subxt: Derive std::cmp traits for subxt payloads and addresses (#1429)

* subxt/tx: Derive std::cmp traits

Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io>

* subxt/runtime_api: Derive std::cmp traits

Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io>

* subxt/constants: Derive std::cmp traits

Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io>

* subxt/custom_values: Derive std::cmp traits

Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io>

* subxt/storage: Derive std::cmp traits

Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io>

* subxt: Fix non_canonical_partial_ord_impl clippy introduced in 1.73

Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io>

* subxt: Add comment wrt derivative issue that triggers clippy warning

Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io>

* Update subxt/src/backend/mod.rs

* Update subxt/src/constants/constant_address.rs

---------

Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io>
Co-authored-by: Niklas Adolfsson <niklasadolfsson1@gmail.com>

subxt/src/backend/mod.rs

@@ -184,6 +184,7 @@ impl<H: PartialEq> PartialEq for BlockRef<H> {
 }
 impl<H: Eq> Eq for BlockRef<H> {}
 
+// Manual implementation to work around https://github.com/mcarton/rust-derivative/issues/115.
 impl<H: PartialOrd> PartialOrd for BlockRef<H> {
     fn partial_cmp(&self, other: &Self) -> Option<std::cmp::Ordering> {
         self.hash.partial_cmp(&other.hash)

subxt/src/constants/constant_address.rs

@@ -28,7 +28,13 @@ pub trait ConstantAddress {
 
 /// This represents the address of a constant.
 #[derive(Derivative)]
-#[derivative(Clone(bound = ""), Debug(bound = ""))]
+#[derivative(
+    Clone(bound = ""),
+    Debug(bound = ""),
+    Eq(bound = ""),
+    Ord(bound = ""),
+    PartialEq(bound = "")
+)]
 pub struct Address<ReturnTy> {
     pallet_name: Cow<'static, str>,
     constant_name: Cow<'static, str>,
@@ -36,6 +42,13 @@ pub struct Address<ReturnTy> {
     _marker: std::marker::PhantomData<ReturnTy>,
 }
 
+// Manual implementation to work around https://github.com/mcarton/rust-derivative/issues/115.
+impl<ReturnTy> PartialOrd for Address<ReturnTy> {
+    fn partial_cmp(&self, other: &Self) -> Option<std::cmp::Ordering> {
+        Some(self.cmp(other))
+    }
+}
+
 /// The type of address typically used to return dynamic constant values.
 pub type DynamicAddress = Address<DecodedValueThunk>;
 

subxt/src/custom_values/custom_value_address.rs

@@ -38,13 +38,25 @@ pub struct Yes;
 
 /// A static address to a custom value.
 #[derive(Derivative)]
-#[derivative(Clone(bound = ""), Debug(bound = ""))]
+#[derivative(
+    Clone(bound = ""),
+    Debug(bound = ""),
+    Eq(bound = ""),
+    Ord(bound = ""),
+    PartialEq(bound = "")
+)]
 pub struct StaticAddress<ReturnTy, IsDecodable> {
     name: &'static str,
     hash: Option<[u8; 32]>,
     phantom: PhantomData<(ReturnTy, IsDecodable)>,
 }
 
+impl<ReturnTy, IsDecodable> PartialOrd for StaticAddress<ReturnTy, IsDecodable> {
+    fn partial_cmp(&self, other: &Self) -> Option<std::cmp::Ordering> {
+        Some(self.cmp(other))
+    }
+}
+
 impl<ReturnTy, IsDecodable> StaticAddress<ReturnTy, IsDecodable> {
     #[doc(hidden)]
     /// Creates a new StaticAddress.

subxt/src/runtime_api/runtime_payload.rs

@@ -69,7 +69,11 @@ pub trait RuntimeApiPayload {
 #[derive(Derivative)]
 #[derivative(
     Clone(bound = "ArgsData: Clone"),
-    Debug(bound = "ArgsData: std::fmt::Debug")
+    Debug(bound = "ArgsData: std::fmt::Debug"),
+    Eq(bound = "ArgsData: std::cmp::Eq"),
+    Ord(bound = "ArgsData: std::cmp::Ord"),
+    PartialEq(bound = "ArgsData: std::cmp::PartialEq"),
+    PartialOrd(bound = "ArgsData: std::cmp::PartialOrd")
 )]
 pub struct Payload<ArgsData, ReturnTy> {
     trait_name: Cow<'static, str>,

subxt/src/storage/storage_address.rs

@@ -55,7 +55,11 @@ pub struct Yes;
 #[derive(Derivative)]
 #[derivative(
     Clone(bound = "StorageKey: Clone"),
-    Debug(bound = "StorageKey: std::fmt::Debug")
+    Debug(bound = "StorageKey: std::fmt::Debug"),
+    Eq(bound = "StorageKey: std::cmp::Eq"),
+    Ord(bound = "StorageKey: std::cmp::Ord"),
+    PartialEq(bound = "StorageKey: std::cmp::PartialEq"),
+    PartialOrd(bound = "StorageKey: std::cmp::PartialOrd")
 )]
 pub struct Address<StorageKey, ReturnTy, Fetchable, Defaultable, Iterable> {
     pallet_name: Cow<'static, str>,

subxt/src/tx/tx_payload.rs

@@ -11,6 +11,7 @@ use crate::{
     metadata::Metadata,
 };
 use codec::Encode;
+use derivative::Derivative;
 use scale_encode::EncodeAsFields;
 use scale_value::{Composite, ValueDef, Variant};
 use std::{borrow::Cow, sync::Arc};
@@ -48,7 +49,15 @@ pub struct ValidationDetails<'a> {
 }
 
 /// A transaction payload containing some generic `CallData`.
-#[derive(Clone, Debug)]
+#[derive(Derivative)]
+#[derivative(
+    Clone(bound = "CallData: Clone"),
+    Debug(bound = "CallData: std::fmt::Debug"),
+    Eq(bound = "CallData: std::cmp::Eq"),
+    Ord(bound = "CallData: std::cmp::Ord"),
+    PartialEq(bound = "CallData: std::cmp::PartialEq"),
+    PartialOrd(bound = "CallData: std::cmp::PartialOrd")
+)]
 pub struct Payload<CallData> {
     pallet_name: Cow<'static, str>,
     call_name: Cow<'static, str>,