rishi/scryer-prolog
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add call_with_inference_limit

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This commit is contained in:
Mark Thom
2018-02-19 22:34:56 -07:00
parent 8b566ab4e5
commit 7313472a70
12 changed files with 541 additions and 171 deletions
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12
src/prolog/iterators.rs
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@@ -36,6 +36,12 @@ impl<'a> QueryIterator<'a> {
let state = TermIterState::Clause(1, ClauseType::CallN, terms);
QueryIterator { state_stack: vec![state] }
},
&QueryTerm::CallWithInferenceLimit(ref terms) => {
let ct = ClauseType::CallWithInferenceLimit;
let state = TermIterState::Clause(0, ct, terms);
QueryIterator { state_stack: vec![state] }
},
&QueryTerm::Catch(ref terms) => {
let state = TermIterState::Clause(0, ClauseType::Catch, terms);
QueryIterator { state_stack: vec![state] }
@@ -333,7 +339,8 @@ impl<'a> ChunkedIterator<'a>
arity = child_terms.len() + 1;
break;
},
&QueryTerm::Catch(ref child_terms) | &QueryTerm::Throw(ref child_terms) => {
&QueryTerm::Catch(ref child_terms)
| &QueryTerm::Throw(ref child_terms) => {
result.push(term);
arity = child_terms.len();
break;
@@ -344,7 +351,8 @@ impl<'a> ChunkedIterator<'a>
break;
},
&QueryTerm::Arg(_)
| &QueryTerm::Functor(_) => {
| &QueryTerm::Functor(_)
| &QueryTerm::CallWithInferenceLimit(_) => {
result.push(term);
arity = 3;
break;