Macro swipl_macros::term

term!() { /* proc-macro */ }

Generate a term from a rust expression.

This macro takes two arguments, a context to generate the term in, and a rust expression representing the prolog term to generate..

The macro returns a PrologResult<Term> containing new term, created through context.new_term_ref(), which contains a prolog term corresponding to the description. The term! macro cannot actually fail with a PrologFailure, but it is possible for a resource limit exception to be triggered by one of the underlying calls into prolog.

Examples

Generate a nested functor term:

let term = term!{context: foo(bar(baz, quux))}?;

Embed a value in the term:

let num = 42;
let term = term!{context: foo(#42)}?;

Embed a term in the term:

let inner = context.new_term_ref();
let term = term!{context: foo(#&inner)}?;