crates/rust-analyzer/src/to_proto.rs

   1 //! Conversion of rust-analyzer specific types to lsp_types equivalents.
   2 use ra_db::{FileId, FileRange};
   3 use ra_ide::{
   4     Assist, CompletionItem, CompletionItemKind, Documentation, FileSystemEdit, Fold, FoldKind,
   5     FunctionSignature, Highlight, HighlightModifier, HighlightTag, HighlightedRange, Indel,
   6     InlayHint, InlayKind, InsertTextFormat, LineIndex, NavigationTarget, ReferenceAccess,
   7     ResolvedAssist, Runnable, Severity, SourceChange, SourceFileEdit, TextEdit,
   8 };
   9 use ra_syntax::{SyntaxKind, TextRange, TextSize};
  10 use ra_vfs::LineEndings;
  11
  12 use crate::{
  13     cargo_target_spec::CargoTargetSpec, global_state::GlobalStateSnapshot, lsp_ext,
  14     semantic_tokens, Result,
  15 };
  16
  17 pub(crate) fn position(line_index: &LineIndex, offset: TextSize) -> lsp_types::Position {
  18     let line_col = line_index.line_col(offset);
  19     let line = u64::from(line_col.line);
  20     let character = u64::from(line_col.col_utf16);
  21     lsp_types::Position::new(line, character)
  22 }
  23
  24 pub(crate) fn range(line_index: &LineIndex, range: TextRange) -> lsp_types::Range {
  25     let start = position(line_index, range.start());
  26     let end = position(line_index, range.end());
  27     lsp_types::Range::new(start, end)
  28 }
  29
  30 pub(crate) fn symbol_kind(syntax_kind: SyntaxKind) -> lsp_types::SymbolKind {
  31     match syntax_kind {
  32         SyntaxKind::FN_DEF => lsp_types::SymbolKind::Function,
  33         SyntaxKind::STRUCT_DEF => lsp_types::SymbolKind::Struct,
  34         SyntaxKind::ENUM_DEF => lsp_types::SymbolKind::Enum,
  35         SyntaxKind::ENUM_VARIANT => lsp_types::SymbolKind::EnumMember,
  36         SyntaxKind::TRAIT_DEF => lsp_types::SymbolKind::Interface,
  37         SyntaxKind::MACRO_CALL => lsp_types::SymbolKind::Function,
  38         SyntaxKind::MODULE => lsp_types::SymbolKind::Module,
  39         SyntaxKind::TYPE_ALIAS_DEF => lsp_types::SymbolKind::TypeParameter,
  40         SyntaxKind::RECORD_FIELD_DEF => lsp_types::SymbolKind::Field,
  41         SyntaxKind::STATIC_DEF => lsp_types::SymbolKind::Constant,
  42         SyntaxKind::CONST_DEF => lsp_types::SymbolKind::Constant,
  43         SyntaxKind::IMPL_DEF => lsp_types::SymbolKind::Object,
  44         _ => lsp_types::SymbolKind::Variable,
  45     }
  46 }
  47
  48 pub(crate) fn document_highlight_kind(
  49     reference_access: ReferenceAccess,
  50 ) -> lsp_types::DocumentHighlightKind {
  51     match reference_access {
  52         ReferenceAccess::Read => lsp_types::DocumentHighlightKind::Read,
  53         ReferenceAccess::Write => lsp_types::DocumentHighlightKind::Write,
  54     }
  55 }
  56
  57 pub(crate) fn diagnostic_severity(severity: Severity) -> lsp_types::DiagnosticSeverity {
  58     match severity {
  59         Severity::Error => lsp_types::DiagnosticSeverity::Error,
  60         Severity::WeakWarning => lsp_types::DiagnosticSeverity::Hint,
  61     }
  62 }
  63
  64 pub(crate) fn documentation(documentation: Documentation) -> lsp_types::Documentation {
  65     let value = crate::markdown::format_docs(documentation.as_str());
  66     let markup_content = lsp_types::MarkupContent { kind: lsp_types::MarkupKind::Markdown, value };
  67     lsp_types::Documentation::MarkupContent(markup_content)
  68 }
  69
  70 pub(crate) fn insert_text_format(
  71     insert_text_format: InsertTextFormat,
  72 ) -> lsp_types::InsertTextFormat {
  73     match insert_text_format {
  74         InsertTextFormat::Snippet => lsp_types::InsertTextFormat::Snippet,
  75         InsertTextFormat::PlainText => lsp_types::InsertTextFormat::PlainText,
  76     }
  77 }
  78
  79 pub(crate) fn completion_item_kind(
  80     completion_item_kind: CompletionItemKind,
  81 ) -> lsp_types::CompletionItemKind {
  82     match completion_item_kind {
  83         CompletionItemKind::Keyword => lsp_types::CompletionItemKind::Keyword,
  84         CompletionItemKind::Snippet => lsp_types::CompletionItemKind::Snippet,
  85         CompletionItemKind::Module => lsp_types::CompletionItemKind::Module,
  86         CompletionItemKind::Function => lsp_types::CompletionItemKind::Function,
  87         CompletionItemKind::Struct => lsp_types::CompletionItemKind::Struct,
  88         CompletionItemKind::Enum => lsp_types::CompletionItemKind::Enum,
  89         CompletionItemKind::EnumVariant => lsp_types::CompletionItemKind::EnumMember,
  90         CompletionItemKind::BuiltinType => lsp_types::CompletionItemKind::Struct,
  91         CompletionItemKind::Binding => lsp_types::CompletionItemKind::Variable,
  92         CompletionItemKind::Field => lsp_types::CompletionItemKind::Field,
  93         CompletionItemKind::Trait => lsp_types::CompletionItemKind::Interface,
  94         CompletionItemKind::TypeAlias => lsp_types::CompletionItemKind::Struct,
  95         CompletionItemKind::Const => lsp_types::CompletionItemKind::Constant,
  96         CompletionItemKind::Static => lsp_types::CompletionItemKind::Value,
  97         CompletionItemKind::Method => lsp_types::CompletionItemKind::Method,
  98         CompletionItemKind::TypeParam => lsp_types::CompletionItemKind::TypeParameter,
  99         CompletionItemKind::Macro => lsp_types::CompletionItemKind::Method,
 100         CompletionItemKind::Attribute => lsp_types::CompletionItemKind::EnumMember,
 101     }
 102 }
 103
 104 pub(crate) fn text_edit(
 105     line_index: &LineIndex,
 106     line_endings: LineEndings,
 107     indel: Indel,
 108 ) -> lsp_types::TextEdit {
 109     let range = range(line_index, indel.delete);
 110     let new_text = match line_endings {
 111         LineEndings::Unix => indel.insert,
 112         LineEndings::Dos => indel.insert.replace('\n', "\r\n"),
 113     };
 114     lsp_types::TextEdit { range, new_text }
 115 }
 116
 117 pub(crate) fn snippet_text_edit(
 118     line_index: &LineIndex,
 119     line_endings: LineEndings,
 120     is_snippet: bool,
 121     indel: Indel,
 122 ) -> lsp_ext::SnippetTextEdit {
 123     let text_edit = text_edit(line_index, line_endings, indel);
 124     let insert_text_format =
 125         if is_snippet { Some(lsp_types::InsertTextFormat::Snippet) } else { None };
 126     lsp_ext::SnippetTextEdit {
 127         range: text_edit.range,
 128         new_text: text_edit.new_text,
 129         insert_text_format,
 130     }
 131 }
 132
 133 pub(crate) fn text_edit_vec(
 134     line_index: &LineIndex,
 135     line_endings: LineEndings,
 136     text_edit: TextEdit,
 137 ) -> Vec<lsp_types::TextEdit> {
 138     text_edit.into_iter().map(|indel| self::text_edit(line_index, line_endings, indel)).collect()
 139 }
 140
 141 pub(crate) fn snippet_text_edit_vec(
 142     line_index: &LineIndex,
 143     line_endings: LineEndings,
 144     is_snippet: bool,
 145     text_edit: TextEdit,
 146 ) -> Vec<lsp_ext::SnippetTextEdit> {
 147     text_edit
 148         .into_iter()
 149         .map(|indel| self::snippet_text_edit(line_index, line_endings, is_snippet, indel))
 150         .collect()
 151 }
 152
 153 pub(crate) fn completion_item(
 154     line_index: &LineIndex,
 155     line_endings: LineEndings,
 156     completion_item: CompletionItem,
 157 ) -> lsp_types::CompletionItem {
 158     let mut additional_text_edits = Vec::new();
 159     let mut text_edit = None;
 160     // LSP does not allow arbitrary edits in completion, so we have to do a
 161     // non-trivial mapping here.
 162     let source_range = completion_item.source_range();
 163     for indel in completion_item.text_edit().iter() {
 164         if indel.delete.contains_range(source_range) {
 165             text_edit = Some(if indel.delete == source_range {
 166                 self::text_edit(line_index, line_endings, indel.clone())
 167             } else {
 168                 assert!(source_range.end() == indel.delete.end());
 169                 let range1 = TextRange::new(indel.delete.start(), source_range.start());
 170                 let range2 = source_range;
 171                 let indel1 = Indel::replace(range1, String::new());
 172                 let indel2 = Indel::replace(range2, indel.insert.clone());
 173                 additional_text_edits.push(self::text_edit(line_index, line_endings, indel1));
 174                 self::text_edit(line_index, line_endings, indel2)
 175             })
 176         } else {
 177             assert!(source_range.intersect(indel.delete).is_none());
 178             let text_edit = self::text_edit(line_index, line_endings, indel.clone());
 179             additional_text_edits.push(text_edit);
 180         }
 181     }
 182     let text_edit = text_edit.unwrap();
 183
 184     let mut res = lsp_types::CompletionItem {
 185         label: completion_item.label().to_string(),
 186         detail: completion_item.detail().map(|it| it.to_string()),
 187         filter_text: Some(completion_item.lookup().to_string()),
 188         kind: completion_item.kind().map(completion_item_kind),
 189         text_edit: Some(text_edit.into()),
 190         additional_text_edits: Some(additional_text_edits),
 191         documentation: completion_item.documentation().map(documentation),
 192         deprecated: Some(completion_item.deprecated()),
 193         ..Default::default()
 194     };
 195
 196     if completion_item.score().is_some() {
 197         res.preselect = Some(true);
 198         // HACK: sort preselect items first
 199         res.sort_text = Some(format!(" {}", completion_item.label()));
 200     }
 201
 202     if completion_item.deprecated() {
 203         res.tags = Some(vec![lsp_types::CompletionItemTag::Deprecated])
 204     }
 205
 206     if completion_item.trigger_call_info() {
 207         res.command = Some(lsp_types::Command {
 208             title: "triggerParameterHints".into(),
 209             command: "editor.action.triggerParameterHints".into(),
 210             arguments: None,
 211         });
 212     }
 213
 214     res.insert_text_format = Some(insert_text_format(completion_item.insert_text_format()));
 215
 216     res
 217 }
 218
 219 pub(crate) fn signature_information(
 220     signature: FunctionSignature,
 221     concise: bool,
 222 ) -> lsp_types::SignatureInformation {
 223     let (label, documentation, params) = if concise {
 224         let mut params = signature.parameters;
 225         if signature.has_self_param {
 226             params.remove(0);
 227         }
 228         (params.join(", "), None, params)
 229     } else {
 230         (signature.to_string(), signature.doc.map(documentation), signature.parameters)
 231     };
 232
 233     let parameters: Vec<lsp_types::ParameterInformation> = params
 234         .into_iter()
 235         .map(|param| lsp_types::ParameterInformation {
 236             label: lsp_types::ParameterLabel::Simple(param),
 237             documentation: None,
 238         })
 239         .collect();
 240
 241     lsp_types::SignatureInformation { label, documentation, parameters: Some(parameters) }
 242 }
 243
 244 pub(crate) fn inlay_int(line_index: &LineIndex, inlay_hint: InlayHint) -> lsp_ext::InlayHint {
 245     lsp_ext::InlayHint {
 246         label: inlay_hint.label.to_string(),
 247         range: range(line_index, inlay_hint.range),
 248         kind: match inlay_hint.kind {
 249             InlayKind::ParameterHint => lsp_ext::InlayKind::ParameterHint,
 250             InlayKind::TypeHint => lsp_ext::InlayKind::TypeHint,
 251             InlayKind::ChainingHint => lsp_ext::InlayKind::ChainingHint,
 252         },
 253     }
 254 }
 255
 256 pub(crate) fn semantic_tokens(
 257     text: &str,
 258     line_index: &LineIndex,
 259     highlights: Vec<HighlightedRange>,
 260 ) -> lsp_types::SemanticTokens {
 261     let mut builder = semantic_tokens::SemanticTokensBuilder::default();
 262
 263     for highlight_range in highlights {
 264         let (type_, mods) = semantic_token_type_and_modifiers(highlight_range.highlight);
 265         let token_index = semantic_tokens::type_index(type_);
 266         let modifier_bitset = mods.0;
 267
 268         for mut text_range in line_index.lines(highlight_range.range) {
 269             if text[text_range].ends_with('\n') {
 270                 text_range =
 271                     TextRange::new(text_range.start(), text_range.end() - TextSize::of('\n'));
 272             }
 273             let range = range(&line_index, text_range);
 274             builder.push(range, token_index, modifier_bitset);
 275         }
 276     }
 277
 278     builder.build()
 279 }
 280
 281 fn semantic_token_type_and_modifiers(
 282     highlight: Highlight,
 283 ) -> (lsp_types::SemanticTokenType, semantic_tokens::ModifierSet) {
 284     let mut mods = semantic_tokens::ModifierSet::default();
 285     let type_ = match highlight.tag {
 286         HighlightTag::Struct => lsp_types::SemanticTokenType::STRUCT,
 287         HighlightTag::Enum => lsp_types::SemanticTokenType::ENUM,
 288         HighlightTag::Union => semantic_tokens::UNION,
 289         HighlightTag::TypeAlias => semantic_tokens::TYPE_ALIAS,
 290         HighlightTag::Trait => lsp_types::SemanticTokenType::INTERFACE,
 291         HighlightTag::BuiltinType => semantic_tokens::BUILTIN_TYPE,
 292         HighlightTag::SelfKeyword => semantic_tokens::SELF_KEYWORD,
 293         HighlightTag::SelfType => lsp_types::SemanticTokenType::TYPE,
 294         HighlightTag::Field => lsp_types::SemanticTokenType::PROPERTY,
 295         HighlightTag::Function => lsp_types::SemanticTokenType::FUNCTION,
 296         HighlightTag::Module => lsp_types::SemanticTokenType::NAMESPACE,
 297         HighlightTag::Constant => {
 298             mods |= semantic_tokens::CONSTANT;
 299             mods |= lsp_types::SemanticTokenModifier::STATIC;
 300             lsp_types::SemanticTokenType::VARIABLE
 301         }
 302         HighlightTag::Static => {
 303             mods |= lsp_types::SemanticTokenModifier::STATIC;
 304             lsp_types::SemanticTokenType::VARIABLE
 305         }
 306         HighlightTag::EnumVariant => semantic_tokens::ENUM_MEMBER,
 307         HighlightTag::Macro => lsp_types::SemanticTokenType::MACRO,
 308         HighlightTag::Local => lsp_types::SemanticTokenType::VARIABLE,
 309         HighlightTag::TypeParam => lsp_types::SemanticTokenType::TYPE_PARAMETER,
 310         HighlightTag::Lifetime => semantic_tokens::LIFETIME,
 311         HighlightTag::ByteLiteral | HighlightTag::NumericLiteral => {
 312             lsp_types::SemanticTokenType::NUMBER
 313         }
 314         HighlightTag::BoolLiteral => semantic_tokens::BOOLEAN,
 315         HighlightTag::CharLiteral | HighlightTag::StringLiteral => {
 316             lsp_types::SemanticTokenType::STRING
 317         }
 318         HighlightTag::Comment => lsp_types::SemanticTokenType::COMMENT,
 319         HighlightTag::Attribute => semantic_tokens::ATTRIBUTE,
 320         HighlightTag::Keyword => lsp_types::SemanticTokenType::KEYWORD,
 321         HighlightTag::UnresolvedReference => semantic_tokens::UNRESOLVED_REFERENCE,
 322         HighlightTag::FormatSpecifier => semantic_tokens::FORMAT_SPECIFIER,
 323         HighlightTag::Operator => lsp_types::SemanticTokenType::OPERATOR,
 324     };
 325
 326     for modifier in highlight.modifiers.iter() {
 327         let modifier = match modifier {
 328             HighlightModifier::Attribute => semantic_tokens::ATTRIBUTE_MODIFIER,
 329             HighlightModifier::Definition => lsp_types::SemanticTokenModifier::DECLARATION,
 330             HighlightModifier::ControlFlow => semantic_tokens::CONTROL_FLOW,
 331             HighlightModifier::Mutable => semantic_tokens::MUTABLE,
 332             HighlightModifier::Unsafe => semantic_tokens::UNSAFE,
 333         };
 334         mods |= modifier;
 335     }
 336
 337     (type_, mods)
 338 }
 339
 340 pub(crate) fn folding_range(
 341     text: &str,
 342     line_index: &LineIndex,
 343     line_folding_only: bool,
 344     fold: Fold,
 345 ) -> lsp_types::FoldingRange {
 346     let kind = match fold.kind {
 347         FoldKind::Comment => Some(lsp_types::FoldingRangeKind::Comment),
 348         FoldKind::Imports => Some(lsp_types::FoldingRangeKind::Imports),
 349         FoldKind::Mods | FoldKind::Block => None,
 350     };
 351
 352     let range = range(line_index, fold.range);
 353
 354     if line_folding_only {
 355         // Clients with line_folding_only == true (such as VSCode) will fold the whole end line
 356         // even if it contains text not in the folding range. To prevent that we exclude
 357         // range.end.line from the folding region if there is more text after range.end
 358         // on the same line.
 359         let has_more_text_on_end_line = text[TextRange::new(fold.range.end(), TextSize::of(text))]
 360             .chars()
 361             .take_while(|it| *it != '\n')
 362             .any(|it| !it.is_whitespace());
 363
 364         let end_line = if has_more_text_on_end_line {
 365             range.end.line.saturating_sub(1)
 366         } else {
 367             range.end.line
 368         };
 369
 370         lsp_types::FoldingRange {
 371             start_line: range.start.line,
 372             start_character: None,
 373             end_line,
 374             end_character: None,
 375             kind,
 376         }
 377     } else {
 378         lsp_types::FoldingRange {
 379             start_line: range.start.line,
 380             start_character: Some(range.start.character),
 381             end_line: range.end.line,
 382             end_character: Some(range.end.character),
 383             kind,
 384         }
 385     }
 386 }
 387
 388 pub(crate) fn url(snap: &GlobalStateSnapshot, file_id: FileId) -> Result<lsp_types::Url> {
 389     snap.file_id_to_uri(file_id)
 390 }
 391
 392 pub(crate) fn versioned_text_document_identifier(
 393     snap: &GlobalStateSnapshot,
 394     file_id: FileId,
 395     version: Option<i64>,
 396 ) -> Result<lsp_types::VersionedTextDocumentIdentifier> {
 397     let res = lsp_types::VersionedTextDocumentIdentifier { uri: url(snap, file_id)?, version };
 398     Ok(res)
 399 }
 400
 401 pub(crate) fn location(
 402     snap: &GlobalStateSnapshot,
 403     frange: FileRange,
 404 ) -> Result<lsp_types::Location> {
 405     let url = url(snap, frange.file_id)?;
 406     let line_index = snap.analysis().file_line_index(frange.file_id)?;
 407     let range = range(&line_index, frange.range);
 408     let loc = lsp_types::Location::new(url, range);
 409     Ok(loc)
 410 }
 411
 412 pub(crate) fn location_link(
 413     snap: &GlobalStateSnapshot,
 414     src: Option<FileRange>,
 415     target: NavigationTarget,
 416 ) -> Result<lsp_types::LocationLink> {
 417     let origin_selection_range = match src {
 418         Some(src) => {
 419             let line_index = snap.analysis().file_line_index(src.file_id)?;
 420             let range = range(&line_index, src.range);
 421             Some(range)
 422         }
 423         None => None,
 424     };
 425     let (target_uri, target_range, target_selection_range) = location_info(snap, target)?;
 426     let res = lsp_types::LocationLink {
 427         origin_selection_range,
 428         target_uri,
 429         target_range,
 430         target_selection_range,
 431     };
 432     Ok(res)
 433 }
 434
 435 fn location_info(
 436     snap: &GlobalStateSnapshot,
 437     target: NavigationTarget,
 438 ) -> Result<(lsp_types::Url, lsp_types::Range, lsp_types::Range)> {
 439     let line_index = snap.analysis().file_line_index(target.file_id())?;
 440
 441     let target_uri = url(snap, target.file_id())?;
 442     let target_range = range(&line_index, target.full_range());
 443     let target_selection_range =
 444         target.focus_range().map(|it| range(&line_index, it)).unwrap_or(target_range);
 445     Ok((target_uri, target_range, target_selection_range))
 446 }
 447
 448 pub(crate) fn goto_definition_response(
 449     snap: &GlobalStateSnapshot,
 450     src: Option<FileRange>,
 451     targets: Vec<NavigationTarget>,
 452 ) -> Result<lsp_types::GotoDefinitionResponse> {
 453     if snap.config.client_caps.location_link {
 454         let links = targets
 455             .into_iter()
 456             .map(|nav| location_link(snap, src, nav))
 457             .collect::<Result<Vec<_>>>()?;
 458         Ok(links.into())
 459     } else {
 460         let locations = targets
 461             .into_iter()
 462             .map(|nav| {
 463                 location(
 464                     snap,
 465                     FileRange {
 466                         file_id: nav.file_id(),
 467                         range: nav.focus_range().unwrap_or(nav.range()),
 468                     },
 469                 )
 470             })
 471             .collect::<Result<Vec<_>>>()?;
 472         Ok(locations.into())
 473     }
 474 }
 475
 476 pub(crate) fn snippet_text_document_edit(
 477     snap: &GlobalStateSnapshot,
 478     is_snippet: bool,
 479     source_file_edit: SourceFileEdit,
 480 ) -> Result<lsp_ext::SnippetTextDocumentEdit> {
 481     let text_document = versioned_text_document_identifier(snap, source_file_edit.file_id, None)?;
 482     let line_index = snap.analysis().file_line_index(source_file_edit.file_id)?;
 483     let line_endings = snap.file_line_endings(source_file_edit.file_id);
 484     let edits = source_file_edit
 485         .edit
 486         .into_iter()
 487         .map(|it| snippet_text_edit(&line_index, line_endings, is_snippet, it))
 488         .collect();
 489     Ok(lsp_ext::SnippetTextDocumentEdit { text_document, edits })
 490 }
 491
 492 pub(crate) fn resource_op(
 493     snap: &GlobalStateSnapshot,
 494     file_system_edit: FileSystemEdit,
 495 ) -> Result<lsp_types::ResourceOp> {
 496     let res = match file_system_edit {
 497         FileSystemEdit::CreateFile { source_root, path } => {
 498             let uri = snap.path_to_uri(source_root, &path)?;
 499             lsp_types::ResourceOp::Create(lsp_types::CreateFile { uri, options: None })
 500         }
 501         FileSystemEdit::MoveFile { src, dst_source_root, dst_path } => {
 502             let old_uri = snap.file_id_to_uri(src)?;
 503             let new_uri = snap.path_to_uri(dst_source_root, &dst_path)?;
 504             lsp_types::ResourceOp::Rename(lsp_types::RenameFile { old_uri, new_uri, options: None })
 505         }
 506     };
 507     Ok(res)
 508 }
 509
 510 pub(crate) fn snippet_workspace_edit(
 511     snap: &GlobalStateSnapshot,
 512     source_change: SourceChange,
 513 ) -> Result<lsp_ext::SnippetWorkspaceEdit> {
 514     let mut document_changes: Vec<lsp_ext::SnippetDocumentChangeOperation> = Vec::new();
 515     for op in source_change.file_system_edits {
 516         let op = resource_op(&snap, op)?;
 517         document_changes.push(lsp_ext::SnippetDocumentChangeOperation::Op(op));
 518     }
 519     for edit in source_change.source_file_edits {
 520         let edit = snippet_text_document_edit(&snap, source_change.is_snippet, edit)?;
 521         document_changes.push(lsp_ext::SnippetDocumentChangeOperation::Edit(edit));
 522     }
 523     let workspace_edit =
 524         lsp_ext::SnippetWorkspaceEdit { changes: None, document_changes: Some(document_changes) };
 525     Ok(workspace_edit)
 526 }
 527
 528 pub(crate) fn workspace_edit(
 529     snap: &GlobalStateSnapshot,
 530     source_change: SourceChange,
 531 ) -> Result<lsp_types::WorkspaceEdit> {
 532     assert!(!source_change.is_snippet);
 533     snippet_workspace_edit(snap, source_change).map(|it| it.into())
 534 }
 535
 536 impl From<lsp_ext::SnippetWorkspaceEdit> for lsp_types::WorkspaceEdit {
 537     fn from(snippet_workspace_edit: lsp_ext::SnippetWorkspaceEdit) -> lsp_types::WorkspaceEdit {
 538         lsp_types::WorkspaceEdit {
 539             changes: None,
 540             document_changes: snippet_workspace_edit.document_changes.map(|changes| {
 541                 lsp_types::DocumentChanges::Operations(
 542                     changes
 543                         .into_iter()
 544                         .map(|change| match change {
 545                             lsp_ext::SnippetDocumentChangeOperation::Op(op) => {
 546                                 lsp_types::DocumentChangeOperation::Op(op)
 547                             }
 548                             lsp_ext::SnippetDocumentChangeOperation::Edit(edit) => {
 549                                 lsp_types::DocumentChangeOperation::Edit(
 550                                     lsp_types::TextDocumentEdit {
 551                                         text_document: edit.text_document,
 552                                         edits: edit
 553                                             .edits
 554                                             .into_iter()
 555                                             .map(|edit| lsp_types::TextEdit {
 556                                                 range: edit.range,
 557                                                 new_text: edit.new_text,
 558                                             })
 559                                             .collect(),
 560                                     },
 561                                 )
 562                             }
 563                         })
 564                         .collect(),
 565                 )
 566             }),
 567         }
 568     }
 569 }
 570
 571 pub fn call_hierarchy_item(
 572     snap: &GlobalStateSnapshot,
 573     target: NavigationTarget,
 574 ) -> Result<lsp_types::CallHierarchyItem> {
 575     let name = target.name().to_string();
 576     let detail = target.description().map(|it| it.to_string());
 577     let kind = symbol_kind(target.kind());
 578     let (uri, range, selection_range) = location_info(snap, target)?;
 579     Ok(lsp_types::CallHierarchyItem { name, kind, tags: None, detail, uri, range, selection_range })
 580 }
 581
 582 #[cfg(test)]
 583 mod tests {
 584     use test_utils::extract_ranges;
 585
 586     use super::*;
 587
 588     #[test]
 589     fn conv_fold_line_folding_only_fixup() {
 590         let text = r#"<fold>mod a;
 591 mod b;
 592 mod c;</fold>
 593
 594 fn main() <fold>{
 595     if cond <fold>{
 596         a::do_a();
 597     }</fold> else <fold>{
 598         b::do_b();
 599     }</fold>
 600 }</fold>"#;
 601
 602         let (ranges, text) = extract_ranges(text, "fold");
 603         assert_eq!(ranges.len(), 4);
 604         let folds = vec![
 605             Fold { range: ranges[0], kind: FoldKind::Mods },
 606             Fold { range: ranges[1], kind: FoldKind::Block },
 607             Fold { range: ranges[2], kind: FoldKind::Block },
 608             Fold { range: ranges[3], kind: FoldKind::Block },
 609         ];
 610
 611         let line_index = LineIndex::new(&text);
 612         let converted: Vec<lsp_types::FoldingRange> =
 613             folds.into_iter().map(|it| folding_range(&text, &line_index, true, it)).collect();
 614
 615         let expected_lines = [(0, 2), (4, 10), (5, 6), (7, 9)];
 616         assert_eq!(converted.len(), expected_lines.len());
 617         for (folding_range, (start_line, end_line)) in converted.iter().zip(expected_lines.iter()) {
 618             assert_eq!(folding_range.start_line, *start_line);
 619             assert_eq!(folding_range.start_character, None);
 620             assert_eq!(folding_range.end_line, *end_line);
 621             assert_eq!(folding_range.end_character, None);
 622         }
 623     }
 624 }
 625
 626 pub(crate) fn unresolved_code_action(
 627     snap: &GlobalStateSnapshot,
 628     assist: Assist,
 629     index: usize,
 630 ) -> Result<lsp_ext::CodeAction> {
 631     let res = lsp_ext::CodeAction {
 632         title: assist.label,
 633         id: Some(format!("{}:{}", assist.id.0.to_owned(), index.to_string())),
 634         group: assist.group.filter(|_| snap.config.client_caps.code_action_group).map(|gr| gr.0),
 635         kind: Some(String::new()),
 636         edit: None,
 637         command: None,
 638     };
 639     Ok(res)
 640 }
 641
 642 pub(crate) fn resolved_code_action(
 643     snap: &GlobalStateSnapshot,
 644     assist: ResolvedAssist,
 645 ) -> Result<lsp_ext::CodeAction> {
 646     let change = assist.source_change;
 647     unresolved_code_action(snap, assist.assist, 0).and_then(|it| {
 648         Ok(lsp_ext::CodeAction {
 649             id: None,
 650             edit: Some(snippet_workspace_edit(snap, change)?),
 651             ..it
 652         })
 653     })
 654 }
 655
 656 pub(crate) fn runnable(
 657     snap: &GlobalStateSnapshot,
 658     file_id: FileId,
 659     runnable: Runnable,
 660 ) -> Result<lsp_ext::Runnable> {
 661     let spec = CargoTargetSpec::for_file(snap, file_id)?;
 662     let target = spec.as_ref().map(|s| s.target.clone());
 663     let (cargo_args, executable_args) =
 664         CargoTargetSpec::runnable_args(spec, &runnable.kind, &runnable.cfg_exprs)?;
 665     let label = runnable.label(target);
 666     let location = location_link(snap, None, runnable.nav)?;
 667
 668     Ok(lsp_ext::Runnable {
 669         label,
 670         location: Some(location),
 671         kind: lsp_ext::RunnableKind::Cargo,
 672         args: lsp_ext::CargoRunnable {
 673             workspace_root: snap.workspace_root_for(file_id).map(|root| root.to_owned()),
 674             cargo_args,
 675             executable_args,
 676         },
 677     })
 678 }