sentience_tokenize/
error.rs

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

sentience_tokenize/
error.rs
