pjs/mfbt/StandardInteger.h

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
* vim: set ts=8 sw=4 et tw=99 ft=cpp:
*
* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at:
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Mozilla Code.
*
* The Initial Developer of the Original Code is
* The Mozilla Foundation
* Portions created by the Initial Developer are Copyright (C) 2011
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Jeff Walden <jwalden+code@mit.edu> (original author)
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
/* Implements the C99 <stdint.h> interface for C and C++ code. */
#ifndef mozilla_StandardInteger_h_
#define mozilla_StandardInteger_h_
/*
* The C99 standard header <stdint.h> exposes typedefs for common fixed-width
* integer types. It would be feasible to simply #include <stdint.h>, but
* MSVC++ versions prior to 2010 don't provide <stdint.h>. We could solve this
* by reimplementing <stdint.h> for MSVC++ 2008 and earlier. But then we reach
* a second problem: our custom <stdint.h> might conflict with a <stdint.h>
* defined by an embedder already looking to work around the MSVC++ <stdint.h>
* absence.
*
* We address these issues in this manner:
*
* 1. If the preprocessor macro MOZ_CUSTOM_STDINT_H is defined to a path to a
* custom <stdint.h> implementation, we will #include it. Embedders using
* a custom <stdint.h> must define this macro to an implementation that
* will work with their embedding.
* 2. Otherwise, if we are compiling with a an MSVC++ version without
* <stdint.h>, #include our custom <stdint.h> reimplementation.
* 3. Otherwise, #include the standard <stdint.h> provided by the compiler.
*
* Note that we can't call this file "stdint.h" or something case-insensitively
* equal to "stdint.h" because then MSVC (and other compilers on
* case-insensitive file systems) will include this file, rather than the system
* stdint.h, when we ask for <stdint.h> below.
*/
#if defined(MOZ_CUSTOM_STDINT_H)
# include MOZ_CUSTOM_STDINT_H
#elif defined(_MSC_VER) && _MSC_VER < 1600
# include "mozilla/MSStdInt.h"
#else
# include <stdint.h>
#endif
#endif /* mozilla_StandardInteger_h_ */