Higher-order
Author(s): Daniel Cabeza.
This module is a wrapper for the implementation-defined predicate call/1, and it implements the call/2 predicate.
Usage and interface
- Library usage:
:- use_module(engine(hiord_rt)). - Exports:
- Predicates:
call/1, call/2, SYSCALL/1, $nodebug_call/1, $meta_call/1.
- Predicates:
- Imports:
- Packages:
prelude, nonpure, condcomp, assertions, nortchecks, isomodes.
- Packages:
Documentation on exports
PREDICATE
call(G)
Executes goal G, restricting the scope of the cuts to the execution of G. Equivalent to writing a variable G in a goal position.
(Trust) Usage:ISO
- The following properties should hold at call time:
(basic_props:callable/1)G is a term which represents a goal, i.e., an atom or a structure. - The following properties hold globally:
(basic_props:native/1)This predicate is understood natively by CiaoPP.
PREDICATE
call(Pred,Arg1)
There exists a set of builtin predicates of the form call/N with N > 1 which execute predicate Pred given arguments Arg1 ... ArgX. If Pred has already arguments Arg1 is added to the start, the rest to the end. This predicate, when Pred is a variable, can be written using the special Ciao syntax Pred(Arg1,...,ArgX).
Usage:
- Call and exit should be compatible with:
(basic_props:term/1)Arg1 is any term. - The following properties should hold at call time:
(basic_props:callable/1)Pred is a term which represents a goal, i.e., an atom or a structure. - The following properties should hold upon exit:
(basic_props:term/1)Arg1 is any term. - The following properties should hold globally:
(basic_props:native/1)This predicate is understood natively by CiaoPP.
PREDICATE
(Trust) Usage:
- The following properties should hold at call time:
(basic_props:callable/1)Arg1 is a term which represents a goal, i.e., an atom or a structure.
PREDICATE
(Trust) Usage:
- The following properties should hold at call time:
(basic_props:callable/1)Arg1 is a term which represents a goal, i.e., an atom or a structure.
PREDICATE
(Trust) Usage:$meta_call(A)
- The following properties should hold at call time:
(term_typing:nonvar/1)A is currently a term which is not a free variable.
(basic_props:callable/1)A is a term which represents a goal, i.e., an atom or a structure. - The following properties hold globally:
(basic_props:native/2)This predicate is understood natively by CiaoPP as call(A).
Known bugs and planned improvements
- Run-time checks have been reported not to work with this code. That means that either the assertions here, or the code that implements the run-time checks are erroneous.
