I was able to fix the 'and' 'or' 'not' issue by turning their definitions into functions, instead of just strings, not sure why that fixed it :/
On Oct 7, 7:54 pm, Alex_Gaynor <[EMAIL PROTECTED]> wrote: > I was able to succesfully implement True and False by making them > tokens(I do want them to be reserved ala py3k), so thanks for the help > with that! I am also looking over the things on indentation, although > I suspect that will be something that goes in later. Right now I am > having some issue implementing 'and' 'or' and 'not'. Right now I have > them implemented the same way I do other unary and binary operators > which I suspect isn't working. Right now whenever I try True or > False, or not True, or True and False I get a syntax error, and I'm > not sure what causes this. All my code is > here:http://github.com/alex/alex-s-language/tree/master > > On Oct 7, 6:59 pm, Bruce Frederiksen <[EMAIL PROTECTED]> wrote: > > > If you make True/False tokens, that generally means that they are > > reserved words in your language. That means that nobody can use them > > for other purposes. > > > If you want to let people use the words "True" and "False" for other > > purposes, then you probably don't want them to be tokens. In this case, > > you will probably end up doing a lookup at runtime, which might find > > some other value. > > > In python 2.5, for example, you can use True and False for other purposes: > > > def False(): print "hi mom!" > > > is OK. But this becomes illegal in python 3.0. > > > I've attached a scanner the does indenting ala python (i.e., the > > programmer can indent any amount so long as they line up). > > > -bruce > > > Alex_Gaynor wrote: > > > I'm looking to implement a boolean type in my language, where exactly > > > should I do this? Should I make True and False both be tokens, and > > > just set t.value = True/False. Or should the parser handle them? > > > > Also, how would I go about implementing a language that uses indent/ > > > dedent for blocks(ala python)? > > > > Alex > > > scanner.py > > 19KViewDownload --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "ply-hack" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/ply-hack?hl=en -~----------~----~----~----~------~----~------~--~---
