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107 lines
5.1 KiB
C
107 lines
5.1 KiB
C
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2; -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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/**
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* This header contains the builtin types available for arguments and return
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* values, representing their C counterparts. They are used inside higher-order
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* macros that the user must call, providing a macro that will consume the
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* arguments provided to it by the higher-order macro. The macros exposed are:
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*
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* CTYPES_FOR_EACH_BOOL_TYPE(macro)
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* CTYPES_FOR_EACH_CHAR_TYPE(macro)
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* CTYPES_FOR_EACH_CHAR16_TYPE(macro)
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* CTYPES_FOR_EACH_INT_TYPE(macro)
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* CTYPES_FOR_EACH_WRAPPED_INT_TYPE(macro)
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* CTYPES_FOR_EACH_FLOAT_TYPE(macro)
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* CTYPES_FOR_EACH_TYPE(macro)
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*
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* The macro name provided to any of these macros will then be repeatedly
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* invoked as
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*
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* macro(typename, ctype, ffitype)
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*
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* where 'typename' is the name of the type constructor (accessible as
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* ctypes.typename), 'ctype' is the corresponding C type declaration (from
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* which sizeof(ctype) and templated type conversions will be derived), and
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* 'ffitype' is the ffi_type to use. (Special types, such as 'void' and the
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* pointer, array, and struct types are handled separately.)
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*/
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#ifndef ctypes_typedefs_h
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#define ctypes_typedefs_h
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// MSVC doesn't have ssize_t. Help it along a little.
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#ifdef HAVE_SSIZE_T
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#define CTYPES_SSIZE_T ssize_t
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#else
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#define CTYPES_SSIZE_T intptr_t
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#endif
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// Some #defines to make handling of types whose length varies by platform
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// easier. These could be implemented as configure tests, but the expressions
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// are all statically resolvable so there's no need. (See CTypes.cpp for the
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// appropriate PR_STATIC_ASSERTs; they can't go here since this header is
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// used in places where such asserts are illegal.)
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#define CTYPES_FFI_BOOL (sizeof(bool) == 1 ? ffi_type_uint8 : ffi_type_uint32)
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#define CTYPES_FFI_LONG (sizeof(long) == 4 ? ffi_type_sint32 : ffi_type_sint64)
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#define CTYPES_FFI_ULONG (sizeof(long) == 4 ? ffi_type_uint32 : ffi_type_uint64)
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#define CTYPES_FFI_SIZE_T (sizeof(size_t) == 4 ? ffi_type_uint32 : ffi_type_uint64)
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#define CTYPES_FFI_SSIZE_T (sizeof(size_t) == 4 ? ffi_type_sint32 : ffi_type_sint64)
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#define CTYPES_FFI_OFF_T (sizeof(off_t) == 4 ? ffi_type_sint32 : ffi_type_sint64)
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#define CTYPES_FFI_INTPTR_T (sizeof(uintptr_t) == 4 ? ffi_type_sint32 : ffi_type_sint64)
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#define CTYPES_FFI_UINTPTR_T (sizeof(uintptr_t) == 4 ? ffi_type_uint32 : ffi_type_uint64)
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#define CTYPES_FOR_EACH_BOOL_TYPE(macro) \
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macro(bool, bool, CTYPES_FFI_BOOL)
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#define CTYPES_FOR_EACH_INT_TYPE(macro) \
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macro(int8_t, int8_t, ffi_type_sint8) \
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macro(int16_t, int16_t, ffi_type_sint16) \
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macro(int32_t, int32_t, ffi_type_sint32) \
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macro(uint8_t, uint8_t, ffi_type_uint8) \
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macro(uint16_t, uint16_t, ffi_type_uint16) \
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macro(uint32_t, uint32_t, ffi_type_uint32) \
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macro(short, short, ffi_type_sint16) \
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macro(unsigned_short, unsigned short, ffi_type_uint16) \
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macro(int, int, ffi_type_sint32) \
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macro(unsigned_int, unsigned int, ffi_type_uint32)
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#define CTYPES_FOR_EACH_WRAPPED_INT_TYPE(macro) \
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macro(int64_t, int64_t, ffi_type_sint64) \
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macro(uint64_t, uint64_t, ffi_type_uint64) \
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macro(long, long, CTYPES_FFI_LONG) \
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macro(unsigned_long, unsigned long, CTYPES_FFI_ULONG) \
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macro(long_long, long long, ffi_type_sint64) \
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macro(unsigned_long_long, unsigned long long, ffi_type_uint64) \
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macro(size_t, size_t, CTYPES_FFI_SIZE_T) \
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macro(ssize_t, CTYPES_SSIZE_T, CTYPES_FFI_SSIZE_T) \
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macro(off_t, off_t, CTYPES_FFI_OFF_T) \
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macro(intptr_t, intptr_t, CTYPES_FFI_INTPTR_T) \
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macro(uintptr_t, uintptr_t, CTYPES_FFI_UINTPTR_T)
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#define CTYPES_FOR_EACH_FLOAT_TYPE(macro) \
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macro(float32_t, float, ffi_type_float) \
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macro(float64_t, double, ffi_type_double) \
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macro(float, float, ffi_type_float) \
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macro(double, double, ffi_type_double)
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#define CTYPES_FOR_EACH_CHAR_TYPE(macro) \
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macro(char, char, ffi_type_uint8) \
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macro(signed_char, signed char, ffi_type_sint8) \
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macro(unsigned_char, unsigned char, ffi_type_uint8)
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#define CTYPES_FOR_EACH_CHAR16_TYPE(macro) \
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macro(char16_t, char16_t, ffi_type_uint16)
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#define CTYPES_FOR_EACH_TYPE(macro) \
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CTYPES_FOR_EACH_BOOL_TYPE(macro) \
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CTYPES_FOR_EACH_INT_TYPE(macro) \
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CTYPES_FOR_EACH_WRAPPED_INT_TYPE(macro) \
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CTYPES_FOR_EACH_FLOAT_TYPE(macro) \
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CTYPES_FOR_EACH_CHAR_TYPE(macro) \
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CTYPES_FOR_EACH_CHAR16_TYPE(macro)
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#endif /* ctypes_typedefs_h */
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