import re
import itertools

def ltrim(s: str, target = " ") -> str:
    return ''.join(list(itertools.dropwhile(lambda x: x == target, s)))

def param_to_pt(param: str) -> (str, str):
    pr = re.search("\w*$", param).span()
    n = param[pr[0]:pr[1]].strip()
    t = param[:pr[0]].strip()
    return (n, t)

def fn_name(fn: str) -> str:
    return re.search("\w*\(", fn).group()[:-1]

def fn_out(fn: str) -> str:
    return fn[:re.search("\w*\(", fn).span()[0]].rstrip()

def params(fn: str) -> [str]:
    param_list = re.search("\(.*\)", fn).group()[:-1][1:].split(',')
    return list(map(param_to_pt, param_list))

def build_param_list(plist: (str, str)) -> str:
    out = ""
    comma = ""
    for p in plist:
        out += comma + p[0] + ": " + p[1]
        comma = ", "
    return out

def build_fn(fn: str) -> str:
    name = fn_name(fn)
    out = fn_out(fn)
    ps = build_param_list(params(fn))
    return "export @symbol(\"%s\") fn %s(%s) %s;" % (name, name, ps, out)

file = "process.txt"
with open(file) as file:
    for item in file:
          print(build_fn(item))