twitst4tz

twitter statistics web application
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catch_filter.js (1426B)

      1 "use strict";
      2 module.exports = function(NEXT_FILTER) {
      3 var util = require("./util");
      4 var getKeys = require("./es5").keys;
      5 var tryCatch = util.tryCatch;
      6 var errorObj = util.errorObj;
      7 
      8 function catchFilter(instances, cb, promise) {
      9     return function(e) {
     10         var boundTo = promise._boundValue();
     11         predicateLoop: for (var i = 0; i < instances.length; ++i) {
     12             var item = instances[i];
     13 
     14             if (item === Error ||
     15                 (item != null && item.prototype instanceof Error)) {
     16                 if (e instanceof item) {
     17                     return tryCatch(cb).call(boundTo, e);
     18                 }
     19             } else if (typeof item === "function") {
     20                 var matchesPredicate = tryCatch(item).call(boundTo, e);
     21                 if (matchesPredicate === errorObj) {
     22                     return matchesPredicate;
     23                 } else if (matchesPredicate) {
     24                     return tryCatch(cb).call(boundTo, e);
     25                 }
     26             } else if (util.isObject(e)) {
     27                 var keys = getKeys(item);
     28                 for (var j = 0; j < keys.length; ++j) {
     29                     var key = keys[j];
     30                     if (item[key] != e[key]) {
     31                         continue predicateLoop;
     32                     }
     33                 }
     34                 return tryCatch(cb).call(boundTo, e);
     35             }
     36         }
     37         return NEXT_FILTER;
     38     };
     39 }
     40 
     41 return catchFilter;
     42 };