Refactor swapper code with traits.

Change-Id: Ia27d3a11fea86d2ac430c3455d5247cfc4891e70
diff --git a/benches/benchmarks.rs b/benches/benchmarks.rs
index 3f69369..5d5b958 100644
--- a/benches/benchmarks.rs
+++ b/benches/benchmarks.rs
@@ -5,63 +5,22 @@
 extern crate num;
 extern crate test;
 
-use rust_samples::{cswap, swap};
+use rust_samples::swapper::{CAllocaSwapper, CLoopSwapper, LoopSwapper, PtrSwapper, Swapper};
 
 use heapless::consts::{U10, U100, U1000, U10000, U100000, U1000000};
 use num::{one, zero, Num};
 use test::{black_box, Bencher};
 
-fn bench_swap_loop<T, N>(b: &mut Bencher)
+fn bench_swap<S, T, N>(b: &mut Bencher)
 where
+    S: Swapper,
     N: heapless::ArrayLength<T>,
     T: Num + Copy,
 {
     let (mut arr1, mut arr2) = bench_swap_setup::<T, N>();
 
     b.iter(|| {
-        swap::swap_loop(&mut arr1, &mut arr2);
-        black_box(&arr1);
-        black_box(&arr2);
-    });
-}
-
-fn bench_swap_ptrswap<T, N>(b: &mut Bencher)
-where
-    N: heapless::ArrayLength<T>,
-    T: Num + Copy,
-{
-    let (mut arr1, mut arr2) = bench_swap_setup::<T, N>();
-
-    b.iter(|| {
-        swap::swap_ptrswap(&mut arr1, &mut arr2);
-        black_box(&arr1);
-        black_box(&arr2);
-    });
-}
-
-fn bench_cswap_loop<T, N>(b: &mut Bencher)
-where
-    N: heapless::ArrayLength<T>,
-    T: Num + Copy,
-{
-    let (mut arr1, mut arr2) = bench_swap_setup::<T, N>();
-
-    b.iter(|| {
-        cswap::cswap_loop(&mut arr1, &mut arr2);
-        black_box(&arr1);
-        black_box(&arr2);
-    });
-}
-
-fn bench_cswap_alloca<T, N>(b: &mut Bencher)
-where
-    N: heapless::ArrayLength<T>,
-    T: Num + Copy,
-{
-    let (mut arr1, mut arr2) = bench_swap_setup::<T, N>();
-
-    b.iter(|| {
-        cswap::cswap_alloca(&mut arr1, &mut arr2);
+        S::swap(&mut arr1, &mut arr2);
         black_box(&arr1);
         black_box(&arr2);
     });
@@ -103,120 +62,120 @@
 
 #[bench]
 fn bench_swap_loop_len_10(b: &mut Bencher) {
-    bench_swap_loop::<BenchInt, U10>(b);
+    bench_swap::<LoopSwapper, BenchInt, U10>(b);
 }
 
 #[bench]
 fn bench_swap_loop_len_100(b: &mut Bencher) {
-    bench_swap_loop::<BenchInt, U100>(b);
+    bench_swap::<LoopSwapper, BenchInt, U100>(b);
 }
 
 #[bench]
 fn bench_swap_loop_len_1000(b: &mut Bencher) {
-    bench_swap_loop::<BenchInt, U1000>(b);
+    bench_swap::<LoopSwapper, BenchInt, U1000>(b);
 }
 
 #[bench]
 fn bench_swap_loop_len_10000(b: &mut Bencher) {
-    bench_swap_loop::<BenchInt, U10000>(b);
+    bench_swap::<LoopSwapper, BenchInt, U10000>(b);
 }
 
 #[bench]
 fn bench_swap_loop_len_100000(b: &mut Bencher) {
-    bench_swap_loop::<BenchInt, U100000>(b);
+    bench_swap::<LoopSwapper, BenchInt, U100000>(b);
 }
 
 #[bench]
 fn bench_swap_loop_len_1000000(b: &mut Bencher) {
-    bench_swap_loop::<BenchInt, U1000000>(b);
+    bench_swap::<LoopSwapper, BenchInt, U1000000>(b);
 }
 
 #[bench]
 fn bench_swap_ptrswap_len_10(b: &mut Bencher) {
-    bench_swap_ptrswap::<BenchInt, U10>(b);
+    bench_swap::<PtrSwapper, BenchInt, U10>(b);
 }
 
 #[bench]
 fn bench_swap_ptrswap_len_100(b: &mut Bencher) {
-    bench_swap_ptrswap::<BenchInt, U100>(b);
+    bench_swap::<PtrSwapper, BenchInt, U100>(b);
 }
 
 #[bench]
 fn bench_swap_ptrswap_len_1000(b: &mut Bencher) {
-    bench_swap_ptrswap::<BenchInt, U1000>(b);
+    bench_swap::<PtrSwapper, BenchInt, U1000>(b);
 }
 
 #[bench]
 fn bench_swap_ptrswap_len_10000(b: &mut Bencher) {
-    bench_swap_ptrswap::<BenchInt, U10000>(b);
+    bench_swap::<PtrSwapper, BenchInt, U10000>(b);
 }
 
 #[bench]
 fn bench_swap_ptrswap_len_100000(b: &mut Bencher) {
-    bench_swap_ptrswap::<BenchInt, U100000>(b);
+    bench_swap::<PtrSwapper, BenchInt, U100000>(b);
 }
 
 #[bench]
 fn bench_swap_ptrswap_len_1000000(b: &mut Bencher) {
-    bench_swap_ptrswap::<BenchInt, U1000000>(b);
+    bench_swap::<PtrSwapper, BenchInt, U1000000>(b);
 }
 
 #[bench]
 fn bench_cswap_loop_len_10(b: &mut Bencher) {
-    bench_cswap_loop::<BenchInt, U10>(b);
+    bench_swap::<CLoopSwapper, BenchInt, U10>(b);
 }
 
 #[bench]
 fn bench_cswap_loop_len_100(b: &mut Bencher) {
-    bench_cswap_loop::<BenchInt, U100>(b);
+    bench_swap::<CLoopSwapper, BenchInt, U100>(b);
 }
 
 #[bench]
 fn bench_cswap_loop_len_1000(b: &mut Bencher) {
-    bench_cswap_loop::<BenchInt, U1000>(b);
+    bench_swap::<CLoopSwapper, BenchInt, U1000>(b);
 }
 
 #[bench]
 fn bench_cswap_loop_len_10000(b: &mut Bencher) {
-    bench_cswap_loop::<BenchInt, U10000>(b);
+    bench_swap::<CLoopSwapper, BenchInt, U10000>(b);
 }
 
 #[bench]
 fn bench_cswap_loop_len_100000(b: &mut Bencher) {
-    bench_cswap_loop::<BenchInt, U100000>(b);
+    bench_swap::<CLoopSwapper, BenchInt, U100000>(b);
 }
 
 #[bench]
 fn bench_cswap_loop_len_1000000(b: &mut Bencher) {
-    bench_cswap_loop::<BenchInt, U1000000>(b);
+    bench_swap::<CLoopSwapper, BenchInt, U1000000>(b);
 }
 
 #[bench]
 fn bench_cswap_alloca_len_10(b: &mut Bencher) {
-    bench_cswap_alloca::<BenchInt, U10>(b);
+    bench_swap::<CAllocaSwapper, BenchInt, U10>(b);
 }
 
 #[bench]
 fn bench_cswap_alloca_len_100(b: &mut Bencher) {
-    bench_cswap_alloca::<BenchInt, U100>(b);
+    bench_swap::<CAllocaSwapper, BenchInt, U100>(b);
 }
 
 #[bench]
 fn bench_cswap_alloca_len_1000(b: &mut Bencher) {
-    bench_cswap_alloca::<BenchInt, U1000>(b);
+    bench_swap::<CAllocaSwapper, BenchInt, U1000>(b);
 }
 
 #[bench]
 fn bench_cswap_alloca_len_10000(b: &mut Bencher) {
-    bench_cswap_alloca::<BenchInt, U10000>(b);
+    bench_swap::<CAllocaSwapper, BenchInt, U10000>(b);
 }
 
 #[bench]
 fn bench_cswap_alloca_len_100000(b: &mut Bencher) {
-    bench_cswap_alloca::<BenchInt, U100000>(b);
+    bench_swap::<CAllocaSwapper, BenchInt, U100000>(b);
 }
 
 #[bench]
 fn bench_cswap_alloca_len_1000000(b: &mut Bencher) {
-    bench_cswap_alloca::<BenchInt, U1000000>(b);
+    bench_swap::<CAllocaSwapper, BenchInt, U1000000>(b);
 }