Merge branch 'master' into sockets-develop

src/prolog/lib/clpz.pl

@@ -7424,6 +7424,10 @@ intervals_to_drep([A0-B0|Rest], Drep0, Drep) :-
         ),
         intervals_to_drep(Rest, Drep0 \/ D1, Drep).
 
+attribute_goals(X) -->
+        { get_atts(X, queue(_,_)) },
+        !,
+        { put_atts(X, -queue(_,_)) }.
 attribute_goals(X) -->
         % { get_attr(X, clpz, Attr), format("A: ~w\n", [Attr]) },
         { get_attr(X, clpz, clpz_attr(_,_,_,Dom,fd_props(Gs,Bs,Os),_)),

src/prolog/machine/compile.rs

@@ -1143,7 +1143,8 @@ impl ListingCompiler {
         result
     }
 
-    pub(crate) fn gather_items(
+    pub(crate)
+    fn gather_items(
         &mut self,
         wam: &mut Machine,
         src: &mut ParsingStream<Stream>,

src/prolog/machine/mod.rs

@@ -454,15 +454,6 @@ impl Machine {
                             )
         );
 
-        compile_user_module(&mut wam,
-                            Stream::from(ORDSETS),
-                            true,
-                            ListingSource::from_file_and_path(
-                                clause_name!("si"),
-                                lib_path.clone(),
-                            )
-        );
-
         if wam.compile_top_level().is_err() {
             panic!("Loading '$toplevel' module failed");
         }

src/prolog/toplevel.pl

@@ -3,7 +3,6 @@
 
 :- use_module(library(charsio)).
 :- use_module(library(lists)).
-:- use_module(library(ordsets)).
 :- use_module(library(si)).
 
 :- dynamic(argv/1).
@@ -231,10 +230,13 @@ trailing_period_is_ambiguous(Value) :-
 write_eqs_and_read_input(B, VarList) :-
     term_variables(VarList, Vars0),
     '$term_attributed_variables'(VarList, AttrVars),
-    append(Vars0, AttrVars, Vars),
+    copy_term(AttrVars, AttrVars, AttrGoals),
+    term_variables(AttrGoals, AttrGoalVars),
+    append([Vars0, AttrVars, AttrGoalVars], Vars),
     charsio:extend_var_list(Vars, VarList, NewVarList, fabricated),
     '$get_b_value'(B0),
-    gather_goals(NewVarList, NewVarList, VarList, Goals),
+    gather_query_vars(VarList, OrigVars),
+    gather_equations(NewVarList, OrigVars, Goals, AttrGoals),
     (   bb_get('$first_answer', true) ->
         write('   '),
         bb_put('$first_answer', false)
@@ -285,44 +287,50 @@ help_message :-
 
 gather_query_vars([_ = Var | Vars], QueryVars) :-
     (  var(Var) ->
-       QueryVars = [Var | QueryVars1],
-       gather_query_vars(Vars, QueryVars1)
+       QueryVars = [Var | QueryVars0],
+       gather_query_vars(Vars, QueryVars0)
     ;  gather_query_vars(Vars, QueryVars)
     ).
 gather_query_vars([], []).
 
 is_a_different_variable([_ = Binding | Pairs], Value) :-
     (  Value == Binding, !
-    ;  is_a_different_variable(Pairs, Value)
+    ;  is_a_different_variable(Pairs, Var)
     ).
 
-filter_goals([Goal|Goals], FGoals, QueryVars) :-
-    term_variables(Goal, GoalVars0),
-    sort(GoalVars0, GoalVars),
-    (  ord_intersect(GoalVars, QueryVars) ->
-       append(GoalVars, QueryVars, QueryVars0),
-       sort(QueryVars0, QueryVars1),
-       FGoals = [Goal | FGoals0],
-       filter_goals(Goals, FGoals0, QueryVars1)
-    ;
-       filter_goals(Goals, FGoals, QueryVars)
-    ).
-filter_goals([], [], _).
+eq_member(X, [Y|_])  :- X == Y, !.
+eq_member(X, [_|Ys]) :- eq_member(X, Ys).
 
-gather_goals([], VarList, QueryVarList, Goals) :-
-    gather_query_vars(VarList, Vars),
-    term_variables(QueryVarList, QueryVars),
-    copy_term(Vars, Vars, Goals0),
-    filter_goals(Goals0, Goals, QueryVars).
-gather_goals([Var = Value | Pairs], VarList, QueryVarList, Goals) :-
-    (  (  nonvar(Value)
-       ;  is_a_different_variable(Pairs, Value)
+gather_equations([], _, Goals, Goals).
+gather_equations([Var = Value | Pairs], OrigVarList, Goals, Goals1) :-
+    (  var(Value) ->
+       eq_member(Value, OrigVarList),
+       (  (  Pairs == [], NewPairs = []
+          ;  ( select((OtherVar = OtherValue), Pairs, NewPairs),
+               Value == OtherValue, Var \== OtherVar
+             )
           )  ->
              Goals = [Var = Value | Goals0],
-       gather_goals(Pairs, VarList, QueryVarList, Goals0)
-    ;  gather_goals(Pairs, VarList, QueryVarList, Goals)
+             gather_equations(NewPairs, OrigVarList, Goals0, Goals1)
+       ;  gather_equations(Pairs, OrigVarList, Goals, Goals1)
+       )
+    ;  Goals = [Var = Value | Goals0],
+       gather_equations(Pairs, OrigVarList, Goals0, Goals1)
     ).
 
+/*
+gather_equations([], MasterList, Goals, Goals).
+gather_equations([Var = Value | Pairs], MasterList, Goals, Goals1) :-
+    (  (  nonvar(Value)
+       ;  select((Var = _), MasterList, MasterPairs),
+          is_a_different_variable(MasterPairs, Value)
+       ) ->
+       Goals = [Var = Value | Goals0],
+       gather_equations(Pairs, MasterList, Goals0, Goals1)
+    ;  gather_equations(Pairs, MasterList, Goals, Goals1)
+    ).
+*/
+
 print_exception(E) :-
     (  E == error('$interrupt_thrown', repl) -> nl % print the
     % exception on a