# 'name' is the variable's name, in the context of the _template_.
# 'value' is some object whose __str__() method is called when the C code is
#    to be generated (possibly other times too).
# if 'value' is left blank, then it will be generated automatically as a
#    string by adding some unique value to 'prefix'.
# 'type' only matters if 'value' is some sort of C variable, which needs to be
#    allocated explicitly
class C_Name:
	(most of existing code for generating names can be reused)
	def __init__(self, name=None, value=None, prefix="v", type=(DEC)):

class Namespace:
	def __init__(self, names, values)
	def add(self, k, v):
	def remove(self, k):
	def set(self, k, v):
	def eval_template(self, template):


class C_Code:
	def __init__(self, 
		self.argnames - needs to be set somehow
	def __call__(self, *args):
		self.tempmap

class Layer(C_Name):
	def __init__(self,*a,**kw): C_Name(self,*a,**kw) # necessary?
	def __add__, __sub__, etc.
		return C_Something(*args)