Yes, because they are wrong. Here is an issue: https://pharo.fogbugz.com/f/cases/14254/AST-method-replaceWith-does-not-change-source-interval
2014-10-28 13:32 GMT+02:00 Thierry Goubier <thierry.goub...@gmail.com>: > Le 28/10/2014 12:12, Mark Rizun a écrit : > >> Well, not really. >> >> Technically, tokens are used to drive a parser from a scanner. >> >> If an AST node knows how to relate itself to its original source >> code chunk and is able to print itself correctly, then tokens are >> redundant. >> >> In short, if you work with parsers, you'd better know what tokens >> are. If you're only working with the AST, tokens are redundant and >> noise (i.e. they often have a type (or more than one) which is only >> understood by the parser). >> >> >> I'm working with ASTs sourceInterval. Trying to calculate it after >> method replaceWith:. >> You see, my proble was that each node of AST doesn't hold its start and >> stop position in same place. So I thought that token is such a place, >> however, eventually I understood that RBValueNodes don't have tokens:) >> > > Do you mean you're trying to do a replace and update the positions of all > the nodes ? > > Thierry > >
