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//! Capabilities for Typst IDE support.
mod analyze;
mod complete;
mod jump;
mod tooltip;
pub use self::analyze::analyze_labels;
pub use self::complete::{autocomplete, Completion, CompletionKind};
pub use self::jump::{jump_from_click, jump_from_cursor, Jump};
pub use self::tooltip::{tooltip, Tooltip};
use std::fmt::Write;
use ecow::{eco_format, EcoString};
use typst::text::{FontInfo, FontStyle};
/// Extract the first sentence of plain text of a piece of documentation.
///
/// Removes Markdown formatting.
fn plain_docs_sentence(docs: &str) -> EcoString {
let mut s = unscanny::Scanner::new(docs);
let mut output = EcoString::new();
let mut link = false;
while let Some(c) = s.eat() {
match c {
'`' => {
let mut raw = s.eat_until('`');
if (raw.starts_with('{') && raw.ends_with('}'))
|| (raw.starts_with('[') && raw.ends_with(']'))
{
raw = &raw[1..raw.len() - 1];
}
s.eat();
output.push('`');
output.push_str(raw);
output.push('`');
}
'[' => link = true,
']' if link => {
if s.eat_if('(') {
s.eat_until(')');
s.eat();
} else if s.eat_if('[') {
s.eat_until(']');
s.eat();
}
link = false
}
'*' | '_' => {}
'.' => {
output.push('.');
break;
}
_ => output.push(c),
}
}
output
}
/// Create a short description of a font family.
fn summarize_font_family<'a>(variants: impl Iterator<Item = &'a FontInfo>) -> EcoString {
let mut infos: Vec<_> = variants.collect();
infos.sort_by_key(|info| info.variant);
let mut has_italic = false;
let mut min_weight = u16::MAX;
let mut max_weight = 0;
for info in &infos {
let weight = info.variant.weight.to_number();
has_italic |= info.variant.style == FontStyle::Italic;
min_weight = min_weight.min(weight);
max_weight = min_weight.max(weight);
}
let count = infos.len();
let mut detail = eco_format!("{count} variant{}.", if count == 1 { "" } else { "s" });
if min_weight == max_weight {
write!(detail, " Weight {min_weight}.").unwrap();
} else {
write!(detail, " Weights {min_weight}–{max_weight}.").unwrap();
}
if has_italic {
detail.push_str(" Has italics.");
}
detail
}
#[cfg(test)]
mod tests {
use comemo::Prehashed;
use once_cell::sync::Lazy;
use typst::diag::{FileError, FileResult};
use typst::foundations::{Bytes, Datetime};
use typst::syntax::{FileId, Source};
use typst::text::{Font, FontBook};
use typst::{Library, World};
/// A world for IDE testing.
pub struct TestWorld {
pub main: Source,
base: &'static TestBase,
}
impl TestWorld {
/// Create a new world for a single test.
///
/// This is cheap because the shared base for all test runs is lazily
/// initialized just once.
pub fn new(text: &str) -> Self {
static BASE: Lazy<TestBase> = Lazy::new(TestBase::default);
let main = Source::detached(text);
Self { main, base: &*BASE }
}
}
impl World for TestWorld {
fn library(&self) -> &Prehashed<Library> {
&self.base.library
}
fn book(&self) -> &Prehashed<FontBook> {
&self.base.book
}
fn main(&self) -> Source {
self.main.clone()
}
fn source(&self, id: FileId) -> FileResult<Source> {
if id == self.main.id() {
Ok(self.main.clone())
} else {
Err(FileError::NotFound(id.vpath().as_rootless_path().into()))
}
}
fn file(&self, id: FileId) -> FileResult<Bytes> {
Err(FileError::NotFound(id.vpath().as_rootless_path().into()))
}
fn font(&self, index: usize) -> Option<Font> {
Some(self.base.fonts[index].clone())
}
fn today(&self, _: Option<i64>) -> Option<Datetime> {
None
}
}
/// Shared foundation of all test worlds.
struct TestBase {
library: Prehashed<Library>,
book: Prehashed<FontBook>,
fonts: Vec<Font>,
}
impl Default for TestBase {
fn default() -> Self {
let fonts: Vec<_> = typst_assets::fonts()
.chain(typst_dev_assets::fonts())
.flat_map(|data| Font::iter(Bytes::from_static(data)))
.collect();
Self {
library: Prehashed::new(Library::default()),
book: Prehashed::new(FontBook::from_fonts(&fonts)),
fonts,
}
}
}
}
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