add (:) meta-predicate argument indicator (#1302)

2022-03-13 12:53:31 -06:00
parent 922abf21e7
commit e88ec6736c
4 changed files with 8 additions and 0 deletions
--- a/src/machine/preprocessor.rs
+++ b/src/machine/preprocessor.rs
@@ -296,6 +296,7 @@ fn setup_meta_predicate<'a, LS: LoadState<'a>>(
                        atom!("+") => MetaSpec::Plus,
                        atom!("-") => MetaSpec::Minus,
                        atom!("?") => MetaSpec::Either,
+                        atom!(":") => MetaSpec::Colon,
                        _ => return Err(CompilationError::InvalidMetaPredicateDecl),
                    };