| /* |
| * Copyright 2000-2012 JetBrains s.r.o. |
| * |
| * 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. |
| */ |
| package org.jetbrains.jps.incremental.storage; |
| |
| import java.io.DataOutput; |
| import java.io.IOException; |
| |
| /** |
| * Instances of this class are associated with the files processed by compilers. |
| * A file is considered modified if currently associated ValidityState differs from the previously stored ValiditySate for this file. |
| */ |
| public interface ValidityState { |
| /** |
| * Compares this validity state to other ValidityState. |
| * |
| * @param otherState the state to compare with. |
| * @return true if states can be considered equal, false otherwise. |
| */ |
| boolean equalsTo(ValidityState otherState); |
| /** |
| * Invoked by make subsystem in order to store the state. |
| * |
| * @param out the output to which the state should be stored. |
| * @throws java.io.IOException if the save operation failed because of an I/O error. |
| */ |
| void save(DataOutput out) throws IOException; |
| } |