Require explicit usage of alloc and std

objc/src/declare.rs

@@ -34,6 +34,8 @@ decl.register();
 ```
 */
 
+use alloc::format;
+use alloc::string::ToString;
 use core::mem;
 use core::ptr;
 use std::ffi::CString;

objc/src/encode.rs

@@ -55,6 +55,7 @@ encode_args_impl!(A, B, C, D, E, F, G, H, I, J, K, L);
 #[cfg(test)]
 mod tests {
     use crate::runtime::{Class, Object, Sel};
+    use alloc::string::ToString;
     use objc_encode::Encode;
 
     #[test]

objc/src/lib.rs

@@ -60,11 +60,13 @@ The bindings can be used on Linux or *BSD utilizing the
 [GNUstep Objective-C runtime](https://www.github.com/gnustep/libobjc2).
 */
 
-#![crate_name = "objc"]
-#![crate_type = "lib"]
+#![no_std]
 #![warn(missing_docs)]
 #![allow(clippy::missing_safety_doc)]
 
+extern crate alloc;
+extern crate std;
+
 pub use objc_encode::{Encode, Encoding};
 
 pub use crate::encode::EncodeArguments;

objc/src/message/mod.rs

@@ -1,3 +1,4 @@
+use alloc::string::{String, ToString};
 use core::any::Any;
 use core::fmt;
 use core::mem;

objc/src/rc/weak.rs

@@ -1,3 +1,4 @@
+use alloc::boxed::Box;
 use core::cell::UnsafeCell;
 use core::ptr;
 

objc_foundation/src/array.rs

@@ -1,3 +1,4 @@
+use alloc::vec::Vec;
 use core::cmp::Ordering;
 use core::ffi::c_void;
 use core::marker::PhantomData;
@@ -406,6 +407,9 @@ pub type NSMutableSharedArray<T> = NSMutableArray<T, Shared>;
 
 #[cfg(test)]
 mod tests {
+    use alloc::vec;
+    use alloc::vec::Vec;
+
     use super::{INSArray, INSMutableArray, NSArray, NSMutableArray};
     use crate::{INSObject, INSString, NSObject, NSString};
     use objc_id::Id;

objc_foundation/src/data.rs

@@ -1,3 +1,5 @@
+#[cfg(feature = "block")]
+use alloc::vec::Vec;
 use core::ffi::c_void;
 use core::ops::Range;
 use core::slice;
@@ -135,6 +137,7 @@ impl INSMutableCopying for NSMutableData {
 mod tests {
     use super::{INSData, INSMutableData, NSData, NSMutableData};
     use crate::INSObject;
+    use alloc::vec;
 
     #[test]
     fn test_bytes() {

objc_foundation/src/dictionary.rs

@@ -1,3 +1,4 @@
+use alloc::vec::Vec;
 use core::cmp::min;
 use core::marker::PhantomData;
 use core::ops::Index;
@@ -164,9 +165,11 @@ where
 
 #[cfg(test)]
 mod tests {
+    use alloc::vec;
+    use objc_id::Id;
+
     use super::{INSDictionary, NSDictionary};
     use crate::{INSArray, INSObject, INSString, NSObject, NSString};
-    use objc_id::Id;
 
     fn sample_dict(key: &str) -> Id<NSDictionary<NSString, NSObject>> {
         let string = NSString::from_str(key);

objc_foundation/src/lib.rs

@@ -1,5 +1,9 @@
+#![no_std]
 #![crate_name = "objc_foundation"]
 
+extern crate alloc;
+extern crate std;
+
 pub use self::array::{
     INSArray, INSMutableArray, NSArray, NSComparisonResult, NSMutableArray, NSMutableSharedArray,
     NSRange, NSSharedArray,

objc_foundation/src/object.rs

@@ -56,6 +56,7 @@ object_struct!(NSObject);
 mod tests {
     use super::{INSObject, NSObject};
     use crate::{INSString, NSString};
+    use alloc::format;
 
     #[test]
     fn test_is_equal() {

objc_foundation/src/value.rs

@@ -1,3 +1,4 @@
+use alloc::string::ToString;
 use core::any::Any;
 use core::ffi::c_void;
 use core::marker::PhantomData;

objc_id/src/lib.rs

@@ -38,6 +38,9 @@ assert!(weak.load().is_none());
 ```
 */
 
+// This crate is, but its dependencies are not
+#![no_std]
+
 pub use id::{Id, Owned, Ownership, ShareId, Shared, WeakId};
 
 mod id;