rust generator: fix enum member comments (#4911)

src/idl_gen_rust.cpp

@@ -555,7 +555,6 @@ class RustGenerator : public BaseGenerator {
   void GenEnum(const EnumDef &enum_def) {
     code_.SetValue("ENUM_NAME", Name(enum_def));
     code_.SetValue("BASE_TYPE", GetEnumTypeForDecl(enum_def.underlying_type));
-    code_.SetValue("SEP", "");
 
     GenComment(enum_def.doc_comment);
     code_ += "#[allow(non_camel_case_types)]";
@@ -572,8 +571,7 @@ class RustGenerator : public BaseGenerator {
       GenComment(ev.doc_comment, "  ");
       code_.SetValue("KEY", Name(ev));
       code_.SetValue("VALUE", NumToString(ev.value));
-      code_ += "{{SEP}}  {{KEY}} = {{VALUE}}\\";
-      code_.SetValue("SEP", ",\n");
+      code_ += "  {{KEY}} = {{VALUE}},";
 
       minv = !minv || minv->value > ev.value ? &ev : minv;
       maxv = !maxv || maxv->value < ev.value ? &ev : maxv;

tests/monster_test_generated.rs

@@ -169,7 +169,8 @@ pub mod example {
 pub enum Color {
   Red = 1,
   Green = 2,
-  Blue = 8
+  Blue = 8,
+
 }
 
 const ENUM_MIN_COLOR: i8 = 1;
@@ -237,7 +238,8 @@ pub enum Any {
   NONE = 0,
   Monster = 1,
   TestSimpleTableWithEnum = 2,
-  MyGame_Example2_Monster = 3
+  MyGame_Example2_Monster = 3,
+
 }
 
 const ENUM_MIN_ANY: u8 = 0;

tests/namespace_test/namespace_test1_generated.rs

@@ -30,7 +30,8 @@ pub mod namespace_b {
 pub enum EnumInNestedNS {
   A = 0,
   B = 1,
-  C = 2
+  C = 2,
+
 }
 
 const ENUM_MIN_ENUM_IN_NESTED_N_S: i8 = 0;