-namespace {
-struct StringComparator {
- /// Compare two strings and return true if LHS is lexicographically less than
- /// RHS. Requires that RHS doesn't contain any zero bytes.
- bool operator()(const char *LHS, StringRef RHS) const {
- // Compare prefixes with strncmp. If prefixes match we know that LHS is
- // greater or equal to RHS as RHS can't contain any '\0'.
- return std::strncmp(LHS, RHS.data(), RHS.size()) < 0;
- }
-
- // Provided for compatibility with MSVC's debug mode.
- bool operator()(StringRef LHS, const char *RHS) const { return LHS < RHS; }
- bool operator()(StringRef LHS, StringRef RHS) const { return LHS < RHS; }
- bool operator()(const char *LHS, const char *RHS) const {
- return std::strcmp(LHS, RHS) < 0;
- }
-};
-}
-