use super::{TypeInfo, WorkloadSystem};
use crate::all_storages::AllStorages;
use crate::borrow::{Borrow, BorrowInfo, IntoBorrow, Mutability};
use crate::error;
use crate::storage::StorageId;
use crate::type_id::TypeId;
use crate::World;
use alloc::boxed::Box;
use alloc::vec::Vec;
use core::any::type_name;
#[cfg(not(feature = "std"))]
use core::any::Any;
#[cfg(feature = "std")]
use std::error::Error;
pub trait IntoWorkloadSystem<B, R> {
fn into_workload_system(self) -> Result<WorkloadSystem, error::InvalidSystem>;
#[cfg(feature = "std")]
fn into_workload_try_system<Ok, Err: Into<Box<dyn Error + Send + Sync>>>(
self,
) -> Result<WorkloadSystem, error::InvalidSystem>
where
R: Into<Result<Ok, Err>>;
#[cfg(not(feature = "std"))]
fn into_workload_try_system<Ok, Err: 'static + Send + Any>(
self,
) -> Result<WorkloadSystem, error::InvalidSystem>
where
R: Into<Result<Ok, Err>>;
}
pub struct Nothing;
impl<R, F> IntoWorkloadSystem<Nothing, R> for F
where
F: 'static + Send + Sync + Fn() -> R,
{
#[allow(clippy::unit_arg)]
fn into_workload_system(self) -> Result<WorkloadSystem, error::InvalidSystem> {
Ok(WorkloadSystem {
borrow_constraints: Vec::new(),
system_fn: Box::new(move |_: &World| Ok(drop((self)()))),
system_type_id: TypeId::of::<F>(),
system_type_name: type_name::<F>(),
generator: |_| TypeId::of::<F>(),
})
}
#[allow(clippy::unit_arg)]
#[cfg(feature = "std")]
fn into_workload_try_system<Ok, Err: Into<Box<dyn Error + Send + Sync>>>(
self,
) -> Result<WorkloadSystem, error::InvalidSystem>
where
R: Into<Result<Ok, Err>>,
{
Ok(WorkloadSystem {
borrow_constraints: Vec::new(),
system_fn: Box::new(move |_: &World| {
Ok(drop((self)().into().map_err(error::Run::from_custom)?))
}),
system_type_id: TypeId::of::<F>(),
system_type_name: type_name::<F>(),
generator: |_| TypeId::of::<F>(),
})
}
#[allow(clippy::unit_arg)]
#[cfg(not(feature = "std"))]
fn into_workload_try_system<Ok, Err: 'static + Send + Any>(
self,
) -> Result<WorkloadSystem, error::InvalidSystem>
where
R: Into<Result<Ok, Err>>,
{
Ok(WorkloadSystem {
borrow_constraints: Vec::new(),
system_fn: Box::new(move |_: &World| {
Ok(drop((self)().into().map_err(error::Run::from_custom)?))
}),
system_type_id: TypeId::of::<F>(),
system_type_name: type_name::<F>(),
generator: |_| TypeId::of::<F>(),
})
}
}
impl IntoWorkloadSystem<(), ()> for WorkloadSystem {
fn into_workload_system(self) -> Result<WorkloadSystem, error::InvalidSystem> {
Ok(self)
}
#[cfg(feature = "std")]
fn into_workload_try_system<Ok, Err>(self) -> Result<WorkloadSystem, error::InvalidSystem> {
Ok(self)
}
#[cfg(not(feature = "std"))]
fn into_workload_try_system<Ok, Err>(self) -> Result<WorkloadSystem, error::InvalidSystem> {
Ok(self)
}
}
macro_rules! impl_system {
($(($type: ident, $index: tt))+) => {
impl<$($type: IntoBorrow + BorrowInfo,)+ R, Func> IntoWorkloadSystem<($($type,)+), R> for Func
where
Func: 'static
+ Send
+ Sync
+ Fn($($type),+) -> R
+ Fn($(<$type::Borrow as Borrow<'_>>::View),+) -> R {
fn into_workload_system(self) -> Result<WorkloadSystem, error::InvalidSystem> {
let mut borrows = Vec::new();
$(
$type::borrow_info(&mut borrows);
)+
if borrows.contains(&TypeInfo {
name: "",
storage_id: StorageId::of::<AllStorages>(),
mutability: Mutability::Exclusive,
is_send: true,
is_sync: true,
}) && borrows.len() > 1
{
return Err(error::InvalidSystem::AllStorages);
}
let mid = borrows.len() / 2 + (borrows.len() % 2 != 0) as usize;
for a_type_info in &borrows[..mid] {
for b_type_info in &borrows[mid..] {
if a_type_info.storage_id == b_type_info.storage_id {
match (a_type_info.mutability, b_type_info.mutability) {
(Mutability::Exclusive, Mutability::Exclusive) => {
return Err(error::InvalidSystem::MultipleViewsMut)
}
(Mutability::Exclusive, Mutability::Shared)
| (Mutability::Shared, Mutability::Exclusive) => {
return Err(error::InvalidSystem::MultipleViews)
}
(Mutability::Shared, Mutability::Shared) => {}
}
}
}
}
Ok(WorkloadSystem {
borrow_constraints: borrows,
system_fn: Box::new(move |world: &World| { Ok(drop((self)($($type::Borrow::borrow(&world)?),+))) }),
system_type_id: TypeId::of::<Func>(),
system_type_name: type_name::<Func>(),
generator: |constraints| {
$(
$type::borrow_info(constraints);
)+
TypeId::of::<Func>()
},
})
}
#[cfg(feature = "std")]
fn into_workload_try_system<Ok, Err: Into<Box<dyn Error + Send + Sync>>>(self) -> Result<WorkloadSystem, error::InvalidSystem> where R: Into<Result<Ok, Err>> {
let mut borrows = Vec::new();
$(
$type::borrow_info(&mut borrows);
)+
if borrows.contains(&TypeInfo {
name: "",
storage_id: StorageId::of::<AllStorages>(),
mutability: Mutability::Exclusive,
is_send: true,
is_sync: true,
}) && borrows.len() > 1
{
return Err(error::InvalidSystem::AllStorages);
}
let mid = borrows.len() / 2 + (borrows.len() % 2 != 0) as usize;
for a_type_info in &borrows[..mid] {
for b_type_info in &borrows[mid..] {
if a_type_info.storage_id == b_type_info.storage_id {
match (a_type_info.mutability, b_type_info.mutability) {
(Mutability::Exclusive, Mutability::Exclusive) => {
return Err(error::InvalidSystem::MultipleViewsMut)
}
(Mutability::Exclusive, Mutability::Shared)
| (Mutability::Shared, Mutability::Exclusive) => {
return Err(error::InvalidSystem::MultipleViews)
}
(Mutability::Shared, Mutability::Shared) => {}
}
}
}
}
Ok(WorkloadSystem {
borrow_constraints: borrows,
system_fn: Box::new(move |world: &World| { Ok(drop((self)($($type::Borrow::borrow(&world)?),+).into().map_err(error::Run::from_custom)?)) }),
system_type_id: TypeId::of::<Func>(),
system_type_name: type_name::<Func>(),
generator: |constraints| {
$(
$type::borrow_info(constraints);
)+
TypeId::of::<Func>()
},
})
}
#[cfg(not(feature = "std"))]
fn into_workload_try_system<Ok, Err: 'static + Send + Any>(self) -> Result<WorkloadSystem, error::InvalidSystem> where R: Into<Result<Ok, Err>> {
let mut borrows = Vec::new();
$(
$type::borrow_info(&mut borrows);
)+
if borrows.contains(&TypeInfo {
name: "",
storage_id: StorageId::of::<AllStorages>(),
mutability: Mutability::Exclusive,
is_send: true,
is_sync: true,
}) && borrows.len() > 1
{
return Err(error::InvalidSystem::AllStorages);
}
let mid = borrows.len() / 2 + (borrows.len() % 2 != 0) as usize;
for a_type_info in &borrows[..mid] {
for b_type_info in &borrows[mid..] {
if a_type_info.storage_id == b_type_info.storage_id {
match (a_type_info.mutability, b_type_info.mutability) {
(Mutability::Exclusive, Mutability::Exclusive) => {
return Err(error::InvalidSystem::MultipleViewsMut)
}
(Mutability::Exclusive, Mutability::Shared)
| (Mutability::Shared, Mutability::Exclusive) => {
return Err(error::InvalidSystem::MultipleViews)
}
(Mutability::Shared, Mutability::Shared) => {}
}
}
}
}
Ok(WorkloadSystem {
borrow_constraints: borrows,
system_fn: Box::new(move |world: &World| { Ok(drop((self)($($type::Borrow::borrow(&world)?),+).into().map_err(error::Run::from_custom)?)) }),
system_type_id: TypeId::of::<Func>(),
system_type_name: type_name::<Func>(),
generator: |constraints| {
$(
$type::borrow_info(constraints);
)+
TypeId::of::<Func>()
},
})
}
}
}
}
macro_rules! system {
($(($type: ident, $index: tt))*;($type1: ident, $index1: tt) $(($queue_type: ident, $queue_index: tt))*) => {
impl_system![$(($type, $index))*];
system![$(($type, $index))* ($type1, $index1); $(($queue_type, $queue_index))*];
};
($(($type: ident, $index: tt))*;) => {
impl_system![$(($type, $index))*];
}
}
system![(A, 0); (B, 1) (C, 2) (D, 3) (E, 4) (F, 5) (G, 6) (H, 7) (I, 8) (J, 9)];