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On systems that don't have <stdint.h> (i.e., Microsoft, which is tragically underfunded and cannot spare the resources necessary to provide and support this header: http://tinyurl.com/absoh8), SpiderMonkey header files should not introduce definitions for these types, as doing so may conflict with client code's attempts to provide its own definitions for these types. Instead, have jstypes.h define JS{Int,Uint}{8,16,32,64,Ptr} types based on configure's results, and make jsstdint.h into an uninstalled header for use within SpiderMonkey that does whatever is necessary to get definitions for the <stdint.h> types. The changes to make the appropriate SpiderMonkey .cpp files #include "jsstdint.h" explicitly are in a separate patch, for ease of review.
140 lines
4.6 KiB
C
140 lines
4.6 KiB
C
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Mozilla SpiderMonkey JavaScript 1.9 code, released
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* May 28, 2008.
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*
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* The Initial Developer of the Original Code is
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* Jim Blandy <jimb@mozilla.org>
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* Portions created by the Initial Developer are Copyright (C) 2009
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* the Initial Developer. All Rights Reserved.
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef jsinttypes_h___
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#define jsinttypes_h___
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#include "js-config.h"
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/*
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* Types:
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* JSInt<N>, JSUint<N> (for <N> = 8, 16, 32, and 64)
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* JSIntPtr, JSUIntPtr
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*
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* JSInt<N> and JSUint<N> are signed and unsigned types known to be
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* <N> bits long. Note that neither JSInt8 nor JSUInt8 is necessarily
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* equivalent to a plain "char".
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*
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* JSIntPtr and JSUintPtr are signed and unsigned types capable of
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* holding an object pointer.
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*
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* Use these types in public SpiderMonkey header files, not the
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* corresponding types from the C standard <stdint.h> header. Windows
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* doesn't support <stdint.h>, and Microsoft says it has no plans to
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* do so in the future; this means that projects that embed
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* SpiderMonkey often take matters into their own hands and define the
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* standard types themselves. If we define them in our public
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* headers, our definitions may conflict with embedders' (see bug
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* 479258). The JS* types are in our namespace, and can be used
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* without troubling anyone.
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*
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* Internal SpiderMonkey code wishing to use the type names ISO C
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* defines in the standard header <stdint.h> can #include
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* "jsstdint.h", which provides those types regardless of whether
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* <stdint.h> itself is available.
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*/
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#if defined(JS_HAVE_STDINT_H)
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#include <stdint.h>
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typedef int8_t JSInt8;
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typedef int16_t JSInt16;
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typedef int32_t JSInt32;
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typedef int64_t JSInt64;
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typedef intptr_t JSIntPtr;
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typedef uint8_t JSUint8;
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typedef uint16_t JSUint16;
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typedef uint32_t JSUint32;
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typedef uint64_t JSUint64;
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typedef uintptr_t JSUintPtr;
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#else
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#if defined(JS_HAVE___INTN)
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typedef __int8 JSInt8;
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typedef __int16 JSInt16;
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typedef __int32 JSInt32;
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typedef __int64 JSInt64;
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typedef unsigned __int8 JSUint8;
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typedef unsigned __int16 JSUint16;
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typedef unsigned __int32 JSUint32;
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typedef unsigned __int64 JSUint64;
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#elif defined(JS_INT8_TYPE)
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typedef signed JS_INT8_TYPE JSInt8;
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typedef signed JS_INT16_TYPE JSInt16;
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typedef signed JS_INT32_TYPE JSInt32;
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typedef signed JS_INT64_TYPE JSInt64;
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typedef unsigned JS_INT8_TYPE JSUint8;
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typedef unsigned JS_INT16_TYPE JSUint16;
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typedef unsigned JS_INT32_TYPE JSUint32;
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typedef unsigned JS_INT64_TYPE JSUint64;
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#else
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#error "couldn't find exact-width integer types"
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#endif
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/* Microsoft Visual C/C++ defines intptr_t and uintptr_t in <stddef.h>. */
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#if defined(JS_STDDEF_H_HAS_INTPTR_T)
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#include <stddef.h>
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typedef intptr_t JSIntPtr;
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typedef uintptr_t JSUintPtr;
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/* Windows Mobile defines intptr_t and uintptr_t in <crtdefs.h>. Why not? */
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#elif defined(JS_CRTDEFS_H_HAS_INTPTR_T)
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#include <crtdefs.h>
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typedef intptr_t JSIntPtr;
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typedef uintptr_t JSUintPtr;
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/* Failing that, the configure script will have found something. */
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#elif defined(JS_INTPTR_TYPE)
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typedef signed JS_INTPTR_TYPE JSIntPtr;
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typedef unsigned JS_INTPTR_TYPE JSUintPtr;
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#else
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#error "couldn't find pointer-sized integer types"
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#endif
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#endif /* JS_HAVE_STDINT_H */
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#endif /* jsinttypes_h___ */
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