use crate::{MigrationContext, Result};
pub struct FieldDescriptor {
pub name: &'static str,
pub type_hash: u64,
pub type_name: &'static str,
}
pub trait RpStateFields: Sized {
const FIELDS: &'static [FieldDescriptor];
const VERSION: u32;
const SCHEMA_HASH: u64;
const PARENT_PREFIX: &'static str;
const MIGRATION_DEPS: &'static [&'static str];
fn load_struct(ctx: &mut MigrationContext) -> Result<Self>;
fn save_struct(&self, ctx: &mut MigrationContext) -> Result<()>;
}