Generate Mojom Types in Go

mojo/public/tools/bindings/generators/go_templates/union.tmpl

Index: mojo/public/tools/bindings/generators/go_templates/union.tmpl
diff --git a/mojo/public/tools/bindings/generators/go_templates/union.tmpl b/mojo/public/tools/bindings/generators/go_templates/union.tmpl
index aaea489fa1ded810e5715ce52df18161a3467664..8dc2c46e658fe5c507d1461dd05cd6d7b7c33b33 100644
--- a/mojo/public/tools/bindings/generators/go_templates/union.tmpl
+++ b/mojo/public/tools/bindings/generators/go_templates/union.tmpl
@@ -3,9 +3,10 @@
 // found in the LICENSE file.
 
 {% import "encoding_macros.tmpl" as encoding_macros %}
+{% import "mojom_type_macros.tmpl" as mojom_type_macros %}
+{% import "mojom_util_macros.tmpl" as util %}
 
-
-{% macro define(union, exported=True) %}
+{% macro define(union, typepkg, package, exported=True) %}
 type {{union|name(exported)}} interface {
 	Tag() uint32
 	Interface() interface{}
@@ -77,6 +78,18 @@ func (u *{{struct_name}}) decodeInternal(decoder *bindings.Decoder) error {
 
 {%   endfor %}
 
+// String names and labels used by the MojomUnion types.
+var (
+  unionName_{{union|name}} = "{{union|name}}"
+{% for field in union.fields %}
+  unionFieldName_{{union|name}}_{{field|name}} = "{{field|name}}"
+{% endfor %}
+)
+
+func {{util.typeName(union, typepkg, package)}}() {{typepkg}}MojomUnion {
+	return {{ mojom_type_macros.writeMojomType(typepkg, union, package, exported) }}
+} 
+
 {% endmacro %}
 
 {% macro encode_union_field(value, kind) %}