Function FastHasPrefix

library/cpp/expression/expression.cpp:15–27

static inline bool FastHasPrefix(const TStringBuf& suffix, const TStringBuf& prefix) {
    if (suffix.size() < prefix.size()) {
        return false;
    }

    switch (prefix.size()) {
        case 1:
            return suffix[0] == prefix[0];
        case 2:
            return ReadUnaligned<ui16>(suffix.data()) == ReadUnaligned<ui16>(prefix.data());
    }
    return suffix.StartsWith(prefix);
}

enum TExpressionOperation {
    EO_BEGIN,