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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";
const { ObjectActor } = require("resource://devtools/server/actors/object.js");
class PauseScopedObjectActor extends ObjectActor {
/**
* Creates a pause-scoped actor for the specified object.
* @see ObjectActor
*/
constructor(obj, hooks, conn) {
super(obj, hooks, conn);
this.hooks.promote = hooks.promote;
this.hooks.isThreadLifetimePool = hooks.isThreadLifetimePool;
const guardWithPaused = [
"decompile",
"displayString",
"ownPropertyNames",
"parameterNames",
"property",
"prototype",
"prototypeAndProperties",
"scope",
];
for (const methodName of guardWithPaused) {
this[methodName] = this.withPaused(this[methodName]);
}
/**
* Handle a protocol request to promote a pause-lifetime grip to a
* thread-lifetime grip.
*/
this.threadGrip = this.withPaused(function () {
this.hooks.promote();
return {};
});
}
isPaused() {
return this.threadActor ? this.threadActor.state === "paused" : true;
}
withPaused(method) {
return function () {
if (this.isPaused()) {
return method.apply(this, arguments);
}
return {
error: "wrongState",
message:
this.constructor.name +
" actors can only be accessed while the thread is paused.",
};
};
}
/**
* Handle a protocol request to release a thread-lifetime grip.
*/
destroy() {
if (this.hooks.isThreadLifetimePool()) {
return {
error: "notReleasable",
message: "Only thread-lifetime actors can be released.",
};
}
super.destroy();
return null;
}
}
exports.PauseScopedObjectActor = PauseScopedObjectActor;
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