Provide resolve data only when it can actually be resolved

crates/ide/src/inlay_hints.rs

@@ -153,11 +153,13 @@ pub struct InlayHint {
     pub label: InlayHintLabel,
     /// Text edit to apply when "accepting" this inlay hint.
     pub text_edit: Option<TextEdit>,
+    pub needs_resolve: bool,
 }
 
 impl InlayHint {
     fn closing_paren_after(kind: InlayKind, range: TextRange) -> InlayHint {
         InlayHint {
+            needs_resolve: false,
             range,
             kind,
             label: InlayHintLabel::from(")"),
@@ -169,6 +171,7 @@ impl InlayHint {
     }
     fn opening_paren_before(kind: InlayKind, range: TextRange) -> InlayHint {
         InlayHint {
+            needs_resolve: false,
             range,
             kind,
             label: InlayHintLabel::from("("),
@@ -226,6 +229,10 @@ impl InlayHintLabel {
             }),
         }
     }
+
+    pub fn needs_resolve(&self) -> bool {
+        self.parts.iter().any(|part| part.linked_location.is_some() || part.tooltip.is_some())
+    }
 }
 
 impl From<String> for InlayHintLabel {

crates/ide/src/inlay_hints/adjustment.rs

@@ -137,21 +137,23 @@ pub(super) fn hints(
             }
             _ => continue,
         };
+        let label = InlayHintLabel::simple(
+            if postfix { format!(".{}", text.trim_end()) } else { text.to_owned() },
+            Some(InlayTooltip::Markdown(format!(
+                "`{}` → `{}` ({coercion} coercion)",
+                source.display(sema.db),
+                target.display(sema.db),
+            ))),
+            None,
+        );
         acc.push(InlayHint {
+            needs_resolve: label.needs_resolve(),
             range: expr.syntax().text_range(),
             pad_left: false,
             pad_right: false,
             position: if postfix { InlayHintPosition::After } else { InlayHintPosition::Before },
             kind: InlayKind::Adjustment,
-            label: InlayHintLabel::simple(
+            label,
-                if postfix { format!(".{}", text.trim_end()) } else { text.to_owned() },
-                Some(InlayTooltip::Markdown(format!(
-                    "`{}` → `{}` ({coercion} coercion)",
-                    source.display(sema.db),
-                    target.display(sema.db),
-                ))),
-                None,
-            ),
             text_edit: None,
         });
     }

crates/ide/src/inlay_hints/bind_pat.rs

@@ -99,6 +99,7 @@ pub(super) fn hints(
         None => pat.syntax().text_range(),
     };
     acc.push(InlayHint {
+        needs_resolve: label.needs_resolve() || text_edit.is_some(),
         range: match type_ascriptable {
             Some(Some(t)) => text_range.cover(t.text_range()),
             _ => text_range,

crates/ide/src/inlay_hints/binding_mode.rs

@@ -50,9 +50,10 @@ pub(super) fn hints(
             _ => return,
         };
         acc.push(InlayHint {
+            needs_resolve: false,
             range,
             kind: InlayKind::BindingMode,
-            label: r.to_string().into(),
+            label: r.into(),
             text_edit: None,
             position: InlayHintPosition::Before,
             pad_left: false,
@@ -68,9 +69,10 @@ pub(super) fn hints(
                 hir::BindingMode::Ref(Mutability::Shared) => "ref",
             };
             acc.push(InlayHint {
+                needs_resolve: false,
                 range: pat.syntax().text_range(),
                 kind: InlayKind::BindingMode,
-                label: bm.to_string().into(),
+                label: bm.into(),
                 text_edit: None,
                 position: InlayHintPosition::Before,
                 pad_left: false,

crates/ide/src/inlay_hints/chaining.rs

@@ -57,10 +57,12 @@ pub(super) fn hints(
                     }
                 }
             }
+            let label = label_of_ty(famous_defs, config, &ty)?;
             acc.push(InlayHint {
+                needs_resolve: label.needs_resolve(),
                 range: expr.syntax().text_range(),
                 kind: InlayKind::Chaining,
-                label: label_of_ty(famous_defs, config, &ty)?,
+                label,
                 text_edit: None,
                 position: InlayHintPosition::After,
                 pad_left: true,
@@ -128,6 +130,7 @@ fn main() {
                             "",
                         ],
                         text_edit: None,
+                        needs_resolve: true,
                     },
                     InlayHint {
                         range: 147..154,
@@ -152,6 +155,7 @@ fn main() {
                             "",
                         ],
                         text_edit: None,
+                        needs_resolve: true,
                     },
                 ]
             "#]],
@@ -221,6 +225,7 @@ fn main() {
                             "",
                         ],
                         text_edit: None,
+                        needs_resolve: true,
                     },
                     InlayHint {
                         range: 143..179,
@@ -245,6 +250,7 @@ fn main() {
                             "",
                         ],
                         text_edit: None,
+                        needs_resolve: true,
                     },
                 ]
             "#]],
@@ -298,6 +304,7 @@ fn main() {
                             "",
                         ],
                         text_edit: None,
+                        needs_resolve: true,
                     },
                     InlayHint {
                         range: 143..179,
@@ -322,6 +329,7 @@ fn main() {
                             "",
                         ],
                         text_edit: None,
+                        needs_resolve: true,
                     },
                 ]
             "#]],
@@ -389,6 +397,7 @@ fn main() {
                             "<i32, bool>>",
                         ],
                         text_edit: None,
+                        needs_resolve: true,
                     },
                     InlayHint {
                         range: 246..265,
@@ -426,6 +435,7 @@ fn main() {
                             "<i32, bool>>",
                         ],
                         text_edit: None,
+                        needs_resolve: true,
                     },
                 ]
             "#]],
@@ -495,6 +505,7 @@ fn main() {
                             " = ()>",
                         ],
                         text_edit: None,
+                        needs_resolve: true,
                     },
                     InlayHint {
                         range: 174..224,
@@ -532,6 +543,7 @@ fn main() {
                             " = ()>",
                         ],
                         text_edit: None,
+                        needs_resolve: true,
                     },
                     InlayHint {
                         range: 174..206,
@@ -569,6 +581,7 @@ fn main() {
                             " = ()>",
                         ],
                         text_edit: None,
+                        needs_resolve: true,
                     },
                     InlayHint {
                         range: 174..189,
@@ -593,6 +606,7 @@ fn main() {
                             "",
                         ],
                         text_edit: None,
+                        needs_resolve: true,
                     },
                 ]
             "#]],
@@ -655,6 +669,7 @@ fn main() {
                                 ],
                             },
                         ),
+                        needs_resolve: true,
                     },
                     InlayHint {
                         range: 145..185,
@@ -679,6 +694,7 @@ fn main() {
                             "",
                         ],
                         text_edit: None,
+                        needs_resolve: true,
                     },
                     InlayHint {
                         range: 145..168,
@@ -703,6 +719,7 @@ fn main() {
                             "",
                         ],
                         text_edit: None,
+                        needs_resolve: true,
                     },
                     InlayHint {
                         range: 222..228,
@@ -725,6 +742,7 @@ fn main() {
                             },
                         ],
                         text_edit: None,
+                        needs_resolve: true,
                     },
                 ]
             "#]],

crates/ide/src/inlay_hints/closing_brace.rs

@@ -109,6 +109,7 @@ pub(super) fn hints(
 
     let linked_location = name_range.map(|range| FileRange { file_id, range });
     acc.push(InlayHint {
+        needs_resolve: linked_location.is_some(),
         range: closing_token.text_range(),
         kind: InlayKind::ClosingBrace,
         label: InlayHintLabel::simple(label, None, linked_location),

crates/ide/src/inlay_hints/closure_captures.rs

@@ -31,9 +31,10 @@ pub(super) fn hints(
             let range = closure.syntax().first_token()?.prev_token()?.text_range();
             let range = TextRange::new(range.end() - TextSize::from(1), range.end());
             acc.push(InlayHint {
+                needs_resolve: false,
                 range,
                 kind: InlayKind::ClosureCapture,
-                label: InlayHintLabel::simple("move", None, None),
+                label: InlayHintLabel::from("move"),
                 text_edit: None,
                 position: InlayHintPosition::After,
                 pad_left: false,
@@ -43,6 +44,7 @@ pub(super) fn hints(
         }
     };
     acc.push(InlayHint {
+        needs_resolve: false,
         range: move_kw_range,
         kind: InlayKind::ClosureCapture,
         label: InlayHintLabel::from("("),
@@ -59,23 +61,25 @@ pub(super) fn hints(
         // force cache the source file, otherwise sema lookup will potentially panic
         _ = sema.parse_or_expand(source.file());
 
+        let label = InlayHintLabel::simple(
+            format!(
+                "{}{}",
+                match capture.kind() {
+                    hir::CaptureKind::SharedRef => "&",
+                    hir::CaptureKind::UniqueSharedRef => "&unique ",
+                    hir::CaptureKind::MutableRef => "&mut ",
+                    hir::CaptureKind::Move => "",
+                },
+                capture.display_place(sema.db)
+            ),
+            None,
+            source.name().and_then(|name| name.syntax().original_file_range_opt(sema.db)),
+        );
         acc.push(InlayHint {
+            needs_resolve: label.needs_resolve(),
             range: move_kw_range,
             kind: InlayKind::ClosureCapture,
-            label: InlayHintLabel::simple(
+            label,
-                format!(
-                    "{}{}",
-                    match capture.kind() {
-                        hir::CaptureKind::SharedRef => "&",
-                        hir::CaptureKind::UniqueSharedRef => "&unique ",
-                        hir::CaptureKind::MutableRef => "&mut ",
-                        hir::CaptureKind::Move => "",
-                    },
-                    capture.display_place(sema.db)
-                ),
-                None,
-                source.name().and_then(|name| name.syntax().original_file_range_opt(sema.db)),
-            ),
             text_edit: None,
             position: InlayHintPosition::After,
             pad_left: false,
@@ -84,9 +88,10 @@ pub(super) fn hints(
 
         if idx != last {
             acc.push(InlayHint {
+                needs_resolve: false,
                 range: move_kw_range,
                 kind: InlayKind::ClosureCapture,
-                label: InlayHintLabel::simple(", ", None, None),
+                label: InlayHintLabel::from(", "),
                 text_edit: None,
                 position: InlayHintPosition::After,
                 pad_left: false,
@@ -95,6 +100,7 @@ pub(super) fn hints(
         }
     }
     acc.push(InlayHint {
+        needs_resolve: false,
         range: move_kw_range,
         kind: InlayKind::ClosureCapture,
         label: InlayHintLabel::from(")"),

crates/ide/src/inlay_hints/closure_ret.rs

@@ -64,6 +64,7 @@ pub(super) fn hints(
     };
 
     acc.push(InlayHint {
+        needs_resolve: label.needs_resolve() || text_edit.is_some(),
         range: param_list.syntax().text_range(),
         kind: InlayKind::Type,
         label,

crates/ide/src/inlay_hints/discriminant.rs

@@ -79,6 +79,7 @@ fn variant_hints(
         None,
     );
     acc.push(InlayHint {
+        needs_resolve: label.needs_resolve(),
         range: match eq_token {
             Some(t) => range.cover(t.text_range()),
             _ => range,

crates/ide/src/inlay_hints/fn_lifetime_fn.rs

@@ -22,6 +22,7 @@ pub(super) fn hints(
     }
 
     let mk_lt_hint = |t: SyntaxToken, label: String| InlayHint {
+        needs_resolve: false,
         range: t.text_range(),
         kind: InlayKind::Lifetime,
         label: label.into(),
@@ -185,6 +186,7 @@ pub(super) fn hints(
             let angle_tok = gpl.l_angle_token()?;
             let is_empty = gpl.generic_params().next().is_none();
             acc.push(InlayHint {
+                needs_resolve: false,
                 range: angle_tok.text_range(),
                 kind: InlayKind::Lifetime,
                 label: format!(
@@ -200,6 +202,7 @@ pub(super) fn hints(
             });
         }
         (None, allocated_lifetimes) => acc.push(InlayHint {
+            needs_resolve: false,
             range: func.name()?.syntax().text_range(),
             kind: InlayKind::GenericParamList,
             label: format!("<{}>", allocated_lifetimes.iter().format(", "),).into(),

crates/ide/src/inlay_hints/implicit_static.rs

@@ -31,9 +31,10 @@ pub(super) fn hints(
         if ty.lifetime().is_none() {
             let t = ty.amp_token()?;
             acc.push(InlayHint {
+                needs_resolve: false,
                 range: t.text_range(),
                 kind: InlayKind::Lifetime,
-                label: "'static".to_owned().into(),
+                label: "'static".into(),
                 text_edit: None,
                 position: InlayHintPosition::After,
                 pad_left: false,

crates/ide/src/inlay_hints/param_name.rs

@@ -57,6 +57,7 @@ pub(super) fn hints(
             let label =
                 InlayHintLabel::simple(format!("{param_name}{colon}"), None, linked_location);
             InlayHint {
+                needs_resolve: label.needs_resolve(),
                 range,
                 kind: InlayKind::Parameter,
                 label,

crates/rust-analyzer/src/lsp/to_proto.rs

@@ -442,13 +442,15 @@ pub(crate) fn inlay_hint(
     file_id: FileId,
     inlay_hint: InlayHint,
 ) -> Cancellable<lsp_types::InlayHint> {
-    let (label, tooltip) = inlay_hint_label(snap, fields_to_resolve, inlay_hint.label)?;
+    let needs_resolve = inlay_hint.needs_resolve;
-    let data = if fields_to_resolve.can_resolve() {
+    let (label, tooltip) =
+        inlay_hint_label(snap, fields_to_resolve, needs_resolve, inlay_hint.label)?;
+    let data = if needs_resolve && fields_to_resolve.can_resolve() {
         Some(to_value(lsp_ext::InlayHintResolveData { file_id: file_id.0 }).unwrap())
     } else {
         None
     };
-    let text_edits = if fields_to_resolve.resolve_text_edits {
+    let text_edits = if needs_resolve && fields_to_resolve.resolve_text_edits {
         None
     } else {
         inlay_hint.text_edit.map(|it| text_edit_vec(line_index, it))
@@ -476,12 +478,13 @@ pub(crate) fn inlay_hint(
 fn inlay_hint_label(
     snap: &GlobalStateSnapshot,
     fields_to_resolve: &InlayFieldsToResolve,
+    needs_resolve: bool,
     mut label: InlayHintLabel,
 ) -> Cancellable<(lsp_types::InlayHintLabel, Option<lsp_types::InlayHintTooltip>)> {
     let res = match &*label.parts {
         [InlayHintLabelPart { linked_location: None, .. }] => {
             let InlayHintLabelPart { text, tooltip, .. } = label.parts.pop().unwrap();
-            let hint_tooltip = if fields_to_resolve.resolve_hint_tooltip {
+            let hint_tooltip = if needs_resolve && fields_to_resolve.resolve_hint_tooltip {
                 None
             } else {
                 match tooltip {
@@ -504,7 +507,7 @@ fn inlay_hint_label(
                 .parts
                 .into_iter()
                 .map(|part| {
-                    let tooltip = if fields_to_resolve.resolve_label_tooltip {
+                    let tooltip = if needs_resolve && fields_to_resolve.resolve_label_tooltip {
                         None
                     } else {
                         match part.tooltip {
@@ -522,7 +525,7 @@ fn inlay_hint_label(
                             None => None,
                         }
                     };
-                    let location = if fields_to_resolve.resolve_label_location {
+                    let location = if needs_resolve && fields_to_resolve.resolve_label_location {
                         None
                     } else {
                         part.linked_location.map(|range| location(snap, range)).transpose()?