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// Copyright 2016 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.

use kind::*;

pub trait Alloc: AssociativeCollection
{
  fn alloc(&mut self, value: Self::Item) -> Self::Location;
}

/// Returns the value previously at location `loc`.
pub trait Replace: AssociativeCollection
{
  fn replace(&mut self, loc: Self::Location, value: Self::Item) -> Self::Item;
}