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#![recursion_limit = "256"] extern crate proc_macro; mod read; mod types; mod utils; mod write; use proc_macro::TokenStream; use quote::quote; use syn::{parse_macro_input, DeriveInput}; use types::Element; #[proc_macro_derive(XmlRead, attributes(xml))] pub fn derive_xml_read(input: TokenStream) -> TokenStream { let input = parse_macro_input!(input as DeriveInput); let name = &input.ident; let generics = &input.generics; let params = &generics.params; let where_clause = &generics.where_clause; let input_lifetime = utils::gen_input_lifetime(&generics); let mut params_with_input_lifetime = generics.params.clone(); params_with_input_lifetime.insert(0, input_lifetime.into()); let impl_read = read::impl_read(Element::parse(input.clone())); let gen = quote! { impl <#params_with_input_lifetime> strong_xml::XmlRead<'__input> for #name <#params> #where_clause { fn from_reader( mut reader: &mut strong_xml::XmlReader<'__input> ) -> strong_xml::XmlResult<Self> { use strong_xml::xmlparser::{ElementEnd, Token, Tokenizer}; use strong_xml::XmlError; #impl_read } } }; gen.into() } #[proc_macro_derive(XmlWrite, attributes(xml))] pub fn derive_xml_write(input: TokenStream) -> TokenStream { let input = parse_macro_input!(input as DeriveInput); let name = &input.ident; let generics = &input.generics; let params = &generics.params; let where_clause = &generics.where_clause; let impl_write = write::impl_write(Element::parse(input.clone())); let gen = quote! { impl <#params> strong_xml::XmlWrite for #name <#params> #where_clause { fn to_writer<W: std::io::Write>( &self, mut writer: &mut strong_xml::XmlWriter<W> ) -> strong_xml::XmlResult<()> { #impl_write Ok(()) } } }; gen.into() }