[WIP] Label and reference syntax

2 files changed, 30 insertions, 0 deletions

diff --git a/src/library/structure/mod.rs b/src/library/structure/mod.rs
index a597211e..088d1e6c 100644
--- a/src/library/structure/mod.rs
+++ b/src/library/structure/mod.rs
@@ -3,9 +3,11 @@
 mod doc;
 mod heading;
 mod list;
+mod reference;
 mod table;
 
 pub use doc::*;
 pub use heading::*;
 pub use list::*;
+pub use reference::*;
 pub use table::*;
diff --git a/src/library/structure/reference.rs b/src/library/structure/reference.rs
new file mode 100644
index 00000000..0eeb4bf5
--- /dev/null
+++ b/src/library/structure/reference.rs
@@ -0,0 +1,28 @@
+use crate::library::prelude::*;
+
+/// A reference to a label.
+#[derive(Debug, Hash)]
+pub struct RefNode(pub EcoString);
+
+#[node(showable)]
+impl RefNode {
+    fn construct(_: &mut Machine, args: &mut Args) -> TypResult<Content> {
+        Ok(Content::show(Self(args.expect("label")?)))
+    }
+}
+
+impl Show for RefNode {
+    fn unguard(&self, _: Selector) -> ShowNode {
+        Self(self.0.clone()).pack()
+    }
+
+    fn encode(&self, _: StyleChain) -> Dict {
+        dict! {
+            "label" => Value::Str(self.0.clone().into()),
+        }
+    }
+
+    fn realize(&self, _: &mut Context, _: StyleChain) -> TypResult<Content> {
+        Ok(Content::Text(format_eco!("@{}", self.0)))
+    }
+}