cmakepp_lang/utilities/call_fxn

cmakepp_lang/utilities/call_fxn._cpp_call_fxn_guts(fxn2call result)

Performs most of the work for dynamically calling a function.

cpp_call_fxn is a macro to avoid needing to forward returns. In order to actually call the function we need to write the call to disk. This involves setting a few variables, so in order to avoid contaminating the caller’s namespace we wrap this part of cpp_call_fxn in this function, _cpp_call_fxn_guts. _cpp_call_fxn_guts is not intended to be called from outside of cpp_call_fxn.

Parameters:

  • fxn2call (desc) – The name of the function we are calling.

  • *args – The arguments to forward to the function.

cmakepp_lang/utilities/call_fxn.cpp_call_fxn(fxn2call)

Note

This is a macro, and so does not introduce a new scope.

Calls a function who’s name is provided at runtime.

CMake does not allow you to dynamically determine the name of a function. For example one can NOT do ${name_of_fxn}(<args...>) or any other variation which retrieves part of the function’s name from a variable. The cpp_call macro allows us to circumvent this limitation at the cost of some I/O.

Parameters:

  • fxn2call (desc) – The name of the function to call.

  • *args – The arguments to forward to the function.

Note

cpp_call_fxn is a macro to avoid creating a new scope. If a new scope was created it would be necessary to forward returns, which would significantly complicate the implementation.