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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
"use strict";
function logToConsole(e) {
console.exception(e);
}
var catchAndLog = exports.catchAndLog = function(callback,
defaultResponse,
logException) {
if (!logException)
logException = logToConsole;
return function() {
try {
return callback.apply(this, arguments);
} catch (e) {
logException(e);
return defaultResponse;
}
};
};
exports.catchAndLogProps = function catchAndLogProps(object,
props,
defaultResponse,
logException) {
if (typeof(props) == "string")
props = [props];
props.forEach(
function(property) {
object[property] = catchAndLog(object[property],
defaultResponse,
logException);
});
};
/**
* Catch and return an exception while calling the callback. If the callback
* doesn't throw, return the return value of the callback in a way that makes it
* possible to distinguish between a return value and an exception.
*
* This function is useful when you need to pass the result of a call across
* a process boundary (across which exceptions don't propagate). It probably
* doesn't need to be factored out into this module, since it is only used by
* a single caller, but putting it here works around bug 625560.
*/
exports.catchAndReturn = function(callback) {
return function() {
try {
return { returnValue: callback.apply(this, arguments) };
}
catch (exception) {
return { exception: exception };
}
};
};
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