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How to use setVarWriteProtect to protect a defstruct variable?

Angeila over 13 years ago

Hi Expert,

I use defstruct to define a struct variable. For example:

defstruct(mystruct aaa bbb)

s1 = make_mystruct(?aaa 1 ?bbb 2)

then I use setVarWriteProtect to make s1 write protected:

setVarWriteProtect('s1)

But when I change s1->aaa = 5, it still can be modified. Seems only s1 is write protected, but no its member variables.

How to write protect the member variable s1->aaa? Is there anyway to do it in Skill if not by function setVarWriteProtect?

Regards,

Angelia

Angeila over 13 years ago

Any one can help me out? thanks!!!
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Angeila over 13 years ago

Help please...
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eDave over 13 years ago

Hi Angeila,
We're not ignoring you. It's just that we don't know the answer or if it is possible. I think it might be a question for a Cadence person.
Why do you want to protect it like this? I can't really think of a good reason.
Dave
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Angeila over 13 years ago

Hi Dave,
Thanks for your kindly response:)
I created a structure which will be shared by other team members after I initialize it, and it will be surved as read-only purpose as I don't want it to be changed by other team members by accident.
I am a greenhand to Skill language, when I refer to skill user guide, I found setVarWriteProtect can meet such requirement, but it does not work a defstruct variable.
Could you please share me any feasible way to do so?
Thanks,
Angelia
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eDave over 13 years ago

Generally variables should be set to be local by including them in a let statement. Local variables cannot be changed by users.
You may have to re-think your code if you want to protect the contents of a global variable. The documentation states that the behavior of this is not specified.
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