crates/rust-analyzer/src/to_proto.rs

   1 //! Conversion of rust-analyzer specific types to lsp_types equivalents.
   2 use std::{
   3     path::{self, Path},
   4     sync::atomic::{AtomicU32, Ordering},
   5 };
   6
   7 use ide::{
   8     Annotation, AnnotationKind, Assist, AssistKind, CallInfo, CompletionItem, CompletionItemKind,
   9     Documentation, FileId, FileRange, FileSystemEdit, Fold, FoldKind, Highlight, HlMod, HlPunct,
  10     HlRange, HlTag, Indel, InlayHint, InlayKind, InsertTextFormat, Markup, NavigationTarget,
  11     ReferenceAccess, RenameError, Runnable, Severity, SourceChange, TextEdit, TextRange, TextSize,
  12 };
  13 use ide_db::SymbolKind;
  14 use itertools::Itertools;
  15 use serde_json::to_value;
  16
  17 use crate::{
  18     cargo_target_spec::CargoTargetSpec,
  19     global_state::GlobalStateSnapshot,
  20     line_index::{LineEndings, LineIndex, OffsetEncoding},
  21     lsp_ext, semantic_tokens, Result,
  22 };
  23
  24 pub(crate) fn position(line_index: &LineIndex, offset: TextSize) -> lsp_types::Position {
  25     let line_col = line_index.index.line_col(offset);
  26     match line_index.encoding {
  27         OffsetEncoding::Utf8 => lsp_types::Position::new(line_col.line, line_col.col),
  28         OffsetEncoding::Utf16 => {
  29             let line_col = line_index.index.to_utf16(line_col);
  30             lsp_types::Position::new(line_col.line, line_col.col)
  31         }
  32     }
  33 }
  34
  35 pub(crate) fn range(line_index: &LineIndex, range: TextRange) -> lsp_types::Range {
  36     let start = position(line_index, range.start());
  37     let end = position(line_index, range.end());
  38     lsp_types::Range::new(start, end)
  39 }
  40
  41 pub(crate) fn symbol_kind(symbol_kind: SymbolKind) -> lsp_types::SymbolKind {
  42     match symbol_kind {
  43         SymbolKind::Function => lsp_types::SymbolKind::Function,
  44         SymbolKind::Struct => lsp_types::SymbolKind::Struct,
  45         SymbolKind::Enum => lsp_types::SymbolKind::Enum,
  46         SymbolKind::Variant => lsp_types::SymbolKind::EnumMember,
  47         SymbolKind::Trait => lsp_types::SymbolKind::Interface,
  48         SymbolKind::Macro => lsp_types::SymbolKind::Function,
  49         SymbolKind::Module => lsp_types::SymbolKind::Module,
  50         SymbolKind::TypeAlias | SymbolKind::TypeParam => lsp_types::SymbolKind::TypeParameter,
  51         SymbolKind::Field => lsp_types::SymbolKind::Field,
  52         SymbolKind::Static => lsp_types::SymbolKind::Constant,
  53         SymbolKind::Const => lsp_types::SymbolKind::Constant,
  54         SymbolKind::ConstParam => lsp_types::SymbolKind::Constant,
  55         SymbolKind::Impl => lsp_types::SymbolKind::Object,
  56         SymbolKind::Local
  57         | SymbolKind::SelfParam
  58         | SymbolKind::LifetimeParam
  59         | SymbolKind::ValueParam
  60         | SymbolKind::Label => lsp_types::SymbolKind::Variable,
  61         SymbolKind::Union => lsp_types::SymbolKind::Struct,
  62     }
  63 }
  64
  65 pub(crate) fn document_highlight_kind(
  66     reference_access: ReferenceAccess,
  67 ) -> lsp_types::DocumentHighlightKind {
  68     match reference_access {
  69         ReferenceAccess::Read => lsp_types::DocumentHighlightKind::Read,
  70         ReferenceAccess::Write => lsp_types::DocumentHighlightKind::Write,
  71     }
  72 }
  73
  74 pub(crate) fn diagnostic_severity(severity: Severity) -> lsp_types::DiagnosticSeverity {
  75     match severity {
  76         Severity::Error => lsp_types::DiagnosticSeverity::Error,
  77         Severity::WeakWarning => lsp_types::DiagnosticSeverity::Hint,
  78     }
  79 }
  80
  81 pub(crate) fn documentation(documentation: Documentation) -> lsp_types::Documentation {
  82     let value = crate::markdown::format_docs(documentation.as_str());
  83     let markup_content = lsp_types::MarkupContent { kind: lsp_types::MarkupKind::Markdown, value };
  84     lsp_types::Documentation::MarkupContent(markup_content)
  85 }
  86
  87 pub(crate) fn insert_text_format(
  88     insert_text_format: InsertTextFormat,
  89 ) -> lsp_types::InsertTextFormat {
  90     match insert_text_format {
  91         InsertTextFormat::Snippet => lsp_types::InsertTextFormat::Snippet,
  92         InsertTextFormat::PlainText => lsp_types::InsertTextFormat::PlainText,
  93     }
  94 }
  95
  96 pub(crate) fn completion_item_kind(
  97     completion_item_kind: CompletionItemKind,
  98 ) -> lsp_types::CompletionItemKind {
  99     match completion_item_kind {
 100         CompletionItemKind::Attribute => lsp_types::CompletionItemKind::EnumMember,
 101         CompletionItemKind::Binding => lsp_types::CompletionItemKind::Variable,
 102         CompletionItemKind::BuiltinType => lsp_types::CompletionItemKind::Struct,
 103         CompletionItemKind::Keyword => lsp_types::CompletionItemKind::Keyword,
 104         CompletionItemKind::Method => lsp_types::CompletionItemKind::Method,
 105         CompletionItemKind::Snippet => lsp_types::CompletionItemKind::Snippet,
 106         CompletionItemKind::UnresolvedReference => lsp_types::CompletionItemKind::Reference,
 107         CompletionItemKind::SymbolKind(symbol) => match symbol {
 108             SymbolKind::Const => lsp_types::CompletionItemKind::Constant,
 109             SymbolKind::ConstParam => lsp_types::CompletionItemKind::TypeParameter,
 110             SymbolKind::Enum => lsp_types::CompletionItemKind::Enum,
 111             SymbolKind::Field => lsp_types::CompletionItemKind::Field,
 112             SymbolKind::Function => lsp_types::CompletionItemKind::Function,
 113             SymbolKind::Impl => lsp_types::CompletionItemKind::Text,
 114             SymbolKind::Label => lsp_types::CompletionItemKind::Variable,
 115             SymbolKind::LifetimeParam => lsp_types::CompletionItemKind::TypeParameter,
 116             SymbolKind::Local => lsp_types::CompletionItemKind::Variable,
 117             SymbolKind::Macro => lsp_types::CompletionItemKind::Method,
 118             SymbolKind::Module => lsp_types::CompletionItemKind::Module,
 119             SymbolKind::SelfParam => lsp_types::CompletionItemKind::Value,
 120             SymbolKind::Static => lsp_types::CompletionItemKind::Value,
 121             SymbolKind::Struct => lsp_types::CompletionItemKind::Struct,
 122             SymbolKind::Trait => lsp_types::CompletionItemKind::Interface,
 123             SymbolKind::TypeAlias => lsp_types::CompletionItemKind::Struct,
 124             SymbolKind::TypeParam => lsp_types::CompletionItemKind::TypeParameter,
 125             SymbolKind::Union => lsp_types::CompletionItemKind::Struct,
 126             SymbolKind::ValueParam => lsp_types::CompletionItemKind::Value,
 127             SymbolKind::Variant => lsp_types::CompletionItemKind::EnumMember,
 128         },
 129     }
 130 }
 131
 132 pub(crate) fn text_edit(line_index: &LineIndex, indel: Indel) -> lsp_types::TextEdit {
 133     let range = range(line_index, indel.delete);
 134     let new_text = match line_index.endings {
 135         LineEndings::Unix => indel.insert,
 136         LineEndings::Dos => indel.insert.replace('\n', "\r\n"),
 137     };
 138     lsp_types::TextEdit { range, new_text }
 139 }
 140
 141 pub(crate) fn snippet_text_edit(
 142     line_index: &LineIndex,
 143     is_snippet: bool,
 144     indel: Indel,
 145 ) -> lsp_ext::SnippetTextEdit {
 146     let text_edit = text_edit(line_index, indel);
 147     let insert_text_format =
 148         if is_snippet { Some(lsp_types::InsertTextFormat::Snippet) } else { None };
 149     lsp_ext::SnippetTextEdit {
 150         range: text_edit.range,
 151         new_text: text_edit.new_text,
 152         insert_text_format,
 153     }
 154 }
 155
 156 pub(crate) fn text_edit_vec(
 157     line_index: &LineIndex,
 158     text_edit: TextEdit,
 159 ) -> Vec<lsp_types::TextEdit> {
 160     text_edit.into_iter().map(|indel| self::text_edit(line_index, indel)).collect()
 161 }
 162
 163 pub(crate) fn snippet_text_edit_vec(
 164     line_index: &LineIndex,
 165     is_snippet: bool,
 166     text_edit: TextEdit,
 167 ) -> Vec<lsp_ext::SnippetTextEdit> {
 168     text_edit
 169         .into_iter()
 170         .map(|indel| self::snippet_text_edit(line_index, is_snippet, indel))
 171         .collect()
 172 }
 173
 174 pub(crate) fn completion_item(
 175     line_index: &LineIndex,
 176     item: CompletionItem,
 177 ) -> Vec<lsp_types::CompletionItem> {
 178     fn set_score(lsp_item: &mut lsp_types::CompletionItem, label: &str) {
 179         lsp_item.preselect = Some(true);
 180         // HACK: sort preselect items first
 181         lsp_item.sort_text = Some(format!(" {}", label));
 182     }
 183
 184     let mut additional_text_edits = Vec::new();
 185     let mut text_edit = None;
 186     // LSP does not allow arbitrary edits in completion, so we have to do a
 187     // non-trivial mapping here.
 188     let source_range = item.source_range();
 189     for indel in item.text_edit().iter() {
 190         if indel.delete.contains_range(source_range) {
 191             text_edit = Some(if indel.delete == source_range {
 192                 self::text_edit(line_index, indel.clone())
 193             } else {
 194                 assert!(source_range.end() == indel.delete.end());
 195                 let range1 = TextRange::new(indel.delete.start(), source_range.start());
 196                 let range2 = source_range;
 197                 let indel1 = Indel::replace(range1, String::new());
 198                 let indel2 = Indel::replace(range2, indel.insert.clone());
 199                 additional_text_edits.push(self::text_edit(line_index, indel1));
 200                 self::text_edit(line_index, indel2)
 201             })
 202         } else {
 203             assert!(source_range.intersect(indel.delete).is_none());
 204             let text_edit = self::text_edit(line_index, indel.clone());
 205             additional_text_edits.push(text_edit);
 206         }
 207     }
 208     let text_edit = text_edit.unwrap();
 209
 210     let mut lsp_item = lsp_types::CompletionItem {
 211         label: item.label().to_string(),
 212         detail: item.detail().map(|it| it.to_string()),
 213         filter_text: Some(item.lookup().to_string()),
 214         kind: item.kind().map(completion_item_kind),
 215         text_edit: Some(text_edit.into()),
 216         additional_text_edits: Some(additional_text_edits),
 217         documentation: item.documentation().map(documentation),
 218         deprecated: Some(item.deprecated()),
 219         ..Default::default()
 220     };
 221
 222     if item.score().is_some() {
 223         set_score(&mut lsp_item, item.label());
 224     }
 225
 226     if item.deprecated() {
 227         lsp_item.tags = Some(vec![lsp_types::CompletionItemTag::Deprecated])
 228     }
 229
 230     if item.trigger_call_info() {
 231         lsp_item.command = Some(command::trigger_parameter_hints());
 232     }
 233
 234     let mut res = match item.ref_match() {
 235         Some(mutability) => {
 236             let mut refed = lsp_item.clone();
 237             let label = format!("&{}{}", mutability.as_keyword_for_ref(), refed.label);
 238             set_score(&mut refed, &label);
 239             refed.label = label;
 240             vec![lsp_item, refed]
 241         }
 242         None => vec![lsp_item],
 243     };
 244
 245     for lsp_item in res.iter_mut() {
 246         lsp_item.insert_text_format = Some(insert_text_format(item.insert_text_format()));
 247     }
 248     res
 249 }
 250
 251 pub(crate) fn signature_help(
 252     call_info: CallInfo,
 253     concise: bool,
 254     label_offsets: bool,
 255 ) -> lsp_types::SignatureHelp {
 256     let (label, parameters) = match (concise, label_offsets) {
 257         (_, false) => {
 258             let params = call_info
 259                 .parameter_labels()
 260                 .map(|label| lsp_types::ParameterInformation {
 261                     label: lsp_types::ParameterLabel::Simple(label.to_string()),
 262                     documentation: None,
 263                 })
 264                 .collect::<Vec<_>>();
 265             let label =
 266                 if concise { call_info.parameter_labels().join(", ") } else { call_info.signature };
 267             (label, params)
 268         }
 269         (false, true) => {
 270             let params = call_info
 271                 .parameter_ranges()
 272                 .iter()
 273                 .map(|it| [u32::from(it.start()).into(), u32::from(it.end()).into()])
 274                 .map(|label_offsets| lsp_types::ParameterInformation {
 275                     label: lsp_types::ParameterLabel::LabelOffsets(label_offsets),
 276                     documentation: None,
 277                 })
 278                 .collect::<Vec<_>>();
 279             (call_info.signature, params)
 280         }
 281         (true, true) => {
 282             let mut params = Vec::new();
 283             let mut label = String::new();
 284             let mut first = true;
 285             for param in call_info.parameter_labels() {
 286                 if !first {
 287                     label.push_str(", ");
 288                 }
 289                 first = false;
 290                 let start = label.len() as u32;
 291                 label.push_str(param);
 292                 let end = label.len() as u32;
 293                 params.push(lsp_types::ParameterInformation {
 294                     label: lsp_types::ParameterLabel::LabelOffsets([start, end]),
 295                     documentation: None,
 296                 });
 297             }
 298
 299             (label, params)
 300         }
 301     };
 302
 303     let documentation = if concise {
 304         None
 305     } else {
 306         call_info.doc.map(|doc| {
 307             lsp_types::Documentation::MarkupContent(lsp_types::MarkupContent {
 308                 kind: lsp_types::MarkupKind::Markdown,
 309                 value: doc,
 310             })
 311         })
 312     };
 313
 314     let active_parameter = call_info.active_parameter.map(|it| it as u32);
 315
 316     let signature = lsp_types::SignatureInformation {
 317         label,
 318         documentation,
 319         parameters: Some(parameters),
 320         active_parameter,
 321     };
 322     lsp_types::SignatureHelp {
 323         signatures: vec![signature],
 324         active_signature: None,
 325         active_parameter,
 326     }
 327 }
 328
 329 pub(crate) fn inlay_hint(line_index: &LineIndex, inlay_hint: InlayHint) -> lsp_ext::InlayHint {
 330     lsp_ext::InlayHint {
 331         label: inlay_hint.label.to_string(),
 332         range: range(line_index, inlay_hint.range),
 333         kind: match inlay_hint.kind {
 334             InlayKind::ParameterHint => lsp_ext::InlayKind::ParameterHint,
 335             InlayKind::TypeHint => lsp_ext::InlayKind::TypeHint,
 336             InlayKind::ChainingHint => lsp_ext::InlayKind::ChainingHint,
 337         },
 338     }
 339 }
 340
 341 static TOKEN_RESULT_COUNTER: AtomicU32 = AtomicU32::new(1);
 342
 343 pub(crate) fn semantic_tokens(
 344     text: &str,
 345     line_index: &LineIndex,
 346     highlights: Vec<HlRange>,
 347 ) -> lsp_types::SemanticTokens {
 348     let id = TOKEN_RESULT_COUNTER.fetch_add(1, Ordering::SeqCst).to_string();
 349     let mut builder = semantic_tokens::SemanticTokensBuilder::new(id);
 350
 351     for highlight_range in highlights {
 352         if highlight_range.highlight.is_empty() {
 353             continue;
 354         }
 355         let (type_, mods) = semantic_token_type_and_modifiers(highlight_range.highlight);
 356         let token_index = semantic_tokens::type_index(type_);
 357         let modifier_bitset = mods.0;
 358
 359         for mut text_range in line_index.index.lines(highlight_range.range) {
 360             if text[text_range].ends_with('\n') {
 361                 text_range =
 362                     TextRange::new(text_range.start(), text_range.end() - TextSize::of('\n'));
 363             }
 364             let range = range(&line_index, text_range);
 365             builder.push(range, token_index, modifier_bitset);
 366         }
 367     }
 368
 369     builder.build()
 370 }
 371
 372 pub(crate) fn semantic_token_delta(
 373     previous: &lsp_types::SemanticTokens,
 374     current: &lsp_types::SemanticTokens,
 375 ) -> lsp_types::SemanticTokensDelta {
 376     let result_id = current.result_id.clone();
 377     let edits = semantic_tokens::diff_tokens(&previous.data, &current.data);
 378     lsp_types::SemanticTokensDelta { result_id, edits }
 379 }
 380
 381 fn semantic_token_type_and_modifiers(
 382     highlight: Highlight,
 383 ) -> (lsp_types::SemanticTokenType, semantic_tokens::ModifierSet) {
 384     let mut mods = semantic_tokens::ModifierSet::default();
 385     let type_ = match highlight.tag {
 386         HlTag::Symbol(symbol) => match symbol {
 387             SymbolKind::Module => lsp_types::SemanticTokenType::NAMESPACE,
 388             SymbolKind::Impl => lsp_types::SemanticTokenType::TYPE,
 389             SymbolKind::Field => lsp_types::SemanticTokenType::PROPERTY,
 390             SymbolKind::TypeParam => lsp_types::SemanticTokenType::TYPE_PARAMETER,
 391             SymbolKind::ConstParam => semantic_tokens::CONST_PARAMETER,
 392             SymbolKind::LifetimeParam => semantic_tokens::LIFETIME,
 393             SymbolKind::Label => semantic_tokens::LABEL,
 394             SymbolKind::ValueParam => lsp_types::SemanticTokenType::PARAMETER,
 395             SymbolKind::SelfParam => semantic_tokens::SELF_KEYWORD,
 396             SymbolKind::Local => lsp_types::SemanticTokenType::VARIABLE,
 397             SymbolKind::Function => {
 398                 if highlight.mods.contains(HlMod::Associated) {
 399                     lsp_types::SemanticTokenType::METHOD
 400                 } else {
 401                     lsp_types::SemanticTokenType::FUNCTION
 402                 }
 403             }
 404             SymbolKind::Const => {
 405                 mods |= semantic_tokens::CONSTANT;
 406                 mods |= lsp_types::SemanticTokenModifier::STATIC;
 407                 lsp_types::SemanticTokenType::VARIABLE
 408             }
 409             SymbolKind::Static => {
 410                 mods |= lsp_types::SemanticTokenModifier::STATIC;
 411                 lsp_types::SemanticTokenType::VARIABLE
 412             }
 413             SymbolKind::Struct => lsp_types::SemanticTokenType::STRUCT,
 414             SymbolKind::Enum => lsp_types::SemanticTokenType::ENUM,
 415             SymbolKind::Variant => lsp_types::SemanticTokenType::ENUM_MEMBER,
 416             SymbolKind::Union => semantic_tokens::UNION,
 417             SymbolKind::TypeAlias => semantic_tokens::TYPE_ALIAS,
 418             SymbolKind::Trait => lsp_types::SemanticTokenType::INTERFACE,
 419             SymbolKind::Macro => lsp_types::SemanticTokenType::MACRO,
 420         },
 421         HlTag::BuiltinType => semantic_tokens::BUILTIN_TYPE,
 422         HlTag::None => semantic_tokens::GENERIC,
 423         HlTag::ByteLiteral | HlTag::NumericLiteral => lsp_types::SemanticTokenType::NUMBER,
 424         HlTag::BoolLiteral => semantic_tokens::BOOLEAN,
 425         HlTag::StringLiteral => lsp_types::SemanticTokenType::STRING,
 426         HlTag::CharLiteral => semantic_tokens::CHAR_LITERAL,
 427         HlTag::Comment => lsp_types::SemanticTokenType::COMMENT,
 428         HlTag::Attribute => semantic_tokens::ATTRIBUTE,
 429         HlTag::Keyword => lsp_types::SemanticTokenType::KEYWORD,
 430         HlTag::UnresolvedReference => semantic_tokens::UNRESOLVED_REFERENCE,
 431         HlTag::FormatSpecifier => semantic_tokens::FORMAT_SPECIFIER,
 432         HlTag::Operator => lsp_types::SemanticTokenType::OPERATOR,
 433         HlTag::EscapeSequence => semantic_tokens::ESCAPE_SEQUENCE,
 434         HlTag::Punctuation(punct) => match punct {
 435             HlPunct::Bracket => semantic_tokens::BRACKET,
 436             HlPunct::Brace => semantic_tokens::BRACE,
 437             HlPunct::Parenthesis => semantic_tokens::PARENTHESIS,
 438             HlPunct::Angle => semantic_tokens::ANGLE,
 439             HlPunct::Comma => semantic_tokens::COMMA,
 440             HlPunct::Dot => semantic_tokens::DOT,
 441             HlPunct::Colon => semantic_tokens::COLON,
 442             HlPunct::Semi => semantic_tokens::SEMICOLON,
 443             HlPunct::Other => semantic_tokens::PUNCTUATION,
 444         },
 445     };
 446
 447     for modifier in highlight.mods.iter() {
 448         let modifier = match modifier {
 449             HlMod::Attribute => semantic_tokens::ATTRIBUTE_MODIFIER,
 450             HlMod::Definition => lsp_types::SemanticTokenModifier::DECLARATION,
 451             HlMod::Documentation => lsp_types::SemanticTokenModifier::DOCUMENTATION,
 452             HlMod::Injected => semantic_tokens::INJECTED,
 453             HlMod::ControlFlow => semantic_tokens::CONTROL_FLOW,
 454             HlMod::Mutable => semantic_tokens::MUTABLE,
 455             HlMod::Consuming => semantic_tokens::CONSUMING,
 456             HlMod::Unsafe => semantic_tokens::UNSAFE,
 457             HlMod::Callable => semantic_tokens::CALLABLE,
 458             HlMod::Static => lsp_types::SemanticTokenModifier::STATIC,
 459             HlMod::Associated => continue,
 460         };
 461         mods |= modifier;
 462     }
 463
 464     (type_, mods)
 465 }
 466
 467 pub(crate) fn folding_range(
 468     text: &str,
 469     line_index: &LineIndex,
 470     line_folding_only: bool,
 471     fold: Fold,
 472 ) -> lsp_types::FoldingRange {
 473     let kind = match fold.kind {
 474         FoldKind::Comment => Some(lsp_types::FoldingRangeKind::Comment),
 475         FoldKind::Imports => Some(lsp_types::FoldingRangeKind::Imports),
 476         FoldKind::Mods | FoldKind::Block | FoldKind::ArgList | FoldKind::Region => None,
 477     };
 478
 479     let range = range(line_index, fold.range);
 480
 481     if line_folding_only {
 482         // Clients with line_folding_only == true (such as VSCode) will fold the whole end line
 483         // even if it contains text not in the folding range. To prevent that we exclude
 484         // range.end.line from the folding region if there is more text after range.end
 485         // on the same line.
 486         let has_more_text_on_end_line = text[TextRange::new(fold.range.end(), TextSize::of(text))]
 487             .chars()
 488             .take_while(|it| *it != '\n')
 489             .any(|it| !it.is_whitespace());
 490
 491         let end_line = if has_more_text_on_end_line {
 492             range.end.line.saturating_sub(1)
 493         } else {
 494             range.end.line
 495         };
 496
 497         lsp_types::FoldingRange {
 498             start_line: range.start.line,
 499             start_character: None,
 500             end_line,
 501             end_character: None,
 502             kind,
 503         }
 504     } else {
 505         lsp_types::FoldingRange {
 506             start_line: range.start.line,
 507             start_character: Some(range.start.character),
 508             end_line: range.end.line,
 509             end_character: Some(range.end.character),
 510             kind,
 511         }
 512     }
 513 }
 514
 515 pub(crate) fn url(snap: &GlobalStateSnapshot, file_id: FileId) -> lsp_types::Url {
 516     snap.file_id_to_url(file_id)
 517 }
 518
 519 /// Returns a `Url` object from a given path, will lowercase drive letters if present.
 520 /// This will only happen when processing windows paths.
 521 ///
 522 /// When processing non-windows path, this is essentially the same as `Url::from_file_path`.
 523 pub(crate) fn url_from_abs_path(path: &Path) -> lsp_types::Url {
 524     assert!(path.is_absolute());
 525     let url = lsp_types::Url::from_file_path(path).unwrap();
 526     match path.components().next() {
 527         Some(path::Component::Prefix(prefix))
 528             if matches!(prefix.kind(), path::Prefix::Disk(_) | path::Prefix::VerbatimDisk(_)) =>
 529         {
 530             // Need to lowercase driver letter
 531         }
 532         _ => return url,
 533     }
 534
 535     let driver_letter_range = {
 536         let (scheme, drive_letter, _rest) = match url.as_str().splitn(3, ':').collect_tuple() {
 537             Some(it) => it,
 538             None => return url,
 539         };
 540         let start = scheme.len() + ':'.len_utf8();
 541         start..(start + drive_letter.len())
 542     };
 543
 544     // Note: lowercasing the `path` itself doesn't help, the `Url::parse`
 545     // machinery *also* canonicalizes the drive letter. So, just massage the
 546     // string in place.
 547     let mut url = url.into_string();
 548     url[driver_letter_range].make_ascii_lowercase();
 549     lsp_types::Url::parse(&url).unwrap()
 550 }
 551
 552 pub(crate) fn optional_versioned_text_document_identifier(
 553     snap: &GlobalStateSnapshot,
 554     file_id: FileId,
 555 ) -> lsp_types::OptionalVersionedTextDocumentIdentifier {
 556     let url = url(snap, file_id);
 557     let version = snap.url_file_version(&url);
 558     lsp_types::OptionalVersionedTextDocumentIdentifier { uri: url, version }
 559 }
 560
 561 pub(crate) fn location(
 562     snap: &GlobalStateSnapshot,
 563     frange: FileRange,
 564 ) -> Result<lsp_types::Location> {
 565     let url = url(snap, frange.file_id);
 566     let line_index = snap.file_line_index(frange.file_id)?;
 567     let range = range(&line_index, frange.range);
 568     let loc = lsp_types::Location::new(url, range);
 569     Ok(loc)
 570 }
 571
 572 /// Perefer using `location_link`, if the client has the cap.
 573 pub(crate) fn location_from_nav(
 574     snap: &GlobalStateSnapshot,
 575     nav: NavigationTarget,
 576 ) -> Result<lsp_types::Location> {
 577     let url = url(snap, nav.file_id);
 578     let line_index = snap.file_line_index(nav.file_id)?;
 579     let range = range(&line_index, nav.full_range);
 580     let loc = lsp_types::Location::new(url, range);
 581     Ok(loc)
 582 }
 583
 584 pub(crate) fn location_link(
 585     snap: &GlobalStateSnapshot,
 586     src: Option<FileRange>,
 587     target: NavigationTarget,
 588 ) -> Result<lsp_types::LocationLink> {
 589     let origin_selection_range = match src {
 590         Some(src) => {
 591             let line_index = snap.file_line_index(src.file_id)?;
 592             let range = range(&line_index, src.range);
 593             Some(range)
 594         }
 595         None => None,
 596     };
 597     let (target_uri, target_range, target_selection_range) = location_info(snap, target)?;
 598     let res = lsp_types::LocationLink {
 599         origin_selection_range,
 600         target_uri,
 601         target_range,
 602         target_selection_range,
 603     };
 604     Ok(res)
 605 }
 606
 607 fn location_info(
 608     snap: &GlobalStateSnapshot,
 609     target: NavigationTarget,
 610 ) -> Result<(lsp_types::Url, lsp_types::Range, lsp_types::Range)> {
 611     let line_index = snap.file_line_index(target.file_id)?;
 612
 613     let target_uri = url(snap, target.file_id);
 614     let target_range = range(&line_index, target.full_range);
 615     let target_selection_range =
 616         target.focus_range.map(|it| range(&line_index, it)).unwrap_or(target_range);
 617     Ok((target_uri, target_range, target_selection_range))
 618 }
 619
 620 pub(crate) fn goto_definition_response(
 621     snap: &GlobalStateSnapshot,
 622     src: Option<FileRange>,
 623     targets: Vec<NavigationTarget>,
 624 ) -> Result<lsp_types::GotoDefinitionResponse> {
 625     if snap.config.location_link() {
 626         let links = targets
 627             .into_iter()
 628             .map(|nav| location_link(snap, src, nav))
 629             .collect::<Result<Vec<_>>>()?;
 630         Ok(links.into())
 631     } else {
 632         let locations = targets
 633             .into_iter()
 634             .map(|nav| {
 635                 location(snap, FileRange { file_id: nav.file_id, range: nav.focus_or_full_range() })
 636             })
 637             .collect::<Result<Vec<_>>>()?;
 638         Ok(locations.into())
 639     }
 640 }
 641
 642 pub(crate) fn snippet_text_document_edit(
 643     snap: &GlobalStateSnapshot,
 644     is_snippet: bool,
 645     file_id: FileId,
 646     edit: TextEdit,
 647 ) -> Result<lsp_ext::SnippetTextDocumentEdit> {
 648     let text_document = optional_versioned_text_document_identifier(snap, file_id);
 649     let line_index = snap.file_line_index(file_id)?;
 650     let edits = edit.into_iter().map(|it| snippet_text_edit(&line_index, is_snippet, it)).collect();
 651     Ok(lsp_ext::SnippetTextDocumentEdit { text_document, edits })
 652 }
 653
 654 pub(crate) fn snippet_text_document_ops(
 655     snap: &GlobalStateSnapshot,
 656     file_system_edit: FileSystemEdit,
 657 ) -> Vec<lsp_ext::SnippetDocumentChangeOperation> {
 658     let mut ops = Vec::new();
 659     match file_system_edit {
 660         FileSystemEdit::CreateFile { dst, initial_contents } => {
 661             let uri = snap.anchored_path(&dst);
 662             let create_file = lsp_types::ResourceOp::Create(lsp_types::CreateFile {
 663                 uri: uri.clone(),
 664                 options: None,
 665                 annotation_id: None,
 666             });
 667             ops.push(lsp_ext::SnippetDocumentChangeOperation::Op(create_file));
 668             if !initial_contents.is_empty() {
 669                 let text_document =
 670                     lsp_types::OptionalVersionedTextDocumentIdentifier { uri, version: None };
 671                 let text_edit = lsp_ext::SnippetTextEdit {
 672                     range: lsp_types::Range::default(),
 673                     new_text: initial_contents,
 674                     insert_text_format: Some(lsp_types::InsertTextFormat::PlainText),
 675                 };
 676                 let edit_file =
 677                     lsp_ext::SnippetTextDocumentEdit { text_document, edits: vec![text_edit] };
 678                 ops.push(lsp_ext::SnippetDocumentChangeOperation::Edit(edit_file));
 679             }
 680         }
 681         FileSystemEdit::MoveFile { src, dst } => {
 682             let old_uri = snap.file_id_to_url(src);
 683             let new_uri = snap.anchored_path(&dst);
 684             let rename_file = lsp_types::ResourceOp::Rename(lsp_types::RenameFile {
 685                 old_uri,
 686                 new_uri,
 687                 options: None,
 688                 annotation_id: None,
 689             });
 690             ops.push(lsp_ext::SnippetDocumentChangeOperation::Op(rename_file))
 691         }
 692     }
 693     ops
 694 }
 695
 696 pub(crate) fn snippet_workspace_edit(
 697     snap: &GlobalStateSnapshot,
 698     source_change: SourceChange,
 699 ) -> Result<lsp_ext::SnippetWorkspaceEdit> {
 700     let mut document_changes: Vec<lsp_ext::SnippetDocumentChangeOperation> = Vec::new();
 701     for op in source_change.file_system_edits {
 702         let ops = snippet_text_document_ops(snap, op);
 703         document_changes.extend_from_slice(&ops);
 704     }
 705     for (file_id, edit) in source_change.source_file_edits {
 706         let edit = snippet_text_document_edit(&snap, source_change.is_snippet, file_id, edit)?;
 707         document_changes.push(lsp_ext::SnippetDocumentChangeOperation::Edit(edit));
 708     }
 709     let workspace_edit =
 710         lsp_ext::SnippetWorkspaceEdit { changes: None, document_changes: Some(document_changes) };
 711     Ok(workspace_edit)
 712 }
 713
 714 pub(crate) fn workspace_edit(
 715     snap: &GlobalStateSnapshot,
 716     source_change: SourceChange,
 717 ) -> Result<lsp_types::WorkspaceEdit> {
 718     assert!(!source_change.is_snippet);
 719     snippet_workspace_edit(snap, source_change).map(|it| it.into())
 720 }
 721
 722 impl From<lsp_ext::SnippetWorkspaceEdit> for lsp_types::WorkspaceEdit {
 723     fn from(snippet_workspace_edit: lsp_ext::SnippetWorkspaceEdit) -> lsp_types::WorkspaceEdit {
 724         lsp_types::WorkspaceEdit {
 725             changes: None,
 726             document_changes: snippet_workspace_edit.document_changes.map(|changes| {
 727                 lsp_types::DocumentChanges::Operations(
 728                     changes
 729                         .into_iter()
 730                         .map(|change| match change {
 731                             lsp_ext::SnippetDocumentChangeOperation::Op(op) => {
 732                                 lsp_types::DocumentChangeOperation::Op(op)
 733                             }
 734                             lsp_ext::SnippetDocumentChangeOperation::Edit(edit) => {
 735                                 lsp_types::DocumentChangeOperation::Edit(
 736                                     lsp_types::TextDocumentEdit {
 737                                         text_document: edit.text_document,
 738                                         edits: edit
 739                                             .edits
 740                                             .into_iter()
 741                                             .map(|edit| {
 742                                                 lsp_types::OneOf::Left(lsp_types::TextEdit {
 743                                                     range: edit.range,
 744                                                     new_text: edit.new_text,
 745                                                 })
 746                                             })
 747                                             .collect(),
 748                                     },
 749                                 )
 750                             }
 751                         })
 752                         .collect(),
 753                 )
 754             }),
 755             change_annotations: None,
 756         }
 757     }
 758 }
 759
 760 pub(crate) fn call_hierarchy_item(
 761     snap: &GlobalStateSnapshot,
 762     target: NavigationTarget,
 763 ) -> Result<lsp_types::CallHierarchyItem> {
 764     let name = target.name.to_string();
 765     let detail = target.description.clone();
 766     let kind = target.kind.map(symbol_kind).unwrap_or(lsp_types::SymbolKind::Function);
 767     let (uri, range, selection_range) = location_info(snap, target)?;
 768     Ok(lsp_types::CallHierarchyItem {
 769         name,
 770         kind,
 771         tags: None,
 772         detail,
 773         uri,
 774         range,
 775         selection_range,
 776         data: None,
 777     })
 778 }
 779
 780 pub(crate) fn code_action_kind(kind: AssistKind) -> lsp_types::CodeActionKind {
 781     match kind {
 782         AssistKind::None | AssistKind::Generate => lsp_types::CodeActionKind::EMPTY,
 783         AssistKind::QuickFix => lsp_types::CodeActionKind::QUICKFIX,
 784         AssistKind::Refactor => lsp_types::CodeActionKind::REFACTOR,
 785         AssistKind::RefactorExtract => lsp_types::CodeActionKind::REFACTOR_EXTRACT,
 786         AssistKind::RefactorInline => lsp_types::CodeActionKind::REFACTOR_INLINE,
 787         AssistKind::RefactorRewrite => lsp_types::CodeActionKind::REFACTOR_REWRITE,
 788     }
 789 }
 790
 791 pub(crate) fn unresolved_code_action(
 792     snap: &GlobalStateSnapshot,
 793     code_action_params: lsp_types::CodeActionParams,
 794     assist: Assist,
 795     index: usize,
 796 ) -> Result<lsp_ext::CodeAction> {
 797     assert!(assist.source_change.is_none());
 798     let res = lsp_ext::CodeAction {
 799         title: assist.label.to_string(),
 800         group: assist.group.filter(|_| snap.config.code_action_group()).map(|gr| gr.0),
 801         kind: Some(code_action_kind(assist.id.1)),
 802         edit: None,
 803         is_preferred: None,
 804         data: Some(lsp_ext::CodeActionData {
 805             id: format!("{}:{}", assist.id.0, index.to_string()),
 806             code_action_params,
 807         }),
 808     };
 809     Ok(res)
 810 }
 811
 812 pub(crate) fn resolved_code_action(
 813     snap: &GlobalStateSnapshot,
 814     assist: Assist,
 815 ) -> Result<lsp_ext::CodeAction> {
 816     let change = assist.source_change.unwrap();
 817     let res = lsp_ext::CodeAction {
 818         edit: Some(snippet_workspace_edit(snap, change)?),
 819         title: assist.label.to_string(),
 820         group: assist.group.filter(|_| snap.config.code_action_group()).map(|gr| gr.0),
 821         kind: Some(code_action_kind(assist.id.1)),
 822         is_preferred: None,
 823         data: None,
 824     };
 825     Ok(res)
 826 }
 827
 828 pub(crate) fn runnable(
 829     snap: &GlobalStateSnapshot,
 830     file_id: FileId,
 831     runnable: Runnable,
 832 ) -> Result<lsp_ext::Runnable> {
 833     let config = snap.config.runnables();
 834     let spec = CargoTargetSpec::for_file(snap, file_id)?;
 835     let workspace_root = spec.as_ref().map(|it| it.workspace_root.clone());
 836     let target = spec.as_ref().map(|s| s.target.clone());
 837     let (cargo_args, executable_args) =
 838         CargoTargetSpec::runnable_args(snap, spec, &runnable.kind, &runnable.cfg)?;
 839     let label = runnable.label(target);
 840     let location = location_link(snap, None, runnable.nav)?;
 841
 842     Ok(lsp_ext::Runnable {
 843         label,
 844         location: Some(location),
 845         kind: lsp_ext::RunnableKind::Cargo,
 846         args: lsp_ext::CargoRunnable {
 847             workspace_root: workspace_root.map(|it| it.into()),
 848             override_cargo: config.override_cargo,
 849             cargo_args,
 850             cargo_extra_args: config.cargo_extra_args,
 851             executable_args,
 852             expect_test: None,
 853         },
 854     })
 855 }
 856
 857 pub(crate) fn code_lens(
 858     snap: &GlobalStateSnapshot,
 859     annotation: Annotation,
 860 ) -> Result<lsp_types::CodeLens> {
 861     match annotation.kind {
 862         AnnotationKind::Runnable { debug, runnable: run } => {
 863             let line_index = snap.file_line_index(run.nav.file_id)?;
 864             let annotation_range = range(&line_index, annotation.range);
 865
 866             let action = run.action();
 867             let r = runnable(&snap, run.nav.file_id, run)?;
 868
 869             let command = if debug {
 870                 command::debug_single(&r)
 871             } else {
 872                 let title = action.run_title.to_string();
 873                 command::run_single(&r, &title)
 874             };
 875
 876             Ok(lsp_types::CodeLens { range: annotation_range, command: Some(command), data: None })
 877         }
 878         AnnotationKind::HasImpls { position: file_position, data } => {
 879             let line_index = snap.file_line_index(file_position.file_id)?;
 880             let annotation_range = range(&line_index, annotation.range);
 881             let url = url(snap, file_position.file_id);
 882
 883             let position = position(&line_index, file_position.offset);
 884
 885             let id = lsp_types::TextDocumentIdentifier { uri: url.clone() };
 886
 887             let doc_pos = lsp_types::TextDocumentPositionParams::new(id, position);
 888
 889             let goto_params = lsp_types::request::GotoImplementationParams {
 890                 text_document_position_params: doc_pos,
 891                 work_done_progress_params: Default::default(),
 892                 partial_result_params: Default::default(),
 893             };
 894
 895             let command = data.map(|ranges| {
 896                 let locations: Vec<lsp_types::Location> = ranges
 897                     .into_iter()
 898                     .filter_map(|target| {
 899                         location(
 900                             snap,
 901                             FileRange { file_id: target.file_id, range: target.full_range },
 902                         )
 903                         .ok()
 904                     })
 905                     .collect();
 906
 907                 command::show_references(
 908                     implementation_title(locations.len()),
 909                     &url,
 910                     position,
 911                     locations,
 912                 )
 913             });
 914
 915             Ok(lsp_types::CodeLens {
 916                 range: annotation_range,
 917                 command,
 918                 data: Some(to_value(lsp_ext::CodeLensResolveData::Impls(goto_params)).unwrap()),
 919             })
 920         }
 921         AnnotationKind::HasReferences { position: file_position, data } => {
 922             let line_index = snap.file_line_index(file_position.file_id)?;
 923             let annotation_range = range(&line_index, annotation.range);
 924             let url = url(snap, file_position.file_id);
 925
 926             let position = position(&line_index, file_position.offset);
 927
 928             let id = lsp_types::TextDocumentIdentifier { uri: url.clone() };
 929
 930             let doc_pos = lsp_types::TextDocumentPositionParams::new(id, position);
 931
 932             let command = data.map(|ranges| {
 933                 let locations: Vec<lsp_types::Location> =
 934                     ranges.into_iter().filter_map(|range| location(snap, range).ok()).collect();
 935
 936                 command::show_references(
 937                     reference_title(locations.len()),
 938                     &url,
 939                     position,
 940                     locations,
 941                 )
 942             });
 943
 944             Ok(lsp_types::CodeLens {
 945                 range: annotation_range,
 946                 command,
 947                 data: Some(to_value(lsp_ext::CodeLensResolveData::References(doc_pos)).unwrap()),
 948             })
 949         }
 950     }
 951 }
 952
 953 pub(crate) mod command {
 954     use ide::{FileRange, NavigationTarget};
 955     use serde_json::to_value;
 956
 957     use crate::{
 958         global_state::GlobalStateSnapshot,
 959         lsp_ext,
 960         to_proto::{location, location_link},
 961     };
 962
 963     pub(crate) fn show_references(
 964         title: String,
 965         uri: &lsp_types::Url,
 966         position: lsp_types::Position,
 967         locations: Vec<lsp_types::Location>,
 968     ) -> lsp_types::Command {
 969         // We cannot use the 'editor.action.showReferences' command directly
 970         // because that command requires vscode types which we convert in the handler
 971         // on the client side.
 972
 973         lsp_types::Command {
 974             title,
 975             command: "rust-analyzer.showReferences".into(),
 976             arguments: Some(vec![
 977                 to_value(uri).unwrap(),
 978                 to_value(position).unwrap(),
 979                 to_value(locations).unwrap(),
 980             ]),
 981         }
 982     }
 983
 984     pub(crate) fn run_single(runnable: &lsp_ext::Runnable, title: &str) -> lsp_types::Command {
 985         lsp_types::Command {
 986             title: title.to_string(),
 987             command: "rust-analyzer.runSingle".into(),
 988             arguments: Some(vec![to_value(runnable).unwrap()]),
 989         }
 990     }
 991
 992     pub(crate) fn debug_single(runnable: &lsp_ext::Runnable) -> lsp_types::Command {
 993         lsp_types::Command {
 994             title: "Debug".into(),
 995             command: "rust-analyzer.debugSingle".into(),
 996             arguments: Some(vec![to_value(runnable).unwrap()]),
 997         }
 998     }
 999
1000     pub(crate) fn goto_location(
1001         snap: &GlobalStateSnapshot,
1002         nav: &NavigationTarget,
1003     ) -> Option<lsp_types::Command> {
1004         let value = if snap.config.location_link() {
1005             let link = location_link(snap, None, nav.clone()).ok()?;
1006             to_value(link).ok()?
1007         } else {
1008             let range = FileRange { file_id: nav.file_id, range: nav.focus_or_full_range() };
1009             let location = location(snap, range).ok()?;
1010             to_value(location).ok()?
1011         };
1012
1013         Some(lsp_types::Command {
1014             title: nav.name.to_string(),
1015             command: "rust-analyzer.gotoLocation".into(),
1016             arguments: Some(vec![value]),
1017         })
1018     }
1019
1020     pub(crate) fn trigger_parameter_hints() -> lsp_types::Command {
1021         lsp_types::Command {
1022             title: "triggerParameterHints".into(),
1023             command: "editor.action.triggerParameterHints".into(),
1024             arguments: None,
1025         }
1026     }
1027 }
1028
1029 pub(crate) fn implementation_title(count: usize) -> String {
1030     if count == 1 {
1031         "1 implementation".into()
1032     } else {
1033         format!("{} implementations", count)
1034     }
1035 }
1036
1037 pub(crate) fn reference_title(count: usize) -> String {
1038     if count == 1 {
1039         "1 reference".into()
1040     } else {
1041         format!("{} references", count)
1042     }
1043 }
1044
1045 pub(crate) fn markup_content(markup: Markup) -> lsp_types::MarkupContent {
1046     let value = crate::markdown::format_docs(markup.as_str());
1047     lsp_types::MarkupContent { kind: lsp_types::MarkupKind::Markdown, value }
1048 }
1049
1050 pub(crate) fn rename_error(err: RenameError) -> crate::LspError {
1051     crate::LspError { code: lsp_server::ErrorCode::InvalidParams as i32, message: err.to_string() }
1052 }
1053
1054 #[cfg(test)]
1055 mod tests {
1056     use std::sync::Arc;
1057
1058     use hir::PrefixKind;
1059     use ide::Analysis;
1060     use ide_db::helpers::{insert_use::InsertUseConfig, SnippetCap};
1061
1062     use super::*;
1063
1064     #[test]
1065     fn test_completion_with_ref() {
1066         let fixture = r#"
1067         struct Foo;
1068         fn foo(arg: &Foo) {}
1069         fn main() {
1070             let arg = Foo;
1071             foo($0)
1072         }"#;
1073
1074         let (offset, text) = test_utils::extract_offset(fixture);
1075         let line_index = LineIndex {
1076             index: Arc::new(ide::LineIndex::new(&text)),
1077             endings: LineEndings::Unix,
1078             encoding: OffsetEncoding::Utf16,
1079         };
1080         let (analysis, file_id) = Analysis::from_single_file(text);
1081         let completions: Vec<(String, Option<String>)> = analysis
1082             .completions(
1083                 &ide::CompletionConfig {
1084                     enable_postfix_completions: true,
1085                     enable_imports_on_the_fly: true,
1086                     add_call_parenthesis: true,
1087                     add_call_argument_snippets: true,
1088                     snippet_cap: SnippetCap::new(true),
1089                     insert_use: InsertUseConfig {
1090                         merge: None,
1091                         prefix_kind: PrefixKind::Plain,
1092                         group: true,
1093                     },
1094                 },
1095                 ide_db::base_db::FilePosition { file_id, offset },
1096             )
1097             .unwrap()
1098             .unwrap()
1099             .into_iter()
1100             .filter(|c| c.label().ends_with("arg"))
1101             .map(|c| completion_item(&line_index, c))
1102             .flat_map(|comps| comps.into_iter().map(|c| (c.label, c.sort_text)))
1103             .collect();
1104         expect_test::expect![[r#"
1105             [
1106                 (
1107                     "arg",
1108                     None,
1109                 ),
1110                 (
1111                     "&arg",
1112                     Some(
1113                         " &arg",
1114                     ),
1115                 ),
1116             ]
1117         "#]]
1118         .assert_debug_eq(&completions);
1119     }
1120
1121     #[test]
1122     fn conv_fold_line_folding_only_fixup() {
1123         let text = r#"mod a;
1124 mod b;
1125 mod c;
1126
1127 fn main() {
1128     if cond {
1129         a::do_a();
1130     } else {
1131         b::do_b();
1132     }
1133 }"#;
1134
1135         let (analysis, file_id) = Analysis::from_single_file(text.to_string());
1136         let folds = analysis.folding_ranges(file_id).unwrap();
1137         assert_eq!(folds.len(), 4);
1138
1139         let line_index = LineIndex {
1140             index: Arc::new(ide::LineIndex::new(&text)),
1141             endings: LineEndings::Unix,
1142             encoding: OffsetEncoding::Utf16,
1143         };
1144         let converted: Vec<lsp_types::FoldingRange> =
1145             folds.into_iter().map(|it| folding_range(&text, &line_index, true, it)).collect();
1146
1147         let expected_lines = [(0, 2), (4, 10), (5, 6), (7, 9)];
1148         assert_eq!(converted.len(), expected_lines.len());
1149         for (folding_range, (start_line, end_line)) in converted.iter().zip(expected_lines.iter()) {
1150             assert_eq!(folding_range.start_line, *start_line);
1151             assert_eq!(folding_range.start_character, None);
1152             assert_eq!(folding_range.end_line, *end_line);
1153             assert_eq!(folding_range.end_character, None);
1154         }
1155     }
1156
1157     // `Url` is not able to parse windows paths on unix machines.
1158     #[test]
1159     #[cfg(target_os = "windows")]
1160     fn test_lowercase_drive_letter_with_drive() {
1161         let url = url_from_abs_path(Path::new("C:\\Test"));
1162         assert_eq!(url.to_string(), "file:///c:/Test");
1163     }
1164
1165     #[test]
1166     #[cfg(target_os = "windows")]
1167     fn test_drive_without_colon_passthrough() {
1168         let url = url_from_abs_path(Path::new(r#"\\localhost\C$\my_dir"#));
1169         assert_eq!(url.to_string(), "file://localhost/C$/my_dir");
1170     }
1171 }