Move pending input logic to ServoParser

components/script/dom/servoparser.rs

@@ -2,6 +2,7 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
+use dom::bindings::cell::DOMRefCell;
 use dom::bindings::reflector::Reflector;
 use dom::bindings::js::JS;
 use dom::document::Document;
@@ -11,6 +12,8 @@ pub struct ServoParser {
     reflector: Reflector,
     /// The document associated with this parser.
     document: JS<Document>,
+    /// Input chunks received but not yet passed to the parser.
+    pending_input: DOMRefCell<Vec<String>>,
 }
 
 impl ServoParser {
@@ -18,10 +21,28 @@ impl ServoParser {
         ServoParser {
             reflector: Reflector::new(),
             document: JS::from_ref(document),
+            pending_input: DOMRefCell::new(vec![]),
         }
     }
 
     pub fn document(&self) -> &Document {
         &self.document
     }
+
+    pub fn has_pending_input(&self) -> bool {
+        !self.pending_input.borrow().is_empty()
+    }
+
+    pub fn push_input_chunk(&self, chunk: String) {
+        self.pending_input.borrow_mut().push(chunk);
+    }
+
+    pub fn take_next_input_chunk(&self) -> Option<String> {
+        let mut pending_input = self.pending_input.borrow_mut();
+        if pending_input.is_empty() {
+            None
+        } else {
+            Some(pending_input.remove(0))
+        }
+    }
 }