1/* Part of SWI-Prolog 2 3 Author: Jan Wielemaker 4 E-mail: J.Wielemaker@vu.nl 5 WWW: http://www.swi-prolog.org 6 Copyright (c) 2019, VU University Amsterdam 7 All rights reserved. 8 9 Redistribution and use in source and binary forms, with or without 10 modification, are permitted provided that the following conditions 11 are met: 12 13 1. Redistributions of source code must retain the above copyright 14 notice, this list of conditions and the following disclaimer. 15 16 2. Redistributions in binary form must reproduce the above copyright 17 notice, this list of conditions and the following disclaimer in 18 the documentation and/or other materials provided with the 19 distribution. 20 21 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 22 "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 23 LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 24 FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 25 COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 26 INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 27 BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 28 LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 29 CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 31 ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 32 POSSIBILITY OF SUCH DAMAGE. 33*/ 34 35:- module(error_handler, 36 [ check_acyclic/3, % ?Term,+Predicate,+Arg 37 check_atom/3, % ?Term,+Predicate,+Arg 38 check_callable/3, % ?Term,+Predicate,+Arg 39 check_integer/3, % ?Term,+Predicate,+Arg 40 check_nonvar/3, % ?Term,+Predicate,+Arg 41 check_nonvar_list/3, % ?Term,+Predicate,+Arg 42% check_one_thread/3, % +Operation,+Object_Type,+Predicate 43 check_stream/3, % ?Term,+Predicate,+Arg 44 check_var/3, % ?Term,+Predicate,+Arg 45 check_ground/3, % ?Term,+Predicate,+Arg 46 47 domain_error/4, % +Valid_type,-Culprit,+Predicate,+Arg 48 49 print_backtrace/1, % +Backtrace 50 51 xsb_error_get_tag/2, % +ErrorTerm, -Formal 52 xsb_error_get_message/2 % +ErrorTerm, -Message 53 ]). 54:- use_module(library(error)). 55:- use_module(library(prolog_stack)).
60check_acyclic(Term, _Pred, _Arg) :- must_be(acyclic, Term). 61check_atom(Term, _Pred, _Arg) :- must_be(atom, Term). 62check_callable(Term, _Pred, _Arg) :- must_be(callable, Term). 63check_integer(Term, _Pred, _Arg) :- must_be(integer, Term). 64check_nonvar(Term, _Pred, _Arg) :- must_be(nonvar, Term). 65check_nonvar_list(Term, _Pred, _Arg) :- must_be(list(nonvar), Term). 66check_stream(Term, _Pred, _Arg) :- must_be(stream, Term). 67check_var(Term, _Pred, _Arg) :- must_be(var, Term). 68check_ground(Term, _Pred, _Arg) :- must_be(ground, Term).
error(Formal,Context)
term.
74xsb_error_get_tag(error(Tag, _), Tag).
80xsb_error_get_message(error(_, Context), Message) :- 81 error_context_message(Context, Message). 82 83error_context_message(Var, Var) :- 84 var(Var), 85 !. 86error_context_message(context(Message, _Stack), Message).
92domain_error(Type, Culprit, _Pred, _Arg) :-
93 domain_error(Type, Culprit).
100print_backtrace(Backtrace) :- 101 print_prolog_backtrace(user_error, Backtrace). 102 103 104 /******************************* 105 * MESSAGES * 106 *******************************/ 107 108:- multifile prolog:message//1. 109 110prologmessage(aborted(Text)) --> 111 [ '(abort) ~w'-[Text] ]
XSB compatible error handling
*/