1 //! Advertizes the capabilities of the LSP Server.
4 use ide::CompletionResolveCapability;
6 CallHierarchyServerCapability, ClientCapabilities, CodeActionKind, CodeActionOptions,
7 CodeActionProviderCapability, CodeLensOptions, CompletionOptions,
8 DocumentOnTypeFormattingOptions, FoldingRangeProviderCapability, HoverProviderCapability,
9 ImplementationProviderCapability, OneOf, RenameOptions, SaveOptions,
10 SelectionRangeProviderCapability, SemanticTokensFullOptions, SemanticTokensLegend,
11 SemanticTokensOptions, ServerCapabilities, SignatureHelpOptions, TextDocumentSyncCapability,
12 TextDocumentSyncKind, TextDocumentSyncOptions, TypeDefinitionProviderCapability,
13 WorkDoneProgressOptions,
15 use rustc_hash::FxHashSet;
18 use crate::semantic_tokens;
20 pub fn server_capabilities(client_caps: &ClientCapabilities) -> ServerCapabilities {
22 text_document_sync: Some(TextDocumentSyncCapability::Options(TextDocumentSyncOptions {
23 open_close: Some(true),
24 change: Some(if env::var("RA_NO_INCREMENTAL_SYNC").is_ok() {
25 TextDocumentSyncKind::Full
27 TextDocumentSyncKind::Incremental
30 will_save_wait_until: None,
31 save: Some(SaveOptions::default().into()),
33 hover_provider: Some(HoverProviderCapability::Simple(true)),
34 completion_provider: Some(CompletionOptions {
35 resolve_provider: Some(true),
36 trigger_characters: Some(vec![":".to_string(), ".".to_string()]),
37 work_done_progress_options: WorkDoneProgressOptions { work_done_progress: None },
39 signature_help_provider: Some(SignatureHelpOptions {
40 trigger_characters: Some(vec!["(".to_string(), ",".to_string()]),
41 retrigger_characters: None,
42 work_done_progress_options: WorkDoneProgressOptions { work_done_progress: None },
44 declaration_provider: None,
45 definition_provider: Some(OneOf::Left(true)),
46 type_definition_provider: Some(TypeDefinitionProviderCapability::Simple(true)),
47 implementation_provider: Some(ImplementationProviderCapability::Simple(true)),
48 references_provider: Some(OneOf::Left(true)),
49 document_highlight_provider: Some(OneOf::Left(true)),
50 document_symbol_provider: Some(OneOf::Left(true)),
51 workspace_symbol_provider: Some(OneOf::Left(true)),
52 code_action_provider: Some(code_action_capabilities(client_caps)),
53 code_lens_provider: Some(CodeLensOptions {
54 resolve_provider: resolve_provider(client_caps),
56 document_formatting_provider: Some(OneOf::Left(true)),
57 document_range_formatting_provider: None,
58 document_on_type_formatting_provider: Some(DocumentOnTypeFormattingOptions {
59 first_trigger_character: "=".to_string(),
60 more_trigger_character: Some(vec![".".to_string(), ">".to_string()]),
62 selection_range_provider: Some(SelectionRangeProviderCapability::Simple(true)),
63 semantic_highlighting: None,
64 folding_range_provider: Some(FoldingRangeProviderCapability::Simple(true)),
65 rename_provider: Some(OneOf::Right(RenameOptions {
66 prepare_provider: Some(true),
67 work_done_progress_options: WorkDoneProgressOptions { work_done_progress: None },
69 on_type_rename_provider: None,
70 document_link_provider: None,
72 execute_command_provider: None,
74 call_hierarchy_provider: Some(CallHierarchyServerCapability::Simple(true)),
75 semantic_tokens_provider: Some(
76 SemanticTokensOptions {
77 legend: SemanticTokensLegend {
78 token_types: semantic_tokens::SUPPORTED_TYPES.to_vec(),
79 token_modifiers: semantic_tokens::SUPPORTED_MODIFIERS.to_vec(),
82 full: Some(SemanticTokensFullOptions::Delta { delta: Some(true) }),
84 work_done_progress_options: Default::default(),
88 experimental: Some(json!({
100 fn resolve_provider(client_caps: &ClientCapabilities) -> Option<bool> {
101 if enabled_resolve_capabilities(client_caps)?.is_empty() {
108 /// Parses client capabilities and returns all that rust-analyzer supports.
109 pub fn enabled_resolve_capabilities(
110 caps: &ClientCapabilities,
111 ) -> Option<FxHashSet<CompletionResolveCapability>> {
123 .filter_map(|cap_string| {
124 Some(match cap_string.as_str() {
125 "additionalTextEdits" => CompletionResolveCapability::AdditionalTextEdits,
126 "detail" => CompletionResolveCapability::Detail,
127 "documentation" => CompletionResolveCapability::Documentation,
128 _unsupported => return None,
135 fn code_action_capabilities(client_caps: &ClientCapabilities) -> CodeActionProviderCapability {
139 .and_then(|it| it.code_action.as_ref())
140 .and_then(|it| it.code_action_literal_support.as_ref())
141 .map_or(CodeActionProviderCapability::Simple(true), |_| {
142 CodeActionProviderCapability::Options(CodeActionOptions {
143 // Advertise support for all built-in CodeActionKinds.
144 // Ideally we would base this off of the client capabilities
145 // but the client is supposed to fall back gracefully for unknown values.
146 code_action_kinds: Some(vec![
147 CodeActionKind::EMPTY,
148 CodeActionKind::QUICKFIX,
149 CodeActionKind::REFACTOR,
150 CodeActionKind::REFACTOR_EXTRACT,
151 CodeActionKind::REFACTOR_INLINE,
152 CodeActionKind::REFACTOR_REWRITE,
154 resolve_provider: Some(true),
155 work_done_progress_options: Default::default(),