Add typed attribute keys: attrs! macro, Attr trait, and typed accessors

node-graph/nodes/text/src/attr.rs

@@ -0,0 +1,23 @@
+//! Typed attribute keys whose value types live in this crate. See `core_types::attr` for the trait and macro.
+
+use graphene_resource::Resource;
+
+node_macro::attrs! {
+	/// Text item's font, as a resource of the loaded font file.
+	Font: Resource,
+	/// Text item's horizontal alignment of lines within the block.
+	TextAlign: crate::TextAlign,
+}
+
+#[cfg(test)]
+mod tests {
+	use super::*;
+	use core_types::attr::Attr;
+
+	// Key names are the stored document format — pinned as literals so a key rename shows up as a breaking change.
+	#[test]
+	fn key_names_are_pinned() {
+		assert_eq!(Font::name(), "font");
+		assert_eq!(TextAlign::name(), "text_align");
+	}
+}

node-graph/nodes/text/src/lib.rs

@@ -1,3 +1,4 @@
+pub mod attr;
 pub mod fallback;
 mod font;
 pub mod json;