qecs-core 0.0.17

Soon to be highly flexible Entity-Component-System framework, core lib.
use service::ServiceBase;
use store::StoreBase;
use id_manager::PrimaryIdManager;
use buffer::BufferBase;
use idmgr_mode;

use ioc::{Ioc, InvocationMethod};

use std::fmt::Debug;
use std::sync::RwLock;

pub trait ProcessBase<IdMgr, Key, StoBase: ?Sized, BufBase: ?Sized, SerBase: ?Sized>: ServiceBase
where 
    IdMgr: PrimaryIdManager,
    Key: Debug + Ord,
    StoBase: StoreBase<Id = IdMgr::Id>,
    BufBase: BufferBase,
    SerBase: ServiceBase,
{
    fn _update(
        &mut self, 
        ids: &RwLock<IdMgr>,
        stores: &Ioc<Key, StoBase>,
        buffer: &Ioc<Key, BufBase>,
        services: &Ioc<Key, SerBase>,
    );
}

pub trait Process<'a, IdMgr, Key, StoBase: ?Sized, BufBase: ?Sized, SerBase: ?Sized, >: ServiceBase
where
    IdMgr: PrimaryIdManager,
    Key: Debug + Ord,
    StoBase: StoreBase<Id = IdMgr::Id>,
    BufBase: BufferBase,
    SerBase: ServiceBase,
{
    type IdMgrMode: idmgr_mode::IdMgrMode<'a, IdMgr>;
    type StoreSelection: InvocationMethod<'a, Key, StoBase>;
    type BufferSelection: InvocationMethod<'a, Key, BufBase>;
    type ServiceSelection: InvocationMethod<'a, Key, SerBase>;

    type IdMgr = <Self::IdMgrMode as idmgr_mode::IdMgrMode<'a, IdMgr>>::Ret;
    type Stores = <Self::StoreSelection as InvocationMethod<'a, Key, StoBase>>::Ret;
    type Buffers = <Self::BufferSelection as InvocationMethod<'a, Key, BufBase>>::Ret;
    type Services = <Self::ServiceSelection as InvocationMethod<'a, Key, SerBase>>::Ret;
 
    fn update(
        &mut self, 
        ids: <Self::IdMgrMode as idmgr_mode::IdMgrMode<'a, IdMgr>>::Ret, 
        stores: <Self::StoreSelection as InvocationMethod<'a, Key, StoBase>>::Ret,
        buffer: <Self::BufferSelection as InvocationMethod<'a, Key, BufBase>>::Ret,
        services: <Self::ServiceSelection as InvocationMethod<'a, Key, SerBase>>::Ret,
    );
}

impl<T, IdMgr, Key, StoBase: ?Sized, BufBase: ?Sized, SerBase: ?Sized> ProcessBase<IdMgr, Key, StoBase, BufBase, SerBase> for T 
where
    IdMgr: PrimaryIdManager,
    Key: Debug + Ord,
    StoBase: StoreBase<Id = IdMgr::Id>,
    BufBase: BufferBase,
    SerBase: ServiceBase,
    T: for<'a> Process<'a, IdMgr, Key, StoBase, BufBase, SerBase>,

    //FIXME remove this
    for<'a> <<T as Process<'a, IdMgr, Key, StoBase, BufBase, SerBase>>::StoreSelection as InvocationMethod<'a, Key, StoBase>>::Args: Default,
    for<'a> <<T as Process<'a, IdMgr, Key, StoBase, BufBase, SerBase>>::BufferSelection as InvocationMethod<'a, Key, BufBase>>::Args: Default,
    for<'a> <<T as Process<'a, IdMgr, Key, StoBase, BufBase, SerBase>>::ServiceSelection as InvocationMethod<'a, Key, SerBase>>::Args: Default,
{
    fn _update(
        &mut self, 
        ids: &RwLock<IdMgr>,
        stores: &Ioc<Key, StoBase>,
        buffers: &Ioc<Key, BufBase>,
        services: &Ioc<Key, SerBase>,
    ){
        use std::mem;

        // FIXME ugly hack... just need to generate lists of nils... no variadic generics yet
        assert_eq!(0, mem::size_of::<<T::StoreSelection as InvocationMethod<_, _>>::Args>());
        assert_eq!(0, mem::size_of::<<T::BufferSelection as InvocationMethod<_, _>>::Args>());
        assert_eq!(0, mem::size_of::<<T::ServiceSelection as InvocationMethod<_, _>>::Args>());
        
        self.update(
            <T::IdMgrMode as idmgr_mode::IdMgrMode<IdMgr>>::retrieve(ids),
            stores.invoke::<T::StoreSelection>(Default::default()).unwrap(),
            buffers.invoke::<T::BufferSelection>(Default::default()).unwrap(),
            services.invoke::<T::ServiceSelection>(Default::default()).unwrap(),
        );
    }
}

// TODO newtype-impl