Style and Clippy fixes.

src/ffi/static_data/growth_rate.rs

@@ -3,22 +3,27 @@ use crate::ffi::{ExternPointer, OwnedPtr};
 use crate::static_data::{GrowthRate, LookupGrowthRate};
 use std::ptr::drop_in_place;
 
+/// Instantiates a new lookup growth rate. The experience array should be the amount of experience
+/// required per level, with the first element being the experience required for level 1 (generally 0).
 #[no_mangle]
 unsafe extern "C" fn growth_rate_lookup_new(array: *const u32, length: usize) -> OwnedPtr<Box<dyn GrowthRate>> {
     let array = std::slice::from_raw_parts(array, length);
     Box::into_raw(Box::new(Box::new(LookupGrowthRate::new(array.to_vec()))))
 }
 
+/// Drops the growth rate.
 #[no_mangle]
 unsafe extern "C" fn growth_rate_lookup_drop(ptr: OwnedPtr<Box<dyn GrowthRate>>) {
     drop_in_place(ptr)
 }
 
+/// Calculate the level something with this growth rate would have at a certain experience.
 #[no_mangle]
 extern "C" fn growth_rate_calculate_level(ptr: ExternPointer<Box<dyn GrowthRate>>, experience: u32) -> LevelInt {
     ptr.as_ref().calculate_level(experience)
 }
 
+/// Calculate the experience something with this growth rate would have at a certain level.
 #[no_mangle]
 extern "C" fn growth_rate_calculate_experience(ptr: ExternPointer<Box<dyn GrowthRate>>, level: LevelInt) -> u32 {
     ptr.as_ref().calculate_experience(level)