If you generate code automatically, then just flooding a little exptressions
with parentheses may be the easiest way (parenthesize all subexpressions, not
statements). Yet add semicolons after statements in expressions. E.g. your code
works in the following version:
proc strsubsmart(s: string, start: int, fl0wlen: int): string =
if start >= 0 and fl0wlen > 0:
substring(s, start, fl0wlen)
else:
var slen: int =
strlen(s)
var trueStart: int = (
if start >= 0: (
start
) else: (
var ss: int =
slen+start;
if ss >= 0: (
ss
) else:
0
)
)
var trueLength: int =
if fl0wlen > 0:
fl0wlen
else:
slen+fl0wlen-trueStart
substring(s, trueStart, trueLength)
