js/src/jsinttypes.h

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* ***** BEGIN LICENSE BLOCK *****
   3  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
   4  *
   5  * The contents of this file are subject to the Mozilla Public License Version
   6  * 1.1 (the "License"); you may not use this file except in compliance with
   7  * the License. You may obtain a copy of the License at
   8  * http://www.mozilla.org/MPL/
   9  *
  10  * Software distributed under the License is distributed on an "AS IS" basis,
  11  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
  12  * for the specific language governing rights and limitations under the
  13  * License.
  14  *
  15  * The Original Code is Mozilla SpiderMonkey JavaScript 1.9 code, released
  16  * May 28, 2008.
  17  *
  18  * The Initial Developer of the Original Code is
  19  *   Jim Blandy <jimb@mozilla.org>
  20  * Portions created by the Initial Developer are Copyright (C) 2009
  21  * the Initial Developer. All Rights Reserved.
  22  *
  23  * Alternatively, the contents of this file may be used under the terms of
  24  * either of the GNU General Public License Version 2 or later (the "GPL"),
  25  * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
  26  * in which case the provisions of the GPL or the LGPL are applicable instead
  27  * of those above. If you wish to allow use of your version of this file only
  28  * under the terms of either the GPL or the LGPL, and not to allow others to
  29  * use your version of this file under the terms of the MPL, indicate your
  30  * decision by deleting the provisions above and replace them with the notice
  31  * and other provisions required by the GPL or the LGPL. If you do not delete
  32  * the provisions above, a recipient may use your version of this file under
  33  * the terms of any one of the MPL, the GPL or the LGPL.
  34  *
  35  * ***** END LICENSE BLOCK ***** */
  36
  37 #ifndef jsinttypes_h___
  38 #define jsinttypes_h___
  39
  40 #include "js-config.h"
  41
  42 /*
  43  * Types:
  44  *   JSInt<N>, JSUint<N> (for <N> = 8, 16, 32, and 64)
  45  *   JSIntPtr, JSUIntPtr
  46  *
  47  * JSInt<N> and JSUint<N> are signed and unsigned types known to be
  48  * <N> bits long.  Note that neither JSInt8 nor JSUInt8 is necessarily
  49  * equivalent to a plain "char".
  50  *
  51  * JSIntPtr and JSUintPtr are signed and unsigned types capable of
  52  * holding an object pointer.
  53  *
  54  * Use these types in public SpiderMonkey header files, not the
  55  * corresponding types from the C standard <stdint.h> header.  Windows
  56  * doesn't support <stdint.h>, and Microsoft says it has no plans to
  57  * do so in the future; this means that projects that embed
  58  * SpiderMonkey often take matters into their own hands and define the
  59  * standard types themselves.  If we define them in our public
  60  * headers, our definitions may conflict with embedders' (see bug
  61  * 479258).  The JS* types are in our namespace, and can be used
  62  * without troubling anyone.
  63  *
  64  * Internal SpiderMonkey code wishing to use the type names ISO C
  65  * defines in the standard header <stdint.h> can #include
  66  * "jsstdint.h", which provides those types regardless of whether
  67  * <stdint.h> itself is available.
  68  */
  69
  70 #if defined(JS_HAVE_STDINT_H)
  71
  72 #include <stdint.h>
  73
  74 typedef int8_t   JSInt8;
  75 typedef int16_t  JSInt16;
  76 typedef int32_t  JSInt32;
  77 typedef int64_t  JSInt64;
  78 typedef intptr_t JSIntPtr;
  79
  80 typedef uint8_t   JSUint8;
  81 typedef uint16_t  JSUint16;
  82 typedef uint32_t  JSUint32;
  83 typedef uint64_t  JSUint64;
  84 typedef uintptr_t JSUintPtr;
  85
  86 #else
  87
  88 #if defined(JS_HAVE___INTN)
  89
  90 typedef __int8  JSInt8;
  91 typedef __int16 JSInt16;
  92 typedef __int32 JSInt32;
  93 typedef __int64 JSInt64;
  94
  95 typedef unsigned __int8 JSUint8;
  96 typedef unsigned __int16 JSUint16;
  97 typedef unsigned __int32 JSUint32;
  98 typedef unsigned __int64 JSUint64;
  99
 100 #elif defined(JS_INT8_TYPE)
 101
 102 typedef signed JS_INT8_TYPE   JSInt8;
 103 typedef signed JS_INT16_TYPE  JSInt16;
 104 typedef signed JS_INT32_TYPE  JSInt32;
 105 typedef signed JS_INT64_TYPE  JSInt64;
 106
 107 typedef unsigned JS_INT8_TYPE   JSUint8;
 108 typedef unsigned JS_INT16_TYPE  JSUint16;
 109 typedef unsigned JS_INT32_TYPE  JSUint32;
 110 typedef unsigned JS_INT64_TYPE  JSUint64;
 111
 112 #else
 113 #error "couldn't find exact-width integer types"
 114 #endif
 115
 116 /* Microsoft Visual C/C++ defines intptr_t and uintptr_t in <stddef.h>.  */
 117 #if defined(JS_STDDEF_H_HAS_INTPTR_T)
 118 #include <stddef.h>
 119 typedef intptr_t JSIntPtr;
 120 typedef uintptr_t JSUintPtr;
 121
 122 /* Windows Mobile defines intptr_t and uintptr_t in <crtdefs.h>.  Why not?  */
 123 #elif defined(JS_CRTDEFS_H_HAS_INTPTR_T)
 124 #include <crtdefs.h>
 125 typedef intptr_t JSIntPtr;
 126 typedef uintptr_t JSUintPtr;
 127
 128 /* Failing that, the configure script will have found something.  */
 129 #elif defined(JS_INTPTR_TYPE)
 130 typedef signed   JS_INTPTR_TYPE JSIntPtr;
 131 typedef unsigned JS_INTPTR_TYPE JSUintPtr;
 132
 133 #else
 134 #error "couldn't find pointer-sized integer types"
 135 #endif
 136
 137 #endif /* JS_HAVE_STDINT_H */
 138
 139 #endif /* jsinttypes_h___ */