464 loadmodule

[Andrea-Havron-NOAA]

What is the feature?

• Refactoring from fims <- Rcpp::Module("fims", PACKAGE = "FIMS") to Rcpp::loadModule("fims", TRUE)

How have you implemented the solution?

• Rcpp::loadModule("fims", TRUE) has been added to zzz.R
• rcpp_interface.hpp has been moved to the src folder so that Rcpp::compileAttributes() can autogenerate needed code to expose Rcpp classes and functions to R
• Rcpp classes and functions are made publically available by adding export tags to FIMS-package.R
• Rcpp::compileAttributes() was run to autogenerate the new RcppExport.cpp file in src. This file, along with the addition of #define TMB_LIB_INIT R_init_FIMS to the top of FIMS.cpp replaces the init.h file in interface. This workflow requires Rcpp::compileAttributes() to be run by the developer if updates are needed to the RcppExport.cpp file
• tests and vignettes are changed so that Rcpp modules and functions can be called directly without referencing a fims module first
• file paths are updated throughout

Does the PR impact any other area of the project?

• Rcpp classes and functions can now be accessed directly after calling library(FIMS)

How to test this change

• This change cannot be tested in a test environment as devtools::load_all() automatically loads all Rcpp classes and functions into the R environment
• This change can be tested with the fims-demo.Rmd, which calls Rcpp classes and functions without first specifying a fims module.

Developer pre-PR checklist

• I relied on GitHub actions to 🧪 things for me while I sat on the 🛋️.