internal static ImmutableArray <byte> CreateBlob(ArraySegment <byte> bytes)
{
RoslynDebug.Assert(bytes.Array != null);
if (bytes.Count < CompressionThreshold)
{
using (var builder = Cci.PooledBlobBuilder.GetInstance())
{
builder.WriteInt32(0);
builder.WriteBytes(bytes.Array, bytes.Offset, bytes.Count);
return(builder.ToImmutableArray());
}
}
else
{
using (var builder = BlobBuildingStream.GetInstance())
{
builder.WriteInt32(bytes.Count);
using (
var deflater = new CountingDeflateStream(
builder,
CompressionLevel.Optimal,
leaveOpen: true
)
)
{
deflater.Write(bytes.Array, bytes.Offset, bytes.Count);
}
return(builder.ToImmutableArray());
}
}
}
/// <summary>
/// Creates the blob to be saved to the PDB.
/// </summary>
internal static ImmutableArray <byte> CreateBlob(Stream stream)
{
RoslynDebug.Assert(stream != null);
RoslynDebug.Assert(stream.CanRead);
RoslynDebug.Assert(stream.CanSeek);
long longLength = stream.Length;
Debug.Assert(longLength >= 0);
if (longLength > int.MaxValue)
{
throw new IOException(CodeAnalysisResources.StreamIsTooLong);
}
stream.Seek(0, SeekOrigin.Begin);
int length = (int)longLength;
if (length < CompressionThreshold)
{
using (var builder = Cci.PooledBlobBuilder.GetInstance())
{
builder.WriteInt32(0);
int bytesWritten = builder.TryWriteBytes(stream, length);
if (length != bytesWritten)
{
throw new EndOfStreamException();
}
return(builder.ToImmutableArray());
}
}
else
{
using (var builder = BlobBuildingStream.GetInstance())
{
builder.WriteInt32(length);
using (
var deflater = new CountingDeflateStream(
builder,
CompressionLevel.Optimal,
leaveOpen: true
)
)
{
stream.CopyTo(deflater);
if (length != deflater.BytesWritten)
{
throw new EndOfStreamException();
}
}
return(builder.ToImmutableArray());
}
}
}
private static ImmutableArray <byte> CreateBlob(SourceText text)
{
RoslynDebug.Assert(text != null);
RoslynDebug.Assert(text.CanBeEmbedded);
RoslynDebug.Assert(text.Encoding != null);
RoslynDebug.Assert(text.PrecomputedEmbeddedTextBlob.IsDefault);
int maxByteCount;
try
{
maxByteCount = text.Encoding.GetMaxByteCount(text.Length);
}
catch (ArgumentOutOfRangeException)
{
// Encoding does not provide a way to predict that max byte count would not
// fit in Int32 and we must therefore catch ArgumentOutOfRange to handle that
// case.
maxByteCount = int.MaxValue;
}
using (var builder = BlobBuildingStream.GetInstance())
{
if (maxByteCount < CompressionThreshold)
{
builder.WriteInt32(0);
using (var writer = new StreamWriter(builder, text.Encoding, bufferSize: Math.Max(1, text.Length), leaveOpen: true))
{
text.Write(writer);
}
}
else
{
Blob reserved = builder.ReserveBytes(4);
using (var deflater = new CountingDeflateStream(builder, CompressionLevel.Optimal, leaveOpen: true))
{
using (var writer = new StreamWriter(deflater, text.Encoding, bufferSize: 1024, leaveOpen: true))
{
text.Write(writer);
}
new BlobWriter(reserved).WriteInt32(deflater.BytesWritten);
}
}
return(builder.ToImmutableArray());
}
}
internal static ImmutableArray <byte> CreateBlob(ArraySegment <byte> bytes)
{
if (bytes.Count < 200)
{
BlobBuilder pooledBlobBuilder = new BlobBuilder();
pooledBlobBuilder.WriteInt32(0);
pooledBlobBuilder.WriteBytes(bytes.Array, bytes.Offset, bytes.Count);
return(pooledBlobBuilder.ToImmutableArray());
}
using (BlobBuildingStream builder = BlobBuildingStream.GetInstance())
{
builder.WriteInt32(bytes.Count);
using (CountingDeflateStream deflater = new CountingDeflateStream(builder, CompressionLevel.Optimal, leaveOpen: true))
{
deflater.Write(bytes.Array, bytes.Offset, bytes.Count);
}
return(builder.ToImmutableArray());
}
}
/// <summary>
/// Creates the blob to be saved to the PDB.
/// </summary>
internal static ImmutableArray <byte> CreateBlob(Stream stream)
{
long length2 = stream.Length;
if (length2 > int.MaxValue)
{
throw new IOException("Stream is too long");
}
stream.Seek(0L, SeekOrigin.Begin);
int length = (int)length2;
if (length < 200)
{
BlobBuilder pooledBlobBuilder = new BlobBuilder();
pooledBlobBuilder.WriteInt32(0);
int bytesWritten = pooledBlobBuilder.TryWriteBytes(stream, length);
if (length != bytesWritten)
{
throw new EndOfStreamException();
}
return(pooledBlobBuilder.ToImmutableArray());
}
using (BlobBuildingStream builder = BlobBuildingStream.GetInstance())
{
builder.WriteInt32(length);
using (CountingDeflateStream deflater = new CountingDeflateStream(builder, CompressionLevel.Optimal, leaveOpen: true))
{
stream.CopyTo(deflater);
if (length != deflater.BytesWritten)
{
throw new EndOfStreamException();
}
}
return(builder.ToImmutableArray());
}
}