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|
use std::fmt::Write;
use crate::{
graphics::{Color, Modifier, Style},
Document, Editor, Theme, View,
};
pub type GutterFn<'doc> = Box<dyn Fn(usize, bool, &mut String) -> Option<Style> + 'doc>;
pub type Gutter =
for<'doc> fn(&'doc Editor, &'doc Document, &View, &Theme, bool, usize) -> GutterFn<'doc>;
pub fn diagnostic<'doc>(
_editor: &'doc Editor,
doc: &'doc Document,
_view: &View,
theme: &Theme,
_is_focused: bool,
_width: usize,
) -> GutterFn<'doc> {
let warning = theme.get("warning");
let error = theme.get("error");
let info = theme.get("info");
let hint = theme.get("hint");
let diagnostics = doc.diagnostics();
Box::new(move |line: usize, _selected: bool, out: &mut String| {
use helix_core::diagnostic::Severity;
if let Ok(index) = diagnostics.binary_search_by_key(&line, |d| d.line) {
let after = diagnostics[index..].iter().take_while(|d| d.line == line);
let before = diagnostics[..index]
.iter()
.rev()
.take_while(|d| d.line == line);
let diagnostics_on_line = after.chain(before);
// This unwrap is safe because the iterator cannot be empty as it contains at least the item found by the binary search.
let diagnostic = diagnostics_on_line.max_by_key(|d| d.severity).unwrap();
write!(out, "●").unwrap();
return Some(match diagnostic.severity {
Some(Severity::Error) => error,
Some(Severity::Warning) | None => warning,
Some(Severity::Info) => info,
Some(Severity::Hint) => hint,
});
}
None
})
}
pub fn line_numbers<'doc>(
editor: &'doc Editor,
doc: &'doc Document,
view: &View,
theme: &Theme,
is_focused: bool,
width: usize,
) -> GutterFn<'doc> {
let text = doc.text().slice(..);
let last_line = view.last_line(doc);
// Whether to draw the line number for the last line of the
// document or not. We only draw it if it's not an empty line.
let draw_last = text.line_to_byte(last_line) < text.len_bytes();
let linenr = theme.get("ui.linenr");
let linenr_select = theme.get("ui.linenr.selected");
let current_line = doc
.text()
.char_to_line(doc.selection(view.id).primary().cursor(text));
let line_number = editor.config().line_number;
let mode = doc.mode;
Box::new(move |line: usize, selected: bool, out: &mut String| {
if line == last_line && !draw_last {
write!(out, "{:>1$}", '~', width).unwrap();
Some(linenr)
} else {
use crate::{document::Mode, editor::LineNumber};
let relative = line_number == LineNumber::Relative
&& mode != Mode::Insert
&& is_focused
&& current_line != line;
let display_num = if relative {
abs_diff(current_line, line)
} else {
line + 1
};
let style = if selected && is_focused {
linenr_select
} else {
linenr
};
write!(out, "{:>1$}", display_num, width).unwrap();
Some(style)
}
})
}
pub fn padding<'doc>(
_editor: &'doc Editor,
_doc: &'doc Document,
_view: &View,
_theme: &Theme,
_is_focused: bool,
_width: usize,
) -> GutterFn<'doc> {
Box::new(|_line: usize, _selected: bool, _out: &mut String| None)
}
#[inline(always)]
const fn abs_diff(a: usize, b: usize) -> usize {
if a > b {
a - b
} else {
b - a
}
}
pub fn breakpoints<'doc>(
editor: &'doc Editor,
doc: &'doc Document,
_view: &View,
theme: &Theme,
_is_focused: bool,
_width: usize,
) -> GutterFn<'doc> {
let warning = theme.get("warning");
let error = theme.get("error");
let info = theme.get("info");
let breakpoints = doc.path().and_then(|path| editor.breakpoints.get(path));
let breakpoints = match breakpoints {
Some(breakpoints) => breakpoints,
None => return Box::new(move |_, _, _| None),
};
Box::new(move |line: usize, _selected: bool, out: &mut String| {
let breakpoint = breakpoints
.iter()
.find(|breakpoint| breakpoint.line == line)?;
let mut style = if breakpoint.condition.is_some() && breakpoint.log_message.is_some() {
error.add_modifier(Modifier::UNDERLINED)
} else if breakpoint.condition.is_some() {
error
} else if breakpoint.log_message.is_some() {
info
} else {
warning
};
if !breakpoint.verified {
// Faded colors
style = if let Some(Color::Rgb(r, g, b)) = style.fg {
style.fg(Color::Rgb(
((r as f32) * 0.4).floor() as u8,
((g as f32) * 0.4).floor() as u8,
((b as f32) * 0.4).floor() as u8,
))
} else {
style.fg(Color::Gray)
}
};
let sym = if breakpoint.verified { "▲" } else { "⊚" };
write!(out, "{}", sym).unwrap();
Some(style)
})
}
pub fn diagnostics_or_breakpoints<'doc>(
editor: &'doc Editor,
doc: &'doc Document,
view: &View,
theme: &Theme,
is_focused: bool,
width: usize,
) -> GutterFn<'doc> {
let diagnostics = diagnostic(editor, doc, view, theme, is_focused, width);
let breakpoints = breakpoints(editor, doc, view, theme, is_focused, width);
Box::new(move |line, selected, out| {
breakpoints(line, selected, out).or_else(|| diagnostics(line, selected, out))
})
}
|
