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# Code is based on https://forum.nim-lang.org/t/1305
# and https://forum.nim-lang.org/t/338
import macros, hashes

type
  # Use a distinct string type so we won't recurse forever
  estring = distinct string

# Use a "strange" name
proc gkkaekgaEE(s: estring, key: int): string {.noinline.} =
  # We need {.noinline.} here because otherwise C compiler
  # aggresively inlines this procedure for EACH string which results
  # in more assembly instructions
  var k = key
  result = string(s)
  for i in 0 ..< result.len:
    for f in [0, 8, 16, 24]:
      result[i] = chr(uint8(result[i]) xor uint8((k shr f) and 0xFF))
    k = k +% 1

var encodedCounter {.compileTime.} = hash(CompileTime & CompileDate) and 0x7FFFFFFF

# Use a term-rewriting macro to change all string literals
macro encrypt*{s}(s: string{lit}): untyped =
  var encodedStr = gkkaekgaEE(estring($s), encodedCounter)
  result = quote do:
    gkkaekgaEE(estring(`encodedStr`), `encodedCounter`)
  encodedCounter = (encodedCounter *% 16777619) and 0x7FFFFFFF

echo "asgajklsgasjkg"
echo "dhg3p-]2y=026yit02KEWGOY,Gasgajklsgasjkg"
echo "asgajklsgasjkgas'asgklasgklasg"
echo "asgajklsgasjkg4KYH4I023=Y=34JK20Y0=23GYJKJMDGHSFHG"
echo "asgajklsgasjkg34Y2YI=32T0Y23=Y0G"
echo "asgajklsgasjkg34Y2YI=32T0Y23=Y0G"
echo "asgajklsgasjkg34Y2YI=32T0Y23=Y0G"
echo "asgajklsgasjkg34Y2YI=32T0Y23=Y0G"
echo "asgajklsgasjkg34Y2YI=32T0Y23=Y0G"
echo "asgajklsgasjkg34Y2YI=32T0Y23=Y0G"
echo "asgajklsgasjkg34Y2YI=32T0Y23=Y0G"
echo "asgajklsgasjkg34Y2YI=32T0Y23=Y0G"
echo "asgajklsgasjkg34Y2YI=32T0Y23=Y0G"
echo "asgajklsgasjkg34Y2YI=32T0Y23=Y0G"
echo "asgajklsgasjkg34Y2YI=32T0Y23=Y0G"
echo "asgajklsgasjkg34Y2YI=32T0Y23=Y0G"
echo "asgajklsgasjkg34Y2YI=32T0Y23=Y0G"
echo "asgajklsgasjkg34Y2YI=32T0Y23=Y0G"
echo "asgajklsgasjkg34Y2YI=32T0Y23=Y0G"
echo "asgajklsgasjkg34Y2YI=32T0Y23=Y0G"
echo "asgajklsgasjkg34Y2YI=32T0Y23=Y0G"
echo "asgajklsgasjkg34Y2YI=32T0Y23=Y0G"
echo "asgajklsgasjkg34Y2YI=32T0Y23=Y0G"
echo "asgajklsgasjkg34Y2YI=32T0Y23=Y0G"
echo "asgajklsgasjkg34Y2YI=32T0Y23=Y0G"
echo "asgajklsgasjkg34Y2YI=32T0Y23=Y0G"
echo "asgajklsgasjkg34Y2YI=32T0Y23=Y0G"
echo "asgajklsgasjkg34Y2YI=32T0Y23=Y0G"
echo "asgajklsgasjkg34Y2YI=32T0Y23=Y0G"
echo "asgajklsgasjkg34Y2YI=32T0Y23=Y0G"
echo "asgajklsgasjkg34Y2YI=32T0Y23=Y0G"
echo "asgajklsgasjkg34Y2YI=32T0Y23=Y0G"
echo "asgajklsgasjkg34Y2YI=32T0Y23=Y0G"
echo "asgajklsgasjkg34Y2YI=32T0Y23=Y0G"
echo "asgajklsgasjkg34Y2YI=32T0Y23=Y0G"