Re: Incomplete compiler?

Bernhard Pfahringer <bernhard@cs.waikato.ac.nz>
1 May 2002 23:23:04 -0400

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From: Bernhard Pfahringer <bernhard@cs.waikato.ac.nz>
Newsgroups: comp.compilers
Date: 1 May 2002 23:23:04 -0400
Organization: Compilers Central
References: 02-04-147
Keywords: design, Lisp, comment
Posted-Date: 01 May 2002 23:23:03 EDT

Uwe Altenburg <Uwe.Uta.Altenburg@t-online.de> wrote:
>I would like to know, if there is a compiler (and a language) where I
>tell the compiler in the source-code how to compile the source? Let's
>say an "incomplete" or "simple" compiler that can be extended if
>needed or is this a "perpetuum mobile"?
>
>Thanks for comments
>Uwe
>[Look at the work done in the 1970s on extensible languages, where
>you could add BNF and semantics right in the middle of your program.
>It seemed like a cool idea but turned out to be useless. -John]


Actually there is a language where this capability is present and
considered essential by most advanced users:


Common Lisp with its macros and compiler-macros
  see e.g.
http://www-2.cs.cmu.edu/Groups/AI/html/hyperspec/HyperSpec/Body/mac_defmacro.html
http://www-2.cs.cmu.edu/Groups/AI/html/hyperspec/HyperSpec/Body/mac_define-compiler-macro.html


Bernhard
---------------------------------------------------------------------
Bernhard Pfahringer, Dept. of Computer Science, University of Waikato
http://www.cs.waikato.ac.nz/~bernhard +64 7 838 4041
[Well, yeah, Lisp. Do people write their own macro packages, or are
there popular ones that define dialects that programmers all use? -John]

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