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use crate::{
api::{ErrorApi, ManagedTypeApi},
signal_arg_de_error, ArgId, DynArgInput,
};
use elrond_codec::*;
pub trait DynArg: Sized {
fn dyn_load<I: DynArgInput>(loader: &mut I, arg_id: ArgId) -> Self;
}
impl<T> DynArg for T
where
T: TopEncode + TopDecode,
{
fn dyn_load<I: DynArgInput>(loader: &mut I, arg_id: ArgId) -> Self {
if let TypeInfo::Unit = <T as TopDecode>::TYPE_INFO {
let cast_unit: T = unsafe { core::mem::transmute_copy(&()) };
return cast_unit;
}
let dyn_arg_vm_api = loader.dyn_arg_vm_api();
let arg_input = loader.next_arg_input();
T::top_decode_or_exit(arg_input, (dyn_arg_vm_api, arg_id), dyn_load_exit)
}
}
#[inline(always)]
fn dyn_load_exit<EA>(ctx: (EA, ArgId), de_err: DecodeError) -> !
where
EA: ErrorApi + ManagedTypeApi,
{
let (api, arg_id) = ctx;
signal_arg_de_error(api, arg_id, de_err)
}