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|
use base_db::{
semantics::{tex::LabelKind, Span},
util::{render_label, RenderedObject},
DocumentData,
};
use rowan::ast::AstNode;
use syntax::latex;
use crate::{
util::{find_curly_group_word, find_curly_group_word_list, CompletionBuilder},
CompletionItem, CompletionItemData, CompletionParams,
};
fn trim_prefix<'a>(prefix: Option<&'a str>, text: &'a str) -> &'a str {
prefix
.and_then(|pref| text.strip_prefix(pref))
.unwrap_or(text)
}
pub fn complete_label_references<'a>(
params: &'a CompletionParams<'a>,
builder: &mut CompletionBuilder<'a>,
) -> Option<()> {
let FindResult {
cursor,
is_math,
command,
} = find_reference(params).or_else(|| find_reference_range(params))?;
let ref_pref = params
.feature
.workspace
.config()
.syntax
.label_reference_prefixes
.iter()
.find_map(|(k, v)| if *k == command { Some(v) } else { None })
.map(|x| x.as_str());
for document in ¶ms.feature.project.documents {
let DocumentData::Tex(data) = &document.data else {
continue;
};
for label in data
.semantics
.labels
.iter()
.filter(|label| label.kind == LabelKind::Definition)
{
if ref_pref.map_or(false, |pref| !label.name.text.starts_with(pref)) {
continue;
}
let labeltext = trim_prefix(ref_pref, &label.name.text);
match render_label(params.feature.workspace, ¶ms.feature.project, label) {
Some(rendered_label) => {
if is_math && !matches!(rendered_label.object, RenderedObject::Equation) {
continue;
}
let header = rendered_label.detail();
let footer = match &rendered_label.object {
RenderedObject::Float { caption, .. } => Some(*caption),
_ => None,
};
let keywords = format!("{} {}", labeltext, rendered_label.reference());
if let Some(score) = builder.matcher.score(&keywords, &cursor.text) {
let name = trim_prefix(ref_pref, &label.name.text);
let data = CompletionItemData::Label(crate::LabelData {
name,
header,
footer,
object: Some(rendered_label.object),
keywords,
});
builder
.items
.push(CompletionItem::new_simple(score, cursor.range, data));
}
}
None => {
if let Some(score) = builder.matcher.score(&label.name.text, &cursor.text) {
let name = trim_prefix(ref_pref, &label.name.text);
let data = CompletionItemData::Label(crate::LabelData {
name,
header: None,
footer: None,
object: None,
keywords: labeltext.to_string(),
});
builder
.items
.push(CompletionItem::new_simple(score, cursor.range, data));
}
}
}
}
}
Some(())
}
struct FindResult {
cursor: Span,
is_math: bool,
command: String,
}
fn find_reference(params: &CompletionParams) -> Option<FindResult> {
let (cursor, group) = find_curly_group_word_list(params)?;
let reference = latex::LabelReference::cast(group.syntax().parent()?)?;
let is_math = reference.command()?.text() == "\\eqref";
Some(FindResult {
cursor,
is_math,
command: reference.command()?.text()[1..].to_string(),
})
}
fn find_reference_range(params: &CompletionParams) -> Option<FindResult> {
let (cursor, group) = find_curly_group_word(params)?;
let refrange = latex::LabelReferenceRange::cast(group.syntax().parent()?)?;
Some(FindResult {
cursor,
is_math: false,
command: refrange.command()?.text()[1..].to_string(),
})
}
|
