was.js – Diff between revs 29 and 30

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1 /*************************************************************************/ 1 /*************************************************************************/
2 /* Copyright (C) 2017 Wizardry and Steamworks - License: GNU GPLv3 */ 2 /* Copyright (C) 2017 Wizardry and Steamworks - License: GNU GPLv3 */
3 /*************************************************************************/ 3 /*************************************************************************/
4 /* fuss/lambda_calculus/functional_programming/aggregators @ grimore.org */ 4 /* fuss/lambda_calculus/functional_programming/aggregators @ grimore.org */
5 /*************************************************************************/ 5 /*************************************************************************/
6 // Vanilla ES6 JavaScript 6 // Vanilla ES6 JavaScript
7 function wasSwitch(q, d, ...c) { 7 function wasSwitch(q, d, ...c) {
8 if(c.length % 2 !== 0) { 8 if(c.length % 2 !== 0) {
9 throw "Pairs of predicates expected for cases"; 9 throw "Pairs of predicates expected for cases";
10 } 10 }
11 11
12 (Array.isArray(q) ? q : [ q ]).forEach((s) => { 12 (Array.isArray(q) ? q : [ q ]).forEach((s) => {
13 var m = false; 13 var m = false;
14 for(var i = 0; i < c.length; i += 2) { 14 for(var i = 0; i < c.length; i += 2) {
15 if(!c[i](s)) { 15 if(!c[i](s)) {
16 continue; 16 continue;
17 } 17 }
18 if(!c[i + 1](s)) { 18 if(!c[i + 1](s)) {
19 continue; 19 continue;
20 } 20 }
21 m = true; 21 m = true;
22 } 22 }
23 23
24 if(!m) { 24 if(!m) {
25 d(s); 25 d(s);
26 } 26 }
27 }); 27 });
28 } 28 }
29 if (!Array.prototype.switch) { 29 if (!Array.prototype.switch) {
30 Array.prototype.switch = function(d, ...c) { 30 Array.prototype.switch = function(d, ...c) {
31 wasSwitch(this, d, ...c) 31 wasSwitch(this, d, ...c);
32 }; 32 };
33 } 33 }
34 // jQuery 34 // jQuery
35 if(typeof jQuery === 'function') { 35 if(typeof jQuery === 'function') {
36 $.extend({ 36 $.extend({
37 switch: wasSwitch 37 switch: wasSwitch
38 }); 38 });
39 } 39 }
40   40  
41 /*************************************************************************/ 41 /*************************************************************************/
42 /* Node.JS package export. */ 42 /* Node.JS package export. */
43 /*************************************************************************/ 43 /*************************************************************************/
44 module.exports.lambda = { 44 module.exports.lambda = {
45 switch: wasSwitch 45 switch: wasSwitch
46 }; 46 };
47   47