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#![cfg_attr(
feature = "cargo-clippy",
allow(renamed_and_removed_lints, redundant_field_names,)
)]
#![allow(deprecated)]
extern crate proc_macro;
extern crate proc_macro2;
#[macro_use]
extern crate syn;
#[macro_use]
extern crate quote;
mod ast;
mod attr;
mod bound;
mod clone;
mod cmp;
mod debug;
mod default;
mod hash;
mod matcher;
mod utils;
use proc_macro::TokenStream;
fn derive_impls(input: &ast::Input) -> Result<proc_macro2::TokenStream, String> {
let mut tokens = proc_macro2::TokenStream::new();
if input.attrs.clone.is_some() {
tokens.extend(clone::derive_clone(input));
}
if input.attrs.copy.is_some() {
tokens.extend(clone::derive_copy(input));
}
if input.attrs.debug.is_some() {
tokens.extend(debug::derive(input));
}
if let Some(ref default) = input.attrs.default {
tokens.extend(default::derive(input, default));
}
if input.attrs.eq.is_some() {
tokens.extend(cmp::derive_eq(input));
}
if input.attrs.hash.is_some() {
tokens.extend(hash::derive(input));
}
if input.attrs.partial_eq.is_some() {
tokens.extend(cmp::derive_partial_eq(input)?);
}
Ok(tokens)
}
fn detail(input: TokenStream) -> Result<TokenStream, String> {
let parsed = syn::parse::<syn::DeriveInput>(input).map_err(|e| e.to_string())?;
let output = derive_impls(&ast::Input::from_ast(&parsed)?)?;
Ok(output.into())
}
#[cfg_attr(not(test), proc_macro_derive(Derivative, attributes(derivative)))]
pub fn derivative(input: TokenStream) -> TokenStream {
match detail(input) {
Ok(output) => output,
Err(e) => panic!(e),
}
}