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intobject.py
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intobject.py
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import math
import operator
from rpython.rlib import rfloat
from rpython.rlib.debug import check_regular_int
from rpython.rlib.objectmodel import specialize
from rpython.rlib.rarithmetic import (r_uint, r_longlong, r_ulonglong,
ovfcheck, LONG_BIT)
from rpython.rlib.rbigint import rbigint
from rpython.rlib.rfloat import round_away
from rpython.rtyper.lltypesystem import lltype, rffi
from topaz.coerce import Coerce
from topaz.module import ClassDef
from topaz.objects.floatobject import W_FloatObject
from topaz.objects.integerobject import W_IntegerObject
from topaz.objects.numericobject import W_NumericObject
from topaz.objects.objectobject import W_RootObject
from topaz.system import IS_WINDOWS
class FixnumStorage(object):
def __init__(self, space):
self.storages = {}
def get_or_create(self, space, intvalue):
try:
storage = self.storages[intvalue]
except KeyError:
self.storages[intvalue] = storage = space.send(space.w_object, "new")
return storage
class W_FixnumObject(W_RootObject):
_immutable_fields_ = ["intvalue"]
classdef = ClassDef("Fixnum", W_IntegerObject.classdef)
def __init__(self, space, intvalue):
check_regular_int(intvalue)
self.intvalue = intvalue
def __deepcopy__(self, memo):
obj = super(W_FixnumObject, self).__deepcopy__(memo)
obj.intvalue = self.intvalue
return obj
def int_w(self, space):
return self.intvalue
def bigint_w(self, space):
return rbigint.fromint(self.intvalue)
def float_w(self, space):
return float(self.intvalue)
def intmask_w(self, space):
return self.intvalue
def uintmask_w(self, space):
return r_uint(self.intvalue)
def longlongmask_w(self, space):
return r_longlong(self.intvalue)
def ulonglongmask_w(self, space):
return r_ulonglong(self.intvalue)
def find_instance_var(self, space, name):
storage = space.fromcache(FixnumStorage).get_or_create(space, self.intvalue)
return storage.find_instance_var(space, name)
def set_instance_var(self, space, name, w_value):
storage = space.fromcache(FixnumStorage).get_or_create(space, self.intvalue)
storage.set_instance_var(space, name, w_value)
@classdef.method("extend")
@classdef.method("singleton_class")
def method_singleton_class(self, space):
raise space.error(space.w_TypeError, "can't define singleton")
@classdef.method("inspect")
@classdef.method("to_s")
def method_to_s(self, space):
return space.newstr_fromstr(str(self.intvalue))
@classdef.method("to_f")
def method_to_f(self, space):
return space.newfloat(float(self.intvalue))
@classdef.method("to_i")
@classdef.method("to_int")
def method_to_i(self, space):
return self
def new_binop(classdef, name, func):
@classdef.method(name)
def method(self, space, w_other):
if space.is_kind_of(w_other, space.w_fixnum):
other = space.int_w(w_other)
try:
value = ovfcheck(func(self.intvalue, other))
except OverflowError:
return space.send(
space.newbigint_fromint(self.intvalue), name,
[w_other]
)
else:
return space.newint(value)
elif space.is_kind_of(w_other, space.w_bignum):
return space.send(space.newbigint_fromint(self.intvalue), name, [w_other])
elif space.is_kind_of(w_other, space.w_float):
return space.newfloat(func(self.intvalue, space.float_w(w_other)))
else:
return W_NumericObject.retry_binop_coercing(space, self, w_other, name)
method.__name__ = "method_%s" % func.__name__
return method
method_add = new_binop(classdef, "+", operator.add)
method_sub = new_binop(classdef, "-", operator.sub)
method_mul = new_binop(classdef, "*", operator.mul)
def raise_zero_division_error(self, space):
raise space.error(space.w_ZeroDivisionError, "divided by 0")
def divide(self, space, w_other):
if space.is_kind_of(w_other, space.w_fixnum):
other = space.int_w(w_other)
try:
return space.newint(self.intvalue / other)
except ZeroDivisionError:
self.raise_zero_division_error(space)
elif space.is_kind_of(w_other, space.w_bignum):
return space.send(space.newbigint_fromint(self.intvalue), "/", [w_other])
elif space.is_kind_of(w_other, space.w_float):
return space.send(space.newfloat(space.float_w(self)), "/", [w_other])
else:
return W_NumericObject.retry_binop_coercing(space, self, w_other, "/")
@classdef.method("/")
def method_divide(self, space, w_other):
return self.divide(space, w_other)
@classdef.method("div")
def method_div(self, space, w_other):
if space.is_kind_of(w_other, space.w_float):
if space.float_w(w_other) == 0.0:
self.raise_zero_division_error(space)
else:
w_float = space.send(
space.newfloat(space.float_w(self)),
"/",
[w_other]
)
w_float = space.newfloat(math.floor(Coerce.float(space, w_float)))
return space.send(w_float, "to_i")
else:
return self.divide(space, w_other)
@classdef.method("fdiv")
def method_fdiv(self, space, w_other):
if space.is_kind_of(w_other, space.w_fixnum):
other = space.int_w(w_other)
try:
res = float(self.intvalue) / float(other)
except ZeroDivisionError:
return space.newfloat(rfloat.copysign(rfloat.INFINITY, float(self.intvalue)))
else:
return space.newfloat(res)
elif space.is_kind_of(w_other, space.w_bignum):
return space.send(space.newbigint_fromint(self.intvalue), "fdiv", [w_other])
elif space.is_kind_of(w_other, space.w_float):
other = space.float_w(w_other)
try:
res = float(self.intvalue) / other
except ZeroDivisionError:
return space.newfloat(rfloat.copysign(rfloat.INFINITY, float(self.intvalue)))
else:
return space.newfloat(res)
else:
return W_NumericObject.retry_binop_coercing(space, self, w_other, "fdiv")
@classdef.method("**")
def method_pow(self, space, w_other):
if space.is_kind_of(w_other, space.w_fixnum):
return self.method_pow_int_impl(space, w_other)
elif space.getclass(w_other) is space.w_float:
return space.send(
space.newfloat(float(self.intvalue)), "**", [w_other]
)
elif space.getclass(w_other) is space.w_bignum:
return space.send(
space.newbigint_fromint(self.intvalue), "**",
[w_other]
)
else:
raise space.error(space.w_TypeError,
"%s can't be coerced into Fixnum" % space.obj_to_s(space.getclass(w_other))
)
def method_pow_int_impl(self, space, w_other):
exp = space.int_w(w_other)
temp = self.intvalue
if exp > 0:
ix = 1
try:
while exp > 0:
if exp & 1:
ix = ovfcheck(ix * temp)
exp >>= 1
if exp == 0:
break
temp = ovfcheck(temp * temp)
except OverflowError:
return space.send(
space.newbigint_fromint(self.intvalue), "**",
[w_other]
)
return space.newint(ix)
else:
return space.send(space.newfloat(float(temp)), "**", [w_other])
@classdef.method("divmod")
def method_divmod(self, space, w_other):
if space.is_kind_of(w_other, space.w_float):
return space.send(self.method_to_f(space), "divmod", [w_other])
elif space.is_kind_of(w_other, space.w_bignum):
return space.send(space.newbigint_fromint(self.intvalue), "divmod", [w_other])
elif space.is_kind_of(w_other, space.w_fixnum):
y = space.int_w(w_other)
if y == 0:
raise space.error(
space.w_ZeroDivisionError,
"devided by 0"
)
mod = space.int_w(self.method_mod_int_impl(space, y))
div = (self.intvalue - mod) / y
return space.newarray([space.newint(int(round_away(div))), space.newfloat(mod)])
else:
raise space.error(
space.w_TypeError,
"%s can't be coerced into Fixnum" % (
space.obj_to_s(space.getclass(w_other))
)
)
@classdef.method("%")
@classdef.method("modulo")
def method_mod(self, space, w_other):
if space.is_kind_of(w_other, space.w_fixnum):
return self.method_mod_int_impl(space, space.int_w(w_other))
elif space.is_kind_of(w_other, space.w_float):
return space.send(self.method_to_f(space), "%", [w_other])
elif space.is_kind_of(w_other, space.w_bignum):
return space.send(space.newbigint_fromint(self.intvalue), "%", [w_other])
else:
raise space.error(
space.w_TypeError,
"%s can't be coerced into Fixnum" % (
space.obj_to_s(space.getclass(w_other))
)
)
def method_mod_int_impl(self, space, other):
if other == 0:
raise space.error(space.w_ZeroDivisionError, "devided by 0")
return space.newint(self.intvalue % other)
@classdef.method("<<", other="int")
def method_left_shift(self, space, other):
if other < 0:
return space.newint(self.intvalue >> -other)
elif other >= LONG_BIT:
return space.send(
space.newbigint_fromint(self.intvalue), "<<",
[space.newint(other)]
)
else:
try:
value = ovfcheck(self.intvalue << other)
except OverflowError:
return space.send(
space.newbigint_fromint(self.intvalue), "<<",
[space.newint(other)]
)
else:
return space.newint(value)
@classdef.method(">>", other="int")
def method_right_shift(self, space, other):
if other < 0:
return space.newint(self.intvalue << -other)
else:
return space.newint(self.intvalue >> other)
def new_bitwise_op(classdef, name, func):
@classdef.method(name)
def method(self, space, w_other):
w_other = space.convert_type(w_other, space.w_integer, "to_int")
if space.is_kind_of(w_other, space.w_fixnum):
other = space.int_w(w_other)
return space.newint(func(self.intvalue, other))
elif space.is_kind_of(w_other, space.w_bignum):
return space.send(space.newbigint_fromint(self.intvalue), name, [w_other])
else:
return W_NumericObject.retry_binop_coercing(space, self, w_other, name)
method.__name__ = "method_%s" % func.__name__
return method
method_and = new_bitwise_op(classdef, "&", operator.and_)
method_or = new_bitwise_op(classdef, "|", operator.or_)
method_xor = new_bitwise_op(classdef, "^", operator.xor)
@classdef.method("~")
def method_invert(self, space):
return space.newint(~self.intvalue)
@classdef.method("==")
@classdef.method("equal?")
def method_eq(self, space, w_other):
if isinstance(w_other, W_FixnumObject):
return space.newbool(self.comparator(space, space.int_w(w_other)) == 0)
elif isinstance(w_other, W_FloatObject):
return space.newbool(self.comparator(space, space.float_w(w_other)) == 0)
else:
return space.send(w_other, "==", [self])
@classdef.method("!=")
def method_ne(self, space, w_other):
return space.newbool(space.send(self, "==", [w_other]) is space.w_false)
def new_bool_op(classdef, name, func):
@classdef.method(name)
def method(self, space, w_other):
if space.is_kind_of(w_other, space.w_float):
return space.newbool(func(self.intvalue, space.float_w(w_other)))
elif space.is_kind_of(w_other, space.w_fixnum):
return space.newbool(func(self.intvalue, space.int_w(w_other)))
else:
return W_NumericObject.retry_binop_coercing(space, self, w_other, name, raise_error=True)
method.__name__ = "method_%s" % func.__name__
return method
method_lt = new_bool_op(classdef, "<", operator.lt)
method_lte = new_bool_op(classdef, "<=", operator.le)
method_gt = new_bool_op(classdef, ">", operator.gt)
method_gte = new_bool_op(classdef, ">=", operator.ge)
@classdef.method("<=>")
def method_comparator(self, space, w_other):
if isinstance(w_other, W_FixnumObject):
return space.newint(self.comparator(space, space.int_w(w_other)))
elif isinstance(w_other, W_FloatObject):
return space.newint(self.comparator(space, space.float_w(w_other)))
else:
return space.w_nil
@specialize.argtype(2)
def comparator(self, space, other):
if self.intvalue < other:
return -1
elif self.intvalue == other:
return 0
elif self.intvalue > other:
return 1
return 1
@classdef.method("hash")
def method_hash(self, space):
return self
if IS_WINDOWS:
@classdef.method("size")
def method_size(self, space):
# RPython translation is always 32bit on Windows
return space.newint(4)
else:
@classdef.method("size")
def method_size(self, space):
return space.newint(rffi.sizeof(lltype.typeOf(self.intvalue)))
@classdef.method("coerce")
def method_coerce(self, space, w_other):
if space.getclass(w_other) is space.getclass(self):
return space.newarray([w_other, self])
else:
return space.newarray([space.send(self, "Float", [w_other]), self])
@classdef.method("chr")
def method_chr(self, space):
if self.intvalue > 255 or self.intvalue < 0:
raise space.error(space.w_RangeError, "%d out of char range" % self.intvalue)
else:
return space.newstr_fromstr(chr(self.intvalue))
@classdef.method("[]", idx="int")
def method_subscript(self, space, idx):
if not 0 <= idx < LONG_BIT:
return space.newint(0)
return space.newint(int(bool(self.intvalue & (1 << idx))))