Update mojo sdk to rev 8af2ccff2eee4bfca1043015abee30482a030b30

third_party/mojo/src/mojo/public/tools/bindings/generators/cpp_templates/union_definition.tmpl

Index: third_party/mojo/src/mojo/public/tools/bindings/generators/cpp_templates/union_definition.tmpl
diff --git a/third_party/mojo/src/mojo/public/tools/bindings/generators/cpp_templates/union_definition.tmpl b/third_party/mojo/src/mojo/public/tools/bindings/generators/cpp_templates/union_definition.tmpl
new file mode 100644
index 0000000000000000000000000000000000000000..9f6f02f0d8a525d480effd45bccce100619bfbfc
--- /dev/null
+++ b/third_party/mojo/src/mojo/public/tools/bindings/generators/cpp_templates/union_definition.tmpl
@@ -0,0 +1,54 @@
+{%- import "validation_macros.tmpl" as validation_macros %}
+{%- set class_name = union.name ~ "_Data" %}
+{%- set enum_name = union.name ~ "_Tag" -%}
+
+// static
+{{class_name}}* {{class_name}}::New(mojo::internal::Buffer* buf) {
+  return new (buf->Allocate(sizeof({{class_name}}))) {{class_name}}();
+}
+
+// static
+bool {{class_name}}::Validate(const void* data,
+                              mojo::internal::BoundsChecker* bounds_checker) {
+  if (!data) {
+    return true;
+  }
+
+  if (!mojo::internal::IsAligned(data)) {
+    ReportValidationError(mojo::internal::VALIDATION_ERROR_MISALIGNED_OBJECT);
+    return false;
+  }
+
+  if (!bounds_checker->ClaimMemory(data, sizeof({{class_name}}))) {
+    ReportValidationError(
+        mojo::internal::VALIDATION_ERROR_ILLEGAL_MEMORY_RANGE);
+    return false;
+  }
+  const {{class_name}}* object = static_cast<const {{class_name}}*>(data);
+  MOJO_ALLOW_UNUSED_LOCAL(object);
+
+  switch (object->tag) {
+{%  for field in union.fields %}
+    case {{enum_name}}::{{field.name|upper}}:
+{{ validation_macros.validate_union_field(field, union)|indent(6) }}
+{%- endfor %}
+    default:
+      ReportValidationError(
+          mojo::internal::VALIDATION_ERROR_UNKOWN_UNION_TAG,
+          "unknown tag in {{union.name}}");
+      return false;
+  }
+}
+
+{{class_name}}::{{class_name}}() {
+}
+
+void {{class_name}}::EncodePointersAndHandles(
+    std::vector<mojo::Handle>* handles) {
+  // TODO(azani): Implement pointers and handles.
+}
+
+void {{class_name}}::DecodePointersAndHandles(
+    std::vector<mojo::Handle>* handles) {
+  // TODO(azani): Implement pointers and handles.
+}