зеркало из https://github.com/mozilla/gecko-dev.git
100 строки
2.7 KiB
JavaScript
100 строки
2.7 KiB
JavaScript
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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"use strict";
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const { extend } = require("devtools/shared/extend");
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const { ObjectActorProto } = require("devtools/server/actors/object");
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const protocol = require("devtools/shared/protocol");
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const { ActorClassWithSpec } = protocol;
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const { objectSpec } = require("devtools/shared/specs/object");
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/**
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* Protocol.js expects only the prototype object, and does not maintain the prototype
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* chain when it constructs the ActorClass. For this reason we are using extend to
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* maintain the properties of ObjectActorProto.
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**/
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const proto = extend({}, ObjectActorProto);
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Object.assign(proto, {
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typeName: "pausedobj",
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/**
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* Creates a pause-scoped actor for the specified object.
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* @see ObjectActor
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*/
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initialize: function(obj, hooks, conn) {
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ObjectActorProto.initialize.call(this, obj, hooks, conn);
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this.hooks.promote = hooks.promote;
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this.hooks.isThreadLifetimePool = hooks.isThreadLifetimePool;
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},
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isPaused: function() {
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return this.threadActor ? this.threadActor.state === "paused" : true;
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},
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withPaused: function(method) {
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return function() {
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if (this.isPaused()) {
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return method.apply(this, arguments);
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}
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return {
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error: "wrongState",
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message:
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this.constructor.name +
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" actors can only be accessed while the thread is paused.",
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};
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};
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},
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});
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const guardWithPaused = [
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"decompile",
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"displayString",
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"ownPropertyNames",
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"parameterNames",
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"property",
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"prototype",
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"prototypeAndProperties",
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"scope",
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];
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guardWithPaused.forEach(f => {
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proto[f] = proto.withPaused(ObjectActorProto[f]);
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});
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Object.assign(proto, {
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/**
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* Handle a protocol request to promote a pause-lifetime grip to a
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* thread-lifetime grip.
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*
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* @param request object
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* The protocol request object.
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*/
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threadGrip: proto.withPaused(function(request) {
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this.hooks.promote();
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return {};
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}),
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/**
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* Handle a protocol request to release a thread-lifetime grip.
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*
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* @param request object
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* The protocol request object.
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*/
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destroy: proto.withPaused(function(request) {
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if (this.hooks.isThreadLifetimePool()) {
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return {
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error: "notReleasable",
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message: "Only thread-lifetime actors can be released.",
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};
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}
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return protocol.Actor.prototype.destroy.call(this);
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}),
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});
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exports.PauseScopedObjectActor = ActorClassWithSpec(objectSpec, proto);
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// ActorClassWithSpec(objectSpec, {...ObjectActorProto, ...proto});
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