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transition to the operator precedence parser.

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This commit is contained in:
Mark Thom
2017-09-06 00:36:14 -06:00
parent 8ee27af9fd
commit 92de7acd22
15 changed files with 335 additions and 3117 deletions
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3
src/prolog/iterators.rs
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@@ -53,15 +53,12 @@ impl<'a> QueryIterator<'a> {
fn from_term(term: &'a Term) -> Self {
let state = match term {
&Term::AnonVar =>
//IteratorState::AnonVar(Level::Shallow),
return QueryIterator { state_stack: vec![] },
&Term::Clause(_, _, ref terms) =>
IteratorState::Clause(0, ClauseType::Root, terms),
&Term::Cons(_, _, _) =>
//IteratorState::InitialCons(Level::Shallow, cell, head.as_ref(), tail.as_ref()),
return QueryIterator { state_stack: vec![] },
&Term::Constant(_, _) =>
//IteratorState::Constant(Level::Shallow, cell, constant),
return QueryIterator { state_stack: vec![] },
&Term::Var(ref cell, ref var) =>
IteratorState::Var(Level::Shallow, cell, var)