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using System.IO;
namespace Google.Protobuf
{
/// <summary>
/// Extension methods on <see cref="IMessage"/> and <see cref="IMessage{T}"/>.
/// </summary>
public static class MessageExtensions
{
public static void MergeFrom(this IMessage message, byte[] data)
{
ThrowHelper.ThrowIfNull(message, "message");
ThrowHelper.ThrowIfNull(data, "data");
CodedInputStream input = CodedInputStream.CreateInstance(data);
message.MergeFrom(input);
input.CheckLastTagWas(0);
}
public static void MergeFrom(this IMessage message, ByteString data)
{
ThrowHelper.ThrowIfNull(message, "message");
ThrowHelper.ThrowIfNull(data, "data");
CodedInputStream input = data.CreateCodedInput();
message.MergeFrom(input);
input.CheckLastTagWas(0);
}
public static void MergeFrom(this IMessage message, Stream input)
{
ThrowHelper.ThrowIfNull(message, "message");
ThrowHelper.ThrowIfNull(input, "input");
CodedInputStream codedInput = CodedInputStream.CreateInstance(input);
message.MergeFrom(codedInput);
codedInput.CheckLastTagWas(0);
}
public static void MergeDelimitedFrom(this IMessage message, Stream input)
{
ThrowHelper.ThrowIfNull(message, "message");
ThrowHelper.ThrowIfNull(input, "input");
int size = (int)CodedInputStream.ReadRawVarint32(input);
Stream limitedStream = new LimitedInputStream(input, size);
message.MergeFrom(limitedStream);
}
public static byte[] ToByteArray(this IMessage message)
{
ThrowHelper.ThrowIfNull(message, "message");
byte[] result = new byte[message.CalculateSize()];
CodedOutputStream output = CodedOutputStream.CreateInstance(result);
message.WriteTo(output);
output.CheckNoSpaceLeft();
return result;
}
public static void WriteTo(this IMessage message, Stream output)
{
ThrowHelper.ThrowIfNull(message, "message");
ThrowHelper.ThrowIfNull(output, "output");
CodedOutputStream codedOutput = CodedOutputStream.CreateInstance(output);
message.WriteTo(codedOutput);
codedOutput.Flush();
}
public static void WriteDelimitedTo(this IMessage message, Stream output)
{
ThrowHelper.ThrowIfNull(message, "message");
ThrowHelper.ThrowIfNull(output, "output");
CodedOutputStream codedOutput = CodedOutputStream.CreateInstance(output);
codedOutput.WriteRawVarint32((uint)message.CalculateSize());
message.WriteTo(codedOutput);
codedOutput.Flush();
}
public static ByteString ToByteString(this IMessage message)
{
ThrowHelper.ThrowIfNull(message, "message");
return ByteString.AttachBytes(message.ToByteArray());
}
}
}
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