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use std::fmt::{Display, Write};
use owo_colors::OwoColorize;
use turbo_tasks_fs::source_context::{SourceContextLine, SourceContextLines};
struct MarkerRange {
start: char,
end: char,
pos: usize,
len: usize,
}
impl Display for MarkerRange {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
for _ in 0..self.pos {
f.write_char(' ')?;
}
f.write_char(self.start)?;
if self.len > 1 {
for _ in 2..self.len {
f.write_char('-')?;
}
f.write_char(self.end)?;
}
Ok(())
}
}
pub fn format_source_context_lines(ctx: &SourceContextLines, f: &mut impl Write) {
const PADDING: usize = 6;
const SPACE: char = ' ';
for line in &ctx.0 {
match line {
SourceContextLine::Context { line, outside } => {
writeln!(
f,
"{}",
format_args!("{line:>PADDING$} | {outside}").dimmed()
)
.unwrap();
}
SourceContextLine::Start {
line,
before,
inside,
} => {
writeln!(
f,
"{SPACE:PADDING$} | {}",
MarkerRange {
start: 'v',
end: '-',
pos: before.len(),
len: inside.len(),
}
.bold(),
)
.unwrap();
writeln!(f, "{line:>PADDING$} + {}{}", before.dimmed(), inside.bold()).unwrap();
}
SourceContextLine::End {
line,
inside,
after,
} => {
writeln!(f, "{line:>PADDING$} + {}{}", inside.bold(), after.dimmed()).unwrap();
writeln!(
f,
"{SPACE:PADDING$} +{}",
MarkerRange {
start: '-',
end: '^',
pos: 0,
len: inside.len() + 1,
}
.bold()
)
.unwrap();
}
SourceContextLine::StartAndEnd {
line,
before,
inside,
after,
} => {
writeln!(
f,
"{SPACE:PADDING$} + {}",
MarkerRange {
start: 'v',
end: 'v',
pos: before.len(),
len: inside.len(),
}
.bold()
)
.unwrap();
if inside.len() >= 2 {
writeln!(
f,
"{line:>PADDING$} + {}{}{}",
before.dimmed(),
inside.bold(),
after.dimmed()
)
.unwrap();
} else {
writeln!(
f,
"{line:>PADDING$} + {}{}{}",
before.bold(),
inside.bold(),
after.bold()
)
.unwrap();
}
writeln!(
f,
"{SPACE:PADDING$} + {}",
MarkerRange {
start: '^',
end: '^',
pos: before.len(),
len: inside.len(),
}
.bold()
)
.unwrap();
}
SourceContextLine::Inside { line, inside } => {
writeln!(f, "{:>PADDING$} + {}", line.bold(), inside.bold()).unwrap();
}
}
}
}
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