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import macros, std/math
 
macro apply*(f: typed, xs: untyped): untyped =
  echo f.treeRepr
  let funcParams = params(getImpl(f))
 
  var i: int = 0
  var args: seq[NimNode] = @[]
 
  result = newCall(f)
 
  for child in funcParams.children:
    if child.kind == nnkIdentDefs:
      result.add(quote do: `xs`[`i`])
      i += 1
 
proc f(a: int, b: int, c: int) : int =
  a + b + c
 
proc mypow(a: float, b: float): float =
  pow(a, b)
 
when isMainModule:
  echo $apply(f, @[20.int, 5.int, 10.int])
  echo $apply(pow, @[2.float, 32.float])

Sym "f"
ClosedSymChoice
  Sym "pow"
  Sym "pow"
stack trace: (most recent call last)
prog.nim(5)              apply
prog.nim(25, 14) template/generic instantiation from here
prog.nim(5, 34) Error: node is not a symbol

Standard output is empty