Auto merge of #17365 - DropDemBits:diagnostic-snippet-cap, r=Veykril

internal: Expose snippet capability to diagnostic quickfixes

Fixes #16767

Author: bors

crates/ide-diagnostics/src/lib.rs

@@ -86,7 +86,7 @@ use ide_db::{
     label::Label,
     source_change::SourceChange,
     syntax_helpers::node_ext::parse_tt_as_comma_sep_paths,
-    FxHashMap, FxHashSet, RootDatabase,
+    FxHashMap, FxHashSet, RootDatabase, SnippetCap,
 };
 use once_cell::sync::Lazy;
 use stdx::never;
@@ -229,6 +229,7 @@ pub struct DiagnosticsConfig {
     pub expr_fill_default: ExprFillDefaultMode,
     pub style_lints: bool,
     // FIXME: We may want to include a whole `AssistConfig` here
+    pub snippet_cap: Option<SnippetCap>,
     pub insert_use: InsertUseConfig,
     pub prefer_no_std: bool,
     pub prefer_prelude: bool,
@@ -248,6 +249,7 @@ impl DiagnosticsConfig {
             disabled: Default::default(),
             expr_fill_default: Default::default(),
             style_lints: true,
+            snippet_cap: SnippetCap::new(true),
             insert_use: InsertUseConfig {
                 granularity: ImportGranularity::Preserve,
                 enforce_granularity: false,

crates/rust-analyzer/src/caps.rs

@@ -223,7 +223,7 @@ fn code_action_capabilities(client_caps: &ClientCapabilities) -> CodeActionProvi
 
 fn more_trigger_character(config: &Config) -> Vec<String> {
     let mut res = vec![".".to_owned(), ">".to_owned(), "{".to_owned(), "(".to_owned()];
-    if config.snippet_cap() {
+    if config.snippet_cap().is_some() {
         res.push("<".to_owned());
     }
     res

crates/rust-analyzer/src/cli/analysis_stats.rs

@@ -25,7 +25,7 @@ use ide_db::{
         salsa::{self, debug::DebugQueryTable, ParallelDatabase},
         SourceDatabase, SourceDatabaseExt,
     },
-    LineIndexDatabase,
+    LineIndexDatabase, SnippetCap,
 };
 use itertools::Itertools;
 use load_cargo::{load_workspace, LoadCargoConfig, ProcMacroServerChoice};
@@ -982,6 +982,7 @@ impl flags::AnalysisStats {
                     disable_experimental: false,
                     disabled: Default::default(),
                     expr_fill_default: Default::default(),
+                    snippet_cap: SnippetCap::new(true),
                     insert_use: ide_db::imports::insert_use::InsertUseConfig {
                         granularity: ide_db::imports::insert_use::ImportGranularity::Crate,
                         enforce_granularity: true,

crates/rust-analyzer/src/config.rs

@@ -1261,7 +1261,7 @@ impl Config {
 impl Config {
     pub fn assist(&self, source_root: Option<SourceRootId>) -> AssistConfig {
         AssistConfig {
-            snippet_cap: SnippetCap::new(self.experimental("snippetTextEdit")),
+            snippet_cap: self.snippet_cap(),
             allowed: None,
             insert_use: self.insert_use_config(source_root),
             prefer_no_std: self.imports_preferNoStd(source_root).to_owned(),
@@ -1321,6 +1321,7 @@ impl Config {
                 ExprFillDefaultDef::Todo => ExprFillDefaultMode::Todo,
                 ExprFillDefaultDef::Default => ExprFillDefaultMode::Default,
             },
+            snippet_cap: self.snippet_cap(),
             insert_use: self.insert_use_config(source_root),
             prefer_no_std: self.imports_preferNoStd(source_root).to_owned(),
             prefer_prelude: self.imports_preferPrelude(source_root).to_owned(),
@@ -2007,8 +2008,10 @@ impl Config {
         *self.references_excludeTests()
     }
 
-    pub fn snippet_cap(&self) -> bool {
-        self.experimental("snippetTextEdit")
+    pub fn snippet_cap(&self) -> Option<SnippetCap> {
+        // FIXME: Also detect the proposed lsp version at caps.workspace.workspaceEdit.snippetEditSupport
+        // once lsp-types has it.
+        SnippetCap::new(self.experimental("snippetTextEdit"))
     }
 
     pub fn call_info(&self) -> CallInfoConfig {

crates/rust-analyzer/src/integrated_benchmarks.rs

@@ -289,6 +289,7 @@ fn integrated_diagnostics_benchmark() {
         disabled: Default::default(),
         expr_fill_default: Default::default(),
         style_lints: false,
+        snippet_cap: SnippetCap::new(true),
         insert_use: InsertUseConfig {
             granularity: ImportGranularity::Crate,
             enforce_granularity: false,