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path: root/support/texlab/src/features/completion/begin_command.rs
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-rw-r--r--support/texlab/src/features/completion/begin_command.rs84
1 files changed, 84 insertions, 0 deletions
diff --git a/support/texlab/src/features/completion/begin_command.rs b/support/texlab/src/features/completion/begin_command.rs
new file mode 100644
index 0000000000..ebd272711e
--- /dev/null
+++ b/support/texlab/src/features/completion/begin_command.rs
@@ -0,0 +1,84 @@
+use cancellation::CancellationToken;
+use lsp_types::CompletionParams;
+
+use crate::features::cursor::CursorContext;
+
+use super::types::{InternalCompletionItem, InternalCompletionItemData};
+
+pub fn complete_begin_command(
+ context: &CursorContext<CompletionParams>,
+ items: &mut Vec<InternalCompletionItem>,
+ cancellation_token: &CancellationToken,
+) -> Option<()> {
+ cancellation_token.result().ok()?;
+ let range = context.cursor.command_range(context.offset)?;
+
+ items.push(InternalCompletionItem::new(
+ range,
+ InternalCompletionItemData::BeginCommand,
+ ));
+ Some(())
+}
+
+#[cfg(test)]
+mod tests {
+ use cstree::TextRange;
+
+ use crate::features::testing::FeatureTester;
+
+ use super::*;
+
+ #[test]
+ fn test_empty_latex_document() {
+ let request = FeatureTester::builder()
+ .files(vec![("main.tex", "")])
+ .main("main.tex")
+ .line(0)
+ .character(0)
+ .build()
+ .completion();
+
+ let context = CursorContext::new(request);
+ let mut actual_items = Vec::new();
+ complete_begin_command(&context, &mut actual_items, CancellationToken::none());
+
+ assert!(actual_items.is_empty());
+ }
+
+ #[test]
+ fn test_empty_bibtex_document() {
+ let request = FeatureTester::builder()
+ .files(vec![("main.bib", "")])
+ .main("main.bib")
+ .line(0)
+ .character(0)
+ .build()
+ .completion();
+
+ let context = CursorContext::new(request);
+ let mut actual_items = Vec::new();
+ complete_begin_command(&context, &mut actual_items, CancellationToken::none());
+
+ assert!(actual_items.is_empty());
+ }
+
+ #[test]
+ fn test_latex_simple() {
+ let request = FeatureTester::builder()
+ .files(vec![("main.tex", "\\")])
+ .main("main.tex")
+ .line(0)
+ .character(1)
+ .build()
+ .completion();
+
+ let context = CursorContext::new(request);
+ let mut actual_items = Vec::new();
+ complete_begin_command(&context, &mut actual_items, CancellationToken::none());
+
+ assert!(!actual_items.is_empty());
+ for item in actual_items {
+ assert_eq!(item.range, TextRange::new(1.into(), 1.into()));
+ }
+ }
+}