1extern crate proc_macro;
2
3use crate::proc_macro::TokenStream;
4use quote::quote;
5use syn::{self, DeriveInput, Ident};
6
7#[proc_macro_derive(FromRaw)]
8pub fn from_raw_macro_derive(input: TokenStream) -> TokenStream {
9 impl_from_raw(&syn::parse(input).expect("could not parse input"))
10}
11
12fn impl_from_raw(ast: &DeriveInput) -> TokenStream {
13 let name = &ast.ident;
14 let generics = &ast.generics;
15
16 let gen = quote! {
17 impl #generics crate::ffi::FromRaw<#name #generics> for #name #generics {}
18 };
19
20 gen.into()
21}
22
23#[proc_macro_derive(CloneRaw)]
24pub fn clone_raw_macro_derive(input: TokenStream) -> TokenStream {
25 impl_clone_raw(&syn::parse(input).expect("could not parse input"))
26}
27
28fn impl_clone_raw(ast: &DeriveInput) -> TokenStream {
29 let name = &ast.ident;
30 let generics = &ast.generics;
31
32 let gen = quote! {
33 impl #generics crate::ffi::CloneRaw<#name #generics> for #name #generics {}
34 };
35
36 gen.into()
37}
38
39#[proc_macro_derive(AsRaw)]
40pub fn as_raw_macro_derive(input: TokenStream) -> TokenStream {
41 impl_as_raw(&syn::parse(input).expect("could not parse input"))
42}
43
44fn impl_as_raw(ast: &DeriveInput) -> TokenStream {
45 let name = &ast.ident;
46 let generics = &ast.generics;
47
48 let gen = quote! {
49 impl #generics crate::ffi::AsRaw for #name #generics {}
50 };
51
52 gen.into()
53}
54
55#[proc_macro_derive(BuilderDelegate)]
56pub fn builder_delegate_macro_derive(input: TokenStream) -> TokenStream {
57 impl_builder_delegate(&syn::parse(input).expect("could not parse input"))
58}
59
60fn impl_builder_delegate(ast: &DeriveInput) -> TokenStream {
61 let name = &ast.ident;
62
63 let builder: Ident =
64 syn::parse_str(&format!("{}Builder", name)).expect("could not parse builder name");
65
66 let generics = &ast.generics;
67
68 let gen = quote! {
69 impl #generics crate::prelude::BuilderDelegate<#builder #generics> for #name #generics {}
70 };
71
72 gen.into()
73}