| /* |
| * Copyright 2003-2007 the original author or authors. |
| * |
| * 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 groovy.lang; |
| |
| import java.util.List; |
| |
| /** |
| * Represents the interface of a Range implementation which includes the |
| * from and to values. |
| * |
| * @author <a href="mailto:james@coredevelopers.net">James Strachan</a> |
| * @version $Revision$ |
| */ |
| public interface Range extends List { |
| /** |
| * Gets the lower value in the range. |
| * |
| * @return the lower value in the range. |
| */ |
| Comparable getFrom(); |
| |
| /** |
| * Gets the lower value in the range. |
| * |
| * @return the upper value in the range |
| */ |
| Comparable getTo(); |
| |
| /** |
| * Indicates whether this is a reverse range which iterates backwards |
| * starting from the to value and ending on the from value |
| * |
| * @return <code>true</code> if this is a reverse range |
| */ |
| boolean isReverse(); |
| |
| /** |
| * Indicates whether this is a reverse range which iterates backwards |
| * starting from the to value and ending on the from value |
| * |
| * @param o the object to check against the boundaries of the range |
| * @return <code>true</code> if the object is between the from and to values |
| */ |
| boolean containsWithinBounds(Object o); |
| |
| /** |
| * Steps through the range, calling a closure for each number. |
| * |
| * @param step the amount by which to step. If negative, steps through the |
| * range backwards. |
| * @param closure the {@link Closure} to call |
| */ |
| void step(int step, Closure closure); |
| |
| /** |
| * Forms a list by stepping through the range by the indicated interval. |
| * |
| * @param step the amount by which to step. If negative, steps through the |
| * range backwards. |
| * @return the list formed by stepping through the range by the indicated |
| * interval. |
| */ |
| List step(int step); |
| |
| /** |
| * @return the verbose {@link String} representation of this {@link Range} as would be typed into a console |
| * to create the {@link Range} instance |
| */ |
| String inspect(); |
| } |