def self_eval(expr, target, link, env, ctable):
"Generate code that evaluates expr and places the result in target."
if type(expr) == 'sym':
return symbol(expr, target, link, env)
elif type(expr) == 'char':
return char(expr, target, link)
else:
return const(expr, target, link, ctable)
def const(expr, target, link, ctable):
"Generate code that places a reference to a copy of expr in target."
c = Code(clobbers=[target])
id = ctable.id(expr)
c.tack_on('mov_%s r%s, #%s' % (type(expr), target, id))
return end_with_link(c, link)
