read_hex4()

long fl::anonymous_namespace{json.cpp.hpp}::read_hex4	(	const fl::span< const char > &	span,
		size_t	pos )

Definition at line 642 of file json.cpp.hpp.

                                                                        {
    if (pos + 4 > span.size()) return -1;
    long value = 0;
    for (size_t k = 0; k < 4; ++k) {
        char h = span[pos + k];
        int digit;
        if (h >= '0' && h <= '9') digit = h - '0';
        else if (h >= 'a' && h <= 'f') digit = h - 'a' + 10;
        else if (h >= 'A' && h <= 'F') digit = h - 'A' + 10;
        else return -1;
        value = (value << 4) | digit;
    }
    return value;
}

References fl::FL_NO_EXCEPT, pos, read_hex4(), fl::span< T, Extent >::size(), and fl::type_rank< T >::value.

Referenced by read_hex4(), and unescape_string().

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