gecko-dev/js/src/jsinttypes.h

140 строки
4.6 KiB
C

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** 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 SpiderMonkey JavaScript 1.9 code, released
* May 28, 2008.
*
* The Initial Developer of the Original Code is
* Jim Blandy <jimb@mozilla.org>
* Portions created by the Initial Developer are Copyright (C) 2009
* the Initial Developer. All Rights Reserved.
*
* Alternatively, the contents of this file may be used under the terms of
* either of 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 ***** */
#ifndef jsinttypes_h___
#define jsinttypes_h___
#include "js-config.h"
/*
* Types:
* JSInt<N>, JSUint<N> (for <N> = 8, 16, 32, and 64)
* JSIntPtr, JSUIntPtr
*
* JSInt<N> and JSUint<N> are signed and unsigned types known to be
* <N> bits long. Note that neither JSInt8 nor JSUInt8 is necessarily
* equivalent to a plain "char".
*
* JSIntPtr and JSUintPtr are signed and unsigned types capable of
* holding an object pointer.
*
* Use these types in public SpiderMonkey header files, not the
* corresponding types from the C standard <stdint.h> header. Windows
* doesn't support <stdint.h>, and Microsoft says it has no plans to
* do so in the future; this means that projects that embed
* SpiderMonkey often take matters into their own hands and define the
* standard types themselves. If we define them in our public
* headers, our definitions may conflict with embedders' (see bug
* 479258). The JS* types are in our namespace, and can be used
* without troubling anyone.
*
* Internal SpiderMonkey code wishing to use the type names ISO C
* defines in the standard header <stdint.h> can #include
* "jsstdint.h", which provides those types regardless of whether
* <stdint.h> itself is available.
*/
#if defined(JS_HAVE_STDINT_H)
#include <stdint.h>
typedef int8_t JSInt8;
typedef int16_t JSInt16;
typedef int32_t JSInt32;
typedef int64_t JSInt64;
typedef intptr_t JSIntPtr;
typedef uint8_t JSUint8;
typedef uint16_t JSUint16;
typedef uint32_t JSUint32;
typedef uint64_t JSUint64;
typedef uintptr_t JSUintPtr;
#else
#if defined(JS_HAVE___INTN)
typedef __int8 JSInt8;
typedef __int16 JSInt16;
typedef __int32 JSInt32;
typedef __int64 JSInt64;
typedef unsigned __int8 JSUint8;
typedef unsigned __int16 JSUint16;
typedef unsigned __int32 JSUint32;
typedef unsigned __int64 JSUint64;
#elif defined(JS_INT8_TYPE)
typedef signed JS_INT8_TYPE JSInt8;
typedef signed JS_INT16_TYPE JSInt16;
typedef signed JS_INT32_TYPE JSInt32;
typedef signed JS_INT64_TYPE JSInt64;
typedef unsigned JS_INT8_TYPE JSUint8;
typedef unsigned JS_INT16_TYPE JSUint16;
typedef unsigned JS_INT32_TYPE JSUint32;
typedef unsigned JS_INT64_TYPE JSUint64;
#else
#error "couldn't find exact-width integer types"
#endif
/* Microsoft Visual C/C++ defines intptr_t and uintptr_t in <stddef.h>. */
#if defined(JS_STDDEF_H_HAS_INTPTR_T)
#include <stddef.h>
typedef intptr_t JSIntPtr;
typedef uintptr_t JSUintPtr;
/* Windows Mobile defines intptr_t and uintptr_t in <crtdefs.h>. Why not? */
#elif defined(JS_CRTDEFS_H_HAS_INTPTR_T)
#include <crtdefs.h>
typedef intptr_t JSIntPtr;
typedef uintptr_t JSUintPtr;
/* Failing that, the configure script will have found something. */
#elif defined(JS_INTPTR_TYPE)
typedef signed JS_INTPTR_TYPE JSIntPtr;
typedef unsigned JS_INTPTR_TYPE JSUintPtr;
#else
#error "couldn't find pointer-sized integer types"
#endif
#endif /* JS_HAVE_STDINT_H */
#endif /* jsinttypes_h___ */