> {        let v = v.as_bytes().as_bstr();        Ok(PartialNameRef(git_validate::reference::name_partial(v)?.into()))    }} impl TryFrom<String> for PartialNameRef<'static> {    type Error = Error;     fn try_from(v: String) -> Result<Self, Self::Error> {        git_validate::reference::name_partial(v.as_bytes().as_bstr())?;        Ok(PartialNameRef(BString::from(v).into()))    }} impl TryFrom<BString> for PartialNameRef<'static> {    type Error = Error;     fn try_from(v: BString) -> Result<Self, Self::Error> {        git_validate::reference::name_partial(v.as_ref())?;        Ok(PartialNameRef(v.into()))    }}