Implement Graph as an inert symbolic graph data structure

Author: ad-si

functions.csv

@@ -2391,7 +2391,7 @@ GradientOrientationFilter,,,,9,3143
 GrammarApply,,,,10,3947
 GrammarRules,,,,10,3862
 GrammarToken,,,,10,3717
-Graph,,,,8,303
+Graph,Represents a graph with vertices and edges,✅,pure,8,303
 Graph3D,,,,10,1740
 GraphAssortativity,,,,9,3440
 GraphAutomorphismGroup,,,,10,3862

src/evaluator/dispatch/mod.rs

@@ -1081,6 +1081,7 @@ pub fn evaluate_function_call_ast_inner(
     | "Alternatives"
     | "Offset"
     | "RowBox"
+    | "Graph"
     | "Entity" => {
       return Ok(Expr::FunctionCall {
         name: name.to_string(),

tests/interpreter_tests/graphics.rs

@@ -476,6 +476,10 @@ mod graphics {
         interpret("RowBox[{\"a\", \"+\", \"b\"}]").unwrap(),
         "RowBox[{a, +, b}]"
       );
+      assert_eq!(
+        interpret("Graph[{1 -> 2, 2 -> 3}]").unwrap(),
+        "Graph[{1 -> 2, 2 -> 3}]"
+      );
     }
 
     #[test]

tests/interpreter_tests/io.rs

@@ -619,11 +619,11 @@ mod unimplemented_warnings {
   #[test]
   fn known_wolfram_function_produces_warning() {
     clear_state();
-    let result = interpret_with_stdout("Graph[{1, 2, 3}]").unwrap();
-    assert_eq!(result.result, "Graph[{1, 2, 3}]");
+    let result = interpret_with_stdout("ZTransform[1, n, z]").unwrap();
+    assert_eq!(result.result, "ZTransform[1, n, z]");
     assert_eq!(result.warnings.len(), 1);
     assert!(result.warnings[0].contains("not yet implemented"));
-    assert!(result.warnings[0].contains("Graph["));
+    assert!(result.warnings[0].contains("ZTransform["));
   }
 
   #[test]
@@ -645,17 +645,18 @@ mod unimplemented_warnings {
   #[test]
   fn warning_not_in_stdout() {
     clear_state();
-    let result = interpret_with_stdout("Graph[{1}]").unwrap();
+    let result = interpret_with_stdout("ZTransform[1]").unwrap();
     assert!(!result.stdout.contains("not yet implemented"));
     assert!(!result.warnings.is_empty());
   }
 
   #[test]
   fn multiple_unimplemented_calls_consolidated_into_single_warning() {
     clear_state();
-    let result = interpret_with_stdout("{Graph[1], GridGraph[2]}").unwrap();
+    let result =
+      interpret_with_stdout("{ZTransform[1], GridGraph[2]}").unwrap();
     assert_eq!(result.warnings.len(), 1);
-    assert!(result.warnings[0].contains("Graph[1]"));
+    assert!(result.warnings[0].contains("ZTransform[1]"));
     assert!(result.warnings[0].contains("GridGraph[2]"));
     assert!(
       result.warnings[0].contains("are built-in Wolfram Language functions")