From Jason Turner

[depr.conversions]

C++20 → C++23 2.8 KB 43 lines
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Archived: C++20 | C++23
Markdown: C++20 | C++23
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@@ -1,7 +1,9 @@
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  ## Deprecated convenience conversion interfaces <a id="depr.conversions">[[depr.conversions]]</a>
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  The header `<locale>` has the following additions:
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  ``` cpp
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  namespace std {
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  template<class Codecvt, class Elem = wchar_t,
@@ -100,17 +102,10 @@ An object of this class template stores:
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  - `cvtptr` — a pointer to the allocated conversion object (which is
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  freed when the `wstring_convert` object is destroyed)
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  - `cvtstate` — a conversion state object
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  - `cvtcount` — a conversion count
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- ``` cpp
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- using byte_string = basic_string<char, char_traits<char>, ByteAlloc>;
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- ```
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-
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- The type shall be a synonym for
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- `basic_string<char, char_traits<char>, ByteAlloc>`.
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-
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  ``` cpp
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  size_t converted() const noexcept;
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  ```
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  *Returns:* `cvtcount`.
@@ -141,27 +136,15 @@ In all cases:
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  return the converted wide string. Otherwise, if the object was
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  constructed with a wide-error string, the member function shall return
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  the wide-error string. Otherwise, the member function throws an object
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  of class `range_error`.
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- ``` cpp
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- using int_type = typename wide_string::traits_type::int_type;
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- ```
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-
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- The type shall be a synonym for `wide_string::traits_type::int_type`.
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-
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  ``` cpp
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  state_type state() const;
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  ```
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- returns `cvtstate`.
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-
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- ``` cpp
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- using state_type = typename Codecvt::state_type;
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- ```
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-
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- The type shall be a synonym for `Codecvt::state_type`.
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  ``` cpp
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  byte_string to_bytes(Elem wchar);
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  byte_string to_bytes(const Elem* wptr);
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  byte_string to_bytes(const wide_string& wstr);
@@ -187,17 +170,10 @@ In all cases:
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  return the converted byte string. Otherwise, if the object was
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  constructed with a byte-error string, the member function shall return
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  the byte-error string. Otherwise, the member function shall throw an
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  object of class `range_error`.
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- ``` cpp
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- using wide_string = basic_string<Elem, char_traits<Elem>, WideAlloc>;
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- ```
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-
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- The type shall be a synonym for
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- `basic_string<Elem, char_traits<Elem>, WideAlloc>`.
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-
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  ``` cpp
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  explicit wstring_convert(Codecvt* pcvt);
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  wstring_convert(Codecvt* pcvt, state_type state);
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  explicit wstring_convert(const byte_string& byte_err,
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  const wide_string& wide_err = wide_string());
@@ -291,16 +267,10 @@ streambuf* rdbuf(streambuf* bytebuf);
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  *Effects:* Stores `bytebuf` in `bufptr`.
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  *Returns:* The previous value of `bufptr`.
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- ``` cpp
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- using state_type = typename Codecvt::state_type;
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- ```
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-
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- The type shall be a synonym for `Codecvt::state_type`.
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-
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  ``` cpp
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  explicit wbuffer_convert(
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  streambuf* bytebuf,
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  Codecvt* pcvt = new Codecvt,
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  state_type state = state_type());
 
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  ## Deprecated convenience conversion interfaces <a id="depr.conversions">[[depr.conversions]]</a>
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+ ### General <a id="depr.conversions.general">[[depr.conversions.general]]</a>
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+
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  The header `<locale>` has the following additions:
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  ``` cpp
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  namespace std {
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  template<class Codecvt, class Elem = wchar_t,
 
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  - `cvtptr` — a pointer to the allocated conversion object (which is
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  freed when the `wstring_convert` object is destroyed)
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  - `cvtstate` — a conversion state object
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  - `cvtcount` — a conversion count
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  ``` cpp
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  size_t converted() const noexcept;
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  ```
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  *Returns:* `cvtcount`.
 
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  return the converted wide string. Otherwise, if the object was
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  constructed with a wide-error string, the member function shall return
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  the wide-error string. Otherwise, the member function throws an object
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  of class `range_error`.
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  ``` cpp
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  state_type state() const;
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  ```
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+ *Returns:* `cvtstate`.
 
 
 
 
 
 
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  ``` cpp
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  byte_string to_bytes(Elem wchar);
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  byte_string to_bytes(const Elem* wptr);
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  byte_string to_bytes(const wide_string& wstr);
 
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  return the converted byte string. Otherwise, if the object was
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  constructed with a byte-error string, the member function shall return
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  the byte-error string. Otherwise, the member function shall throw an
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  object of class `range_error`.
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  ``` cpp
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  explicit wstring_convert(Codecvt* pcvt);
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  wstring_convert(Codecvt* pcvt, state_type state);
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  explicit wstring_convert(const byte_string& byte_err,
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  const wide_string& wide_err = wide_string());
 
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  *Effects:* Stores `bytebuf` in `bufptr`.
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  *Returns:* The previous value of `bufptr`.
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  ``` cpp
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  explicit wbuffer_convert(
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  streambuf* bytebuf,
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  Codecvt* pcvt = new Codecvt,
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  state_type state = state_type());