Rust: implement Use::toString

Author: aibaars

rust/ql/.generated.list

@@ -1,4 +1,3 @@
-// generated by codegen, remove this comment if you wish to edit this file
 /**
  * This module provides a hand-modifiable wrapper around the generated class `Use`.
  *
@@ -12,11 +11,14 @@ private import codeql.rust.elements.internal.generated.Use
  * be referenced directly.
  */
 module Impl {
+  // the following QLdoc is generated: if you need to edit it, do it in the schema file
   /**
    * A Use. For example:
    * ```rust
    * todo!()
    * ```
    */
-  class Use extends Generated::Use { }
+  class Use extends Generated::Use {
+    override string toStringImpl() { result = "use " + this.getUseTree() }
+  }
 }

rust/ql/.gitattributes

@@ -1,4 +1,3 @@
-// generated by codegen, remove this comment if you wish to edit this file
 /**
  * This module provides a hand-modifiable wrapper around the generated class `UseTree`.
  *
@@ -12,6 +11,7 @@ private import codeql.rust.elements.internal.generated.UseTree
  * be referenced directly.
  */
 module Impl {
+  // the following QLdoc is generated: if you need to edit it, do it in the schema file
   /**
    * A UseTree. For example:
    * ```rust
@@ -21,5 +21,17 @@ module Impl {
    * use std::collections::{self, HashMap, HashSet};
    * ```
    */
-  class UseTree extends Generated::UseTree { }
+  class UseTree extends Generated::UseTree {
+    override string toStringImpl() {
+      result =
+        this.getPath().toStringImpl() +
+          any(string list | if this.hasUseTreeList() then list = "::{...}" else list = "") +
+          any(string glob | if this.isGlob() then glob = "::*" else glob = "") +
+          any(string rename |
+            rename = " as " + this.getRename().getName().getText()
+            or
+            rename = "" and not this.hasRename()
+          )
+    }
+  }
 }