I am thinking of writing a mat lab compiler. Seems to be a good target for vectorisation. Does anyone have any experience with interfacing to the mat lab...
524
Graham Toal
graham_toal
Nov 14, 2004 11:29 pm
I finally converted some scans I made last year into a form that can be viewed on the web. This was a paper that had a lot of influence on me when I was ...
... Byte codes are all very well for object files, but as you've discovered are not so good for actually holding the program code in memory while running...
528
Graham Toal
graham_toal
Jan 11, 2005 4:24 am
I finally sat down and hacked out how to do operator precedence properly using an AST, and a grammar which does not embody precedence in the grammar. It turns...
529
Graham Toal
graham_toal
Jan 12, 2005 5:36 am
I explained the operator precedence algorithm a bit better on my Wiki: http://www.gtoal.com/software/OperatorPrecedence If anyone knows of any other references...
530
ed_davis2
Jan 12, 2005 2:18 pm
... This looks very interesting. Can you provide definitions for the following? TRIP opsym rightchild prio arity leftchild...
531
Graham Toal
graham_toal
Jan 13, 2005 12:31 am
... "triple", i.e. an AST node. (it's just an int) ... the operator ('+', '*' etc) ... right branch of an AST node ... priority of an operator ... no. of...
532
Graham Toal
graham_toal
Jan 13, 2005 2:20 am
for more operator precedence fun, I wrote up a silly algorithm that I learned at Edinburgh back in the 70's: ...
533
ed_davis2
Jan 21, 2005 4:06 pm
I have a YACC grammar (complete with attributes) that I'd like to convert to recursive descent. The grammar is for a Pascal subset, so the language can be...
534
Graham Toal
graham_toal
Jan 21, 2005 6:37 pm
... No, it's quite reasonable. But first you have to refactor the grammar from left-recursive to right-recursive, eg EXPR :== <expr> <op> <term> ... becomes ...
535
Ed Davis
ed_davis2
Jan 26, 2005 2:17 pm
I ran across an interesting language called Euphoria. It is a general-purpose imperative language. But what really distinguishes it is a datatype called a...
536
Graham Toal
graham_toal
Jan 27, 2005 1:27 am
... It's a good idea. Of course it was also a good idea when it was first invented. Anyone remember POP2? LOGO? One of the few useful cross-overs from...
537
Graham Toal
graham_toal
Jan 27, 2005 5:22 am
... It's clean, but there's nothing new or clever. It's a standard compiler implementation much like PL/0, Tiny Pascal, Pascal-S, etc. see also Programming...
538
Rick Clark
rickclark58
Jan 28, 2005 8:22 pm
This appears to be an interesting tool: PLC, or Programming Language Creator. Supposedly you can create your own programming language and run it in their...
539
ed_davis2
Mar 5, 2005 2:30 pm
What do you think about local functions (as in Pascal, Modula2, Oberon, Ada, etc.)? I can't decide whether I love them or hate them. For instance, I've seen...
540
Graham Toal
graham_toal
Mar 5, 2005 4:30 pm
... Pro. Back in the days when the only choices were Fortran or Algol, nested functions were the default expectation, and Fortran was seen as being deficient;...
541
Ed Davis
ed_davis2
Mar 7, 2005 5:24 pm
... My very first Language was Fortran, in a college course in 1977. While I liked programming, I didn't much care for Fortran. My next language was Algol-W,...
542
kndoro
Mar 7, 2005 6:52 pm
I have developed a small language (compiler to p-code , p-code interpreter ) using Cocor compiler construction tool and c++. I am a novice in compiler...
543
Graham Toal
graham_toal
Mar 7, 2005 7:25 pm
... Passing on a note from one of our members who knows a lot more about this than me (mildly edited [in brackets] for context): } Nested procedures aren't...
544
kndoro
Mar 7, 2005 7:42 pm
I NOTICED THAT THE DIAGRAM CAME OUT BADLY IN THE LAST POST , HERE IT IS AGAIN. MEMORY CELL ARRAY _________ [|Memory |] [|Cell 1 |] [|_______|] [|Varname|] ...
545
arkuylen
Mar 15, 2005 10:12 pm
Hi: I really need help here. The following code contains my Flex file which is already finished, my Bison file which I'm told is all wrong, and a copy of...
546
Mauro Persano
mauro_persano
Mar 15, 2005 10:50 pm
Hello, ... For starters, the syntax of your yacc file seems to be wrong. For instance, when you say open_decl ECL_OPEN ... it probably should look like ...
547
Alfred Kuylen
arkuylen
Mar 16, 2005 2:45 pm
Dear Mauro: Yes it is. But of a different kind. I'm supposed to take xml code, parse it, use C, and finally input this data as sql. I said its homework,...
548
Graham Toal
graham_toal
Mar 16, 2005 3:13 pm
... and finally input this data as sql. I said its homework, but of a different kind, because its a project which will be counted on as a final. In other...
549
Paul Cockshott
wpc@...
Apr 5, 2005 2:22 pm
It is worth bearing in mind that Intel machines directly support displays with the ENTER and LEAVE instructions. These automate the setting up of the display....
550
Graham Toal
graham_toal
May 13, 2005 3:58 am
... The page above is slightly updated, and I've used that algorithm in a real(ish) program: http://www.gtoal.com/athome/utils/xpp.c.html It's worth having a...
551
Rick Clark
rickclark58
May 13, 2005 4:03 pm
... Heh, it just shows that some things never go out of style. Thanks for the example. Rick Clark Discover Yahoo! Find restaurants, movies, travel and more fun...
552
Ed Davis
ed_davis2
Jun 4, 2005 5:26 pm
I'm trying to figure out which is the best way to parse the following simple grammar, using a hand-written parser: stmtseq = {stmt} stmt = "if" expr "then"...
