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Pack logicmoo_base -- prolog/logicmoo/pdt_server/org.cs3.prolog.library_3.1.2.201603251848/pl/utils4modules_visibility.pl
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 hidden_module(M)
 empty_module(?Module)
Generate or test empty modules (which contain no own predicate declaration, let alone any clauses).
 module_of_file(?File, ?Module)
Module is the module defined in File (or 'user' if the file defines no explicit module or the defined module is a hidden system module.
 visible_in_module(?Module, ?Name, ?Arity) is nondet
Suceed if the predicate Name/Arity is visible in Module either via a local declaration or import.
The used predicate_property(Head,visible) is documented as: True when predicate can be called without raising a predicate existence error. This means that the predicate is (1) defined, (2) can be inherited from one of the default modules (see default_module/2) or (3) can be autoloaded. The behaviour is logically consistent iff the propery visible is provided explicitly. If the property is left unbound, only defined predicates are enumerated.
 declared_in_module(?Module, ?Name, ?Arity, ?DeclaringModule) is nondet
Succeed if the predicate Name/Arity visible in Module is declared in DeclaringModule. Module = DeclaringModule holds if Module contains a local (non-imported) declaration. Otherwise, DeclaringModule is the module from which the declaration is imported. Note that predicate suceeds even if there is no defining clause for Name/Arity in DeclaringModule (definition implies declaration but not vice versa).
 declared_in_module(?Module, +Head, ?DeclaringModule) is nondet
Unlike declared_in_module(Module,Name,Arity,DeclaringModule), functor(Head,Name,Arity) this call does not generate, it assumes Head is instantiated!
 defined_in_module(?Module, +Head) is nondet
There is at least one clause for Head that is physically contained in Module (not just visible by import). The clause(es) in the module can come from different files (because of multifile predicates).
 defined_in_module(?Module, ?Name, ?Arity) is nondet
There is at least one clause for Name/Arity that is physically contained in Module (not just visible by import). The clause(es) in the module can come from different files (because of multifile predicates).
 defined_in_module(?ReferencedModule, ?Name, ?Arity, ?DefiningModule) is nondet
The predicate Name/Arity visible in ReferencedModule is defined in DefiningModule. That is, there is at least one clause for Name/Arity that is physically contained in DefiningModule (not just visible by import). The clause(es) in DefiningModule can come from different files (because of multifile predicates).
 referenced_but_undeclared(?Module, ?Name, ?Arity) is nondet
Succeed if the predicate Name/Arity is called in Module but is not visible there.
 defined_in_file(-Module, -Name, -Arity, -N, ?File, ?Line) is nondet
defined_in_file(+Module,+Name,+Arity,+N,?File,?Line) is det

Get the source locations (File and Line) of all clauses that define Module:Name/Arity.

 declared_in_file(?Module, Head, ?File, ?Line) is nondet
File is the file containing the declaration for the predicate Head, which is visible in Module. Line = 1 (approximating the line number information missing for declarations).

Undocumented predicates

The following predicates are exported, but not or incorrectly documented.

 declared_in_module(Arg1, Arg2)
 declared_but_undefined(Arg1, Arg2, Arg3)
 defined_in_files(Arg1, Arg2, Arg3, Arg4)
 defined_in_file(Arg1, Arg2, Arg3, Arg4, Arg5, Arg6, Arg7)