r7rs_parser/parser/
syntax_error.rs

1use std::fmt;
2
3#[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Debug)]
4pub enum SyntaxError {
5    Empty,
6    ClosingParenthesisMissing,
7    UnexpectedClosingParenthesis,
8    UnexpectedDot,
9    NotAByteValue,
10    SyntaxNotYetSupported
11}
12
13impl fmt::Display for SyntaxError {
14    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
15        use SyntaxError::*;
16        f.write_str(match self {
17            Empty => "empty input",
18            ClosingParenthesisMissing => "closing parenthesis missing",
19            UnexpectedClosingParenthesis => "unexpected closing parenthesis",
20            UnexpectedDot => "unexpected dot",
21            NotAByteValue => "not a byte value",
22            SyntaxNotYetSupported => "syntax not yet supported"
23        })
24    }
25}
26
27impl std::error::Error for SyntaxError {}

r7rs_parser/parser/syntax_error.rs

r7rs_parser/parser/
syntax_error.rs