55 lines
1.2 KiB
Rust
55 lines
1.2 KiB
Rust
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use std::{rc::Rc, error::Error, fmt};
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pub mod token;
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pub mod expr;
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pub mod lexer;
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pub mod parser;
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pub mod value;
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pub mod eval;
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pub mod interpreter;
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#[derive(Clone, Debug)]
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pub struct Position {
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pub pos: usize,
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pub line: usize,
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pub col: usize,
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pub file: Option<Rc<str>>
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}
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#[derive(Debug)]
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pub struct ParserError {
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pub message: String,
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pub pos: Position
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}
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#[derive(Debug)]
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pub struct RuntimeError {
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pub message: String,
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pub pos: Position
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}
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impl fmt::Display for ParserError {
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fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
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write!(f, "Error: {}\n In {} at {},{}",
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self.message,
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self.pos.file.as_ref().map(|o| o.as_ref()).unwrap_or("<unknown>"),
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self.pos.line,
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self.pos.col
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)
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}
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}
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impl fmt::Display for RuntimeError {
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fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
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write!(f, "Error: {}\n In {} at {},{}",
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self.message,
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self.pos.file.as_ref().map(|o| o.as_ref()).unwrap_or("<unknown>"),
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self.pos.line,
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self.pos.col
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)
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}
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}
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impl Error for ParserError {}
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impl Error for RuntimeError {}
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