def project_one(subexpr):
from pymbolic.primitives import is_constant
if self.dd_in == self.dd_out:
# no-op projection, go away
return subexpr
elif is_constant(subexpr):
return subexpr
else:
from grudge.symbolic.primitives import OperatorBinding
return OperatorBinding(self, subexpr)
def bind_one(subexpr):
if is_zero(subexpr):
return subexpr
else:
from grudge.symbolic.primitives import OperatorBinding
return OperatorBinding(self, subexpr)