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% The SWI-Prolog documentation system



\subsection{library(term_to_json)}

\label{sec:termtojson}

\begin{description}
    \predicate[det]{term_to_json}{3}{+Term, +Bindings, -JsonTerm}
\nodescription
    \predicate[det]{term_to_json}{2}{+Term, -JsonTerm}
Convert any general Prolog term into a JSON term. Prolog lists
are treated in a special way. Also, JSON terms are not
converted. Mapping:

\begin{itemize}
    \item Variable: \verb${"type":"var", "name":<string>}$
    \item Atom: \verb${"type":"atom", "value":<string>}$
    \item Integer: \verb${"type":"integer", "value":<integer>}$
    \item Float: \verb${"type":"float", "value":<float>}$
    \item List: JSON array
    \item Dict: a JSON object. Values are processed recursively.
(the tag is ignored)
    \item \verb$json([Key=Value, ...])$: a JSON object Values are processed
recursively.
    \item compound: \verb${"type":"compound", "functor":<string>, "args":<array>}$
\end{itemize}

\begin{arguments}
\arg{Bindings} & is a list of Name=Var terms for variables that
get their name from the environment. \\
\end{arguments}
\end{description}