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extern crate proc_macro; use crate::proc_macro::TokenStream; use quote::quote; use syn::{self, DeriveInput, Ident}; #[proc_macro_derive(FromRaw)] pub fn from_raw_macro_derive(input: TokenStream) -> TokenStream { impl_from_raw(&syn::parse(input).unwrap()) } fn impl_from_raw(ast: &DeriveInput) -> TokenStream { let name = &ast.ident; let generics = &ast.generics; let gen = quote! { impl #generics crate::ffi::FromRaw<#name #generics> for #name #generics {} }; gen.into() } #[proc_macro_derive(CloneRaw)] pub fn clone_raw_macro_derive(input: TokenStream) -> TokenStream { impl_clone_raw(&syn::parse(input).unwrap()) } fn impl_clone_raw(ast: &DeriveInput) -> TokenStream { let name = &ast.ident; let generics = &ast.generics; let gen = quote! { impl #generics crate::ffi::CloneRaw<#name #generics> for #name #generics {} }; gen.into() } #[proc_macro_derive(AsRaw)] pub fn as_raw_macro_derive(input: TokenStream) -> TokenStream { impl_as_raw(&syn::parse(input).unwrap()) } fn impl_as_raw(ast: &DeriveInput) -> TokenStream { let name = &ast.ident; let generics = &ast.generics; let gen = quote! { impl #generics crate::ffi::AsRaw for #name #generics {} }; gen.into() } #[proc_macro_derive(BuilderDelegate)] pub fn builder_delegate_macro_derive(input: TokenStream) -> TokenStream { impl_builder_delegate(&syn::parse(input).unwrap()) } fn impl_builder_delegate(ast: &DeriveInput) -> TokenStream { let name = &ast.ident; let builder: Ident = syn::parse_str(&format!("{}Builder", name)).unwrap(); let generics = &ast.generics; let gen = quote! { impl #generics crate::prelude::BuilderDelegate<#builder #generics> for #name #generics {} }; gen.into() }