storage/mozStorageStatement.h
author Mike Hommey <mh+mozilla@glandium.org>
Thu, 13 Dec 2018 11:10:44 +0900
changeset 1785640 40ddda93d7fbd6c8cc1c2a514db42c7500a5c156
parent 1775196 6f3709b3878117466168c40affa7bca0b60cf75b
child 1975313 e1993a1f09ac53cd1a04fdf6a87f8cad8e44f73e
permissions -rw-r--r--
Revert bug 638149 and leave it to configure to set -dead_strip. r?build We're always setting -dead_strip on mac builds, per cross-mozconfig.common, we might as well not do that and revert bug 638149, which disabled adding -dead_strip with LTO: that is apparently not a problem anymore.

/* -*- 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/. */

#ifndef mozStorageStatement_h
#define mozStorageStatement_h

#include "nsAutoPtr.h"
#include "nsString.h"

#include "nsTArray.h"

#include "mozStorageBindingParamsArray.h"
#include "mozStorageStatementData.h"
#include "mozIStorageStatement.h"
#include "mozIStorageValueArray.h"
#include "StorageBaseStatementInternal.h"
#include "mozilla/Attributes.h"

struct sqlite3_stmt;

namespace mozilla {
namespace storage {
class StatementJSHelper;
class Connection;
class StatementParamsHolder;
class StatementRowHolder;

class Statement final : public mozIStorageStatement,
                        public mozIStorageValueArray,
                        public StorageBaseStatementInternal {
 public:
  NS_DECL_THREADSAFE_ISUPPORTS
  NS_DECL_MOZISTORAGESTATEMENT
  NS_DECL_MOZISTORAGEBASESTATEMENT
  NS_DECL_MOZISTORAGEBINDINGPARAMS
  // NS_DECL_MOZISTORAGEVALUEARRAY (methods in mozIStorageStatement)
  NS_DECL_STORAGEBASESTATEMENTINTERNAL

  Statement();

  /**
   * Initializes the object on aDBConnection by preparing the SQL statement
   * given by aSQLStatement.
   *
   * @param aDBConnection
   *        The Connection object this statement is associated with.
   * @param aNativeConnection
   *        The native Sqlite connection this statement is associated with.
   * @param aSQLStatement
   *        The SQL statement to prepare that this object will represent.
   */
  nsresult initialize(Connection *aDBConnection, sqlite3 *aNativeConnection,
                      const nsACString &aSQLStatement);

  /**
   * Obtains the native statement pointer.
   */
  inline sqlite3_stmt *nativeStatement() { return mDBStatement; }

  /**
   * Obtains and transfers ownership of the array of parameters that are bound
   * to this statment.  This can be null.
   */
  inline already_AddRefed<BindingParamsArray> bindingParamsArray() {
    return mParamsArray.forget();
  }

 private:
  ~Statement();

  sqlite3_stmt *mDBStatement;
  uint32_t mParamCount;
  uint32_t mResultColumnCount;
  nsTArray<nsCString> mColumnNames;
  bool mExecuting;

  /**
   * @return a pointer to the BindingParams object to use with our Bind*
   *         method.
   */
  mozIStorageBindingParams *getParams();

  /**
   * Holds the array of parameters to bind to this statement when we execute
   * it asynchronously.
   */
  RefPtr<BindingParamsArray> mParamsArray;

  /**
   * The following two members are only used with the JS helper.  They cache
   * the row and params objects.
   */
  nsMainThreadPtrHandle<StatementParamsHolder> mStatementParamsHolder;
  nsMainThreadPtrHandle<StatementRowHolder> mStatementRowHolder;

  /**
   * Internal version of finalize that allows us to tell it if it is being
   * called from the destructor so it can know not to dispatch events that
   * require a reference to us.
   *
   * @param aDestructing
   *        Is the destructor calling?
   */
  nsresult internalFinalize(bool aDestructing);

  friend class StatementJSHelper;
};

inline nsISupports *ToSupports(Statement *p) {
  return NS_ISUPPORTS_CAST(mozIStorageStatement *, p);
}

}  // namespace storage
}  // namespace mozilla

#endif  // mozStorageStatement_h