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use super::combinators::{self, Parameter};
use crate::completion::factory;
use crate::completion::DATABASE;
use crate::syntax::*;
use crate::workspace::*;
use futures_boxed::boxed;
use lsp_types::{CompletionItem, CompletionParams, TextEdit};
#[derive(Debug, PartialEq, Eq, Clone)]
pub struct LatexClassImportProvider;
impl FeatureProvider for LatexClassImportProvider {
type Params = CompletionParams;
type Output = Vec<CompletionItem>;
#[boxed]
async fn execute<'a>(&'a self, request: &'a FeatureRequest<Self::Params>) -> Self::Output {
import(request, LatexIncludeKind::Class, factory::class).await
}
}
#[derive(Debug, PartialEq, Eq, Clone)]
pub struct LatexPackageImportProvider;
impl FeatureProvider for LatexPackageImportProvider {
type Params = CompletionParams;
type Output = Vec<CompletionItem>;
#[boxed]
async fn execute<'a>(&'a self, request: &'a FeatureRequest<Self::Params>) -> Self::Output {
import(request, LatexIncludeKind::Package, factory::package).await
}
}
async fn import<F>(
request: &FeatureRequest<CompletionParams>,
kind: LatexIncludeKind,
factory: F,
) -> Vec<CompletionItem>
where
F: Fn(&FeatureRequest<CompletionParams>, &'static str, TextEdit) -> CompletionItem,
{
let extension = if kind == LatexIncludeKind::Package {
"sty"
} else {
"cls"
};
let parameters = LANGUAGE_DATA
.include_commands
.iter()
.filter(|cmd| cmd.kind == kind)
.map(|cmd| Parameter::new(&cmd.name, cmd.index));
combinators::argument(request, parameters, |context| {
async move {
let mut items = Vec::new();
for component in &DATABASE.components {
for file_name in &component.file_names {
if file_name.ends_with(extension) {
let stem = &file_name[0..file_name.len() - 4];
let text_edit = TextEdit::new(context.range, stem.into());
let item = factory(request, stem, text_edit);
items.push(item);
}
}
}
items
}
})
.await
}
#[cfg(test)]
mod tests {
use super::*;
use lsp_types::Position;
#[test]
fn test_class() {
let items = test_feature(
LatexClassImportProvider,
FeatureSpec {
files: vec![FeatureSpec::file("foo.tex", "\\documentclass{}")],
main_file: "foo.tex",
position: Position::new(0, 15),
..FeatureSpec::default()
},
);
assert!(items.iter().any(|item| item.label == "beamer"));
assert!(items.iter().all(|item| item.label != "amsmath"));
}
#[test]
fn test_package() {
let items = test_feature(
LatexPackageImportProvider,
FeatureSpec {
files: vec![FeatureSpec::file("foo.tex", "\\usepackage{}")],
main_file: "foo.tex",
position: Position::new(0, 12),
..FeatureSpec::default()
},
);
assert!(items.iter().all(|item| item.label != "beamer"));
assert!(items.iter().any(|item| item.label == "amsmath"));
}
}
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