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using System;
using System.Collections.Generic;
using System.Text;
using Google.ProtocolBuffers.Descriptors;
namespace Google.ProtocolBuffers {
public abstract class ExtendableBuilder<TMessage, TBuilder> : GeneratedBuilder<TMessage, TBuilder>
where TMessage : ExtendableMessage<TMessage, TBuilder>
where TBuilder : GeneratedBuilder<TMessage, TBuilder> {
protected ExtendableBuilder() {}
/// <summary>
/// Checks if a singular extension is present
/// </summary>
public bool HasExtension<TExtension>(GeneratedExtensionBase<TExtension> extension) {
return MessageBeingBuilt.HasExtension(extension);
}
/// <summary>
/// Returns the number of elements in a repeated extension.
/// </summary>
public int GetExtensionCount<TExtension>(GeneratedExtensionBase<IList<TExtension>> extension) {
return MessageBeingBuilt.GetExtensionCount(extension);
}
/// <summary>
/// Returns the value of an extension.
/// </summary>
public TExtension GetExtension<TExtension>(GeneratedExtensionBase<TExtension> extension) {
return MessageBeingBuilt.GetExtension(extension);
}
/// <summary>
/// Returns one element of a repeated extension.
/// </summary>
public TExtension GetExtension<TExtension>(GeneratedExtensionBase<IList<TExtension>> extension, int index) {
return MessageBeingBuilt.GetExtension(extension, index);
}
/// <summary>
/// Sets the value of an extension.
/// </summary>
public TBuilder SetExtension<TExtension>(GeneratedExtensionBase<TExtension> extension, TExtension value) {
ExtendableMessage<TMessage, TBuilder> message = MessageBeingBuilt;
message.VerifyExtensionContainingType(extension);
message.Extensions[extension.Descriptor] = extension.ToReflectionType(value);
return ThisBuilder;
}
/// <summary>
/// Sets the value of one element of a repeated extension.
/// </summary>
public TBuilder SetExtension<TExtension>(GeneratedExtensionBase<IList<TExtension>> extension, int index, TExtension value) {
ExtendableMessage<TMessage, TBuilder> message = MessageBeingBuilt;
message.VerifyExtensionContainingType(extension);
message.Extensions[extension.Descriptor, index] = extension.SingularToReflectionType(value);
return ThisBuilder;
}
/// <summary>
/// Appends a value to a repeated extension.
/// </summary>
public ExtendableBuilder<TMessage, TBuilder> AddExtension<TExtension>(GeneratedExtensionBase<IList<TExtension>> extension, TExtension value) {
ExtendableMessage<TMessage, TBuilder> message = MessageBeingBuilt;
message.VerifyExtensionContainingType(extension);
message.Extensions.AddRepeatedField(extension.Descriptor, extension.SingularToReflectionType(value));
return this;
}
/// <summary>
/// Clears an extension.
/// </summary>
public ExtendableBuilder<TMessage, TBuilder> ClearExtension<TExtension>(GeneratedExtensionBase<TExtension> extension) {
ExtendableMessage<TMessage, TBuilder> message = MessageBeingBuilt;
message.VerifyExtensionContainingType(extension);
message.Extensions.ClearField(extension.Descriptor);
return this;
}
/// <summary>
/// Called by subclasses to parse an unknown field or an extension.
/// </summary>
/// <returns>true unless the tag is an end-group tag</returns>
protected override bool ParseUnknownField(CodedInputStream input, UnknownFieldSet.Builder unknownFields,
ExtensionRegistry extensionRegistry, uint tag) {
return FieldSet.MergeFieldFrom(input, unknownFields, extensionRegistry, this, tag);
}
// ---------------------------------------------------------------
// Reflection
public override object this[FieldDescriptor field, int index] {
set {
if (field.IsExtension) {
ExtendableMessage<TMessage, TBuilder> message = MessageBeingBuilt;
message.VerifyContainingType(field);
message.Extensions[field, index] = value;
} else {
base[field, index] = value;
}
}
}
public override object this[FieldDescriptor field] {
set {
if (field.IsExtension) {
ExtendableMessage<TMessage, TBuilder> message = MessageBeingBuilt;
message.VerifyContainingType(field);
message.Extensions[field] = value;
} else {
base[field] = value;
}
}
}
public override TBuilder ClearField(FieldDescriptor field) {
if (field.IsExtension) {
ExtendableMessage<TMessage, TBuilder> message = MessageBeingBuilt;
message.VerifyContainingType(field);
message.Extensions.ClearField(field);
return ThisBuilder;
} else {
return base.ClearField(field);
}
}
public override TBuilder AddRepeatedField(FieldDescriptor field, object value) {
if (field.IsExtension) {
ExtendableMessage<TMessage, TBuilder> message = MessageBeingBuilt;
message.VerifyContainingType(field);
message.Extensions.AddRepeatedField(field, value);
return ThisBuilder;
} else {
return base.AddRepeatedField(field, value);
}
}
}
}
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