Compiler/Simple file inclusion pre processor: Difference between revisions

 

Nevertheless, it is possible to write a limited pre-processor in Wren (the VM itself is written in C):

 

var source = File.read("source.wren")

 

The obvious solution of placing the imported code in a block and then 'lifting' the specifically imported variables into the outer scope does not work because of Wren's rather strange scoping rules. If you did this, then the imported module's top level variables would no longer be top-level relative to the code as a whole and hence would no longer be visible to classes defined within the module itself! For example, if you try to run the following script, you get the error shown:

 

{ // block starts here