typedefs.h (4995B)
1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2; -*- 2 */ 3 /* This Source Code Form is subject to the terms of the Mozilla Public 4 * License, v. 2.0. If a copy of the MPL was not distributed with this 5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ 6 7 /** 8 * This header contains the builtin types available for arguments and return 9 * values, representing their C counterparts. They are used inside higher-order 10 * macros that the user must call, providing a macro that will consume the 11 * arguments provided to it by the higher-order macro. The macros exposed are: 12 * 13 * CTYPES_FOR_EACH_BOOL_TYPE(MACRO) 14 * CTYPES_FOR_EACH_CHAR_TYPE(MACRO) 15 * CTYPES_FOR_EACH_CHAR16_TYPE(MACRO) 16 * CTYPES_FOR_EACH_INT_TYPE(MACRO) 17 * CTYPES_FOR_EACH_WRAPPED_INT_TYPE(MACRO) 18 * CTYPES_FOR_EACH_FLOAT_TYPE(MACRO) 19 * CTYPES_FOR_EACH_TYPE(MACRO) 20 * 21 * The MACRO name provided to any of these macros will then be repeatedly 22 * invoked as 23 * 24 * MACRO(typename, ctype, ffitype) 25 * 26 * where 'typename' is the name of the type constructor (accessible as 27 * ctypes.typename), 'ctype' is the corresponding C type declaration (from 28 * which sizeof(ctype) and templated type conversions will be derived), and 29 * 'ffitype' is the ffi_type to use. (Special types, such as 'void' and the 30 * pointer, array, and struct types are handled separately.) 31 */ 32 33 #ifndef ctypes_typedefs_h 34 #define ctypes_typedefs_h 35 36 // MSVC doesn't have ssize_t. Help it along a little. 37 #ifdef _WIN32 38 # define CTYPES_SSIZE_T intptr_t 39 #else 40 # define CTYPES_SSIZE_T ssize_t 41 #endif 42 43 // Some #defines to make handling of types whose length varies by platform 44 // easier. These could be implemented as configure tests, but the expressions 45 // are all statically resolvable so there's no need. (See CTypes.cpp for the 46 // appropriate PR_STATIC_ASSERTs; they can't go here since this header is 47 // used in places where such asserts are illegal.) 48 #define CTYPES_FFI_BOOL (sizeof(bool) == 1 ? ffi_type_uint8 : ffi_type_uint32) 49 #define CTYPES_FFI_LONG (sizeof(long) == 4 ? ffi_type_sint32 : ffi_type_sint64) 50 #define CTYPES_FFI_ULONG (sizeof(long) == 4 ? ffi_type_uint32 : ffi_type_uint64) 51 #define CTYPES_FFI_SIZE_T \ 52 (sizeof(size_t) == 4 ? ffi_type_uint32 : ffi_type_uint64) 53 #define CTYPES_FFI_SSIZE_T \ 54 (sizeof(size_t) == 4 ? ffi_type_sint32 : ffi_type_sint64) 55 #define CTYPES_FFI_OFF_T \ 56 (sizeof(off_t) == 4 ? ffi_type_sint32 : ffi_type_sint64) 57 #define CTYPES_FFI_INTPTR_T \ 58 (sizeof(uintptr_t) == 4 ? ffi_type_sint32 : ffi_type_sint64) 59 #define CTYPES_FFI_UINTPTR_T \ 60 (sizeof(uintptr_t) == 4 ? ffi_type_uint32 : ffi_type_uint64) 61 62 #define CTYPES_FOR_EACH_BOOL_TYPE(MACRO) MACRO(bool, bool, CTYPES_FFI_BOOL) 63 64 #define CTYPES_FOR_EACH_INT_TYPE(MACRO) \ 65 MACRO(int8_t, int8_t, ffi_type_sint8) \ 66 MACRO(int16_t, int16_t, ffi_type_sint16) \ 67 MACRO(int32_t, int32_t, ffi_type_sint32) \ 68 MACRO(uint8_t, uint8_t, ffi_type_uint8) \ 69 MACRO(uint16_t, uint16_t, ffi_type_uint16) \ 70 MACRO(uint32_t, uint32_t, ffi_type_uint32) \ 71 MACRO(short, short, ffi_type_sint16) \ 72 MACRO(unsigned_short, unsigned short, ffi_type_uint16) \ 73 MACRO(int, int, ffi_type_sint32) \ 74 MACRO(unsigned_int, unsigned int, ffi_type_uint32) 75 76 #define CTYPES_FOR_EACH_WRAPPED_INT_TYPE(MACRO) \ 77 MACRO(int64_t, int64_t, ffi_type_sint64) \ 78 MACRO(uint64_t, uint64_t, ffi_type_uint64) \ 79 MACRO(long, long, CTYPES_FFI_LONG) \ 80 MACRO(unsigned_long, unsigned long, CTYPES_FFI_ULONG) \ 81 MACRO(long_long, long long, ffi_type_sint64) \ 82 MACRO(unsigned_long_long, unsigned long long, ffi_type_uint64) \ 83 MACRO(size_t, size_t, CTYPES_FFI_SIZE_T) \ 84 MACRO(ssize_t, CTYPES_SSIZE_T, CTYPES_FFI_SSIZE_T) \ 85 MACRO(off_t, off_t, CTYPES_FFI_OFF_T) \ 86 MACRO(intptr_t, intptr_t, CTYPES_FFI_INTPTR_T) \ 87 MACRO(uintptr_t, uintptr_t, CTYPES_FFI_UINTPTR_T) 88 89 #define CTYPES_FOR_EACH_FLOAT_TYPE(MACRO) \ 90 MACRO(float32_t, float, ffi_type_float) \ 91 MACRO(float64_t, double, ffi_type_double) \ 92 MACRO(float, float, ffi_type_float) \ 93 MACRO(double, double, ffi_type_double) 94 95 #define CTYPES_FOR_EACH_CHAR_TYPE(MACRO) \ 96 MACRO(char, char, ffi_type_uint8) \ 97 MACRO(signed_char, signed char, ffi_type_sint8) \ 98 MACRO(unsigned_char, unsigned char, ffi_type_uint8) 99 100 #define CTYPES_FOR_EACH_CHAR16_TYPE(MACRO) \ 101 MACRO(char16_t, char16_t, ffi_type_uint16) 102 103 #define CTYPES_FOR_EACH_TYPE(MACRO) \ 104 CTYPES_FOR_EACH_BOOL_TYPE(MACRO) \ 105 CTYPES_FOR_EACH_INT_TYPE(MACRO) \ 106 CTYPES_FOR_EACH_WRAPPED_INT_TYPE(MACRO) \ 107 CTYPES_FOR_EACH_FLOAT_TYPE(MACRO) \ 108 CTYPES_FOR_EACH_CHAR_TYPE(MACRO) \ 109 CTYPES_FOR_EACH_CHAR16_TYPE(MACRO) 110 111 #endif /* ctypes_typedefs_h */