Hello,
I would like to know if %wildcard is an undocumented feature on purpose, is
this safe to use it?
if yes, could it be added in the documentation?
ps: I am pretty impressed by lemon, I am really having fun.
Best regards,
Sylvain
___
sqlite-users
On Sat, Jul 26, 2014 at 11:10 AM, Sylvain Pointeau
sylvain.point...@gmail.com wrote:
Hello,
I would like to know if %wildcard is an undocumented feature on purpose, is
this safe to use it?
Historical note: I wrote Lemon back in the 80s (on a Sun3, IIRC) because
the $1,$2,$3 notation of
Hello,
Le samedi 26 juillet 2014, Richard Hipp d...@sqlite.org a écrit :
Historical note: I wrote Lemon back in the 80s (on a Sun3, IIRC)
You were a visionary, Lemon is probably the only viable option for a parser
generator in C/C++ at this moment.
because
the $1,$2,$3 notation of Yacc
I see; well, that's unfortunate. At any rate, parsing lempar.c will
probably be much more complex than the code I have now, which solves a
simple (but common) case. Maybe I'll look into parsing lempar.c, but since
this solves my use case, I probably won't be in a hurry to do it. I
apologise to
Oops, Dominique alerted me to the fact that the patch I included was
stripped by the listserver... I'm including it inline, then.
(Begin patch)
--- lemon.c2013-01-04 20:39:20 +
+++ lemon-new.c2013-01-04 23:09:59 +
@@ -109,7 +109,7 @@
void Reprint(struct lemon *);
void
On Mon, Jan 7, 2013 at 4:18 PM, Tiago Rodrigues wtrm...@gmail.com wrote:
Oops, Dominique alerted me to the fact that the patch I included was
stripped by the listserver... I'm including it inline, then.
This patch does not work in the general case. I don't doubt that it works
for your use
Hello, all,
First, forgive me if this is the wrong medium for submitting this, but I'm
rather new at this patch submission business. Anyway, I was using Lemon to
generate a few parsers for a program I'm writing (which uses SQLite, too,
for storage), and I noticed that the files I used to call
Hi list,
I'm having a little trouble getting my head around memory management within a
Lemon-generated parser. Specifically the part of the docs stating when a
destructor will or will not be called.
For example, this is a portion of a grammar based on the SQLite parse.y file:
columnName ::=
On Thu, Oct 18, 2012 at 3:03 PM, Ben sqlite_l...@menial.co.uk wrote:
Hi list,
I'm having a little trouble getting my head around memory management
within a Lemon-generated parser. Specifically the part of the docs stating
when a destructor will or will not be called.
For example, this is a
On 18 Oct 2012, at 20:07, Richard Hipp d...@sqlite.org wrote:
On Thu, Oct 18, 2012 at 3:03 PM, Ben sqlite_l...@menial.co.uk wrote:
Hi list,
I'm having a little trouble getting my head around memory management
within a Lemon-generated parser. Specifically the part of the docs stating
On Sat, Jan 07, 2012 at 10:18:12AM -0500, Richard Hipp wrote:
|| On Wed, Jan 4, 2012 at 11:00 AM, Vincent Zweije vinc...@zweije.nl wrote:
||
|| I may have hit a bug in the lemon parser generator.
||
||
|| Please see if the following fix clears your problem:
||
||
On Wed, Jan 4, 2012 at 11:00 AM, Vincent Zweije vinc...@zweije.nl wrote:
I may have hit a bug in the lemon parser generator.
Please see if the following fix clears your problem:
http://www.sqlite.org/src/info/ce32775b23
It looks like lookahead symbols aren't propagated properly, in
I may have hit a bug in the lemon parser generator.
It looks like lookahead symbols aren't propagated properly, in some cases.
The consequence is that in some states, valid symbols are rejected with
a syntax error.
The complete grammar can be found at
http://www.zweije.nl/~vzweije/parser.y
Hi,
I'm attempting to rewrite a buggy hand-written parser with a re2c / lemon one.
I've ran into a strange thing (which is/was actually a bug in the lexer), but I
can't determine why lemon finishes parsing, instead of throwing up a parser
error.
The stripped-down parser :
[igmar@devel
On Tue, Dec 07, 2010 at 08:09:53PM +0100, Begelman, Jamie wrote:
I'm using Lemon for a non-sqlite related project and it is exiting with an
assertion failure that I would like to understand. I have extracted the
following small set of productions from a larger grammar. The list
production
I'm using Lemon for a non-sqlite related project and it is exiting with an
assertion failure that I would like to understand. I have extracted the
following small set of productions from a larger grammar. The list production
happens to be the start symbol in the larger grammar.
list::=
On Tue, Oct 12, 2010 at 6:54 PM, Vincent Adam Burns discol...@gmail.comwrote:
Is there an active maintainer for the Lemon Parser? I'm getting some
parsing conflicts, ex:
statement ::= IF LEFT_PAREN expression RIGHT_PAREN statement ELSE
statement.
statement ::= IF LEFT_PAREN expression
Hi
How could I force lemon assign a specific major number to a terminal? I need
that in order to make a lemon-generated parser work together with an already
existing scanner which is not under my control, and I'd like not to fall
back to manual translation.
Actually manual translation would
On Tue, Apr 6, 2010 at 10:40 PM, Dan Kennedy danielk1...@gmail.com wrote:
On Apr 7, 2010, at 3:23 AM, Chris verBurg wrote:
Hehe, okay, here I go. :)
I'm trying to replace an existing flex/bison parser with an re2c/lemon
parser, but I'm running into a methodological problem. I have
Hey guys,
I'm using the Lemon parser and running into a methodological problem that I
wanted to ask the user base about. Is there a mailing list or forum
specifically for Lemon, or is this it? :)
Thanks,
-Chris
___
sqlite-users mailing list
I'm using the Lemon parser and running into a methodological problem
that
I
wanted to ask the user base about. Is there a mailing list or forum
specifically for Lemon, or is this it? :)
Thanks,
-Chris
There is no mailing list specifically for lemon. Some of us are
familiar to various
Hehe, okay, here I go. :)
I'm trying to replace an existing flex/bison parser with an re2c/lemon
parser, but I'm running into a methodological problem. I have a
hypothetical grammar like this:
file ::= FOO str .
file ::= BAR str .
Where my keywords are FOO and BAR, and str is any ol'
On Apr 7, 2010, at 3:23 AM, Chris verBurg wrote:
Hehe, okay, here I go. :)
I'm trying to replace an existing flex/bison parser with an re2c/lemon
parser, but I'm running into a methodological problem. I have a
hypothetical grammar like this:
file ::= FOO str .
file ::= BAR str .
With all the good changes to lemon recently, I thought I'd post changes that I
have made to my personal copy. One of my customers requires that I demonstrate
the version of all build tools I use at build time, so I added a few command
line parameters to help with that.
It would be nice if the
Hi,
Can I somehow simulate a syntax error from within a rule action ? This
parser looks up the token it receives, and I want to abort futher
parsing in case that the lookup fails. as if there was a syntax error in
the grammar.
Regards,
Igmr
I'm using lemon to write a parser for a little language I'm writing.
I'm wondering how I indicate to lemon that an error has occurred in
processing and an exit is needed. For example, if I have:
stmt(A) ::= NAME(B). { A = malloc(sizeof(stmt)); A-name = B; }
If malloc returns NULL, what should I
On Dec 22, 2009, at 6:06 PM, Benjamin Peterson wrote:
I'm using lemon to write a parser for a little language I'm writing.
I'm wondering how I indicate to lemon that an error has occurred in
processing and an exit is needed. For example, if I have:
stmt(A) ::= NAME(B). { A =
-users-boun...@sqlite.org [mailto:sqlite-users-boun...@sqlite.org]
On Behalf Of ferrety ferrety
Sent: Monday, June 08, 2009 7:15 PM
To: sqlite-users@sqlite.org
Subject: [sqlite] Lemon parser : compile error when using %token_destructor
directive
Hi List,
This is the only place I found to ask
|| Subject: [sqlite] Lemon parser : compile error when using
%token_destructor directive
||
|| Hi List,
|| This is the only place I found to ask for lemon parser error.
||
|| When trying to use the %token_destructor directive:
||
|| %include {
|| #include stdio.h
|| void token_dtor (struct Token * t
To: Wilson, Ron P
Cc: General Discussion of SQLite Database
Subject: Re: [sqlite] Lemon parser : compile error when using
%token_destructor directive
On Mon, Jun 15, 2009 at 11:42:26AM -0400, Wilson, Ron P wrote:
|| It has been a while since I used lemon (big fan though). Did you resolve
Hi List,
This is the only place I found to ask for lemon parser error.
When trying to use the %token_destructor directive:
%include {
#include stdio.h
void token_dtor (struct Token * t)
{
fprintf(stderr, In token_destructor: t - value=%s\n, t - value);
}
}
%token_destructor {
On Aug 17, 2008, at 1:48 PM, Markus Thiele wrote:
Greetings,
I've been using Lemon for a small custom compiler project. I've used
Bison before, and I very much prefer the way Lemon does things,
there's
just one feature I'm missing and haven't been able to find.
Bison generates a human
Greetings,
Lemon does not have any feature that will provide the application with
access to the follow-set. You could perhaps tease that informatino
out of the *.out output file using a script, though.
Capital idea! That does indeed do the trick. It's straightforward to
extract the
Greetings,
I've been using Lemon for a small custom compiler project. I've used
Bison before, and I very much prefer the way Lemon does things, there's
just one feature I'm missing and haven't been able to find.
Bison generates a human readable error message on syntax errors, and
when setting
Hi,
Can u send me any documentation on LEMON that u have worked out.
I have some queries also.
1.Does LEMON work on Windows environment?
2.I tried but it is not.I heard that it works on Linux environment.I am
trying to know why not on windows...can u give me some info about it
I am
Hi Arjen,
Thanks for the mail...I found it very helpful and i started to execute
it..I succeeded in doing it...
However i started writing a sample program for converting Infix to
Prefix...I am struck at this point ...so can u help me in
writing this program...
Thanks in advance
arjunkumar keerti wrote:
Hi,
I found in wikipedia that Lemon parser is a part of SQLite project but i
couldn't found any sort of information regarding to LEMON.
Can u give me any documentation regarding how to install it and how to work
for some programs on Lemon parser generator or any URL's
Hi,
I found in wikipedia that Lemon parser is a part of SQLite project but i
couldn't found any sort of information regarding to LEMON.
Can u give me any documentation regarding how to install it and how to work
for some programs on Lemon parser generator or any URL's that might be
helpful and can
Many thanks, Joe,
Your grammar is ambiguous. The text tokens run together for
various rules because the grammar lacks clear separators between
them.
OK, I begin to understand. The clear separators need to be TERMINALs, right?
I believed that these were imlicit because there are TEXT and LINK
--- Ralf Junker [EMAIL PROTECTED] wrote:
paragraph ::= PARA text.
I observed the new PARA terminal token (the clear separator!?). Unfortunately
the lexer does not
generate such a token. Paragraph repeats are also removed.
It was just an HTML-like example. I just wanted to demonstrate one
Joe Wilson [EMAIL PROTECTED] wrote:
The following grammar may be clearer to you:
Yes, it is many thanks! I believe I am making progress! At least I can see the
picture much clearer now and was able to come up with the following grammar
with just one conflict unsolved:
%left NEWLINE.
I am trying to write a Wiki parser with Lemon. The Lemon features suite my
needs perfectly, but I am unfortunately stuck with the problem of parsing
conflicts.
All conflicts seem caused by repeat constructs like this:
text ::= textpiece.
text ::= text textpiece.
The complete grammar
--- Ralf Junker [EMAIL PROTECTED] wrote:
article ::= blocks.
blocks ::= block.
blocks ::= blocks block.
block ::= heading.
block ::= paragraph.
heading ::= HEADING_START text HEADING_END.
heading ::= HEADING_START text.
heading ::= HEADING_START.
paragraph ::= text NEWLINE.
Hello,
I have a problem with a rule of a small calculator which accept variables :
assignment(A) ::= VARIABLE(C) EQUAL expr(B).
I can set variable with simple value or expression like :
a=2
b=2+3
but when I try :
c=a+b
The result is put in variable b instead of c.
Is it my bug or a Lemon bug
It's most likely your bug. Just add some debug prints in your grammar
and tokenizer to see what's going on.
See also: ParseTrace() in http://www.hwaci.com/sw/lemon/lemon.html
--- Téragone [EMAIL PROTECTED] wrote:
I have a problem with a rule of a small calculator which accept variables :
Hello,
I finally find the bug. In fact that was many bugs.
- Grammar rule order.
- Input string not reseted properly.
Thank you.
David
On Nov 18, 2007 10:30 AM, Joe Wilson [EMAIL PROTECTED] wrote:
It's most likely your bug. Just add some debug prints in your grammar
and tokenizer to see
For those reading this thread, I could solve my problme by using ragel
(http://www.cs.queensu.ca/~thurston/ragel/). You can define leaving
actions but also 'any change' actions. It was also easier to include
in a C++ project then lemon/flex. If my grammar becomes more
complicated, I heard it is
I do not understand why lemon waits for one more token when it has
enough information to reduce
...
I don't think you can. Why do you want to? Why not just go
ahead and send it the next token?
Most people find a way around this problem using white-space. This
could be a solution
I do not understand why lemon waits for one more token when it has
enough information to reduce.
I want to recognize :
foo = Bar()
when the token CLOSE_PAR is received, not when an extra token is parsed.
How can I avoid lemon waiting for the extra token before reducing ?
Thanks for your help !
Gaspard Bucher [EMAIL PROTECTED] wrote:
I do not understand why lemon waits for one more token when it has
enough information to reduce.
I want to recognize :
foo = Bar()
when the token CLOSE_PAR is received, not when an extra token is parsed.
How can I avoid lemon waiting for the extra
Gaspard Bucher [EMAIL PROTECTED] wrote:
I do not understand why lemon waits for one more token when it has
enough information to reduce.
I want to recognize :
foo = Bar()
when the token CLOSE_PAR is received, not when an extra token is parsed..
How can I avoid lemon waiting for
PS: There is another reason, aside from aesthetics and simpler grammar
to filter white spaces inside the tokenizer: you avoid all the parser
conflicts you could get with empty | or space rules.
2007/10/24, Gaspard Bucher [EMAIL PROTECTED]:
Gaspard Bucher [EMAIL PROTECTED] wrote:
I do not
Gaspard Bucher wrote:
PS: There is another reason, aside from aesthetics and simpler grammar
to filter white spaces inside the tokenizer: you avoid all the parser
conflicts you could get with empty | or space rules.
2007/10/24, Gaspard Bucher [EMAIL PROTECTED]:
Gaspard Bucher [EMAIL
I am writing to ask for help about how to solve The Lemon parser conflicts.
As part of a larger grammar, I am need to implement this regular expression in
Lemon:
(.+|'.+')+
I tried lots of grammars, but all of them generated Lemon warnings.
Maybe someone could have a look at the grammar
Ralf Junker [EMAIL PROTECTED] wrote:
I am writing to ask for help about how to solve The Lemon parser conflicts.
As part of a larger grammar, I am need to implement this regular expression
in Lemon:
(.+|'.+')+
I tried lots of grammars, but all of them generated Lemon warnings.
Richard,
this helped me greatly! I also derived from your example that I can use
multiple characters without conflicts like this:
---
doc ::= inline_list.
// List of allowed characters. Add more as you like.
c ::= CHAR.
c ::= SPACE.
// The c character repeat.
chars ::= c.
chars
Richard,
this helped me greatly! I also derived from your example that I can use
multiple characters without conflicts like this:
---
doc ::= inline_list.
// List of allowed characters. Add more as you like.
c ::= CHAR.
c ::= SPACE.
// The c character repeat.
chars ::= c.
chars
I had posted earlier to find if Lemon parser can be made modular. As per
previous post responses, who had advised that I look in lemon parser forum. But
I could not find a separate forum.
Please refer to the following link to get a better idea of what I'm trying to
do:
Uma Krishnan uttered:
Hey, There's no need to be offensive. I did not mean to be critical. Far
from it, it does a great a job (far more than I'm capable of producing).
What I was trying to find out was, if it is possible for a .y files to
be broken such that it can be built on top on other .y
Uma Krishnan uttered:
Hello:
Is lemon parser modular and extensible?
Extensible to do what? It generates parsers, and is self contained. It
does a single job, and does it well. What more could you ask for?
Thanks
Uma
Asif Lodhi [EMAIL PROTECTED] wrote:
Hi Everybody,
I have just
Hey, There's no need to be offensive. I did not mean to be critical. Far from
it, it does a great a job (far more than I'm capable of producing). What I was
trying to find out was, if it is possible for a .y files to be broken such that
it can be built on top on other .y files.
Not sure
Hello:
Is lemon parser modular and extensible?
Thanks
Uma
Asif Lodhi [EMAIL PROTECTED] wrote:
Hi Everybody,
I have just joined this mailing list as Sqlite looks like a good
software solution to my needs. What I need right now is RE-assurance
of crash-recovery that is
Hi,
Firstly, if this is not the proper forum for Lemon questions, please let
me know where I need to go...
Second, I am looking at a SQL grammer written for Lemon parser generator
and am failing to see where some terminals are defined. For example
COMMA, FROM, SELECT are terminals and
Medi,
Lemon is a parser, not a lexer. The terminals are defined outside of
Lemon. Perhaps you inherited the .y file but did not receive the
lexer/tokenizer?
SQLite, for example, has a hand-coded tokenizer. Other projects (such
as my own) may use a lexer-generator such as flex.
In
Thanks Ulrik...I am now looking for the lexer...
Medi
-Original Message-
From: Ulrik Petersen [mailto:[EMAIL PROTECTED]
Sent: Friday, May 04, 2007 4:30 PM
To: sqlite-users@sqlite.org
Subject: Re: [sqlite] Lemon parser generator question
Medi,
Lemon is a parser, not a lexer
Thanks again Ulrik...the problem was with the tokenizer and not the
parser...
Medi
-Original Message-
From: Medi Montaseri [mailto:[EMAIL PROTECTED]
Sent: Friday, May 04, 2007 5:14 PM
To: sqlite-users@sqlite.org
Subject: RE: [sqlite] Lemon parser generator question
Thanks Ulrik...I am
[EMAIL PROTECTED] wrote:
then I use the command
lemon parse.y
I successfully get the parse.h file
but the file is not right.
I only get 137 ids
the follwing 15 ids do not exist in the parse.h
TK_TO_TEXT
TK_CONST_FUNC
You need to run the awk script addopcodes.awk in
I compile the lemon.c in vc6 environment. (build it the win32 console
application )
then I use the command
lemon parse.y
I successfully get the parse.h file
but the file is not right.
I only get 137 ids
the follwing 15 ids do not exist in the parse.h
TK_TO_TEXT
TK_TO_BLOB
TK_TO_NUMERIC
I want to know if I can here public some LEMON PARSER examples that I have
done... because as i far i know LEMON is maintained into SQLite project.
Best Regards
--
Cesar Rodas
http://www.cesarodas.com/
Mobile Phone: 595 961 974165
Phone: 595 21 645590
[EMAIL PROTECTED]
[EMAIL PROTECTED]
Cesar Rodas wrote:
The URL is ok, I opened here...
Works fine in .uk too
Martin
-
To unsubscribe, send email to [EMAIL PROTECTED]
-
Here is Lemon tutorial. Shows how to make a calculator with a feature of
use Parents () in math expression.
http://www.cesarodas.com/2007/03/creating-basic-calculator-with-lemon.html.
The author disclaims the copyright of the calculator.
--
Cesar Rodas
http://www.sf.net/projects/pagerank
Cesar Rodas wrote:
Here is Lemon tutorial. Shows how to make a calculator with a feature of
use Parents () in math expression.
http://www.cesarodas.com/2007/03/creating-basic-calculator-with-lemon.html.
The author disclaims the copyright of the calculator.
There's a problem with that URL.
The URL is ok, I opened here... try again and let me know if you could not
and I will email you the content of the example.
On 05/03/07, Clay Dowling [EMAIL PROTECTED] wrote:
Cesar Rodas wrote:
Here is Lemon tutorial. Shows how to make a calculator with a
feature of
use Parents () in math
URL didn't work for me either, but you'll see what you want at the root
(at least today):
http://www.cesarodas.com/
-Original Message-
From: Cesar Rodas [mailto:[EMAIL PROTECTED]
Sent: Monday, March 05, 2007 10:44 AM
To: sqlite-users@sqlite.org
Subject: Re: [sqlite] Lemon example
[EMAIL PROTECTED] schrieb:
dear all:
i am a programmer from China, i use sqlite in my project.
from sqlite, i know lemon.
i work on windows, using vc6.0, i am trying to do something using lemon,
but i have some issues.
i write a my_calculator.y file, and generate
Where can i find a tutorial with examples of how to use LEMON parser...
because i need to build interpreted language
Thanks to all
--
Cesar Rodas
http://www.phpclasses.org/grank (A PHP implementation of PageRank)
Ethereal make use of Lemon
On Fri, 2006-12-29 at 11:08 -0400, Cesar Rodas wrote:
Where can i find a tutorial with examples of how to use LEMON parser...
because i need to build interpreted language
Thanks to all
__
Scanned and protected by Email scanner
Another URL where i can find a tutorial?
On 29/12/06, Lloyd [EMAIL PROTECTED] wrote:
Ethereal make use of Lemon
On Fri, 2006-12-29 at 11:08 -0400, Cesar Rodas wrote:
Where can i find a tutorial with examples of how to use LEMON parser...
because i need to build interpreted language
Thanks
Clifton Park, New York 12065
518-371-3983 x113 (work)
860-508-5015 (cell)
-Original Message-
From: Cesar Rodas [mailto:[EMAIL PROTECTED]
Sent: Friday, December 29, 2006 11:17 AM
To: sqlite-users@sqlite.org; [EMAIL PROTECTED]
Subject: Re: [sqlite] LEMON
Another URL where i can find a tutorial
I'm not familiar with Lemon, so I don't know if this will help:
http://linuxgazette.net/106/chirico.html. Also, I'd highly recommend just
doing a Google search for either Lemon Parser or Lemon Tutorial.
--
Eric Pankoke
Founder / Lead Developer
Point Of Light Software
:17 AM
To: sqlite-users@sqlite.org; [EMAIL PROTECTED]
Subject: Re: [sqlite] LEMON
Another URL where i can find a tutorial?
On 29/12/06, Lloyd [EMAIL PROTECTED] wrote:
Ethereal make use of Lemon
On Fri, 2006-12-29 at 11:08 -0400, Cesar Rodas wrote:
Where can i find a tutorial with examples
: [sqlite] LEMON
Lemon generates C files that could be compiled in Win or Linux Right?
On 29/12/06, Downey, Shawn [EMAIL PROTECTED] wrote:
http://www.hwaci.com/sw/lemon/lemon.html
Sorry if this link has already been pointed out to you.
http://www.webdotdev.com/nvd/server-side/c/lemon-parser
Michael Somos wrote:
I found the following for lemon in the sqlite-3.3.6 distribution :
===
lemon -x
Lemon version 1.0
lemon /dev/null
Segmentation fault
gdb ./lemon
GNU gdb 6.4
Copyright 2005
I found the following for lemon in the sqlite-3.3.6 distribution :
===
lemon -x
Lemon version 1.0
lemon /dev/null
Segmentation fault
gdb ./lemon
GNU gdb 6.4
Copyright 2005 Free Software Foundation, Inc.
GDB is free
With Bison, you can do something like this (not quite bison syntax):
myrule: TYPE IDENT {DoSomethingRightAfterIdent($1,$2); } LP more_rules
RP; {DoSomethingAfterEverything($1,$2,$5); }
I.e. you have a chunk of C code that's called in the middle of the
processing of the production. (In the above
Ludvig Strigeus wrote:
With Bison, you can do something like this (not quite bison syntax):
myrule: TYPE IDENT {DoSomethingRightAfterIdent($1,$2); } LP more_rules
RP; {DoSomethingAfterEverything($1,$2,$5); }
I.e. you have a chunk of C code that's called in the middle of the
processing of the
I'm using lemon to make a simple parser.I want to get more descriptive
error messages.
Right now, it prints
Syntax error near '123'.
Is there some way to make it print
Syntax error near '123', expecting ';'
or something similar?
/Ludvig
[EMAIL PROTECTED] wrote:
Freshmeat has a tutorial on the Lemon Parser Generator.
http://freshmeat.net/articles/view/1270/
This tutorial walks you through a simple calculator.
It would be also interesting to have an example of using Lemon + RE2C
(http://re2c.sf.net). I think RE2C lexer works
Freshmeat has a tutorial on the Lemon Parser Generator.
http://freshmeat.net/articles/view/1270/
This tutorial walks you through a simple calculator.
Regards,
Mike Chirico
On Thu, Aug 05, 2004 at 09:07:36AM -0400, Joseph Stewart wrote:
Many thanks for your contribution!
-joe
On Wed, 4 Aug 2004 22:02:48 -0400, [EMAIL PROTECTED]
[EMAIL PROTECTED] wrote:
A user earlier posted a question about terminating
the grammer for a simple calculator done with lemon.
Many thanks for your contribution!
-joe
On Wed, 4 Aug 2004 22:02:48 -0400, [EMAIL PROTECTED]
[EMAIL PROTECTED] wrote:
A user earlier posted a question about terminating
the grammer for a simple calculator done with lemon.
I ran into the same problem and had to use
the following, which
A user earlier posted a question about terminating
the grammer for a simple calculator done with lemon.
I ran into the same problem and had to use
the following, which worked fine:
main ::= in.
in ::= .
in ::= in state NEWLINE.
I cannot reduce it any further. For
On Tue, 2 Aug 2004, John Cohen wrote:
in ::= in stmt ENDLINE.
But that doesn't seem to work in lemon. I've also tried making the 2nd
statement right recursive, but that doesn't work either because it doesn't
seem to ever reduce all the way.
Any ideas? Much thanks to all.
Just make the
D. Richard Hipp wrote:
John Cohen wrote:
The last suggestion worked great (thanks!). But still, I still have a
small problem. It won't accept more than one 'statement'. I know
why, but can't fix it. Take a look:
$ ./a.out
7 + 9 + 7 + 3 / (5 + 7);
23.25
3 + 3 + 3;
Fatal Error: Parser
I'll second sporkey, would you be able to post your calc source for us
all to see?
TIA,
-j
On Tue, 03 Aug 2004 15:38:53 -0400, John Cohen [EMAIL PROTECTED] wrote:
Hi all,
Thanks for all the help! I got it all working fine.. The wrapper did the
trick - I also want to try some speed tests
Monday, August 2, 2004, 12:49:50 AM, John Cohen wrote:
My problem is the fact I cannot use the start token on the right hand of the
rule. [...]
How can I get this to accept things such as:
5 + 5 + 5
5 + 6
?
[I have never used lemon, but perhaps something like...]
expr := term | ...
Date: Mon, 02 Aug 2004 23:51:15 -0400
Mime-Version: 1.0
Content-Type: text/plain; format=flowed
Aha! =)
The last suggestion worked great (thanks!). But still, I still have a small
problem. It won't accept more than one 'statement'. I know why, but can't
fix it. Take a look:
$ ./a.out
7 +
Hi,
I've used bison for a while now, and gotten pretty proficient at the
grammar, but hearing how LEMON has some pretty nice features (i.e. terminal
destructors) I decided to try it out, but I can't even get a simple
calculator to work with it. I can get the tokenizer written fine, but just
Sean Chittenden wrote:
Howdy. Having been fed up with bison/yacc, I switched to using lemon
and have found lemon to be a vastly more enjoyable tool to work with
compared to bison (thank you!). That said, before I embarked on my
wholesale conversion to lemon, I went and recreated a calculator
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