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Diffstat (limited to 'js/src/ctypes/typedefs.h')
| -rw-r--r-- | js/src/ctypes/typedefs.h | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/js/src/ctypes/typedefs.h b/js/src/ctypes/typedefs.h new file mode 100644 index 0000000000..51b020a09f --- /dev/null +++ b/js/src/ctypes/typedefs.h @@ -0,0 +1,111 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2; -*- + */ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +/** + * This header contains the builtin types available for arguments and return + * values, representing their C counterparts. They are used inside higher-order + * macros that the user must call, providing a macro that will consume the + * arguments provided to it by the higher-order macro. The macros exposed are: + * + * CTYPES_FOR_EACH_BOOL_TYPE(MACRO) + * CTYPES_FOR_EACH_CHAR_TYPE(MACRO) + * CTYPES_FOR_EACH_CHAR16_TYPE(MACRO) + * CTYPES_FOR_EACH_INT_TYPE(MACRO) + * CTYPES_FOR_EACH_WRAPPED_INT_TYPE(MACRO) + * CTYPES_FOR_EACH_FLOAT_TYPE(MACRO) + * CTYPES_FOR_EACH_TYPE(MACRO) + * + * The MACRO name provided to any of these macros will then be repeatedly + * invoked as + * + * MACRO(typename, ctype, ffitype) + * + * where 'typename' is the name of the type constructor (accessible as + * ctypes.typename), 'ctype' is the corresponding C type declaration (from + * which sizeof(ctype) and templated type conversions will be derived), and + * 'ffitype' is the ffi_type to use. (Special types, such as 'void' and the + * pointer, array, and struct types are handled separately.) + */ + +#ifndef ctypes_typedefs_h +#define ctypes_typedefs_h + +// MSVC doesn't have ssize_t. Help it along a little. +#ifdef HAVE_SSIZE_T +# define CTYPES_SSIZE_T ssize_t +#else +# define CTYPES_SSIZE_T intptr_t +#endif + +// Some #defines to make handling of types whose length varies by platform +// easier. These could be implemented as configure tests, but the expressions +// are all statically resolvable so there's no need. (See CTypes.cpp for the +// appropriate PR_STATIC_ASSERTs; they can't go here since this header is +// used in places where such asserts are illegal.) +#define CTYPES_FFI_BOOL (sizeof(bool) == 1 ? ffi_type_uint8 : ffi_type_uint32) +#define CTYPES_FFI_LONG (sizeof(long) == 4 ? ffi_type_sint32 : ffi_type_sint64) +#define CTYPES_FFI_ULONG (sizeof(long) == 4 ? ffi_type_uint32 : ffi_type_uint64) +#define CTYPES_FFI_SIZE_T \ + (sizeof(size_t) == 4 ? ffi_type_uint32 : ffi_type_uint64) +#define CTYPES_FFI_SSIZE_T \ + (sizeof(size_t) == 4 ? ffi_type_sint32 : ffi_type_sint64) +#define CTYPES_FFI_OFF_T \ + (sizeof(off_t) == 4 ? ffi_type_sint32 : ffi_type_sint64) +#define CTYPES_FFI_INTPTR_T \ + (sizeof(uintptr_t) == 4 ? ffi_type_sint32 : ffi_type_sint64) +#define CTYPES_FFI_UINTPTR_T \ + (sizeof(uintptr_t) == 4 ? ffi_type_uint32 : ffi_type_uint64) + +#define CTYPES_FOR_EACH_BOOL_TYPE(MACRO) MACRO(bool, bool, CTYPES_FFI_BOOL) + +#define CTYPES_FOR_EACH_INT_TYPE(MACRO) \ + MACRO(int8_t, int8_t, ffi_type_sint8) \ + MACRO(int16_t, int16_t, ffi_type_sint16) \ + MACRO(int32_t, int32_t, ffi_type_sint32) \ + MACRO(uint8_t, uint8_t, ffi_type_uint8) \ + MACRO(uint16_t, uint16_t, ffi_type_uint16) \ + MACRO(uint32_t, uint32_t, ffi_type_uint32) \ + MACRO(short, short, ffi_type_sint16) \ + MACRO(unsigned_short, unsigned short, ffi_type_uint16) \ + MACRO(int, int, ffi_type_sint32) \ + MACRO(unsigned_int, unsigned int, ffi_type_uint32) + +#define CTYPES_FOR_EACH_WRAPPED_INT_TYPE(MACRO) \ + MACRO(int64_t, int64_t, ffi_type_sint64) \ + MACRO(uint64_t, uint64_t, ffi_type_uint64) \ + MACRO(long, long, CTYPES_FFI_LONG) \ + MACRO(unsigned_long, unsigned long, CTYPES_FFI_ULONG) \ + MACRO(long_long, long long, ffi_type_sint64) \ + MACRO(unsigned_long_long, unsigned long long, ffi_type_uint64) \ + MACRO(size_t, size_t, CTYPES_FFI_SIZE_T) \ + MACRO(ssize_t, CTYPES_SSIZE_T, CTYPES_FFI_SSIZE_T) \ + MACRO(off_t, off_t, CTYPES_FFI_OFF_T) \ + MACRO(intptr_t, intptr_t, CTYPES_FFI_INTPTR_T) \ + MACRO(uintptr_t, uintptr_t, CTYPES_FFI_UINTPTR_T) + +#define CTYPES_FOR_EACH_FLOAT_TYPE(MACRO) \ + MACRO(float32_t, float, ffi_type_float) \ + MACRO(float64_t, double, ffi_type_double) \ + MACRO(float, float, ffi_type_float) \ + MACRO(double, double, ffi_type_double) + +#define CTYPES_FOR_EACH_CHAR_TYPE(MACRO) \ + MACRO(char, char, ffi_type_uint8) \ + MACRO(signed_char, signed char, ffi_type_sint8) \ + MACRO(unsigned_char, unsigned char, ffi_type_uint8) + +#define CTYPES_FOR_EACH_CHAR16_TYPE(MACRO) \ + MACRO(char16_t, char16_t, ffi_type_uint16) + +#define CTYPES_FOR_EACH_TYPE(MACRO) \ + CTYPES_FOR_EACH_BOOL_TYPE(MACRO) \ + CTYPES_FOR_EACH_INT_TYPE(MACRO) \ + CTYPES_FOR_EACH_WRAPPED_INT_TYPE(MACRO) \ + CTYPES_FOR_EACH_FLOAT_TYPE(MACRO) \ + CTYPES_FOR_EACH_CHAR_TYPE(MACRO) \ + CTYPES_FOR_EACH_CHAR16_TYPE(MACRO) + +#endif /* ctypes_typedefs_h */ |