Call Add Function Return Rule

When the state is "call_function_begin," the expression is an addition, and there is a parent expression, then update the state to "return."

if the following are true:

  • expression state at time t = "call_function_begin"
  • parent stack at time t = [ x, y ]
  • the expression at time t = function call with name: "__add__" and arguments: args

then expression state at time (t + 1) = "return"

Python is finished with addition, and it enter the "return" state to execute the parent expression next.

For example,

if the following are true:

  • expression state at time 15 = "call_function_begin"
  • parent stack at time 15 = [ __add__(5, (__add__(2, 3))), [ ] ]
  • the expression at time 15 = __add__(2, 3)

then expression state at time (15 + 1) = "return"

Try stepping through the simulator to see the "Expression State" change to "return."

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