zerovec_derive/
lib.rs

1// This file is part of ICU4X. For terms of use, please see the file
2// called LICENSE at the top level of the ICU4X source tree
3// (online at: https://github.com/unicode-org/icu4x/blob/main/LICENSE ).
4
5// https://github.com/unicode-org/icu4x/blob/main/documents/process/boilerplate.md#library-annotations
6// #![cfg_attr(not(any(test, doc)), no_std)]
7// #![cfg_attr(
8//     not(test),
9//     deny(
10//         clippy::indexing_slicing,
11//         clippy::unwrap_used,
12//         clippy::expect_used,
13//         clippy::panic,
14//     )
15// )]
16#![warn(missing_docs)]
17
18//! Proc macros for generating `ULE`, `VarULE` impls and types for the `zerovec` crate
19
20use proc_macro::TokenStream;
21use syn::{parse_macro_input, DeriveInput, Ident};
22mod make_ule;
23mod make_varule;
24pub(crate) mod ule;
25mod utils;
26mod varule;
27
28/// Full docs for this proc macro can be found on the [`zerovec`](https://docs.rs/zerovec) crate.
29#[proc_macro_derive(ULE)]
30pub fn ule_derive(input: TokenStream) -> TokenStream {
31    let input = match ::syn::parse::<DeriveInput>(input) {
    ::syn::__private::Ok(data) => data,
    ::syn::__private::Err(err) => {
        return ::syn::__private::TokenStream::from(err.to_compile_error());
    }
}parse_macro_input!(input as DeriveInput);
32    TokenStream::from(ule::derive_impl(&input))
33}
34
35/// Full docs for this proc macro can be found on the [`zerovec`](https://docs.rs/zerovec) crate.
36#[proc_macro_derive(VarULE)]
37pub fn varule_derive(input: TokenStream) -> TokenStream {
38    let input = match ::syn::parse::<DeriveInput>(input) {
    ::syn::__private::Ok(data) => data,
    ::syn::__private::Err(err) => {
        return ::syn::__private::TokenStream::from(err.to_compile_error());
    }
}parse_macro_input!(input as DeriveInput);
39    TokenStream::from(varule::derive_impl(&input, None))
40}
41
42/// Full docs for this proc macro can be found on the [`zerovec`](https://docs.rs/zerovec) crate.
43#[proc_macro_attribute]
44pub fn make_ule(attr: TokenStream, item: TokenStream) -> TokenStream {
45    let input = match ::syn::parse::<DeriveInput>(item) {
    ::syn::__private::Ok(data) => data,
    ::syn::__private::Err(err) => {
        return ::syn::__private::TokenStream::from(err.to_compile_error());
    }
}parse_macro_input!(item as DeriveInput);
46    let attr = match ::syn::parse::<Ident>(attr) {
    ::syn::__private::Ok(data) => data,
    ::syn::__private::Err(err) => {
        return ::syn::__private::TokenStream::from(err.to_compile_error());
    }
}parse_macro_input!(attr as Ident);
47    TokenStream::from(make_ule::make_ule_impl(attr, input))
48}
49
50/// Full docs for this proc macro can be found on the [`zerovec`](https://docs.rs/zerovec) crate.
51#[proc_macro_attribute]
52pub fn make_varule(attr: TokenStream, item: TokenStream) -> TokenStream {
53    let input = match ::syn::parse::<DeriveInput>(item) {
    ::syn::__private::Ok(data) => data,
    ::syn::__private::Err(err) => {
        return ::syn::__private::TokenStream::from(err.to_compile_error());
    }
}parse_macro_input!(item as DeriveInput);
54    let attr = match ::syn::parse::<Ident>(attr) {
    ::syn::__private::Ok(data) => data,
    ::syn::__private::Err(err) => {
        return ::syn::__private::TokenStream::from(err.to_compile_error());
    }
}parse_macro_input!(attr as Ident);
55    TokenStream::from(make_varule::make_varule_impl(attr, input))
56}
zerovec_derive/lib.rs

zerovec_derive/
lib.rs
