strange error message in running adexl

Joe,

I already explained why this is failing, but maybe I wasn't clear enough so let me try again.

Cadence has a function called "ls" which has been defined for many years, although is private (ie we haven't documented it and so you should not use it in your code). It accepts either no arguments or one argument and returns a list of files in the working or specified directory.

Somewhere in the ADE code it is using this function (which is fair enough, as it is one of our functions), and is calling it with a single argument.

Now, you've replaced our private function with your own with the same name, and it doesn't accept an optional argument, nor does it return the list of files in the directory (it will print the working directory contents in the terminal window).

So when our code calls ls, it breaks, because it doesn't behave as the code expects.

Now I don't know why it suddenly stopped working in ADE XL but I can imagine that maybe you used a different calculator function, or you used some different part of the functionality in ADE XL, or it loaded your modified function from the .cdsinit which it hadn't done before. But regardless of this, you're asking for trouble redefining our functions, especially if they have different semantics from the original.

We generally advise that customer SKILL code should define functions which have a prefix, where that prefix begins with an uppercase letter, since Cadence functions either don't have a prefix or have a lowercase prefix (in general).

So if you called your function LS you'd be ok...

Regards,
Andrew

Joe,

I already explained why this is failing, but maybe I wasn't clear enough so let me try again.

Cadence has a function called "ls" which has been defined for many years, although is private (ie we haven't documented it and so you should not use it in your code). It accepts either no arguments or one argument and returns a list of files in the working or specified directory.

Somewhere in the ADE code it is using this function (which is fair enough, as it is one of our functions), and is calling it with a single argument.

Now, you've replaced our private function with your own with the same name, and it doesn't accept an optional argument, nor does it return the list of files in the directory (it will print the working directory contents in the terminal window).

So when our code calls ls, it breaks, because it doesn't behave as the code expects.

Now I don't know why it suddenly stopped working in ADE XL but I can imagine that maybe you used a different calculator function, or you used some different part of the functionality in ADE XL, or it loaded your modified function from the .cdsinit which it hadn't done before. But regardless of this, you're asking for trouble redefining our functions, especially if they have different semantics from the original.

We generally advise that customer SKILL code should define functions which have a prefix, where that prefix begins with an uppercase letter, since Cadence functions either don't have a prefix or have a lowercase prefix (in general).

So if you called your function LS you'd be ok...

Regards,
Andrew