pcp/variable/memory/
ops.rs

1// Copyright 2016 Pierre Talbot (IRCAM)
2
3// Licensed under the Apache License, Version 2.0 (the "License");
4// you may not use this file except in compliance with the License.
5// You may obtain a copy of the License at
6
7//     http://www.apache.org/licenses/LICENSE-2.0
8
9// Unless required by applicable law or agreed to in writing, software
10// distributed under the License is distributed on an "AS IS" BASIS,
11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12// See the License for the specific language governing permissions and
13// limitations under the License.
14
15use gcollections::kind::*;
16
17pub trait TrailVariable : AssociativeCollection
18{
19  fn trail_variable(&mut self, loc: Self::Location, value: Self::Item);
20}
21
22pub trait TrailRestoration : Collection
23{
24  type Mark;
25  fn commit(&mut self) {}
26  fn mark(&mut self) -> Self::Mark;
27  fn undo(&mut self, mark: Self::Mark, memory: &mut Vec<Self::Item>);
28}