More type safety for spans

1 files changed, 3 insertions, 3 deletions

diff --git a/crates/typst-syntax/src/node.rs b/crates/typst-syntax/src/node.rs
index 8e4e056e..77c73f58 100644
--- a/crates/typst-syntax/src/node.rs
+++ b/crates/typst-syntax/src/node.rs
@@ -202,7 +202,7 @@ impl SyntaxNode {
             return Err(Unnumberable);
         }
 
-        let mid = Span::new(id, (within.start + within.end) / 2);
+        let mid = Span::new(id, (within.start + within.end) / 2).unwrap();
         match &mut self.0 {
             Repr::Leaf(leaf) => leaf.span = mid,
             Repr::Inner(inner) => Arc::make_mut(inner).numberize(id, None, within)?,
@@ -424,7 +424,7 @@ impl InnerNode {
         let mut start = within.start;
         if range.is_none() {
             let end = start + stride;
-            self.span = Span::new(id, (start + end) / 2);
+            self.span = Span::new(id, (start + end) / 2).unwrap();
             self.upper = within.end;
             start = end;
         }
@@ -448,6 +448,7 @@ impl InnerNode {
         mut range: Range<usize>,
         replacement: Vec<SyntaxNode>,
     ) -> NumberingResult {
+        let Some(id) = self.span.id() else { return Err(Unnumberable) };
         let superseded = &self.children[range.clone()];
 
         // Compute the new byte length.
@@ -505,7 +506,6 @@ impl InnerNode {
 
             // Try to renumber.
             let within = start_number..end_number;
-            let id = self.span.id();
             if self.numberize(id, Some(renumber), within).is_ok() {
                 return Ok(());
             }