/
intnum.pxi
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/
intnum.pxi
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# Python bindings for Yasm: Pyrex input file for intnum.h
#
# Copyright (C) 2006 Michael Urman, Peter Johnson
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND OTHER CONTRIBUTORS ``AS IS''
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR OTHER CONTRIBUTORS BE
# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
cdef class IntNum
cdef object __intnum_op_ex(object x, yasm_expr_op op, object y):
value = __intnum_op(x, op, y)
__error_check()
return value
cdef object __intnum_op(object x, yasm_expr_op op, object y):
if isinstance(x, IntNum):
result = IntNum(x)
if y is None:
yasm_intnum_calc((<IntNum>result).intn, op, NULL)
else:
# Coerce to intnum if not already
if isinstance(y, IntNum):
rhs = y
else:
rhs = IntNum(y)
yasm_intnum_calc((<IntNum>result).intn, op, (<IntNum>rhs).intn)
return result
elif isinstance(y, IntNum):
# Reversed operation - x OP y still, just y is intnum, x isn't.
result = IntNum(x)
yasm_intnum_calc((<IntNum>result).intn, op, (<IntNum>y).intn)
return result
else:
raise NotImplementedError
cdef object __make_intnum(yasm_intnum *intn):
return IntNum(__pass_voidp(intn, IntNum))
cdef class IntNum:
cdef yasm_intnum *intn
def __cinit__(self, value, base=None):
cdef unsigned char buf[16]
self.intn = NULL
if isinstance(value, IntNum):
self.intn = yasm_intnum_copy((<IntNum>value).intn)
return
if PyCObject_Check(value):
self.intn = <yasm_intnum *>__get_voidp(value, IntNum)
return
if isinstance(value, str):
if base == 2:
self.intn = yasm_intnum_create_bin(value)
elif base == 8:
self.intn = yasm_intnum_create_oct(value)
elif base == 10 or base is None:
self.intn = yasm_intnum_create_dec(value)
elif base == 16:
self.intn = yasm_intnum_create_hex(value)
elif base == "nasm":
self.intn = yasm_intnum_create_charconst_nasm(value)
else:
raise ValueError("base must be 2, 8, 10, 16, or \"nasm\"")
elif isinstance(value, (int, long)):
_PyLong_AsByteArray(long(value), buf, 16, 1, 1)
self.intn = yasm_intnum_create_sized(buf, 1, 16, 0)
else:
raise ValueError
def __dealloc__(self):
if self.intn != NULL: yasm_intnum_destroy(self.intn)
def __long__(self):
cdef unsigned char buf[16]
yasm_intnum_get_sized(self.intn, buf, 16, 128, 0, 0, 0)
return _PyLong_FromByteArray(buf, 16, 1, 1)
def __repr__(self):
return "IntNum(%d)" % self
def __int__(self): return int(self.__long__())
def __complex__(self): return complex(self.__long__())
def __float__(self): return float(self.__long__())
def __oct__(self): return oct(int(self.__long__()))
def __hex__(self): return hex(int(self.__long__()))
def __add__(x, y): return __intnum_op(x, YASM_EXPR_ADD, y)
def __sub__(x, y): return __intnum_op(x, YASM_EXPR_SUB, y)
def __mul__(x, y): return __intnum_op(x, YASM_EXPR_MUL, y)
def __div__(x, y): return __intnum_op_ex(x, YASM_EXPR_SIGNDIV, y)
def __floordiv__(x, y): return __intnum_op_ex(x, YASM_EXPR_SIGNDIV, y)
def __mod__(x, y): return __intnum_op_ex(x, YASM_EXPR_SIGNMOD, y)
def __neg__(self): return __intnum_op(self, YASM_EXPR_NEG, None)
def __pos__(self): return self
def __abs__(self):
if yasm_intnum_sign(self.intn) >= 0: return IntNum(self)
else: return __intnum_op(self, YASM_EXPR_NEG, None)
def __nonzero__(self): return not yasm_intnum_is_zero(self.intn)
def __invert__(self): return __intnum_op(self, YASM_EXPR_NOT, None)
def __lshift__(x, y): return __intnum_op(x, YASM_EXPR_SHL, y)
def __rshift__(x, y): return __intnum_op(x, YASM_EXPR_SHR, y)
def __and__(x, y): return __intnum_op(x, YASM_EXPR_AND, y)
def __or__(x, y): return __intnum_op(x, YASM_EXPR_OR, y)
def __xor__(x, y): return __intnum_op(x, YASM_EXPR_XOR, y)
cdef object __op(self, yasm_expr_op op, object x):
if isinstance(x, IntNum):
rhs = x
else:
rhs = IntNum(x)
yasm_intnum_calc(self.intn, op, (<IntNum>rhs).intn)
return self
def __iadd__(self, x): return self.__op(YASM_EXPR_ADD, x)
def __isub__(self, x): return self.__op(YASM_EXPR_SUB, x)
def __imul__(self, x): return self.__op(YASM_EXPR_MUL, x)
def __idiv__(self, x): return self.__op(YASM_EXPR_SIGNDIV, x)
def __ifloordiv__(self, x): return self.__op(YASM_EXPR_SIGNDIV, x)
def __imod__(self, x): return self.__op(YASM_EXPR_MOD, x)
def __ilshift__(self, x): return self.__op(YASM_EXPR_SHL, x)
def __irshift__(self, x): return self.__op(YASM_EXPR_SHR, x)
def __iand__(self, x): return self.__op(YASM_EXPR_AND, x)
def __ior__(self, x): return self.__op(YASM_EXPR_OR, x)
def __ixor__(self, x): return self.__op(YASM_EXPR_XOR, x)
def __cmp__(self, x):
cdef yasm_intnum *t
t = yasm_intnum_copy(self.intn)
if isinstance(x, IntNum):
rhs = x
else:
rhs = IntNum(x)
yasm_intnum_calc(t, YASM_EXPR_SUB, (<IntNum>rhs).intn)
result = yasm_intnum_sign(t)
yasm_intnum_destroy(t)
return result
def __richcmp__(x, y, op):
cdef yasm_expr_op aop
if op == 0: aop = YASM_EXPR_LT
elif op == 1: aop = YASM_EXPR_LE
elif op == 2: aop = YASM_EXPR_EQ
elif op == 3: aop = YASM_EXPR_NE
elif op == 4: aop = YASM_EXPR_GT
elif op == 5: aop = YASM_EXPR_GE
else: raise NotImplementedError
v = __intnum_op(x, aop, y)
return bool(not yasm_intnum_is_zero((<IntNum>v).intn))