sentience_tokenize/
error.rs

1use crate::Span;
2use std::fmt;
3
4#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
5#[derive(Debug, Clone, PartialEq, Eq)]
6pub enum LexErrorKind {
7    UnexpectedChar,
8    UnterminatedString,
9    UnterminatedEscape,
10    InvalidNumber,
11    InvalidEscape,
12}
13
14#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
15#[derive(Debug, Clone, PartialEq, Eq)]
16pub struct LexError {
17    pub kind: LexErrorKind,
18    pub span: Span,
19}
20
21impl LexError {
22    pub fn new(kind: LexErrorKind, span: Span) -> Self {
23        Self { kind, span }
24    }
25}
26
27impl LexErrorKind {
28    pub fn as_str(&self) -> &'static str {
29        match self {
30            LexErrorKind::UnexpectedChar => "unexpected character",
31            LexErrorKind::UnterminatedString => "unterminated string",
32            LexErrorKind::UnterminatedEscape => "unterminated escape",
33            LexErrorKind::InvalidNumber => "invalid number",
34            LexErrorKind::InvalidEscape => "invalid escape sequence",
35        }
36    }
37}
38
39impl fmt::Display for LexError {
40    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
41        let msg = match self.kind {
42            LexErrorKind::UnexpectedChar => "unexpected char",
43            LexErrorKind::UnterminatedString => "unterminated string",
44            LexErrorKind::UnterminatedEscape => "unterminated escape",
45            LexErrorKind::InvalidNumber => "invalid number",
46            LexErrorKind::InvalidEscape => "invalid escape",
47        };
48        write!(f, "{} at {}..{}", msg, self.span.start, self.span.end)
49    }
50}
51
52impl std::error::Error for LexError {}
sentience_tokenize/error.rs

sentience_tokenize/
error.rs
