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#![recursion_limit="256"]

extern crate proc_macro;
extern crate proc_macro2;
#[macro_use] extern crate quote;
#[macro_use] extern crate syn;
extern crate rinecs_derive_utils;
extern crate proc_macro_crate;

use proc_macro::TokenStream;
use syn::DeriveInput;
use rinecs_derive_utils::system::{self, SystemType};
#[cfg(not(feature="force_rinecs_cratename"))]
use proc_macro_crate::crate_name;
#[cfg(not(feature="force_rinecs_cratename"))]
use proc_macro2::Span;
use rinecs_derive_utils::system::SystemResourcesTy;

mod filter;
mod debug;
mod component;
mod hierarchical;
mod oneton;
mod hierarchical_oneton;
mod changes;
mod debug_param_fn;
mod onetoone;

#[cfg(not(feature="force_rinecs_cratename"))]
fn rinecs_crate_name() -> syn::Result<syn::Path> {
    let crate_name: String = crate_name("rinecs")
        .or(crate_name("rin").map(|rin| rin + "::ecs"))
        .unwrap_or("rin::ecs".to_string());
        // .map_err(|err| syn::Error::new(Span::call_site(), err))?;
    syn::parse_str(&crate_name)
}

#[cfg(feature="force_rinecs_cratename")]
fn rinecs_crate_name() -> syn::Result<syn::Path> {
    syn::parse_str("rinecs")
}

#[proc_macro_derive(Filter)]
pub fn filter(input: TokenStream) -> TokenStream {
    filter::impl_filter(input)
}

#[proc_macro_derive(Component, attributes(storage, debug_as_string, debug_custom, changes, autochanges))]
pub fn component(input: TokenStream) -> TokenStream {
    let ast = parse_macro_input!(input as DeriveInput);
    let gen = component::impl_component(&ast, false);
    TokenStream::from(gen)
}

#[proc_macro_derive(Tag)]
pub fn tag(input: TokenStream) -> TokenStream {
    let ast = parse_macro_input!(input as DeriveInput);
    let gen = component::impl_tag(&ast);
    TokenStream::from(gen)
}

#[proc_macro_derive(NToOneComponent, attributes(storage, debug_as_string, debug_custom, changes, autochanges))]
pub fn ntoone_component(input: TokenStream) -> TokenStream {
    let ast = parse_macro_input!(input as DeriveInput);
    let gen = component::impl_component(&ast, true);
    let gen_ntoone = component::impl_ntoone_component(&ast);
    TokenStream::from(gen.into_iter().chain(gen_ntoone.into_iter()).collect::<proc_macro2::TokenStream>())
}

#[proc_macro_derive(OneToOneComponent, attributes(storage, debug_as_string, debug_custom, changes, autochanges))]
pub fn onetoone_component(input: TokenStream) -> TokenStream {
    let ast = parse_macro_input!(input as DeriveInput);
    let gen = onetoone::impl_one_to_one_component(&ast);
    TokenStream::from(gen)
}

#[proc_macro_derive(HierarchicalComponent, attributes(debug_as_string, debug_custom, storage, changes, autochanges))]
pub fn hierarchical_component(input: TokenStream) -> TokenStream {
    let ast = parse_macro_input!(input as DeriveInput);
    let gen = hierarchical::impl_hierarchical_component(&ast);
    TokenStream::from(gen)
}

#[proc_macro_derive(OneToNComponent, attributes(debug_as_string, debug_custom, storage, changes, autochanges))]
pub fn one_to_n_component(input: TokenStream) -> TokenStream {
    let ast = parse_macro_input!(input as DeriveInput);
    let gen = oneton::impl_one_to_n_component(&ast);
    TokenStream::from(gen)
}

#[proc_macro_derive(HierarchicalOneToNComponent, attributes(debug_as_string, debug_custom))]
pub fn hierarchical_one_to_n_component(input: TokenStream) -> TokenStream {
    let ast = parse_macro_input!(input as DeriveInput);
    let gen = hierarchical_oneton::impl_hierarchical_one_to_n_component(&ast);
    TokenStream::from(gen)
}

#[proc_macro_attribute]
pub fn system(args: TokenStream, input: TokenStream) -> TokenStream{
    system::impl_any_system(args, input, SystemType::Send, SystemResourcesTy::EntitiesResources)
}

#[proc_macro_attribute]
pub fn system_foreach(args: TokenStream, input: TokenStream) -> TokenStream{
    system::impl_any_system(args, input, SystemType::Send, SystemResourcesTy::ForEach)
}

#[proc_macro_attribute]
pub fn system_storages(args: TokenStream, input: TokenStream) -> TokenStream{
    system::impl_any_system(args, input, SystemType::Send, SystemResourcesTy::Storages)
}

#[proc_macro_attribute]
pub fn system_once(args: TokenStream, input: TokenStream) -> TokenStream{
    system::impl_any_system(args, input, SystemType::SendOnce, SystemResourcesTy::EntitiesResources)
}

#[proc_macro_attribute]
pub fn system_foreach_once(args: TokenStream, input: TokenStream) -> TokenStream{
    system::impl_any_system(args, input, SystemType::SendOnce, SystemResourcesTy::ForEach)
}

#[proc_macro_attribute]
pub fn system_foreach_storages(args: TokenStream, input: TokenStream) -> TokenStream{
    system::impl_any_system(args, input, SystemType::SendOnce, SystemResourcesTy::Storages)
}

#[proc_macro_attribute]
pub fn system_thread_local(args: TokenStream, input: TokenStream) -> TokenStream{
    system::impl_any_system(args, input, SystemType::ThreadLocal, SystemResourcesTy::EntitiesResources)
}

#[proc_macro_attribute]
pub fn system_thread_local_foreach(args: TokenStream, input: TokenStream) -> TokenStream{
    system::impl_any_system(args, input, SystemType::ThreadLocal, SystemResourcesTy::ForEach)
}

#[proc_macro_attribute]
pub fn system_thread_local_storages(args: TokenStream, input: TokenStream) -> TokenStream{
    system::impl_any_system(args, input, SystemType::ThreadLocal, SystemResourcesTy::Storages)
}

#[proc_macro_attribute]
pub fn system_once_thread_local(args: TokenStream, input: TokenStream) -> TokenStream{
    system::impl_any_system(args, input, SystemType::ThreadLocalOnce, SystemResourcesTy::EntitiesResources)
}

#[proc_macro_attribute]
pub fn system_once_thread_local_foreach(args: TokenStream, input: TokenStream) -> TokenStream{
    system::impl_any_system(args, input, SystemType::ThreadLocalOnce, SystemResourcesTy::ForEach)
}

#[proc_macro_attribute]
pub fn system_once_thread_local_storages(args: TokenStream, input: TokenStream) -> TokenStream{
    system::impl_any_system(args, input, SystemType::ThreadLocalOnce, SystemResourcesTy::Storages)
}

#[proc_macro_attribute]
pub fn creation_system(args: TokenStream, input: TokenStream) -> TokenStream{
    system::impl_any_system(args, input, SystemType::Creation, SystemResourcesTy::EntitiesResources)
}

// #[proc_macro_attribute]
// pub fn creation_system_foreach(args: TokenStream, input: TokenStream) -> TokenStream{
//     system::impl_any_system(args, input, SystemType::Creation, SystemResourcesTy::ForEach)
// }

#[proc_macro_attribute]
pub fn creation_system_storages(args: TokenStream, input: TokenStream) -> TokenStream{
    system::impl_any_system(args, input, SystemType::Creation, SystemResourcesTy::Storages)
}

#[proc_macro_attribute]
pub fn barrier(args: TokenStream, input: TokenStream) -> TokenStream {
    system::impl_barrier(args, input)
}

#[proc_macro_attribute]
pub fn debug_param_fn(args: TokenStream, input: TokenStream) -> TokenStream {
    debug_param_fn::impl_debug_param_fn(args, input)
}