alopex_sql/
error.rs

1use std::fmt;
2
3/// Parser errors for the Alopex SQL dialect.
4#[derive(Debug, Clone, PartialEq, Eq)]
5pub enum ParserError {
6    /// ALOPEX-P001: An unexpected token was encountered.
7    UnexpectedToken {
8        line: u64,
9        column: u64,
10        expected: String,
11        found: String,
12    },
13
14    /// ALOPEX-P002: A required token was missing.
15    ExpectedToken {
16        line: u64,
17        column: u64,
18        expected: String,
19        found: String,
20    },
21
22    /// ALOPEX-P003: String literal was not closed.
23    UnterminatedString { line: u64, column: u64 },
24
25    /// ALOPEX-P004: Number literal is malformed.
26    InvalidNumber {
27        line: u64,
28        column: u64,
29        value: String,
30    },
31
32    /// ALOPEX-P005: Vector literal is malformed.
33    InvalidVector { line: u64, column: u64 },
34
35    /// ALOPEX-P006: Parser exceeded maximum recursion depth.
36    RecursionLimitExceeded { depth: usize },
37}
38
39impl fmt::Display for ParserError {
40    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
41        match self {
42            Self::UnexpectedToken {
43                line,
44                column,
45                expected,
46                found,
47            } => write!(
48                f,
49                "error[ALOPEX-P001]: unexpected token at line {line}, column {column}: expected {expected}, found {found}"
50            ),
51            Self::ExpectedToken {
52                line,
53                column,
54                expected,
55                found,
56            } => write!(
57                f,
58                "error[ALOPEX-P002]: expected {expected} but found {found} at line {line}, column {column}"
59            ),
60            Self::UnterminatedString { line, column } => write!(
61                f,
62                "error[ALOPEX-P003]: unterminated string literal starting at line {line}, column {column}"
63            ),
64            Self::InvalidNumber {
65                line,
66                column,
67                value,
68            } => write!(
69                f,
70                "error[ALOPEX-P004]: invalid number literal '{value}' at line {line}, column {column}"
71            ),
72            Self::InvalidVector { line, column } => write!(
73                f,
74                "error[ALOPEX-P005]: invalid vector literal at line {line}, column {column}"
75            ),
76            Self::RecursionLimitExceeded { depth } => write!(
77                f,
78                "error[ALOPEX-P006]: recursion limit exceeded (depth: {depth})"
79            ),
80        }
81    }
82}
83
84impl std::error::Error for ParserError {}
85
86/// Convenience result type for parser operations.
87pub type Result<T> = std::result::Result<T, ParserError>;
alopex_sql/error.rs

alopex_sql/
error.rs
