expose config for hover struct field display

Author: Young-Flash

crates/rust-analyzer/src/config.rs

@@ -375,6 +375,8 @@ config_data! {
         /// How to render the size information in a memory layout hover.
         hover_memoryLayout_size: Option<MemoryLayoutHoverRenderKindDef> = "\"both\"",
 
+        /// How many fields of a struct to display when hovering a struct.
+        hover_show_structFields: Option<usize> = "null",
         /// How many associated items of a trait to display when hovering a trait.
         hover_show_traitAssocItems: Option<usize> = "null",
 
@@ -1690,6 +1692,7 @@ impl Config {
             },
             keywords: self.data.hover_documentation_keywords_enable,
             max_trait_assoc_items_count: self.data.hover_show_traitAssocItems,
+            max_struct_field_count: self.data.hover_show_structFields,
         }
     }
 

docs/user/generated_config.adoc

@@ -520,6 +520,11 @@ How to render the offset information in a memory layout hover.
 --
 How to render the size information in a memory layout hover.
 --
+[[rust-analyzer.hover.show.structFields]]rust-analyzer.hover.show.structFields (default: `null`)::
++
+--
+How many fields of a struct to display when hovering a struct.
+--
 [[rust-analyzer.hover.show.traitAssocItems]]rust-analyzer.hover.show.traitAssocItems (default: `null`)::
 +
 --

editors/code/package.json

@@ -1144,6 +1144,15 @@
                         }
                     ]
                 },
+                "rust-analyzer.hover.show.structFields": {
+                    "markdownDescription": "How many fields of a struct to display when hovering a struct.",
+                    "default": null,
+                    "type": [
+                        "null",
+                        "integer"
+                    ],
+                    "minimum": 0
+                },
                 "rust-analyzer.hover.show.traitAssocItems": {
                     "markdownDescription": "How many associated items of a trait to display when hovering a trait.",
                     "default": null,