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make IsQty interface

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rhiannon morris 2021-09-09 23:51:45 +02:00
parent b47ef502f3
commit b29b7855a2
1 changed files with 25 additions and 12 deletions
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37
src/Quox/Syntax/Qty.idr
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@ -35,20 +35,33 @@ prettyQtyBinds =
public export public export
(+) : Qty -> Qty -> Qty plus : Qty -> Qty -> Qty
Zero + rh = rh plus Zero rh = rh
pi + Zero = pi plus pi Zero = pi
_ + _ = Any plus _ _ = Any
public export public export
(*) : Qty -> Qty -> Qty times : Qty -> Qty -> Qty
Zero * _ = Zero times Zero _ = Zero
_ * Zero = Zero times _ Zero = Zero
One * rh = rh times One rh = rh
pi * One = pi times pi One = pi
Any * Any = Any times Any Any = Any
infix 6 <=. infix 6 <=.
public export public export
(<=.) : Qty -> Qty -> Bool compat : Qty -> Qty -> Bool
pi <=. rh = rh == Any || pi == rh compat pi rh = rh == Any || pi == rh
public export
interface IsQty q where
zero, one : q
(+), (*) : q -> q -> q
(<=.) : q -> q -> Bool
public export
IsQty Qty where
zero = Zero; one = One
(+) = plus; (*) = times
(<=.) = compat