gecko-dev/devtools/shared/fronts/string.js

46 строки
1.4 KiB
JavaScript

/* 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 {DebuggerServer} = require("devtools/server/main");
const promise = require("promise");
const {longStringSpec, SimpleStringFront} = require("devtools/shared/specs/string");
const { FrontClassWithSpec, registerFront } = require("devtools/shared/protocol");
class LongStringFront extends FrontClassWithSpec(longStringSpec) {
destroy() {
this.initial = null;
this.length = null;
this.strPromise = null;
super.destroy();
}
form(form) {
this.actorID = form.actor;
this.initial = form.initial;
this.length = form.length;
}
string() {
if (!this.strPromise) {
const promiseRest = (thusFar) => {
if (thusFar.length === this.length) {
return promise.resolve(thusFar);
}
return this.substring(thusFar.length,
thusFar.length + DebuggerServer.LONG_STRING_READ_LENGTH)
.then((next) => promiseRest(thusFar + next));
};
this.strPromise = promiseRest(this.initial);
}
return this.strPromise;
}
}
exports.LongStringFront = LongStringFront;
registerFront(LongStringFront);
exports.SimpleStringFront = SimpleStringFront;
registerFront(SimpleStringFront);