limit struct field hover display nums

crates/hir/src/display.rs

@@ -185,21 +185,32 @@ impl HirDisplay for Struct {
                 write_where_clause(def_id, f)?;
             }
             StructKind::Record => {
+                if let Some(limit) = f.entity_limit {
                     let has_where_clause = write_where_clause(def_id, f)?;
                     let fields = self.fields(f.db);
+                    let count = fields.len().min(limit);
                     f.write_char(if !has_where_clause { ' ' } else { '\n' })?;
+                    if count == 0 {
                         if fields.is_empty() {
                             f.write_str("{}")?;
                         } else {
-                    f.write_str("{\n")?;
+                            f.write_str("{ /* … */ }")?;
-                    for field in self.fields(f.db) {
+                        }
+                    } else {
+                        f.write_str(" {\n")?;
+                        for field in &fields[..count] {
                             f.write_str("    ")?;
                             field.hir_fmt(f)?;
                             f.write_str(",\n")?;
                         }
+
+                        if fields.len() > count {
+                            f.write_str("    /* … */\n")?;
+                        }
                         f.write_str("}")?;
                     }
                 }
+            }
             StructKind::Unit => _ = write_where_clause(def_id, f)?,
         }
 

crates/ide/src/hover.rs

@@ -33,6 +33,7 @@ pub struct HoverConfig {
     pub keywords: bool,
     pub format: HoverDocFormat,
     pub max_trait_assoc_items_count: Option<usize>,
+    pub max_struct_field_count: Option<usize>,
 }
 
 #[derive(Copy, Clone, Debug, PartialEq, Eq)]

crates/ide/src/hover/render.rs

@@ -410,6 +410,9 @@ pub(super) fn definition(
         Definition::Trait(trait_) => {
             trait_.display_limited(db, config.max_trait_assoc_items_count).to_string()
         }
+        Definition::Adt(Adt::Struct(struct_)) => {
+            struct_.display_limited(db, config.max_struct_field_count).to_string()
+        }
         _ => def.label(db),
     };
     let docs = def.docs(db, famous_defs);

crates/ide/src/static_index.rs

@@ -167,6 +167,7 @@ impl StaticIndex<'_> {
             keywords: true,
             format: crate::HoverDocFormat::Markdown,
             max_trait_assoc_items_count: None,
+            max_struct_field_count: None,
         };
         let tokens = tokens.filter(|token| {
             matches!(