js/ductwork/debugger/JSDebugger.cpp
author shindli <shindli@mozilla.com>
Thu, 06 Sep 2018 22:12:44 +0300
changeset 490848 8be67ab3d7d34909c6e52b7e6984b6ff84cc470a
parent 490847 d4ae1994c20c1b0fb9051862606f94e7854b86f2
child 490856 38ed8871759e1f1e07fe1684ead6ca34413a6842
permissions -rw-r--r--
Backed out changeset d4ae1994c20c (bug 1489147) for bustages in JSDebugger.cpp on a CLOSED TREE

/* -*-  Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2; -*- */
/* 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/. */

#include "JSDebugger.h"
#include "nsIXPConnect.h"
#include "nsThreadUtils.h"
#include "jsapi.h"
#include "jsfriendapi.h"
#include "js/Wrapper.h"
#include "mozilla/ModuleUtils.h"
#include "nsServiceManagerUtils.h"
#include "nsMemory.h"

#define JSDEBUGGER_CONTRACTID \
  "@mozilla.org/jsdebugger;1"

#define JSDEBUGGER_CID \
{ 0x0365cbd5, 0xd46e, 0x4e94, { 0xa3, 0x9f, 0x83, 0xb6, 0x3c, 0xd1, 0xa9, 0x63 } }

namespace mozilla {
namespace jsdebugger {

NS_GENERIC_FACTORY_CONSTRUCTOR(JSDebugger)

NS_IMPL_ISUPPORTS(JSDebugger, IJSDebugger)

JSDebugger::JSDebugger()
{
}

JSDebugger::~JSDebugger()
{
}

NS_IMETHODIMP
JSDebugger::AddClass(JS::Handle<JS::Value> global, JSContext* cx)
{
  nsresult rv;
  nsCOMPtr<nsIXPConnect> xpc = do_GetService(nsIXPConnect::GetCID(), &rv);

  if (!global.isObject()) {
    return NS_ERROR_INVALID_ARG;
  }

  JS::RootedObject obj(cx, &global.toObject());
  obj = js::UncheckedUnwrap(obj, /* stopAtWindowProxy = */ false);
  if (!obj) {
    return NS_ERROR_FAILURE;
  }

  if (!JS_IsGlobalObject(obj)) {
    return NS_ERROR_INVALID_ARG;
  }

  JSAutoRealm ar(cx, obj);
  if (!JS_DefineDebuggerObject(cx, obj)) {
    return NS_ERROR_FAILURE;
  }

  if (recordreplay::IsRecordingOrReplaying() || recordreplay::IsMiddleman()) {
    if (!recordreplay::DefineRecordReplayControlObject(cx, obj)) {
      return NS_ERROR_FAILURE;
    }
  } else {
    // Define an empty RecordReplayControl object, to avoid reference errors in
    // scripts that run in normal processes. DefineRecordReplayControlObject
    // can't be called in normal processes.
    JS::RootedObject staticObject(cx, JS_NewObject(cx, nullptr));
    if (!staticObject || !JS_DefineProperty(cx, obj, "RecordReplayControl", staticObject, 0)) {
      return NS_ERROR_FAILURE;
    }
  }

  return NS_OK;
}

} // namespace jsdebugger
} // namespace mozilla

NS_DEFINE_NAMED_CID(JSDEBUGGER_CID);

static const mozilla::Module::CIDEntry kJSDebuggerCIDs[] = {
  { &kJSDEBUGGER_CID, false, nullptr, mozilla::jsdebugger::JSDebuggerConstructor },
  { nullptr }
};

static const mozilla::Module::ContractIDEntry kJSDebuggerContracts[] = {
  { JSDEBUGGER_CONTRACTID, &kJSDEBUGGER_CID },
  { nullptr }
};

static const mozilla::Module kJSDebuggerModule = {
  mozilla::Module::kVersion,
  kJSDebuggerCIDs,
  kJSDebuggerContracts
};

NSMODULE_DEFN(jsdebugger) = &kJSDebuggerModule;