arb_stylus/
error.rs

1use thiserror::Error;
2use wasmer::MemoryAccessError;
3
4/// Error type for host I/O operations during WASM execution.
5#[derive(Error, Debug)]
6pub enum Escape {
7    #[error("failed to access memory: {0}")]
8    Memory(#[from] MemoryAccessError),
9
10    #[error("internal error: {0}")]
11    Internal(String),
12
13    #[error("logic error: {0}")]
14    Logical(String),
15
16    #[error("out of ink")]
17    OutOfInk,
18
19    #[error("exit early: {0}")]
20    Exit(u32),
21}
22
23impl Escape {
24    pub fn internal<T>(error: impl Into<String>) -> Result<T, Escape> {
25        Err(Self::Internal(error.into()))
26    }
27
28    pub fn logical<T>(error: impl Into<String>) -> Result<T, Escape> {
29        Err(Self::Logical(error.into()))
30    }
31
32    pub fn out_of_ink<T>() -> Result<T, Escape> {
33        Err(Self::OutOfInk)
34    }
35}
36
37impl From<std::io::Error> for Escape {
38    fn from(err: std::io::Error) -> Self {
39        Self::Internal(err.to_string())
40    }
41}
42
43pub type MaybeEscape = Result<(), Escape>;
arb_stylus/error.rs

arb_stylus/
error.rs
