data_transform/
error.rs

1use thiserror::Error;
2
3#[derive(Error, Debug)]
4pub enum DtransformError {
5    #[error("Parse error: {0}")]
6    ParseError(String),
7
8    #[error("Column not found: {0}")]
9    ColumnNotFound(String),
10
11    #[error("Type mismatch: expected {expected}, got {got}")]
12    TypeMismatch { expected: String, got: String },
13
14    #[error("I/O error: {0}")]
15    IoError(#[from] std::io::Error),
16
17    #[error("Polars error: {0}")]
18    PolarsError(#[from] polars::error::PolarsError),
19
20    #[error("Invalid operation: {0}")]
21    InvalidOperation(String),
22
23    #[error("Variable not found: {0}")]
24    VariableNotFound(String),
25
26    #[error("Regex error: {0}")]
27    RegexError(#[from] regex::Error),
28
29    #[error("Pest parse error: {0}")]
30    PestError(String),
31
32    #[error("Readline error: {0}")]
33    ReadlineError(String),
34}
35
36pub type Result<T> = std::result::Result<T, DtransformError>;
37
38impl DtransformError {
39    pub fn display_friendly(&self) -> String {
40        match self {
41            DtransformError::ColumnNotFound(col) => {
42                format!(
43                    "Column '{}' not found.\nUse .schema to see all columns.",
44                    col
45                )
46            }
47            DtransformError::ParseError(msg) => {
48                format!("Syntax error: {}\nSee examples with .help", msg)
49            }
50            DtransformError::VariableNotFound(var) => {
51                format!(
52                    "Variable '{}' not found.\nUse .vars to see all variables.",
53                    var
54                )
55            }
56            _ => self.to_string(),
57        }
58    }
59}
data_transform/error.rs

data_transform/
error.rs
