| /* |
| * Copyright 2000-2014 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 com.intellij.openapi.util; |
| |
| import org.jetbrains.annotations.NonNls; |
| |
| /** |
| * Returns {@code true} or {@code false} for the given input object. |
| * <p/> |
| * See {@link Conditions} for chained conditions. |
| * |
| * @author dsl |
| */ |
| public interface Condition<T> { |
| boolean value(T t); |
| |
| Condition<Object> NOT_NULL = new Condition<Object>() { |
| @Override |
| public boolean value(final Object object) { |
| return object != null; |
| } |
| |
| @NonNls |
| @Override |
| public String toString() { |
| return "Condition.NOT_NULL"; |
| } |
| }; |
| |
| /** |
| * @see com.intellij.openapi.util.Conditions#alwaysTrue() |
| */ |
| Condition TRUE = new Condition() { |
| @Override |
| public boolean value(final Object object) { |
| return true; |
| } |
| |
| @NonNls |
| @Override |
| public String toString() { |
| return "Condition.TRUE"; |
| } |
| }; |
| /** |
| * @see com.intellij.openapi.util.Conditions#alwaysFalse() |
| */ |
| Condition FALSE = new Condition() { |
| @Override |
| public boolean value(final Object object) { |
| return false; |
| } |
| |
| @NonNls |
| @Override |
| public String toString() { |
| return "Condition.FALSE"; |
| } |
| }; |
| } |