.. index:: single: debug_messages
.. _debug_messages/0:

.. rst-class:: right

**object**

``debug_messages``
==================

Supports selective enabling and disabling of ``debug`` and ``debug(Group)`` messages.

| **Availability:** 
|    ``logtalk_load(debug_messages(loader))``

| **Author:** Paulo Moura
| **Version:** 1:0:1
| **Date:** 2022-05-05

| **Compilation flags:**
|    ``static, context_switching_calls``


| **Provides:**
|    :ref:`logtalk::message_hook/4 <logtalk/0::message_hook/4>`
| **Uses:**
|    :ref:`logtalk <logtalk/0>`

| **Remarks:**

   - Limitations: Debug messages are suppressed by the compiler when the ``optimize`` flag is turned on and thus cannot be enabled in this case.

| **Inherited public predicates:**
|    (none)

.. contents::
   :local:
   :backlinks: top

Public predicates
-----------------

.. index:: enable/1
.. _debug_messages/0::enable/1:

``enable/1``
^^^^^^^^^^^^

Enables all ``debug`` and ``debug(Group)`` messages for the given component.

| **Compilation flags:**
|    ``static``

| **Template:**
|    ``enable(Component)``
| **Mode and number of proofs:**
|    ``enable(@term)`` - ``one``


------------

.. index:: disable/1
.. _debug_messages/0::disable/1:

``disable/1``
^^^^^^^^^^^^^

Disables all ``debug`` and ``debug(Group)`` messages for the given component.

| **Compilation flags:**
|    ``static``

| **Template:**
|    ``disable(Component)``
| **Mode and number of proofs:**
|    ``disable(@term)`` - ``one``


------------

.. index:: enabled/1
.. _debug_messages/0::enabled/1:

``enabled/1``
^^^^^^^^^^^^^

Enumerates by backtracking the components with enabled ``debug`` and ``debug(Group)`` messages.

| **Compilation flags:**
|    ``static``

| **Template:**
|    ``enabled(Component)``
| **Mode and number of proofs:**
|    ``enabled(?term)`` - ``zero_or_more``


------------

.. index:: enable/2
.. _debug_messages/0::enable/2:

``enable/2``
^^^^^^^^^^^^

Enables ``debug(Group)`` messages for the given component and group.

| **Compilation flags:**
|    ``static``

| **Template:**
|    ``enable(Component,Group)``
| **Mode and number of proofs:**
|    ``enable(@term,@term)`` - ``one``


------------

.. index:: disable/2
.. _debug_messages/0::disable/2:

``disable/2``
^^^^^^^^^^^^^

Disables ``debug(Group)`` messages for the given component and group.

| **Compilation flags:**
|    ``static``

| **Template:**
|    ``disable(Component,Group)``
| **Mode and number of proofs:**
|    ``disable(@term,@term)`` - ``one``


------------

.. index:: enabled/2
.. _debug_messages/0::enabled/2:

``enabled/2``
^^^^^^^^^^^^^

Enumerates by backtracking the enabled ``debug(Group)`` messages for each component.

| **Compilation flags:**
|    ``static``

| **Template:**
|    ``enabled(Component,Group)``
| **Mode and number of proofs:**
|    ``enabled(?term,?term)`` - ``zero_or_more``


------------

Protected predicates
--------------------

(no local declarations; see entity ancestors if any)

Private predicates
------------------

.. index:: enabled_/1
.. _debug_messages/0::enabled_/1:

``enabled_/1``
^^^^^^^^^^^^^^

Table of components with currently enabled ``debug`` and ``debug(Group)`` messages.

| **Compilation flags:**
|    ``dynamic``

| **Template:**
|    ``enabled_(Component)``
| **Mode and number of proofs:**
|    ``enabled_(?term)`` - ``zero_or_more``


------------

.. index:: enabled_/2
.. _debug_messages/0::enabled_/2:

``enabled_/2``
^^^^^^^^^^^^^^

Table of currently enabled ``debug(Group)`` per component.

| **Compilation flags:**
|    ``dynamic``

| **Template:**
|    ``enabled_(Component,Group)``
| **Mode and number of proofs:**
|    ``enabled_(?term,?term)`` - ``zero_or_more``


------------

Operators
---------

(none)