parser/
error.rs

1//! Error types for the parser. Generated by CongoCC Parser Generator. Do not edit.
2
3use std::fmt;
4
5/// Result type for parsing operations
6pub type ParseResult<T> = Result<T, ParseError>;
7
8/// Error type for parsing failures
9#[derive(Debug, Clone)]
10#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
11pub struct ParseError {
12    /// Error message describing what went wrong
13    pub message: String,
14    /// Position in the input where the error occurred
15    pub position: Option<usize>,
16    /// Line number where the error occurred (if available)
17    pub line: Option<usize>,
18    /// Column number where the error occurred (if available)
19    pub column: Option<usize>,
20}
21
22impl ParseError {
23    /// Create a new parse error with just a message
24    pub fn new(message: impl Into<String>) -> Self {
25        ParseError {
26            message: message.into(),
27            position: None,
28            line: None,
29            column: None,
30        }
31    }
32
33    /// Create a parse error with position information
34    pub fn at_position(message: impl Into<String>, position: usize) -> Self {
35        ParseError {
36            message: message.into(),
37            position: Some(position),
38            line: None,
39            column: None,
40        }
41    }
42
43    /// Create a parse error with line and column information
44    pub fn at_location(message: impl Into<String>, line: usize, column: usize) -> Self {
45        ParseError {
46            message: message.into(),
47            position: None,
48            line: Some(line),
49            column: Some(column),
50        }
51    }
52
53    /// Add position information to an existing error
54    pub fn with_position(mut self, position: usize) -> Self {
55        self.position = Some(position);
56        self
57    }
58
59    /// Add line/column information to an existing error
60    pub fn with_location(mut self, line: usize, column: usize) -> Self {
61        self.line = Some(line);
62        self.column = Some(column);
63        self
64    }
65}
66
67impl fmt::Display for ParseError {
68    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
69        if let (Some(line), Some(column)) = (self.line, self.column) {
70            write!(f, "Parse error at line {}, column {}: {}", line, column, self.message)
71        } else if let Some(position) = self.position {
72            write!(f, "Parse error at position {}: {}", position, self.message)
73        } else {
74            write!(f, "Parse error: {}", self.message)
75        }
76    }
77}
78
79impl std::error::Error for ParseError {}
parser/error.rs

parser/
error.rs
