Make term search fuel configurable

src/tools/rust-analyzer/crates/hir/src/term_search.rs

@@ -269,7 +269,7 @@ pub struct TermSearchConfig {
     pub enable_borrowcheck: bool,
     /// Indicate when to squash multiple trees to `Many` as there are too many to keep track
     pub many_alternatives_threshold: usize,
-    /// Fuel for term search
+    /// Fuel for term search in "units of work"
     pub fuel: u64,
 }
 

src/tools/rust-analyzer/crates/hir/src/term_search/expr.rs

@@ -474,9 +474,7 @@ fn contains_many_in_illegal_pos(&self, db: &dyn HirDatabase) -> bool {
             Expr::Method { target, func, .. } => {
                 match func.as_assoc_item(db).and_then(|it| it.container_or_implemented_trait(db)) {
                     Some(_) => false,
-                    None => {
+                    None => target.is_many(),
-                        target.is_many()
-                    }
                 }
             }
             Expr::Field { expr, .. } => expr.contains_many_in_illegal_pos(db),

src/tools/rust-analyzer/crates/hir/src/term_search/tactics.rs

@@ -4,6 +4,7 @@
 //! * `ctx` - Context for the term search
 //! * `defs` - Set of items in scope at term search target location
 //! * `lookup` - Lookup table for types
+//! * `should_continue` - Function that indicates when to stop iterating
 //! And they return iterator that yields type trees that unify with the `goal` type.
 
 use std::iter;
@@ -97,6 +98,7 @@ pub(super) fn trivial<'a, DB: HirDatabase>(
 /// * `ctx` - Context for the term search
 /// * `defs` - Set of items in scope at term search target location
 /// * `lookup` - Lookup table for types
+/// * `should_continue` - Function that indicates when to stop iterating
 pub(super) fn type_constructor<'a, DB: HirDatabase>(
     ctx: &'a TermSearchCtx<'a, DB>,
     defs: &'a FxHashSet<ScopeDef>,
@@ -357,6 +359,7 @@ fn variant_helper(
 /// * `ctx` - Context for the term search
 /// * `defs` - Set of items in scope at term search target location
 /// * `lookup` - Lookup table for types
+/// * `should_continue` - Function that indicates when to stop iterating
 pub(super) fn free_function<'a, DB: HirDatabase>(
     ctx: &'a TermSearchCtx<'a, DB>,
     defs: &'a FxHashSet<ScopeDef>,
@@ -488,6 +491,7 @@ pub(super) fn free_function<'a, DB: HirDatabase>(
 /// * `ctx` - Context for the term search
 /// * `defs` - Set of items in scope at term search target location
 /// * `lookup` - Lookup table for types
+/// * `should_continue` - Function that indicates when to stop iterating
 pub(super) fn impl_method<'a, DB: HirDatabase>(
     ctx: &'a TermSearchCtx<'a, DB>,
     _defs: &'a FxHashSet<ScopeDef>,
@@ -661,6 +665,7 @@ pub(super) fn impl_method<'a, DB: HirDatabase>(
 /// * `ctx` - Context for the term search
 /// * `defs` - Set of items in scope at term search target location
 /// * `lookup` - Lookup table for types
+/// * `should_continue` - Function that indicates when to stop iterating
 pub(super) fn struct_projection<'a, DB: HirDatabase>(
     ctx: &'a TermSearchCtx<'a, DB>,
     _defs: &'a FxHashSet<ScopeDef>,
@@ -734,6 +739,7 @@ pub(super) fn famous_types<'a, DB: HirDatabase>(
 /// * `ctx` - Context for the term search
 /// * `defs` - Set of items in scope at term search target location
 /// * `lookup` - Lookup table for types
+/// * `should_continue` - Function that indicates when to stop iterating
 pub(super) fn impl_static_method<'a, DB: HirDatabase>(
     ctx: &'a TermSearchCtx<'a, DB>,
     _defs: &'a FxHashSet<ScopeDef>,
@@ -905,6 +911,7 @@ pub(super) fn impl_static_method<'a, DB: HirDatabase>(
 /// * `ctx` - Context for the term search
 /// * `defs` - Set of items in scope at term search target location
 /// * `lookup` - Lookup table for types
+/// * `should_continue` - Function that indicates when to stop iterating
 pub(super) fn make_tuple<'a, DB: HirDatabase>(
     ctx: &'a TermSearchCtx<'a, DB>,
     _defs: &'a FxHashSet<ScopeDef>,

src/tools/rust-analyzer/crates/ide-assists/src/assist_config.rs

@@ -16,4 +16,5 @@ pub struct AssistConfig {
     pub prefer_no_std: bool,
     pub prefer_prelude: bool,
     pub assist_emit_must_use: bool,
+    pub term_search_fuel: u64,
 }

src/tools/rust-analyzer/crates/ide-assists/src/handlers/term_search.rs

@@ -1,5 +1,5 @@
 //! Term search assist
-use hir::term_search::TermSearchCtx;
+use hir::term_search::{TermSearchConfig, TermSearchCtx};
 use ide_db::{
     assists::{AssistId, AssistKind, GroupLabel},
     famous_defs::FamousDefs,
@@ -34,7 +34,7 @@ pub(crate) fn term_search(acc: &mut Assists, ctx: &AssistContext<'_>) -> Option<
         sema: &ctx.sema,
         scope: &scope,
         goal: target_ty,
-        config: Default::default(),
+        config: TermSearchConfig { fuel: ctx.config.term_search_fuel, ..Default::default() },
     };
     let paths = hir::term_search::term_search(&term_search_ctx);
 

src/tools/rust-analyzer/crates/ide-assists/src/tests.rs

@@ -31,6 +31,7 @@
     prefer_no_std: false,
     prefer_prelude: true,
     assist_emit_must_use: false,
+    term_search_fuel: 400,
 };
 
 pub(crate) const TEST_CONFIG_NO_SNIPPET_CAP: AssistConfig = AssistConfig {
@@ -46,6 +47,7 @@
     prefer_no_std: false,
     prefer_prelude: true,
     assist_emit_must_use: false,
+    term_search_fuel: 400,
 };
 
 pub(crate) const TEST_CONFIG_IMPORT_ONE: AssistConfig = AssistConfig {
@@ -61,6 +63,7 @@
     prefer_no_std: false,
     prefer_prelude: true,
     assist_emit_must_use: false,
+    term_search_fuel: 400,
 };
 
 pub(crate) fn with_single_file(text: &str) -> (RootDatabase, FileId) {

src/tools/rust-analyzer/crates/ide-completion/src/completions/expr.rs

@@ -354,7 +354,6 @@ pub(crate) fn complete_expr(acc: &mut Completions, ctx: &CompletionContext<'_>)
                 enable_borrowcheck: false,
                 many_alternatives_threshold: 1,
                 fuel: 200,
-                ..Default::default()
             },
         };
         let exprs = hir::term_search::term_search(&term_search_ctx);

src/tools/rust-analyzer/crates/ide-completion/src/config.rs

@@ -15,6 +15,7 @@ pub struct CompletionConfig {
     pub enable_self_on_the_fly: bool,
     pub enable_private_editable: bool,
     pub enable_term_search: bool,
+    pub term_search_fuel: u64,
     pub full_function_signatures: bool,
     pub callable: Option<CallableSnippets>,
     pub snippet_cap: Option<SnippetCap>,

src/tools/rust-analyzer/crates/ide-completion/src/tests.rs

@@ -80,6 +80,7 @@ union Union { field: i32 }
     },
     snippets: Vec::new(),
     limit: None,
+    term_search_fuel: 200,
 };
 
 pub(crate) fn completion_list(ra_fixture: &str) -> String {

src/tools/rust-analyzer/crates/ide-diagnostics/src/handlers/typed_hole.rs

@@ -1,6 +1,6 @@
 use hir::{
     db::ExpandDatabase,
-    term_search::{term_search, TermSearchCtx},
+    term_search::{term_search, TermSearchConfig, TermSearchCtx},
     ClosureStyle, HirDisplay,
 };
 use ide_db::{
@@ -47,7 +47,7 @@ fn fixes(ctx: &DiagnosticsContext<'_>, d: &hir::TypedHole) -> Option<Vec<Assist>
         sema: &ctx.sema,
         scope: &scope,
         goal: d.expected.clone(),
-        config: Default::default(),
+        config: TermSearchConfig { fuel: ctx.config.term_search_fuel, ..Default::default() },
     };
     let paths = term_search(&term_search_ctx);
 

src/tools/rust-analyzer/crates/ide-diagnostics/src/lib.rs

@@ -232,6 +232,7 @@ pub struct DiagnosticsConfig {
     pub insert_use: InsertUseConfig,
     pub prefer_no_std: bool,
     pub prefer_prelude: bool,
+    pub term_search_fuel: u64,
 }
 
 impl DiagnosticsConfig {
@@ -256,6 +257,7 @@ pub fn test_sample() -> Self {
             },
             prefer_no_std: false,
             prefer_prelude: true,
+            term_search_fuel: 400,
         }
     }
 }

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

@@ -986,6 +986,7 @@ fn run_ide_things(&self, analysis: Analysis, mut file_ids: Vec<FileId>) {
                     prefer_no_std: false,
                     prefer_prelude: true,
                     style_lints: false,
+                    term_search_fuel: 400,
                 },
                 ide::AssistResolveStrategy::All,
                 file_id,

src/tools/rust-analyzer/crates/rust-analyzer/src/config.rs

@@ -454,6 +454,9 @@
     /// Local configurations can be overridden for every crate by placing a `rust-analyzer.toml` on crate root.
     /// A config is searched for by traversing a "config tree" in a bottom up fashion. It is chosen by the nearest first principle.
     local: struct LocalDefaultConfigData <- LocalConfigInput ->  {
+        /// Term search fuel in "units of work" for assists (Defaults to 400).
+        assist_termSearch_fuel: usize = 400,
+
         /// Toggles the additional completions that automatically add imports when completed.
         /// Note that your client must specify the `additionalTextEdits` LSP client capability to truly have this feature enabled.
         completion_autoimport_enable: bool       = true,
@@ -515,6 +518,8 @@
         }"#).unwrap(),
         /// Whether to enable term search based snippets like `Some(foo.bar().baz())`.
         completion_termSearch_enable: bool = false,
+        /// Term search fuel in "units of work" for autocompletion (Defaults to 200).
+        completion_termSearch_fuel: usize = 200,
 
         /// Enables highlighting of related references while the cursor is on `break`, `loop`, `while`, or `for` keywords.
         highlightRelated_breakPoints_enable: bool = true,
@@ -1015,6 +1020,7 @@ pub fn assist(&self, source_root: Option<SourceRootId>) -> AssistConfig {
             prefer_no_std: self.imports_preferNoStd(source_root).to_owned(),
             assist_emit_must_use: self.assist_emitMustUse().to_owned(),
             prefer_prelude: self.imports_preferPrelude(source_root).to_owned(),
+            term_search_fuel: self.assist_termSearch_fuel(source_root).to_owned() as u64,
         }
     }
 
@@ -1048,6 +1054,7 @@ pub fn completion(&self, source_root: Option<SourceRootId>) -> CompletionConfig
             snippets: self.snippets.clone().to_vec(),
             limit: self.completion_limit(source_root).to_owned(),
             enable_term_search: self.completion_termSearch_enable(source_root).to_owned(),
+            term_search_fuel: self.completion_termSearch_fuel(source_root).to_owned() as u64,
             prefer_prelude: self.imports_preferPrelude(source_root).to_owned(),
         }
     }
@@ -1067,6 +1074,7 @@ pub fn diagnostics(&self, source_root: Option<SourceRootId>) -> DiagnosticsConfi
             prefer_no_std: self.imports_preferNoStd(source_root).to_owned(),
             prefer_prelude: self.imports_preferPrelude(source_root).to_owned(),
             style_lints: self.diagnostics_styleLints_enable().to_owned(),
+            term_search_fuel: self.assist_termSearch_fuel(source_root).to_owned() as u64,
         }
     }
     pub fn expand_proc_attr_macros(&self) -> bool {

src/tools/rust-analyzer/crates/rust-analyzer/src/integrated_benchmarks.rs

@@ -153,6 +153,7 @@ fn integrated_completion_benchmark() {
             prefer_no_std: false,
             prefer_prelude: true,
             limit: None,
+            term_search_fuel: 200,
         };
         let position =
             FilePosition { file_id, offset: TextSize::try_from(completion_offset).unwrap() };
@@ -197,6 +198,7 @@ fn integrated_completion_benchmark() {
             prefer_no_std: false,
             prefer_prelude: true,
             limit: None,
+            term_search_fuel: 200,
         };
         let position =
             FilePosition { file_id, offset: TextSize::try_from(completion_offset).unwrap() };
@@ -239,6 +241,7 @@ fn integrated_completion_benchmark() {
             prefer_no_std: false,
             prefer_prelude: true,
             limit: None,
+            term_search_fuel: 200,
         };
         let position =
             FilePosition { file_id, offset: TextSize::try_from(completion_offset).unwrap() };
@@ -295,6 +298,7 @@ fn integrated_diagnostics_benchmark() {
         },
         prefer_no_std: false,
         prefer_prelude: false,
+        term_search_fuel: 400,
     };
     host.analysis()
         .diagnostics(&diagnostics_config, ide::AssistResolveStrategy::None, file_id)

src/tools/rust-analyzer/docs/user/generated_config.adoc

@@ -9,6 +9,11 @@ for enum variants.
 --
 Placeholder expression to use for missing expressions in assists.
 --
+[[rust-analyzer.assist.termSearch.fuel]]rust-analyzer.assist.termSearch.fuel (default: `400`)::
++
+--
+Term search fuel in "units of work" for assists (Defaults to 400).
+--
 [[rust-analyzer.cachePriming.enable]]rust-analyzer.cachePriming.enable (default: `true`)::
 +
 --
@@ -373,6 +378,11 @@ Custom completion snippets.
 --
 Whether to enable term search based snippets like `Some(foo.bar().baz())`.
 --
+[[rust-analyzer.completion.termSearch.fuel]]rust-analyzer.completion.termSearch.fuel (default: `200`)::
++
+--
+Term search fuel in "units of work" for autocompletion (Defaults to 200).
+--
 [[rust-analyzer.diagnostics.disabled]]rust-analyzer.diagnostics.disabled (default: `[]`)::
 +
 --

src/tools/rust-analyzer/editors/code/package.json

@@ -534,6 +534,12 @@
                         "Fill missing expressions with reasonable defaults, `new` or `default` constructors."
                     ]
                 },
+                "rust-analyzer.assist.termSearch.fuel": {
+                    "markdownDescription": "Term search fuel in \"units of work\" for assists (Defaults to 400).",
+                    "default": 400,
+                    "type": "integer",
+                    "minimum": 0
+                },
                 "rust-analyzer.cachePriming.enable": {
                     "markdownDescription": "Warm up caches on project load.",
                     "default": true,
@@ -930,6 +936,12 @@
                     "default": false,
                     "type": "boolean"
                 },
+                "rust-analyzer.completion.termSearch.fuel": {
+                    "markdownDescription": "Term search fuel in \"units of work\" for autocompletion (Defaults to 200).",
+                    "default": 200,
+                    "type": "integer",
+                    "minimum": 0
+                },
                 "rust-analyzer.diagnostics.disabled": {
                     "markdownDescription": "List of rust-analyzer diagnostics to disable.",
                     "default": [],