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mal/fsharp/step1_read_print.fs
Joel Martin dd7a4f55f3 Test uncaught throw, catchless try* . Fix 46 impls.
Fixes made to: ada, c, chuck, clojure, coffee, common-lisp, cpp,
crystal, d, dart, elm, erlang, es6, factor, fsharp, gnu-smalltalk,
groovy, guile, haxe, hy, js, livescript, matlab, miniMAL, nasm, nim,
objc, objpascal, ocaml, perl, perl6, php, plsql, ps, python, r,
rpython, ruby, scheme, swift3, tcl, ts, vb, vimscript, wasm, yorick.

Catchless try* test is an optional test. Not all implementations
support catchless try* but a number were fixed so they at least don't
crash on catchless try*.
2018-12-12 14:18:26 -06:00

44 lines
965 B
Forth

module REPL
open System
let READ input =
try
Reader.read_str input
with
| Error.ReaderError(msg) ->
printfn "%s" msg
[]
let EVAL ast =
Some(ast)
let PRINT v =
v
|> Seq.singleton
|> Printer.pr_str
|> printfn "%s"
let REP input =
READ input
|> Seq.ofList
|> Seq.map (fun form -> EVAL form)
|> Seq.filter Option.isSome
|> Seq.iter (fun value -> PRINT value.Value)
let getReadlineMode args =
if args |> Array.exists (fun e -> e = "--raw") then
Readline.Mode.Raw
else
Readline.Mode.Terminal
[<EntryPoint>]
let main args =
let mode = getReadlineMode args
let rec loop () =
match Readline.read "user> " mode with
| null -> 0
| input ->
REP input
loop()
loop ()