ada::checkers Namespace Reference

Includes the definitions for validation functions. More...

Functions
bool	has_hex_prefix_unsafe (std::string_view input)
bool	has_hex_prefix (std::string_view input)
constexpr bool	is_digit (char x) noexcept
constexpr char	to_lower (char x) noexcept
constexpr bool	is_alpha (char x) noexcept
constexpr bool	is_windows_drive_letter (std::string_view input) noexcept
constexpr bool	is_normalized_windows_drive_letter (std::string_view input) noexcept
ada_really_inline bool	begins_with (std::string_view view, std::string_view prefix)

Variables
static constexpr std::array< uint8_t, 256 >	path_signature_table

Detailed Description

Includes the definitions for validation functions.

These functions are not part of our public API and may change at any time.

Function Documentation

begins_with()

ada_really_inline bool ada::checkers::begins_with	(	std::string_view	view,
		std::string_view	prefix )

Warning

Will be removed when Ada requires C++20.

Definition at line 57 of file checkers-inl.h.

References ada::parse().

Referenced by ada::url::get_components(), ada::url::get_href(), ada::parser::parse_url(), and ada::url_aggregator::set_pathname().

has_hex_prefix()

bool ada::checkers::has_hex_prefix ( std::string_view input )

inline

Check whether a string starts with 0x or 0X.

Definition at line 33 of file checkers-inl.h.

References has_hex_prefix_unsafe(), and ada::parse().

has_hex_prefix_unsafe()

bool ada::checkers::has_hex_prefix_unsafe ( std::string_view input )

inline

Check whether a string starts with 0x or 0X. The function is only safe if input.size() >=2.

See also

has_hex_prefix

Definition at line 16 of file checkers-inl.h.

References ada::parse().

Referenced by has_hex_prefix().

is_alpha()

constexpr bool ada::checkers::is_alpha ( char x )

constexprnoexcept

Returns true if the character is an ASCII letter. Equivalent to std::isalpha but more likely to be inlined by the compiler.

Attention

std::isalpha is not constexpr generally.

Definition at line 41 of file checkers-inl.h.

References ada::parse(), and to_lower().

Referenced by is_normalized_windows_drive_letter(), is_windows_drive_letter(), ada::parser::parse_url(), ada::url::set_protocol(), and ada::url_aggregator::set_protocol().

is_digit()

constexpr bool ada::checkers::is_digit ( char x )

constexprnoexcept

Check whether x is an ASCII digit. More likely to be inlined than std::isdigit.

Definition at line 37 of file checkers-inl.h.

References ada::parse().

is_normalized_windows_drive_letter()

constexpr bool ada::checkers::is_normalized_windows_drive_letter ( std::string_view input )

inlineconstexprnoexcept

A normalized Windows drive letter is a Windows drive letter of which the second code point is U+003A (:).

Definition at line 52 of file checkers-inl.h.

References is_alpha(), and ada::parse().

Referenced by ada::parser::parse_url().

is_windows_drive_letter()

constexpr bool ada::checkers::is_windows_drive_letter ( std::string_view input )

inlineconstexprnoexcept

A string starts with a Windows drive letter if all of the following are true:

• its length is greater than or equal to 2
• its first two code points are a Windows drive letter
• its length is 2 or its third code point is U+002F (/), U+005C (), U+003F (?), or U+0023 (#).

https://url.spec.whatwg.org/#start-with-a-windows-drive-letter

Definition at line 45 of file checkers-inl.h.

References is_alpha(), and ada::parse().

Referenced by ada::parser::parse_url().

to_lower()

constexpr char ada::checkers::to_lower ( char x )

constexprnoexcept

Assuming that x is an ASCII letter, this function returns the lower case equivalent.

More likely to be inlined by the compiler and constexpr.

Definition at line 39 of file checkers-inl.h.

References ada::parse().

Referenced by is_alpha().

Variable Documentation

path_signature_table

constexpr std::array<uint8_t, 256> ada::checkers::path_signature_table

staticconstexpr

Initial value:

=
    []() constexpr {
      std::array<uint8_t, 256> result{};
      for (size_t i = 0; i < 256; i++) {
        if (i <= 0x20 || i == 0x22 || i == 0x23 || i == 0x3c || i == 0x3e ||
            i == 0x3f || i == 0x60 || i == 0x7b || i == 0x7b || i == 0x7d ||
            i > 0x7e) {
          result[i] = 1;
        } else if (i == 0x25) {
          result[i] = 8;
        } else if (i == 0x2e) {
          result[i] = 4;
        } else if (i == 0x5c) {
          result[i] = 2;
        } else {
          result[i] = 0;
        }
      }
      return result;
    }()

Definition at line 60 of file checkers.cpp.