1 files changed, 41 insertions, 0 deletions
diff --git a/layout/generic/GenerateFrameLists.py b/layout/generic/GenerateFrameLists.py
new file mode 100644
index 0000000000..af2c60922b
--- /dev/null
+++ b/layout/generic/GenerateFrameLists.py
@@ -0,0 +1,41 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# 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/.
+
+from FrameClasses import FRAME_CLASSES
+
+HEADER = "// THIS IS AUTOGENERATED BY GenerateFrameLists.py.  DO NOT EDIT\n"
+
+
+# Returns a list of list of FrameClass objects.  The outermost list groups
+# the FrameClasses by their frame type, and is sorted from the largest group
+# to the smallest, and otherwise sorted by the frame type or class name.
+def grouped_frame_classes():
+    groups = dict()
+    for frame in FRAME_CLASSES:
+        if frame.is_concrete:
+            groups.setdefault(frame.ty, []).append(frame)
+    groups = groups.values()
+    return sorted(groups, key=lambda x: (-len(x), x[0].ty if len(x) > 1 else x[0].cls))
+
+
+def generate_frame_id_list_h(output, *ignore):
+    groups = grouped_frame_classes()
+    output.write(HEADER)
+    for group in groups:
+        for frame in group:
+            output.write(
+                "FRAME_ID(%s, %s, %s)\n" % (frame.cls, frame.ty, frame.leafness)
+            )
+    for frame in FRAME_CLASSES:
+        if not frame.is_concrete:
+            output.write("ABSTRACT_FRAME_ID(%s)\n" % frame.cls)
+
+
+def generate_frame_type_list_h(output, *ignore):
+    groups = grouped_frame_classes()
+    output.write(HEADER)
+    for group in groups:
+        output.write(
+            "FRAME_TYPE(%s, %s, %s)\n" % (group[0].ty, group[0].cls, group[-1].cls)
+        )