Implement CEReactions codegen

components/script/dom/bindings/codegen/CodegenRust.py

@@ -3152,7 +3152,7 @@ class CGCallGenerator(CGThing):
     """
     def __init__(self, errorResult, arguments, argsPre, returnType,
                  extendedAttributes, descriptor, nativeMethodName,
-                 static, object="this"):
+                 static, object="this", hasCEReactions=False):
         CGThing.__init__(self)
 
         assert errorResult is None or isinstance(errorResult, str)
@@ -3185,6 +3185,9 @@ class CGCallGenerator(CGThing):
             call = CGWrapper(call, pre="%s." % object)
         call = CGList([call, CGWrapper(args, pre="(", post=")")])
 
+        if hasCEReactions:
+            self.cgRoot.append(CGGeneric("push_new_element_queue();\n"))
+
         self.cgRoot.append(CGList([
             CGGeneric("let result: "),
             result,
@@ -3193,6 +3196,9 @@ class CGCallGenerator(CGThing):
             CGGeneric(";"),
         ]))
 
+        if hasCEReactions:
+            self.cgRoot.append(CGGeneric("pop_current_element_queue();\n"))
+
         if isFallible:
             if static:
                 glob = "global.upcast::<GlobalScope>()"
@@ -3267,11 +3273,12 @@ class CGPerSignatureCall(CGThing):
                                                           idlNode.maplikeOrSetlikeOrIterable,
                                                           idlNode.identifier.name))
         else:
+            hasCEReactions = idlNode.getExtendedAttribute("CEReactions")
             cgThings.append(CGCallGenerator(
                 errorResult,
                 self.getArguments(), self.argsPre, returnType,
                 self.extendedAttributes, descriptor, nativeMethodName,
-                static))
+                static, hasCEReactions=hasCEReactions))
 
         self.cgRoot = CGList(cgThings, "\n")
 
@@ -5642,6 +5649,8 @@ def generate_imports(config, cgthings, descriptors, callbacks=None, dictionaries
         'dom::bindings::interface::define_guarded_properties',
         'dom::bindings::interface::html_constructor',
         'dom::bindings::interface::is_exposed_in',
+        'dom::bindings::interface::pop_current_element_queue',
+        'dom::bindings::interface::push_new_element_queue',
         'dom::bindings::iterable::Iterable',
         'dom::bindings::iterable::IteratorType',
         'dom::bindings::js::JS',

components/script/dom/bindings/interface.rs

@@ -103,6 +103,7 @@ use js::jsapi::{TrueHandleValue, Value};
 use js::jsval::{JSVal, PrivateValue};
 use js::rust::{define_methods, define_properties, get_object_class};
 use libc;
+use script_thread::ScriptThread;
 use std::ptr;
 
 /// The class of a non-callback interface object.
@@ -300,6 +301,14 @@ pub unsafe fn html_constructor<T>(window: &Window, call_args: &CallArgs) -> Fall
     // Custom element upgrades are not implemented yet, so these steps are unnecessary.
 }
 
+pub fn push_new_element_queue() {
+    ScriptThread::push_new_element_queue();
+}
+
+pub fn pop_current_element_queue() {
+    ScriptThread::pop_current_element_queue();
+}
+
 /// Create and define the interface object of a callback interface.
 pub unsafe fn create_callback_interface_object(
         cx: *mut JSContext,