1/*
2 *
3 * Copyright 2015 gRPC authors.
4 *
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
8 *
9 *     http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 *
17 */
18
19#import "NSEnumerator+GRXUtil.h"
20
21#import "private/GRXNSBlockEnumerator.h"
22#import "private/GRXNSFastEnumerator.h"
23#import "private/GRXNSScalarEnumerator.h"
24
25@implementation NSEnumerator (GRXUtil)
26
27+ (NSEnumerator *)grx_enumeratorWithContainer:(id<NSFastEnumeration>)container {
28  // TODO(jcanizales): Consider checking if container responds to objectEnumerator and return that?
29  return [[GRXNSFastEnumerator alloc] initWithContainer:container];
30}
31
32+ (NSEnumerator *)grx_enumeratorWithSingleValue:(id)value {
33  return [[GRXNSScalarEnumerator alloc] initWithValue:value];
34}
35
36+ (NSEnumerator *)grx_enumeratorWithValueSupplier:(id (^)(void))block {
37  return [[GRXNSBlockEnumerator alloc] initWithValueSupplier:block];
38}
39@end
40