Simplifying rust example generates warnings

[dabrahams]

If you apply this patch and build the rust example, it will cause warnings in generated files, which I don't seem to have any control over.

Warnings

warning: unused import: `dparser_lib::bindings::*`
 --> /Users/dave/src/dparser/rust/target/debug/build/example-4d9bfc540e29f338/out/actions.rs:2:5
  |
2 | use dparser_lib::bindings::*;
  |     ^^^^^^^^^^^^^^^^^^^^^^^^
  |
  = note: `#[warn(unused_imports)]` on by default

warning: unused import: `std::os::raw::c_void`
 --> /Users/dave/src/dparser/rust/target/debug/build/example-4d9bfc540e29f338/out/actions.rs:5:5
  |
5 | use std::os::raw::c_void;
  |     ^^^^^^^^^^^^^^^^^^^^

Patch

diff --git a/rust/example/src/main.rs b/rust/example/src/main.rs
index b9fd99e..c917552 100644
--- a/rust/example/src/main.rs
+++ b/rust/example/src/main.rs
@@ -7,7 +7,7 @@ unsafe extern "C" {
 }
 
 fn main() {
-    let input_string = "a x  b uvu";
+    let input_string = "xxx";
 
     println!("Parsing input: '{}'", input_string);
 
@@ -15,7 +15,7 @@ fn main() {
     let mut parser: Parser<GlobalsStruct, NodeStruct> =
         { Parser::new(&raw mut parser_tables_gram) };
     parser.set_save_parse_tree(true);
-    let mut initial_globals = GlobalsStruct { a: 0, b: 0 };
+    let mut initial_globals = GlobalsStruct { /*a: 0, b: 0*/ };
     let result: Option<ParseNodeWrapper<'_, Parser<GlobalsStruct, NodeStruct>>> =
         parser.parse(input_string, &mut initial_globals);
 
diff --git a/rust/example/src/my_grammar.g b/rust/example/src/my_grammar.g
index c2be3d8..ac50d59 100644
--- a/rust/example/src/my_grammar.g
+++ b/rust/example/src/my_grammar.g
@@ -1,22 +1,20 @@
 {
-use dparser_lib;
 
 #[derive(Debug, Default)]
 pub struct GlobalsStruct {
-  a: i32,
-  b: i32,
 }
 
 #[derive(Debug, Default, Clone)]
 pub struct NodeStruct {
   x: i32,
-  y: i32,
 }
-
-pub const INDEX_OF_A:u32 = ${nterm A};
-
 }
 
+test: (a | b)*;
+a: 'xx' $term 2;
+b: 'x' $term 1;
+
+/*
 start: S T {
   println!("start: S global a {} x {}", $g.a, $0.x);
   *$$ = $0.clone();
@@ -63,3 +61,4 @@ T: U* {
 };
 
 U: 'u' | 'v';;
+*/