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IsQuery attribute adds const only to header, not to implemention [message #1777638]

Fri, 01 December 2017 07:34

Shingyu Kang

Messages: 5
Registered: December 2017

Junior Member

Hi,

If a passive class is added as a parameter to a signal,
the parameter type is declared as const&.
So some member functions needs to be declared as "is query".

If I check "is query" attribute to a member function of a class (not capsule),
"const" is added the function in its header file.

int getFunctionConst() const;

But "const" is not added to the its body function as follows.
int ConstClass::getFunctionConst()
{ ... }

So compiling fails.

Thanks.
Shingyu Kang

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Re: IsQuery attribute adds const only to header, not to implemention [message #1777882 is a reply to message #1777638]

Tue, 05 December 2017 15:13

Ernesto Posse

Messages: 438
Registered: March 2011

Senior Member

Shingyu Kang wrote on Fri, 01 December 2017 02:34

Hi,

If a passive class is added as a parameter to a signal,
the parameter type is declared as const&.
So some member functions needs to be declared as "is query".

I'm not sure I understand. Passive classes do not have signals. Do you mean an operation?

Also, declaring the type of a parameter to be const& is not related to the operation being a query or not. Can you clarify what you mean? Perhaps with your model?

In any case, this doesn't seem to be related to the problem:

Shingyu Kang wrote on Fri, 01 December 2017 02:34

Hi,
If I check "is query" attribute to a member function of a class (not capsule),
"const" is added the function in its header file.

int getFunctionConst() const;

But "const" is not added to the its body function as follows.
int ConstClass::getFunctionConst()
{ ... }

So compiling fails.

I've tested this, and indeed this is a bug. In fact, the problem seems to occur with capsules as well, not just passive classes.

Unfortunately I don't have a workaround at the moment.

I'll open a bug for this.

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