GetCharsWithFallback() [3/3]

override int System.Text.UTF8Encoding.GetCharsWithFallback ( ReadOnlySpan< byte > bytes, int originalBytesLength, Span< char > chars, int originalCharsLength, DecoderNLS decoder )

inlinesealedprotectedvirtualinherited

Reimplemented from System.Text.Encoding.

Definition at line 438 of file UTF8Encoding.cs.

    {
        if (((decoder == null) ? base.DecoderFallback : decoder.Fallback) is DecoderReplacementFallback { MaxCharCount: 1 } decoderReplacementFallback && decoderReplacementFallback.DefaultString[0] == '\ufffd')
        {
            Utf8.ToUtf16(bytes, chars, out var bytesRead, out var charsWritten, replaceInvalidSequences: true, decoder?.MustFlush ?? true);
            bytes = bytes.Slice(bytesRead);
            chars = chars.Slice(charsWritten);
        }
        if (bytes.IsEmpty)
        {
            return originalCharsLength - chars.Length;
        }
        return base.GetCharsWithFallback(bytes, originalBytesLength, chars, originalCharsLength, decoder);
    }

References System.bytes, System.chars, System.Text.DecoderReplacementFallback.DefaultString, System.Text.DecoderNLS.Fallback, System.Text.DecoderNLS.MustFlush, and System.Text.Unicode.Utf8.ToUtf16().

Referenced by System.Text.UTF8Encoding.GetCharsCommon().