rishi/scryer-prolog
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remove dead code

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This commit is contained in:
Mark Thom
2017-05-10 10:47:05 -06:00
parent 91b9aed33a
commit 9afa37a94b
1 changed files with 11 additions and 22 deletions
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33
src/prolog/codegen.rs
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@@ -22,27 +22,17 @@ pub enum EvalSession<'a> {
SubsequentQuerySuccess,
}
impl<'a> EvalSession<'a> {
#[allow(dead_code)]
pub fn failed_query(&self) -> bool {
if let &EvalSession::QueryFailure = self {
true
} else {
false
}
}
}
impl<'a, TermMarker: Allocator<'a>> CodeGenerator<'a, TermMarker> {
impl<'a, TermMarker: Allocator<'a>> CodeGenerator<'a, TermMarker>
{
pub fn new() -> Self {
CodeGenerator { marker: Allocator::new(),
CodeGenerator { marker: Allocator::new(),
var_count: HashMap::new() }
}
pub fn take_vars(self) -> AllocVarDict<'a> {
self.marker.take_bindings()
}
fn update_var_count<Iter>(&mut self, iter: Iter)
where Iter : Iterator<Item=TermRef<'a>>
{
@@ -258,11 +248,10 @@ impl<'a, TermMarker: Allocator<'a>> CodeGenerator<'a, TermMarker> {
match toc {
&TermOrCut::Term(Term::Clause(_, ref name, _))
| &TermOrCut::Term(Term::Constant(_, Constant::Atom(ref name))) => {
if let &mut Line::Control(ref mut ctrl) = body.last_mut().unwrap() {
*ctrl = ControlInstruction::Execute(name.clone(), last_arity);
}
},
| &TermOrCut::Term(Term::Constant(_, Constant::Atom(ref name))) =>
if let &mut Line::Control(ref mut ctrl) = body.last_mut().unwrap() {
*ctrl = ControlInstruction::Execute(name.clone(), last_arity);
},
_ => dealloc_index = body.len()
};
@@ -514,9 +503,9 @@ impl<'a, TermMarker: Allocator<'a>> CodeGenerator<'a, TermMarker> {
_ => {}
};
}
Self::compile_cleanup(&mut code, query.len() - 1, query.last().unwrap());
Self::compile_cleanup(&mut code, query.len() - 1, query.last().unwrap());
code
}