зеркало из https://github.com/mozilla/gecko-dev.git
91 строка
3.0 KiB
JavaScript
91 строка
3.0 KiB
JavaScript
# vim:set ts=2 sw=2 sts=2 ci et:
|
|
# -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
|
|
#
|
|
# 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/.
|
|
#
|
|
# This file contains functions that are useful for debugging purposes from
|
|
# within JavaScript code.
|
|
|
|
var EXPORTED_SYMBOLS = ["NS_ASSERT"];
|
|
|
|
var gTraceOnAssert = true;
|
|
|
|
/**
|
|
* This function provides a simple assertion function for JavaScript.
|
|
* If the condition is true, this function will do nothing. If the
|
|
* condition is false, then the message will be printed to the console
|
|
* and an alert will appear showing a stack trace, so that the (alpha
|
|
* or nightly) user can file a bug containing it. For future enhancements,
|
|
* see bugs 330077 and 330078.
|
|
*
|
|
* To suppress the dialogs, you can run with the environment variable
|
|
* XUL_ASSERT_PROMPT set to 0 (if unset, this defaults to 1).
|
|
*
|
|
* @param condition represents the condition that we're asserting to be
|
|
* true when we call this function--should be
|
|
* something that can be evaluated as a boolean.
|
|
* @param message a string to be displayed upon failure of the assertion
|
|
*/
|
|
|
|
function NS_ASSERT(condition, message) {
|
|
if (condition)
|
|
return;
|
|
|
|
var releaseBuild = true;
|
|
var defB = Components.classes["@mozilla.org/preferences-service;1"]
|
|
.getService(Components.interfaces.nsIPrefService)
|
|
.getDefaultBranch(null);
|
|
try {
|
|
switch (defB.getCharPref("app.update.channel")) {
|
|
case "nightly":
|
|
case "beta":
|
|
case "default":
|
|
releaseBuild = false;
|
|
}
|
|
} catch(ex) {}
|
|
|
|
var caller = arguments.callee.caller;
|
|
var assertionText = "ASSERT: " + message + "\n";
|
|
|
|
if (releaseBuild) {
|
|
// Just report the error to the console
|
|
Components.utils.reportError(assertionText);
|
|
return;
|
|
}
|
|
|
|
// Otherwise, dump to stdout and launch an assertion failure dialog
|
|
dump(assertionText);
|
|
|
|
var stackText = "";
|
|
if (gTraceOnAssert) {
|
|
stackText = "Stack Trace: \n";
|
|
var count = 0;
|
|
while (caller) {
|
|
stackText += count++ + ":" + caller.name + "(";
|
|
for (var i = 0; i < caller.arguments.length; ++i) {
|
|
var arg = caller.arguments[i];
|
|
stackText += arg;
|
|
if (i < caller.arguments.length - 1)
|
|
stackText += ",";
|
|
}
|
|
stackText += ")\n";
|
|
caller = caller.arguments.callee.caller;
|
|
}
|
|
}
|
|
|
|
var environment = Components.classes["@mozilla.org/process/environment;1"].
|
|
getService(Components.interfaces.nsIEnvironment);
|
|
if (environment.exists("XUL_ASSERT_PROMPT") &&
|
|
!parseInt(environment.get("XUL_ASSERT_PROMPT")))
|
|
return;
|
|
|
|
var source = null;
|
|
if (this.window)
|
|
source = this.window;
|
|
var ps = Components.classes["@mozilla.org/embedcomp/prompt-service;1"].
|
|
getService(Components.interfaces.nsIPromptService);
|
|
ps.alert(source, "Assertion Failed", assertionText + stackText);
|
|
}
|