.. index:: single: json_patch_protocol
.. _json_patch_protocol/0:

.. rst-class:: right

**protocol**

``json_patch_protocol``
=======================

JSON Patch (RFC 6902) application protocol.

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

| **Author:** Paulo Moura
| **Version:** 1:0:0
| **Date:** 2026-07-03

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


| **Dependencies:**
|   (none)


| **Remarks:**
|    (none)

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

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

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

.. index:: apply/3
.. _json_patch_protocol/0::apply/3:

``apply/3``
^^^^^^^^^^^

Applies a JSON Patch document represented as a list of operation objects to a JSON term and returns the patched JSON term.

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

| **Template:**
|    ``apply(Patch,OldJSON,NewJSON)``
| **Mode and number of proofs:**
|    ``apply(++list,++term,--term)`` - ``zero_or_one_or_error``

| **Exceptions:**
|    ``Patch`` is a variable:
|        ``instantiation_error``
|    ``OldJSON`` is a variable:
|        ``instantiation_error``
|    ``Patch`` is neither a variable nor a list:
|        ``type_error(list,Patch)``
|    An operation in ``Patch`` is malformed:
|        ``domain_error(json_patch_operation,Operation)``


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

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

(none)

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

(none)

Operators
---------

(none)