upgrade to macro_magic 0.4.3 (paritytech#1832)

# Description

Upgrades `macro_magic` to 0.4.3, which introduces the ability to have
`export_tokens` use the same name as the underlying item for its
auto-generated macro name. Ultimately this will allow for better dev ux
in our derive_impl feature.

substrate/frame/support/Cargo.toml

@@ -30,7 +30,7 @@ sp-weights = { path = "../../primitives/weights", default-features = false}
 sp-debug-derive = { path = "../../primitives/debug-derive", default-features = false}
 sp-metadata-ir = { path = "../../primitives/metadata-ir", default-features = false}
 tt-call = "1.0.8"
-macro_magic = "0.4.2"
+macro_magic = "0.5.0"
 frame-support-procedural = { path = "procedural", default-features = false}
 paste = "1.0"
 sp-state-machine = { path = "../../primitives/state-machine", default-features = false, optional = true}

substrate/frame/support/procedural/Cargo.toml

@@ -23,8 +23,8 @@ proc-macro2 = "1.0.56"
 quote = "1.0.28"
 syn = { version = "2.0.38", features = ["full"] }
 frame-support-procedural-tools = { path = "tools" }
+macro_magic = { version = "0.5.0", features = ["proc_support"] }
 proc-macro-warning = { version = "1.0.0", default-features = false }
-macro_magic = { version = "0.4.2", features = ["proc_support"] }
 expander = "2.0.0"
 sp-core-hashing = { path = "../../../primitives/core/hashing" }
 

substrate/frame/support/procedural/src/lib.rs

@@ -864,7 +864,12 @@ pub fn register_default_impl(attrs: TokenStream, tokens: TokenStream) -> TokenSt
 	let item_impl = syn::parse_macro_input!(tokens as ItemImpl);
 
 	// internally wrap macro_magic's `#[export_tokens]` macro
-	match macro_magic::mm_core::export_tokens_internal(attrs, item_impl.to_token_stream(), true) {
+	match macro_magic::mm_core::export_tokens_internal(
+		attrs,
+		item_impl.to_token_stream(),
+		true,
+		true,
+	) {
 		Ok(tokens) => tokens.into(),
 		Err(err) => err.to_compile_error().into(),
 	}
@@ -1565,7 +1570,7 @@ pub fn pallet_section(attr: TokenStream, tokens: TokenStream) -> TokenStream {
 	let _mod = parse_macro_input!(tokens_clone as ItemMod);
 
 	// use macro_magic's export_tokens as the internal implementation otherwise
-	match macro_magic::mm_core::export_tokens_internal(attr, tokens, false) {
+	match macro_magic::mm_core::export_tokens_internal(attr, tokens, false, true) {
 		Ok(tokens) => tokens.into(),
 		Err(err) => err.to_compile_error().into(),
 	}