Save Constructor Parameters Property

Before LW Python jumps to the "__init__" constructor, it needs to construct a new "Variables" map with the "__init__" method parameters. LW Python first copies the "__init__" method parameters to the "Parameters" list. More formally,

if the following are true:

  • expression state at time t = "call_function_begin"
  • the expression at time t = Python constructor with name: class_name and arguments: args
  • method parameters where the Class Map is (Class Map at time t), class name is class_name, and method name is "__init__" = params

then Parameters List at time (t + 1) = params

For example,

if the following are true:

  • expression state at time 20 = "call_function_begin"
  • the expression at time 20 = Person("John", "Smith", 25)
  • method parameters where the Class Map is (Class Map at time 20), class name is "Person", and method name is "__init__" = [ self, [ first_name, [ last_name, [ age, [ ] ] ] ] ]

then Parameters List at time (20 + 1) = [ self, [ first_name, [ last_name, [ age, [ ] ] ] ] ]

Try stepping through the simulator to see LW Python copy the method parameters to "Parameters."

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