Preprocessor adding () in string literals

[xinaesthete]

If you write

F = -> box
s = "F-"

then it will compile to

var F, s;

F = function() {
  return box();
};

s = "F()-";

This lead to some slightly obscure behaviour while I was writing an L-system.

nb I haven't actually reproduced this outside of my own fork, but have no reason to believe any of my modifications are relevant. It doesn't happen on the live version at livecodelab.net, presumably because that's somewhat behind.

[davidedc]

yes, I'm aware of that, gonna fix this tonight.

Processing.js avoids that by building a table of strings ahead of transformation, doing the transformations and then replacing the strings back.

Here is the exact snippet of the replacement: https://github.com/jeresig/processing-js/blob/master/processing.js#L18176 ...and this is where the strings are put back: https://github.com/jeresig/processing-js/blob/master/processing.js#L18128

so I'm gonna do that tonight.

[davidedc]

(doesn't happen on the live version cause the live version doesn't have all the new language features, there are a lot more transformations going on now.)

[xinaesthete]

Yes, I gathered this had something to with the newlang stuff, but I haven't really looked closely at what that is or how far it's made it into the trunk.

[xinaesthete]

Brilliant, thanks for the snappy response.