1 //! Convenience module responsible for translating between rust-analyzer's types
5 self, CreateFile, DiagnosticSeverity, DocumentChangeOperation, DocumentChanges, Documentation,
6 Location, LocationLink, MarkupContent, MarkupKind, Position, Range, RenameFile, ResourceOp,
7 SemanticTokenModifier, SemanticTokenType, SymbolKind, TextDocumentEdit, TextDocumentIdentifier,
8 TextDocumentItem, TextDocumentPositionParams, Url, VersionedTextDocumentIdentifier,
12 translate_offset_with_edit, CompletionItem, CompletionItemKind, FileId, FilePosition,
13 FileRange, FileSystemEdit, Fold, FoldKind, Highlight, HighlightModifier, HighlightTag,
14 InsertTextFormat, LineCol, LineIndex, NavigationTarget, RangeInfo, ReferenceAccess, Severity,
15 SourceChange, SourceFileEdit,
17 use ra_syntax::{SyntaxKind, TextRange, TextUnit};
18 use ra_text_edit::{AtomTextEdit, TextEdit};
19 use ra_vfs::LineEndings;
23 semantic_tokens::{self, ModifierSet, CONSTANT, CONTROL, MUTABLE, UNSAFE},
27 use semantic_tokens::{ATTRIBUTE, BUILTIN_TYPE, ENUM_MEMBER, LIFETIME, TYPE_ALIAS, UNION};
31 fn conv(self) -> Self::Output;
34 pub trait ConvWith<CTX> {
36 fn conv_with(self, ctx: CTX) -> Self::Output;
39 pub trait TryConvWith<CTX> {
41 fn try_conv_with(self, ctx: CTX) -> Result<Self::Output>;
44 impl Conv for SyntaxKind {
45 type Output = SymbolKind;
47 fn conv(self) -> <Self as Conv>::Output {
49 SyntaxKind::FN_DEF => SymbolKind::Function,
50 SyntaxKind::STRUCT_DEF => SymbolKind::Struct,
51 SyntaxKind::ENUM_DEF => SymbolKind::Enum,
52 SyntaxKind::ENUM_VARIANT => SymbolKind::EnumMember,
53 SyntaxKind::TRAIT_DEF => SymbolKind::Interface,
54 SyntaxKind::MACRO_CALL => SymbolKind::Function,
55 SyntaxKind::MODULE => SymbolKind::Module,
56 SyntaxKind::TYPE_ALIAS_DEF => SymbolKind::TypeParameter,
57 SyntaxKind::RECORD_FIELD_DEF => SymbolKind::Field,
58 SyntaxKind::STATIC_DEF => SymbolKind::Constant,
59 SyntaxKind::CONST_DEF => SymbolKind::Constant,
60 SyntaxKind::IMPL_DEF => SymbolKind::Object,
61 _ => SymbolKind::Variable,
66 impl Conv for ReferenceAccess {
67 type Output = ::lsp_types::DocumentHighlightKind;
69 fn conv(self) -> Self::Output {
70 use lsp_types::DocumentHighlightKind;
72 ReferenceAccess::Read => DocumentHighlightKind::Read,
73 ReferenceAccess::Write => DocumentHighlightKind::Write,
78 impl Conv for CompletionItemKind {
79 type Output = ::lsp_types::CompletionItemKind;
81 fn conv(self) -> <Self as Conv>::Output {
82 use lsp_types::CompletionItemKind::*;
84 CompletionItemKind::Keyword => Keyword,
85 CompletionItemKind::Snippet => Snippet,
86 CompletionItemKind::Module => Module,
87 CompletionItemKind::Function => Function,
88 CompletionItemKind::Struct => Struct,
89 CompletionItemKind::Enum => Enum,
90 CompletionItemKind::EnumVariant => EnumMember,
91 CompletionItemKind::BuiltinType => Struct,
92 CompletionItemKind::Binding => Variable,
93 CompletionItemKind::Field => Field,
94 CompletionItemKind::Trait => Interface,
95 CompletionItemKind::TypeAlias => Struct,
96 CompletionItemKind::Const => Constant,
97 CompletionItemKind::Static => Value,
98 CompletionItemKind::Method => Method,
99 CompletionItemKind::TypeParam => TypeParameter,
100 CompletionItemKind::Macro => Method,
105 impl Conv for Severity {
106 type Output = DiagnosticSeverity;
107 fn conv(self) -> DiagnosticSeverity {
109 Severity::Error => DiagnosticSeverity::Error,
110 Severity::WeakWarning => DiagnosticSeverity::Hint,
115 impl ConvWith<(&LineIndex, LineEndings)> for CompletionItem {
116 type Output = ::lsp_types::CompletionItem;
118 fn conv_with(self, ctx: (&LineIndex, LineEndings)) -> ::lsp_types::CompletionItem {
119 let mut additional_text_edits = Vec::new();
120 let mut text_edit = None;
121 // LSP does not allow arbitrary edits in completion, so we have to do a
122 // non-trivial mapping here.
123 for atom_edit in self.text_edit().as_atoms() {
124 if self.source_range().is_subrange(&atom_edit.delete) {
125 text_edit = Some(if atom_edit.delete == self.source_range() {
126 atom_edit.conv_with(ctx)
128 assert!(self.source_range().end() == atom_edit.delete.end());
130 TextRange::from_to(atom_edit.delete.start(), self.source_range().start());
131 let range2 = self.source_range();
132 let edit1 = AtomTextEdit::replace(range1, String::new());
133 let edit2 = AtomTextEdit::replace(range2, atom_edit.insert.clone());
134 additional_text_edits.push(edit1.conv_with(ctx));
138 assert!(self.source_range().intersection(&atom_edit.delete).is_none());
139 additional_text_edits.push(atom_edit.conv_with(ctx));
142 let text_edit = text_edit.unwrap();
144 let mut res = lsp_types::CompletionItem {
145 label: self.label().to_string(),
146 detail: self.detail().map(|it| it.to_string()),
147 filter_text: Some(self.lookup().to_string()),
148 kind: self.kind().map(|it| it.conv()),
149 text_edit: Some(text_edit),
150 additional_text_edits: Some(additional_text_edits),
151 documentation: self.documentation().map(|it| it.conv()),
152 deprecated: Some(self.deprecated()),
153 command: if self.trigger_call_info() {
154 let cmd = lsp_types::Command {
155 title: "triggerParameterHints".into(),
156 command: "editor.action.triggerParameterHints".into(),
166 if self.deprecated() {
167 res.tags = Some(vec![lsp_types::CompletionItemTag::Deprecated])
170 res.insert_text_format = Some(match self.insert_text_format() {
171 InsertTextFormat::Snippet => lsp_types::InsertTextFormat::Snippet,
172 InsertTextFormat::PlainText => lsp_types::InsertTextFormat::PlainText,
179 impl ConvWith<&LineIndex> for Position {
180 type Output = TextUnit;
182 fn conv_with(self, line_index: &LineIndex) -> TextUnit {
183 let line_col = LineCol { line: self.line as u32, col_utf16: self.character as u32 };
184 line_index.offset(line_col)
188 impl ConvWith<&LineIndex> for TextUnit {
189 type Output = Position;
191 fn conv_with(self, line_index: &LineIndex) -> Position {
192 let line_col = line_index.line_col(self);
193 Position::new(u64::from(line_col.line), u64::from(line_col.col_utf16))
197 impl ConvWith<&LineIndex> for TextRange {
200 fn conv_with(self, line_index: &LineIndex) -> Range {
201 Range::new(self.start().conv_with(line_index), self.end().conv_with(line_index))
205 impl ConvWith<&LineIndex> for Range {
206 type Output = TextRange;
208 fn conv_with(self, line_index: &LineIndex) -> TextRange {
209 TextRange::from_to(self.start.conv_with(line_index), self.end.conv_with(line_index))
213 impl Conv for ra_ide::Documentation {
214 type Output = lsp_types::Documentation;
215 fn conv(self) -> Documentation {
216 Documentation::MarkupContent(MarkupContent {
217 kind: MarkupKind::Markdown,
218 value: crate::markdown::format_docs(self.as_str()),
223 impl Conv for ra_ide::FunctionSignature {
224 type Output = lsp_types::SignatureInformation;
225 fn conv(self) -> Self::Output {
226 use lsp_types::{ParameterInformation, ParameterLabel, SignatureInformation};
228 let label = self.to_string();
230 let documentation = self.doc.map(|it| it.conv());
232 let parameters: Vec<ParameterInformation> = self
235 .map(|param| ParameterInformation {
236 label: ParameterLabel::Simple(param),
241 SignatureInformation { label, documentation, parameters: Some(parameters) }
245 impl ConvWith<(&LineIndex, LineEndings)> for TextEdit {
246 type Output = Vec<lsp_types::TextEdit>;
248 fn conv_with(self, ctx: (&LineIndex, LineEndings)) -> Vec<lsp_types::TextEdit> {
249 self.as_atoms().iter().map_conv_with(ctx).collect()
253 impl ConvWith<(&LineIndex, LineEndings)> for &AtomTextEdit {
254 type Output = lsp_types::TextEdit;
258 (line_index, line_endings): (&LineIndex, LineEndings),
259 ) -> lsp_types::TextEdit {
260 let mut new_text = self.insert.clone();
261 if line_endings == LineEndings::Dos {
262 new_text = new_text.replace('\n', "\r\n");
264 lsp_types::TextEdit { range: self.delete.conv_with(line_index), new_text }
268 pub(crate) struct FoldConvCtx<'a> {
269 pub(crate) text: &'a str,
270 pub(crate) line_index: &'a LineIndex,
271 pub(crate) line_folding_only: bool,
274 impl ConvWith<&FoldConvCtx<'_>> for Fold {
275 type Output = lsp_types::FoldingRange;
277 fn conv_with(self, ctx: &FoldConvCtx) -> lsp_types::FoldingRange {
278 let kind = match self.kind {
279 FoldKind::Comment => Some(lsp_types::FoldingRangeKind::Comment),
280 FoldKind::Imports => Some(lsp_types::FoldingRangeKind::Imports),
281 FoldKind::Mods => None,
282 FoldKind::Block => None,
285 let range = self.range.conv_with(&ctx.line_index);
287 if ctx.line_folding_only {
288 // Clients with line_folding_only == true (such as VSCode) will fold the whole end line
289 // even if it contains text not in the folding range. To prevent that we exclude
290 // range.end.line from the folding region if there is more text after range.end
292 let has_more_text_on_end_line = ctx.text
293 [TextRange::from_to(self.range.end(), TextUnit::of_str(ctx.text))]
295 .take_while(|it| *it != '\n')
296 .any(|it| !it.is_whitespace());
298 let end_line = if has_more_text_on_end_line {
299 range.end.line.saturating_sub(1)
304 lsp_types::FoldingRange {
305 start_line: range.start.line,
306 start_character: None,
312 lsp_types::FoldingRange {
313 start_line: range.start.line,
314 start_character: Some(range.start.character),
315 end_line: range.end.line,
316 end_character: Some(range.end.character),
323 impl Conv for Highlight {
324 type Output = (u32, u32);
326 fn conv(self) -> Self::Output {
327 let mut mods = ModifierSet::default();
328 let type_ = match self.tag {
329 HighlightTag::Struct => SemanticTokenType::STRUCT,
330 HighlightTag::Enum => SemanticTokenType::ENUM,
331 HighlightTag::Union => UNION,
332 HighlightTag::TypeAlias => TYPE_ALIAS,
333 HighlightTag::Trait => SemanticTokenType::INTERFACE,
334 HighlightTag::BuiltinType => BUILTIN_TYPE,
335 HighlightTag::SelfType => SemanticTokenType::TYPE,
336 HighlightTag::Field => SemanticTokenType::MEMBER,
337 HighlightTag::Function => SemanticTokenType::FUNCTION,
338 HighlightTag::Module => SemanticTokenType::NAMESPACE,
339 HighlightTag::Constant => {
341 mods |= SemanticTokenModifier::STATIC;
342 SemanticTokenType::VARIABLE
344 HighlightTag::Static => {
345 mods |= SemanticTokenModifier::STATIC;
346 SemanticTokenType::VARIABLE
348 HighlightTag::EnumVariant => ENUM_MEMBER,
349 HighlightTag::Macro => SemanticTokenType::MACRO,
350 HighlightTag::Local => SemanticTokenType::VARIABLE,
351 HighlightTag::TypeParam => SemanticTokenType::TYPE_PARAMETER,
352 HighlightTag::Lifetime => LIFETIME,
353 HighlightTag::ByteLiteral | HighlightTag::NumericLiteral => SemanticTokenType::NUMBER,
354 HighlightTag::CharLiteral | HighlightTag::StringLiteral => SemanticTokenType::STRING,
355 HighlightTag::Comment => SemanticTokenType::COMMENT,
356 HighlightTag::Attribute => ATTRIBUTE,
357 HighlightTag::Keyword => SemanticTokenType::KEYWORD,
360 for modifier in self.modifiers.iter() {
361 let modifier = match modifier {
362 HighlightModifier::Definition => SemanticTokenModifier::DECLARATION,
363 HighlightModifier::Control => CONTROL,
364 HighlightModifier::Mutable => MUTABLE,
365 HighlightModifier::Unsafe => UNSAFE,
370 (semantic_tokens::type_index(type_), mods.0)
374 impl<T: ConvWith<CTX>, CTX> ConvWith<CTX> for Option<T> {
375 type Output = Option<T::Output>;
377 fn conv_with(self, ctx: CTX) -> Self::Output {
378 self.map(|x| ConvWith::conv_with(x, ctx))
382 impl TryConvWith<&WorldSnapshot> for &Url {
383 type Output = FileId;
384 fn try_conv_with(self, world: &WorldSnapshot) -> Result<FileId> {
385 world.uri_to_file_id(self)
389 impl TryConvWith<&WorldSnapshot> for FileId {
391 fn try_conv_with(self, world: &WorldSnapshot) -> Result<Url> {
392 world.file_id_to_uri(self)
396 impl TryConvWith<&WorldSnapshot> for &TextDocumentItem {
397 type Output = FileId;
398 fn try_conv_with(self, world: &WorldSnapshot) -> Result<FileId> {
399 self.uri.try_conv_with(world)
403 impl TryConvWith<&WorldSnapshot> for &VersionedTextDocumentIdentifier {
404 type Output = FileId;
405 fn try_conv_with(self, world: &WorldSnapshot) -> Result<FileId> {
406 self.uri.try_conv_with(world)
410 impl TryConvWith<&WorldSnapshot> for &TextDocumentIdentifier {
411 type Output = FileId;
412 fn try_conv_with(self, world: &WorldSnapshot) -> Result<FileId> {
413 world.uri_to_file_id(&self.uri)
417 impl TryConvWith<&WorldSnapshot> for &TextDocumentPositionParams {
418 type Output = FilePosition;
419 fn try_conv_with(self, world: &WorldSnapshot) -> Result<FilePosition> {
420 let file_id = self.text_document.try_conv_with(world)?;
421 let line_index = world.analysis().file_line_index(file_id)?;
422 let offset = self.position.conv_with(&line_index);
423 Ok(FilePosition { file_id, offset })
427 impl TryConvWith<&WorldSnapshot> for (&TextDocumentIdentifier, Range) {
428 type Output = FileRange;
429 fn try_conv_with(self, world: &WorldSnapshot) -> Result<FileRange> {
430 let file_id = self.0.try_conv_with(world)?;
431 let line_index = world.analysis().file_line_index(file_id)?;
432 let range = self.1.conv_with(&line_index);
433 Ok(FileRange { file_id, range })
437 impl<T: TryConvWith<CTX>, CTX: Copy> TryConvWith<CTX> for Vec<T> {
438 type Output = Vec<<T as TryConvWith<CTX>>::Output>;
439 fn try_conv_with(self, ctx: CTX) -> Result<Self::Output> {
440 let mut res = Vec::with_capacity(self.len());
442 res.push(item.try_conv_with(ctx)?);
448 impl TryConvWith<&WorldSnapshot> for SourceChange {
449 type Output = req::SourceChange;
450 fn try_conv_with(self, world: &WorldSnapshot) -> Result<req::SourceChange> {
451 let cursor_position = match self.cursor_position {
454 let line_index = world.analysis().file_line_index(pos.file_id)?;
458 .find(|it| it.file_id == pos.file_id)
460 let line_col = match edit {
461 Some(edit) => translate_offset_with_edit(&*line_index, pos.offset, edit),
462 None => line_index.line_col(pos.offset),
465 Position::new(u64::from(line_col.line), u64::from(line_col.col_utf16));
466 Some(TextDocumentPositionParams {
467 text_document: TextDocumentIdentifier::new(pos.file_id.try_conv_with(world)?),
472 let mut document_changes: Vec<DocumentChangeOperation> = Vec::new();
473 for resource_op in self.file_system_edits.try_conv_with(world)? {
474 document_changes.push(DocumentChangeOperation::Op(resource_op));
476 for text_document_edit in self.source_file_edits.try_conv_with(world)? {
477 document_changes.push(DocumentChangeOperation::Edit(text_document_edit));
479 let workspace_edit = WorkspaceEdit {
481 document_changes: Some(DocumentChanges::Operations(document_changes)),
483 Ok(req::SourceChange { label: self.label, workspace_edit, cursor_position })
487 impl TryConvWith<&WorldSnapshot> for SourceFileEdit {
488 type Output = TextDocumentEdit;
489 fn try_conv_with(self, world: &WorldSnapshot) -> Result<TextDocumentEdit> {
490 let text_document = VersionedTextDocumentIdentifier {
491 uri: self.file_id.try_conv_with(world)?,
494 let line_index = world.analysis().file_line_index(self.file_id)?;
495 let line_endings = world.file_line_endings(self.file_id);
497 self.edit.as_atoms().iter().map_conv_with((&line_index, line_endings)).collect();
498 Ok(TextDocumentEdit { text_document, edits })
502 impl TryConvWith<&WorldSnapshot> for FileSystemEdit {
503 type Output = ResourceOp;
504 fn try_conv_with(self, world: &WorldSnapshot) -> Result<ResourceOp> {
505 let res = match self {
506 FileSystemEdit::CreateFile { source_root, path } => {
507 let uri = world.path_to_uri(source_root, &path)?;
508 ResourceOp::Create(CreateFile { uri, options: None })
510 FileSystemEdit::MoveFile { src, dst_source_root, dst_path } => {
511 let old_uri = world.file_id_to_uri(src)?;
512 let new_uri = world.path_to_uri(dst_source_root, &dst_path)?;
513 ResourceOp::Rename(RenameFile { old_uri, new_uri, options: None })
520 impl TryConvWith<&WorldSnapshot> for &NavigationTarget {
521 type Output = Location;
522 fn try_conv_with(self, world: &WorldSnapshot) -> Result<Location> {
523 let line_index = world.analysis().file_line_index(self.file_id())?;
524 let range = self.range();
525 to_location(self.file_id(), range, &world, &line_index)
529 impl TryConvWith<&WorldSnapshot> for (FileId, RangeInfo<NavigationTarget>) {
530 type Output = LocationLink;
531 fn try_conv_with(self, world: &WorldSnapshot) -> Result<LocationLink> {
532 let (src_file_id, target) = self;
534 let target_uri = target.info.file_id().try_conv_with(world)?;
535 let src_line_index = world.analysis().file_line_index(src_file_id)?;
536 let tgt_line_index = world.analysis().file_line_index(target.info.file_id())?;
538 let target_range = target.info.full_range().conv_with(&tgt_line_index);
540 let target_selection_range = target
543 .map(|it| it.conv_with(&tgt_line_index))
544 .unwrap_or(target_range);
546 let res = LocationLink {
547 origin_selection_range: Some(target.range.conv_with(&src_line_index)),
550 target_selection_range,
556 impl TryConvWith<&WorldSnapshot> for (FileId, RangeInfo<Vec<NavigationTarget>>) {
557 type Output = req::GotoDefinitionResponse;
558 fn try_conv_with(self, world: &WorldSnapshot) -> Result<req::GotoTypeDefinitionResponse> {
559 let (file_id, RangeInfo { range, info: navs }) = self;
562 .map(|nav| (file_id, RangeInfo::new(range, nav)))
563 .try_conv_with_to_vec(world)?;
564 if world.options.supports_location_link {
567 let locations: Vec<Location> = links
569 .map(|link| Location { uri: link.target_uri, range: link.target_selection_range })
576 pub fn to_call_hierarchy_item(
579 world: &WorldSnapshot,
580 line_index: &LineIndex,
581 nav: NavigationTarget,
582 ) -> Result<lsp_types::CallHierarchyItem> {
583 Ok(lsp_types::CallHierarchyItem {
584 name: nav.name().to_string(),
585 kind: nav.kind().conv(),
587 detail: nav.description().map(|it| it.to_string()),
588 uri: file_id.try_conv_with(&world)?,
589 range: nav.range().conv_with(&line_index),
590 selection_range: range.conv_with(&line_index),
597 world: &WorldSnapshot,
598 line_index: &LineIndex,
599 ) -> Result<Location> {
600 let url = file_id.try_conv_with(world)?;
601 let loc = Location::new(url, range.conv_with(line_index));
605 pub trait MapConvWith<CTX>: Sized {
608 fn map_conv_with(self, ctx: CTX) -> ConvWithIter<Self, CTX> {
609 ConvWithIter { iter: self, ctx }
613 impl<CTX, I> MapConvWith<CTX> for I
616 I::Item: ConvWith<CTX>,
618 type Output = <I::Item as ConvWith<CTX>>::Output;
621 pub struct ConvWithIter<I, CTX> {
626 impl<I, CTX> Iterator for ConvWithIter<I, CTX>
629 I::Item: ConvWith<CTX>,
632 type Item = <I::Item as ConvWith<CTX>>::Output;
634 fn next(&mut self) -> Option<Self::Item> {
635 self.iter.next().map(|item| item.conv_with(self.ctx))
639 pub trait TryConvWithToVec<CTX>: Sized {
642 fn try_conv_with_to_vec(self, ctx: CTX) -> Result<Vec<Self::Output>>;
645 impl<I, CTX> TryConvWithToVec<CTX> for I
648 I::Item: TryConvWith<CTX>,
651 type Output = <I::Item as TryConvWith<CTX>>::Output;
653 fn try_conv_with_to_vec(self, ctx: CTX) -> Result<Vec<Self::Output>> {
654 self.map(|it| it.try_conv_with(ctx)).collect()
661 use test_utils::extract_ranges;
664 fn conv_fold_line_folding_only_fixup() {
665 let text = r#"<fold>mod a;
672 }</fold> else <fold>{
677 let (ranges, text) = extract_ranges(text, "fold");
678 assert_eq!(ranges.len(), 4);
680 Fold { range: ranges[0], kind: FoldKind::Mods },
681 Fold { range: ranges[1], kind: FoldKind::Block },
682 Fold { range: ranges[2], kind: FoldKind::Block },
683 Fold { range: ranges[3], kind: FoldKind::Block },
686 let line_index = LineIndex::new(&text);
687 let ctx = FoldConvCtx { text: &text, line_index: &line_index, line_folding_only: true };
688 let converted: Vec<_> = folds.into_iter().map_conv_with(&ctx).collect();
690 let expected_lines = [(0, 2), (4, 10), (5, 6), (7, 9)];
691 assert_eq!(converted.len(), expected_lines.len());
692 for (folding_range, (start_line, end_line)) in converted.iter().zip(expected_lines.iter()) {
693 assert_eq!(folding_range.start_line, *start_line);
694 assert_eq!(folding_range.start_character, None);
695 assert_eq!(folding_range.end_line, *end_line);
696 assert_eq!(folding_range.end_character, None);