import GolangLean.Eval

namespace GolangLean

/-! # REPL — placeholder.

Go has no official REPL, but `gore` and `yaegi` show it is feasible: each
input is wrapped into a fresh `func main()` body or evaluated as a statement
sequence inside a persistent package-scope. We follow the latter approach. -/

partial def runREPL : IO Unit := do
  IO.println "golang-lean v0.1 — interpreter scaffold (REPL not yet implemented)"
  IO.println "Type Ctrl-D to exit."
  let stdin ← IO.getStdin
  let rec loop : IO Unit := do
    IO.print "go> "
    (← IO.getStdout).flush
    let line ← stdin.getLine
    if line.isEmpty then return ()
    IO.println s!"  parsed: {line.trimAscii} (stub)"
    loop
  loop

end GolangLean