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-rw-r--r--crates/ra_lsp_server/src/conv.rs37
1 files changed, 1 insertions, 36 deletions
diff --git a/crates/ra_lsp_server/src/conv.rs b/crates/ra_lsp_server/src/conv.rs
index 051f1f995..63827aeea 100644
--- a/crates/ra_lsp_server/src/conv.rs
+++ b/crates/ra_lsp_server/src/conv.rs
@@ -3,7 +3,7 @@ use languageserver_types::{
3 TextDocumentItem, TextDocumentPositionParams, Url, VersionedTextDocumentIdentifier, InsertTextFormat, 3 TextDocumentItem, TextDocumentPositionParams, Url, VersionedTextDocumentIdentifier, InsertTextFormat,
4}; 4};
5use ra_analysis::{FileId, FileSystemEdit, SourceChange, SourceFileEdit, FilePosition, CompletionItem, CompletionItemKind, InsertText}; 5use ra_analysis::{FileId, FileSystemEdit, SourceChange, SourceFileEdit, FilePosition, CompletionItem, CompletionItemKind, InsertText};
6use ra_editor::{LineCol, LineIndex}; 6use ra_editor::{LineCol, LineIndex, translate_offset_with_edit};
7use ra_text_edit::{AtomTextEdit, TextEdit}; 7use ra_text_edit::{AtomTextEdit, TextEdit};
8use ra_syntax::{SyntaxKind, TextRange, TextUnit}; 8use ra_syntax::{SyntaxKind, TextRange, TextUnit};
9 9
@@ -261,41 +261,6 @@ impl TryConvWith for SourceChange {
261 } 261 }
262} 262}
263 263
264// HACK: we should translate offset to line/column using linde_index *with edits applied*.
265// A naive version of this function would be to apply `edits` to the original text,
266// construct a new line index and use that, but it would be slow.
267//
268// Writing fast & correct version is issue #105, let's use a quick hack in the meantime
269fn translate_offset_with_edit(
270 pre_edit_index: &LineIndex,
271 offset: TextUnit,
272 edits: &[AtomTextEdit],
273) -> LineCol {
274 let fallback = pre_edit_index.line_col(offset);
275 let edit = match edits.first() {
276 None => return fallback,
277 Some(edit) => edit,
278 };
279 let end_offset = edit.delete.start() + TextUnit::of_str(&edit.insert);
280 if !(edit.delete.start() <= offset && offset <= end_offset) {
281 return fallback;
282 }
283 let rel_offset = offset - edit.delete.start();
284 let in_edit_line_col = LineIndex::new(&edit.insert).line_col(rel_offset);
285 let edit_line_col = pre_edit_index.line_col(edit.delete.start());
286 if in_edit_line_col.line == 0 {
287 LineCol {
288 line: edit_line_col.line,
289 col_utf16: edit_line_col.col_utf16 + in_edit_line_col.col_utf16,
290 }
291 } else {
292 LineCol {
293 line: edit_line_col.line + in_edit_line_col.line,
294 col_utf16: in_edit_line_col.col_utf16,
295 }
296 }
297}
298
299impl TryConvWith for SourceFileEdit { 264impl TryConvWith for SourceFileEdit {
300 type Ctx = ServerWorld; 265 type Ctx = ServerWorld;
301 type Output = TextDocumentEdit; 266 type Output = TextDocumentEdit;