Merge pull request #2860 from Shopify/vs_add_missing_rbs_string_lifetime

Add missing RBSString lifetime

Author: soutaro

rust/ruby-rbs/build.rs

@@ -565,7 +565,7 @@ fn generate(config: &Config) -> Result<(), Box<dyn Error>> {
                 match field.c_type.as_str() {
                     "rbs_string" => {
                         writeln!(file, "    #[must_use]")?;
-                        writeln!(file, "    pub fn {}(&self) -> RBSString {{", field.name)?;
+                        writeln!(file, "    pub fn {}(&self) -> RBSString<'a> {{", field.name)?;
                         writeln!(
                             file,
                             "        RBSString::new(unsafe {{ &(*self.pointer).{} }})",

rust/ruby-rbs/src/node/mod.rs

@@ -238,14 +238,18 @@ impl Iterator for RBSLocationRangeListIter {
 }
 
 #[derive(Debug)]
-pub struct RBSString {
+pub struct RBSString<'a> {
     pointer: *const rbs_string_t,
+    marker: PhantomData<&'a rbs_string_t>,
 }
 
-impl RBSString {
+impl<'a> RBSString<'a> {
     #[must_use]
     pub fn new(pointer: *const rbs_string_t) -> Self {
-        Self { pointer }
+        Self {
+            pointer,
+            marker: PhantomData,
+        }
     }
 
     #[must_use]