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// Protocol Buffers - Google's data interchange format
// Copyright 2008 Google Inc.
// http://code.google.com/p/protobuf/
//
// 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.
namespace Google.ProtocolBuffers.FieldAccess {
/// <summary>
/// Allows fields to be reflectively accessed in a smart manner.
/// The property descriptors for each field are created once and then cached.
/// In addition, this interface holds knowledge of repeated fields, builders etc.
/// </summary>
internal interface IFieldAccessor<TMessage, TBuilder>
where TMessage : IMessage<TMessage, TBuilder>
where TBuilder : IBuilder<TMessage, TBuilder> {
/// <summary>
/// Indicates whether the specified message contains the field.
/// </summary>
bool Has(TMessage message);
/// <summary>
/// Gets the count of the repeated field in the specified message.
/// </summary>
int GetRepeatedCount(TMessage message);
/// <summary>
/// Clears the field in the specified builder.
/// </summary>
/// <param name="builder"></param>
void Clear(TBuilder builder);
/// <summary>
/// Creates a builder for the type of this field (which must be a message field).
/// </summary>
IBuilder CreateBuilder();
/// <summary>
/// Accessor for single fields
/// </summary>
object GetValue(TMessage message);
/// <summary>
/// Mutator for single fields
/// </summary>
void SetValue(TBuilder builder, object value);
/// <summary>
/// Accessor for repeated fields
/// </summary>
object GetRepeatedValue(TMessage message, int index);
/// <summary>
/// Mutator for repeated fields
/// </summary>
void SetRepeated(TBuilder builder, int index, object value);
/// <summary>
/// Adds the specified value to the field in the given builder.
/// </summary>
void AddRepeated(TBuilder builder, object value);
/// <summary>
/// Returns a read-only wrapper around the value of a repeated field.
/// </summary>
object GetRepeatedWrapper(TBuilder builder);
}
}
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