The Tor Browser / file comparison
comparison: addon-sdk/source/lib/sdk/deprecated/errors.js
addon-sdk/source/lib/sdk/deprecated/errors.js
- branch
- TOR_BUG_3246
- changeset 7
- 129ffea94266
equal
deleted
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| -1:000000000000 | 0:106a16c12dcf |
|---|---|
| 1 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 2 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 3 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 4 | |
| 5 "use strict"; | |
| 6 | |
| 7 module.metadata = { | |
| 8 "stability": "deprecated" | |
| 9 }; | |
| 10 | |
| 11 function logToConsole(e) { | |
| 12 console.exception(e); | |
| 13 } | |
| 14 | |
| 15 var catchAndLog = exports.catchAndLog = function(callback, | |
| 16 defaultResponse, | |
| 17 logException) { | |
| 18 if (!logException) | |
| 19 logException = logToConsole; | |
| 20 | |
| 21 return function() { | |
| 22 try { | |
| 23 return callback.apply(this, arguments); | |
| 24 } catch (e) { | |
| 25 logException(e); | |
| 26 return defaultResponse; | |
| 27 } | |
| 28 }; | |
| 29 }; | |
| 30 | |
| 31 exports.catchAndLogProps = function catchAndLogProps(object, | |
| 32 props, | |
| 33 defaultResponse, | |
| 34 logException) { | |
| 35 if (typeof(props) == "string") | |
| 36 props = [props]; | |
| 37 props.forEach( | |
| 38 function(property) { | |
| 39 object[property] = catchAndLog(object[property], | |
| 40 defaultResponse, | |
| 41 logException); | |
| 42 }); | |
| 43 }; | |
| 44 | |
| 45 /** | |
| 46 * Catch and return an exception while calling the callback. If the callback | |
| 47 * doesn't throw, return the return value of the callback in a way that makes it | |
| 48 * possible to distinguish between a return value and an exception. | |
| 49 * | |
| 50 * This function is useful when you need to pass the result of a call across | |
| 51 * a process boundary (across which exceptions don't propagate). It probably | |
| 52 * doesn't need to be factored out into this module, since it is only used by | |
| 53 * a single caller, but putting it here works around bug 625560. | |
| 54 */ | |
| 55 exports.catchAndReturn = function(callback) { | |
| 56 return function() { | |
| 57 try { | |
| 58 return { returnValue: callback.apply(this, arguments) }; | |
| 59 } | |
| 60 catch (exception) { | |
| 61 return { exception: exception }; | |
| 62 } | |
| 63 }; | |
| 64 }; |
