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#![allow(clippy::use_self)]
use proc_macro2::{Ident, Span, TokenStream};
use quote::{quote, ToTokens, TokenStreamExt};
use strum_macros::Display;
#[derive(Copy, Clone, Debug, Display, Eq, PartialEq)]
pub enum SerdeFormat {
#[cfg(any(serde_default, feature = "__serde_bincode"))]
Bincode,
#[cfg(feature = "__serde_cbor")]
Cbor,
#[cfg(feature = "__serde_cbor4ii")]
Cbor4ii,
}
#[allow(clippy::vec_init_then_push)]
#[must_use]
pub fn serde_format() -> SerdeFormat {
let mut formats = vec![];
#[cfg(any(serde_default, feature = "__serde_bincode"))]
formats.push(SerdeFormat::Bincode);
#[cfg(feature = "__serde_cbor")]
formats.push(SerdeFormat::Cbor);
#[cfg(feature = "__serde_cbor4ii")]
formats.push(SerdeFormat::Cbor4ii);
assert!(
formats.len() <= 1,
"Multiple serde formats selected: {:?}",
formats
);
formats.pop().expect("No serde format selected")
}
impl SerdeFormat {
#[must_use]
pub fn as_feature(self) -> &'static str {
match self {
#[cfg(any(serde_default, feature = "__serde_bincode"))]
Self::Bincode => "serde_bincode",
#[cfg(feature = "__serde_cbor")]
Self::Cbor => "serde_cbor",
#[cfg(feature = "__serde_cbor4ii")]
Self::Cbor4ii => "serde_cbor4ii",
}
}
}
impl ToTokens for SerdeFormat {
fn to_tokens(&self, tokens: &mut TokenStream) {
let ident = Ident::new(&self.to_string(), Span::call_site());
tokens.append_all(quote! {
test_fuzz::SerdeFormat::#ident
});
}
}