feat: implement Format for SmallVec

Cargo.toml

@@ -9,8 +9,6 @@ repository = "https://github.com/servo/rust-smallvec"
 description = "'Small vector' optimization: store up to a small number of items on the stack"
 keywords = ["small", "vec", "vector", "stack", "no_std"]
 categories = ["data-structures"]
-readme = "README.md"
-documentation = "https://docs.rs/smallvec/"
 exclude = [".gitignore", "tests/", "fuzz/", "benches/", ".github/"]
 
 [features]
@@ -21,15 +19,16 @@ serde = ["dep:serde_core"]
 internals = []
 
 [dependencies]
-arbitrary = { version = "1", optional = true, default-features = false }
+arbitrary = { version = "1.4", optional = true, default-features = false }
 borsh = { version = "1.8", optional = true, default-features = false }
-bytes = { version = "1", optional = true, default-features = false }
-serde_core = { version = "1.0.221", optional = true, default-features = false }
-malloc_size_of = { version = "0.1.1", optional = true, default-features = false }
+bytes = { version = "1.12", optional = true, default-features = false }
+defmt = { version = "1.1", optional = true, default-features = false}
+serde_core = { version = "1.0", optional = true, default-features = false }
+malloc_size_of = { version = "0.1", optional = true, default-features = false }
 
 [dev-dependencies]
 serde_test = "1.0"
-criterion = "0.4.0"
+criterion = "0.4"
 
 [[test]]
 name = "arbitrary"

src/lib.rs

@@ -60,9 +60,9 @@
 #![cfg_attr(feature = "may_dangle", feature(dropck_eyepatch))]
 
 #[doc(hidden)]
-pub extern crate alloc;
+extern crate alloc;
 
-#[cfg(any(test, feature = "std"))]
+#[cfg(feature = "std")]
 extern crate std;
 
 #[cfg(feature = "borsh")]
@@ -74,6 +74,12 @@ use bytes::{
     BufMut,
     buf::UninitSlice
 };
+#[cfg(feature = "defmt")]
+use defmt::{
+    Format,
+    Formatter as DeFormatter,
+    write as dewrite
+};
 #[cfg(feature = "malloc_size_of")]
 use malloc_size_of::{
     MallocShallowSizeOf,
@@ -3201,3 +3207,10 @@ unsafe impl<const N: usize> BufMut for SmallVec<u8, N> {
         self.resize(new_len, val);
     }
 }
+
+#[cfg(feature = "defmt")]
+impl<T: Format, const N: usize> Format for SmallVec<T, N> {
+    fn format(&self, fmt: DeFormatter) {
+        dewrite!(fmt, "{=[?]}", self.as_ref());
+    }
+}