1 files changed, 44 insertions, 0 deletions
diff --git a/third_party/rust/fluent-bundle/src/resource.rs b/third_party/rust/fluent-bundle/src/resource.rs
new file mode 100644
index 0000000000..ef5dada797
--- /dev/null
+++ b/third_party/rust/fluent-bundle/src/resource.rs
@@ -0,0 +1,44 @@
+use fluent_syntax::ast;
+use fluent_syntax::parser::Parser;
+use fluent_syntax::parser::ParserError;
+use ouroboros::self_referencing;
+
+#[self_referencing]
+#[derive(Debug)]
+pub struct InnerFluentResource {
+    string: String,
+    #[borrows(string)]
+    ast: ast::Resource<&'this str>,
+}
+
+/// A resource containing a list of localization messages.
+#[derive(Debug)]
+pub struct FluentResource(InnerFluentResource);
+
+impl FluentResource {
+    pub fn try_new(source: String) -> Result<Self, (Self, Vec<ParserError>)> {
+        let mut errors = None;
+
+        let res = InnerFluentResourceBuilder {
+            string: source,
+            ast_builder: |string: &str| match Parser::new(string).parse() {
+                Ok(ast) => ast,
+                Err((ast, err)) => {
+                    errors = Some(err);
+                    ast
+                }
+            },
+        }
+        .build();
+
+        if let Some(errors) = errors {
+            Err((Self(res), errors))
+        } else {
+            Ok(Self(res))
+        }
+    }
+
+    pub fn ast(&self) -> &ast::Resource<&str> {
+        self.0.borrow_ast()
+    }
+}