Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.std.c++ > #484

The evolution of C++

Show all headers | View raw

hello, world\n

I'm writing a lexer aiming to be able to tokenize all the variations of
the C and C++ languages. My knowledge of the C++ side of things is
likely incomplete, so I ask the C++ community to tell me where I'm
missing something. So far I have come up with this matrix of token
additions since K&R.

      Language   K&R   C89   C99   C11 cfront C++98 C++11  Comment
 Tokens:
      ...         -     Y     Y     Y     ?     Y     Y
      Trigraphs   -     Y     Y     Y     ?     Y     Y
      Digraphs    -     -     Y     Y     ?     Y     Y
      #stringify  -     Y     Y     Y     ?     Y     Y
      gl##ue      -     Y     Y     Y     ?     Y     Y
      //Comment   -     -     Y     Y     Y     Y     Y
      Hexfloats   -     -     Y     Y     -     -     Y    0xABC.DEFp+42
      ::          -     -     -     -     Y     Y     Y
      .*          -     -     -     -     ?     Y     Y
      ->*         -     -     -     -     ?     Y     Y
      L"String"   -     Y     Y     Y     ?     Y     Y    Wide string literals
      L'C'        -     Y     Y     Y     ?     Y     Y    Wide
character constants
      \[uU] IDs   -     -     Y     Y     -     -     Y    \uABCD in identifiers
      U|u|u8"S"   -     -     -     Y     -     -     Y    Unicode prefixes
      U|u'C'      -     -     -     Y     -     -     Y    Unicode prefixes
      R"String"   -     -     -     -     -     -     Y    Raw strings
      "String"x   -     -     -     -     -     ?     Y    User defined suffix

 Notes: - Digraphs are actually a C94 feature.

I'm especially interested in the cells marked '?'. Are there tokens in
C++03 calling for a separate column? Thanks for your comments!


Regards,

       Jens
--
Jens Schweikhardt http://www.schweikhardt.net/
SIGSIG -- signature too long (core dumped)


[ comp.std.c++ is moderated.  To submit articles, try posting with your ]
[ newsreader.  If that fails, use mailto:std-cpp-submit@vandevoorde.com ]
[              --- Please see the FAQ before posting. ---               ]
[ FAQ: http://www.comeaucomputing.com/csc/faq.html                      ]

Back to comp.std.c++ | Previous | Next — Next in thread | Find similar

Thread

The evolution of C++ Jens Schweikhardt <usenet@schweikhardt.net> - 2012-04-22 11:51 -0700
  Re: The evolution of C++ Marc <marc.glisse@gmail.com> - 2012-04-24 11:04 -0700

csiph-web