code: def Uniform(components):
      components = tuple(components)
      size = len(components)
      if size == 1:
          return components[0]
      var = Variable("v", Bint[size])
      return Stack(var.name, components).reduce(
          ops.logaddexp, var.name
      ) - math.log(size)
  
file_path: funsor/examples/pcfg.py
imports: import argparse
  import math
  from collections import OrderedDict
  import torch
  import funsor
  import funsor.ops
  from funsor.delta import Delta
  from funsor.domains import Bint
  from funsor.tensor import Tensor
  from funsor.terms import Number, Stack, Variable
label_desc: Use image node_id 1 for calling a global function with example usage: Uniform(components) and returns: unknown, components