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"Script_Play" gotcha & potential wor

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    "Script_Play" gotcha & potential wor

    Situation: If you use the script_play function and pass the name of a non-existent function, it produces no error message.

    Problem: If you change the name of script and fail to catch every place where the script is called, your code will still execute as though there was no problem (except that the script is never called).

    You work around this by sandwiching all your script_play commands like so:

    if .not. script_play("somescript") then
    ErrorMessage("Somescript not found.")
    end if

    But I'm generally opposed to solutions that turn one line of code into three.

    I created a small script_play replacement:

    function ScrPl as V(scrname as C)
    if .not. script_play(scrname) then
    ui_msg_box("Error", "Function requested ("+scrname+") not found.")
    end if
    end function

    My only concer was the fate of shared variables. Since they were defined in the scope of what was now their grandparent, would they still be recognized?

    I made a small script:

    dim shared msg as C
    ui_msg_box("show msg", msg)

    And then called it interactively:

    dim shared msg as C
    msg = "It worked!"
    scrpl("showmsg")

    It seems to have worked. Also, if I call a bogus routine:

    scrpl("XXX")

    I get an error message.

    What do y'all think? Am I missing something? Or will this work?

    ===Blake===

    #2
    RE:

    Blake

    In previous versions, using script_play() with an invalid script name did give an error. Apparently something has been changed in the current version. Perhaps someone at Alpha can explain the change.

    Jerry

    Comment


      #3
      RE:

      It appears to be working-as-designed; the return value would be meaningless (I think) if the only possibility of failure was resulted in a terminating error.

      But it sure made me scratch my head.

      Comment

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