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import strutils, sequtils, tables, types
proc str_handle(x: string, pr = true): string =
if x.len > 0 and x[0] == '\xff':
result = ":" & x[1 .. x.high]
elif pr: result = "\"" & x.replace("\\", "\\\\").replace("\"", "\\\"") & "\""
else: result = x
proc pr_str*(m: MalType, pr = true): string =
case m.kind
of Nil: result = "nil"
of True: result = "true"
of False: result = "false"
of Fun: result = "#<function>"
of MalFun: result = "#<malfun>"
of Atom: result = "(atom " & m.val.pr_str & ")"
of Symbol: result = m.str
of String: result = m.str.str_handle(pr)
of Number: result = $m.number
of List: result = "(" & m.list.mapIt(string, it.pr_str(pr)).join(" ") & ")"
of Vector: result = "[" & m.list.mapIt(string, it.pr_str(pr)).join(" ") & "]"
of HashMap:
result = "{"
for key, val in m.hash_map.pairs:
if result.len > 1: result.add " "
result.add key.str_handle & " " & val.pr_str(pr)
result.add "}"
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