use crate::*;
pub(crate) fn binary_name() -> TokenStream {
quote! {
{
(|| -> ::std::result::Result<::std::string::String, ::config_manager::Error> {
::std::result::Result::Ok(
::std::env::current_exe()
.map_err(|err| {
::config_manager::Error::ExternalError(::std::format!(
"failed to retrieve path to current exe: {}",
err
))
})?
.file_name()
.ok_or_else(|| {
::config_manager::Error::ExternalError(
"failed to read file name of current exe".to_string(),
)
})?
.to_str()
.ok_or_else(|| {
::config_manager::Error::ExternalError(
"OS file name of current exe is not valid UTF".to_string(),
)
})?
.to_string(),
)
})()
}
}
}
pub(crate) fn path_to_string(path: &Path) -> String {
path.get_ident()
.unwrap_or_else(|| panic!("Inner: path {} is not an ident", path.to_token_stream()))
.to_token_stream()
.to_string()
}
pub(crate) fn is_type_an_optional(ty: &Type) -> Option<Type> {
let ty = ty.clone();
let path = match ty {
Type::Path(path) if path.qself.is_none() => path.path,
_ => return None,
};
let idents_of_path = path.segments.iter().fold(String::new(), |mut acc, v| {
acc.push_str(&v.ident.to_string());
acc.push('|');
acc
});
let option_segment = vec![
"std|option|Option|",
"core|option|Option|",
"option|Option|",
"Option|",
]
.into_iter()
.find(|s| idents_of_path == *s)
.and_then(|_| path.segments.last());
option_segment
.and_then(|path_seg| match path_seg.arguments {
PathArguments::AngleBracketed(ref params) => params.args.first(),
_ => None,
})
.and_then(|generic_arg| match generic_arg {
GenericArgument::Type(ty) => Some(ty.clone()),
_ => None,
})
}