1 files changed, 74 insertions, 0 deletions
diff --git a/bzipper_macros/src/generic_name/mod.rs b/bzipper_macros/src/generic_name/mod.rs
new file mode 100644
index 0000000..a0c51f5
--- /dev/null
+++ b/bzipper_macros/src/generic_name/mod.rs
@@ -0,0 +1,74 @@
+// 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::ToTokens;
+use syn::{
+	GenericParam,
+	Generics,
+	Ident,
+	Lifetime,
+	Token,
+	punctuated::Punctuated,
+};
+
+/// A name of a genric.
+#[derive(Clone)]
+pub enum GenericName {
+	Const(   Ident),
+	Lifetime(Lifetime),
+	Type(    Ident),
+}
+
+impl GenericName {
+	/// Extracts the names of the given generics.
+	#[must_use]
+	pub fn extract_from(generics: &Generics) -> Punctuated<Self, Token![,]> {
+		let mut names = Punctuated::new();
+
+		for generic in &generics.params {
+			let name = match *generic {
+				GenericParam::Const(   ref param) => Self::Const(   param.ident.clone()),
+				GenericParam::Lifetime(ref param) => Self::Lifetime(param.lifetime.clone()),
+				GenericParam::Type(    ref param) => Self::Type(    param.ident.clone()),
+			};
+
+			names.push(name);
+		}
+
+		names
+		}
+}
+
+impl ToTokens for GenericName {
+	#[inline(always)]
+	fn to_tokens(&self, tokens: &mut TokenStream) {
+		use GenericName::*;
+
+		match *self {
+			| Const(ref ident)
+			| Type( ref ident)
+			=> ident.to_tokens(tokens),
+
+			Lifetime(ref lifetime) => lifetime.to_tokens(tokens),
+		}
+	}
+}