multiversx_sc/contract_base/wrappers/
error_helper.rs

1use core::{borrow::Borrow, marker::PhantomData};
2
3use crate::codec::{DecodeError, EncodeError};
4
5use crate::{
6    api::{ErrorApiImpl, ManagedTypeApi},
7    types::{ManagedBuffer, ManagedSCError, ManagedType, heap::BoxedBytes},
8};
9
10#[derive(Default)]
11pub struct ErrorHelper<M: ManagedTypeApi> {
12    _phantom: PhantomData<M>,
13}
14
15impl<M: ManagedTypeApi> ErrorHelper<M> {
16    pub fn new() -> Self {
17        ErrorHelper {
18            _phantom: PhantomData,
19        }
20    }
21
22    pub fn new_error(&self) -> ManagedSCError<M> {
23        ManagedSCError::new_empty()
24    }
25
26    pub fn signal_error_with_message<T>(message: T) -> !
27    where
28        T: IntoSignalError<M>,
29    {
30        message.signal_error_with_message()
31    }
32}
33
34/// Indicates how an object can be used as the basis for performing `signal_error` with itself as message.
35pub trait IntoSignalError<M: ManagedTypeApi> {
36    fn signal_error_with_message(self) -> !;
37}
38
39impl<M: ManagedTypeApi> IntoSignalError<M> for &str {
40    #[inline]
41    fn signal_error_with_message(self) -> ! {
42        M::error_api_impl().signal_error(self.as_bytes())
43    }
44}
45
46impl<M: ManagedTypeApi> IntoSignalError<M> for &[u8] {
47    #[inline]
48    fn signal_error_with_message(self) -> ! {
49        M::error_api_impl().signal_error(self)
50    }
51}
52
53impl<M: ManagedTypeApi> IntoSignalError<M> for BoxedBytes {
54    #[inline]
55    fn signal_error_with_message(self) -> ! {
56        M::error_api_impl().signal_error(self.as_slice())
57    }
58}
59
60impl<M: ManagedTypeApi> IntoSignalError<M> for EncodeError {
61    #[inline]
62    fn signal_error_with_message(self) -> ! {
63        M::error_api_impl().signal_error(self.message_bytes())
64    }
65}
66
67impl<M: ManagedTypeApi> IntoSignalError<M> for DecodeError {
68    #[inline]
69    fn signal_error_with_message(self) -> ! {
70        M::error_api_impl().signal_error(self.message_bytes())
71    }
72}
73
74// Handles `ManagedBuffer`, `&ManagedBuffer` and `ManagedRef<ManagedBuffer>`.
75impl<M, B> IntoSignalError<M> for B
76where
77    M: ManagedTypeApi,
78    B: Borrow<ManagedBuffer<M>>,
79{
80    fn signal_error_with_message(self) -> ! {
81        M::error_api_impl().signal_error_from_buffer(self.borrow().get_handle())
82    }
83}
multiversx_sc/contract_base/wrappers/error_helper.rs

multiversx_sc/contract_base/wrappers/
error_helper.rs
