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compare characters directly in term comparison tests

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This commit is contained in:
Mark Thom
2020-03-05 12:50:11 -07:00
parent 2d3ce32314
commit 9852e30b39
1 changed files with 11 additions and 1 deletions
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10
src/prolog/machine/machine_state_impl.rs
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@@ -2300,6 +2300,14 @@ impl MachineState {
return Ordering::Greater;
}
}
(
HeapCellValue::Addr(Addr::Con(Constant::Char(c1))),
HeapCellValue::Addr(Addr::Con(Constant::Char(c2))),
) => {
if c1 != c2 {
return c1.cmp(&c2);
}
}
(
HeapCellValue::Addr(Addr::Con(Constant::Atom(atom, _))),
HeapCellValue::Addr(Addr::Con(Constant::Char(c))),
@@ -2366,8 +2374,10 @@ impl MachineState {
HeapCellValue::Addr(Addr::AttrVar(hc1)),
HeapCellValue::Addr(Addr::PStrTail(hc2, _)),
) => {
if hc1 != hc2 {
return hc1.cmp(&hc2);
}
}
(HeapCellValue::Addr(Addr::HeapCell(_)), _)
| (HeapCellValue::Addr(Addr::AttrVar(_)), _)
| (HeapCellValue::Addr(Addr::PStrTail(..)), _) => {