| /* |
| * |
| * Copyright 2015 gRPC 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. |
| * |
| */ |
| |
| #import <Foundation/Foundation.h> |
| |
| @interface NSEnumerator (GRXUtil) |
| |
| /** |
| * Returns a NSEnumerator instance that iterates through the elements of the passed container that |
| * supports fast enumeration. Note that this negates the speed benefits of fast enumeration over |
| * NSEnumerator. It's only intended for the rare cases when one needs the latter and only has the |
| * former, e.g. for iteration that needs to be paused and resumed later. |
| */ |
| + (NSEnumerator *)grx_enumeratorWithContainer:(id<NSFastEnumeration>)container; |
| |
| /** |
| * Returns a NSEnumerator instance that provides a single object before finishing. The value is then |
| * released. |
| */ |
| + (NSEnumerator *)grx_enumeratorWithSingleValue:(id)value; |
| |
| /** |
| * Returns a NSEnumerator instance that delegates the invocations of nextObject to the passed block. |
| * When the block first returns nil, it is released. |
| */ |
| + (NSEnumerator *)grx_enumeratorWithValueSupplier:(id (^)(void))block; |
| @end |
