зеркало из https://github.com/mozilla/pjs.git
507 строки
17 KiB
C
507 строки
17 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 Communicator client code, released
|
|
* March 31, 1998.
|
|
*
|
|
* The Initial Developer of the Original Code is
|
|
* Netscape Communications Corporation.
|
|
* Portions created by the Initial Developer are Copyright (C) 1998
|
|
* the Initial Developer. All Rights Reserved.
|
|
*
|
|
* Contributor(s):
|
|
* IBM Corp.
|
|
*
|
|
* 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 ***** */
|
|
|
|
/*
|
|
** File: jstypes.h
|
|
** Description: Definitions of NSPR's basic types
|
|
**
|
|
** Prototypes and macros used to make up for deficiencies in ANSI environments
|
|
** that we have found.
|
|
**
|
|
** Since we do not wrap <stdlib.h> and all the other standard headers, authors
|
|
** of portable code will not know in general that they need these definitions.
|
|
** Instead of requiring these authors to find the dependent uses in their code
|
|
** and take the following steps only in those C files, we take steps once here
|
|
** for all C files.
|
|
**/
|
|
|
|
#ifndef jstypes_h___
|
|
#define jstypes_h___
|
|
|
|
#include <stddef.h>
|
|
#include "js-config.h"
|
|
|
|
/***********************************************************************
|
|
** MACROS: JS_EXTERN_API
|
|
** JS_EXPORT_API
|
|
** DESCRIPTION:
|
|
** These are only for externally visible routines and globals. For
|
|
** internal routines, just use "extern" for type checking and that
|
|
** will not export internal cross-file or forward-declared symbols.
|
|
** Define a macro for declaring procedures return types. We use this to
|
|
** deal with windoze specific type hackery for DLL definitions. Use
|
|
** JS_EXTERN_API when the prototype for the method is declared. Use
|
|
** JS_EXPORT_API for the implementation of the method.
|
|
**
|
|
** Example:
|
|
** in dowhim.h
|
|
** JS_EXTERN_API( void ) DoWhatIMean( void );
|
|
** in dowhim.c
|
|
** JS_EXPORT_API( void ) DoWhatIMean( void ) { return; }
|
|
**
|
|
**
|
|
***********************************************************************/
|
|
|
|
#define DEFINE_LOCAL_CLASS_OF_STATIC_FUNCTION(Name) class Name
|
|
|
|
#ifdef WIN32
|
|
|
|
/* These also work for __MWERKS__ */
|
|
# define JS_EXTERN_API(__type) extern __declspec(dllexport) __type
|
|
# define JS_EXPORT_API(__type) __declspec(dllexport) __type
|
|
# define JS_EXTERN_DATA(__type) extern __declspec(dllexport) __type
|
|
# define JS_EXPORT_DATA(__type) __declspec(dllexport) __type
|
|
|
|
#elif defined(XP_OS2) && defined(__declspec)
|
|
|
|
# define JS_EXTERN_API(__type) extern __declspec(dllexport) __type
|
|
# define JS_EXPORT_API(__type) __declspec(dllexport) __type
|
|
# define JS_EXTERN_DATA(__type) extern __declspec(dllexport) __type
|
|
# define JS_EXPORT_DATA(__type) __declspec(dllexport) __type
|
|
|
|
#elif defined(__SYMBIAN32__)
|
|
|
|
# define JS_EXTERN_API(__type) extern EXPORT_C __type
|
|
# define JS_EXPORT_API(__type) EXPORT_C __type
|
|
# define JS_EXTERN_DATA(__type) extern EXPORT_C __type
|
|
# define JS_EXPORT_DATA(__type) EXPORT_C __type
|
|
|
|
#else /* Unix */
|
|
|
|
# ifdef HAVE_VISIBILITY_ATTRIBUTE
|
|
# define JS_EXTERNAL_VIS __attribute__((visibility ("default")))
|
|
# if defined(__GNUC__) && __GNUC__ <= 4 && __GNUC_MINOR__ < 5
|
|
/*
|
|
* GCC wrongly produces a warning when a type with hidden visibility
|
|
* (e.g. js::Value) is a member of a local class of a static function.
|
|
* This is apparently fixed with GCC 4.5 and above. See:
|
|
*
|
|
* http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40145.
|
|
*/
|
|
# undef DEFINE_LOCAL_CLASS_OF_STATIC_FUNCTION
|
|
# define DEFINE_LOCAL_CLASS_OF_STATIC_FUNCTION(Name) class __attribute__((visibility ("hidden"))) Name
|
|
# endif
|
|
# elif defined(__SUNPRO_C) || defined(__SUNPRO_CC)
|
|
# define JS_EXTERNAL_VIS __global
|
|
# else
|
|
# define JS_EXTERNAL_VIS
|
|
# endif
|
|
|
|
# define JS_EXTERN_API(__type) extern JS_EXTERNAL_VIS __type
|
|
# define JS_EXPORT_API(__type) JS_EXTERNAL_VIS __type
|
|
# define JS_EXTERN_DATA(__type) extern JS_EXTERNAL_VIS __type
|
|
# define JS_EXPORT_DATA(__type) JS_EXTERNAL_VIS __type
|
|
|
|
#endif
|
|
|
|
#ifdef _WIN32
|
|
# if defined(__MWERKS__) || defined(__GNUC__)
|
|
# define JS_IMPORT_API(__x) __x
|
|
# else
|
|
# define JS_IMPORT_API(__x) __declspec(dllimport) __x
|
|
# endif
|
|
#elif defined(XP_OS2) && defined(__declspec)
|
|
# define JS_IMPORT_API(__x) __declspec(dllimport) __x
|
|
#elif defined(__SYMBIAN32__)
|
|
# define JS_IMPORT_API(__x) IMPORT_C __x
|
|
#else
|
|
# define JS_IMPORT_API(__x) JS_EXPORT_API (__x)
|
|
#endif
|
|
|
|
#if defined(_WIN32) && !defined(__MWERKS__)
|
|
# define JS_IMPORT_DATA(__x) __declspec(dllimport) __x
|
|
#elif defined(XP_OS2) && defined(__declspec)
|
|
# define JS_IMPORT_DATA(__x) __declspec(dllimport) __x
|
|
#elif defined(__SYMBIAN32__)
|
|
# if defined(__CW32__)
|
|
# define JS_IMPORT_DATA(__x) __declspec(dllimport) __x
|
|
# else
|
|
# define JS_IMPORT_DATA(__x) IMPORT_C __x
|
|
# endif
|
|
#else
|
|
# define JS_IMPORT_DATA(__x) JS_EXPORT_DATA (__x)
|
|
#endif
|
|
|
|
/*
|
|
* The linkage of JS API functions differs depending on whether the file is
|
|
* used within the JS library or not. Any source file within the JS
|
|
* interpreter should define EXPORT_JS_API whereas any client of the library
|
|
* should not. STATIC_JS_API is used to build JS as a static library.
|
|
*/
|
|
#if defined(STATIC_JS_API)
|
|
|
|
# define JS_PUBLIC_API(t) t
|
|
# define JS_PUBLIC_DATA(t) t
|
|
|
|
#elif defined(EXPORT_JS_API) || defined(STATIC_EXPORTABLE_JS_API)
|
|
|
|
# define JS_PUBLIC_API(t) JS_EXPORT_API(t)
|
|
# define JS_PUBLIC_DATA(t) JS_EXPORT_DATA(t)
|
|
|
|
#else
|
|
|
|
# define JS_PUBLIC_API(t) JS_IMPORT_API(t)
|
|
# define JS_PUBLIC_DATA(t) JS_IMPORT_DATA(t)
|
|
|
|
#endif
|
|
|
|
#define JS_FRIEND_API(t) JS_PUBLIC_API(t)
|
|
#define JS_FRIEND_DATA(t) JS_PUBLIC_DATA(t)
|
|
|
|
#if defined(_MSC_VER) && defined(_M_IX86)
|
|
#define JS_FASTCALL __fastcall
|
|
#elif defined(__GNUC__) && defined(__i386__) && \
|
|
((__GNUC__ >= 4) || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4))
|
|
#define JS_FASTCALL __attribute__((fastcall))
|
|
#else
|
|
#define JS_FASTCALL
|
|
#define JS_NO_FASTCALL
|
|
#endif
|
|
|
|
#ifndef JS_INLINE
|
|
# if defined __cplusplus
|
|
# define JS_INLINE inline
|
|
# elif defined _MSC_VER
|
|
# define JS_INLINE __inline
|
|
# elif defined __GNUC__
|
|
# define JS_INLINE __inline__
|
|
# else
|
|
# define JS_INLINE inline
|
|
# endif
|
|
#endif
|
|
|
|
#ifndef JS_ALWAYS_INLINE
|
|
# if defined DEBUG
|
|
# define JS_ALWAYS_INLINE JS_INLINE
|
|
# elif defined _MSC_VER
|
|
# define JS_ALWAYS_INLINE __forceinline
|
|
# elif defined __GNUC__
|
|
# define JS_ALWAYS_INLINE __attribute__((always_inline)) JS_INLINE
|
|
# else
|
|
# define JS_ALWAYS_INLINE JS_INLINE
|
|
# endif
|
|
#endif
|
|
|
|
#ifndef JS_NEVER_INLINE
|
|
# if defined _MSC_VER
|
|
# define JS_NEVER_INLINE __declspec(noinline)
|
|
# elif defined __GNUC__
|
|
# define JS_NEVER_INLINE __attribute__((noinline))
|
|
# else
|
|
# define JS_NEVER_INLINE
|
|
# endif
|
|
#endif
|
|
|
|
#ifdef NS_STATIC_CHECKING
|
|
/*
|
|
* Attributes for static analysis. Functions declared with JS_REQUIRES_STACK
|
|
* always have a valid cx->fp and can access it freely. Other functions can
|
|
* access cx->fp only after calling a function that "forces" the stack
|
|
* (i.e. lazily instantiates it as needed).
|
|
*/
|
|
# define JS_REQUIRES_STACK __attribute__((user("JS_REQUIRES_STACK")))
|
|
# define JS_FORCES_STACK __attribute__((user("JS_FORCES_STACK")))
|
|
/*
|
|
* Skip the JS_REQUIRES_STACK analysis within functions with this annotation.
|
|
*/
|
|
# define JS_IGNORE_STACK __attribute__((user("JS_IGNORE_STACK")))
|
|
#else
|
|
# define JS_REQUIRES_STACK
|
|
# define JS_FORCES_STACK
|
|
# define JS_IGNORE_STACK
|
|
#endif
|
|
|
|
/***********************************************************************
|
|
** MACROS: JS_BEGIN_MACRO
|
|
** JS_END_MACRO
|
|
** DESCRIPTION:
|
|
** Macro body brackets so that macros with compound statement definitions
|
|
** behave syntactically more like functions when called.
|
|
***********************************************************************/
|
|
#define JS_BEGIN_MACRO do {
|
|
|
|
#if defined(_MSC_VER) && _MSC_VER >= 1400
|
|
# define JS_END_MACRO \
|
|
} __pragma(warning(push)) __pragma(warning(disable:4127)) \
|
|
while (0) __pragma(warning(pop))
|
|
#else
|
|
# define JS_END_MACRO } while (0)
|
|
#endif
|
|
|
|
/***********************************************************************
|
|
** MACROS: JS_BEGIN_EXTERN_C
|
|
** JS_END_EXTERN_C
|
|
** DESCRIPTION:
|
|
** Macro shorthands for conditional C++ extern block delimiters.
|
|
***********************************************************************/
|
|
#ifdef __cplusplus
|
|
|
|
# define JS_BEGIN_EXTERN_C extern "C" {
|
|
# define JS_END_EXTERN_C }
|
|
|
|
#else
|
|
|
|
# define JS_BEGIN_EXTERN_C
|
|
# define JS_END_EXTERN_C
|
|
|
|
#endif
|
|
|
|
/***********************************************************************
|
|
** MACROS: JS_BIT
|
|
** JS_BITMASK
|
|
** DESCRIPTION:
|
|
** Bit masking macros. XXX n must be <= 31 to be portable
|
|
***********************************************************************/
|
|
#define JS_BIT(n) ((JSUint32)1 << (n))
|
|
#define JS_BITMASK(n) (JS_BIT(n) - 1)
|
|
|
|
/***********************************************************************
|
|
** MACROS: JS_HOWMANY
|
|
** JS_ROUNDUP
|
|
** JS_MIN
|
|
** JS_MAX
|
|
** DESCRIPTION:
|
|
** Commonly used macros for operations on compatible types.
|
|
***********************************************************************/
|
|
#define JS_HOWMANY(x,y) (((x)+(y)-1)/(y))
|
|
#define JS_ROUNDUP(x,y) (JS_HOWMANY(x,y)*(y))
|
|
#define JS_MIN(x,y) ((x)<(y)?(x):(y))
|
|
#define JS_MAX(x,y) ((x)>(y)?(x):(y))
|
|
|
|
#ifdef _MSC_VER
|
|
# include "jscpucfg.h" /* We can't auto-detect MSVC configuration */
|
|
# if _MSC_VER < 1400
|
|
# define NJ_NO_VARIADIC_MACROS
|
|
# endif
|
|
#else
|
|
# include "jsautocfg.h" /* Use auto-detected configuration */
|
|
#endif
|
|
|
|
/*
|
|
* Define JS_64BIT iff we are building in an environment with 64-bit
|
|
* addresses.
|
|
*/
|
|
#ifdef _MSC_VER
|
|
# if defined(_M_X64) || defined(_M_AMD64)
|
|
# define JS_64BIT
|
|
# endif
|
|
#elif defined(__GNUC__)
|
|
# ifdef __x86_64__
|
|
# define JS_64BIT
|
|
# endif
|
|
#elif defined(__SUNPRO_C) || defined(__SUNPRO_CC)
|
|
# ifdef __x86_64
|
|
# define JS_64BIT
|
|
# endif
|
|
#else
|
|
# error "Implement me"
|
|
#endif
|
|
|
|
|
|
#include "jsinttypes.h"
|
|
|
|
JS_BEGIN_EXTERN_C
|
|
|
|
/************************************************************************
|
|
** TYPES: JSUintn
|
|
** JSIntn
|
|
** DESCRIPTION:
|
|
** The JSIntn types are most appropriate for automatic variables. They are
|
|
** guaranteed to be at least 16 bits, though various architectures may
|
|
** define them to be wider (e.g., 32 or even 64 bits). These types are
|
|
** never valid for fields of a structure.
|
|
************************************************************************/
|
|
|
|
typedef int JSIntn;
|
|
typedef unsigned int JSUintn;
|
|
|
|
/************************************************************************
|
|
** TYPES: JSFloat64
|
|
** DESCRIPTION:
|
|
** NSPR's floating point type is always 64 bits.
|
|
************************************************************************/
|
|
typedef double JSFloat64;
|
|
|
|
/************************************************************************
|
|
** TYPES: JSSize
|
|
** DESCRIPTION:
|
|
** A type for representing the size of objects.
|
|
************************************************************************/
|
|
typedef size_t JSSize;
|
|
|
|
/************************************************************************
|
|
** TYPES: JSPtrDiff
|
|
** DESCRIPTION:
|
|
** A type for pointer difference. Variables of this type are suitable
|
|
** for storing a pointer or pointer sutraction.
|
|
************************************************************************/
|
|
typedef ptrdiff_t JSPtrdiff;
|
|
|
|
/************************************************************************
|
|
** TYPES: JSUptrdiff
|
|
** DESCRIPTION:
|
|
** A type for pointer difference. Variables of this type are suitable
|
|
** for storing a pointer or pointer sutraction.
|
|
************************************************************************/
|
|
typedef JSUintPtr JSUptrdiff;
|
|
|
|
/************************************************************************
|
|
** TYPES: JSBool
|
|
** DESCRIPTION:
|
|
** Use JSBool for variables and parameter types. Use JS_FALSE and JS_TRUE
|
|
** for clarity of target type in assignments and actual arguments. Use
|
|
** 'if (bool)', 'while (!bool)', '(bool) ? x : y' etc., to test booleans
|
|
** just as you would C int-valued conditions.
|
|
************************************************************************/
|
|
typedef JSIntn JSBool;
|
|
#define JS_TRUE (JSIntn)1
|
|
#define JS_FALSE (JSIntn)0
|
|
/*
|
|
** Special: JS_NEITHER is used by the tracer to have tri-state booleans.
|
|
** This should not be used in new code.
|
|
*/
|
|
#define JS_NEITHER (JSIntn)2
|
|
|
|
/************************************************************************
|
|
** TYPES: JSPackedBool
|
|
** DESCRIPTION:
|
|
** Use JSPackedBool within structs where bitfields are not desireable
|
|
** but minimum and consistent overhead matters.
|
|
************************************************************************/
|
|
typedef JSUint8 JSPackedBool;
|
|
|
|
/*
|
|
** A JSWord is an integer that is the same size as a void*
|
|
*/
|
|
typedef JSIntPtr JSWord;
|
|
typedef JSUintPtr JSUword;
|
|
|
|
#include "jsotypes.h"
|
|
|
|
/***********************************************************************
|
|
** MACROS: JS_LIKELY
|
|
** JS_UNLIKELY
|
|
** DESCRIPTION:
|
|
** These macros allow you to give a hint to the compiler about branch
|
|
** probability so that it can better optimize. Use them like this:
|
|
**
|
|
** if (JS_LIKELY(v == 1)) {
|
|
** ... expected code path ...
|
|
** }
|
|
**
|
|
** if (JS_UNLIKELY(v == 0)) {
|
|
** ... non-expected code path ...
|
|
** }
|
|
**
|
|
***********************************************************************/
|
|
#if defined(__GNUC__) && (__GNUC__ > 2)
|
|
|
|
# define JS_LIKELY(x) (__builtin_expect((x), 1))
|
|
# define JS_UNLIKELY(x) (__builtin_expect((x), 0))
|
|
|
|
#else
|
|
|
|
# define JS_LIKELY(x) (x)
|
|
# define JS_UNLIKELY(x) (x)
|
|
|
|
#endif
|
|
|
|
/***********************************************************************
|
|
** MACROS: JS_ARRAY_LENGTH
|
|
** JS_ARRAY_END
|
|
** DESCRIPTION:
|
|
** Macros to get the number of elements and the pointer to one past the
|
|
** last element of a C array. Use them like this:
|
|
**
|
|
** jschar buf[10], *s;
|
|
** JSString *str;
|
|
** ...
|
|
** for (s = buf; s != JS_ARRAY_END(buf); ++s) *s = ...;
|
|
** ...
|
|
** str = JS_NewStringCopyN(cx, buf, JS_ARRAY_LENGTH(buf));
|
|
** ...
|
|
**
|
|
***********************************************************************/
|
|
|
|
#define JS_ARRAY_LENGTH(array) (sizeof (array) / sizeof (array)[0])
|
|
#define JS_ARRAY_END(array) ((array) + JS_ARRAY_LENGTH(array))
|
|
|
|
#define JS_BITS_PER_BYTE 8
|
|
#define JS_BITS_PER_BYTE_LOG2 3
|
|
|
|
#define JS_BITS_PER_WORD (JS_BITS_PER_BYTE * JS_BYTES_PER_WORD)
|
|
#define JS_BITS_PER_DOUBLE (JS_BITS_PER_BYTE * JS_BYTES_PER_DOUBLE)
|
|
|
|
/***********************************************************************
|
|
** MACROS: JS_FUNC_TO_DATA_PTR
|
|
** JS_DATA_TO_FUNC_PTR
|
|
** DESCRIPTION:
|
|
** Macros to convert between function and data pointers assuming that
|
|
** they have the same size. Use them like this:
|
|
**
|
|
** JSPropertyOp nativeGetter;
|
|
** JSObject *scriptedGetter;
|
|
** ...
|
|
** scriptedGetter = JS_FUNC_TO_DATA_PTR(JSObject *, nativeGetter);
|
|
** ...
|
|
** nativeGetter = JS_DATA_TO_FUNC_PTR(JSPropertyOp, scriptedGetter);
|
|
**
|
|
***********************************************************************/
|
|
|
|
#ifdef __GNUC__
|
|
# define JS_FUNC_TO_DATA_PTR(type, fun) (__extension__ (type) (fun))
|
|
# define JS_DATA_TO_FUNC_PTR(type, ptr) (__extension__ (type) (ptr))
|
|
#else
|
|
/* Use an extra (void *) cast for MSVC. */
|
|
# define JS_FUNC_TO_DATA_PTR(type, fun) ((type) (void *) (fun))
|
|
# define JS_DATA_TO_FUNC_PTR(type, ptr) ((type) (void *) (ptr))
|
|
#endif
|
|
|
|
#ifdef __GNUC__
|
|
# define JS_EXTENSION __extension__
|
|
# define JS_EXTENSION_(s) __extension__ ({ s; })
|
|
#else
|
|
# define JS_EXTENSION
|
|
# define JS_EXTENSION_(s) s
|
|
#endif
|
|
|
|
JS_END_EXTERN_C
|
|
|
|
#endif /* jstypes_h___ */
|