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#![deny(clippy::all)]
#![deny(clippy::pedantic)]
use proc_macro::TokenStream;
use quote::quote;
use syn::{parse, parse_macro_input};
mod declare_interface_args;
mod factory_type_alias;
mod injectable_impl;
mod injectable_macro_args;
mod libs;
use declare_interface_args::DeclareInterfaceArgs;
use factory_type_alias::FactoryTypeAlias;
use injectable_impl::InjectableImpl;
use injectable_macro_args::InjectableMacroArgs;
use libs::intertrait_macros::gen_caster::generate_caster;
/// Makes a struct injectable. Thereby usable with `DIContainer`.
///
/// # Arguments
/// * A interface trait the struct implements.
///
/// # Panics
/// If the attributed item is not a impl.
#[proc_macro_attribute]
pub fn injectable(args_stream: TokenStream, impl_stream: TokenStream) -> TokenStream
{
let InjectableMacroArgs {
interface: interface_type_path,
} = parse_macro_input!(args_stream);
let injectable_impl: InjectableImpl = parse(impl_stream).unwrap();
let expanded_injectable_impl = injectable_impl.expand();
let self_type = &injectable_impl.self_type;
quote! {
#expanded_injectable_impl
syrette::declare_interface!(#self_type -> #interface_type_path);
}
.into()
}
/// Makes a type alias usable as a factory interface.
///
/// # Panics
/// If the attributed item is not a type alias.
#[proc_macro_attribute]
pub fn factory(_: TokenStream, type_alias_stream: TokenStream) -> TokenStream
{
let FactoryTypeAlias {
type_alias,
factory_interface,
arg_types,
return_type,
} = parse(type_alias_stream).unwrap();
quote! {
#type_alias
syrette::declare_interface!(
syrette::castable_factory::CastableFactory<
#arg_types,
#return_type
> -> #factory_interface
);
syrette::declare_interface!(
syrette::castable_factory::CastableFactory<
#arg_types,
#return_type
> -> syrette::castable_factory::AnyFactory
);
}
.into()
}
/// Declares the interface trait of a implementation.
///
/// # Arguments
/// {Implementation} -> {Interface}
///
#[proc_macro]
pub fn declare_interface(input: TokenStream) -> TokenStream
{
let DeclareInterfaceArgs {
implementation,
interface,
} = parse_macro_input!(input);
generate_caster(&implementation, &interface).into()
}
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