/// <summary>
/// Try Get Encoded System String Value
/// </summary>
/// <param name="stringToken">The buffer to read from..</param>
/// <param name="value">The encoded system string.</param>
/// <returns>Encoded System String Value</returns>
private static bool TryGetEncodedSystemStringValue(
Utf8Span stringToken,
out UtfAllString value)
{
if (stringToken.IsEmpty)
{
value = default;
return(false);
}
if (!JsonBinaryEncoding.TypeMarker.IsOneByteEncodedSystemString(stringToken.Span[0]))
{
value = default;
return(false);
}
if (stringToken.Length < 1)
{
value = default;
return(false);
}
int systemStringId = stringToken.Span[0] - JsonBinaryEncoding.TypeMarker.SystemString1ByteLengthMin;
return(JsonBinaryEncoding.TryGetSystemStringById(systemStringId, out value));
}
public static bool TryGetSystemStringById(int id, out UtfAllString systemString)
{
if (id >= SystemStrings.UtfAllStringValues.Length)
{
systemString = default;
return(false);
}
systemString = SystemStrings.UtfAllStringValues[id];
return(true);
}
public bool TryGetStringAtIndex(int index, out UtfAllString value)
{
if ((index < 0) || (index >= this.size))
{
value = default;
return(false);
}
value = this.strings[index];
return(true);
}
/// <summary>
/// Try Get Encoded String Value
/// </summary>
/// <param name="stringToken">The string token to read from.</param>
/// <param name="jsonStringDictionary">The JSON string dictionary.</param>
/// <param name="value">The encoded string if found.</param>
/// <returns>Encoded String Value</returns>
private static bool TryGetEncodedStringValue(
Utf8Span stringToken,
IReadOnlyJsonStringDictionary jsonStringDictionary,
out UtfAllString value)
{
if (JsonBinaryEncoding.TryGetEncodedSystemStringValue(stringToken, out value))
{
return(true);
}
if (JsonBinaryEncoding.TryGetEncodedUserStringValue(stringToken, jsonStringDictionary, out value))
{
return(true);
}
value = default;
return(false);
}
/// <summary>
/// Try Get Encoded User String Value
/// </summary>
/// <param name="stringToken">The string token to read from.</param>
/// <param name="jsonStringDictionary">The JSON string dictionary.</param>
/// <param name="encodedUserStringValue">The encoded user string value if found.</param>
/// <returns>Whether or not the Encoded User String Value was found</returns>
private static bool TryGetEncodedUserStringValue(
Utf8Span stringToken,
IReadOnlyJsonStringDictionary jsonStringDictionary,
out UtfAllString encodedUserStringValue)
{
if (jsonStringDictionary == null)
{
encodedUserStringValue = default;
return(false);
}
if (!JsonBinaryEncoding.TryGetUserStringId(stringToken, out int userStringId))
{
encodedUserStringValue = default;
return(false);
}
return(jsonStringDictionary.TryGetStringAtIndex(userStringId, out encodedUserStringValue));
}
public bool TryAddString(Utf8Span value, out int index)
{
// If the string already exists, then just return that index.
if (this.utf8StringToIndex.TryGetValue(value.Span, out index))
{
return(true);
}
// If we are at capacity just return false.
if (this.size == this.strings.Length)
{
index = default;
return(false);
}
index = this.size;
this.strings[this.size] = UtfAllString.Create(value.ToString());
this.utf8StringToIndex.AddOrUpdate(value.Span, index);
this.size++;
return(true);
}
