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fix build error: failed to synthesize instance Lean.ToExpr Comparator #9

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fix build error: failed to synthesize instance Lean.ToExpr Comparator #9

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14 changes: 14 additions & 0 deletions C0deine/Utils/Comparison.lean
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Original file line number Diff line number Diff line change
Expand Up @@ -2,6 +2,7 @@
Basic comparison operators that are used in numerous IRs.
- Thea Brick
-/
import Lean
namespace C0deine

inductive Comparator
Expand All @@ -27,3 +28,16 @@ def toString : Comparator → String
| less_equal => "<="
| greater_equal => ">="
instance : ToString Comparator where toString := Comparator.toString

instance : Lean.ToExpr Comparator :=
{
toExpr := fun c =>
match c with
| Comparator.less => Lean.mkConst ``Comparator.less
| Comparator.equal => Lean.mkConst ``Comparator.equal
| Comparator.greater => Lean.mkConst ``Comparator.greater
| Comparator.not_equal => Lean.mkConst ``Comparator.not_equal
| Comparator.less_equal => Lean.mkConst ``Comparator.less_equal
| Comparator.greater_equal => Lean.mkConst ``Comparator.greater_equal
toTypeExpr := Lean.mkConst ``Comparator
}