51 lines
1.2 KiB
Rust
51 lines
1.2 KiB
Rust
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use std::{io, result};
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use thiserror::Error;
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use crate::{codegen, interpreter, parser};
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#[derive(Error, Debug)]
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pub enum Error {
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#[error(transparent)]
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IOError(#[from] io::Error),
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#[error("Error parsing input: {0}")]
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ParseError(#[from] parser::Error),
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#[error("Error evaluating expression: {0}")]
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EvalError(#[from] interpreter::Error),
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#[error("Compile error: {0}")]
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CodegenError(#[from] codegen::Error),
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#[error("{0}")]
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Message(String),
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}
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impl From<String> for Error {
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fn from(s: String) -> Self {
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Self::Message(s)
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}
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}
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impl<'a> From<nom::Err<nom::error::Error<&'a str>>> for Error {
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fn from(e: nom::Err<nom::error::Error<&'a str>>) -> Self {
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use nom::error::Error as NomError;
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use nom::Err::*;
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Self::ParseError(match e {
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Incomplete(i) => Incomplete(i),
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Error(NomError { input, code }) => Error(NomError {
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input: input.to_owned(),
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code,
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}),
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Failure(NomError { input, code }) => Failure(NomError {
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input: input.to_owned(),
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code,
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}),
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})
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}
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}
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pub type Result<T> = result::Result<T, Error>;
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