private static void VerifyWriter <T>(JsonSerializationFormat jsonSerializationFormat, T expectedDeserializedValue)
{
using (CosmosDBToNewtonsoftWriter writer = new CosmosDBToNewtonsoftWriter(jsonSerializationFormat))
{
Newtonsoft.Json.JsonSerializer serializer = new Newtonsoft.Json.JsonSerializer();
serializer.Serialize(writer, expectedDeserializedValue);
ReadOnlyMemory <byte> result = writer.GetResult();
string actualSerializedValue;
if (jsonSerializationFormat == JsonSerializationFormat.Binary)
{
actualSerializedValue = JsonTestUtils.ConvertBinaryToText(result);
}
else
{
actualSerializedValue = Utf8Span.UnsafeFromUtf8BytesNoValidation(result.Span).ToString();
}
actualSerializedValue = NewtonsoftInteropTests.NewtonsoftFormat(actualSerializedValue);
string expectedSerializedValue = NewtonsoftInteropTests.NewtonsoftFormat(
JsonConvert.SerializeObject(
expectedDeserializedValue));
Assert.AreEqual(expectedSerializedValue, actualSerializedValue);
}
}
public bool TryAddString(string value, out int index)
{
int utf8Length = Encoding.UTF8.GetByteCount(value);
Span <byte> utfString = utf8Length < JsonStringDictionary.MaxStackAllocSize ? stackalloc byte[utf8Length] : new byte[utf8Length];
Encoding.UTF8.GetBytes(value, utfString);
return(this.TryAddString(Utf8Span.UnsafeFromUtf8BytesNoValidation(utfString), out index));
}
/// <inheritdoc />
public override void WriteStringValue(string value)
{
int utf8Length = Encoding.UTF8.GetByteCount(value);
Span <byte> utf8Buffer = utf8Length < JsonBinaryWriter.MaxStackAllocSize ? stackalloc byte[utf8Length] : new byte[utf8Length];
Encoding.UTF8.GetBytes(value, utf8Buffer);
Utf8Span utf8StringValue = Utf8Span.UnsafeFromUtf8BytesNoValidation(utf8Buffer);
this.WriteFieldNameOrString(isFieldName: false, utf8StringValue);
}
/// <inheritdoc />
public override void WriteStringValue(string value)
{
int utf8Length = Encoding.UTF8.GetByteCount(value);
Span <byte> utf8Buffer = utf8Length < JsonTextWriter.MaxStackAlloc ? stackalloc byte[utf8Length] : new byte[utf8Length];
Encoding.UTF8.GetBytes(value, utf8Buffer);
Utf8Span utf8Value = Utf8Span.UnsafeFromUtf8BytesNoValidation(utf8Buffer);
this.WriteStringValue(utf8Value);
}
/// <inheritdoc />
public virtual void WriteFieldName(string fieldName)
{
int utf8Length = Encoding.UTF8.GetByteCount(fieldName);
Span <byte> utf8Buffer = utf8Length < JsonTextWriter.MaxStackAlloc ? stackalloc byte[utf8Length] : new byte[utf8Length];
Encoding.UTF8.GetBytes(fieldName, utf8Buffer);
Utf8Span utf8FieldName = Utf8Span.UnsafeFromUtf8BytesNoValidation(utf8Buffer);
this.WriteFieldName(utf8FieldName);
}
private void WriteEscapedString(Utf8Span unescapedString)
{
while (!unescapedString.IsEmpty)
{
int?indexOfFirstCharacterThatNeedsEscaping = JsonTextWriter.IndexOfCharacterThatNeedsEscaping(unescapedString);
if (!indexOfFirstCharacterThatNeedsEscaping.HasValue)
{
// No escaping needed;
indexOfFirstCharacterThatNeedsEscaping = unescapedString.Length;
}
// Write as much of the string as possible
this.jsonTextMemoryWriter.Write(
unescapedString.Span.Slice(
start: 0,
length: indexOfFirstCharacterThatNeedsEscaping.Value));
unescapedString = Utf8Span.UnsafeFromUtf8BytesNoValidation(unescapedString.Span.Slice(start: indexOfFirstCharacterThatNeedsEscaping.Value));
// Escape the next character if it exists
if (!unescapedString.IsEmpty)
{
byte character = unescapedString.Span[0];
unescapedString = Utf8Span.UnsafeFromUtf8BytesNoValidation(unescapedString.Span.Slice(start: 1));
switch (character)
{
case (byte)'\\':
this.jsonTextMemoryWriter.Write((byte)'\\');
this.jsonTextMemoryWriter.Write((byte)'\\');
break;
case (byte)'"':
this.jsonTextMemoryWriter.Write((byte)'\\');
this.jsonTextMemoryWriter.Write((byte)'"');
break;
case (byte)'/':
this.jsonTextMemoryWriter.Write((byte)'\\');
this.jsonTextMemoryWriter.Write((byte)'/');
break;
case (byte)'\b':
this.jsonTextMemoryWriter.Write((byte)'\\');
this.jsonTextMemoryWriter.Write((byte)'b');
break;
case (byte)'\f':
this.jsonTextMemoryWriter.Write((byte)'\\');
this.jsonTextMemoryWriter.Write((byte)'f');
break;
case (byte)'\n':
this.jsonTextMemoryWriter.Write((byte)'\\');
this.jsonTextMemoryWriter.Write((byte)'n');
break;
case (byte)'\r':
this.jsonTextMemoryWriter.Write((byte)'\\');
this.jsonTextMemoryWriter.Write((byte)'r');
break;
case (byte)'\t':
this.jsonTextMemoryWriter.Write((byte)'\\');
this.jsonTextMemoryWriter.Write((byte)'t');
break;
default:
char wideCharToEscape = (char)character;
// We got a control character (U+0000 through U+001F).
this.jsonTextMemoryWriter.Write((byte)'\\');
this.jsonTextMemoryWriter.Write((byte)'u');
this.jsonTextMemoryWriter.Write(GetHexDigit((wideCharToEscape >> 12) & 0xF));
this.jsonTextMemoryWriter.Write(GetHexDigit((wideCharToEscape >> 8) & 0xF));
this.jsonTextMemoryWriter.Write(GetHexDigit((wideCharToEscape >> 4) & 0xF));
this.jsonTextMemoryWriter.Write(GetHexDigit((wideCharToEscape >> 0) & 0xF));
break;
}
}
}
}
