storage/mozStorageStatementRow.cpp
author alwu <alwu@mozilla.com>
Mon, 07 Jan 2019 19:57:48 +0000
changeset 512757 0e229bbdaae5c8fa9f83796c628a4fdf88f057ba
parent 508163 6f3709b3878117466168c40affa7bca0b60cf75b
permissions -rw-r--r--
Bug 1513039 - part5 : log warning when autoplay is blocked. r=cpearce,karlt Wrap 'nsContentUtils::ReportToConsole()' to reduce necessary input parameters and call it when we need to log error or warning message. Show the warning when autoplay is blocked. For web audio, this restores the console messages removed in part4 and also reports the same message when the AudioContext is blocked in the constructor. Differential Revision: https://phabricator.services.mozilla.com/D14330

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
 * vim: sw=2 ts=2 et lcs=trail\:.,tab\:>~ :
 * 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 "nsMemory.h"
#include "nsString.h"

#include "mozilla/dom/MozStorageStatementRowBinding.h"
#include "mozStorageStatementRow.h"
#include "mozStorageStatement.h"

#include "jsapi.h"

#include "xpc_make_class.h"

namespace mozilla {
namespace storage {

////////////////////////////////////////////////////////////////////////////////
//// StatementRow

NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(StatementRow, mWindow)

NS_INTERFACE_TABLE_HEAD(StatementRow)
  NS_WRAPPERCACHE_INTERFACE_TABLE_ENTRY
  NS_INTERFACE_TABLE(StatementRow, nsISupports)
  NS_INTERFACE_TABLE_TO_MAP_SEGUE_CYCLE_COLLECTION(StatementRow)
NS_INTERFACE_MAP_END

NS_IMPL_CYCLE_COLLECTING_ADDREF(StatementRow)
NS_IMPL_CYCLE_COLLECTING_RELEASE(StatementRow)

StatementRow::StatementRow(nsPIDOMWindowInner* aWindow, Statement* aStatement)
    : mWindow(aWindow), mStatement(aStatement) {}

JSObject* StatementRow::WrapObject(JSContext* aCx,
                                   JS::Handle<JSObject*> aGivenProto) {
  return dom::MozStorageStatementRow_Binding::Wrap(aCx, this, aGivenProto);
}

void StatementRow::NamedGetter(JSContext* aCx, const nsAString& aName,
                               bool& aFound,
                               JS::MutableHandle<JS::Value> aResult,
                               mozilla::ErrorResult& aRv) {
  if (!mStatement) {
    aRv.Throw(NS_ERROR_NOT_INITIALIZED);
    return;
  }

  nsCString name = NS_ConvertUTF16toUTF8(aName);

  uint32_t idx;
  {
    nsresult rv = mStatement->GetColumnIndex(name, &idx);
    if (NS_FAILED(rv)) {
      // It's highly likely that the name doesn't exist, so let the JS engine
      // check the prototype chain and throw if that doesn't have the property
      // either.
      aFound = false;
      return;
    }
  }

  int32_t type;
  aRv = mStatement->GetTypeOfIndex(idx, &type);
  if (aRv.Failed()) {
    return;
  }

  switch (type) {
    case mozIStorageValueArray::VALUE_TYPE_INTEGER:
    case mozIStorageValueArray::VALUE_TYPE_FLOAT: {
      double dval;
      aRv = mStatement->GetDouble(idx, &dval);
      if (aRv.Failed()) {
        return;
      }
      aResult.set(::JS_NumberValue(dval));
      break;
    }
    case mozIStorageValueArray::VALUE_TYPE_TEXT: {
      uint32_t bytes;
      const char16_t* sval = reinterpret_cast<const char16_t*>(
          static_cast<mozIStorageStatement*>(mStatement)
              ->AsSharedWString(idx, &bytes));
      JSString* str = ::JS_NewUCStringCopyN(aCx, sval, bytes / 2);
      if (!str) {
        aRv.Throw(NS_ERROR_UNEXPECTED);
        return;
      }
      aResult.setString(str);
      break;
    }
    case mozIStorageValueArray::VALUE_TYPE_BLOB: {
      uint32_t length;
      const uint8_t* blob = static_cast<mozIStorageStatement*>(mStatement)
                                ->AsSharedBlob(idx, &length);
      JS::Rooted<JSObject*> obj(aCx, ::JS_NewArrayObject(aCx, length));
      if (!obj) {
        aRv.Throw(NS_ERROR_UNEXPECTED);
        return;
      }
      aResult.setObject(*obj);

      // Copy the blob over to the JS array.
      for (uint32_t i = 0; i < length; i++) {
        if (!::JS_DefineElement(aCx, obj, i, blob[i], JSPROP_ENUMERATE)) {
          aRv.Throw(NS_ERROR_UNEXPECTED);
          return;
        }
      }
      break;
    }
    case mozIStorageValueArray::VALUE_TYPE_NULL:
      aResult.setNull();
      break;
    default:
      NS_ERROR("unknown column type returned, what's going on?");
      break;
  }
  aFound = true;
}

void StatementRow::GetSupportedNames(nsTArray<nsString>& aNames) {
  if (!mStatement) {
    return;
  }

  uint32_t columnCount;
  nsresult rv = mStatement->GetColumnCount(&columnCount);
  if (NS_WARN_IF(NS_FAILED(rv))) {
    return;
  }

  for (uint32_t i = 0; i < columnCount; i++) {
    nsAutoCString name;
    nsresult rv = mStatement->GetColumnName(i, name);
    if (NS_WARN_IF(NS_FAILED(rv))) {
      return;
    }
    aNames.AppendElement(NS_ConvertUTF8toUTF16(name));
  }
}

}  // namespace storage
}  // namespace mozilla