Mojo: add support for {double,float}.{INFINITY,NEGATIVE_INFINITY,NAN}

mojo/public/tools/bindings/generators/mojom_cpp_generator.py

Index: mojo/public/tools/bindings/generators/mojom_cpp_generator.py
diff --git a/mojo/public/tools/bindings/generators/mojom_cpp_generator.py b/mojo/public/tools/bindings/generators/mojom_cpp_generator.py
index ada87e2445afab3c3caf907ab347dcb260b516db..507f9d2447dbe966b9874a6831677378d2db8f80 100644
--- a/mojo/public/tools/bindings/generators/mojom_cpp_generator.py
+++ b/mojo/public/tools/bindings/generators/mojom_cpp_generator.py
@@ -223,6 +223,16 @@ def TranslateConstants(token, kind):
     else:
       name.append(token.name)
     return "::".join(name)
+
+  if isinstance(token, mojom.BuiltinValue):
+    if token.value == "double.INFINITY" or token.value == "float.INFINITY":
+      return "INFINITY";
+    if token.value == "double.NEGATIVE_INFINITY" or \
+       token.value == "float.NEGATIVE_INFINITY":
+      return "-INFINITY";
+    if token.value == "double.NAN" or token.value == "float.NAN":
+      return "NAN";
+
   return '%s%s' % (token, _kind_to_cpp_literal_suffix.get(kind, ''))
 
 def ExpressionToText(value, kind=None):