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1 // Protocol Buffers - Google's data interchange format
2 // Copyright 2008 Google Inc.  All rights reserved.
3 // https://developers.google.com/protocol-buffers/
4 //
5 // Redistribution and use in source and binary forms, with or without
6 // modification, are permitted provided that the following conditions are
7 // met:
8 //
9 //     * Redistributions of source code must retain the above copyright
10 // notice, this list of conditions and the following disclaimer.
11 //     * Redistributions in binary form must reproduce the above
12 // copyright notice, this list of conditions and the following disclaimer
13 // in the documentation and/or other materials provided with the
14 // distribution.
15 //     * Neither the name of Google Inc. nor the names of its
16 // contributors may be used to endorse or promote products derived from
17 // this software without specific prior written permission.
18 //
19 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
21 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
23 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
25 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 
31 #import <Foundation/Foundation.h>
32 
33 @class GPBUnknownField;
34 
35 NS_ASSUME_NONNULL_BEGIN
36 
37 /// A collection of unknown fields.
38 @interface GPBUnknownFieldSet : NSObject<NSCopying>
39 
40 /// Tests to see if the given field number has a value.
41 ///
42 /// @param number The field number to check.
43 ///
44 /// @return YES if there is an unknown field for the given field number.
45 - (BOOL)hasField:(int32_t)number;
46 
47 /// Fetches the @c GPBUnknownField for the given field number.
48 ///
49 /// @param number The field number to look up.
50 ///
51 /// @return The @c GPBUnknownField or nil.
52 - (nullable GPBUnknownField *)getField:(int32_t)number;
53 
54 /// Returns the number of fields in this set.
55 - (NSUInteger)countOfFields;
56 
57 /// Adds the given field to the set.
58 - (void)addField:(GPBUnknownField *)field;
59 
60 /// Returns an NSArray of the @c GPBUnknownFields sorted by the field numbers.
61 - (NSArray<GPBUnknownField*> *)sortedFields;
62 
63 @end
64 
65 NS_ASSUME_NONNULL_END
66