arrayvec - cargo Package Compare versions

Comparing version 0.3.18 to 0.3.19

tests/generic_array.rs

+#![cfg(feature = "use_generic_array")]
+
+extern crate arrayvec;
+#[macro_use]
+extern crate generic_array;
+
+use arrayvec::ArrayVec;
+
+use generic_array::GenericArray;
+
+use generic_array::typenum::U41;
+
+#[test]
+fn test_simple() {
+    let mut vec: ArrayVec<GenericArray<i32, U41>> = ArrayVec::new();
+
+    assert_eq!(vec.len(), 0);
+    assert_eq!(vec.capacity(), 41);
+    vec.extend(0..20);
+    assert_eq!(vec.len(), 20);
+    assert_eq!(&vec[..5], &[0, 1, 2, 3, 4]);
+}
+

.travis.yml

@@ -8,2 +8,3 @@ language: rust
       env:
+        - FEATURES="use_generic_array"
         - NODEFAULT=1
@@ -19,3 +20,3 @@ - rust: beta
       env:
-      - FEATURES='use_union'
+      - FEATURES='use_union use_generic_array'
       - NODROP_FEATURES='use_union'
@@ -22,0 +23,0 @@ branches:

Cargo.toml

 [package]
 name = "arrayvec"
-version = "0.3.18"
+version = "0.3.19"
 authors = ["bluss"]
@@ -22,2 +22,6 @@ license = "MIT/Apache-2.0"
 
+[dependencies.generic-array]
+version = "0.5.1"
+optional = true
+
 [features]
@@ -27,1 +31,2 @@ default = ["std"]
 use_union = ["nodrop/use_union"]
+use_generic_array = ["generic-array"]

README.rst

@@ -9,3 +9,3 @@
 
-__ http://bluss.github.io/arrayvec
+__ https://bluss.github.io/arrayvec
 
@@ -26,2 +26,8 @@ |build_status|_ |crates|_ |crates2|_
 
+- 0.3.19
+
+  - Add new crate feature ``use_generic_array`` which allows using their
+    ``GenericArray`` just like a regular fixed size array for the storage
+    of an ``ArrayVec``.
+
 - 0.3.18
@@ -28,0 +34,0 @@

src/array.rs

@@ -22,2 +22,20 @@
 
+#[cfg(feature = "use_generic_array")]
+unsafe impl<T, U> Array for ::generic_array::GenericArray<T, U>
+    where U: ::generic_array::ArrayLength<T>
+{
+    type Item = T;
+    type Index = usize;
+    fn as_ptr(&self) -> *const Self::Item {
+        (**self).as_ptr()
+    }
+    fn as_mut_ptr(&mut self) -> *mut Self::Item {
+        (**self).as_mut_ptr()
+    }
+    fn capacity() -> usize {
+        U::to_usize()
+    }
+
+}
+
 impl Index for u8 {
@@ -37,2 +55,9 @@ #[inline(always)]
 
+impl Index for usize {
+    #[inline(always)]
+    fn to_usize(self) -> usize { self }
+    #[inline(always)]
+    fn from(ix: usize) ->  Self { ix }
+}
+
 macro_rules! fix_array_impl {
@@ -39,0 +64,0 @@ ($index_type:ty, $len:expr ) => (

src/lib.rs

@@ -16,2 +16,8 @@ //! **arrayvec** provides the types `ArrayVec` and `ArrayString`:
 //!     which has reduced space overhead
+//!
+//! - `use_generic_array`
+//!   - Optional
+//!   - Requires Rust stable channel
+//!   - Depend on generic-array and allow using it just like a fixed
+//!     size array for ArrayVec storage.
 #![cfg_attr(not(feature="std"), no_std)]
@@ -21,2 +27,5 @@ extern crate odds;
 
+#[cfg(feature = "use_generic_array")]
+extern crate generic_array;
+
 #[cfg(not(feature="std"))]
@@ -23,0 +32,0 @@ extern crate core as std;

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