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use std::convert::TryFrom;
use darling::FromDeriveInput;
use proc_macro2::Span;
use quote::quote;
use standard::standard_objects;
use syn::DeriveInput;
mod collection;
mod custom_properties;
mod plurals;
mod relationship;
mod standard;
mod stix_crate_path;
mod typed_object;
mod vocab;
pub(crate) use collection::{Collection, Variant};
pub(crate) use plurals::pluralize;
pub(crate) use relationship::Relationship;
pub(crate) use stix_crate_path::StixCratePath;
use typed_object::TypedObject;
#[proc_macro_derive(TypedObject, attributes(typed_object))]
pub fn derive_typed_object(input: proc_macro::TokenStream) -> proc_macro::TokenStream {
let tokens = match TypedObject::from_derive_input(&syn::parse_macro_input!(input)) {
Ok(v) => quote!(#v),
Err(e) => e.write_errors(),
};
tokens.into()
}
#[proc_macro_derive(Collection, attributes(stix))]
pub fn derive_collection(input: proc_macro::TokenStream) -> proc_macro::TokenStream {
let tokens = match Collection::from_derive_input(&syn::parse_macro_input!(input)) {
Ok(v) => quote!(#v),
Err(e) => e.write_errors(),
};
tokens.into()
}
#[proc_macro]
pub fn vocabulary(input: proc_macro::TokenStream) -> proc_macro::TokenStream {
let input = syn::parse_macro_input!(input as vocab::Item);
let tokens = match vocab::Vocab::try_from(input) {
Ok(v) => quote!(#v),
Err(e) => e.write_errors(),
};
tokens.into()
}
#[proc_macro_attribute]
pub fn declaration(
_attr: proc_macro::TokenStream,
item: proc_macro::TokenStream,
) -> proc_macro::TokenStream {
let mut input: DeriveInput = syn::parse_macro_input!(item);
let mut di = match Collection::from_derive_input(&input) {
Ok(v) => v,
Err(e) => {
return e.write_errors().into();
}
};
let standard_variants = standard_objects(di.stix_crate_path());
let variants_to_insert = di.add_variants(standard_variants.clone());
input.attrs.retain(|attr| !attr.path.is_ident("stix"));
if let syn::Data::Enum(data) = &mut input.data {
for variant in &mut data.variants {
variant.attrs.retain(|attr| !attr.path.is_ident("stix"));
}
for variant in standard_variants {
if !variants_to_insert.contains(&variant.ident) {
continue;
}
let ty = variant.ty().unwrap().clone();
data.variants.push(syn::Variant {
attrs: vec![],
discriminant: None,
ident: variant.ident,
fields: syn::Fields::Unnamed(syn::FieldsUnnamed {
paren_token: syn::token::Paren(Span::call_site()),
unnamed: {
let mut sequence = syn::punctuated::Punctuated::new();
sequence.push(syn::Field {
attrs: vec![],
colon_token: None,
ident: None,
ty,
vis: syn::Visibility::Inherited,
});
sequence
},
}),
});
}
} else {
panic!("Structs are not valid macro targets");
}
quote!(#input #di).into()
}
#[proc_macro_attribute]
pub fn custom_properties(
attr: proc_macro::TokenStream,
item: proc_macro::TokenStream,
) -> proc_macro::TokenStream {
let tokens = match custom_properties::custom_properties(
syn::parse_macro_input!(attr),
syn::parse_macro_input!(item),
) {
Ok(v) => quote!(#v),
Err(e) => e.write_errors(),
};
tokens.into()
}