xshade_parser/error/
mod.rs

1use ::std::convert::From;
2use ::std::error::Error;
3use ::std::fmt;
4use ::ast::Span;
5
6pub type ParseResult<T> = Result<T, ParseError>;
7
8#[derive(Debug, Copy, Clone, Serialize, Deserialize)]
9pub enum ParseErrorKind {
10    Unknown = 0,
11    UnrecognizedCharacter = 1,
12    InvalidTopLevelItem = 1000,
13    InvalidStructName = 2000,
14    InvalidFunctionName = 3000,
15    MissingArgumentList = 3001,
16    MissingOpenCurlyBraces = 5000,
17    MissingClosingCurlyBraces = 5001,
18    MissingError = 999999,
19}
20
21impl From<u32> for ParseErrorKind {
22    fn from(value: u32) -> Self {
23        match value {
24            1 => ParseErrorKind::UnrecognizedCharacter,
25            1000 => ParseErrorKind::InvalidTopLevelItem,
26            2000 => ParseErrorKind::InvalidStructName,
27            3000 => ParseErrorKind::InvalidFunctionName,
28            3001 => ParseErrorKind::MissingArgumentList,
29            5000 => ParseErrorKind::MissingOpenCurlyBraces,
30            5001 => ParseErrorKind::MissingClosingCurlyBraces,
31            999999 => ParseErrorKind::MissingError,
32
33            _ => ParseErrorKind::Unknown,
34        }
35    }
36}
37
38#[derive(Debug, Serialize, Deserialize)]
39pub struct ParseError {
40    span: Span,
41    kind: ParseErrorKind,
42}
43
44impl ParseError {
45    pub fn new(span: Span, kind: ParseErrorKind) -> ParseError {
46        ParseError {
47            span,
48            kind,
49        }
50    }
51}
52
53impl Error for ParseError {
54    fn description(&self) -> &str {
55        "ParseError"
56    }
57
58    fn cause(&self) -> Option<&Error> {
59        None
60    }
61}
62
63impl fmt::Display for ParseError {
64    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
65        match self.kind {
66            ParseErrorKind::Unknown => write!(f, "ParseError: Unknown error at {}.", self.span),
67            ParseErrorKind::UnrecognizedCharacter => write!(f, "ParseError: Unrecognized character at {}.", self.span),
68            ParseErrorKind::InvalidTopLevelItem => write!(f, "ParseError: Invalid top level item at {}.", self.span),
69            ParseErrorKind::MissingOpenCurlyBraces => write!(f, "ParseError: Missing opening curly braces at {}.", self.span),
70            ParseErrorKind::MissingClosingCurlyBraces => write!(f, "ParseError: Missing closing curly braces at {}.", self.span),
71            ParseErrorKind::InvalidStructName => write!(f, "ParseError: Invalid struct name at {}.", self.span),
72            ParseErrorKind::InvalidFunctionName => write!(f, "ParseError: Invalid function name at {}.", self.span),
73            ParseErrorKind::MissingArgumentList => write!(f, "ParseError: Missing argument list at {}.", self.span),
74            ParseErrorKind::MissingError => write!(f, "ParseError: A custom error is missing in a nom parser."),
75        }
76    }
77}
xshade_parser/error/mod.rs

xshade_parser/error/
mod.rs
