Rust: Add custom toString predicate for path expression

rust/ql/lib/codeql/rust/elements/internal/PathExprImpl.qll

@@ -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 `PathExpr`.
  *
@@ -12,6 +11,7 @@ private import codeql.rust.elements.internal.generated.PathExpr
  * be referenced directly.
  */
 module Impl {
+  // the following QLdoc is generated: if you need to edit it, do it in the schema file
   /**
    * A path expression. For example:
    * ```rust
@@ -21,5 +21,7 @@ module Impl {
    * let z = <TypeRef as Trait>::foo;
    * ```
    */
-  class PathExpr extends Generated::PathExpr { }
+  class PathExpr extends Generated::PathExpr {
+    override string toString() { result = this.getPath().toString() }
+  }
 }

rust/ql/test/extractor-tests/generated/BinaryExpr/BinaryExpr_getLhs.expected

@@ -1,5 +1,5 @@
-| gen_binary_expr.rs:5:5:5:9 | ... + ... | gen_binary_expr.rs:5:5:5:5 | PathExpr |
-| gen_binary_expr.rs:6:5:6:10 | ... && ... | gen_binary_expr.rs:6:5:6:5 | PathExpr |
-| gen_binary_expr.rs:7:5:7:10 | ... <= ... | gen_binary_expr.rs:7:5:7:5 | PathExpr |
-| gen_binary_expr.rs:8:5:8:9 | ... = ... | gen_binary_expr.rs:8:5:8:5 | PathExpr |
-| gen_binary_expr.rs:9:5:9:10 | ... += ... | gen_binary_expr.rs:9:5:9:5 | PathExpr |
+| gen_binary_expr.rs:5:5:5:9 | ... + ... | gen_binary_expr.rs:5:5:5:5 | x |
+| gen_binary_expr.rs:6:5:6:10 | ... && ... | gen_binary_expr.rs:6:5:6:5 | x |
+| gen_binary_expr.rs:7:5:7:10 | ... <= ... | gen_binary_expr.rs:7:5:7:5 | x |
+| gen_binary_expr.rs:8:5:8:9 | ... = ... | gen_binary_expr.rs:8:5:8:5 | x |
+| gen_binary_expr.rs:9:5:9:10 | ... += ... | gen_binary_expr.rs:9:5:9:5 | x |

rust/ql/test/extractor-tests/generated/BinaryExpr/BinaryExpr_getRhs.expected

@@ -1,5 +1,5 @@
-| gen_binary_expr.rs:5:5:5:9 | ... + ... | gen_binary_expr.rs:5:9:5:9 | PathExpr |
-| gen_binary_expr.rs:6:5:6:10 | ... && ... | gen_binary_expr.rs:6:10:6:10 | PathExpr |
-| gen_binary_expr.rs:7:5:7:10 | ... <= ... | gen_binary_expr.rs:7:10:7:10 | PathExpr |
-| gen_binary_expr.rs:8:5:8:9 | ... = ... | gen_binary_expr.rs:8:9:8:9 | PathExpr |
-| gen_binary_expr.rs:9:5:9:10 | ... += ... | gen_binary_expr.rs:9:10:9:10 | PathExpr |
+| gen_binary_expr.rs:5:5:5:9 | ... + ... | gen_binary_expr.rs:5:9:5:9 | y |
+| gen_binary_expr.rs:6:5:6:10 | ... && ... | gen_binary_expr.rs:6:10:6:10 | y |
+| gen_binary_expr.rs:7:5:7:10 | ... <= ... | gen_binary_expr.rs:7:10:7:10 | y |
+| gen_binary_expr.rs:8:5:8:9 | ... = ... | gen_binary_expr.rs:8:9:8:9 | y |
+| gen_binary_expr.rs:9:5:9:10 | ... += ... | gen_binary_expr.rs:9:10:9:10 | y |

rust/ql/test/extractor-tests/generated/CallExpr/CallExpr_getExpr.expected

@@ -1,4 +1,4 @@
-| gen_call_expr.rs:5:5:5:11 | CallExpr | gen_call_expr.rs:5:5:5:7 | PathExpr |
-| gen_call_expr.rs:6:5:6:23 | CallExpr | gen_call_expr.rs:6:5:6:19 | PathExpr |
+| gen_call_expr.rs:5:5:5:11 | CallExpr | gen_call_expr.rs:5:5:5:7 | foo |
+| gen_call_expr.rs:6:5:6:23 | CallExpr | gen_call_expr.rs:6:5:6:19 | foo::<...> |
 | gen_call_expr.rs:7:5:7:14 | CallExpr | gen_call_expr.rs:7:5:7:10 | IndexExpr |
-| gen_call_expr.rs:8:5:8:10 | CallExpr | gen_call_expr.rs:8:5:8:7 | PathExpr |
+| gen_call_expr.rs:8:5:8:10 | CallExpr | gen_call_expr.rs:8:5:8:7 | foo |

rust/ql/test/extractor-tests/generated/CastExpr/CastExpr_getExpr.expected

@@ -1 +1 @@
-| gen_cast_expr.rs:5:5:5:16 | CastExpr | gen_cast_expr.rs:5:5:5:9 | PathExpr |
+| gen_cast_expr.rs:5:5:5:16 | CastExpr | gen_cast_expr.rs:5:5:5:9 | value |

rust/ql/test/extractor-tests/generated/FieldExpr/FieldExpr_getExpr.expected

@@ -1 +1 @@
-| gen_field_expr.rs:5:5:5:9 | FieldExpr | gen_field_expr.rs:5:5:5:5 | PathExpr |
+| gen_field_expr.rs:5:5:5:9 | FieldExpr | gen_field_expr.rs:5:5:5:5 | x |

rust/ql/test/extractor-tests/generated/IndexExpr/IndexExpr_getBase.expected

@@ -1,2 +1,2 @@
-| gen_index_expr.rs:5:5:5:12 | IndexExpr | gen_index_expr.rs:5:5:5:8 | PathExpr |
-| gen_index_expr.rs:6:5:6:12 | IndexExpr | gen_index_expr.rs:6:5:6:8 | PathExpr |
+| gen_index_expr.rs:5:5:5:12 | IndexExpr | gen_index_expr.rs:5:5:5:8 | list |
+| gen_index_expr.rs:6:5:6:12 | IndexExpr | gen_index_expr.rs:6:5:6:8 | list |

rust/ql/test/extractor-tests/generated/MacroItems/CONSISTENCY/DataFlowConsistency.expected

@@ -3,6 +3,6 @@ uniqueNodeLocation
 | file://:0:0:0:0 | ... .unwrap(...) | Node should have one location but has 0. |
 | file://:0:0:0:0 | BlockExpr | Node should have one location but has 0. |
 | file://:0:0:0:0 | Param | Node should have one location but has 0. |
-| file://:0:0:0:0 | PathExpr | Node should have one location but has 0. |
+| file://:0:0:0:0 | path | Node should have one location but has 0. |
 missingLocation
 | Nodes without location: 5 |

rust/ql/test/extractor-tests/generated/MethodCallExpr/MethodCallExpr_getReceiver.expected

@@ -1,2 +1,2 @@
-| gen_method_call_expr.rs:5:5:5:13 | ... .foo(...) | gen_method_call_expr.rs:5:5:5:5 | PathExpr |
-| gen_method_call_expr.rs:6:5:6:25 | ... .foo(...) | gen_method_call_expr.rs:6:5:6:5 | PathExpr |
+| gen_method_call_expr.rs:5:5:5:13 | ... .foo(...) | gen_method_call_expr.rs:5:5:5:5 | x |
+| gen_method_call_expr.rs:6:5:6:25 | ... .foo(...) | gen_method_call_expr.rs:6:5:6:5 | x |

rust/ql/test/extractor-tests/generated/PathExpr/CONSISTENCY/DataFlowConsistency.expected

@@ -0,0 +1,3 @@
+uniqueNodeToString
+| gen_path_expr.rs:7:13:7:20 | (no string representation) | Node should have one toString but has 0. |
+| gen_path_expr.rs:8:13:8:35 | (no string representation) | Node should have one toString but has 0. |

rust/ql/test/extractor-tests/generated/PathExpr/PathExpr.expected

@@ -1,4 +1,4 @@
-| gen_path_expr.rs:5:13:5:20 | PathExpr | getNumberOfAttrs: | 0 | hasPath: | yes |
-| gen_path_expr.rs:6:13:6:20 | PathExpr | getNumberOfAttrs: | 0 | hasPath: | yes |
-| gen_path_expr.rs:7:13:7:20 | PathExpr | getNumberOfAttrs: | 0 | hasPath: | yes |
-| gen_path_expr.rs:8:13:8:35 | PathExpr | getNumberOfAttrs: | 0 | hasPath: | yes |
+| gen_path_expr.rs:5:13:5:20 | variable | getNumberOfAttrs: | 0 | hasPath: | yes |
+| gen_path_expr.rs:6:13:6:20 | foo::bar | getNumberOfAttrs: | 0 | hasPath: | yes |
+| gen_path_expr.rs:7:13:7:20 | (no string representation) | getNumberOfAttrs: | 0 | hasPath: | yes |
+| gen_path_expr.rs:8:13:8:35 | (no string representation) | getNumberOfAttrs: | 0 | hasPath: | yes |

rust/ql/test/extractor-tests/generated/PathExpr/PathExpr_getPath.expected

@@ -1,4 +1,4 @@
-| gen_path_expr.rs:5:13:5:20 | PathExpr | gen_path_expr.rs:5:13:5:20 | variable |
-| gen_path_expr.rs:6:13:6:20 | PathExpr | gen_path_expr.rs:6:13:6:20 | foo::bar |
-| gen_path_expr.rs:7:13:7:20 | PathExpr | gen_path_expr.rs:7:13:7:20 | (no string representation) |
-| gen_path_expr.rs:8:13:8:35 | PathExpr | gen_path_expr.rs:8:13:8:35 | (no string representation) |
+| gen_path_expr.rs:5:13:5:20 | variable | gen_path_expr.rs:5:13:5:20 | variable |
+| gen_path_expr.rs:6:13:6:20 | foo::bar | gen_path_expr.rs:6:13:6:20 | foo::bar |
+| gen_path_expr.rs:7:13:7:20 | (no string representation) | gen_path_expr.rs:7:13:7:20 | (no string representation) |
+| gen_path_expr.rs:8:13:8:35 | (no string representation) | gen_path_expr.rs:8:13:8:35 | (no string representation) |

rust/ql/test/extractor-tests/generated/PrefixExpr/PrefixExpr_getExpr.expected

@@ -1,3 +1,3 @@
 | gen_prefix_expr.rs:5:13:5:15 | - ... | gen_prefix_expr.rs:5:14:5:15 | 42 |
 | gen_prefix_expr.rs:6:13:6:17 | ! ... | gen_prefix_expr.rs:6:14:6:17 | true |
-| gen_prefix_expr.rs:7:13:7:16 | * ... | gen_prefix_expr.rs:7:14:7:16 | PathExpr |
+| gen_prefix_expr.rs:7:13:7:16 | * ... | gen_prefix_expr.rs:7:14:7:16 | ptr |

rust/ql/test/extractor-tests/generated/RefExpr/RefExpr_getExpr.expected

@@ -1,4 +1,4 @@
-| gen_ref_expr.rs:5:25:5:28 | RefExpr | gen_ref_expr.rs:5:26:5:28 | PathExpr |
-| gen_ref_expr.rs:6:23:6:30 | RefExpr | gen_ref_expr.rs:6:28:6:30 | PathExpr |
-| gen_ref_expr.rs:7:35:7:48 | RefExpr | gen_ref_expr.rs:7:46:7:48 | PathExpr |
-| gen_ref_expr.rs:8:33:8:44 | RefExpr | gen_ref_expr.rs:8:42:8:44 | PathExpr |
+| gen_ref_expr.rs:5:25:5:28 | RefExpr | gen_ref_expr.rs:5:26:5:28 | foo |
+| gen_ref_expr.rs:6:23:6:30 | RefExpr | gen_ref_expr.rs:6:28:6:30 | foo |
+| gen_ref_expr.rs:7:35:7:48 | RefExpr | gen_ref_expr.rs:7:46:7:48 | foo |
+| gen_ref_expr.rs:8:33:8:44 | RefExpr | gen_ref_expr.rs:8:42:8:44 | foo |