checkers.h

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#ifndef ADA_CHECKERS_H
#define ADA_CHECKERS_H
 
#include "ada/common_defs.h"
 
#include <cstring>
#include <string_view>

namespace ada::checkers {

constexpr char to_lower(char x) noexcept;

constexpr bool is_alpha(char x) noexcept;

constexpr bool has_hex_prefix_unsafe(std::string_view input);
constexpr bool has_hex_prefix(std::string_view input);

constexpr bool is_digit(char x) noexcept;

inline constexpr bool is_windows_drive_letter(std::string_view input) noexcept;

inline constexpr bool is_normalized_windows_drive_letter(
    std::string_view input) noexcept;

ada_really_inline constexpr bool is_ipv4(std::string_view view) noexcept;

ada_really_inline constexpr uint8_t path_signature(
    std::string_view input) noexcept;

ada_really_inline constexpr bool verify_dns_length(
    std::string_view input) noexcept;

ada_really_inline constexpr uint64_t try_parse_ipv4_fast(
    std::string_view input) noexcept;

constexpr uint64_t ipv4_fast_fail = uint64_t(1) << 32;
 
}  // namespace ada::checkers
 
#endif  // ADA_CHECKERS_H