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Complete the relocation of contrib HVect into base as All (#3191)

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* complete the relocation of contrib HVect into base as All

* Frex needs these public exported and that feels reasonable enough to me

* Add CHANGELOG_NEXT entries
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Mathew Polzin 2024-03-19 08:22:32 -05:00 committed by GitHub
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7 changed files with 123 additions and 177 deletions
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14
CHANGELOG_NEXT.md
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@ -85,6 +85,16 @@ This CHANGELOG describes the merged but unreleased changes. Please see [CHANGELO
* Added append `(++)` for `List` version of `All`.
* Moved helpers and theorems from contrib's `Data.HVect` into base's
`Data.Vect.Quantifiers.All` namespace. Some functions were renamed and some
already existed. Others had quantity changes -- in short, there were some
breaking changes here in addition to removing the respective functions from
contrib. If you hit a breaking change, please take a look at
[the PR](https://github.com/idris-lang/Idris2/pull/3191/files) and determine if you
simply need to update a function name or if your use-case requires additional
code changes in the base library. If it's the latter, open a bug ticket or
start a discussion on the Idris Discord to determine the best path forward.
* Deprecate `bufferData` in favor of `bufferData'`. These functions are the same
with the exception of the latter dealing in `Bits8` which is more correct than
`Int`.
@ -103,6 +113,10 @@ This CHANGELOG describes the merged but unreleased changes. Please see [CHANGELO
* Existing `System.Console.GetOpt` was extended to support errors during options
parsing in a backward-compatible way.
* Moved helpers from `Data.HVect` to base library's `Data.Vect.Quantifiers.All`
and removed `Data.HVect` from contrib. See the additional notes in the
CHANGELOG under the `Library changes`/`Base` section above.
#### Network
* Add a missing function parameter (the flag) in the C implementation of idrnet_recv_bytes

108
libs/base/Data/Vect/Quantifiers.idr
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@ -2,6 +2,9 @@ module Data.Vect.Quantifiers
import Data.DPair
import Data.Vect
import Data.Vect.Elem
import Decidable.Equality
%default total
@ -205,6 +208,10 @@ namespace All
traversePropertyRelevant f [] = pure []
traversePropertyRelevant f (x :: xs) = [| f _ x :: traversePropertyRelevant f xs |]
export
consInjective : {0 xs, ys: All p ts} -> {0 x, y: p a} -> (x :: xs = y :: ys) -> (x = y, xs = ys)
consInjective Refl = (Refl, Refl)
public export
tabulate : {n : _} ->
{0 xs : Vect n _} ->
@ -227,6 +234,18 @@ namespace All
show' acc @{[_]} [px] = acc ++ show px
show' acc @{_ :: _} (px :: pxs) = show' (acc ++ show px ++ ", ") pxs
export
All (DecEq . p) xs => DecEq (All p xs) where
decEq [] [] = Yes Refl
decEq @{deq :: deqs} (x :: xs) (y :: ys) with (decEq x y)
decEq @{deq :: deqs} (x :: xs) (y :: ys) | (Yes prf) with (decEq xs ys)
decEq @{deq :: deqs} (x :: xs) (y :: ys) | (Yes prf) | (Yes prf') =
Yes (rewrite prf in rewrite prf' in Refl)
decEq @{deq :: deqs} (x :: xs) (y :: ys) | (Yes prf) | (No contra) =
No (contra . snd . consInjective)
decEq @{deq :: deqs} (x :: xs) (y :: ys) | (No contra) =
No (contra . fst . consInjective)
export
All (Eq . p) xs => Eq (All p xs) where
(==) [] [] = True
@ -265,12 +284,12 @@ namespace All
HVect = All id
||| Take the first element.
export
public export
head : All p (x :: xs) -> p x
head (y :: _) = y
||| Take all but the first element.
export
public export
tail : All p (x :: xs) -> All p xs
tail (_ :: ys) = ys
@ -288,3 +307,88 @@ namespace All
drop' 0 ys = rewrite minusZeroRight k in ys
drop' (S k) [] = []
drop' (S k) (y :: ys) = drop' k ys
||| Extract an element from an All.
|||
||| ```idris example
||| > index 0 (the (HVect _) [1, "string"])
||| 1
||| ```
export
index : (i : Fin k) -> All p ts -> p (index i ts)
index FZ (x :: xs) = x
index (FS j) (x :: xs) = index j xs
||| Delete an element from an All at the given position.
|||
||| ```idris example
||| > deleteAt 0 (the (HVect _) [1, "string"])
||| ["string"]
||| ```
export
deleteAt : (i : Fin (S l)) -> All p ts -> All p (deleteAt i ts)
deleteAt FZ (x :: xs) = xs
deleteAt (FS FZ) (x :: (y :: xs)) = x :: xs
deleteAt (FS (FS j)) (x :: (y :: xs)) = x :: deleteAt (FS j) (y :: xs)
||| Replace an element in an All at the given position.
|||
||| ```idris example
||| > replaceAt 0 "firstString" (the (HVect _) [1, "string"])
||| ["firstString", "string"]
||| ```
export
replaceAt : (i : Fin k) ->
(x : p t) ->
All p ts ->
All p (replaceAt i t ts)
replaceAt FZ y (x :: xs) = y :: xs
replaceAt (FS j) y (x :: xs) = x :: replaceAt j y xs
||| Update an element in an All at the given position.
|||
||| ```idris example
||| > updateAt 0 (const True) (the (HVect _) [1, "string"])
||| [True, "string"]
||| ```
export
updateAt : (i : Fin k) ->
(p (index i ts) -> p t) ->
All p ts ->
All p (replaceAt i t ts)
updateAt FZ f (x :: xs) = f x :: xs
updateAt (FS j) f (x :: xs) = x :: updateAt j f xs
||| Extract an element of an All.
|||
||| ```idris example
||| > get [1, "string"] {p = Here}
||| 1
||| ```
export
get : All p ts -> Elem x ts -> p x
get (x :: xs) Here = x
get (x :: xs) (There e') = get xs e'
||| Replace an element of an All.
|||
||| ```idris example
||| > replaceElem 2 [1, "string"]
||| [2, "string"]
||| ```
export
replaceElem : All p ts -> (e : Elem t ts) -> p t' -> All p (replaceByElem ts e t')
replaceElem (x :: xs) Here y = y :: xs
replaceElem (x :: xs) (There p') y = x :: replaceElem xs p' y
||| Update an element of an All.
|||
||| ```idris example
||| > updateElem (const "hello world!") [1, "string"]
||| [1, "hello world!"]
||| ```
public export
updateElem : {0 p : _} -> (p t -> p t') -> All p ts -> (e : Elem t ts) -> All p (replaceByElem ts e t')
updateElem f (x :: xs) Here = f x :: xs
updateElem f (x :: xs) (There p') = x :: updateElem f xs p'

2
libs/contrib/Data/Fun/Extra.idr
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@ -2,7 +2,7 @@ module Data.Fun.Extra
import Data.Fun
import Data.Rel
import Data.HVect
import Data.Vect.Quantifiers
%default total

170
libs/contrib/Data/HVect.idr
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@ -1,170 +0,0 @@
module Data.HVect
import Decidable.Equality
import Data.List
import public Data.Vect
import Data.Vect.Elem
%default total
||| Heterogeneous vectors where the type index gives, element-wise,
||| the types of the contents.
public export
data HVect : Vect k Type -> Type where
Nil : HVect []
(::) : t -> HVect ts -> HVect (t :: ts)
||| Extract an element from an HVect.
|||
||| ```idris example
||| > index 0 (the (HVect _) [1, "string"])
||| 1
||| ```
public export
index : (i : Fin k) -> HVect ts -> index i ts
index FZ (x :: xs) = x
index (FS j) (x :: xs) = index j xs
||| Delete an element from an HVect.
|||
||| ```idris example
||| > deleteAt 0 (the (HVect _) [1, "string"])
||| ["string"]
||| ```
public export
deleteAt : (i : Fin (S l)) -> HVect ts -> HVect (deleteAt i ts)
deleteAt FZ (x :: xs) = xs
deleteAt (FS FZ) (x :: (y :: xs)) = x :: xs
deleteAt (FS (FS j)) (x :: (y :: xs)) = x :: deleteAt (FS j) (y :: xs)
||| Replace an element in an HVect.
|||
||| ```idris example
||| > replaceAt 0 "firstString" (the (HVect _) [1, "string"])
||| ["firstString", "string"]
||| ```
public export
replaceAt : (i : Fin k) -> t -> HVect ts -> HVect (replaceAt i t ts)
replaceAt FZ y (x :: xs) = y :: xs
replaceAt (FS j) y (x :: xs) = x :: replaceAt j y xs
||| Update an element in an HVect.
|||
||| ```idris example
||| > updateAt 0 (const True) (the (HVect _) [1, "string"])
||| [True, "string"]
||| ```
public export
updateAt : (i : Fin k) -> (index i ts -> t) -> HVect ts -> HVect (replaceAt i t ts)
updateAt FZ f (x :: xs) = f x :: xs
updateAt (FS j) f (x :: xs) = x :: updateAt j f xs
||| Append two `HVect`s.
|||
||| ```idris example
||| > (the (HVect _) [1]) ++ (the (HVect _) ["string"])
||| [1, "string"]
||| ```
public export
(++) : HVect ts -> HVect us -> HVect (ts ++ us)
(++) [] ys = ys
(++) (x :: xs) ys = x :: (xs ++ ys)
public export
Eq (HVect []) where
[] == [] = True
public export
(Eq t, Eq (HVect ts)) => Eq (HVect (t :: ts)) where
(x :: xs) == (y :: ys) = x == y && xs == ys
public export
consInjective1 : {0 xs, ys: HVect ts} -> {0 x, y: a} -> (x :: xs = y :: ys) -> x = y
consInjective1 Refl = Refl
public export
consInjective2 : {0 xs, ys: HVect ts} -> {0 x, y: a} -> (x :: xs = y :: ys) -> xs = ys
consInjective2 Refl = Refl
public export
DecEq (HVect []) where
decEq [] [] = Yes Refl
public export
(DecEq t, DecEq (HVect ts)) => DecEq (HVect (t :: ts)) where
decEq (x :: xs) (y :: ys) with (decEq x y)
decEq (z :: xs) (z :: ys) | Yes Refl with (decEq xs ys)
decEq (z :: zs) (z :: zs) | Yes Refl | Yes Refl = Yes Refl
decEq (z :: xs) (z :: ys) | Yes Refl | No contra = No (contra . consInjective2)
decEq (x :: xs) (y :: ys) | No contra = No (contra . consInjective1)
public export
interface Shows k ts where
shows : HVect {k} ts -> Vect k String
public export
Shows Z [] where
shows [] = []
public export
(Show t, Shows len ts) => Shows (S len) (t :: ts) where
shows (x :: xs) = show x :: shows xs
public export
(Shows len ts) => Show (HVect ts) where
show xs = "[" ++ (pack . intercalate [','] . map unpack . toList $ shows xs) ++ "]"
||| Extract an arbitrary element of the correct type.
|||
||| ```idris example
||| > get [1, "string"] {p = Here}
||| 1
||| ```
public export
get : (1 _ : HVect ts) -> {auto 1 p : Elem t ts} -> t
get (x :: xs) {p = Here} = x
get (x :: xs) {p = (There p')} = get xs
||| Replace an element with the correct type. (Homogeneous)
|||
||| ```idris example
||| > put 2 [1, "string"]
||| [2, "string"]
||| ```
public export
put : t -> (1 _ : HVect ts) -> {auto 1 p : Elem t ts} -> HVect ts
put y (x :: xs) {p = Here} = y :: xs
put y (x :: xs) {p = (There p')} = x :: put y xs
||| Replace an element with the correct type. (Heterogeneous)
|||
||| ```idris example
||| > htPut True [1, "string"] {p = Here}
||| [True, "string"]
||| ```
public export
htPut : u -> (1 _ : HVect ts) -> {auto 1 p : Elem t ts} -> HVect (replaceByElem ts p u)
htPut y (x :: xs) {p = Here} = y :: xs
htPut y (x :: xs) {p = There p'} = x :: htPut y xs
||| Update an element with the correct type. (Homogeneous)
|||
||| ```idris example
||| > update (const "hello world!") [1, "string"]
||| [1, "hello world!"]
||| ```
public export
update : (t -> t) -> (1 _ : HVect ts) -> {auto 1 p : Elem t ts} -> HVect ts
update f (x :: xs) {p = Here} = f x :: xs
update f (x :: xs) {p = There p'} = x :: update f xs
||| Update an element with the correct type. (Heterogeneous)
|||
||| ```idris example
||| > htUpdate (\_ : String => 2) [1, "string"]
||| [1, 2]
||| ```
public export
htUpdate : (t -> u) -> (1 _ : HVect ts) -> {auto 1 p : Elem t ts} -> HVect (replaceByElem ts p u)
htUpdate f (x :: xs) {p = Here} = f x :: xs
htUpdate f (x :: xs) {p = (There p')} = x :: htUpdate f xs

2
libs/contrib/Data/Rel/Complement.idr
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@ -3,7 +3,7 @@ module Data.Rel.Complement
import Data.Rel
import Data.Fun
import Data.Fun.Extra
import Data.HVect
import Data.Vect.Quantifiers
%default total

2
libs/contrib/Decidable/Decidable/Extra.idr
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@ -4,7 +4,7 @@ import Data.Rel
import Data.Rel.Complement
import Data.Fun
import Data.Vect
import Data.HVect
import Data.Vect.Quantifiers
import Data.Fun.Extra
import Decidable.Decidable

2
libs/contrib/contrib.ipkg
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@ -113,8 +113,6 @@ modules = Control.ANSI,
Data.Void,
Data.HVect,
Debug.Buffer,
Decidable.Finite.Fin,