feat: add conversion from AllocError to AxError (#6)

* feat: axerrno

* chore: add axerrno optional feature

Author: AsakuraMizu

Cargo.toml

@@ -26,7 +26,10 @@ page-alloc-64g = []
 page-alloc-4g = []
 page-alloc-256m = []
 
+axerrno = ["dep:axerrno"]
+
 [dependencies]
+axerrno = { version = "0.1", optional = true }
 cfg-if = "1.0"
 rlsf = { version = "0.2", optional = true }
 buddy_system_allocator = { version = "0.10", default-features = false, optional = true }

src/lib.rs

@@ -34,6 +34,9 @@ pub use tlsf::TlsfByteAllocator;
 use core::alloc::Layout;
 use core::ptr::NonNull;
 
+#[cfg(feature = "axerrno")]
+use axerrno::AxError;
+
 /// The error type used for allocation.
 #[derive(Debug)]
 pub enum AllocError {
@@ -47,6 +50,16 @@ pub enum AllocError {
     NotAllocated,
 }
 
+#[cfg(feature = "axerrno")]
+impl From<AllocError> for AxError {
+    fn from(value: AllocError) -> Self {
+        match value {
+            AllocError::NoMemory => AxError::NoMemory,
+            _ => AxError::InvalidInput,
+        }
+    }
+}
+
 /// A [`Result`] type with [`AllocError`] as the error type.
 pub type AllocResult<T = ()> = Result<T, AllocError>;