Clojurians Log v2

can instaparse be used to parse significant-whitespace-indentation-things, in the python sense?

not really, primarily because of how the "levels" work in said indentation-heavy languages

@aengelberg can you change your username to ængelberg

thanks

done

okay well that's disappointing because I'm parsing such a thing and I guess I'll have to do it tediously by hand have you seen any general tools that can handle it?

if you could somehow pre-tokenize all of the indentation before passing it to instaparse, that might work

what I mean is that you'd have to convert

def f(x):
  if x == 1:
    return 2;
  else:
    return 3;

def f(x):
→if x == 1:
→return 2;
←else:
→return 3;
←←

if that makes sense

and the arrows act like brackets?

basically

because instaparse can't keep state of how far to the right you should be at any given point

based on higher-level indentations

I think the combination of writing that code and having to write a grammar is probably more tedious than parsing it manually

perhaps

oh also you could maybe get sneaky with nested parsing

where, say, the top level parser gives you back

[:def "f(x)"
 [:nested-block
  "if x == 1:"
  "  return 2;"
  "else:"
  "  return 3;"]]

and then you have some code that then takes said nested blocks and re-runs the parser on it

and so on

oh interesting

if you're not trampolining your parser, why bother getting up in the morning?

you would have to re-append those nested block lines (with newlines in between)

sure

the grammar would look like

S = def | if | ...
def = <'def '> thing-you're-deffing <':\n'> nested-block
nested-block = (' ' #".*\n?")*