Implement `rev()` method on string (#2013)

2 files changed, 6 insertions, 0 deletions

diff --git a/crates/typst/src/eval/methods.rs b/crates/typst/src/eval/methods.rs
index 6127a807..ed11d8a7 100644
--- a/crates/typst/src/eval/methods.rs
+++ b/crates/typst/src/eval/methods.rs
@@ -82,6 +82,7 @@ pub fn call(
                 let count = args.named("count")?;
                 string.replace(vm, pattern, with, count)?.into_value()
             }
+            "rev" => string.rev().into_value(),
             "trim" => {
                 let pattern = args.eat()?;
                 let at = args.named("at")?;
diff --git a/crates/typst/src/eval/str.rs b/crates/typst/src/eval/str.rs
index 30139f10..b21d2ff9 100644
--- a/crates/typst/src/eval/str.rs
+++ b/crates/typst/src/eval/str.rs
@@ -324,6 +324,11 @@ impl Str {
         Ok(Self(self.0.repeat(n)))
     }
 
+    /// Reverse the string.
+    pub fn rev(&self) -> Self {
+        self.as_str().graphemes(true).rev().collect::<String>().into()
+    }
+
     /// Resolve an index or throw an out of bounds error.
     fn locate(&self, index: i64) -> StrResult<usize> {
         self.locate_opt(index)?