42 lines
1.1 KiB
Rust
42 lines
1.1 KiB
Rust
pub mod expand_enum;
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pub mod expand_struct;
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use attribute;
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use proc_macro2::{Span, TokenStream};
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use syn;
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use syn::Ident;
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pub fn expand_derive_deserialize(ast: &syn::DeriveInput) -> Result<TokenStream, String> {
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let name = &ast.ident;
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let attrs = &ast.attrs;
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let data = &ast.data;
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let root_attrs = attribute::YaSerdeAttribute::parse(attrs);
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let root = root_attrs.clone().root.unwrap_or_else(|| name.to_string());
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let impl_block = match *data {
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syn::Data::Struct(ref data_struct) => {
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expand_struct::parse(data_struct, name, &root, &root_attrs.namespaces)
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}
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syn::Data::Enum(ref data_enum) => {
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expand_enum::parse(data_enum, name, &root, &root_attrs.namespaces)
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}
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syn::Data::Union(ref _data_union) => unimplemented!(),
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};
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let dummy_const = Ident::new(
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&format!("_IMPL_YA_DESERIALIZE_FOR_{}", name),
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Span::call_site(),
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);
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let generated = quote! {
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#[allow(non_upper_case_globals, unused_attributes, unused_qualifications)]
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const #dummy_const: () = {
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extern crate yaserde as _yaserde;
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#impl_block
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};
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};
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Ok(generated)
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}
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