def var(self, ast):
if isinstance(ast.idn, list):
bind = pi.Bind(ast.idn[0], pi.Ref(ast.e[0]))
for i in range(1, len(ast.idn)):
bind = pi.DSeq(bind, pi.Bind(ast.idn[i], pi.Ref(ast.e[i])))
return bind
else:
return pi.Bind(ast.idn, pi.Ref(ast.e))
def decSeq(self, ast):
if ast:
if isinstance(ast.d, list):
bind = ast.d[0]
for e in ast.d[1:]:
bind = pi.DSeq(bind, e)
return bind
else:
return ast.d
