Skip Elif Tab Property

If the "if" statement tested true, and LW Python is currently on a "elif" statement, then the tab number remains unchanged. More formally,

if the following are true:

  • the line at time t = i
  • the tab at time t = j
  • statement at line i, tab j = elif test:
  • value at j in map (Control Map at time t) = pair ("if", True)
  • expression state at time t = "not_expr"

then the tab at time (t + 1) = j

If the "if" statement tested true, then the "elif" statement and body will be skipped. This is accomplished by leaving the tab number unchanged. For example,

if the following are true:

  • the line at time 13 = 3
  • the tab at time 13 = 0
  • statement at line 3, tab 0 = elif __eq__(3, 3):
  • value at 0 in map (Control Map at time 13) = pair ("if", True)
  • expression state at time 13 = "not_expr"

then the tab at time (13 + 1) = 0

Try stepping through the simulator to see the "Tab" remain 0.

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LW Python State
Current Line1Current Tab0Time0
LW Python Simulator

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