Split crates

1 files changed, 29 insertions, 0 deletions

diff --git a/library/src/structure/reference.rs b/library/src/structure/reference.rs
new file mode 100644
index 00000000..632ecba5
--- /dev/null
+++ b/library/src/structure/reference.rs
@@ -0,0 +1,29 @@
+use crate::prelude::*;
+
+/// A reference to a label.
+#[derive(Debug, Hash)]
+pub struct RefNode(pub EcoString);
+
+#[node(Show)]
+impl RefNode {
+    fn construct(_: &mut Vm, args: &mut Args) -> SourceResult<Content> {
+        Ok(Self(args.expect("label")?).pack())
+    }
+}
+
+impl Show for RefNode {
+    fn unguard_parts(&self, _: Selector) -> Content {
+        Self(self.0.clone()).pack()
+    }
+
+    fn field(&self, name: &str) -> Option<Value> {
+        match name {
+            "label" => Some(Value::Str(self.0.clone().into())),
+            _ => None,
+        }
+    }
+
+    fn realize(&self, _: Tracked<dyn World>, _: StyleChain) -> SourceResult<Content> {
+        Ok(TextNode(format_eco!("@{}", self.0)).pack())
+    }
+}