Dynamic labels

3 files changed, 8 insertions, 1 deletions

diff --git a/library/src/base/string.rs b/library/src/base/string.rs
index 262dd5c6..9c3b9562 100644
--- a/library/src/base/string.rs
+++ b/library/src/base/string.rs
@@ -14,11 +14,17 @@ pub fn str(_: &Vm, args: &mut Args) -> SourceResult<Value> {
     Ok(Value::Str(match v {
         Value::Int(v) => format_str!("{}", v),
         Value::Float(v) => format_str!("{}", v),
+        Value::Label(label) => label.0.into(),
         Value::Str(v) => v,
         v => bail!(span, "cannot convert {} to string", v.type_name()),
     }))
 }
 
+/// Create a label from a string.
+pub fn label(_: &Vm, args: &mut Args) -> SourceResult<Value> {
+    Ok(Value::Label(Label(args.expect("string")?)))
+}
+
 /// Create blind text.
 pub fn lorem(_: &Vm, args: &mut Args) -> SourceResult<Value> {
     let words: usize = args.expect("number of words")?;
diff --git a/library/src/lib.rs b/library/src/lib.rs
index dd527ed1..ea14c4c1 100644
--- a/library/src/lib.rs
+++ b/library/src/lib.rs
@@ -105,6 +105,7 @@ fn scope() -> Scope {
     std.def_fn("cmyk", base::cmyk);
     std.def_fn("repr", base::repr);
     std.def_fn("str", base::str);
+    std.def_fn("label", base::label);
     std.def_fn("regex", base::regex);
     std.def_fn("letter", base::letter);
     std.def_fn("roman", base::roman);
diff --git a/library/src/prelude.rs b/library/src/prelude.rs
index d2d82d3b..6379e579 100644
--- a/library/src/prelude.rs
+++ b/library/src/prelude.rs
@@ -16,7 +16,7 @@ pub use typst::geom::*;
 #[doc(no_inline)]
 pub use typst::model::{
     array, capability, castable, dict, dynamic, format_str, node, Args, Array, Cast,
-    Content, Dict, Finalize, Fold, Func, Node, NodeId, Resolve, Show, Smart, Str,
+    Content, Dict, Finalize, Fold, Func, Label, Node, NodeId, Resolve, Show, Smart, Str,
     StyleChain, StyleMap, StyleVec, Unlabellable, Value, Vm,
 };
 #[doc(no_inline)]