public static unsafe BlittableJsonReaderObject ReadForMemory(this JsonOperationContext.SyncJsonOperationContext syncContext, string jsonString, string documentId)
{
// todo: maybe use ManagedPinnedBuffer here
var maxByteSize = Encodings.Utf8.GetMaxByteCount(jsonString.Length);
fixed(char *val = jsonString)
{
var buffer = ArrayPool <byte> .Shared.Rent(maxByteSize);
try
{
fixed(byte *buf = buffer)
{
Encodings.Utf8.GetBytes(val, jsonString.Length, buf, maxByteSize);
using (var ms = new MemoryStream(buffer))
{
return(ReadForMemory(syncContext, ms, documentId));
}
}
}
finally
{
ArrayPool <byte> .Shared.Return(buffer);
}
}
}
internal static void Write(this JsonOperationContext.SyncJsonOperationContext syncContext, Stream stream, BlittableJsonReaderObject json)
{
syncContext.EnsureNotDisposed();
using (var writer = new BlittableJsonTextWriter(syncContext.Context, stream))
{
writer.WriteObject(json);
}
}
public static BlittableJsonReaderObject ParseToMemory(
this JsonOperationContext.SyncJsonOperationContext syncContext,
Stream stream,
string debugTag,
BlittableJsonDocumentBuilder.UsageMode mode,
JsonOperationContext.MemoryBuffer bytes,
IBlittableDocumentModifier modifier = null)
{
syncContext.EnsureNotDisposed();
syncContext.JsonParserState.Reset();
using (var parser = new UnmanagedJsonParser(syncContext.Context, syncContext.JsonParserState, debugTag))
using (var builder = new BlittableJsonDocumentBuilder(syncContext.Context, mode, debugTag, parser, syncContext.JsonParserState, modifier: modifier))
{
syncContext.Context.CachedProperties.NewDocument();
builder.ReadObjectDocument();
while (true)
{
if (bytes.Valid == bytes.Used)
{
var read = stream.Read(bytes.Memory.Memory.Span);
syncContext.EnsureNotDisposed();
if (read == 0)
{
throw new EndOfStreamException("Stream ended without reaching end of json content");
}
bytes.Valid = read;
bytes.Used = 0;
}
parser.SetBuffer(bytes);
var result = builder.Read();
bytes.Used += parser.BufferOffset;
if (result)
{
break;
}
}
builder.FinalizeDocument();
var reader = builder.CreateReader();
return(reader);
}
}
private static BlittableJsonReaderObject ParseToMemory(JsonOperationContext.SyncJsonOperationContext syncContext, Stream stream, string debugTag, BlittableJsonDocumentBuilder.UsageMode mode, IBlittableDocumentModifier modifier = null)
{
using (syncContext.Context.GetMemoryBuffer(out var bytes))
return(ParseToMemory(syncContext, stream, debugTag, mode, bytes, modifier));
}
public static BlittableJsonReaderObject ReadForMemory(this JsonOperationContext.SyncJsonOperationContext syncContext, Stream stream, string documentId)
{
return(ParseToMemory(syncContext, stream, documentId, BlittableJsonDocumentBuilder.UsageMode.None));
}