Hi,
I want to wrap tuples like in python, but in lua its a table initialized
for a function with{}.
This makes it possible to mention only the parameters the user wants to
specify, and not a whole range, which is hard to remember in position etc.
But in my case certain groups of arguments are related, while others are
for other task done with the same command. So it would be very hard to
use from Lua, or even C++, doing it the standard way with simple
arguments to a function.
It is explained here, how its done in lua:
http://www.lua.org/pil/5.3.html
In wxLua i like to use:
wx.a2dCommand_GroupAB{ what = a2dCommand_GroupAB:BoolOperation_GroupAB,
operation = BOOL_A_SUB_B, selectedA = true, selectedB = true }
AddCommandToMenu( booleanObjects, _("Boolean A-B"), _("Boolean
Subtract"), command );
I have many of those type of commands, so i would like to generate a
binding in an elegant way for all of them.
The question is how can one interface such thing to C++/wxWidgets. The
thing is that the arguments in general are all of different types.
I think that almost results in a hash, with pointers to member
functions?? Or maybe wxVariants??
I believe what i am looking for is some standard hash like structure in
which the wrapper stores the arguments.
Next my commands have a member function/constructor, with one argument
being that hash. That member function checks what is in the hash, and
do the right thing.
BUT maybe it could wrap directly in to what is show down here, and that
would be save and compiler checked.
Like a special keyword in the *.i file, that has a function definition,
with all possible arguments/tuples, and wraps them in a special way to
C++.
Like iterating over the table, and for each key in there, call a
specific Args::argumentX() function.
After the iteration the Args object containing all arguments found is
complete, and the constructor is called with that Args objects as parameter.
Ideas very welcome!
Klaas
Currently inside C++ i do something like the above, but used from within
C++ itself.
That is based on the Args object, its members functions returning a
reference to itself:
a2dCommand_GroupAB* command = new a2dCommand_GroupAB(
a2dCommand_GroupAB::Args().
what( a2dCommand_GroupAB::BoolOperation_GroupAB ).
operation( BOOL_A_SUB_B ).
selectedA( true ).
selectedB( true ) );
AddCommandToMenu( booleanObjects, _("Boolean A-B"), _("Boolean
Subtract"), command );
Here it is in Doxygen /and code, maybe it helps.
http://www.wxart2d.org/wxart2dDoxygen/html/classa2dCommand__GroupAB.html
http://www.wxart2d.org/wxart2dDoxygen/html/classa2dCommand.html
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