2 files changed, 16 insertions, 0 deletions
diff --git a/src/eval/styles.rs b/src/eval/styles.rs
index e52aa9f3..7fcaf734 100644
--- a/src/eval/styles.rs
+++ b/src/eval/styles.rs
@@ -539,6 +539,11 @@ impl<T> StyleVec<T> {
         self.items.is_empty()
     }
 
+    /// Number of items in the sequence.
+    pub fn len(&self) -> usize {
+        self.items.len()
+    }
+
     /// Iterate over the contained items.
     pub fn items(&self) -> std::slice::Iter<'_, T> {
         self.items.iter()
diff --git a/src/eval/value.rs b/src/eval/value.rs
index 8867b38a..0e0d08a8 100644
--- a/src/eval/value.rs
+++ b/src/eval/value.rs
@@ -491,6 +491,17 @@ impl<T> Smart<T> {
             Self::Custom(x) => x,
         }
     }
+
+    /// Returns the contained custom value or computes a default value.
+    pub fn unwrap_or_else<F>(self, f: F) -> T
+    where
+        F: FnOnce() -> T,
+    {
+        match self {
+            Self::Auto => f(),
+            Self::Custom(x) => x,
+        }
+    }
 }
 
 impl<T> Default for Smart<T> {