Update mojo sdk to rev 8af2ccff2eee4bfca1043015abee30482a030b30

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

Index: third_party/mojo/src/mojo/public/tools/bindings/generators/cpp_templates/validation_macros.tmpl
diff --git a/third_party/mojo/src/mojo/public/tools/bindings/generators/cpp_templates/validation_macros.tmpl b/third_party/mojo/src/mojo/public/tools/bindings/generators/cpp_templates/validation_macros.tmpl
new file mode 100644
index 0000000000000000000000000000000000000000..5a328f9e2b1555aaa39c9eda7298cf40edab99fe
--- /dev/null
+++ b/third_party/mojo/src/mojo/public/tools/bindings/generators/cpp_templates/validation_macros.tmpl
@@ -0,0 +1,43 @@
+{%- macro validate_not_null_ptr(field_expr, field, object_name) %}
+if (!{{field_expr}}->offset) {
+  ReportValidationError(
+      mojo::internal::VALIDATION_ERROR_UNEXPECTED_NULL_POINTER,
+      "null {{field.name}} field in {{object_name}}");
+  return false;
+}
+{%- endmacro %}
+
+{%- macro validate_encoded_ptr(field_expr) %}
+if (!mojo::internal::ValidateEncodedPointer(&{{field_expr}}->offset)) {
+  ReportValidationError(mojo::internal::VALIDATION_ERROR_ILLEGAL_POINTER);
+  return false;
+}
+{%- endmacro %}
+
+{%- macro validate_array_or_string(field_expr, field) -%}
+if (!{{field.kind|cpp_wrapper_type}}::Data_::Validate<
+    {{field.kind|get_array_validate_params}}>(
+        mojo::internal::DecodePointerRaw(&{{field_expr}}->offset),
+        bounds_checker)) {
+  return false;
+}
+{%- endmacro %}
+
+{%- macro validate_union_field(field, union) %}
+{%-   set field_expr = "(reinterpret_cast<const "
+    ~ field.kind|cpp_field_type
+    ~ "*>(&object->data.f_"
+    ~ field.name
+    ~ "))" -%}
+{%-   if field.kind|is_object_kind -%}
+{%-     if not field.kind|is_nullable_kind -%}
+{{        validate_not_null_ptr(field_expr, field, union.name) }}
+{%-     endif %}
+{{      validate_encoded_ptr(field_expr) }}
+{%-   endif %}
+
+{%-   if field.kind|is_array_kind or field.kind|is_string_kind -%}
+{{      validate_array_or_string(field_expr, field) }}
+{%-   endif %}
+return true;
+{%- endmacro %}