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forked from GitHub/gf-core

Moved transfer libraries to transfer/lib

This commit is contained in:
bringert
2005-11-30 16:00:06 +00:00
parent 47ad17e78d
commit 5ffef88edc
7 changed files with 40 additions and 9 deletions

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@@ -1,9 +0,0 @@
import nat
data Array : Type -> Nat -> Type where
Empty : (A:Type) -> Array A Zero
Cell : (A:Type) -> (n:Nat) -> A -> Array A n -> Array A (Succ n)
mapA : (A:Type) -> (B:Type) -> (n:Nat) -> (A -> B) -> Array A n -> Array B n
mapA A B _ f (Empty _) = Empty B
mapA A B (Succ n) f (Cell _ _ x xs) = Cell B n (f x) (mapA A B n f xs)

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@@ -1,10 +0,0 @@
data Bool : Type where
True : Bool
False : Bool;
depif : (A:Type) -> (B:Type) -> (b:Bool) -> A -> B -> if Type b then A else B
depif _ _ True x _ = x
depif _ _ False _ y = y
not : Bool -> Bool
not b = if b then False else True

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@@ -1,17 +0,0 @@
import nat
data List : (_:Type) -> Type where
Nil : (A:Type) -> List A
Cons : (A:Type) -> A -> List A -> List A
size : (A:Type) -> List A -> Nat
size _ (Nil _) = Zero
size A (Cons _ x xs) = Succ (size A xs)
map : (A:Type) -> (B:Type) -> (A -> B) -> List A -> List B
map _ B _ (Nil _) = Nil B
map A B f (Cons _ x xs) = Cons B (f x) (map A B f xs)
append : (A:Type) -> (xs:List A) -> List A -> List A
append _ (Nil _) ys = ys
append A (Cons _ x xs) ys = Cons A x (append A xs ys)

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@@ -1,11 +0,0 @@
data Maybe : Type -> Type where
Nothing : (A : Type) -> Maybe A
Just : (A : Type) -> A -> Maybe A
fromMaybe : (A : Type) -> A -> Maybe A -> A
fromMaybe _ x Nothing = x
fromMaybe _ _ (Just x) = x
maybe : (A : Type) -> (B : Type) -> B -> (A -> B) -> Maybe A -> A
maybe _ _ x _ Nothing = x
maybe _ _ _ f (Just x) = f x

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@@ -1,18 +0,0 @@
data Nat : Type where
Zero : Nat
Succ : (n:Nat) -> Nat
plus : Nat -> Nat -> Nat
plus Zero y = y
plus (Succ x) y = Succ (plus x y)
pred : Nat -> Nat
pred Zero = Zero
pred (Succ n) = n
natToInt : Nat -> Int
natToInt Zero = 0
natToInt (Succ n) = 1 + natToInt n
intToNat : Int -> Nat
intToNat n = if n == 0 then Zero else Succ (intToNat (n-1))

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@@ -1,11 +0,0 @@
Pair : Type -> Type -> Type
Pair A B = sig { p1 : A; p2 : B }
pair : (A:Type) -> (B:Type) -> A -> B -> Pair A B
pair _ _ x y = rec { p1 = x; p2 = y }
fst : (A:Type) -> (B:Type) -> Pair A B -> A
fst _ _ p = case p of Pair _ _ x _ -> x
snd : (A:Type) -> (B:Type) -> Pair A B -> B
snd _ _ p = case p of Pair _ _ x _ -> x

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@@ -1,217 +0,0 @@
--
-- Prelude for the transfer language.
--
--
-- Basic functions
--
const : (A:Type) -> (B:Type) -> A -> B -> A
const _ _ x _ = x
id : (A:Type) -> A -> A
id _ x = x
--
-- The Add class
--
Add : Type -> Type
Add = sig zero : A
plus : A -> A -> A
zero : (A : Type) -> Add A -> A
zero _ d = d.zero
plus : (A : Type) -> Add A -> A -> A -> A
plus _ d = d.plus
sum : (A:Type) -> Add A -> List A -> A
sum _ d (Nil _) = d.zero
sum A d (Cons _ x xs) = d.plus x (sum A d xs)
-- Operators:
{-
(x + y) => (plus ? ? x y)
-}
-- Instances:
add_Integer : Add Integer
add_Integer = rec zero = 0
plus = prim_add_Int
add_String : Add String
add_String = rec zero = ""
plus = prim_add_Str
--
-- The Prod class
--
Prod : Type -> Type
Prod = sig one : A
times : A -> A -> A
one : (A : Type) -> Prod A -> A
one _ d = d.one
times : (A : Type) -> Prod A -> A -> A -> A
times _ d = d.times
product : (A:Type) -> Prod A -> List A -> A
product _ d (Nil _) = d.one
product A d (Cons _ x xs) = d.times x (product A d xs)
-- Operators:
{-
(x * y) => (times ? ? x y)
-}
-- Instances:
prod_Integer : Add Integer
prod_Integer = rec one = 1
times = prim_mul_Int
--
-- The Eq class
--
Eq : Type -> Type
Eq A = sig eq : A -> A -> Bool
eq : (A : Type) -> Eq A -> A -> A -> Bool
eq _ d = d.eq
neq : (A : Type) -> Eq A -> A -> A -> Bool
neq A d x y = not (eq A d x y)
-- Operators:
{-
(x == y) => (eq ? ? x y)
(x /= y) => (neq ? ? x y)
-}
-- Instances:
eq_Integer : Eq Integer
eq_Integer = rec eq = prim_eq_Int
eq_String : Eq String
eq_String = rec eq = prim_eq_Str
--
-- The Ord class
--
data Ordering : Type where
LT : Ordering
EQ : Ordering
GT : Ordering
Ord : Type -> Type
Ord A = sig eq : A -> A -> Bool
compare : A -> A -> Ordering
compare : (A : Type) -> Ord A -> A -> A -> Ordering
compare _ d = d.compare
ordOp : (Ordering -> Bool) -> (A : Type) -> Ord A -> A -> A -> Bool
ordOp f A d x y = f (compare A d x y)
lt : (A : Type) -> Ord A -> A -> A -> Bool
lt = ordOp (\o -> case o of { LT -> True; _ -> False })
le : (A : Type) -> Ord A -> A -> A -> Bool
le = ordOp (\o -> case o of { GT -> False; _ -> True })
ge : (A : Type) -> Ord A -> A -> A -> Bool
ge = ordOp (\o -> case o of { LT -> False; _ -> True })
gt : (A : Type) -> Ord A -> A -> A -> Bool
gt = ordOp (\o -> case o of { GT -> True; _ -> False })
-- Operators
{-
(x < y) => (lt ? ? x y)
(x <= y) => (le ? ? x y)
(x >= y) => (ge ? ? x y)
(x > y) => (gt ? ? x y)
-}
-- Instances
ord_Integer : Ord Integer
ord_Integer = rec eq = prim_eq_Int
compare = prim_cmp_Int
ord_String : Ord String
ord_String = rec eq = prim_eq_Str
compare = prim_cmp_Str
--
-- The Show class
--
Show : Type -> Type
Show A = sig show : A -> String
show : (A : Type) -> Show A -> A -> String
show _ d = d.show
-- Instances
show_Integer : Show Integer
show_Integer = rec show = prim_show_Int
show_String : Show String
show_String = rec show = prim_show_Str
--
-- The Monoid class
--
Monoid : Type -> Type
Monoid = sig mzero : A
mplus : A -> A -> A
--
-- The Compos class
--
Compos : Type -> Type
Compos T = sig
C : Type
composOp : (c : C) -> ((a : C) -> T a -> T a) -> T c -> T c
composFold : (B : Type) -> Monoid B -> (c : C) -> ((a : C) -> T a -> b) -> T c -> b
composOp : (T : Type) -> (d : Compos T)
-> (c : d.C) -> ((a : d.C) -> T a -> T a) -> T c -> T c
composOp _ d = d.composOp
composFold : (T : Type) -> (d : Compos T) -> (B : Type) -> Monoid B
-> (c : d.C) -> ((a : d.C) -> T a -> b) -> T c -> b
composFold _ _ d = d.composFold