I need to execute while loop, the parser rule is: while_ : WHILE^ LPAREN expression RPAREN DO (statement)* END ; my tree walker rules: while_ [bool OK] { ...
6233
John D. Mitchell
johnm-antlr@...
Sep 9, 2002 5:06 am
... [...] ... To be clear, Java v1.4 supports a number of I/O improvements in the "nio" (New I/O) package (such as memory-mapped files). Those changes have...
6234
Terence Parr
parrt2000
Sep 9, 2002 5:59 am
... Ouch. Dang! I'll look at the API, but this is something we could use by making a new constructor on the lexer to take a different kind o stream, right? ...
6235
Reid Rivenburgh
reidr
Sep 9, 2002 6:52 am
(Apologies again for taking so long to followup. I've been trying to read up on these things and avoid asking for help again, but I don't quite have my head...
6236
John D. Mitchell
johnm-antlr@...
Sep 9, 2002 6:52 pm
... [...] ... Depends. The memory mapped file channel stuff would definitely be nice to support. You should also check out the new Character Sequence stuff...
6237
fmateoc
Sep 9, 2002 11:56 pm
Hi, I am a newbie here and I would like to ask for your advice: I want to build a C to Java translator, one that would generate Java source as close as...
6238
Terence Parr
parrt2000
Sep 10, 2002 3:57 am
Folks, FYI, I'll be teaching a graduate language course at the University of San Francisco next semester (Spring 2003) in case anybody in the area wants to...
6239
Matt Benson
gudnabrsam
Sep 10, 2002 9:34 pm
I believe I begin to understand. Accounting for comments in the Java grammar, for example, would necessitate liberally sprinkling the tokens throughout the...
6240
Kevin "MiNdCRY&q...
mindcry2k
Sep 11, 2002 9:24 am
Hi, after using flex/bison for months (if not years), i thought it's time to get used to a more modern lexer/parser :-) actually i am playing around with antlr...
6241
John Allen Green
johnallengreen
Sep 11, 2002 10:57 am
Oops, thought of another way, which might be more what you are looking for, since you mentioned syntactic predicates. Leave the semantic checks within name_a...
6242
John Allen Green
johnallengreen
Sep 11, 2002 11:00 am
Hi Kevin, I'll try answering, but hopefully the experts will check my work. :-) I think you are trying to do things in an LR kind of way that won't work with...
6243
Kevin "MiNdCRY&q...
mindcry2k
Sep 11, 2002 11:07 am
ah thanks, this seem to work, man why i didn't think about this :-) thanks!! but still, it would be even better if i just could use it like name_a without...
6244
John Allen Green
johnallengreen
Sep 11, 2002 11:12 am
Antlr has a great feature called a "hidden token filter". You let the whitespace go through as tokens from your lexer, and then the filter decides what tokens...
6245
John Allen Green
johnallengreen
Sep 11, 2002 11:12 am
You might search the Antlr archives for requests for "hoisting";. It's probably what you have in mind, and no, Antlr doesn't do it (yet). Actually, I think...
6246
Matt Benson
gudnabrsam
Sep 11, 2002 1:30 pm
This looks very helpful, plus, for some reason, I have never been to this articles page! This may have been helpful all along! doh! Thanks, Matt ... ...
6247
Mark Johnson
MFJohnson98
Sep 12, 2002 2:40 am
While you are considering constructors how about adding a constructor which accepts either a string or a byte array? This would save me from having to convert...
6248
Hensley, Richard
richardhensl...
Sep 12, 2002 8:17 pm
I have an interesting parsing problem. I want dig certain context free constructs out of a file, while ignoring all the other constructs in the file. My...
6249
mzukowski@...
montyzukowski
Sep 12, 2002 8:20 pm
Check out a similar problem/solution at http://www.codetransform.com/filterexample.html I use a parser to find particular constructs and pass the rest on. Or,...
6250
lgcraymer
Sep 12, 2002 8:52 pm
Richard-- A brute force method would be to change your top-level definition to input: ( "create" ((table)=> table)? ... )* EOF ; with table being your...
6251
richardhensley99
richardhensl...
Sep 12, 2002 11:09 pm
I have a question about syntax predicates because I think I found a bug. I have the following grammar snippet startRule ... )* EOF ; createView ... ; ...
6252
richardhensley99
richardhensl...
Sep 12, 2002 11:26 pm
I see the following code generated in my Parser classes: private static final long[] mk_tokenSet_0() { long[] data = { 32754L, 0L, 0L, 0L }; return data; } ...
6253
lgcraymer
Sep 12, 2002 11:48 pm
Yeah, there's a synpred bug in 2.7--synpreds only work if they reference a single rule or token. I pointed this out to Ter a few months back, so it's probably...
6254
Hensley, Richard
richardhensl...
Sep 12, 2002 11:54 pm
Thanks for the response, now I know I'm not going nuts. I'm using the suggestion that you gave in an earlier e-mail for how to pick the blocks I wanted out of...
6255
Ric Klaren
izniegoed
Sep 13, 2002 8:28 am
Hi, ... antlr -diagnostic <yourgrammarfile> Should give you those I think (in a text file) Or alternatively you can turn on C++ codegen, ok it makes no sense...
6256
Hensley, Richard
richardhensl...
Sep 13, 2002 3:32 pm
Rick, Thanks for the tip about token sets. I'm using 2.7.2a2, and I found the syntax predicate bug, so I don't think the fix is there. Richard ... From: Ric...
6257
Terence Parr
parrt2000
Sep 13, 2002 4:54 pm
... Syn preds only work on more than one alt (>1 alt implies a decision); not sure what you referring to with the single rule/token thing. But in this case,...
6258
shyamgopale
Sep 14, 2002 7:09 pm
Hi, I am in the process of writing a parser for Python using antlr for a project. I have handled most of the Python grammar but am having problems specifying...
6259
John B. Brodie
jbb@...
Sep 14, 2002 9:54 pm
Shayam asked about transforming the following grammar fragment from the definition of Python for use in Antlr: /* Start of Grammar */ primary : atom |...
6260
Terence Parr
parrt2000
Sep 15, 2002 3:20 am
... Just fixed in latest 2.7.2a3; no longer generates the unnecessary loop. ... Added the Ctor back in that didn't ask for column. ... I have asked Ric what he...
6261
Terence Parr
parrt2000
Sep 15, 2002 3:55 am
... The code below is correct. ANTLR is being smart and putting in a quick sanity check before doing the backtrack. ANTLR checks that the lookahead is...
