43 lines
1.1 KiB
Rust
43 lines
1.1 KiB
Rust
|
use std::fmt;
|
||
|
|
|
||
|
|
use crate::TextRange;
|
||
|
|
|
||
|
|
#[derive(Debug, Clone, PartialEq, Eq, Hash)]
|
||
|
|
pub struct SyntaxError {
|
||
|
|
pub kind: SyntaxErrorKind,
|
||
|
|
pub range: TextRange,
|
||
|
|
}
|
||
|
|
|
||
|
|
impl SyntaxError {
|
||
|
|
pub fn new(kind: SyntaxErrorKind, range: TextRange) -> SyntaxError {
|
||
|
|
SyntaxError { kind, range }
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
#[derive(Debug, Clone, PartialEq, Eq, Hash)]
|
||
|
|
pub enum SyntaxErrorKind {
|
||
|
|
ParseError(ParseError),
|
||
|
|
EmptyChar,
|
||
|
|
UnclosedChar,
|
||
|
|
LongChar,
|
||
|
|
EmptyAsciiEscape,
|
||
|
|
InvalidAsciiEscape,
|
||
|
|
}
|
||
|
|
|
||
|
|
#[derive(Debug, Clone, PartialEq, Eq, Hash)]
|
||
|
|
pub struct ParseError(pub String);
|
||
|
|
|
||
|
|
impl fmt::Display for SyntaxErrorKind {
|
||
|
|
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
|
||
|
|
use self::SyntaxErrorKind::*;
|
||
|
|
match self {
|
||
|
|
EmptyAsciiEscape => write!(f, "Empty escape sequence"),
|
||
|
|
InvalidAsciiEscape => write!(f, "Invalid escape sequence"),
|
||
|
|
EmptyChar => write!(f, "Empty char literal"),
|
||
|
|
UnclosedChar => write!(f, "Unclosed char literal"),
|
||
|
|
LongChar => write!(f, "Char literal should be one character long"),
|
||
|
|
ParseError(msg) => write!(f, "{}", msg.0),
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|