1 files changed, 55 insertions, 0 deletions
diff --git a/bzipper_macros/src/impls/decode_struct.rs b/bzipper_macros/src/impls/decode_struct.rs
new file mode 100644
index 0000000..9688e91
--- /dev/null
+++ b/bzipper_macros/src/impls/decode_struct.rs
@@ -0,0 +1,55 @@
+// Copyright 2024 Gabriel Bjørnager Jensen.
+//
+// This file is part of bZipper.
+//
+// bZipper is free software: you can redistribute
+// it and/or modify it under the terms of the GNU
+// Lesser General Public License as published by
+// the Free Software Foundation, either version 3
+// of the License, or (at your option) any later
+// version.
+//
+// bZipper is distributed in the hope that it will
+// be useful, but WITHOUT ANY WARRANTY; without
+// even the implied warranty of MERCHANTABILITY or
+// FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Less-
+// er General Public License along with bZipper. If
+// not, see <https://www.gnu.org/licenses/>.
+
+use proc_macro2::TokenStream;
+use quote::quote;
+use syn::{DataStruct, Fields, Token};
+use syn::punctuated::Punctuated;
+
+#[must_use]
+pub fn decode_struct(data: &DataStruct) -> TokenStream {
+	let mut chain_commands = Punctuated::<TokenStream, Token![,]>::new();
+
+	for field in &data.fields {
+		let command = field.ident
+			.as_ref()
+			.map_or_else(
+				||           quote! { ::bzipper::Decode::decode(stream)? },
+				|field_name| quote! { #field_name: ::bzipper::Decode::decode(stream)? },
+			);
+
+		chain_commands.push(command);
+	}
+
+	let value = match data.fields {
+		Fields::Named(  ..) => quote! { Self { #chain_commands } },
+		Fields::Unnamed(..) => quote! { Self(#chain_commands) },
+		Fields::Unit        => quote! { Self },
+	};
+
+	quote! {
+		#[inline]
+		fn decode(stream: &mut ::bzipper::IStream) -> ::core::result::Result<Self, ::bzipper::error::DecodeError> {
+			let value = #value;
+			Ok(value)
+		}
+	}
+}