openscad_rs/
error.rs

1/// Error types for the `OpenSCAD` parser.
2use crate::span::Span;
3use miette::Diagnostic;
4use thiserror::Error;
5
6/// A parse error with source location.
7#[derive(Error, Debug, Diagnostic, Clone)]
8pub enum ParseError {
9    #[error("unexpected token: found `{found}`, expected {expected}")]
10    UnexpectedToken {
11        found: String,
12        expected: String,
13        #[label("here")]
14        span: miette::SourceSpan,
15    },
16
17    #[error("unexpected end of input, expected {expected}")]
18    UnexpectedEof {
19        expected: String,
20        #[label("here")]
21        span: miette::SourceSpan,
22    },
23
24    #[error("{message}")]
25    Custom {
26        message: String,
27        #[label("{message}")]
28        span: miette::SourceSpan,
29    },
30
31    #[error("invalid token")]
32    InvalidToken {
33        #[label("invalid token")]
34        span: miette::SourceSpan,
35    },
36}
37
38impl ParseError {
39    #[must_use]
40    pub fn unexpected_token(found: &str, expected: &str, span: Span) -> Self {
41        Self::UnexpectedToken {
42            found: found.to_string(),
43            expected: expected.to_string(),
44            span: (span.start, span.len()).into(),
45        }
46    }
47
48    #[must_use]
49    pub fn unexpected_eof(expected: &str, pos: usize) -> Self {
50        Self::UnexpectedEof {
51            expected: expected.to_string(),
52            span: (pos, 0).into(),
53        }
54    }
55
56    #[must_use]
57    pub fn custom(message: &str, span: Span) -> Self {
58        Self::Custom {
59            message: message.to_string(),
60            span: (span.start, span.len()).into(),
61        }
62    }
63}
64
65/// Result type alias for parser operations.
66pub type ParseResult<T> = Result<T, ParseError>;
openscad_rs/error.rs

openscad_rs/
error.rs
