diff options
Diffstat (limited to 'node_modules/bluebird/js/main/catch_filter.js')
-rw-r--r-- | node_modules/bluebird/js/main/catch_filter.js | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/node_modules/bluebird/js/main/catch_filter.js b/node_modules/bluebird/js/main/catch_filter.js new file mode 100644 index 000000000..040f05720 --- /dev/null +++ b/node_modules/bluebird/js/main/catch_filter.js @@ -0,0 +1,66 @@ +"use strict"; +module.exports = function(NEXT_FILTER) { +var util = require("./util.js"); +var errors = require("./errors.js"); +var tryCatch = util.tryCatch; +var errorObj = util.errorObj; +var keys = require("./es5.js").keys; +var TypeError = errors.TypeError; + +function CatchFilter(instances, callback, promise) { + this._instances = instances; + this._callback = callback; + this._promise = promise; +} + +function safePredicate(predicate, e) { + var safeObject = {}; + var retfilter = tryCatch(predicate).call(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\u000a\u000a See http://goo.gl/o84o68\u000a"); + return errorObj; + } + return retfilter; +} + +CatchFilter.prototype.doFilter = function (e) { + var cb = this._callback; + var promise = this._promise; + var boundTo = promise._boundTo; + 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 = tryCatch(cb).call(boundTo, e); + if (ret === errorObj) { + NEXT_FILTER.e = ret.e; + return NEXT_FILTER; + } + return ret; + } else if (typeof item === "function" && !itemIsErrorType) { + var shouldHandle = safePredicate(item, e); + if (shouldHandle === errorObj) { + e = errorObj.e; + break; + } else if (shouldHandle) { + var ret = tryCatch(cb).call(boundTo, e); + if (ret === errorObj) { + NEXT_FILTER.e = ret.e; + return NEXT_FILTER; + } + return ret; + } + } + } + NEXT_FILTER.e = e; + return NEXT_FILTER; +}; + +return CatchFilter; +}; |