refactor imports

src/context/custom_ctx.rs

@@ -1,4 +1,4 @@
-use std::str::FromStr;
+use core::str::FromStr;
 
 use cosmwasm_std::{Deps, DepsMut, Env, Order, Storage};
 use ibc_clients::wasm_types::client_state::ClientState as WasmClientState;
@@ -27,7 +27,7 @@ pub struct Context<'a, C: ClientType<'a>> {
     env: Env,
     client_id: ClientId,
     checksum: Option<Checksum>,
-    client_type: std::marker::PhantomData<C>,
+    client_type: core::marker::PhantomData<C>,
 }
 
 impl<'a, C: ClientType<'a>> Context<'a, C> {
@@ -40,7 +40,7 @@ impl<'a, C: ClientType<'a>> Context<'a, C> {
             env,
             client_id,
             checksum: None,
-            client_type: std::marker::PhantomData::<C>,
+            client_type: core::marker::PhantomData::<C>,
         })
     }
 
@@ -53,7 +53,7 @@ impl<'a, C: ClientType<'a>> Context<'a, C> {
             env,
             client_id,
             checksum: None,
-            client_type: std::marker::PhantomData::<C>,
+            client_type: core::marker::PhantomData::<C>,
         })
     }
 

src/error.rs

@@ -1,4 +1,3 @@
-use alloc::string::String;
 use std::error::Error as StdError;
 
 use cosmwasm_std::StdError as CwError;

src/helpers.rs

@@ -11,7 +11,7 @@ pub enum HeightTravel {
 /// Decodes a `Height` from a UTF-8 encoded byte array.
 pub fn parse_height(encoded_height: Vec<u8>) -> Result<Height, ClientError> {
     let height_str =
-        alloc::str::from_utf8(encoded_height.as_slice()).map_err(|e| ClientError::Other {
+        core::str::from_utf8(encoded_height.as_slice()).map_err(|e| ClientError::Other {
             description: e.to_string(),
         })?;
 

src/msg.rs

@@ -1,7 +1,6 @@
 //! Contains the definition of the messages that can be sent to the CosmWasm contract.
 
-use alloc::vec::Vec;
-use std::str::FromStr;
+use core::str::FromStr;
 
 use base64::prelude::BASE64_STANDARD;
 use base64::Engine;

src/response.rs

@@ -1,6 +1,3 @@
-use alloc::string::String;
-use alloc::vec::Vec;
-
 use cosmwasm_schema::cw_serde;
 use ibc_core::client::types::Height;
 

src/types/da_data.rs

@@ -1,7 +1,7 @@
 use base64::engine::general_purpose;
 use base64::Engine;
 use core::fmt::{Debug, Display, Error as FmtError, Formatter};
-use std::str::FromStr;
+use core::str::FromStr;
 
 use ibc_core::host::types::identifiers::ClientId;
 use ibc_core::primitives::proto::Protobuf;

src/types/error.rs

@@ -1,5 +1,3 @@
-use alloc::string::{String, ToString};
-
 use ibc_core::client::types::error::ClientError;
 use ibc_core::handler::types::error::ContextError;
 use ibc_core::host::types::error::IdentifierError;