loader: add `filter_nit_source` to help tools to manage non-nit arguments on their...

Signed-off-by: Jean Privat <jean@pryen.org>

diff --git a/src/loader.nit b/src/loader.nit
index 3001ac8..492584b 100644 (file)
--- a/src/loader.nit
+++ b/src/loader.nit
@@ -455,6 +455,26 @@ redef class ModelBuilder
                return nmodule
        end
 
+       # Remove Nit source files from a list of arguments.
+       #
+       # Items of `args` that can be loaded as a nit file will be removed from `args` and returned.
+       fun filter_nit_source(args: Array[String]): Array[String]
+       do
+               var keep = new Array[String]
+               var res = new Array[String]
+               for a in args do
+                       var l = identify_file(a)
+                       if l == null then
+                               keep.add a
+                       else
+                               res.add a
+                       end
+               end
+               args.clear
+               args.add_all(keep)
+               return res
+       end
+
        # Try to load a module using a path.
        # Display an error if there is a problem (IO / lexer / parser) and return null.
        # Note: usually, you do not need this method, use `get_mmodule_by_name` instead.