refactor: remove repetitive string interpolation and doc changes

crates/ide-assists/src/handlers/generate_enum_projection_method.rs

@@ -161,27 +161,21 @@ fn generate_enum_projection_method(
 
             let field_type_syntax = field_type.syntax();
 
-            let method = if ctx.config.assist_emit_must_use
-            {
-                format!(
-                    "    #[must_use]
-    {vis}fn {fn_name}({self_param}) -> {return_prefix}{field_type_syntax}{return_suffix} {{
-        if let Self::{variant_name}{pattern_suffix} = self {{
-            {happy_case}({bound_name})
-        }} else {{
-            {sad_case}
-        }}
-    }}")
+            let must_use = if ctx.config.assist_emit_must_use {
+                "#[must_use]\n"
             } else {
-                format!(
-                    "    {vis}fn {fn_name}({self_param}) -> {return_prefix}{field_type_syntax}{return_suffix} {{
+                ""
+            };
+
+            let method = format!(
+                "    {must_use}{vis}fn {fn_name}({self_param}) -> {return_prefix}{field_type_syntax}{return_suffix} {{
         if let Self::{variant_name}{pattern_suffix} = self {{
             {happy_case}({bound_name})
         }} else {{
             {sad_case}
         }}
-    }}")
-            };
+    }}"
+            );
 
             add_method_to_adt(builder, &parent_enum, impl_def, &method);
         },

crates/rust-analyzer/src/config.rs

@@ -56,7 +56,7 @@ mod patch_old_style;
 // parsing the old name.
 config_data! {
     struct ConfigData {
-        /// Whether to insert must_use derive macro while generating `as_` methods
+        /// Whether to insert #[must_use] when generating `as_` methods
         /// for enum variants.
         assist_emitMustUse: bool               = "false",
         /// Placeholder expression to use for missing expressions in assists.

docs/user/generated_config.adoc

@@ -1,7 +1,7 @@
 [[rust-analyzer.assist.emitMustUse]]rust-analyzer.assist.emitMustUse (default: `false`)::
 +
 --
-Whether to insert must_use derive macro while generating `as_` methods
+Whether to insert #[must_use] when generating `as_` methods
 for enum variants.
 --
 [[rust-analyzer.assist.expressionFillDefault]]rust-analyzer.assist.expressionFillDefault (default: `"todo"`)::

editors/code/package.json

@@ -398,7 +398,7 @@
                 },
                 "$generated-start": {},
                 "rust-analyzer.assist.emitMustUse": {
-                    "markdownDescription": "Whether to insert must_use derive macro while generating `as_` methods\nfor enum variants.",
+                    "markdownDescription": "Whether to insert #[must_use] when generating `as_` methods\nfor enum variants.",
                     "default": false,
                     "type": "boolean"
                 },