static void test_mapentry_check() {
upb_status s = UPB_STATUS_INIT;
upb_msgdef *m = upb_msgdef_new(&m);
upb_fielddef *f = upb_fielddef_new(&f);
upb_symtab *symtab = upb_symtab_new(&symtab);
upb_msgdef *subm = upb_msgdef_new(&subm);
upb_def *defs[2];
upb_msgdef_setfullname(m, "TestMessage", &s);
upb_fielddef_setname(f, "field1", &s);
upb_fielddef_setnumber(f, 1, &s);
upb_fielddef_setlabel(f, UPB_LABEL_OPTIONAL);
upb_fielddef_settype(f, UPB_TYPE_MESSAGE);
upb_fielddef_setsubdefname(f, ".MapEntry", &s);
upb_msgdef_addfield(m, f, &f, &s);
ASSERT(upb_ok(&s));
upb_msgdef_setfullname(subm, "MapEntry", &s);
upb_msgdef_setmapentry(subm, true);
defs[0] = upb_msgdef_upcast_mutable(m);
defs[1] = upb_msgdef_upcast_mutable(subm);
upb_symtab_add(symtab, defs, 2, NULL, &s);
/* Should not have succeeded: non-repeated field pointing to a MapEntry. */
ASSERT(!upb_ok(&s));
upb_fielddef_setlabel(f, UPB_LABEL_REPEATED);
upb_symtab_add(symtab, defs, 2, NULL, &s);
ASSERT(upb_ok(&s));
upb_symtab_unref(symtab, &symtab);
upb_msgdef_unref(subm, &subm);
upb_msgdef_unref(m, &m);
}
static void test_descriptor_flags() {
upb_msgdef *m = upb_msgdef_new(&m);
upb_msgdef *m2;
upb_status s = UPB_STATUS_INIT;
ASSERT(upb_msgdef_mapentry(m) == false);
upb_msgdef_setfullname(m, "TestMessage", &s);
ASSERT(upb_ok(&s));
upb_msgdef_setmapentry(m, true);
ASSERT(upb_msgdef_mapentry(m) == true);
m2 = upb_msgdef_dup(m, &m2);
ASSERT(upb_msgdef_mapentry(m2) == true);
upb_msgdef_unref(m, &m);
upb_msgdef_unref(m2, &m2);
}
/*
* call-seq:
* MessageBuilderContext.map(name, key_type, value_type, number,
* value_type_class = nil)
*
* Defines a new map field on this message type with the given key and value
* types, tag number, and type class (for message and enum value types). The key
* type must be :int32/:uint32/:int64/:uint64, :bool, or :string. The value type
* type must be a Ruby symbol (as accepted by FieldDescriptor#type=) and the
* type_class must be a string, if present (as accepted by
* FieldDescriptor#submsg_name=).
*/
VALUE MessageBuilderContext_map(int argc, VALUE* argv, VALUE _self) {
DEFINE_SELF(MessageBuilderContext, self, _self);
if (argc < 4) {
rb_raise(rb_eArgError, "Expected at least 4 arguments.");
}
VALUE name = argv[0];
VALUE key_type = argv[1];
VALUE value_type = argv[2];
VALUE number = argv[3];
VALUE type_class = (argc > 4) ? argv[4] : Qnil;
// Validate the key type. We can't accept enums, messages, or floats/doubles
// as map keys. (We exclude these explicitly, and the field-descriptor setter
// below then ensures that the type is one of the remaining valid options.)
if (SYM2ID(key_type) == rb_intern("float") ||
SYM2ID(key_type) == rb_intern("double") ||
SYM2ID(key_type) == rb_intern("enum") ||
SYM2ID(key_type) == rb_intern("message")) {
rb_raise(rb_eArgError,
"Cannot add a map field with a float, double, enum, or message "
"type.");
}
// Create a new message descriptor for the map entry message, and create a
// repeated submessage field here with that type.
VALUE mapentry_desc = rb_class_new_instance(0, NULL, cDescriptor);
VALUE mapentry_desc_name = rb_funcall(self->descriptor, rb_intern("name"), 0);
mapentry_desc_name = rb_str_cat2(mapentry_desc_name, "_MapEntry_");
mapentry_desc_name = rb_str_cat2(mapentry_desc_name,
rb_id2name(SYM2ID(name)));
Descriptor_name_set(mapentry_desc, mapentry_desc_name);
// The 'mapentry' attribute has no Ruby setter because we do not want the user
// attempting to DIY the setup below; we want to ensure that the fields are
// correct. So we reach into the msgdef here to set the bit manually.
Descriptor* mapentry_desc_self = ruby_to_Descriptor(mapentry_desc);
upb_msgdef_setmapentry((upb_msgdef*)mapentry_desc_self->msgdef, true);
// optional <type> key = 1;
VALUE key_field = rb_class_new_instance(0, NULL, cFieldDescriptor);
FieldDescriptor_name_set(key_field, rb_str_new2("key"));
FieldDescriptor_label_set(key_field, ID2SYM(rb_intern("optional")));
FieldDescriptor_number_set(key_field, INT2NUM(1));
FieldDescriptor_type_set(key_field, key_type);
Descriptor_add_field(mapentry_desc, key_field);
// optional <type> value = 2;
VALUE value_field = rb_class_new_instance(0, NULL, cFieldDescriptor);
FieldDescriptor_name_set(value_field, rb_str_new2("value"));
FieldDescriptor_label_set(value_field, ID2SYM(rb_intern("optional")));
FieldDescriptor_number_set(value_field, INT2NUM(2));
FieldDescriptor_type_set(value_field, value_type);
if (type_class != Qnil) {
VALUE submsg_name = rb_str_new2("."); // prepend '.' to make name absolute.
submsg_name = rb_str_append(submsg_name, type_class);
FieldDescriptor_submsg_name_set(value_field, submsg_name);
}
Descriptor_add_field(mapentry_desc, value_field);
// Add the map-entry message type to the current builder, and use the type to
// create the map field itself.
Builder* builder_self = ruby_to_Builder(self->builder);
rb_ary_push(builder_self->pending_list, mapentry_desc);
VALUE map_field = rb_class_new_instance(0, NULL, cFieldDescriptor);
VALUE name_str = rb_str_new2(rb_id2name(SYM2ID(name)));
FieldDescriptor_name_set(map_field, name_str);
FieldDescriptor_number_set(map_field, number);
FieldDescriptor_label_set(map_field, ID2SYM(rb_intern("repeated")));
FieldDescriptor_type_set(map_field, ID2SYM(rb_intern("message")));
VALUE submsg_name = rb_str_new2("."); // prepend '.' to make name absolute.
submsg_name = rb_str_append(submsg_name, mapentry_desc_name);
FieldDescriptor_submsg_name_set(map_field, submsg_name);
Descriptor_add_field(self->descriptor, map_field);
return Qnil;
}
