Module resolver 

Module path resolution

Functions

find_crate_root

Find the crate root file (lib.rs or main.rs)

is_inline_module

Check if a mod declaration is inline (has body) vs external (just declaration)

is_internal_path

Check if a use path is internal (crate::, self::, super::)

resolve_module_file

Resolve the file path for a module declaration

resolve_use_target

Resolve a use path to its target module path Returns None if the path refers to an external crate or cannot be resolved