1 #region Copyright notice and license 2 // Protocol Buffers - Google's data interchange format 3 // Copyright 2008 Google Inc. All rights reserved. 4 // https://developers.google.com/protocol-buffers/ 5 // 6 // Redistribution and use in source and binary forms, with or without 7 // modification, are permitted provided that the following conditions are 8 // met: 9 // 10 // * Redistributions of source code must retain the above copyright 11 // notice, this list of conditions and the following disclaimer. 12 // * Redistributions in binary form must reproduce the above 13 // copyright notice, this list of conditions and the following disclaimer 14 // in the documentation and/or other materials provided with the 15 // distribution. 16 // * Neither the name of Google Inc. nor the names of its 17 // contributors may be used to endorse or promote products derived from 18 // this software without specific prior written permission. 19 // 20 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 21 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 23 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 24 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 25 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 26 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 28 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 30 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31 #endregion 32 33 using System; 34 using System.Collections; 35 36 namespace Google.Protobuf.Reflection 37 { 38 /// <summary> 39 /// Allows fields to be reflectively accessed. 40 /// </summary> 41 public interface IFieldAccessor 42 { 43 /// <summary> 44 /// Returns the descriptor associated with this field. 45 /// </summary> 46 FieldDescriptor Descriptor { get; } 47 48 /// <summary> 49 /// Clears the field in the specified message. (For repeated fields, 50 /// this clears the list.) 51 /// </summary> Clear(IMessage message)52 void Clear(IMessage message); 53 54 /// <summary> 55 /// Fetches the field value. For repeated values, this will be an 56 /// <see cref="IList"/> implementation. For map values, this will be an 57 /// <see cref="IDictionary"/> implementation. 58 /// </summary> GetValue(IMessage message)59 object GetValue(IMessage message); 60 61 /// <summary> 62 /// Mutator for single "simple" fields only. 63 /// </summary> 64 /// <remarks> 65 /// Repeated fields are mutated by fetching the value and manipulating it as a list. 66 /// Map fields are mutated by fetching the value and manipulating it as a dictionary. 67 /// </remarks> 68 /// <exception cref="InvalidOperationException">The field is not a "simple" field.</exception> SetValue(IMessage message, object value)69 void SetValue(IMessage message, object value); 70 } 71 }