wrapper.r2py needs better error messages for function's argument type checking

[yyzhuang]

I defined a function in Sensibility's sensor layer like so:

CHILD_CONTEXT_DEF["tts_speak"] = {
"type": "func",
"args": str,
"return": None,
"exceptions": "any",
"target": getsensor.tts_speak, }

This function should be called like this: tts_speak("hello"), where "hello" is the single argument. When I rant the code, I got this error:

12.8230729103 Fatal Error: Function 'tts_speak' does not specify argument definition as tuple or list!

This error comes from wrapper.r2py https://github.com/SeattleTestbed/seattlelib_v2/blob/master/wrapper.r2py#L427 This effectively does not allow functions to have a single argument, as argument types should be defined as "args": (type1, type2, type3, ...). Even "args": (type1) does not work: it should be "args": (type1,).

A clearer message should say something like Function 'tts_speak' should specify argument definition as tuple or list, such as "args": (type1, [type2, type3, ...])

[aaaaalbert]

My approach would be to make the security layer docs more verbose about this. (I think the error message is okay).

[JustinCappos]

That makes sense to me.

On Mon, Aug 10, 2015 at 9:16 AM, aaaaalbert notifications@github.com
wrote:

My approach would be to make the security layer docs more verbose about
this. (I think the error message is okay).

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[aaaaalbert]

Newcomers: Anyone who has taken Prof Cappos' security classes should be able to fix this in no time.