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|
(* Js_of_ocaml tests
* http://www.ocsigen.org/js_of_ocaml/
* Copyright (C) 2022 Hugo Heuzard
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, with linking exception;
* either version 2.1 of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*)
(* see https://github.com/ocaml/ocaml/pull/12046 *)
external flush_stdout_stderr : unit -> unit = "flush_stdout_stderr"
let parse s =
flush_stdout_stderr ();
try
let lexbuf = Lexing.from_string s in
while true do
let result = Calc_parser.main Calc_lexer.token lexbuf in
flush_stdout_stderr ();
print_int result;
print_newline ()
done
with Calc_lexer.Eof ->
flush_stdout_stderr ();
print_endline "EOF"
let%expect_test "parsing" =
let (old : bool) = Parsing.set_trace true in
parse "1+2*3";
[%expect
{|
State 0: shift to state 1
State 1: read token INT(1)
State 1: shift to state 3
State 3: reduce by rule 2
State 7: read token PLUS
State 7: shift to state 10
State 10: read token INT(2)
State 10: shift to state 3
State 3: reduce by rule 2
State 16: read token TIMES
State 16: shift to state 12
State 12: read token INT(3)
State 12: shift to state 3
State 3: reduce by rule 2
State 18: reduce by rule 6
EOF |}];
parse "(1+2)*3";
[%expect
{|
State 0: shift to state 1
State 1: read token LPAREN
State 1: shift to state 5
State 5: read token INT(1)
State 5: shift to state 3
State 3: reduce by rule 2
State 9: read token PLUS
State 9: shift to state 10
State 10: read token INT(2)
State 10: shift to state 3
State 3: reduce by rule 2
State 16: read token RPAREN
State 16: reduce by rule 4
State 9: shift to state 15
State 15: reduce by rule 3
State 7: read token TIMES
State 7: shift to state 12
State 12: read token INT(3)
State 12: shift to state 3
State 3: reduce by rule 2
State 18: reduce by rule 6
EOF |}];
parse "-10-1";
[%expect
{|
State 0: shift to state 1
State 1: read token MINUS
State 1: shift to state 4
State 4: read token INT(10)
State 4: shift to state 3
State 3: reduce by rule 2
State 8: reduce by rule 8
State 7: read token MINUS
State 7: shift to state 11
State 11: read token INT(1)
State 11: shift to state 3
State 3: reduce by rule 2
EOF |}];
parse "63/2*-3";
[%expect
{|
State 0: shift to state 1
State 1: read token INT(63)
State 1: shift to state 3
State 3: reduce by rule 2
State 7: read token DIV
State 7: shift to state 13
State 13: read token INT(2)
State 13: shift to state 3
State 3: reduce by rule 2
State 19: reduce by rule 7
State 7: read token TIMES
State 7: shift to state 12
State 12: read token MINUS
State 12: shift to state 4
State 4: read token INT(3)
State 4: shift to state 3
State 3: reduce by rule 2
State 8: reduce by rule 8
State 18: reduce by rule 6
EOF |}];
let (_ : bool) = Parsing.set_trace old in
parse "1+2*3";
[%expect {| EOF |}];
parse "(1+2)*3";
[%expect {| EOF |}];
parse "-10-1";
[%expect {| EOF |}];
parse "63/2*-3";
[%expect {| EOF |}]
|
