That's an ANTLR request (which has already been considered), not a Works request.
However, the new IDE should use a smarter parser that can handle incomplete syntax better - as in, it is coded to recognize such things where it is possible. Note that autocomplete does not really work for ANTLR grammars as almost all tokens can be a possibility in most places. Jim > -----Original Message----- > From: antlr-interest-boun...@antlr.org [mailto:antlr-interest- > boun...@antlr.org] On Behalf Of Douglas Godfrey > Sent: Thursday, September 08, 2011 5:45 AM > To: Terence Parr; Antlr-Interest Antlr.Org > Cc: Colin Bean > Subject: Re: [antlr-interest] ANTLRWorks 2 (for ANTLR v4) > > How about a direct language feature to issue a warning or error on > parsing a rule... > > I.e. you have a grammar where certain improper syntax is expected. You > make a rule that will recognize the improper syntax or semantics and > issue a syntax error with a better error description when the rule is > matched. The side effect of encountering an error rule is the normal > unwinding that occurs on a parse failure. > > > On 9/1/11 2:18 PM, "Terence Parr" <pa...@cs.usfca.edu> wrote: > > >Hi, In parallel with the development of ANTLR v4, superstar Colin Bean > >will be building the new version of ANTLRWorks. We already have a > great > >base in what Jean Bovet did for the 1st version. It's a known entity > and > >has lots of bookkeeping code that we can cut and paste into the new > one > >such as the automatic update facility and preferences. Because we've > got > >something to play with, we have something to critique and also a basic > >target. > > > >I can imagine the basic tool being missing but it would be great to > get > >feedback from the antlr community. Remember, that there are probably > 2 > >main communities: the people new to languages and/or ANTLR and the > people > >very used to working with ANTLR grammars. For example, new people tend > to > >like the syntax diagrams but many old-timers like myself prefer > looking > >at the grammar because it's more terse. Recognizing that we must > serve > >both those communities, please comment with any thoughts on the > following: > > > >* What feature seemed like a good idea, but didn't end up being that > >valuable? You can say even heretical things like: " the single step > >feature in the debugger just didn't seem to be that useful beyond > >learning about parsing" > > > >* Do you use the re-factoring? Keep in mind that v4 will automatically > >handle direct left recursion. > > > >* What features do you think are really critical to add? > > > >* What features could be really great if we improved them? > > > >* Do we need better export facilities? would you really use things > like > >"export grammar as hyperlinked HTML", for example. > > > >* What parts of the debugger did you use? There is a lot of stuff in > >there like: breakpoints on input tokens, step forward, step backward, > >jump to the end, break on specific kinds of events, break at specific > >line in the grammar, show the parse tree, show the AST constructed, > list > >to the incoming events, etc... Should we rethink the entire notion of > >the debugger at something that simply displays information about what > it > >sees during the parse? I.e., doesn't need to be a controller in the > >sense that you can single step the actual running parser over the > usual > >socket connection? > > > >You might include whether you are in the newbie or experienced camp or > >somewhere in between. > > > >Udo Borkowski has already implemented a fantastic tree layout > algorithm > >from an academic paper. The performance is extremely good and the > results > >are tight. Colin will probably implement his own syntax diagram > viewer > >so that we can make it more than just a pretty picture. We want to > >highlight elements and step through etc. > > > >Thanks! > >Ter > > > >List: http://www.antlr.org/mailman/listinfo/antlr-interest > >Unsubscribe: > >http://www.antlr.org/mailman/options/antlr-interest/your-email-address > > > > List: http://www.antlr.org/mailman/listinfo/antlr-interest > Unsubscribe: http://www.antlr.org/mailman/options/antlr-interest/your- > email-address List: http://www.antlr.org/mailman/listinfo/antlr-interest Unsubscribe: http://www.antlr.org/mailman/options/antlr-interest/your-email-address -- You received this message because you are subscribed to the Google Groups "il-antlr-interest" group. To post to this group, send email to il-antlr-inter...@googlegroups.com. To unsubscribe from this group, send email to il-antlr-interest+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/il-antlr-interest?hl=en.