limbo_sqlite3_parser/lexer/sql/
error.rs

1use std::error;
2use std::fmt;
3use std::io;
4
5use crate::lexer::scan::ScanError;
6use crate::parser::ParserError;
7
8/// SQL lexer and parser errors
9#[non_exhaustive]
10#[derive(Debug, miette::Diagnostic)]
11#[diagnostic()]
12pub enum Error {
13    /// I/O Error
14    Io(io::Error),
15    /// Lexer error
16    UnrecognizedToken(
17        Option<(u64, usize)>,
18        #[label("here")] Option<miette::SourceSpan>,
19    ),
20    /// Missing quote or double-quote or backtick
21    UnterminatedLiteral(
22        Option<(u64, usize)>,
23        #[label("here")] Option<miette::SourceSpan>,
24    ),
25    /// Missing `]`
26    UnterminatedBracket(
27        Option<(u64, usize)>,
28        #[label("here")] Option<miette::SourceSpan>,
29    ),
30    /// Missing `*/`
31    UnterminatedBlockComment(
32        Option<(u64, usize)>,
33        #[label("here")] Option<miette::SourceSpan>,
34    ),
35    /// Invalid parameter name
36    BadVariableName(
37        Option<(u64, usize)>,
38        #[label("here")] Option<miette::SourceSpan>,
39    ),
40    /// Invalid number format
41    #[diagnostic(help("Invalid digit in `{3}`"))]
42    BadNumber(
43        Option<(u64, usize)>,
44        #[label("here")] Option<miette::SourceSpan>,
45        Option<usize>,
46        String, // Holds the offending number as a string
47    ),
48    /// Invalid or missing sign after `!`
49    ExpectedEqualsSign(
50        Option<(u64, usize)>,
51        #[label("here")] Option<miette::SourceSpan>,
52    ),
53    /// BLOB literals are string literals containing hexadecimal data and preceded by a single "x" or "X" character.
54    MalformedBlobLiteral(
55        Option<(u64, usize)>,
56        #[label("here")] Option<miette::SourceSpan>,
57    ),
58    /// Hexadecimal integer literals follow the C-language notation of "0x" or "0X" followed by hexadecimal digits.
59    MalformedHexInteger(
60        Option<(u64, usize)>,
61        #[label("here")] Option<miette::SourceSpan>,
62        Option<usize>,
63        #[help] Option<&'static str>,
64    ),
65    /// Grammar error
66    ParserError(
67        ParserError,
68        Option<(u64, usize)>,
69        #[label("syntax error")] Option<miette::SourceSpan>,
70    ),
71}
72
73impl fmt::Display for Error {
74    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
75        match *self {
76            Self::Io(ref err) => err.fmt(f),
77            Self::UnrecognizedToken(pos, _) => {
78                write!(f, "unrecognized token at {:?}", pos.unwrap())
79            }
80            Self::UnterminatedLiteral(pos, _) => {
81                write!(f, "non-terminated literal at {:?}", pos.unwrap())
82            }
83            Self::UnterminatedBracket(pos, _) => {
84                write!(f, "non-terminated bracket at {:?}", pos.unwrap())
85            }
86            Self::UnterminatedBlockComment(pos, _) => {
87                write!(f, "non-terminated block comment at {:?}", pos.unwrap())
88            }
89            Self::BadVariableName(pos, _) => write!(f, "bad variable name at {:?}", pos.unwrap()),
90            Self::BadNumber(pos, _, _, _) => write!(f, "bad number at {:?}", pos.unwrap()),
91            Self::ExpectedEqualsSign(pos, _) => write!(f, "expected = sign at {:?}", pos.unwrap()),
92            Self::MalformedBlobLiteral(pos, _) => {
93                write!(f, "malformed blob literal at {:?}", pos.unwrap())
94            }
95            Self::MalformedHexInteger(pos, _, _, _) => {
96                write!(f, "malformed hex integer at {:?}", pos.unwrap())
97            }
98            Self::ParserError(ref msg, Some(pos), _) => write!(f, "{msg} at {pos:?}"),
99            Self::ParserError(ref msg, _, _) => write!(f, "{msg}"),
100        }
101    }
102}
103
104impl error::Error for Error {}
105
106impl From<io::Error> for Error {
107    fn from(err: io::Error) -> Self {
108        Self::Io(err)
109    }
110}
111
112impl From<ParserError> for Error {
113    fn from(err: ParserError) -> Self {
114        Self::ParserError(err, None, None)
115    }
116}
117
118impl ScanError for Error {
119    fn position(&mut self, line: u64, column: usize, offset: usize) {
120        match *self {
121            Self::Io(_) => {}
122            Self::UnrecognizedToken(ref mut pos, ref mut src) => {
123                *pos = Some((line, column));
124                *src = Some((offset).into());
125            }
126            Self::UnterminatedLiteral(ref mut pos, ref mut src) => {
127                *pos = Some((line, column));
128                *src = Some((offset).into());
129            }
130            Self::UnterminatedBracket(ref mut pos, ref mut src) => {
131                *pos = Some((line, column));
132                *src = Some((offset).into());
133            }
134            Self::UnterminatedBlockComment(ref mut pos, ref mut src) => {
135                *pos = Some((line, column));
136                *src = Some((offset).into());
137            }
138            Self::BadVariableName(ref mut pos, ref mut src) => {
139                *pos = Some((line, column));
140                *src = Some((offset).into());
141            }
142            Self::ExpectedEqualsSign(ref mut pos, ref mut src) => {
143                *pos = Some((line, column));
144                *src = Some((offset).into());
145            }
146            Self::MalformedBlobLiteral(ref mut pos, ref mut src) => {
147                *pos = Some((line, column));
148                *src = Some((offset).into());
149            }
150            // Exact same handling here
151            Self::MalformedHexInteger(ref mut pos, ref mut src, len, _)
152            | Self::BadNumber(ref mut pos, ref mut src, len, _) => {
153                *pos = Some((line, column));
154                *src = Some((offset, len.unwrap_or(0)).into());
155            }
156            Self::ParserError(_, ref mut pos, _) => *pos = Some((line, column)),
157        }
158    }
159}
limbo_sqlite3_parser/lexer/sql/error.rs

limbo_sqlite3_parser/lexer/sql/
error.rs
