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use std::io::Error as IOError;
use crate::semantics::resolve::ImportStack;
use crate::semantics::Hir;
use crate::syntax::{Import, ParseError};
mod builder;
pub(crate) use builder::*;
pub type Result<T> = std::result::Result<T, Error>;
#[derive(Debug)]
pub struct Error {
kind: ErrorKind,
}
#[derive(Debug)]
#[non_exhaustive]
pub(crate) enum ErrorKind {
IO(IOError),
Parse(ParseError),
Decode(DecodeError),
Encode(EncodeError),
Resolve(ImportError),
Typecheck(TypeError),
}
#[derive(Debug)]
pub(crate) enum ImportError {
UnexpectedImport(Import<Hir>),
ImportCycle(ImportStack, Import<Hir>),
}
#[derive(Debug)]
pub enum DecodeError {
CBORError(serde_cbor::error::Error),
WrongFormatError(String),
}
#[derive(Debug)]
pub enum EncodeError {
CBORError(serde_cbor::error::Error),
}
/// A structured type error
#[derive(Debug)]
pub struct TypeError {
message: TypeMessage,
}
/// The specific type error
#[derive(Debug)]
pub(crate) enum TypeMessage {
Custom(String),
}
impl Error {
pub(crate) fn new(kind: ErrorKind) -> Self {
Error { kind }
}
pub(crate) fn kind(&self) -> &ErrorKind {
&self.kind
}
}
impl TypeError {
pub(crate) fn new(message: TypeMessage) -> Self {
TypeError { message }
}
}
impl std::fmt::Display for TypeError {
fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
use TypeMessage::*;
let msg = match &self.message {
Custom(s) => format!("Type error: {}", s),
};
write!(f, "{}", msg)
}
}
impl std::error::Error for TypeError {}
impl std::fmt::Display for Error {
fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
match &self.kind {
ErrorKind::IO(err) => write!(f, "{}", err),
ErrorKind::Parse(err) => write!(f, "{}", err),
ErrorKind::Decode(err) => write!(f, "{:?}", err),
ErrorKind::Encode(err) => write!(f, "{:?}", err),
ErrorKind::Resolve(err) => write!(f, "{:?}", err),
ErrorKind::Typecheck(err) => write!(f, "{}", err),
}
}
}
impl std::error::Error for Error {}
impl From<ErrorKind> for Error {
fn from(kind: ErrorKind) -> Error {
Error::new(kind)
}
}
impl From<IOError> for Error {
fn from(err: IOError) -> Error {
ErrorKind::IO(err).into()
}
}
impl From<ParseError> for Error {
fn from(err: ParseError) -> Error {
ErrorKind::Parse(err).into()
}
}
impl From<DecodeError> for Error {
fn from(err: DecodeError) -> Error {
ErrorKind::Decode(err).into()
}
}
impl From<EncodeError> for Error {
fn from(err: EncodeError) -> Error {
ErrorKind::Encode(err).into()
}
}
impl From<ImportError> for Error {
fn from(err: ImportError) -> Error {
ErrorKind::Resolve(err).into()
}
}
impl From<TypeError> for Error {
fn from(err: TypeError) -> Error {
ErrorKind::Typecheck(err).into()
}
}
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