[bootstrap] Add code to manually reload stale cached modules on rehash.

--HG--
branch : bootstrapped

14 files changed, 122 insertions, 78 deletions

diff --git a/common/bootstrap.js b/common/bootstrap.js
index 011edd14..68954ad9 100755
--- a/common/bootstrap.js
+++ b/common/bootstrap.js
@@ -16,7 +16,7 @@ const resourceProto = Services.io.getProtocolHandler("resource")
                               .QueryInterface(Ci.nsIResProtocolHandler);
 const categoryManager = Cc["@mozilla.org/categorymanager;1"].getService(Ci.nsICategoryManager);
 const manager = Components.manager.QueryInterface(Ci.nsIComponentRegistrar);
-const storage = Cc["@mozilla.org/fuel/application;1"].getService(Ci.fuelIApplication);
+const storage = Cc["@mozilla.org/fuel/application;1"].getService(Ci.fuelIApplication).storage;
 
 function httpGet(url) {
     let xmlhttp = Cc["@mozilla.org/xmlextras/xmlhttprequest;1"].createInstance(Ci.nsIXMLHttpRequest);
@@ -41,6 +41,7 @@ let addon = null;
 let basePath = null;
 let components = {};
 let getURI = null;
+var JSMLoader = storage.get("dactyl.JSMLoader", { get load() Cu.import });
 
 function startup(data, reason) {
     dump("dactyl: bootstrap: startup " + reasonToString(reason) + "\n");
@@ -87,12 +88,12 @@ FactoryProxy.prototype = {
     },
     unregister: function () {
         dump("dactyl: bootstrap: unregister: " + this.classID + " " + this.contractID + "\n");
-        manager.unregisterFactory(this.classID,
-                                  this);
+        manager.unregisterFactory(this.classID, this);
     },
     get module() {
         Object.defineProperty(this, "module", { value: {}, enumerable: true });
-        Cu.import(this.url, this.module);
+        JSMLoader.load(this.url, this.module);
+        JSMLoader.registerGlobal(this.url, this.module.NSGetFactory);
         return this.module;
     },
     createInstance: function (iids) {
@@ -138,7 +139,6 @@ function init() {
             break;
         case "contract":
             components[fields[2]].contractID = fields[1];
-            components[fields[2]].register();
             break;
 
         case "resource":
@@ -146,11 +146,13 @@ function init() {
         }
     }
 
-    Cc["@dactyl.googlecode.com/base/xpc-interface-shim"].createInstance()
-
     Services.obs.notifyObservers(null, "dactyl-rehash", null);
 
-    Cu.import("resource://dactyl/base.jsm");
+    JSMLoader.load("resource://dactyl/base.jsm", global);
+
+    for each (let component in components)
+        component.register();
+
     require(global, "prefs");
     require(global, "services");
 
diff --git a/common/components/commandline-handler.js b/common/components/commandline-handler.js
index 3083af0f..cee31646 100644
--- a/common/components/commandline-handler.js
+++ b/common/components/commandline-handler.js
@@ -4,14 +4,14 @@
 // given in the LICENSE.txt file included with this file.
 "use strict";
 
-const Ci = Components.interfaces, Cc = Components.classes;
+var Ci = Components.interfaces, Cc = Components.classes;
 
 Components.utils.import("resource://gre/modules/XPCOMUtils.jsm");
 
-const prefs = Cc["@mozilla.org/preferences-service;1"].getService(Ci.nsIPrefService)
+var prefs = Cc["@mozilla.org/preferences-service;1"].getService(Ci.nsIPrefService)
     .getBranch("extensions.dactyl.");
-const appName = prefs.getComplexValue("appName", Ci.nsISupportsString).data;
-const name = prefs.getComplexValue("name", Ci.nsISupportsString).data;
+var appName = prefs.getComplexValue("appName", Ci.nsISupportsString).data;
+var name = prefs.getComplexValue("name", Ci.nsISupportsString).data;
 
 function CommandLineHandler() {
     this.wrappedJSObject = this;
@@ -45,9 +45,9 @@ CommandLineHandler.prototype = {
 };
 
 if (XPCOMUtils.generateNSGetFactory)
-    const NSGetFactory = XPCOMUtils.generateNSGetFactory([CommandLineHandler]);
+    var NSGetFactory = XPCOMUtils.generateNSGetFactory([CommandLineHandler]);
 else
-    const NSGetModule = XPCOMUtils.generateNSGetModule([CommandLineHandler]);
+    var NSGetModule = XPCOMUtils.generateNSGetModule([CommandLineHandler]);
 var EXPORTED_SYMBOLS = ["NSGetFactory"];
 
 // vim: set fdm=marker sw=4 ts=4 et:
diff --git a/common/components/protocols.js b/common/components/protocols.js
index 8b8069a5..ba89090b 100644
--- a/common/components/protocols.js
+++ b/common/components/protocols.js
@@ -12,16 +12,16 @@
  * By Kris Maglione, ideas from Ed Anuff's nsChromeExtensionHandler.
  */
 
-const NAME = "protocols";
-const global = this;
-const Cc = Components.classes;
-const Ci = Components.interfaces;
-const Cu = Components.utils;
+var NAME = "protocols";
+var global = this;
+var Cc = Components.classes;
+var Ci = Components.interfaces;
+var Cu = Components.utils;
 
 Components.utils.import("resource://gre/modules/XPCOMUtils.jsm");
 
-const ioService = Cc["@mozilla.org/network/io-service;1"].getService(Ci.nsIIOService);
-const systemPrincipal = Cc["@mozilla.org/systemprincipal;1"].getService(Ci.nsIPrincipal);
+var ioService = Cc["@mozilla.org/network/io-service;1"].getService(Ci.nsIIOService);
+var systemPrincipal = Cc["@mozilla.org/systemprincipal;1"].getService(Ci.nsIPrincipal);
 
 function dataURL(type, data) "data:" + (type || "application/xml;encoding=UTF-8") + "," + escape(data);
 function makeChannel(url, orig) {
@@ -204,9 +204,9 @@ Shim.prototype = {
 };
 
 if (XPCOMUtils.generateNSGetFactory)
-    const NSGetFactory = XPCOMUtils.generateNSGetFactory([AboutHandler, ChromeData, Dactyl, Shim]);
+    var NSGetFactory = XPCOMUtils.generateNSGetFactory([AboutHandler, ChromeData, Dactyl, Shim]);
 else
-    const NSGetModule = XPCOMUtils.generateNSGetModule([AboutHandler, ChromeData, Dactyl, Shim]);
+    var NSGetModule = XPCOMUtils.generateNSGetModule([AboutHandler, ChromeData, Dactyl, Shim]);
 var EXPORTED_SYMBOLS = ["NSGetFactory"];
 
 // vim: set fdm=marker sw=4 ts=4 et:
diff --git a/common/modules/base.jsm b/common/modules/base.jsm
index 7d393be2..6f3a27db 100644
--- a/common/modules/base.jsm
+++ b/common/modules/base.jsm
@@ -4,10 +4,49 @@
 // given in the LICENSE.txt file included with this file.
 "use strict";
 
-const Cc = Components.classes;
-const Ci = Components.interfaces;
-const Cr = Components.results;
-const Cu = Components.utils;
+if (!JSMLoader)
+    var JSMLoader = {
+        builtin: Components.utils.Sandbox(this),
+        globals: {},
+        stale: {},
+        load: function load(url, target) {
+            dump("dactyl: load: " + url + "\n");
+            if (this.stale[url]) {
+                delete this.stale[url];
+                dump("dactyl: load stale\n");
+
+                let global = this.globals[url];
+                for each (let prop in Object.getOwnPropertyNames(global))
+                    try {
+                        if (!set.has(this.builtin, prop) && global[prop] != this && global[prop] != set)
+                            delete global[prop]
+                    }
+                    catch (e) {}
+
+                Components.classes["@mozilla.org/moz/jssubscript-loader;1"]
+                          .getService(Components.interfaces.mozIJSSubScriptLoader)
+                          .loadSubScript(url, this.globals[url]);
+                dump("dactyl: load reloaded: " + url + "\n");
+            }
+            Components.utils.import(url, target);
+        },
+        purge: function purge() {
+            for (let [url, global] in Iterator(this.globals))
+                this.stale[url] = true;
+        },
+        registerGlobal: function registerGlobal(uri, obj) {
+            if (Cu.getGlobalForObject)
+                this.globals[uri] = Cu.getGlobalForObject(obj);
+        }
+    };
+
+var Cc = Components.classes;
+var Ci = Components.interfaces;
+var Cr = Components.results;
+var Cu = Components.utils;
+
+Cc["@mozilla.org/fuel/application;1"].getService(Ci.fuelIApplication)
+    .storage.set("dactyl.JSMLoader", JSMLoader);
 
 Cu.import("resource://gre/modules/XPCOMUtils.jsm");
 try {
@@ -98,7 +137,8 @@ let loaded = {};
 let currentModule;
 function defineModule(name, params) {
     let module = Cu.getGlobalForObject ? Cu.getGlobalForObject(params) : params.__parent__;
-    defineModule.globals.push(module);
+    JSMLoader.registerGlobal(Components.stack.caller.filename, module);
+
     module.NAME = name;
     module.EXPORTED_SYMBOLS = params.exports || [];
     defineModule.loadLog.push("defineModule " + name);
@@ -115,7 +155,6 @@ function defineModule(name, params) {
     currentModule = module;
 }
 
-defineModule.globals = [];
 defineModule.loadLog = [];
 Object.defineProperty(defineModule.loadLog, "push", {
     value: function (val) { defineModule.dump(val + "\n"); this[this.length] = val; }
@@ -162,7 +201,7 @@ function endModule() {
 function require(obj, name, from) {
     try {
         defineModule.loadLog.push((from || "require") + ": loading " + name + " into " + obj.NAME);
-        Cu.import("resource://dactyl/" + name + ".jsm", obj);
+        JSMLoader.load("resource://dactyl/" + name + ".jsm", obj);
     }
     catch (e) {
         defineModule.dump("loading " + String.quote("resource://dactyl/" + name + ".jsm") + "\n");
@@ -176,7 +215,7 @@ function require(obj, name, from) {
 defineModule("base", {
     // sed -n 's/^(const|function) ([a-zA-Z0-9_]+).*/	"\2",/p' base.jsm | sort | fmt
     exports: [
-        "ErrorBase", "Cc", "Ci", "Class", "Cr", "Cu", "Module", "Object", "Runnable",
+        "ErrorBase", "Cc", "Ci", "Class", "Cr", "Cu", "Module", "JSMLoader", "Object", "Runnable",
         "Struct", "StructBase", "Timer", "UTF8", "XPCOM", "XPCOMUtils", "array",
         "call", "callable", "ctypes", "curry", "debuggerProperties", "defineModule",
         "deprecated", "endModule", "forEach", "isArray", "isGenerator",
@@ -478,7 +517,7 @@ function isSubclass(targ, src) {
  * @param {object|string|[object|string]} src The types to check targ against.
  * @returns {boolean}
  */
-const isinstance_types = {
+var isinstance_types = {
     boolean: Boolean,
     string: String,
     function: Function,
@@ -513,7 +552,7 @@ function isObject(obj) typeof obj === "object" && obj != null || obj instanceof
  * any window, frame, namespace, or execution context, which
  * is not the case when using (obj instanceof Array).
  */
-const isArray =
+var isArray =
     Array.isArray
         // This is bloody stupid.
         ? function isArray(val) Array.isArray(val) || val && val.constructor && val.constructor.name === "Array"
@@ -617,7 +656,7 @@ sandbox.__proto__ = this;
  * is prepended to its arguments.
  */
 // Hack to get around lack of access to caller in strict mode.
-const withCallerGlobal = Cu.evalInSandbox(<![CDATA[
+var withCallerGlobal = Cu.evalInSandbox(<![CDATA[
     (function withCallerGlobal(fn)
         function withCallerGlobal_wrapped()
             fn.apply(this,
@@ -860,7 +899,7 @@ function XPCOM(interfaces, superClass) {
 /**
  * An abstract base class for classes that wish to inherit from Error.
  */
-const ErrorBase = Class("ErrorBase", Error, {
+var ErrorBase = Class("ErrorBase", Error, {
     level: 2,
     init: function (message, level) {
         level = level || 0;
@@ -980,7 +1019,7 @@ let StructBase = Class("StructBase", Array, {
     }
 });
 
-const Timer = Class("Timer", {
+var Timer = Class("Timer", {
     init: function (minInterval, maxInterval, callback) {
         this._timer = services.Timer();
         this.callback = callback;
@@ -1056,7 +1095,7 @@ function octal(decimal) parseInt(decimal, 8);
 /**
  * Array utility methods.
  */
-const array = Class("array", Array, {
+var array = Class("array", Array, {
     init: function (ary) {
         if (isinstance(ary, ["Iterator", "Generator"]) || "__iterator__" in ary)
             ary = [k for (k in ary)];
diff --git a/common/modules/bookmarkcache.jsm b/common/modules/bookmarkcache.jsm
index e230a077..faa37313 100644
--- a/common/modules/bookmarkcache.jsm
+++ b/common/modules/bookmarkcache.jsm
@@ -10,8 +10,8 @@ defineModule("bookmarkcache", {
     require: ["services", "storage", "util"]
 });
 
-const Bookmark = Struct("url", "title", "icon", "post", "keyword", "tags", "id");
-const Keyword = Struct("keyword", "title", "icon", "url");
+var Bookmark = Struct("url", "title", "icon", "post", "keyword", "tags", "id");
+var Keyword = Struct("keyword", "title", "icon", "url");
 Bookmark.defaultValue("icon", function () BookmarkCache.getFavicon(this.url));
 Bookmark.setter = function (key, func) this.prototype.__defineSetter__(key, func);
 Bookmark.prototype.__defineGetter__("extra", function () [
@@ -33,9 +33,9 @@ Bookmark.setter("tags", function (val) {
         services.tagging.tagURI(this.uri, val);
 });
 
-const name = "bookmark-cache";
+var name = "bookmark-cache";
 
-const BookmarkCache = Module("BookmarkCache", XPCOM(Ci.nsINavBookmarkObserver), {
+var BookmarkCache = Module("BookmarkCache", XPCOM(Ci.nsINavBookmarkObserver), {
     POST: "bookmarkProperties/POSTData",
 
     init: function init() {
diff --git a/common/modules/highlight.jsm b/common/modules/highlight.jsm
index ebd15571..fd8d0709 100644
--- a/common/modules/highlight.jsm
+++ b/common/modules/highlight.jsm
@@ -11,9 +11,9 @@ defineModule("highlight", {
     use: ["template", "util"]
 });
 
-const Highlight = Struct("class", "selector", "sites",
-                         "default", "value", "agent",
-                         "base", "baseClass", "style");
+var Highlight = Struct("class", "selector", "sites",
+                       "default", "value", "agent",
+                       "base", "baseClass", "style");
 Highlight.liveProperty = function (name, prop) {
     let i = this.prototype.members[name];
     this.prototype.__defineGetter__(name, function () this[i]);
@@ -52,7 +52,7 @@ Highlight.prototype.toString = function ()
  *
  * @author Kris Maglione <maglione.k@gmail.com>
  */
-const Highlights = Module("Highlight", {
+var Highlights = Module("Highlight", {
     init: function () {
         this.highlight = {};
         this.loaded = {};
diff --git a/common/modules/overlay.jsm b/common/modules/overlay.jsm
index c7217174..37aaf98d 100644
--- a/common/modules/overlay.jsm
+++ b/common/modules/overlay.jsm
@@ -14,7 +14,7 @@ defineModule("overlay", {
  * @class ModuleBase
  * The base class for all modules.
  */
-const ModuleBase = Class("ModuleBase", {
+var ModuleBase = Class("ModuleBase", {
     /**
      * @property {[string]} A list of module prerequisites which
      * must be initialized before this module is loaded.
@@ -24,7 +24,7 @@ const ModuleBase = Class("ModuleBase", {
     toString: function () "[module " + this.constructor.className + "]"
 });
 
-const Overlay = Module("Overlay", {
+var Overlay = Module("Overlay", {
     init: function () {
         util.overlayWindow("chrome://browser/content/browser.xul", function (window) ({
             init: function (document) {
diff --git a/common/modules/prefs.jsm b/common/modules/prefs.jsm
index 63ebac52..c948dca9 100644
--- a/common/modules/prefs.jsm
+++ b/common/modules/prefs.jsm
@@ -13,7 +13,7 @@ defineModule("prefs", {
     use: ["template"]
 });
 
-const Prefs = Module("prefs", XPCOM([Ci.nsIObserver, Ci.nsISupportsWeakReference]), {
+var Prefs = Module("prefs", XPCOM([Ci.nsIObserver, Ci.nsISupportsWeakReference]), {
     SAVED: "extensions.dactyl.saved.",
     RESTORE: "extensions.dactyl.restore.",
 
diff --git a/common/modules/sanitizer.jsm b/common/modules/sanitizer.jsm
index 13274585..f9141d2c 100644
--- a/common/modules/sanitizer.jsm
+++ b/common/modules/sanitizer.jsm
@@ -24,7 +24,7 @@ let tmp = {};
 services.subscriptLoader.loadSubScript("chrome://browser/content/sanitize.js", tmp);
 tmp.Sanitizer.prototype.__proto__ = Class.prototype;
 
-const Range = Struct("min", "max");
+var Range = Struct("min", "max");
 Range.prototype.contains = function (date)
     date == null || (this.min == null || date >= this.min) && (this.max == null || date <= this.max);
 Range.prototype.__defineGetter__("isEternity", function () this.max == null && this.min == null);
@@ -33,7 +33,7 @@ Range.prototype.__defineGetter__("native", function ()
     this.isEternity ? null : [range.min || 0, range.max == null ? Number.MAX_VALUE : range.max]);
 
 
-const Item = Class("Item", {
+var Item = Class("Item", {
     init: function (name) {
         this.name = name;
     },
@@ -55,7 +55,7 @@ const Item = Class("Item", {
     SHUTDOWN_BRANCH: "privacy.clearOnShutdown."
 });
 
-const Sanitizer = Module("sanitizer", XPCOM([Ci.nsIObserver, Ci.nsISupportsWeakReference], tmp.Sanitizer), {
+var Sanitizer = Module("sanitizer", XPCOM([Ci.nsIObserver, Ci.nsISupportsWeakReference], tmp.Sanitizer), {
     sessionStart: Date.now() * 1000,
 
     init: function () {
diff --git a/common/modules/services.jsm b/common/modules/services.jsm
index d8cad7e0..da3faf17 100644
--- a/common/modules/services.jsm
+++ b/common/modules/services.jsm
@@ -14,7 +14,7 @@ defineModule("services", {
 /**
  * A lazily-instantiated XPCOM class and service cache.
  */
-const Services = Module("Services", {
+var Services = Module("Services", {
     init: function () {
         this.classes = {};
         this.services = {};
diff --git a/common/modules/storage.jsm b/common/modules/storage.jsm
index 6e06377b..bb18bf0e 100644
--- a/common/modules/storage.jsm
+++ b/common/modules/storage.jsm
@@ -7,14 +7,14 @@
 if (this.XPCSafeJSObjectWrapper == null)
     this.XPCSafeJSObjectWrapper = XPCNativeWrapper;
 
-const myObject = Object;
+var myObject = Object;
 Components.utils.import("resource://dactyl/base.jsm");
 defineModule("storage", {
     exports: ["File", "storage"],
     require: ["services", "util"]
 });
 
-const win32 = /^win(32|nt)$/i.test(services.runtime.OS);
+var win32 = /^win(32|nt)$/i.test(services.runtime.OS);
 
 function loadData(name, store, type) {
     try {
@@ -33,7 +33,7 @@ function saveData(obj) {
         storage.infoPath.child(obj.name).write(obj.serial);
 }
 
-const StoreBase = Class("StoreBase", {
+var StoreBase = Class("StoreBase", {
     OPTIONS: ["privateData", "replacer"],
 
     fireEvent: function (event, arg) { storage.fireEvent(this.name, event, arg); },
@@ -61,7 +61,7 @@ const StoreBase = Class("StoreBase", {
     save: function () { saveData(this); },
 });
 
-const ArrayStore = Class("ArrayStore", StoreBase, {
+var ArrayStore = Class("ArrayStore", StoreBase, {
     _constructor: Array,
 
     get length() this._object.length,
@@ -107,7 +107,7 @@ const ArrayStore = Class("ArrayStore", StoreBase, {
     __iterator__: function () Iterator(this._object),
 });
 
-const ObjectStore = Class("ObjectStore", StoreBase, {
+var ObjectStore = Class("ObjectStore", StoreBase, {
     _constructor: myObject,
 
     clear: function () {
@@ -142,7 +142,7 @@ const ObjectStore = Class("ObjectStore", StoreBase, {
     __iterator__: function () Iterator(this._object),
 });
 
-const Storage = Module("Storage", {
+var Storage = Module("Storage", {
     alwaysReload: {},
 
     init: function () {
@@ -269,7 +269,7 @@ const Storage = Module("Storage", {
  * @param {boolean} checkPWD Whether to allow expansion relative to the
  *          current directory. @default true
  */
-const File = Class("File", {
+var File = Class("File", {
     init: function (path, checkPWD) {
         let file = services.File();
 
diff --git a/common/modules/styles.jsm b/common/modules/styles.jsm
index 1049b899..bb4f0f03 100644
--- a/common/modules/styles.jsm
+++ b/common/modules/styles.jsm
@@ -12,11 +12,11 @@ defineModule("styles", {
 });
 
 function cssUri(css) "chrome-data:text/css," + encodeURI(css);
-const namespace = "@namespace html " + XHTML.uri.quote() + ";\n" +
+var namespace = "@namespace html " + XHTML.uri.quote() + ";\n" +
                   "@namespace xul " + XUL.uri.quote() + ";\n" +
                   "@namespace dactyl " + NS.uri.quote() + ";\n";
 
-const Sheet = Struct("name", "id", "sites", "css", "hive", "agent");
+var Sheet = Struct("name", "id", "sites", "css", "hive", "agent");
 Sheet.liveProperty = function (name) {
     let i = this.prototype.members[name];
     this.prototype.__defineGetter__(name, function () this[i]);
@@ -73,7 +73,7 @@ update(Sheet.prototype, {
     }
 });
 
-const Hive = Class("Hive", {
+var Hive = Class("Hive", {
     init: function () {
         this.sheets = [];
         this.names = {};
@@ -212,7 +212,7 @@ const Hive = Class("Hive", {
  *
  * @author Kris Maglione <maglione.k@gmail.com>
  */
-const Styles = Module("Styles", {
+var Styles = Module("Styles", {
     init: function () {
         this._id = 0;
         this.user = Hive();
diff --git a/common/modules/template.jsm b/common/modules/template.jsm
index 4bcfeee3..0a4652fc 100644
--- a/common/modules/template.jsm
+++ b/common/modules/template.jsm
@@ -13,7 +13,7 @@ defineModule("template", {
 
 default xml namespace = XHTML;
 
-const Template = Module("Template", {
+var Template = Module("Template", {
     add: function add(a, b) a + b,
     join: function join(c) function (a, b) a + c + b,
 
diff --git a/common/modules/util.jsm b/common/modules/util.jsm
index 88f2de29..26e56e7a 100644
--- a/common/modules/util.jsm
+++ b/common/modules/util.jsm
@@ -15,10 +15,10 @@ defineModule("util", {
     use: ["highlight", "storage", "template"]
 });
 
-const XBL = Namespace("xbl", "http://www.mozilla.org/xbl");
-const XHTML = Namespace("html", "http://www.w3.org/1999/xhtml");
-const XUL = Namespace("xul", "http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul");
-const NS = Namespace("dactyl", "http://vimperator.org/namespaces/liberator");
+var XBL = Namespace("xbl", "http://www.mozilla.org/xbl");
+var XHTML = Namespace("html", "http://www.w3.org/1999/xhtml");
+var XUL = Namespace("xul", "http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul");
+var NS = Namespace("dactyl", "http://vimperator.org/namespaces/liberator");
 default xml namespace = XHTML;
 
 memoize(this, "Commands", function () {
@@ -28,7 +28,7 @@ memoize(this, "Commands", function () {
     return obj.Commands;
 });
 
-const FailedAssertion = Class("FailedAssertion", ErrorBase);
+var FailedAssertion = Class("FailedAssertion", ErrorBase);
 
 function wrapCallback(fn)
     fn.wrapper = function wrappedCallback () {
@@ -41,7 +41,7 @@ function wrapCallback(fn)
         }
     }
 
-const Util = Module("Util", XPCOM([Ci.nsIObserver, Ci.nsISupportsWeakReference]), {
+var Util = Module("Util", XPCOM([Ci.nsIObserver, Ci.nsISupportsWeakReference]), {
     init: function () {
         this.Array = array;
 
@@ -920,13 +920,16 @@ const Util = Module("Util", XPCOM([Ci.nsIObserver, Ci.nsISupportsWeakReference])
             services.observer.removeObserver(this, "dactyl-rehash");
 
             util.dump("dactyl: util: observe: dactyl-rehash");
-            for (let module in values(defineModule.modules)) {
-                util.dump("dactyl: util: init(" + module + ")");
-                if (module.reinit)
-                    module.reinit();
-                else
-                    module.init();
-            }
+            if (true)
+                JSMLoader.purge();
+            else
+                for (let module in values(defineModule.modules)) {
+                    util.dump("dactyl: util: init(" + module + ")");
+                    if (module.reinit)
+                        module.reinit();
+                    else
+                        module.init();
+                }
         },
         "toplevel-window-ready": function (window, data) {
             window.addEventListener("DOMContentLoaded", wrapCallback(function listener(event) {
@@ -1427,7 +1430,7 @@ const Util = Module("Util", XPCOM([Ci.nsIObserver, Ci.nsISupportsWeakReference])
  * Math utility methods.
  * @singleton
  */
-const GlobalMath = Math;
+var GlobalMath = Math;
 var Math = update(Object.create(GlobalMath), {
     /**
      * Returns the specified *value* constrained to the range *min* - *max*.