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 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 token before reducing ? >>>> >>>> >>> 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 but then my grammar will be filled with >> "white-space | nothing" rules and I thought Lemon could reduce when >> there is no other way out of the current stack as it is more elegant. >> I went into the sources and saw this comment: >> >> LA(LR) is the answer - just drop Your's tokens as their arrive and give a chance for the parser to be LALR, not LR or SLR :)
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