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1102 | """ This is a set of tools for standalone compiling of numpy expressions.
It should not be imported by the module itself
"""
import re
import py
from pypy.interpreter import special
from pypy.interpreter.baseobjspace import InternalSpaceCache, W_Root, ObjSpace
from pypy.interpreter.error import oefmt
from rpython.rlib.objectmodel import specialize, instantiate
from rpython.rlib.nonconst import NonConstant
from rpython.rlib.rarithmetic import base_int
from pypy.module.micronumpy import boxes, ufuncs
from pypy.module.micronumpy.arrayops import where
from pypy.module.micronumpy.ndarray import W_NDimArray
from pypy.module.micronumpy.ctors import array
from pypy.module.micronumpy.descriptor import get_dtype_cache
from pypy.interpreter.miscutils import ThreadLocals, make_weak_value_dictionary
from pypy.interpreter.executioncontext import (ExecutionContext, ActionFlag,
UserDelAction)
from pypy.interpreter.pyframe import PyFrame
class BogusBytecode(Exception):
pass
class ArgumentMismatch(Exception):
pass
class ArgumentNotAnArray(Exception):
pass
class WrongFunctionName(Exception):
pass
class TokenizerError(Exception):
pass
class BadToken(Exception):
pass
SINGLE_ARG_FUNCTIONS = ["sum", "prod", "max", "min", "all", "any",
"unegative", "flat", "tostring", "count_nonzero",
"argsort", "cumsum", "logical_xor_reduce"]
TWO_ARG_FUNCTIONS = ["dot", 'take', 'searchsorted', 'multiply']
TWO_ARG_FUNCTIONS_OR_NONE = ['view', 'astype', 'reshape']
THREE_ARG_FUNCTIONS = ['where']
class W_TypeObject(W_Root):
def __init__(self, name):
self.name = name
def lookup(self, name):
return self.getdictvalue(self, name)
def getname(self, space):
return self.name
class FakeSpace(ObjSpace):
w_ValueError = W_TypeObject("ValueError")
w_TypeError = W_TypeObject("TypeError")
w_IndexError = W_TypeObject("IndexError")
w_OverflowError = W_TypeObject("OverflowError")
w_NotImplementedError = W_TypeObject("NotImplementedError")
w_AttributeError = W_TypeObject("AttributeError")
w_StopIteration = W_TypeObject("StopIteration")
w_KeyError = W_TypeObject("KeyError")
w_SystemExit = W_TypeObject("SystemExit")
w_KeyboardInterrupt = W_TypeObject("KeyboardInterrupt")
w_VisibleDeprecationWarning = W_TypeObject("VisibleDeprecationWarning")
w_None = None
w_bool = W_TypeObject("bool")
w_int = W_TypeObject("int")
w_float = W_TypeObject("float")
w_list = W_TypeObject("list")
w_long = W_TypeObject("long")
w_tuple = W_TypeObject('tuple')
w_slice = W_TypeObject("slice")
w_str = W_TypeObject("str")
w_unicode = W_TypeObject("unicode")
w_complex = W_TypeObject("complex")
w_dict = W_TypeObject("dict")
w_object = W_TypeObject("object")
w_buffer = W_TypeObject("buffer")
w_type = W_TypeObject("type")
def __init__(self, config=None):
"""NOT_RPYTHON"""
self.fromcache = InternalSpaceCache(self).getorbuild
self.w_Ellipsis = special.Ellipsis()
self.w_NotImplemented = special.NotImplemented()
if config is None:
from pypy.config.pypyoption import get_pypy_config
config = get_pypy_config(translating=False)
self.config = config
self.interned_strings = make_weak_value_dictionary(self, str, W_Root)
self.builtin = DictObject({})
self.FrameClass = PyFrame
self.threadlocals = ThreadLocals()
self.actionflag = ActionFlag() # changed by the signal module
self.check_signal_action = None # changed by the signal module
def _freeze_(self):
return True
def is_none(self, w_obj):
return w_obj is None or w_obj is self.w_None
def issequence_w(self, w_obj):
return isinstance(w_obj, ListObject) or isinstance(w_obj, W_NDimArray)
def len(self, w_obj):
if isinstance(w_obj, ListObject):
return self.wrap(len(w_obj.items))
elif isinstance(w_obj, DictObject):
return self.wrap(len(w_obj.items))
raise NotImplementedError
def getattr(self, w_obj, w_attr):
assert isinstance(w_attr, StringObject)
if isinstance(w_obj, DictObject):
return w_obj.getdictvalue(self, w_attr)
return None
def issubtype_w(self, w_sub, w_type):
is_root(w_type)
return NonConstant(True)
def isinstance_w(self, w_obj, w_tp):
try:
return w_obj.tp == w_tp
except AttributeError:
return False
def iter(self, w_iter):
if isinstance(w_iter, ListObject):
raise NotImplementedError
#return IterObject(space, w_iter.items)
elif isinstance(w_iter, DictObject):
return IterDictObject(self, w_iter)
def next(self, w_iter):
return w_iter.next()
def contains(self, w_iter, w_key):
if isinstance(w_iter, DictObject):
return self.wrap(w_key in w_iter.items)
raise NotImplementedError
def decode_index4(self, w_idx, size):
if isinstance(w_idx, IntObject):
return (self.int_w(w_idx), 0, 0, 1)
else:
assert isinstance(w_idx, SliceObject)
start, stop, step = w_idx.start, w_idx.stop, w_idx.step
if step == 0:
return (0, size, 1, size)
if start < 0:
start += size
if stop < 0:
stop += size + 1
if step < 0:
start, stop = stop, start
start -= 1
stop -= 1
lgt = (stop - start + 1) / step + 1
else:
lgt = (stop - start - 1) / step + 1
return (start, stop, step, lgt)
def unicode_from_object(self, w_item):
# XXX
return StringObject("")
@specialize.argtype(1)
def wrap(self, obj):
if isinstance(obj, float):
return FloatObject(obj)
elif isinstance(obj, bool):
return BoolObject(obj)
elif isinstance(obj, int):
return IntObject(obj)
elif isinstance(obj, base_int):
return LongObject(obj)
elif isinstance(obj, W_Root):
return obj
elif isinstance(obj, str):
return StringObject(obj)
raise NotImplementedError
def newlist(self, items):
return ListObject(items)
def newcomplex(self, r, i):
return ComplexObject(r, i)
def newfloat(self, f):
return self.float(f)
def newslice(self, start, stop, step):
return SliceObject(self.int_w(start), self.int_w(stop),
self.int_w(step))
def le(self, w_obj1, w_obj2):
assert isinstance(w_obj1, boxes.W_GenericBox)
assert isinstance(w_obj2, boxes.W_GenericBox)
return w_obj1.descr_le(self, w_obj2)
def lt(self, w_obj1, w_obj2):
assert isinstance(w_obj1, boxes.W_GenericBox)
assert isinstance(w_obj2, boxes.W_GenericBox)
return w_obj1.descr_lt(self, w_obj2)
def ge(self, w_obj1, w_obj2):
assert isinstance(w_obj1, boxes.W_GenericBox)
assert isinstance(w_obj2, boxes.W_GenericBox)
return w_obj1.descr_ge(self, w_obj2)
def add(self, w_obj1, w_obj2):
assert isinstance(w_obj1, boxes.W_GenericBox)
assert isinstance(w_obj2, boxes.W_GenericBox)
return w_obj1.descr_add(self, w_obj2)
def sub(self, w_obj1, w_obj2):
return self.wrap(1)
def mul(self, w_obj1, w_obj2):
assert isinstance(w_obj1, boxes.W_GenericBox)
assert isinstance(w_obj2, boxes.W_GenericBox)
return w_obj1.descr_mul(self, w_obj2)
def pow(self, w_obj1, w_obj2, _):
return self.wrap(1)
def neg(self, w_obj1):
return self.wrap(0)
def repr(self, w_obj1):
return self.wrap('fake')
def getitem(self, obj, index):
if isinstance(obj, DictObject):
w_dict = obj.getdict(self)
if w_dict is not None:
try:
return w_dict[index]
except KeyError as e:
raise oefmt(self.w_KeyError, "key error")
assert isinstance(obj, ListObject)
assert isinstance(index, IntObject)
return obj.items[index.intval]
def listview(self, obj, number=-1):
assert isinstance(obj, ListObject)
if number != -1:
assert number == 2
return [obj.items[0], obj.items[1]]
return obj.items
fixedview = listview
def float(self, w_obj):
if isinstance(w_obj, FloatObject):
return w_obj
assert isinstance(w_obj, boxes.W_GenericBox)
return self.float(w_obj.descr_float(self))
def float_w(self, w_obj, allow_conversion=True):
assert isinstance(w_obj, FloatObject)
return w_obj.floatval
def int_w(self, w_obj, allow_conversion=True):
if isinstance(w_obj, IntObject):
return w_obj.intval
elif isinstance(w_obj, FloatObject):
return int(w_obj.floatval)
elif isinstance(w_obj, SliceObject):
raise oefmt(self.w_TypeError, "slice.")
raise NotImplementedError
def unpackcomplex(self, w_obj):
if isinstance(w_obj, ComplexObject):
return w_obj.r, w_obj.i
raise NotImplementedError
def index(self, w_obj):
return self.wrap(self.int_w(w_obj))
def str_w(self, w_obj):
if isinstance(w_obj, StringObject):
return w_obj.v
raise NotImplementedError
def unicode_w(self, w_obj):
# XXX
if isinstance(w_obj, StringObject):
return unicode(w_obj.v)
raise NotImplementedError
def int(self, w_obj):
if isinstance(w_obj, IntObject):
return w_obj
assert isinstance(w_obj, boxes.W_GenericBox)
return self.int(w_obj.descr_int(self))
def long(self, w_obj):
if isinstance(w_obj, LongObject):
return w_obj
assert isinstance(w_obj, boxes.W_GenericBox)
return self.int(w_obj.descr_long(self))
def str(self, w_obj):
if isinstance(w_obj, StringObject):
return w_obj
assert isinstance(w_obj, boxes.W_GenericBox)
return self.str(w_obj.descr_str(self))
def is_true(self, w_obj):
assert isinstance(w_obj, BoolObject)
return bool(w_obj.intval)
def gt(self, w_lhs, w_rhs):
return BoolObject(self.int_w(w_lhs) > self.int_w(w_rhs))
def lt(self, w_lhs, w_rhs):
return BoolObject(self.int_w(w_lhs) < self.int_w(w_rhs))
def is_w(self, w_obj, w_what):
return w_obj is w_what
def eq_w(self, w_obj, w_what):
return w_obj == w_what
def issubtype(self, w_type1, w_type2):
return BoolObject(True)
def type(self, w_obj):
if self.is_none(w_obj):
return self.w_None
try:
return w_obj.tp
except AttributeError:
if isinstance(w_obj, W_NDimArray):
return W_NDimArray
return self.w_None
def lookup(self, w_obj, name):
w_type = self.type(w_obj)
if not self.is_none(w_type):
return w_type.lookup(name)
def gettypefor(self, w_obj):
return W_TypeObject(w_obj.typedef.name)
def call_function(self, tp, w_dtype, *args):
if tp is self.w_float:
if isinstance(w_dtype, boxes.W_Float64Box):
return FloatObject(float(w_dtype.value))
if isinstance(w_dtype, boxes.W_Float32Box):
return FloatObject(float(w_dtype.value))
if isinstance(w_dtype, boxes.W_Int64Box):
return FloatObject(float(int(w_dtype.value)))
if isinstance(w_dtype, boxes.W_Int32Box):
return FloatObject(float(int(w_dtype.value)))
if isinstance(w_dtype, boxes.W_Int16Box):
return FloatObject(float(int(w_dtype.value)))
if isinstance(w_dtype, boxes.W_Int8Box):
return FloatObject(float(int(w_dtype.value)))
if isinstance(w_dtype, IntObject):
return FloatObject(float(w_dtype.intval))
if tp is self.w_int:
if isinstance(w_dtype, FloatObject):
return IntObject(int(w_dtype.floatval))
return w_dtype
@specialize.arg(2)
def call_method(self, w_obj, s, *args):
# XXX even the hacks have hacks
if s == 'size': # used in _array() but never called by tests
return IntObject(0)
if s == '__buffer__':
# descr___buffer__ does not exist on W_Root
return self.w_None
return getattr(w_obj, 'descr_' + s)(self, *args)
@specialize.arg(1)
def interp_w(self, tp, what):
assert isinstance(what, tp)
return what
def allocate_instance(self, klass, w_subtype):
return instantiate(klass)
def newtuple(self, list_w):
return ListObject(list_w)
def newdict(self, module=True):
return DictObject({})
def newint(self, i):
if isinstance(i, IntObject):
return i
return IntObject(i)
def setitem(self, obj, index, value):
obj.items[index] = value
def exception_match(self, w_exc_type, w_check_class):
assert isinstance(w_exc_type, W_TypeObject)
assert isinstance(w_check_class, W_TypeObject)
return w_exc_type.name == w_check_class.name
def warn(self, w_msg, w_warn_type):
pass
def is_root(w_obj):
assert isinstance(w_obj, W_Root)
is_root.expecting = W_Root
class FloatObject(W_Root):
tp = FakeSpace.w_float
def __init__(self, floatval):
self.floatval = floatval
class BoolObject(W_Root):
tp = FakeSpace.w_bool
def __init__(self, boolval):
self.intval = boolval
FakeSpace.w_True = BoolObject(True)
FakeSpace.w_False = BoolObject(False)
class IntObject(W_Root):
tp = FakeSpace.w_int
def __init__(self, intval):
self.intval = intval
class LongObject(W_Root):
tp = FakeSpace.w_long
def __init__(self, intval):
self.intval = intval
class ListObject(W_Root):
tp = FakeSpace.w_list
def __init__(self, items):
self.items = items
class DictObject(W_Root):
tp = FakeSpace.w_dict
def __init__(self, items):
self.items = items
def getdict(self, space):
return self.items
def getdictvalue(self, space, key):
return self.items[key]
def descr_memoryview(self, space, buf):
raise oefmt(space.w_TypeError, "error")
class IterDictObject(W_Root):
def __init__(self, space, w_dict):
self.space = space
self.items = w_dict.items.items()
self.i = 0
def __iter__(self):
return self
def next(self):
space = self.space
if self.i >= len(self.items):
raise oefmt(space.w_StopIteration, "stop iteration")
self.i += 1
return self.items[self.i-1][0]
class SliceObject(W_Root):
tp = FakeSpace.w_slice
def __init__(self, start, stop, step):
self.start = start
self.stop = stop
self.step = step
class StringObject(W_Root):
tp = FakeSpace.w_str
def __init__(self, v):
self.v = v
class ComplexObject(W_Root):
tp = FakeSpace.w_complex
def __init__(self, r, i):
self.r = r
self.i = i
class InterpreterState(object):
def __init__(self, code):
self.code = code
self.variables = {}
self.results = []
def run(self, space):
self.space = space
for stmt in self.code.statements:
stmt.execute(self)
class Node(object):
def __eq__(self, other):
return (self.__class__ == other.__class__ and
self.__dict__ == other.__dict__)
def __ne__(self, other):
return not self == other
def wrap(self, space):
raise NotImplementedError
def execute(self, interp):
raise NotImplementedError
class Assignment(Node):
def __init__(self, name, expr):
self.name = name
self.expr = expr
def execute(self, interp):
interp.variables[self.name] = self.expr.execute(interp)
def __repr__(self):
return "%r = %r" % (self.name, self.expr)
class ArrayAssignment(Node):
def __init__(self, name, index, expr):
self.name = name
self.index = index
self.expr = expr
def execute(self, interp):
arr = interp.variables[self.name]
w_index = self.index.execute(interp)
# cast to int
if isinstance(w_index, FloatObject):
w_index = IntObject(int(w_index.floatval))
w_val = self.expr.execute(interp)
assert isinstance(arr, W_NDimArray)
arr.descr_setitem(interp.space, w_index, w_val)
def __repr__(self):
return "%s[%r] = %r" % (self.name, self.index, self.expr)
class Variable(Node):
def __init__(self, name):
self.name = name.strip(" ")
def execute(self, interp):
if self.name == 'None':
return None
return interp.variables[self.name]
def __repr__(self):
return 'v(%s)' % self.name
class Operator(Node):
def __init__(self, lhs, name, rhs):
self.name = name
self.lhs = lhs
self.rhs = rhs
def execute(self, interp):
w_lhs = self.lhs.execute(interp)
if isinstance(self.rhs, SliceConstant):
w_rhs = self.rhs.wrap(interp.space)
else:
w_rhs = self.rhs.execute(interp)
if not isinstance(w_lhs, W_NDimArray):
# scalar
dtype = get_dtype_cache(interp.space).w_float64dtype
w_lhs = W_NDimArray.new_scalar(interp.space, dtype, w_lhs)
assert isinstance(w_lhs, W_NDimArray)
if self.name == '+':
w_res = w_lhs.descr_add(interp.space, w_rhs)
elif self.name == '*':
w_res = w_lhs.descr_mul(interp.space, w_rhs)
elif self.name == '-':
w_res = w_lhs.descr_sub(interp.space, w_rhs)
elif self.name == '**':
w_res = w_lhs.descr_pow(interp.space, w_rhs)
elif self.name == '->':
if isinstance(w_rhs, FloatObject):
w_rhs = IntObject(int(w_rhs.floatval))
assert isinstance(w_lhs, W_NDimArray)
w_res = w_lhs.descr_getitem(interp.space, w_rhs)
if isinstance(w_rhs, IntObject):
if isinstance(w_res, boxes.W_Float64Box):
print "access", w_lhs, "[", w_rhs.intval, "] => ", float(w_res.value)
if isinstance(w_res, boxes.W_Float32Box):
print "access", w_lhs, "[", w_rhs.intval, "] => ", float(w_res.value)
if isinstance(w_res, boxes.W_Int64Box):
print "access", w_lhs, "[", w_rhs.intval, "] => ", int(w_res.value)
if isinstance(w_res, boxes.W_Int32Box):
print "access", w_lhs, "[", w_rhs.intval, "] => ", int(w_res.value)
else:
raise NotImplementedError
if (not isinstance(w_res, W_NDimArray) and
not isinstance(w_res, boxes.W_GenericBox)):
dtype = get_dtype_cache(interp.space).w_float64dtype
w_res = W_NDimArray.new_scalar(interp.space, dtype, w_res)
return w_res
def __repr__(self):
return '(%r %s %r)' % (self.lhs, self.name, self.rhs)
class NumberConstant(Node):
def __init__(self, v):
if isinstance(v, int):
self.v = v
elif isinstance(v, float):
self.v = v
else:
assert isinstance(v, str)
assert len(v) > 0
c = v[-1]
if c == 'f':
self.v = float(v[:-1])
elif c == 'i':
self.v = int(v[:-1])
else:
self.v = float(v)
def __repr__(self):
return "Const(%s)" % self.v
def wrap(self, space):
return space.wrap(self.v)
def execute(self, interp):
return interp.space.wrap(self.v)
class ComplexConstant(Node):
def __init__(self, r, i):
self.r = float(r)
self.i = float(i)
def __repr__(self):
return 'ComplexConst(%s, %s)' % (self.r, self.i)
def wrap(self, space):
return space.newcomplex(self.r, self.i)
def execute(self, interp):
return self.wrap(interp.space)
class RangeConstant(Node):
def __init__(self, v):
self.v = int(v)
def execute(self, interp):
w_list = interp.space.newlist(
[interp.space.wrap(float(i)) for i in range(self.v)]
)
dtype = get_dtype_cache(interp.space).w_float64dtype
return array(interp.space, w_list, w_dtype=dtype, w_order=None)
def __repr__(self):
return 'Range(%s)' % self.v
class Code(Node):
def __init__(self, statements):
self.statements = statements
def __repr__(self):
return "\n".join([repr(i) for i in self.statements])
class ArrayConstant(Node):
def __init__(self, items):
self.items = items
def wrap(self, space):
return space.newlist([item.wrap(space) for item in self.items])
def execute(self, interp):
w_list = self.wrap(interp.space)
return array(interp.space, w_list)
def __repr__(self):
return "[" + ", ".join([repr(item) for item in self.items]) + "]"
class SliceConstant(Node):
def __init__(self, start, stop, step):
self.start = start
self.stop = stop
self.step = step
def wrap(self, space):
return SliceObject(self.start, self.stop, self.step)
def execute(self, interp):
return SliceObject(self.start, self.stop, self.step)
def __repr__(self):
return 'slice(%s,%s,%s)' % (self.start, self.stop, self.step)
class ArrayClass(Node):
def __init__(self):
self.v = W_NDimArray
def execute(self, interp):
return self.v
def __repr__(self):
return '<class W_NDimArray>'
class DtypeClass(Node):
def __init__(self, dt):
self.v = dt
def execute(self, interp):
if self.v == 'int':
dtype = get_dtype_cache(interp.space).w_int64dtype
elif self.v == 'int8':
dtype = get_dtype_cache(interp.space).w_int8dtype
elif self.v == 'int16':
dtype = get_dtype_cache(interp.space).w_int16dtype
elif self.v == 'int32':
dtype = get_dtype_cache(interp.space).w_int32dtype
elif self.v == 'uint':
dtype = get_dtype_cache(interp.space).w_uint64dtype
elif self.v == 'uint8':
dtype = get_dtype_cache(interp.space).w_uint8dtype
elif self.v == 'uint16':
dtype = get_dtype_cache(interp.space).w_uint16dtype
elif self.v == 'uint32':
dtype = get_dtype_cache(interp.space).w_uint32dtype
elif self.v == 'float':
dtype = get_dtype_cache(interp.space).w_float64dtype
elif self.v == 'float32':
dtype = get_dtype_cache(interp.space).w_float32dtype
else:
raise BadToken('unknown v to dtype "%s"' % self.v)
return dtype
def __repr__(self):
return '<class %s dtype>' % self.v
class Execute(Node):
def __init__(self, expr):
self.expr = expr
def __repr__(self):
return repr(self.expr)
def execute(self, interp):
interp.results.append(self.expr.execute(interp))
class FunctionCall(Node):
def __init__(self, name, args):
self.name = name.strip(" ")
self.args = args
def __repr__(self):
return "%s(%s)" % (self.name, ", ".join([repr(arg)
for arg in self.args]))
def execute(self, interp):
arr = self.args[0].execute(interp)
if not isinstance(arr, W_NDimArray):
raise ArgumentNotAnArray
if self.name in SINGLE_ARG_FUNCTIONS:
if len(self.args) != 1 and self.name != 'sum':
raise ArgumentMismatch
if self.name == "sum":
if len(self.args)>1:
var = self.args[1]
if isinstance(var, DtypeClass):
w_res = arr.descr_sum(interp.space, None, var.execute(interp))
else:
w_res = arr.descr_sum(interp.space,
self.args[1].execute(interp))
else:
w_res = arr.descr_sum(interp.space)
elif self.name == "prod":
w_res = arr.descr_prod(interp.space)
elif self.name == "max":
w_res = arr.descr_max(interp.space)
elif self.name == "min":
w_res = arr.descr_min(interp.space)
elif self.name == "any":
w_res = arr.descr_any(interp.space)
elif self.name == "all":
w_res = arr.descr_all(interp.space)
elif self.name == "cumsum":
w_res = arr.descr_cumsum(interp.space)
elif self.name == "logical_xor_reduce":
logical_xor = ufuncs.get(interp.space).logical_xor
w_res = logical_xor.reduce(interp.space, arr, None)
elif self.name == "unegative":
neg = ufuncs.get(interp.space).negative
w_res = neg.call(interp.space, [arr], None, 'unsafe', None)
elif self.name == "cos":
cos = ufuncs.get(interp.space).cos
w_res = cos.call(interp.space, [arr], None, 'unsafe', None)
elif self.name == "flat":
w_res = arr.descr_get_flatiter(interp.space)
elif self.name == "argsort":
w_res = arr.descr_argsort(interp.space)
elif self.name == "tostring":
arr.descr_tostring(interp.space)
w_res = None
else:
assert False # unreachable code
elif self.name in TWO_ARG_FUNCTIONS:
if len(self.args) != 2:
raise ArgumentMismatch
arg = self.args[1].execute(interp)
if not isinstance(arg, W_NDimArray):
raise ArgumentNotAnArray
if self.name == "dot":
w_res = arr.descr_dot(interp.space, arg)
elif self.name == 'multiply':
w_res = arr.descr_mul(interp.space, arg)
elif self.name == 'take':
w_res = arr.descr_take(interp.space, arg)
elif self.name == "searchsorted":
w_res = arr.descr_searchsorted(interp.space, arg,
interp.space.wrap('left'))
else:
assert False # unreachable code
elif self.name in THREE_ARG_FUNCTIONS:
if len(self.args) != 3:
raise ArgumentMismatch
arg1 = self.args[1].execute(interp)
arg2 = self.args[2].execute(interp)
if not isinstance(arg1, W_NDimArray):
raise ArgumentNotAnArray
if not isinstance(arg2, W_NDimArray):
raise ArgumentNotAnArray
if self.name == "where":
w_res = where(interp.space, arr, arg1, arg2)
else:
assert False # unreachable code
elif self.name in TWO_ARG_FUNCTIONS_OR_NONE:
if len(self.args) != 2:
raise ArgumentMismatch
arg = self.args[1].execute(interp)
if self.name == 'view':
w_res = arr.descr_view(interp.space, arg)
elif self.name == 'astype':
w_res = arr.descr_astype(interp.space, arg)
elif self.name == 'reshape':
w_arg = self.args[1]
assert isinstance(w_arg, ArrayConstant)
order = -1
w_res = arr.reshape(interp.space, w_arg.wrap(interp.space), order)
else:
assert False
else:
raise WrongFunctionName
if isinstance(w_res, W_NDimArray):
return w_res
if isinstance(w_res, FloatObject):
dtype = get_dtype_cache(interp.space).w_float64dtype
elif isinstance(w_res, IntObject):
dtype = get_dtype_cache(interp.space).w_int64dtype
elif isinstance(w_res, BoolObject):
dtype = get_dtype_cache(interp.space).w_booldtype
elif isinstance(w_res, boxes.W_GenericBox):
dtype = w_res.get_dtype(interp.space)
else:
dtype = None
return W_NDimArray.new_scalar(interp.space, dtype, w_res)
_REGEXES = [
('-?[\d\.]+(i|f)?', 'number'),
('\[', 'array_left'),
(':', 'colon'),
('\w+', 'identifier'),
('\]', 'array_right'),
('(->)|[\+\-\*\/]+', 'operator'),
('=', 'assign'),
(',', 'comma'),
('\|', 'pipe'),
('\(', 'paren_left'),
('\)', 'paren_right'),
]
REGEXES = []
for r, name in _REGEXES:
REGEXES.append((re.compile(r' *(' + r + ')'), name))
del _REGEXES
class Token(object):
def __init__(self, name, v):
self.name = name
self.v = v
def __repr__(self):
return '(%s, %s)' % (self.name, self.v)
empty = Token('', '')
class TokenStack(object):
def __init__(self, tokens):
self.tokens = tokens
self.c = 0
def pop(self):
token = self.tokens[self.c]
self.c += 1
return token
def get(self, i):
if self.c + i >= len(self.tokens):
return empty
return self.tokens[self.c + i]
def remaining(self):
return len(self.tokens) - self.c
def push(self):
self.c -= 1
def __repr__(self):
return repr(self.tokens[self.c:])
class Parser(object):
def tokenize(self, line):
tokens = []
while True:
for r, name in REGEXES:
m = r.match(line)
if m is not None:
g = m.group(0)
tokens.append(Token(name, g))
line = line[len(g):]
if not line:
return TokenStack(tokens)
break
else:
raise TokenizerError(line)
def parse_number_or_slice(self, tokens):
start_tok = tokens.pop()
if start_tok.name == 'colon':
start = 0
else:
if tokens.get(0).name != 'colon':
return NumberConstant(start_tok.v)
start = int(start_tok.v)
tokens.pop()
if not tokens.get(0).name in ['colon', 'number']:
stop = -1
step = 1
else:
next = tokens.pop()
if next.name == 'colon':
stop = -1
step = int(tokens.pop().v)
else:
stop = int(next.v)
if tokens.get(0).name == 'colon':
tokens.pop()
step = int(tokens.pop().v)
else:
step = 1
return SliceConstant(start, stop, step)
def parse_expression(self, tokens, accept_comma=False):
stack = []
while tokens.remaining():
token = tokens.pop()
if token.name == 'identifier':
if tokens.remaining() and tokens.get(0).name == 'paren_left':
stack.append(self.parse_function_call(token.v, tokens))
elif token.v.strip(' ') == 'ndarray':
stack.append(ArrayClass())
elif token.v.strip(' ') == 'int':
stack.append(DtypeClass('int'))
elif token.v.strip(' ') == 'int8':
stack.append(DtypeClass('int8'))
elif token.v.strip(' ') == 'int16':
stack.append(DtypeClass('int16'))
elif token.v.strip(' ') == 'int32':
stack.append(DtypeClass('int32'))
elif token.v.strip(' ') == 'int64':
stack.append(DtypeClass('int'))
elif token.v.strip(' ') == 'uint':
stack.append(DtypeClass('uint'))
elif token.v.strip(' ') == 'uint8':
stack.append(DtypeClass('uint8'))
elif token.v.strip(' ') == 'uint16':
stack.append(DtypeClass('uint16'))
elif token.v.strip(' ') == 'uint32':
stack.append(DtypeClass('uint32'))
elif token.v.strip(' ') == 'uint64':
stack.append(DtypeClass('uint'))
elif token.v.strip(' ') == 'float':
stack.append(DtypeClass('float'))
elif token.v.strip(' ') == 'float32':
stack.append(DtypeClass('float32'))
elif token.v.strip(' ') == 'float64':
stack.append(DtypeClass('float'))
else:
stack.append(Variable(token.v.strip(' ')))
elif token.name == 'array_left':
stack.append(ArrayConstant(self.parse_array_const(tokens)))
elif token.name == 'operator':
stack.append(Variable(token.v))
elif token.name == 'number' or token.name == 'colon':
tokens.push()
stack.append(self.parse_number_or_slice(tokens))
elif token.name == 'pipe':
stack.append(RangeConstant(tokens.pop().v))
end = tokens.pop()
assert end.name == 'pipe'
elif token.name == 'paren_left':
stack.append(self.parse_complex_constant(tokens))
elif accept_comma and token.name == 'comma':
continue
else:
tokens.push()
break
if accept_comma:
return stack
stack.reverse()
lhs = stack.pop()
while stack:
op = stack.pop()
assert isinstance(op, Variable)
rhs = stack.pop()
lhs = Operator(lhs, op.name, rhs)
return lhs
def parse_function_call(self, name, tokens):
args = []
tokens.pop() # lparen
while tokens.get(0).name != 'paren_right':
args += self.parse_expression(tokens, accept_comma=True)
return FunctionCall(name, args)
def parse_complex_constant(self, tokens):
r = tokens.pop()
assert r.name == 'number'
assert tokens.pop().name == 'comma'
i = tokens.pop()
assert i.name == 'number'
assert tokens.pop().name == 'paren_right'
return ComplexConstant(r.v, i.v)
def parse_array_const(self, tokens):
elems = []
while True:
token = tokens.pop()
if token.name == 'number':
elems.append(NumberConstant(token.v))
elif token.name == 'array_left':
elems.append(ArrayConstant(self.parse_array_const(tokens)))
elif token.name == 'paren_left':
elems.append(self.parse_complex_constant(tokens))
else:
raise BadToken()
token = tokens.pop()
if token.name == 'array_right':
return elems
assert token.name == 'comma'
def parse_statement(self, tokens):
if (tokens.get(0).name == 'identifier' and
tokens.get(1).name == 'assign'):
lhs = tokens.pop().v
tokens.pop()
rhs = self.parse_expression(tokens)
return Assignment(lhs, rhs)
elif (tokens.get(0).name == 'identifier' and
tokens.get(1).name == 'array_left'):
name = tokens.pop().v
tokens.pop()
index = self.parse_expression(tokens)
tokens.pop()
tokens.pop()
return ArrayAssignment(name, index, self.parse_expression(tokens))
return Execute(self.parse_expression(tokens))
def parse(self, code):
statements = []
for line in code.split("\n"):
if '#' in line:
line = line.split('#', 1)[0]
line = line.strip(" ")
if line:
tokens = self.tokenize(line)
statements.append(self.parse_statement(tokens))
return Code(statements)
def numpy_compile(code):
parser = Parser()
return InterpreterState(parser.parse(code))
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