ferrunix_core/
error.rs

1//! All errors that might happen.
2#![allow(clippy::module_name_repetitions)]
3
4use thiserror::Error;
5
6use crate::cycle_detection::ValidationError;
7use crate::types::BoxErr;
8
9/// Errors happening during resolving of types.
10#[derive(Debug, Error)]
11#[non_exhaustive]
12pub enum ResolveError {
13    /// Some of the required dependencies are missing.
14    #[error("missing dependencies")]
15    DependenciesMissing,
16
17    /// Validation failed. Check the underlying error.
18    #[error("validation failed: {0}")]
19    Validation(#[from] ValidationError),
20
21    /// Type is missing, possibly never registered.
22    #[error("type missing: {typename}")]
23    TypeMissing {
24        /// Name of the type that was attempted to be resolved.
25        typename: &'static str,
26    },
27
28    /// The constructor returned an error.
29    #[error("error from constructor: {0}")]
30    Ctor(BoxErr),
31
32    /// An error in the implementation happened.
33    #[error("implementation error: {0}")]
34    Impl(#[from] ImplErrors),
35}
36
37/// Implementation errors. These errors represent internal errors that are usually
38/// the fault of the people implementing `ferrunix`, not the users.
39#[derive(Debug, Error)]
40#[non_exhaustive]
41pub enum ImplErrors {
42    /// The type returned by the constructor is different from the type that we cast it to.
43    #[error("type mismatch")]
44    TypeMismatch,
45}
46
47impl ResolveError {
48    /// Returns true if the underlying error was produced by a failure in one of the constructors
49    /// registered.
50    pub fn is_ctor_err(&self) -> bool {
51        matches!(self, Self::Ctor(_))
52    }
53
54    /// Returns the underlying error that was produced by the failure in one of the registered
55    /// constructors, or `None` if it's another error.
56    pub fn ctor_err(&self) -> Option<&BoxErr> {
57        match self {
58            Self::Ctor(error) => Some(error),
59            _ => None,
60        }
61    }
62}
ferrunix_core/error.rs

ferrunix_core/
error.rs
