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use std::error;
use std::io;
use termcolor::{ColorSpec, WriteColor};
use crate::prelude::*;
pub fn format_repl_trace_into<W, E>(mut error: W, interp: &mut Artichoke, exc: &E) -> Result<(), Box<dyn error::Error>>
where
W: io::Write + WriteColor,
E: RubyException,
{
error.reset()?;
if let Some(backtrace) = exc.vm_backtrace(interp) {
error.set_color(ColorSpec::new().set_bold(true))?;
write!(error, "Traceback")?;
error.reset()?;
writeln!(error, " (most recent call last):")?;
for (num, frame) in backtrace.into_iter().enumerate().rev() {
write!(error, "\t{}: from ", num + 1)?;
error.write_all(frame.as_slice())?;
writeln!(error)?;
}
}
error.set_color(ColorSpec::new().set_bold(true))?;
write!(error, "{} (", exc.name())?;
error.set_color(ColorSpec::new().set_bold(true).set_underline(true))?;
error.write_all(&exc.message())?;
error.set_color(ColorSpec::new().set_bold(true))?;
writeln!(error, ")")?;
error.reset()?;
Ok(())
}
pub fn format_cli_trace_into<W, E>(mut error: W, interp: &mut Artichoke, exc: &E) -> Result<(), Box<dyn error::Error>>
where
W: io::Write + WriteColor,
E: RubyException,
{
error.reset()?;
let mut top = None;
if let Some(backtrace) = exc.vm_backtrace(interp) {
error.set_color(ColorSpec::new().set_bold(true))?;
write!(error, "Traceback")?;
error.reset()?;
writeln!(error, " (most recent call last):")?;
let mut iter = backtrace.into_iter().enumerate();
top = iter.next();
for (num, frame) in iter.rev() {
write!(error, "\t{}: from ", num + 1)?;
error.write_all(frame.as_slice())?;
writeln!(error)?;
}
}
if let Some((_, frame)) = top {
error.write_all(frame.as_slice())?;
write!(error, ": ")?;
}
error.set_color(ColorSpec::new().set_bold(true))?;
error.write_all(&exc.message())?;
error.set_color(ColorSpec::new().set_bold(true))?;
write!(error, " (")?;
error.set_color(ColorSpec::new().set_bold(true).set_underline(true))?;
write!(error, "{}", exc.name())?;
error.set_color(ColorSpec::new().set_bold(true))?;
writeln!(error, ")")?;
error.reset()?;
Ok(())
}