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mirror of https://github.com/kanaka/mal.git synced 2024-09-21 02:27:10 +03:00
mal/impls/ada.2/step0_repl.adb
Joel Martin 8a19f60386 Move implementations into impls/ dir
- Reorder README to have implementation list after "learning tool"
  bullet.

- This also moves tests/ and libs/ into impls. It would be preferrable
  to have these directories at the top level.  However, this causes
  difficulties with the wasm implementations which need pre-open
  directories and have trouble with paths starting with "../../". So
  in lieu of that, symlink those directories to the top-level.

- Move the run_argv_test.sh script into the tests directory for
  general hygiene.
2020-02-10 23:50:16 -06:00

46 lines
909 B
Ada

with Ada.Text_IO;
with Readline;
procedure Step0_Repl is
function Read return String with Inline;
function Eval (Ast : in String) return String;
procedure Print (Ast : in String) with Inline;
procedure Rep with Inline;
----------------------------------------------------------------------
function Eval (Ast : in String) return String
is (Ast);
procedure Print (Ast : in String) is
begin
Ada.Text_IO.Put_Line (Ast);
end Print;
function Read return String is (Readline.Input ("user> "));
procedure Rep is
begin
Print (Eval (Read));
end Rep;
----------------------------------------------------------------------
begin
loop
begin
Rep;
exception
when Readline.End_Of_File =>
exit;
end;
-- Other exceptions are really unexpected.
end loop;
Ada.Text_IO.New_Line;
end Step0_Repl;