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Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

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.. rst-class:: align-right

built-in predicate

.. index:: pair: current_protocol/1; Built-in predicate .. _predicates_current_protocol_1:

current_protocol/1

Description

::

current_protocol(Protocol)

Enumerates, by backtracking, all currently defined protocols. All protocols are found, either static, dynamic, or built-in.

Modes and number of proofs

::

current_protocol(?protocol_identifier) - zero_or_more

Errors

| Protocol is neither a variable nor a valid protocol identifier: | type_error(protocol_identifier, Protocol)

Examples

::

% enumerate the defined protocols: | ?- current_protocol(Protocol).

Protocol = expanding ; Protocol = monitoring ; Protocol = forwarding ; ...

.. seealso::

:ref:predicates_abolish_protocol_1, :ref:predicates_create_protocol_3, :ref:predicates_protocol_property_2, :ref:predicates_conforms_to_protocol_2_3, :ref:predicates_extends_protocol_2_3, :ref:predicates_implements_protocol_2_3