/* 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 "nsHtml5TreeOpStage.h"

using namespace mozilla;

nsHtml5TreeOpStage::nsHtml5TreeOpStage() : mMutex("nsHtml5TreeOpStage mutex") {}

nsHtml5TreeOpStage::~nsHtml5TreeOpStage() = default;

bool nsHtml5TreeOpStage::MoveOpsFrom(nsTArray<nsHtml5TreeOperation>& aOpQueue) {
  mozilla::MutexAutoLock autoLock(mMutex);
  return !!mOpQueue.AppendElements(std::move(aOpQueue), mozilla::fallible_t());
}

[[nodiscard]] bool nsHtml5TreeOpStage::MoveOpsAndSpeculativeLoadsTo(
    nsTArray<nsHtml5TreeOperation>& aOpQueue,
    nsTArray<nsHtml5SpeculativeLoad>& aSpeculativeLoadQueue) {
  mozilla::MutexAutoLock autoLock(mMutex);
  if (!aOpQueue.AppendElements(std::move(mOpQueue), mozilla::fallible_t())) {
    return false;
  };
  aSpeculativeLoadQueue.AppendElements(std::move(mSpeculativeLoadQueue));
  return true;
}

[[nodiscard]] bool nsHtml5TreeOpStage::MoveOpsTo(
    nsTArray<nsHtml5TreeOperation>& aOpQueue) {
  mozilla::MutexAutoLock autoLock(mMutex);
  return !!aOpQueue.AppendElements(std::move(mOpQueue), mozilla::fallible_t());
}

void nsHtml5TreeOpStage::MoveSpeculativeLoadsFrom(
    nsTArray<nsHtml5SpeculativeLoad>& aSpeculativeLoadQueue) {
  mozilla::MutexAutoLock autoLock(mMutex);
  mSpeculativeLoadQueue.AppendElements(std::move(aSpeculativeLoadQueue));
}

void nsHtml5TreeOpStage::MoveSpeculativeLoadsTo(
    nsTArray<nsHtml5SpeculativeLoad>& aSpeculativeLoadQueue) {
  mozilla::MutexAutoLock autoLock(mMutex);
  aSpeculativeLoadQueue.AppendElements(std::move(mSpeculativeLoadQueue));
}

#ifdef DEBUG
void nsHtml5TreeOpStage::AssertEmpty() {
  mozilla::MutexAutoLock autoLock(mMutex);
  MOZ_ASSERT(mOpQueue.IsEmpty(), "The stage was supposed to be empty.");
}
#endif