[il-antlr-interest: 25157] Re: [antlr-interest] Exceptio n while debugging C# 2.0 with ANTLRWorks1.2.3

[Jim Idle]

Bayle Jonathan wrote: Hi everybody,   I have identified which piece of code returns « False » (and sometimes « True ») and make ANTLRWorks throw a “java.lang.NumberFormatException”. It is the result of 2 semantic predicates embedded in the same rule :   // beginning of rule (…)       | {input.LA(1) == MY_TOKEN}? // (…) First production | {input.LA(1) != MY_TOKEN}? // (…) Second production // (…) end of rule ;  I am used to work with ANTLR 2.7.7, so this syntax may be wrong under ANTLR 3.1.3. Could anybody help me please ?   ON the face of it, it looks like yuo can just remove the predicates and 3.1 will work it out correctly. However you need to post the rule in question or we are just guessing. Another possibility is that you want gated predicates and just need that on the first production: rule   : {input.LA(1) == MY_TOKEN}?=>  ....   | // second rpodcution   ; The only advantage to that though would be to prevent some kind of warning so I can't see that you need that. Yet another possibility is that your predicates are just not correct, so, post the actual rule in error :-) Jim --~--~---------~--~----~------------~-------~--~----~ 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-interest@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 -~----------~----~----~----~------~----~------~--~---

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