minor: improve readability

crates/parser/src/grammar/generic_params.rs

@@ -14,12 +14,20 @@ fn generic_param_list(p: &mut Parser) {
     p.bump(T![<]);
 
     while !p.at(EOF) && !p.at(T![>]) {
-        let m = p.start();
+        generic_param(p);
+        if !p.at(T![>]) && !p.expect(T![,]) {
+            break;
+        }
+    }
+    p.expect(T![>]);
+    m.complete(p, GENERIC_PARAM_LIST);
+}
 
-        // test generic_param_list_param_attribute
+fn generic_param(p: &mut Parser) {
+    let m = p.start();
+    // test generic_param_attribute
     // fn foo<#[lt_attr] 'a, #[t_attr] T>() {}
     attributes::outer_attrs(p);
-
     match p.current() {
         LIFETIME_IDENT => lifetime_param(p, m),
         IDENT => type_param(p, m),
@@ -29,12 +37,6 @@ fn generic_param_list(p: &mut Parser) {
             p.err_and_bump("expected type parameter")
         }
     }
-        if !p.at(T![>]) && !p.expect(T![,]) {
-            break;
-        }
-    }
-    p.expect(T![>]);
-    m.complete(p, GENERIC_PARAM_LIST);
 }
 
 // test lifetime_param