f - fixed unused mut warnings in c_bindings

Author: jkczyz

lightning/src/offers/invoice.rs

@@ -332,7 +332,7 @@ macro_rules! invoice_derived_signing_pubkey_builder_methods { (
 } }
 
 macro_rules! invoice_builder_methods { (
-	$self: ident, $self_type: ty, $return_type: ty, $return_value: expr, $type_param: ty
+	$self: ident, $self_type: ty, $return_type: ty, $return_value: expr, $type_param: ty $(, $self_mut: tt)?
 ) => {
 	pub(crate) fn amount_msats(
 		invoice_request: &InvoiceRequest
@@ -375,7 +375,7 @@ macro_rules! invoice_builder_methods { (
 	/// [`Bolt12Invoice::is_expired`].
 	///
 	/// Successive calls to this method will override the previous setting.
-	pub fn relative_expiry(mut $self: $self_type, relative_expiry_secs: u32) -> $return_type {
+	pub fn relative_expiry($($self_mut)* $self: $self_type, relative_expiry_secs: u32) -> $return_type {
 		let relative_expiry = Duration::from_secs(relative_expiry_secs as u64);
 		$self.invoice.fields_mut().relative_expiry = Some(relative_expiry);
 		$return_value
@@ -385,7 +385,7 @@ macro_rules! invoice_builder_methods { (
 	///
 	/// Successive calls to this method will add another address. Caller is responsible for not
 	/// adding duplicate addresses and only calling if capable of receiving to P2WSH addresses.
-	pub fn fallback_v0_p2wsh(mut $self: $self_type, script_hash: &WScriptHash) -> $return_type {
+	pub fn fallback_v0_p2wsh($($self_mut)* $self: $self_type, script_hash: &WScriptHash) -> $return_type {
 		let address = FallbackAddress {
 			version: WitnessVersion::V0.to_num(),
 			program: Vec::from(script_hash.to_byte_array()),
@@ -398,7 +398,7 @@ macro_rules! invoice_builder_methods { (
 	///
 	/// Successive calls to this method will add another address. Caller is responsible for not
 	/// adding duplicate addresses and only calling if capable of receiving to P2WPKH addresses.
-	pub fn fallback_v0_p2wpkh(mut $self: $self_type, pubkey_hash: &WPubkeyHash) -> $return_type {
+	pub fn fallback_v0_p2wpkh($($self_mut)* $self: $self_type, pubkey_hash: &WPubkeyHash) -> $return_type {
 		let address = FallbackAddress {
 			version: WitnessVersion::V0.to_num(),
 			program: Vec::from(pubkey_hash.to_byte_array()),
@@ -411,7 +411,7 @@ macro_rules! invoice_builder_methods { (
 	///
 	/// Successive calls to this method will add another address. Caller is responsible for not
 	/// adding duplicate addresses and only calling if capable of receiving to P2TR addresses.
-	pub fn fallback_v1_p2tr_tweaked(mut $self: $self_type, output_key: &TweakedPublicKey) -> $return_type {
+	pub fn fallback_v1_p2tr_tweaked($($self_mut)* $self: $self_type, output_key: &TweakedPublicKey) -> $return_type {
 		let address = FallbackAddress {
 			version: WitnessVersion::V1.to_num(),
 			program: Vec::from(&output_key.serialize()[..]),
@@ -422,7 +422,7 @@ macro_rules! invoice_builder_methods { (
 
 	/// Sets [`Bolt12Invoice::invoice_features`] to indicate MPP may be used. Otherwise, MPP is
 	/// disallowed.
-	pub fn allow_mpp(mut $self: $self_type) -> $return_type {
+	pub fn allow_mpp($($self_mut)* $self: $self_type) -> $return_type {
 		$self.invoice.fields_mut().features.set_basic_mpp_optional();
 		$return_value
 	}
@@ -437,7 +437,7 @@ impl<'a> InvoiceBuilder<'a, DerivedSigningPubkey> {
 }
 
 impl<'a, S: SigningPubkeyStrategy> InvoiceBuilder<'a, S> {
-	invoice_builder_methods!(self, Self, Self, self, S);
+	invoice_builder_methods!(self, Self, Self, self, S, mut);
 }
 
 #[cfg(all(c_bindings, not(test)))]
@@ -527,13 +527,13 @@ impl UnsignedBolt12Invoice {
 	}
 }
 
-macro_rules! unsigned_invoice_sign_method { ($self: ident, $self_type: ty) => {
+macro_rules! unsigned_invoice_sign_method { ($self: ident, $self_type: ty $(, $self_mut: tt)?) => {
 	/// Signs the [`TaggedHash`] of the invoice using the given function.
 	///
 	/// Note: The hash computation may have included unknown, odd TLV records.
 	///
 	/// This is not exported to bindings users as functions aren't currently mapped.
-	pub fn sign<F, E>(mut $self: $self_type, sign: F) -> Result<Bolt12Invoice, SignError<E>>
+	pub fn sign<F, E>($($self_mut)* $self: $self_type, sign: F) -> Result<Bolt12Invoice, SignError<E>>
 	where
 		F: FnOnce(&Self) -> Result<Signature, E>
 	{
@@ -556,7 +556,7 @@ macro_rules! unsigned_invoice_sign_method { ($self: ident, $self_type: ty) => {
 } }
 
 impl UnsignedBolt12Invoice {
-	unsigned_invoice_sign_method!(self, Self);
+	unsigned_invoice_sign_method!(self, Self, mut);
 }
 
 impl AsRef<TaggedHash> for UnsignedBolt12Invoice {