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01e9c7d987
MozReview-Commit-ID: 1nguzarA57L --HG-- extra : rebase_source : 0e9686790c15cf1e1e0ec6e8fddfe6cd441ef070 extra : source : 49d7963e43d890488ad0ad9b1a592c57bdc2be49
149 lines
3.7 KiB
JavaScript
149 lines
3.7 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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var {DebuggerServer} = require("devtools/server/main");
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var promise = require("promise");
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var {Class} = require("sdk/core/heritage");
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var protocol = require("devtools/shared/protocol");
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var {method, Arg, RetVal} = protocol;
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exports.LongStringActor = protocol.ActorClass({
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typeName: "longstractor",
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initialize: function (conn, str) {
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protocol.Actor.prototype.initialize.call(this, conn);
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this.str = str;
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this.short = (this.str.length < DebuggerServer.LONG_STRING_LENGTH);
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},
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destroy: function () {
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this.str = null;
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protocol.Actor.prototype.destroy.call(this);
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},
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form: function () {
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if (this.short) {
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return this.str;
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}
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return {
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type: "longString",
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actor: this.actorID,
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length: this.str.length,
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initial: this.str.substring(0, DebuggerServer.LONG_STRING_INITIAL_LENGTH)
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};
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},
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substring: method(function (start, end) {
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return promise.resolve(this.str.substring(start, end));
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}, {
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request: {
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start: Arg(0),
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end: Arg(1)
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},
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response: { substring: RetVal() },
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}),
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release: method(function () { }, { release: true })
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});
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/**
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* When a LongString on the server is short enough to be passed
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* as a full string, the client will get a ShortLongString instead of
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* a LongStringFront. Its API should match.
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*
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* I'm very proud of this name.
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*/
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exports.ShortLongString = Class({
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initialize: function (str) {
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this.str = str;
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},
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get length() {
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return this.str.length;
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},
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get initial() {
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return this.str;
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},
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string: function () {
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return promise.resolve(this.str);
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},
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substring: function (start, end) {
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return promise.resolve(this.str.substring(start, end));
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},
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release: function () {
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this.str = null;
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return promise.resolve(undefined);
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}
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});
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exports.LongStringFront = protocol.FrontClass(exports.LongStringActor, {
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initialize: function (client) {
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protocol.Front.prototype.initialize.call(this, client);
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},
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destroy: function () {
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this.initial = null;
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this.length = null;
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this.strPromise = null;
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protocol.Front.prototype.destroy.call(this);
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},
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form: function (form) {
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this.actorID = form.actor;
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this.initial = form.initial;
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this.length = form.length;
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},
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string: function () {
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if (!this.strPromise) {
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let promiseRest = (thusFar) => {
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if (thusFar.length === this.length) {
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return promise.resolve(thusFar);
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}
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return this.substring(thusFar.length,
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thusFar.length + DebuggerServer.LONG_STRING_READ_LENGTH)
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.then((next) => promiseRest(thusFar + next));
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};
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this.strPromise = promiseRest(this.initial);
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}
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return this.strPromise;
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}
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});
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// The long string actor needs some custom marshalling, because it is sometimes
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// returned as a primitive rather than a complete form.
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var stringActorType = protocol.types.getType("longstractor");
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protocol.types.addType("longstring", {
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_actor: true,
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write: (value, context, detail) => {
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if (!(context instanceof protocol.Actor)) {
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throw Error("Passing a longstring as an argument isn't supported.");
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}
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if (value.short) {
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return value.str;
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}
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return stringActorType.write(value, context, detail);
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},
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read: (value, context, detail) => {
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if (context instanceof protocol.Actor) {
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throw Error("Passing a longstring as an argument isn't supported.");
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}
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if (typeof (value) === "string") {
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return exports.ShortLongString(value);
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}
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return stringActorType.read(value, context, detail);
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}
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});
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