fix: Convert vendor/pezkuwi-subxt from submodule to regular directory

vendor/pezkuwi-subxt/rpcs/src/client/rpc_client_t.rs

@@ -0,0 +1,103 @@
+// Copyright 2019-2025 Parity Technologies (UK) Ltd.
+// This file is dual-licensed as Apache-2.0 or GPL-3.0.
+// see LICENSE for license details.
+
+use crate::Error;
+use futures::Stream;
+use std::{future::Future, pin::Pin};
+
+// Re-exporting for simplicity since it's used a bunch in the trait definition.
+pub use serde_json::value::RawValue;
+
+/// A trait describing low level JSON-RPC interactions. Implementations of this can be
+/// used to instantiate a [`super::RpcClient`], used for lower level RPC calls via eg
+/// [`crate::methods::LegacyRpcMethods`] and [`crate::methods::ChainHeadRpcMethods`].
+///
+/// This is a low level interface whose methods expect an already-serialized set of params,
+/// and return an owned but still-serialized [`RawValue`], deferring deserialization to
+/// the caller. This is the case because we want the methods to be object-safe (which prohibits
+/// generics), and want to avoid any unnecessary allocations in serializing/deserializing
+/// parameters.
+///
+/// # Panics
+///
+/// Implementations are free to panic if the `RawValue`'s passed to `request_raw` or
+/// `subscribe_raw` are not JSON arrays. Internally, we ensure that this is always the case.
+pub trait RpcClientT: Send + Sync + 'static {
+    /// Make a raw request for which we expect a single response back from. Implementations
+    /// should expect that the params will either be `None`, or be an already-serialized
+    /// JSON array of parameters.
+    ///
+    /// See [`super::RpcParams`] and the [`super::rpc_params!`] macro for an example of how to
+    /// construct the parameters.
+    ///
+    /// Prefer to use the interface provided on [`super::RpcClient`] where possible.
+    fn request_raw<'a>(
+        &'a self,
+        method: &'a str,
+        params: Option<Box<RawValue>>,
+    ) -> RawRpcFuture<'a, Box<RawValue>>;
+
+    /// Subscribe to some method. Implementations should expect that the params will
+    /// either be `None`, or be an already-serialized JSON array of parameters.
+    ///
+    /// See [`super::RpcParams`] and the [`super::rpc_params!`] macro for an example of how to
+    /// construct the parameters.
+    ///
+    /// Prefer to use the interface provided on [`super::RpcClient`] where possible.
+    fn subscribe_raw<'a>(
+        &'a self,
+        sub: &'a str,
+        params: Option<Box<RawValue>>,
+        unsub: &'a str,
+    ) -> RawRpcFuture<'a, RawRpcSubscription>;
+}
+
+/// A boxed future that is returned from the [`RpcClientT`] methods.
+pub type RawRpcFuture<'a, T> = Pin<Box<dyn Future<Output = Result<T, Error>> + Send + 'a>>;
+
+/// The RPC subscription returned from [`RpcClientT`]'s `subscription` method.
+pub struct RawRpcSubscription {
+    /// The subscription stream.
+    pub stream: Pin<Box<dyn Stream<Item = Result<Box<RawValue>, Error>> + Send + 'static>>,
+    /// The ID associated with the subscription.
+    pub id: Option<String>,
+}
+
+impl<T: RpcClientT> RpcClientT for std::sync::Arc<T> {
+    fn request_raw<'a>(
+        &'a self,
+        method: &'a str,
+        params: Option<Box<RawValue>>,
+    ) -> RawRpcFuture<'a, Box<RawValue>> {
+        (**self).request_raw(method, params)
+    }
+
+    fn subscribe_raw<'a>(
+        &'a self,
+        sub: &'a str,
+        params: Option<Box<RawValue>>,
+        unsub: &'a str,
+    ) -> RawRpcFuture<'a, RawRpcSubscription> {
+        (**self).subscribe_raw(sub, params, unsub)
+    }
+}
+
+impl<T: RpcClientT> RpcClientT for Box<T> {
+    fn request_raw<'a>(
+        &'a self,
+        method: &'a str,
+        params: Option<Box<RawValue>>,
+    ) -> RawRpcFuture<'a, Box<RawValue>> {
+        (**self).request_raw(method, params)
+    }
+
+    fn subscribe_raw<'a>(
+        &'a self,
+        sub: &'a str,
+        params: Option<Box<RawValue>>,
+        unsub: &'a str,
+    ) -> RawRpcFuture<'a, RawRpcSubscription> {
+        (**self).subscribe_raw(sub, params, unsub)
+    }
+}