TryReadUnsignedInteger()

static bool System.Formats.Asn1.AsnDecoder.TryReadUnsignedInteger ( ReadOnlySpan< byte > source, AsnEncodingRules ruleSet, int sizeLimit, Asn1Tag expectedTag, UniversalTagNumber tagNumber, out ulong value, out int bytesConsumed )

inlinestaticprivate

Definition at line 1038 of file AsnDecoder.cs.

    {
        int bytesConsumed2;
        ReadOnlySpan<byte> readOnlySpan = GetIntegerContents(source, ruleSet, expectedTag, tagNumber, out bytesConsumed2);
        if ((readOnlySpan[0] & 0x80u) != 0)
        {
            bytesConsumed = 0;
            value = 0uL;
            return false;
        }
        if (readOnlySpan.Length > 1 && readOnlySpan[0] == 0)
        {
            readOnlySpan = readOnlySpan.Slice(1);
        }
        if (readOnlySpan.Length > sizeLimit)
        {
            bytesConsumed = 0;
            value = 0uL;
            return false;
        }
        ulong num = 0uL;
        for (int i = 0; i < readOnlySpan.Length; i++)
        {
            num <<= 8;
            num |= readOnlySpan[i];
        }
        bytesConsumed = bytesConsumed2;
        value = num;
        return true;
    }

References System.Formats.Asn1.AsnDecoder.GetIntegerContents(), System.source, and System.value.

Referenced by System.Formats.Asn1.AsnDecoder.ReadEnumeratedValue(), System.Formats.Asn1.AsnDecoder.TryReadUInt32(), and System.Formats.Asn1.AsnDecoder.TryReadUInt64().