/*
* Copyright 2003-2016 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.mps.util;
public interface Condition<T> {
boolean met(T object);
Condition TRUE_CONDITION = object -> true;
Condition FALSE_CONDITION = object -> false;
/**
* Typed/checked alternative to {@link #TRUE_CONDITION}
*/
static <T> Condition<T> always() {
return TRUE_CONDITION;
}
/**
* Typed/checked alternative to {@link #FALSE_CONDITION}
*/
static <T> Condition<T> never() {
return FALSE_CONDITION;
}
}