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"use strict";
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exports.semigroupProduct = exports.semigroupSum = exports.semigroupString = exports.getFunctionSemigroup = exports.semigroupAny = exports.semigroupAll = exports.getIntercalateSemigroup = exports.getMeetSemigroup = exports.getJoinSemigroup = exports.getDualSemigroup = exports.getStructSemigroup = exports.getTupleSemigroup = exports.getFirstSemigroup = exports.getLastSemigroup = exports.getObjectSemigroup = exports.semigroupVoid = exports.concatAll = exports.last = exports.first = exports.intercalate = exports.tuple = exports.struct = exports.reverse = exports.constant = exports.max = exports.min = void 0;
exports.fold = fold;
/**
* If a type `A` can form a `Semigroup` it has an **associative** binary operation.
*
* ```ts
* interface Semigroup<A> {
* readonly concat: (x: A, y: A) => A
* }
* ```
*
* Associativity means the following equality must hold for any choice of `x`, `y`, and `z`.
*
* ```ts
* concat(x, concat(y, z)) = concat(concat(x, y), z)
* ```
*
* A common example of a semigroup is the type `string` with the operation `+`.
*
* ```ts
* import { Semigroup } from 'fp-ts/Semigroup'
*
* const semigroupString: Semigroup<string> = {
* concat: (x, y) => x + y
* }
*
* const x = 'x'
* const y = 'y'
* const z = 'z'
*
* semigroupString.concat(x, y) // 'xy'
*
* semigroupString.concat(x, semigroupString.concat(y, z)) // 'xyz'
*
* semigroupString.concat(semigroupString.concat(x, y), z) // 'xyz'
* ```
*
* *Adapted from https://typelevel.org/cats*
*
* @since 2.0.0
*/
var function_1 = require("./function");
var _ = __importStar(require("./internal"));
var M = __importStar(require("./Magma"));
var Or = __importStar(require("./Ord"));
// -------------------------------------------------------------------------------------
// constructors
// -------------------------------------------------------------------------------------
/**
* Get a semigroup where `concat` will return the minimum, based on the provided order.
*
* @example
* import * as N from 'fp-ts/number'
* import * as S from 'fp-ts/Semigroup'
*
* const S1 = S.min(N.Ord)
*
* assert.deepStrictEqual(S1.concat(1, 2), 1)
*
* @category constructors
* @since 2.10.0
*/
var min = function (O) { return ({
concat: Or.min(O)
}); };
exports.min = min;
/**
* Get a semigroup where `concat` will return the maximum, based on the provided order.
*
* @example
* import * as N from 'fp-ts/number'
* import * as S from 'fp-ts/Semigroup'
*
* const S1 = S.max(N.Ord)
*
* assert.deepStrictEqual(S1.concat(1, 2), 2)
*
* @category constructors
* @since 2.10.0
*/
var max = function (O) { return ({
concat: Or.max(O)
}); };
exports.max = max;
/**
* @category constructors
* @since 2.10.0
*/
var constant = function (a) { return ({
concat: function () { return a; }
}); };
exports.constant = constant;
// -------------------------------------------------------------------------------------
// combinators
// -------------------------------------------------------------------------------------
/**
* The dual of a `Semigroup`, obtained by swapping the arguments of `concat`.
*
* @example
* import { reverse } from 'fp-ts/Semigroup'
* import * as S from 'fp-ts/string'
*
* assert.deepStrictEqual(reverse(S.Semigroup).concat('a', 'b'), 'ba')
*
* @since 2.10.0
*/
exports.reverse = M.reverse;
/**
* Given a struct of semigroups returns a semigroup for the struct.
*
* @example
* import { struct } from 'fp-ts/Semigroup'
* import * as N from 'fp-ts/number'
*
* interface Point {
* readonly x: number
* readonly y: number
* }
*
* const S = struct<Point>({
* x: N.SemigroupSum,
* y: N.SemigroupSum
* })
*
* assert.deepStrictEqual(S.concat({ x: 1, y: 2 }, { x: 3, y: 4 }), { x: 4, y: 6 })
*
* @since 2.10.0
*/
var struct = function (semigroups) { return ({
concat: function (first, second) {
var r = {};
for (var k in semigroups) {
if (_.has.call(semigroups, k)) {
r[k] = semigroups[k].concat(first[k], second[k]);
}
}
return r;
}
}); };
exports.struct = struct;
/**
* Given a tuple of semigroups returns a semigroup for the tuple.
*
* @example
* import { tuple } from 'fp-ts/Semigroup'
* import * as B from 'fp-ts/boolean'
* import * as N from 'fp-ts/number'
* import * as S from 'fp-ts/string'
*
* const S1 = tuple(S.Semigroup, N.SemigroupSum)
* assert.deepStrictEqual(S1.concat(['a', 1], ['b', 2]), ['ab', 3])
*
* const S2 = tuple(S.Semigroup, N.SemigroupSum, B.SemigroupAll)
* assert.deepStrictEqual(S2.concat(['a', 1, true], ['b', 2, false]), ['ab', 3, false])
*
* @since 2.10.0
*/
var tuple = function () {
var semigroups = [];
for (var _i = 0; _i < arguments.length; _i++) {
semigroups[_i] = arguments[_i];
}
return ({
concat: function (first, second) { return semigroups.map(function (s, i) { return s.concat(first[i], second[i]); }); }
});
};
exports.tuple = tuple;
/**
* Between each pair of elements insert `middle`.
*
* @example
* import { intercalate } from 'fp-ts/Semigroup'
* import * as S from 'fp-ts/string'
* import { pipe } from 'fp-ts/function'
*
* const S1 = pipe(S.Semigroup, intercalate(' + '))
*
* assert.strictEqual(S1.concat('a', 'b'), 'a + b')
*
* @since 2.10.0
*/
var intercalate = function (middle) {
return function (S) { return ({
concat: function (x, y) { return S.concat(x, S.concat(middle, y)); }
}); };
};
exports.intercalate = intercalate;
// -------------------------------------------------------------------------------------
// instances
// -------------------------------------------------------------------------------------
/**
* Always return the first argument.
*
* @example
* import * as S from 'fp-ts/Semigroup'
*
* assert.deepStrictEqual(S.first<number>().concat(1, 2), 1)
*
* @category instances
* @since 2.10.0
*/
var first = function () { return ({ concat: function_1.identity }); };
exports.first = first;
/**
* Always return the last argument.
*
* @example
* import * as S from 'fp-ts/Semigroup'
*
* assert.deepStrictEqual(S.last<number>().concat(1, 2), 2)
*
* @category instances
* @since 2.10.0
*/
var last = function () { return ({ concat: function (_, y) { return y; } }); };
exports.last = last;
// -------------------------------------------------------------------------------------
// utils
// -------------------------------------------------------------------------------------
/**
* Given a sequence of `as`, concat them and return the total.
*
* If `as` is empty, return the provided `startWith` value.
*
* @example
* import { concatAll } from 'fp-ts/Semigroup'
* import * as N from 'fp-ts/number'
*
* const sum = concatAll(N.SemigroupSum)(0)
*
* assert.deepStrictEqual(sum([1, 2, 3]), 6)
* assert.deepStrictEqual(sum([]), 0)
*
* @since 2.10.0
*/
exports.concatAll = M.concatAll;
// -------------------------------------------------------------------------------------
// deprecated
// -------------------------------------------------------------------------------------
/**
* Use `void` module instead.
*
* @category zone of death
* @since 2.0.0
* @deprecated
*/
exports.semigroupVoid = (0, exports.constant)(undefined);
/**
* Use [`getAssignSemigroup`](./struct.ts.html#getAssignSemigroup) instead.
*
* @category zone of death
* @since 2.0.0
* @deprecated
*/
var getObjectSemigroup = function () { return ({
concat: function (first, second) { return Object.assign({}, first, second); }
}); };
exports.getObjectSemigroup = getObjectSemigroup;
/**
* Use [`last`](#last) instead.
*
* @category zone of death
* @since 2.0.0
* @deprecated
*/
exports.getLastSemigroup = exports.last;
/**
* Use [`first`](#first) instead.
*
* @category zone of death
* @since 2.0.0
* @deprecated
*/
exports.getFirstSemigroup = exports.first;
/**
* Use [`tuple`](#tuple) instead.
*
* @category zone of death
* @since 2.0.0
* @deprecated
*/
exports.getTupleSemigroup = exports.tuple;
/**
* Use [`struct`](#struct) instead.
*
* @category zone of death
* @since 2.0.0
* @deprecated
*/
exports.getStructSemigroup = exports.struct;
/**
* Use [`reverse`](#reverse) instead.
*
* @category zone of death
* @since 2.0.0
* @deprecated
*/
exports.getDualSemigroup = exports.reverse;
/**
* Use [`max`](#max) instead.
*
* @category zone of death
* @since 2.0.0
* @deprecated
*/
exports.getJoinSemigroup = exports.max;
/**
* Use [`min`](#min) instead.
*
* @category zone of death
* @since 2.0.0
* @deprecated
*/
exports.getMeetSemigroup = exports.min;
/**
* Use [`intercalate`](#intercalate) instead.
*
* @category zone of death
* @since 2.5.0
* @deprecated
*/
exports.getIntercalateSemigroup = exports.intercalate;
function fold(S) {
var concatAllS = (0, exports.concatAll)(S);
return function (startWith, as) { return (as === undefined ? concatAllS(startWith) : concatAllS(startWith)(as)); };
}
/**
* Use [`SemigroupAll`](./boolean.ts.html#SemigroupAll) instead.
*
* @category zone of death
* @since 2.0.0
* @deprecated
*/
exports.semigroupAll = {
concat: function (x, y) { return x && y; }
};
/**
* Use [`SemigroupAny`](./boolean.ts.html#SemigroupAny) instead.
*
* @category zone of death
* @since 2.0.0
* @deprecated
*/
exports.semigroupAny = {
concat: function (x, y) { return x || y; }
};
/**
* Use [`getSemigroup`](./function.ts.html#getSemigroup) instead.
*
* @category zone of death
* @since 2.0.0
* @deprecated
*/
exports.getFunctionSemigroup = function_1.getSemigroup;
/**
* Use [`Semigroup`](./string.ts.html#Semigroup) instead.
*
* @category zone of death
* @since 2.0.0
* @deprecated
*/
exports.semigroupString = {
concat: function (x, y) { return x + y; }
};
/**
* Use [`SemigroupSum`](./number.ts.html#SemigroupSum) instead.
*
* @category zone of death
* @since 2.0.0
* @deprecated
*/
exports.semigroupSum = {
concat: function (x, y) { return x + y; }
};
/**
* Use [`SemigroupProduct`](./number.ts.html#SemigroupProduct) instead.
*
* @category zone of death
* @since 2.0.0
* @deprecated
*/
exports.semigroupProduct = {
concat: function (x, y) { return x * y; }
};
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