[rewol]

Hello,


I am developing my own chemistry library and need to track reaction rates for certain reactions. For this i copied StandardChemistryModel class and it is my intention to make the class create an dictionary object which i can use to read the index of the reaction to be tracked.


In myStandardChemistryModel.H, i added following members:


IOdictionary Dict;
label tracked;


In myStandardChemistryModel.C constructor, i added the following inside the constructor scope (not initilializer list):



Dict
(
IOobject
(
"DictName",
this->mesh().time().constant(),
this->mesh(),
IOobject::NO_READ,
IOobject::NO_WRITE
)
);
tracked(readLabel(Dict.lookup("reactionTrackLabel" )));


When i try to compile, i get the following error:


error: no match for call to '(Foam::IOdictionary) (Foam::IOobject)'

This code works well (with runTime) in solver files but now that i am in the "src" part, i wonder why it wouldnt recognize the dictionary object.




Can anybody offer some guidance on what to try ?


Best Regards.

[FBenz]

Hello,
is there a reason not to put it in the initializer list? I also had problems initializing IOobjects in the constructor scope.
Best regards
Felix

[olesen]

Originally Posted by rewol

Hello,


I am developing my own chemistry library and need to track reaction rates for certain reactions. For this i copied StandardChemistryModel class and it is my intention to make the class create an dictionary object which i can use to read the index of the reaction to be tracked.


In myStandardChemistryModel.H, i added following members:


IOdictionary Dict;
label tracked;


In myStandardChemistryModel.C constructor, i added the following inside the constructor scope (not initilializer list):



Dict
(
IOobject
(
"DictName",
this->mesh().time().constant(),
this->mesh(),
IOobject::NO_READ,
IOobject::NO_WRITE
)
);
tracked(readLabel(Dict.lookup("reactionTrackLabel" )));


When i try to compile, i get the following error:


error: no match for call to '(Foam::IOdictionary) (Foam::IOobject)'

This code works well (with runTime) in solver files but now that i am in the "src" part, i wonder why it wouldnt recognize the dictionary object.




Can anybody offer some guidance on what to try ?


Best Regards.

You think you are constructing an IOdictionary within your constructor body, but "Dict" has already been implicitly default constructed before that point. Not sure how that even compiles, since there is no default constructor for that class. Within the body, you aren't actually constructing "Dict", but calling it with its operator()(....) method - which is also not defined.
Your issues continue with "tracked" as well - also trying to use an operator()(...) on an integer, which will not go well.

[rewol]

Originally Posted by olesen

You think you are constructing an IOdictionary within your constructor body, but "Dict" has already been implicitly default constructed before that point. Not sure how that even compiles, since there is no default constructor for that class. Within the body, you aren't actually constructing "Dict", but calling it with its operator()(....) method - which is also not defined.
Your issues continue with "tracked" as well - also trying to use an operator()(...) on an integer, which will not go well.

Thank you for your response, sir. I did it in the initializer list and situation is resolved.
So basically when i introduce "Dict" in the class header and tried to fill it within constructor, it does not create it but consider it as a function call which is not defined. Am i correct ?


Same goes with "tracked" as well i reckon.


Is there really no other way to relate "Dict" member to the dictionary in the case file ?

[olesen]

Originally Posted by rewol

Thank you for your response, sir. I did it in the initializer list and situation is resolved.
So basically when i introduce "Dict" in the class header and tried to fill it within constructor, it does not create it but consider it as a function call which is not defined. Am i correct ?

Same goes with "tracked" as well i reckon.

Is there really no other way to relate "Dict" member to the dictionary in the case file ?

There is nothing special (ie, non-C++ conform) about how things are working, and I honestly don't understand your question. Please reformulate it.

If you are asking about default constructing members in the initialization and then copy/move assigning them within the body : this will depend on what the particular member classes allow. For all things derived from IOobject and regIOobject, it is not possible to default construct them. In most cases, a subsequent copy assignment will only copy the contained data, not the regIOobject database interface.
If you are asking about how to specify non-ambiguous access to the member functions of member classes, it's just standard C++ for that as well.
If you are asking about, for example, how to obtain the dictionary part of the class:

// assuming the class inherits from IOdictionary
dictionary& dict = *this;

// or
dictionary& dict = static_cast<dictionary&>(*this);


// or
 dictionary& dict = static_cast<IOdictionary&>(*this);

// or ...