57 lines
1.3 KiB
Rust
57 lines
1.3 KiB
Rust
use std::fmt::{Debug, Display, Error, Formatter};
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use super::PseudoOp;
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use crate::tokens::MpsToken;
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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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pub got: Option<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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match &self.got {
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Some(t) => write!(
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f,
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"SyntaxError (line {}): Expected {}, got {}",
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&self.line, &self.token, t
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),
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None => write!(
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f,
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"SyntaxError (line {}): Expected {}, got nothing",
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&self.line, &self.token
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),
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}
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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) {
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self.line = line
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}
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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: PseudoOp,
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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) {
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self.line = line
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}
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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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