def inverse_eval(x):
if isinstance(x, Value):
result = x.inverse_eval()
elif isinstance(x, basestring) or isinstance(x, _NUMBER_TYPES):
result = x
elif isinstance(x, tuple):
if None in x: # NULL ELEMENT
(full, nullvalue) = inversePartial(self)
result = PARTIAL_SYMBOL.structure(inverse_eval(full),
inverse_eval(nullvalue))
else:
elts = [inverse_eval(elt) for elt in x]
if None in elts:
result = None # if we allow inverse_eval to return None
else:
result = tuple(elts)
else:
result = reg_inverse_eval(x)
if result is None:
try:
info = str(x)
except:
info = "object of type %r" % type(x)
msg = "Cannot run inverse_eval on " + info
print "WARNING:", msg
return INVALID_SYMBOL.structure(msg)
else:
return result
def inverse_eval(x):
if isinstance(x, Value):
result = x.inverse_eval()
elif isinstance(x, basestring) or isinstance(x, _NUMBER_TYPES):
result = x
elif isinstance(x, tuple):
if None in x: # NULL ELEMENT
(full, nullvalue) = inversePartial(self)
result = PARTIAL_SYMBOL.structure(inverse_eval(full), inverse_eval(nullvalue))
else:
elts = [inverse_eval(elt) for elt in x]
if None in elts:
result = None # if we allow inverse_eval to return None
else:
result = tuple(elts)
else:
result = reg_inverse_eval(x)
if result is None:
try:
info = str(x)
except:
info = "object of type %r" % type(x)
msg = "Cannot run inverse_eval on " + info
print "WARNING:", msg
return INVALID_SYMBOL.structure(msg)
else:
return result
def inverse_eval(self):
if None in self: # NULL ELEMENT
from spark.lang.builtin import inversePartial, PARTIAL_SYMBOL
(full, nullvalue) = inversePartial(self)
return PARTIAL_SYMBOL.structure(inverse_eval(full), inverse_eval(nullvalue))
def switch(arg):
ie = inverse_eval(arg)
if isStructure(ie):
if ie.functor == BACKQUOTE_SYMBOL:
return ie[0]
elif isinstance(ie, int) or isinstance(ie, float) or isinstance(ie, basestring): # should use Integer, etc.
return ie
# otherwise
return PREFIX_COMMA_SYMBOL.structure(ie)
args = [switch(arg) for arg in self._args]
return BACKQUOTE_SYMBOL.structure(_Structure(self.functor, args))
def inverse_eval(self):
if None in self: # NULL ELEMENT
from spark.lang.builtin import inversePartial, PARTIAL_SYMBOL
(full, nullvalue) = inversePartial(self)
return PARTIAL_SYMBOL.structure(inverse_eval(full),
inverse_eval(nullvalue))
def switch(arg):
ie = inverse_eval(arg)
if isStructure(ie):
if ie.functor == BACKQUOTE_SYMBOL:
return ie[0]
elif isinstance(ie, int) or isinstance(ie, float) \
or isinstance(ie, basestring): # should use Integer, etc.
return ie
# otherwise
return PREFIX_COMMA_SYMBOL.structure(ie)
args = [switch(arg) for arg in self._args]
return BACKQUOTE_SYMBOL.structure(_Structure(self.functor, args))
