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// Copyright 2015 Pierre Talbot (IRCAM)

// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at

//     http://www.apache.org/licenses/LICENSE-2.0

// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

pub use search::recomputation::*;
use trilean::SKleene;
use kernel::*;
use gcollections::ops::*;
use std::marker::PhantomData;

pub struct Space<VStore, CStore, Restoration> {
  pub vstore: VStore,
  pub cstore: CStore,
  phantom_restoration: PhantomData<Restoration>
}

impl<VStore, CStore, Restoration> Space<VStore, CStore, Restoration>
{
  pub fn new(vstore: VStore, cstore: CStore) -> Self {
    Space {
      vstore: vstore,
      cstore: cstore,
      phantom_restoration: PhantomData
    }
  }
}

impl<VStore, CStore, Restoration> Space<VStore, CStore, Restoration> where
  CStore: Consistency<VStore>
{
  pub fn consistency(&mut self) -> SKleene {
    self.cstore.consistency(&mut self.vstore)
  }
}

impl<VStore, CStore, Restoration> Empty for Space<VStore, CStore, Restoration> where
  VStore: Empty,
  CStore: Empty
{
  fn empty() -> Self {
    Space::new(VStore::empty(), CStore::empty())
  }
}

impl<VStore, CStore, Restoration> Freeze for Space<VStore, CStore, Restoration> where
 VStore: Freeze,
 CStore: Freeze,
 Restoration: FreezeSpace<VStore, CStore> + Snapshot<State=Space<VStore, CStore, Restoration>>
{
  type FrozenState = Restoration;
  fn freeze(self) -> Self::FrozenState
  {
    Restoration::freeze_space(self.vstore, self.cstore)
  }
}