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use scolapasta_string_escape::format_debug_escape_into;
use std::borrow::{Borrow, BorrowMut, Cow};
use std::error;
use std::fmt;
use crate::class_registry::ClassRegistry;
use crate::core::ConvertMut;
use crate::error::{Error, RubyException};
use crate::extn::core::exception::Fatal;
use crate::sys;
use crate::Artichoke;
#[inline]
pub fn format_unicode_debug_into<W>(dest: W, string: &[u8]) -> Result<(), WriteError>
where
W: fmt::Write,
{
format_debug_escape_into(dest, string).map_err(WriteError)
}
#[derive(Debug, Clone, Copy)]
pub struct WriteError(fmt::Error);
impl From<fmt::Error> for WriteError {
fn from(err: fmt::Error) -> Self {
Self(err)
}
}
impl From<WriteError> for fmt::Error {
fn from(err: WriteError) -> Self {
err.into_inner()
}
}
impl WriteError {
#[inline]
#[must_use]
pub fn into_inner(self) -> fmt::Error {
self.0
}
}
impl AsRef<fmt::Error> for WriteError {
fn as_ref(&self) -> &fmt::Error {
&self.0
}
}
impl AsMut<fmt::Error> for WriteError {
fn as_mut(&mut self) -> &mut fmt::Error {
&mut self.0
}
}
impl Borrow<fmt::Error> for WriteError {
fn borrow(&self) -> &fmt::Error {
&self.0
}
}
impl BorrowMut<fmt::Error> for WriteError {
fn borrow_mut(&mut self) -> &mut fmt::Error {
&mut self.0
}
}
impl fmt::Display for WriteError {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
f.write_str("Unable to write message into destination")
}
}
impl error::Error for WriteError {
#[inline]
fn source(&self) -> Option<&(dyn error::Error + 'static)> {
Some(&self.0)
}
}
impl RubyException for WriteError {
#[inline]
fn message(&self) -> Cow<'_, [u8]> {
Cow::Borrowed(b"Unable to write message into destination")
}
#[inline]
fn name(&self) -> Cow<'_, str> {
"fatal".into()
}
fn vm_backtrace(&self, interp: &mut Artichoke) -> Option<Vec<Vec<u8>>> {
let _ = interp;
None
}
fn as_mrb_value(&self, interp: &mut Artichoke) -> Option<sys::mrb_value> {
let message = interp.convert_mut(self.message());
let value = interp.new_instance::<Fatal>(&[message]).ok().flatten()?;
Some(value.inner())
}
}
impl From<WriteError> for Error {
#[inline]
fn from(exception: WriteError) -> Self {
Self::from(Box::<dyn RubyException>::from(exception))
}
}
impl From<Box<WriteError>> for Error {
#[inline]
fn from(exception: Box<WriteError>) -> Self {
Self::from(Box::<dyn RubyException>::from(exception))
}
}
impl From<WriteError> for Box<dyn RubyException> {
#[inline]
fn from(exception: WriteError) -> Box<dyn RubyException> {
Box::new(exception)
}
}
impl From<Box<WriteError>> for Box<dyn RubyException> {
#[inline]
fn from(exception: Box<WriteError>) -> Box<dyn RubyException> {
exception
}
}
#[cfg(test)]
mod tests {
use super::format_unicode_debug_into;
#[test]
fn invalid_utf8() {
let mut buf = String::new();
format_unicode_debug_into(&mut buf, &b"abc\xFF"[..]).unwrap();
assert_eq!(r"abc\xFF", buf.as_str());
}
#[test]
fn ascii() {
let mut buf = String::new();
format_unicode_debug_into(&mut buf, &b"abc"[..]).unwrap();
assert_eq!(r"abc", buf.as_str());
}
#[test]
fn emoji() {
let mut buf = String::new();
format_unicode_debug_into(&mut buf, "Ruby 💎".as_bytes()).unwrap();
assert_eq!(r"Ruby 💎", buf.as_str());
}
#[test]
fn escaped() {
let mut buf = String::new();
format_unicode_debug_into(&mut buf, b"\n").unwrap();
assert_eq!(r"\n", buf.as_str());
}
}