42 lines
955 B
Rust
42 lines
955 B
Rust
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use std::fmt::{Debug, Display, Formatter, Error};
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use crate::tokens::MpsToken;
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use super::MpsOp;
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#[derive(Debug)]
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pub struct SyntaxError {
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pub line: usize,
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pub token: MpsToken,
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}
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impl Display for SyntaxError {
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fn fmt(&self, f: &mut Formatter) -> Result<(), Error> {
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write!(f, "SyntaxError (line {}): Unexpected {}", &self.line, &self.token)
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}
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}
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impl MpsLanguageError for SyntaxError {
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fn set_line(&mut self, line: usize) {self.line = line}
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}
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#[derive(Debug)]
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pub struct RuntimeError {
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pub line: usize,
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pub op: Box<dyn MpsOp>,
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pub msg: String,
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}
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impl Display for RuntimeError {
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fn fmt(&self, f: &mut Formatter) -> Result<(), Error> {
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write!(f, "{} (line {}): {}", &self.msg, &self.line, &self.op)
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}
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}
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impl MpsLanguageError for RuntimeError {
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fn set_line(&mut self, line: usize) {self.line = line}
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}
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pub trait MpsLanguageError: Display + Debug {
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fn set_line(&mut self, line: usize);
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}
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