.. index:: single: json_lines_protocol
.. _json_lines_protocol/0:

.. rst-class:: right

**protocol**

``json_lines_protocol``
=======================

JSON Lines parser and generator protocol.

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

| **Author:** Paulo Moura
| **Version:** 1:1:0
| **Date:** 2026-07-08

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


| **Dependencies:**
|   (none)


| **Remarks:**
|    (none)

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

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

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

.. index:: parse/2
.. _json_lines_protocol/0::parse/2:

``parse/2``
^^^^^^^^^^^

Parses the JSON Lines contents read from the given source (``file(Path)``, ``stream(Stream)``, ``line(Stream)``, ``codes(Codes)``, ``chars(Chars)``, or ``atom(Atom)``) into a list of ground terms.

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

| **Template:**
|    ``parse(Source,Terms)``
| **Mode and number of proofs:**
|    ``parse(++compound,--list(ground))`` - ``one_or_error``

| **Exceptions:**
|    ``Source`` is a variable:
|        ``instantiation_error``
|    ``Source`` is neither a variable nor a valid source:
|        ``domain_error(json_lines_source,Source)``
|    ``Source`` contents are not valid JSON Lines:
|        ``domain_error(json_lines,Source)``


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

.. index:: generate/2
.. _json_lines_protocol/0::generate/2:

``generate/2``
^^^^^^^^^^^^^^

Generates the content using the representation specified in the first argument (``file(Path)``, ``stream(Stream)``, ``codes(Codes)``, ``chars(Chars)``, or ``atom(Atom)``) for the list of ground terms in the second argument.

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

| **Template:**
|    ``generate(Sink,Terms)``
| **Mode and number of proofs:**
|    ``generate(+compound,++list(ground))`` - ``one_or_error``

| **Exceptions:**
|    ``Sink`` is a variable:
|        ``instantiation_error``
|    ``Terms`` is a variable:
|        ``instantiation_error``
|    ``Terms`` is neither a variable nor a list:
|        ``type_error(list,Terms)``
|    ``Term`` is a non-ground element of the list ``Terms``:
|        ``instantiation_error``
|    ``Term`` is an element of the list ``Terms`` but not a valid JSON term:
|        ``domain_error(json_term,Term)``
|    ``Sink`` cannot be generated:
|        ``domain_error(json_lines_sink,Sink)``


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

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

(none)

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

(none)

Operators
---------

(none)

