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path: root/crates/rust-analyzer/src/caps.rs
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//! Advertizes the capabilities of the LSP Server.
use std::env;

use crate::semantic_tokens;

use lsp_types::{
    CallHierarchyServerCapability, CodeActionOptions, CodeActionProviderCapability,
    CodeLensOptions, CompletionOptions, DocumentOnTypeFormattingOptions,
    FoldingRangeProviderCapability, ImplementationProviderCapability, RenameOptions,
    RenameProviderCapability, SaveOptions, SelectionRangeProviderCapability,
    SemanticTokensDocumentProvider, SemanticTokensLegend, SemanticTokensOptions,
    ServerCapabilities, SignatureHelpOptions, TextDocumentSyncCapability, TextDocumentSyncKind,
    TextDocumentSyncOptions, TypeDefinitionProviderCapability, WorkDoneProgressOptions,
};

pub fn server_capabilities() -> ServerCapabilities {
    ServerCapabilities {
        text_document_sync: Some(TextDocumentSyncCapability::Options(TextDocumentSyncOptions {
            open_close: Some(true),
            change: Some(if env::var("RA_NO_INCREMENTAL_SYNC").is_ok() {
                TextDocumentSyncKind::Full
            } else {
                TextDocumentSyncKind::Incremental
            }),
            will_save: None,
            will_save_wait_until: None,
            save: Some(SaveOptions::default()),
        })),
        hover_provider: Some(true),
        completion_provider: Some(CompletionOptions {
            resolve_provider: None,
            trigger_characters: Some(vec![":".to_string(), ".".to_string()]),
            work_done_progress_options: WorkDoneProgressOptions { work_done_progress: None },
        }),
        signature_help_provider: Some(SignatureHelpOptions {
            trigger_characters: Some(vec!["(".to_string(), ",".to_string()]),
            retrigger_characters: None,
            work_done_progress_options: WorkDoneProgressOptions { work_done_progress: None },
        }),
        declaration_provider: None,
        definition_provider: Some(true),
        type_definition_provider: Some(TypeDefinitionProviderCapability::Simple(true)),
        implementation_provider: Some(ImplementationProviderCapability::Simple(true)),
        references_provider: Some(true),
        document_highlight_provider: Some(true),
        document_symbol_provider: Some(true),
        workspace_symbol_provider: Some(true),
        code_action_provider: Some(CodeActionProviderCapability::Options(CodeActionOptions {
            // Advertise support for all built-in CodeActionKinds
            code_action_kinds: Some(vec![
                lsp_types::code_action_kind::EMPTY.to_string(),
                lsp_types::code_action_kind::QUICKFIX.to_string(),
                lsp_types::code_action_kind::REFACTOR.to_string(),
                lsp_types::code_action_kind::REFACTOR_EXTRACT.to_string(),
                lsp_types::code_action_kind::REFACTOR_INLINE.to_string(),
                lsp_types::code_action_kind::REFACTOR_REWRITE.to_string(),
                lsp_types::code_action_kind::SOURCE.to_string(),
                lsp_types::code_action_kind::SOURCE_ORGANIZE_IMPORTS.to_string(),
            ]),
            work_done_progress_options: Default::default(),
        })),
        code_lens_provider: Some(CodeLensOptions { resolve_provider: Some(true) }),
        document_formatting_provider: Some(true),
        document_range_formatting_provider: None,
        document_on_type_formatting_provider: Some(DocumentOnTypeFormattingOptions {
            first_trigger_character: "=".to_string(),
            more_trigger_character: Some(vec![".".to_string(), ">".to_string()]),
        }),
        selection_range_provider: Some(SelectionRangeProviderCapability::Simple(true)),
        semantic_highlighting: None,
        folding_range_provider: Some(FoldingRangeProviderCapability::Simple(true)),
        rename_provider: Some(RenameProviderCapability::Options(RenameOptions {
            prepare_provider: Some(true),
            work_done_progress_options: WorkDoneProgressOptions { work_done_progress: None },
        })),
        document_link_provider: None,
        color_provider: None,
        execute_command_provider: None,
        workspace: None,
        call_hierarchy_provider: Some(CallHierarchyServerCapability::Simple(true)),
        semantic_tokens_provider: Some(
            SemanticTokensOptions {
                legend: SemanticTokensLegend {
                    token_types: semantic_tokens::SUPPORTED_TYPES.to_vec(),
                    token_modifiers: semantic_tokens::SUPPORTED_MODIFIERS.to_vec(),
                },

                document_provider: Some(SemanticTokensDocumentProvider::Bool(true)),
                range_provider: Some(true),
                work_done_progress_options: Default::default(),
            }
            .into(),
        ),
        experimental: Default::default(),
    }
}