rishi/scryer-prolog
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

add display predicate

Browse Source
This commit is contained in:
Mark Thom
2018-01-14 22:11:02 -07:00
parent 58ba368280
commit 08b94dcdf5
9 changed files with 80 additions and 32 deletions
Download Patch File Download Diff File Expand all files Collapse all files

9
src/prolog/iterators.rs
View File

@@ -40,6 +40,10 @@ impl<'a> QueryIterator<'a> {
let state = TermIterState::Clause(0, ClauseType::Catch, terms);
QueryIterator { state_stack: vec![state] }
},
&QueryTerm::Display(ref terms) => {
let state = TermIterState::Clause(0, ClauseType::Root, terms);
QueryIterator { state_stack: vec![state] }
},
&QueryTerm::Arg(ref terms)
| &QueryTerm::Functor(ref terms) => {
let state = TermIterState::Clause(0, ClauseType::Root, terms);
@@ -277,6 +281,11 @@ impl<'a> ChunkedIterator<'a>
arity = child_terms.len();
break;
},
&QueryTerm::Display(_) => {
result.push(term);
arity = 1;
break;
},
&QueryTerm::Arg(_)
| &QueryTerm::Functor(_) => {
result.push(term);