rishi/scryer-prolog
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add compare predicate.

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This commit is contained in:
Mark Thom
2018-02-21 23:21:18 -07:00
parent 5de03444eb
commit 9aac3cb086
10 changed files with 146 additions and 7 deletions
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6
src/prolog/iterators.rs
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@@ -78,6 +78,10 @@ impl<'a> QueryIterator<'a> {
let state = TermIterState::Clause(0, ClauseType::CompareNumber(qt), terms);
QueryIterator { state_stack: vec![state] }
},
&QueryTerm::Compare(ref terms) => {
let state = TermIterState::Clause(0, ClauseType::Compare, terms);
QueryIterator { state_stack: vec![state] }
},
&QueryTerm::CompareTerm(qt, ref terms) => {
let state = TermIterState::Clause(0, ClauseType::CompareTerm(qt), terms);
QueryIterator { state_stack: vec![state] }
@@ -329,7 +333,7 @@ impl<'a> ChunkedIterator<'a>
break;
}
},
&QueryTerm::SetupCallCleanup(_) => {
&QueryTerm::SetupCallCleanup(_) | &QueryTerm::Compare(_) => {
result.push(term);
arity = 3;
break;