Function UnpackOffset

library/cpp/containers/comptrie/comptrie_impl.h:106–113

Unpack the offset to the next node. The encoding scheme can store offsets up to 7 bytes; whether they fit into size_t is another issue.

    // Unpack the offset to the next node. The encoding scheme can store offsets
    // up to 7 bytes; whether they fit into size_t is another issue.
    Y_FORCE_INLINE size_t UnpackOffset(const char* p, size_t len) {
        size_t result = 0;

        while (len--)
            result = ((result << 8) | (*(p++) & 0xFF));

        return result;
    }

    // Auxiliary function: consumes one character from the input. Advances the data pointer
    // to the position immediately preceding the value for the link just traversed (if any);