142 lines
4.7 KiB
JavaScript
142 lines
4.7 KiB
JavaScript
import { tuple } from './function';
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import * as _ from './internal';
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export function ap(F, G) {
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return function (fa) {
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return function (fab) {
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return F.ap(F.map(fab, function (gab) { return function (ga) { return G.ap(gab, ga); }; }), fa);
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};
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};
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}
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export function apFirst(A) {
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return function (second) { return function (first) {
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return A.ap(A.map(first, function (a) { return function () { return a; }; }), second);
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}; };
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}
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export function apSecond(A) {
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return function (second) {
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return function (first) {
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return A.ap(A.map(first, function () { return function (b) { return b; }; }), second);
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};
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};
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}
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export function apS(F) {
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return function (name, fb) {
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return function (fa) {
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return F.ap(F.map(fa, function (a) { return function (b) {
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var _a;
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return Object.assign({}, a, (_a = {}, _a[name] = b, _a));
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}; }), fb);
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};
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};
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}
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export function getApplySemigroup(F) {
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return function (S) { return ({
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concat: function (first, second) {
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return F.ap(F.map(first, function (x) { return function (y) { return S.concat(x, y); }; }), second);
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}
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}); };
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}
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function curried(f, n, acc) {
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return function (x) {
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var combined = Array(acc.length + 1);
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for (var i = 0; i < acc.length; i++) {
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combined[i] = acc[i];
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}
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combined[acc.length] = x;
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return n === 0 ? f.apply(null, combined) : curried(f, n - 1, combined);
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};
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}
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var tupleConstructors = {
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1: function (a) { return [a]; },
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2: function (a) { return function (b) { return [a, b]; }; },
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3: function (a) { return function (b) { return function (c) { return [a, b, c]; }; }; },
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4: function (a) { return function (b) { return function (c) { return function (d) { return [a, b, c, d]; }; }; }; },
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5: function (a) { return function (b) { return function (c) { return function (d) { return function (e) { return [a, b, c, d, e]; }; }; }; }; }
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};
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function getTupleConstructor(len) {
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if (!_.has.call(tupleConstructors, len)) {
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tupleConstructors[len] = curried(tuple, len - 1, []);
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}
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return tupleConstructors[len];
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}
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export function sequenceT(F) {
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return function () {
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var args = [];
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for (var _i = 0; _i < arguments.length; _i++) {
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args[_i] = arguments[_i];
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}
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var len = args.length;
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var f = getTupleConstructor(len);
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var fas = F.map(args[0], f);
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for (var i = 1; i < len; i++) {
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fas = F.ap(fas, args[i]);
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}
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return fas;
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};
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}
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function getRecordConstructor(keys) {
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var len = keys.length;
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switch (len) {
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case 1:
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return function (a) {
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var _a;
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return (_a = {}, _a[keys[0]] = a, _a);
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};
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case 2:
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return function (a) { return function (b) {
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var _a;
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return (_a = {}, _a[keys[0]] = a, _a[keys[1]] = b, _a);
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}; };
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case 3:
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return function (a) { return function (b) { return function (c) {
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var _a;
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return (_a = {}, _a[keys[0]] = a, _a[keys[1]] = b, _a[keys[2]] = c, _a);
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}; }; };
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case 4:
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return function (a) { return function (b) { return function (c) { return function (d) {
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var _a;
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return (_a = {},
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_a[keys[0]] = a,
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_a[keys[1]] = b,
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_a[keys[2]] = c,
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_a[keys[3]] = d,
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_a);
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}; }; }; };
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case 5:
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return function (a) { return function (b) { return function (c) { return function (d) { return function (e) {
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var _a;
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return (_a = {},
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_a[keys[0]] = a,
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_a[keys[1]] = b,
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_a[keys[2]] = c,
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_a[keys[3]] = d,
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_a[keys[4]] = e,
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_a);
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}; }; }; }; };
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default:
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return curried(function () {
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var args = [];
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for (var _i = 0; _i < arguments.length; _i++) {
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args[_i] = arguments[_i];
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}
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var r = {};
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for (var i = 0; i < len; i++) {
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r[keys[i]] = args[i];
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}
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return r;
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}, len - 1, []);
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}
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}
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export function sequenceS(F) {
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return function (r) {
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var keys = Object.keys(r);
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var len = keys.length;
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var f = getRecordConstructor(keys);
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var fr = F.map(r[keys[0]], f);
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for (var i = 1; i < len; i++) {
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fr = F.ap(fr, r[keys[i]]);
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}
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return fr;
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};
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}
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