1 files changed, 77 insertions, 0 deletions
diff --git a/dom/base/gen-usecounters.py b/dom/base/gen-usecounters.py
new file mode 100755
index 0000000000..0a491319ec
--- /dev/null
+++ b/dom/base/gen-usecounters.py
@@ -0,0 +1,77 @@
+#!/usr/bin/env python
+
+# 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 __future__ import print_function
+
+import json
+import os
+import sys
+
+sys.path.append(os.path.dirname(__file__))
+
+import usecounters
+
+AUTOGENERATED_WARNING_COMMENT = (
+    "/* THIS FILE IS AUTOGENERATED BY gen-usecounters.py - DO NOT EDIT */"
+)
+
+
+def generate_list(f, counters):
+    def print_optional_macro_declare(name):
+        print(
+            """
+#ifndef %(name)s
+#define %(name)s(interface_, name_) // nothing
+#define DEFINED_%(name)s
+#endif
+"""
+            % {"name": name},
+            file=f,
+        )
+
+    def print_optional_macro_undeclare(name):
+        print(
+            """
+#ifdef DEFINED_%(name)s
+#undef DEFINED_%(name)s
+#undef %(name)s
+#endif
+"""
+            % {"name": name},
+            file=f,
+        )
+
+    print(AUTOGENERATED_WARNING_COMMENT, file=f)
+
+    print_optional_macro_declare("USE_COUNTER_DOM_METHOD")
+    print_optional_macro_declare("USE_COUNTER_DOM_ATTRIBUTE")
+    print_optional_macro_declare("USE_COUNTER_CUSTOM")
+
+    for counter in counters:
+        if counter["type"] == "method":
+            print(
+                "USE_COUNTER_DOM_METHOD(%s, %s)"
+                % (counter["interface_name"], counter["method_name"]),
+                file=f,
+            )
+        elif counter["type"] == "attribute":
+            print(
+                "USE_COUNTER_DOM_ATTRIBUTE(%s, %s)"
+                % (counter["interface_name"], counter["attribute_name"]),
+                file=f,
+            )
+        elif counter["type"] == "custom":
+            desc = counter["desc"].replace("\\", r"\\").replace('"', r"\"")
+            print('USE_COUNTER_CUSTOM(%s, "%s")' % (counter["name"], desc), file=f)
+
+    print_optional_macro_undeclare("USE_COUNTER_DOM_METHOD")
+    print_optional_macro_undeclare("USE_COUNTER_DOM_ATTRIBUTE")
+    print_optional_macro_undeclare("USE_COUNTER_CUSTOM")
+
+
+def use_counter_list(output_header, conf_filename):
+    counters = usecounters.read_conf(conf_filename)
+    generate_list(output_header, counters)