1/*  Part of SWI-Prolog
    2
    3    WWW:           http://www.swi-prolog.org
    4    Copyright (c)  2020, SWI-Prolog Solutions b.v.
    5    All rights reserved.
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    7    Redistribution and use in source and binary forms, with or without
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    9    are met:
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   11    1. Redistributions of source code must retain the above copyright
   12       notice, this list of conditions and the following disclaimer.
   13
   14    2. Redistributions in binary form must reproduce the above copyright
   15       notice, this list of conditions and the following disclaimer in
   16       the documentation and/or other materials provided with the
   17       distribution.
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   19    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   20    "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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   22    FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
   23    COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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   31*/
   32
   33:- module(sicstus4_terms,
   34	  [ term_variables_set/2,	% @Term, -Variables
   35	    subsumeschk/2,		% +Generic, @Specific
   36	    term_order/3		% @X, @Y, -R
   37	  ]).   38:- reexport('../sicstus/terms').   39:- reexport('../../occurs',
   40	    [ contains_term/2,
   41	      free_of_term/2,
   42	      occurrences_of_term/3,
   43	      contains_var/2,
   44	      free_of_var/2,
   45	      occurrences_of_var/3,
   46	      sub_term/2
   47	    ]).   48
   49:- multifile sicstus4:rename_module/2.   50
   51sicstus4:rename_module(terms, sicstus4_terms).
   52
   53/** <module> SICStus 4-compatible library(terms).
   54
   55@tbd	This library is incomplete.
   56	As of SICStus 4.6.0, the following predicates are missing:
   57
   58	* term_hash/3
   59	* depth_bound/2
   60	* length_bound/2
   61	* size_bound/2
   62	* term_depth/2
   63
   64@see	https://sicstus.sics.se/sicstus/docs/4.6.0/html/sicstus.html/lib_002dterms.html
   65*/
   66
   67%%	term_variables_set(@Term, -Variables) is det.
   68%
   69%	Same as term_variables_bag/2, but Variables is an ordered set.
   70
   71term_variables_set(Term, Variables) :-
   72	term_variables(Term, VariablesBag),
   73	sort(VariablesBag, Variables).
   74
   75%%	subsumeschk(+Generic, @Specific) is semidet.
   76%
   77%	SICStus 4 name of subsumes_chk/2.
   78%
   79%	@deprecated Replace by subsumes_term/2.
   80
   81subsumeschk(Generic, Specific) :- subsumes_chk(Generic, Specific).
   82
   83%%	term_order(@X, @Y, -R) is det.
   84%
   85%	Same as compare/3, except for the order of arguments.
   86%
   87%	@deprecated Use the standard compare/3 instead.
   88
   89term_order(X, Y, R) :- compare(R, X, Y)