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|
(**************************************************************************)
(* Sail *)
(* *)
(* Copyright (c) 2013-2017 *)
(* Kathyrn Gray *)
(* Shaked Flur *)
(* Stephen Kell *)
(* Gabriel Kerneis *)
(* Robert Norton-Wright *)
(* Christopher Pulte *)
(* Peter Sewell *)
(* Alasdair Armstrong *)
(* Brian Campbell *)
(* Thomas Bauereiss *)
(* Anthony Fox *)
(* Jon French *)
(* Dominic Mulligan *)
(* Stephen Kell *)
(* Mark Wassell *)
(* *)
(* All rights reserved. *)
(* *)
(* This software was developed by the University of Cambridge Computer *)
(* Laboratory as part of the Rigorous Engineering of Mainstream Systems *)
(* (REMS) project, funded by EPSRC grant EP/K008528/1. *)
(* *)
(* Redistribution and use in source and binary forms, with or without *)
(* modification, are permitted provided that the following conditions *)
(* are met: *)
(* 1. Redistributions of source code must retain the above copyright *)
(* notice, this list of conditions and the following disclaimer. *)
(* 2. Redistributions in binary form must reproduce the above copyright *)
(* notice, this list of conditions and the following disclaimer in *)
(* the documentation and/or other materials provided with the *)
(* distribution. *)
(* *)
(* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' *)
(* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED *)
(* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A *)
(* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR *)
(* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, *)
(* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT *)
(* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF *)
(* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND *)
(* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, *)
(* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT *)
(* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF *)
(* SUCH DAMAGE. *)
(**************************************************************************)
open Sail
open Ast
open Ast_util
open Interpreter
open Pretty_print_sail2
type mode =
| Evaluation of frame
| Normal
let current_mode = ref Normal
let prompt () =
match !current_mode with
| Normal -> "sail> "
| Evaluation _ -> "eval> "
let mode_clear () =
match !current_mode with
| Normal -> ()
| Evaluation _ -> LNoise.clear_screen ()
let rec user_input callback =
match LNoise.linenoise (prompt ()) with
| None -> ()
| Some v ->
mode_clear ();
callback v;
user_input callback
let termcode n = "\x1B[" ^ string_of_int n ^ "m"
let bold str = termcode 1 ^ str
let red str = termcode 91 ^ str
let clear str = str ^ termcode 0
let sail_logo =
let banner str = str |> bold |> red |> clear in
[ " ___ ___ ___ ___ ";
" /\\ \\ /\\ \\ /\\ \\ /\\__\\";
" /::\\ \\ /::\\ \\ _\\:\\ \\ /:/ /";
" /\\:\\:\\__\\ /::\\:\\__\\ /\\/::\\__\\ /:/__/ ";
" \\:\\:\\/__/ \\/\\::/ / \\::/\\/__/ \\:\\ \\ ";
" \\::/ / /:/ / \\:\\__\\ \\:\\__\\";
" \\/__/ \\/__/ \\/__/ \\/__/";
""
]
|> List.map banner
let vs_ids = ref (Initial_check.val_spec_ids !interactive_ast)
let handle_input input =
match !current_mode with
| Normal ->
begin
LNoise.history_add input |> ignore;
if input <> "" && input.[0] = ':' then
let n = try String.index input ' ' with Not_found -> String.length input in
let cmd = Str.string_before input n in
let arg = String.trim (Str.string_after input n) in
match cmd with
| ":t" | ":type" ->
let typq, typ = Type_check.Env.get_val_spec (mk_id arg) !interactive_env in
pretty_sail stdout (doc_binding (typq, typ));
print_newline ();
| ":q" | ":quit" ->
exit 0
| ":i" | ":infer" ->
let exp = Initial_check.exp_of_string dec_ord arg in
let exp = Type_check.infer_exp !interactive_env exp in
pretty_sail stdout (doc_typ (Type_check.typ_of exp));
print_newline ()
| ":v" | ":verbose" ->
Type_check.opt_tc_debug := (!Type_check.opt_tc_debug + 1) mod 2
| _ -> print_endline ("Unrecognised command " ^ input)
else if input <> "" then
let exp = Type_check.infer_exp !interactive_env (Initial_check.exp_of_string Ast_util.dec_ord input) in
current_mode := Evaluation (eval_frame !interactive_ast (Step ("", initial_state !interactive_ast, return exp, [])))
else ()
end
| Evaluation frame ->
begin
match frame with
| Done (_, v) ->
print_endline ("Result = " ^ Value.string_of_value v);
current_mode := Normal
| Step (out, _, _, stack) ->
let sep = "-----------------------------------------------------" |> Util.blue |> Util.clear in
List.map stack_string stack |> List.rev |> List.iter (fun code -> print_endline code; print_endline sep);
print_endline out;
current_mode := Evaluation (eval_frame !interactive_ast frame)
end
let () =
List.iter print_endline sail_logo;
(* Auto complete function names based on val specs *)
LNoise.set_completion_callback
begin
fun line_so_far ln_completions ->
let line_so_far, last_id =
try
let p = Str.search_backward (Str.regexp "[^a-zA-Z0-9_]") line_so_far (String.length line_so_far - 1) in
Str.string_before line_so_far (p + 1), Str.string_after line_so_far (p + 1)
with
| Not_found -> "", line_so_far
| Invalid_argument _ -> line_so_far, ""
in
if last_id <> "" then
IdSet.elements !vs_ids
|> List.map string_of_id
|> List.filter (fun id -> Str.string_match (Str.regexp_string last_id) id 0)
|> List.map (fun completion -> line_so_far ^ completion)
|> List.iter (LNoise.add_completion ln_completions)
else ()
end;
LNoise.history_load ~filename:"sail_history" |> ignore;
LNoise.history_set ~max_length:100 |> ignore;
if !opt_interactive then
user_input handle_input
else ()
|
