internal BsonBinaryWriterContext(
BsonBinaryWriterContext parentContext,
BsonWriteState writeState
)
{
this.parentContext = parentContext;
this.writeState = writeState;
}
public BsonBinaryWriter(
Stream stream,
BsonBuffer buffer,
BsonBinaryWriterSettings settings
) {
this.stream = stream;
this.buffer = buffer ?? new BsonBuffer();
this.disposeBuffer = buffer == null; // only call Dispose if we allocated the buffer
this.settings = settings;
context = new BsonBinaryWriterContext(null, BsonWriteState.Initial);
}
public override void Close() {
// Close can be called on Disposed objects
if (context.WriteState != BsonWriteState.Closed) {
if (context.WriteState == BsonWriteState.Done) {
Flush();
}
if (stream != null && settings.CloseOutput) {
stream.Close();
}
context = new BsonBinaryWriterContext(null, BsonWriteState.Closed);
}
}
public override void WriteArrayName(
string name
) {
if (disposed) { throw new ObjectDisposedException("BsonBinaryWriter"); }
if ((context.WriteState & BsonWriteState.Document) == 0) {
throw new InvalidOperationException("WriteStartArray can only be called when WriteState is one of the document states");
}
buffer.WriteByte((byte) BsonType.Array);
buffer.WriteCString(name);
context = new BsonBinaryWriterContext(context, BsonWriteState.Array);
context = new BsonBinaryWriterContext(context, BsonWriteState.StartDocument);
}
public override void WriteStartDocument() {
if (disposed) { throw new ObjectDisposedException("BsonBinaryWriter"); }
if (context.WriteState == BsonWriteState.StartDocument) {
context = context.ParentContext;
} else if (context.WriteState == BsonWriteState.Initial || context.WriteState == BsonWriteState.Done) {
context = new BsonBinaryWriterContext(context, BsonWriteState.Document);
} else {
throw new InvalidOperationException("WriteStartDocument can only be called when WriteState is Initial, StartDocument, or Done");
}
context.StartPosition = buffer.Position;
buffer.WriteInt32(0); // reserve space for size
}
public override void WriteJavaScriptWithScope(
string name,
string code
) {
if (disposed) { throw new ObjectDisposedException("BsonBinaryWriter"); }
if ((context.WriteState & BsonWriteState.Document) == 0) {
throw new InvalidOperationException("WriteStartJavaScriptWithScope can only be called when WriteState is one of the document states");
}
buffer.WriteByte((byte) BsonType.JavaScriptWithScope);
buffer.WriteCString(name);
context = new BsonBinaryWriterContext(context, BsonWriteState.JavaScriptWithScope);
context.StartPosition = buffer.Position;
buffer.WriteInt32(0); // reserve space for size of JavaScript with scope value
buffer.WriteString(code);
context = new BsonBinaryWriterContext(context, BsonWriteState.ScopeDocument);
context = new BsonBinaryWriterContext(context, BsonWriteState.StartDocument);
}
public override void WriteEndDocument() {
if (disposed) { throw new ObjectDisposedException("BsonBinaryWriter"); }
if ((context.WriteState & BsonWriteState.Document) == 0) {
throw new InvalidOperationException("WriteEndDocument can only be called when WriteState is one of the document states");
}
buffer.WriteByte(0);
BackpatchSize(); // size of document
context = context.ParentContext;
if (context.WriteState == BsonWriteState.JavaScriptWithScope) {
BackpatchSize(); // size of the JavaScript with scope value
context = context.ParentContext;
}
if (context.WriteState == BsonWriteState.Initial) {
context = new BsonBinaryWriterContext(null, BsonWriteState.Done);
}
}
