| /** |
| * Copyright (c) 2014 Petka Antonov |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a copy |
| * of this software and associated documentation files (the "Software"), to deal |
| * in the Software without restriction, including without limitation the rights |
| * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| * copies of the Software, and to permit persons to whom the Software is |
| * furnished to do so, subject to the following conditions:</p> |
| * |
| * The above copyright notice and this permission notice shall be included in |
| * all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| * THE SOFTWARE. |
| * |
| */ |
| "use strict"; |
| module.exports = function(NEXT_FILTER) { |
| var util = require("./util.js"); |
| var errors = require("./errors.js"); |
| var tryCatch1 = util.tryCatch1; |
| var errorObj = util.errorObj; |
| var keys = require("./es5.js").keys; |
| |
| function CatchFilter(instances, callback, promise) { |
| this._instances = instances; |
| this._callback = callback; |
| this._promise = promise; |
| } |
| |
| function CatchFilter$_safePredicate(predicate, e) { |
| var safeObject = {}; |
| var retfilter = tryCatch1(predicate, safeObject, e); |
| |
| if (retfilter === errorObj) return retfilter; |
| |
| var safeKeys = keys(safeObject); |
| if (safeKeys.length) { |
| errorObj.e = new TypeError( |
| "Catch filter must inherit from Error " |
| + "or be a simple predicate function"); |
| return errorObj; |
| } |
| return retfilter; |
| } |
| |
| CatchFilter.prototype.doFilter = function CatchFilter$_doFilter(e) { |
| var cb = this._callback; |
| var promise = this._promise; |
| var boundTo = promise._isBound() ? promise._boundTo : void 0; |
| for (var i = 0, len = this._instances.length; i < len; ++i) { |
| var item = this._instances[i]; |
| var itemIsErrorType = item === Error || |
| (item != null && item.prototype instanceof Error); |
| |
| if (itemIsErrorType && e instanceof item) { |
| var ret = tryCatch1(cb, boundTo, e); |
| if (ret === errorObj) { |
| NEXT_FILTER.e = ret.e; |
| return NEXT_FILTER; |
| } |
| return ret; |
| } else if (typeof item === "function" && !itemIsErrorType) { |
| var shouldHandle = CatchFilter$_safePredicate(item, e); |
| if (shouldHandle === errorObj) { |
| var trace = errors.canAttach(errorObj.e) |
| ? errorObj.e |
| : new Error(errorObj.e + ""); |
| this._promise._attachExtraTrace(trace); |
| e = errorObj.e; |
| break; |
| } else if (shouldHandle) { |
| var ret = tryCatch1(cb, boundTo, e); |
| if (ret === errorObj) { |
| NEXT_FILTER.e = ret.e; |
| return NEXT_FILTER; |
| } |
| return ret; |
| } |
| } |
| } |
| NEXT_FILTER.e = e; |
| return NEXT_FILTER; |
| }; |
| |
| return CatchFilter; |
| }; |