static const upb_pbdecodermethod *msgdef_decodermethod(Descriptor* desc) {
if (desc->fill_method == NULL) {
desc->fill_method = new_fillmsg_decodermethod(
desc, &desc->fill_method);
}
return desc->fill_method;
}
VALUE build_class_from_descriptor(Descriptor* desc) {
const char *name;
VALUE klass;
if (desc->layout == NULL) {
desc->layout = create_layout(desc->msgdef);
}
if (desc->fill_method == NULL) {
desc->fill_method = new_fillmsg_decodermethod(desc, &desc->fill_method);
}
name = upb_msgdef_fullname(desc->msgdef);
if (name == NULL) {
rb_raise(rb_eRuntimeError, "Descriptor does not have assigned name.");
}
klass = rb_define_class_id(
// Docs say this parameter is ignored. User will assign return value to
// their own toplevel constant class name.
rb_intern("Message"),
rb_cObject);
rb_ivar_set(klass, descriptor_instancevar_interned,
get_def_obj(desc->msgdef));
rb_define_alloc_func(klass, Message_alloc);
rb_require("google/protobuf/message_exts");
rb_include_module(klass, rb_eval_string("::Google::Protobuf::MessageExts"));
rb_extend_object(
klass, rb_eval_string("::Google::Protobuf::MessageExts::ClassMethods"));
rb_define_method(klass, "method_missing",
Message_method_missing, -1);
rb_define_method(klass, "respond_to_missing?",
Message_respond_to_missing, -1);
rb_define_method(klass, "initialize", Message_initialize, -1);
rb_define_method(klass, "dup", Message_dup, 0);
// Also define #clone so that we don't inherit Object#clone.
rb_define_method(klass, "clone", Message_dup, 0);
rb_define_method(klass, "==", Message_eq, 1);
rb_define_method(klass, "hash", Message_hash, 0);
rb_define_method(klass, "to_h", Message_to_h, 0);
rb_define_method(klass, "to_hash", Message_to_h, 0);
rb_define_method(klass, "inspect", Message_inspect, 0);
rb_define_method(klass, "[]", Message_index, 1);
rb_define_method(klass, "[]=", Message_index_set, 2);
rb_define_singleton_method(klass, "decode", Message_decode, 1);
rb_define_singleton_method(klass, "encode", Message_encode, 1);
rb_define_singleton_method(klass, "decode_json", Message_decode_json, -1);
rb_define_singleton_method(klass, "encode_json", Message_encode_json, -1);
rb_define_singleton_method(klass, "descriptor", Message_descriptor, 0);
return klass;
}