Implement Zip for up to 9 producers

Author: felsenhower

src/parallel/impl_par_methods.rs

@@ -196,5 +196,8 @@ zip_impl! {
     [true P1 P2 P3],
     [true P1 P2 P3 P4],
     [true P1 P2 P3 P4 P5],
-    [false P1 P2 P3 P4 P5 P6],
+    [true P1 P2 P3 P4 P5 P6],
+    [true P1 P2 P3 P4 P5 P6 P7],
+    [true P1 P2 P3 P4 P5 P6 P7 P8],
+    [false P1 P2 P3 P4 P5 P6 P7 P8 P9],
 }

src/parallel/par.rs

@@ -307,6 +307,9 @@ zip_impl! {
     [P1 P2 P3 P4],
     [P1 P2 P3 P4 P5],
     [P1 P2 P3 P4 P5 P6],
+    [P1 P2 P3 P4 P5 P6 P7],
+    [P1 P2 P3 P4 P5 P6 P7 P8],
+    [P1 P2 P3 P4 P5 P6 P7 P8 P9],
 }
 
 impl<D, Parts> Parallel<Zip<Parts, D>>

src/zip/mod.rs

@@ -504,6 +504,9 @@ offset_impl! {
     [A B C D][ a b c d],
     [A B C D E][ a b c d e],
     [A B C D E F][ a b c d e f],
+    [A B C D E F G][ a b c d e f g],
+    [A B C D E F G H][ a b c d e f g h],
+    [A B C D E F G H I][ a b c d e f g h i],
 }
 
 macro_rules! zipt_impl {
@@ -563,6 +566,9 @@ zipt_impl! {
     [A B C D][ a b c d],
     [A B C D E][ a b c d e],
     [A B C D E F][ a b c d e f],
+    [A B C D E F G][ a b c d e f g],
+    [A B C D E F G H][ a b c d e f g h],
+    [A B C D E F G H I][ a b c d e f g h i],
 }
 
 macro_rules! map_impl {
@@ -914,7 +920,10 @@ map_impl! {
     [true P1 P2 P3],
     [true P1 P2 P3 P4],
     [true P1 P2 P3 P4 P5],
-    [false P1 P2 P3 P4 P5 P6],
+    [true P1 P2 P3 P4 P5 P6],
+    [true P1 P2 P3 P4 P5 P6 P7],
+    [true P1 P2 P3 P4 P5 P6 P7 P8],
+    [false P1 P2 P3 P4 P5 P6 P7 P8 P9],
 }
 
 /// Value controlling the execution of `.fold_while` on `Zip`.