rishi/scryer-prolog
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add term comparison operators.

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This commit is contained in:
Mark Thom
2018-02-13 23:34:44 -07:00
parent a1fb4f529b
commit ae323a0cdf
9 changed files with 341 additions and 21 deletions
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4
src/prolog/codegen.rs
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@@ -257,6 +257,8 @@ impl<'a, TermMarker: Allocator<'a>> CodeGenerator<'a, TermMarker>
},
&QueryTerm::Catch(_) =>
code.push(Line::Control(ControlInstruction::CatchCall)),
&QueryTerm::CompareTerm(qt, _) =>
code.push(Line::Control(ControlInstruction::CompareTermCall(qt))),
&QueryTerm::Display(_) =>
code.push(Line::Control(ControlInstruction::DisplayCall)),
&QueryTerm::DuplicateTerm(_) =>
@@ -303,6 +305,8 @@ impl<'a, TermMarker: Allocator<'a>> CodeGenerator<'a, TermMarker>
*ctrl = ControlInstruction::Execute(name, arity),
ControlInstruction::CallN(arity) =>
*ctrl = ControlInstruction::ExecuteN(arity),
ControlInstruction::CompareTermCall(qt) =>
*ctrl = ControlInstruction::CompareTermExecute(qt),
ControlInstruction::DisplayCall =>
*ctrl = ControlInstruction::DisplayExecute,
ControlInstruction::DuplicateTermCall =>