188 lines
5.6 KiB
Python
188 lines
5.6 KiB
Python
from .error import VerificationError
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class CffiOp(object):
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def __init__(self, op, arg):
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self.op = op
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self.arg = arg
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def as_c_expr(self):
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if self.op is None:
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assert isinstance(self.arg, str)
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return '(_cffi_opcode_t)(%s)' % (self.arg,)
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classname = CLASS_NAME[self.op]
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return '_CFFI_OP(_CFFI_OP_%s, %s)' % (classname, self.arg)
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def as_python_bytes(self):
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if self.op is None and self.arg.isdigit():
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value = int(self.arg) # non-negative: '-' not in self.arg
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if value >= 2**31:
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raise OverflowError("cannot emit %r: limited to 2**31-1"
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% (self.arg,))
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return format_four_bytes(value)
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if isinstance(self.arg, str):
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raise VerificationError("cannot emit to Python: %r" % (self.arg,))
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return format_four_bytes((self.arg << 8) | self.op)
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def __str__(self):
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classname = CLASS_NAME.get(self.op, self.op)
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return '(%s %s)' % (classname, self.arg)
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def format_four_bytes(num):
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return '\\x%02X\\x%02X\\x%02X\\x%02X' % (
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(num >> 24) & 0xFF,
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(num >> 16) & 0xFF,
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(num >> 8) & 0xFF,
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(num ) & 0xFF)
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OP_PRIMITIVE = 1
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OP_POINTER = 3
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OP_ARRAY = 5
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OP_OPEN_ARRAY = 7
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OP_STRUCT_UNION = 9
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OP_ENUM = 11
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OP_FUNCTION = 13
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OP_FUNCTION_END = 15
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OP_NOOP = 17
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OP_BITFIELD = 19
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OP_TYPENAME = 21
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OP_CPYTHON_BLTN_V = 23 # varargs
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OP_CPYTHON_BLTN_N = 25 # noargs
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OP_CPYTHON_BLTN_O = 27 # O (i.e. a single arg)
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OP_CONSTANT = 29
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OP_CONSTANT_INT = 31
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OP_GLOBAL_VAR = 33
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OP_DLOPEN_FUNC = 35
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OP_DLOPEN_CONST = 37
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OP_GLOBAL_VAR_F = 39
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OP_EXTERN_PYTHON = 41
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PRIM_VOID = 0
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PRIM_BOOL = 1
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PRIM_CHAR = 2
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PRIM_SCHAR = 3
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PRIM_UCHAR = 4
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PRIM_SHORT = 5
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PRIM_USHORT = 6
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PRIM_INT = 7
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PRIM_UINT = 8
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PRIM_LONG = 9
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PRIM_ULONG = 10
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PRIM_LONGLONG = 11
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PRIM_ULONGLONG = 12
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PRIM_FLOAT = 13
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PRIM_DOUBLE = 14
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PRIM_LONGDOUBLE = 15
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PRIM_WCHAR = 16
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PRIM_INT8 = 17
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PRIM_UINT8 = 18
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PRIM_INT16 = 19
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PRIM_UINT16 = 20
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PRIM_INT32 = 21
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PRIM_UINT32 = 22
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PRIM_INT64 = 23
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PRIM_UINT64 = 24
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PRIM_INTPTR = 25
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PRIM_UINTPTR = 26
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PRIM_PTRDIFF = 27
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PRIM_SIZE = 28
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PRIM_SSIZE = 29
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PRIM_INT_LEAST8 = 30
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PRIM_UINT_LEAST8 = 31
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PRIM_INT_LEAST16 = 32
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PRIM_UINT_LEAST16 = 33
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PRIM_INT_LEAST32 = 34
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PRIM_UINT_LEAST32 = 35
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PRIM_INT_LEAST64 = 36
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PRIM_UINT_LEAST64 = 37
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PRIM_INT_FAST8 = 38
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PRIM_UINT_FAST8 = 39
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PRIM_INT_FAST16 = 40
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PRIM_UINT_FAST16 = 41
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PRIM_INT_FAST32 = 42
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PRIM_UINT_FAST32 = 43
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PRIM_INT_FAST64 = 44
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PRIM_UINT_FAST64 = 45
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PRIM_INTMAX = 46
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PRIM_UINTMAX = 47
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PRIM_FLOATCOMPLEX = 48
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PRIM_DOUBLECOMPLEX = 49
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PRIM_CHAR16 = 50
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PRIM_CHAR32 = 51
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_NUM_PRIM = 52
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_UNKNOWN_PRIM = -1
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_UNKNOWN_FLOAT_PRIM = -2
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_UNKNOWN_LONG_DOUBLE = -3
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_IO_FILE_STRUCT = -1
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PRIMITIVE_TO_INDEX = {
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'char': PRIM_CHAR,
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'short': PRIM_SHORT,
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'int': PRIM_INT,
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'long': PRIM_LONG,
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'long long': PRIM_LONGLONG,
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'signed char': PRIM_SCHAR,
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'unsigned char': PRIM_UCHAR,
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'unsigned short': PRIM_USHORT,
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'unsigned int': PRIM_UINT,
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'unsigned long': PRIM_ULONG,
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'unsigned long long': PRIM_ULONGLONG,
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'float': PRIM_FLOAT,
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'double': PRIM_DOUBLE,
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'long double': PRIM_LONGDOUBLE,
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'float _Complex': PRIM_FLOATCOMPLEX,
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'double _Complex': PRIM_DOUBLECOMPLEX,
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'_Bool': PRIM_BOOL,
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'wchar_t': PRIM_WCHAR,
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'char16_t': PRIM_CHAR16,
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'char32_t': PRIM_CHAR32,
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'int8_t': PRIM_INT8,
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'uint8_t': PRIM_UINT8,
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'int16_t': PRIM_INT16,
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'uint16_t': PRIM_UINT16,
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'int32_t': PRIM_INT32,
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'uint32_t': PRIM_UINT32,
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'int64_t': PRIM_INT64,
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'uint64_t': PRIM_UINT64,
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'intptr_t': PRIM_INTPTR,
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'uintptr_t': PRIM_UINTPTR,
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'ptrdiff_t': PRIM_PTRDIFF,
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'size_t': PRIM_SIZE,
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'ssize_t': PRIM_SSIZE,
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'int_least8_t': PRIM_INT_LEAST8,
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'uint_least8_t': PRIM_UINT_LEAST8,
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'int_least16_t': PRIM_INT_LEAST16,
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'uint_least16_t': PRIM_UINT_LEAST16,
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'int_least32_t': PRIM_INT_LEAST32,
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'uint_least32_t': PRIM_UINT_LEAST32,
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'int_least64_t': PRIM_INT_LEAST64,
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'uint_least64_t': PRIM_UINT_LEAST64,
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'int_fast8_t': PRIM_INT_FAST8,
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'uint_fast8_t': PRIM_UINT_FAST8,
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'int_fast16_t': PRIM_INT_FAST16,
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'uint_fast16_t': PRIM_UINT_FAST16,
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'int_fast32_t': PRIM_INT_FAST32,
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'uint_fast32_t': PRIM_UINT_FAST32,
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'int_fast64_t': PRIM_INT_FAST64,
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'uint_fast64_t': PRIM_UINT_FAST64,
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'intmax_t': PRIM_INTMAX,
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'uintmax_t': PRIM_UINTMAX,
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}
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F_UNION = 0x01
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F_CHECK_FIELDS = 0x02
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F_PACKED = 0x04
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F_EXTERNAL = 0x08
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F_OPAQUE = 0x10
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G_FLAGS = dict([('_CFFI_' + _key, globals()[_key])
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for _key in ['F_UNION', 'F_CHECK_FIELDS', 'F_PACKED',
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'F_EXTERNAL', 'F_OPAQUE']])
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CLASS_NAME = {}
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for _name, _value in list(globals().items()):
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if _name.startswith('OP_') and isinstance(_value, int):
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CLASS_NAME[_value] = _name[3:]
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