330 lines
7.1 KiB
JavaScript
330 lines
7.1 KiB
JavaScript
import { identity, pipe } from './function';
|
|
import { flap as flap_ } from './Functor';
|
|
// -------------------------------------------------------------------------------------
|
|
// model
|
|
// -------------------------------------------------------------------------------------
|
|
/**
|
|
* @since 2.5.0
|
|
*/
|
|
export function fst(ea) {
|
|
return ea[0];
|
|
}
|
|
/**
|
|
* @since 2.5.0
|
|
*/
|
|
export function snd(ea) {
|
|
return ea[1];
|
|
}
|
|
/**
|
|
* @since 2.5.0
|
|
*/
|
|
export var swap = function (ea) { return [snd(ea), fst(ea)]; };
|
|
/**
|
|
* @category instances
|
|
* @since 2.5.0
|
|
*/
|
|
export function getApply(S) {
|
|
return {
|
|
URI: URI,
|
|
_E: undefined,
|
|
map: _map,
|
|
ap: function (fab, fa) { return [fst(fab)(fst(fa)), S.concat(snd(fab), snd(fa))]; }
|
|
};
|
|
}
|
|
var of = function (M) {
|
|
return function (a) {
|
|
return [a, M.empty];
|
|
};
|
|
};
|
|
/**
|
|
* @category instances
|
|
* @since 2.5.0
|
|
*/
|
|
export function getApplicative(M) {
|
|
var A = getApply(M);
|
|
return {
|
|
URI: URI,
|
|
_E: undefined,
|
|
map: _map,
|
|
ap: A.ap,
|
|
of: of(M)
|
|
};
|
|
}
|
|
/**
|
|
* @category instances
|
|
* @since 2.5.0
|
|
*/
|
|
export function getChain(S) {
|
|
var A = getApply(S);
|
|
return {
|
|
URI: URI,
|
|
_E: undefined,
|
|
map: _map,
|
|
ap: A.ap,
|
|
chain: function (ma, f) {
|
|
var _a = f(fst(ma)), b = _a[0], s = _a[1];
|
|
return [b, S.concat(snd(ma), s)];
|
|
}
|
|
};
|
|
}
|
|
/**
|
|
* @category instances
|
|
* @since 2.5.0
|
|
*/
|
|
export function getMonad(M) {
|
|
var C = getChain(M);
|
|
return {
|
|
URI: URI,
|
|
_E: undefined,
|
|
map: _map,
|
|
ap: C.ap,
|
|
chain: C.chain,
|
|
of: of(M)
|
|
};
|
|
}
|
|
/**
|
|
* @category instances
|
|
* @since 2.5.0
|
|
*/
|
|
export function getChainRec(M) {
|
|
var chainRec = function (a, f) {
|
|
var result = f(a);
|
|
var acc = M.empty;
|
|
var s = fst(result);
|
|
while (s._tag === 'Left') {
|
|
acc = M.concat(acc, snd(result));
|
|
result = f(s.left);
|
|
s = fst(result);
|
|
}
|
|
return [s.right, M.concat(acc, snd(result))];
|
|
};
|
|
var C = getChain(M);
|
|
return {
|
|
URI: URI,
|
|
_E: undefined,
|
|
map: _map,
|
|
ap: C.ap,
|
|
chain: C.chain,
|
|
chainRec: chainRec
|
|
};
|
|
}
|
|
/* istanbul ignore next */
|
|
var _compose = function (bc, ab) { return pipe(bc, compose(ab)); };
|
|
/* istanbul ignore next */
|
|
var _map = function (fa, f) { return pipe(fa, mapFst(f)); };
|
|
/* istanbul ignore next */
|
|
var _bimap = function (fa, f, g) { return pipe(fa, bimap(f, g)); };
|
|
/* istanbul ignore next */
|
|
var _mapLeft = function (fa, f) { return pipe(fa, mapSnd(f)); };
|
|
/* istanbul ignore next */
|
|
var _extend = function (wa, f) { return pipe(wa, extend(f)); };
|
|
/* istanbul ignore next */
|
|
var _reduce = function (fa, b, f) { return pipe(fa, reduce(b, f)); };
|
|
/* istanbul ignore next */
|
|
var _foldMap = function (M) {
|
|
var foldMapM = foldMap(M);
|
|
return function (fa, f) { return pipe(fa, foldMapM(f)); };
|
|
};
|
|
/* istanbul ignore next */
|
|
var _reduceRight = function (fa, b, f) { return pipe(fa, reduceRight(b, f)); };
|
|
/* istanbul ignore next */
|
|
var _traverse = function (F) {
|
|
var traverseF = traverse(F);
|
|
return function (ta, f) { return pipe(ta, traverseF(f)); };
|
|
};
|
|
/**
|
|
* Map a pair of functions over the two type arguments of the bifunctor.
|
|
*
|
|
* @category mapping
|
|
* @since 2.5.0
|
|
*/
|
|
export var bimap = function (f, g) { return function (fa) { return [g(fst(fa)), f(snd(fa))]; }; };
|
|
/**
|
|
* Map a function over the first component of a `ReadonlyTuple`.
|
|
*
|
|
* This is the `map` operation of the `Functor` instance.
|
|
*
|
|
* @category mapping
|
|
* @since 2.10.0
|
|
*/
|
|
export var mapFst = function (f) { return function (fa) {
|
|
return [f(fst(fa)), snd(fa)];
|
|
}; };
|
|
/**
|
|
* Map a function over the second component of a `ReadonlyTuple`.
|
|
*
|
|
* This is the `mapLeft` operation of the `Bifunctor` instance.
|
|
*
|
|
* @category mapping
|
|
* @since 2.10.0
|
|
*/
|
|
export var mapSnd = function (f) { return function (fa) {
|
|
return [fst(fa), f(snd(fa))];
|
|
}; };
|
|
/**
|
|
* @since 2.5.0
|
|
*/
|
|
export var compose = function (ab) { return function (bc) {
|
|
return [fst(bc), snd(ab)];
|
|
}; };
|
|
/**
|
|
* @since 2.5.0
|
|
*/
|
|
export var extend = function (f) { return function (wa) {
|
|
return [f(wa), snd(wa)];
|
|
}; };
|
|
/**
|
|
* @category Extract
|
|
* @since 2.6.2
|
|
*/
|
|
export var extract = fst;
|
|
/**
|
|
* @since 2.5.0
|
|
*/
|
|
export var duplicate = /*#__PURE__*/ extend(identity);
|
|
/**
|
|
* @category folding
|
|
* @since 2.5.0
|
|
*/
|
|
export var reduce = function (b, f) { return function (fa) {
|
|
return f(b, fst(fa));
|
|
}; };
|
|
/**
|
|
* @category folding
|
|
* @since 2.5.0
|
|
*/
|
|
export var foldMap = function () {
|
|
return function (f) { return function (fa) { return f(fst(fa)); }; };
|
|
};
|
|
/**
|
|
* @category folding
|
|
* @since 2.5.0
|
|
*/
|
|
export var reduceRight = function (b, f) { return function (fa) {
|
|
return f(fst(fa), b);
|
|
}; };
|
|
/**
|
|
* @category traversing
|
|
* @since 2.6.3
|
|
*/
|
|
export var traverse = function (F) {
|
|
return function (f) { return function (ta) { return F.map(f(fst(ta)), function (b) { return [b, snd(ta)]; }); }; };
|
|
};
|
|
/**
|
|
* @category traversing
|
|
* @since 2.6.3
|
|
*/
|
|
export var sequence = function (F) {
|
|
return function (fas) {
|
|
return F.map(fst(fas), function (a) { return [a, snd(fas)]; });
|
|
};
|
|
};
|
|
/**
|
|
* @category type lambdas
|
|
* @since 2.5.0
|
|
*/
|
|
export var URI = 'ReadonlyTuple';
|
|
/**
|
|
* @category instances
|
|
* @since 2.7.0
|
|
*/
|
|
export var Functor = {
|
|
URI: URI,
|
|
map: _map
|
|
};
|
|
/**
|
|
* @category mapping
|
|
* @since 2.10.0
|
|
*/
|
|
export var flap = /*#__PURE__*/ flap_(Functor);
|
|
/**
|
|
* Alias of [`mapFst`](#mapfst).
|
|
*
|
|
* @category mapping
|
|
* @since 2.5.0
|
|
*/
|
|
export var map = mapFst;
|
|
/**
|
|
* Alias of [`mapSnd`](#mapsnd).
|
|
*
|
|
* @category error handling
|
|
* @since 2.5.0
|
|
*/
|
|
export var mapLeft = mapSnd;
|
|
/**
|
|
* @category instances
|
|
* @since 2.7.0
|
|
*/
|
|
export var Bifunctor = {
|
|
URI: URI,
|
|
bimap: _bimap,
|
|
mapLeft: _mapLeft
|
|
};
|
|
/**
|
|
* @category instances
|
|
* @since 2.7.0
|
|
*/
|
|
export var Semigroupoid = {
|
|
URI: URI,
|
|
compose: _compose
|
|
};
|
|
/**
|
|
* @category instances
|
|
* @since 2.7.0
|
|
*/
|
|
export var Comonad = {
|
|
URI: URI,
|
|
map: _map,
|
|
extend: _extend,
|
|
extract: extract
|
|
};
|
|
/**
|
|
* @category instances
|
|
* @since 2.7.0
|
|
*/
|
|
export var Foldable = {
|
|
URI: URI,
|
|
reduce: _reduce,
|
|
foldMap: _foldMap,
|
|
reduceRight: _reduceRight
|
|
};
|
|
/**
|
|
* @category instances
|
|
* @since 2.7.0
|
|
*/
|
|
export var Traversable = {
|
|
URI: URI,
|
|
map: _map,
|
|
reduce: _reduce,
|
|
foldMap: _foldMap,
|
|
reduceRight: _reduceRight,
|
|
traverse: _traverse,
|
|
sequence: sequence
|
|
};
|
|
// -------------------------------------------------------------------------------------
|
|
// deprecated
|
|
// -------------------------------------------------------------------------------------
|
|
/**
|
|
* This instance is deprecated, use small, specific instances instead.
|
|
* For example if a function needs a `Functor` instance, pass `RT.Functor` instead of `RT.readonlyTuple`
|
|
* (where `RT` is from `import RT from 'fp-ts/ReadonlyTuple'`)
|
|
*
|
|
* @category zone of death
|
|
* @since 2.5.0
|
|
* @deprecated
|
|
*/
|
|
export var readonlyTuple = {
|
|
URI: URI,
|
|
compose: _compose,
|
|
map: _map,
|
|
bimap: _bimap,
|
|
mapLeft: _mapLeft,
|
|
extract: extract,
|
|
extend: _extend,
|
|
reduce: _reduce,
|
|
foldMap: _foldMap,
|
|
reduceRight: _reduceRight,
|
|
traverse: _traverse,
|
|
sequence: sequence
|
|
};
|