js: Print different type for each kind of ECMAScript function object

Instead of just printing 'ECMAScriptFunctionObject' (and leaking an
implementation detail in the process - this is not a public facing name)
let's instead print a different type string for each function kind, and
only keep the old class_name() printing for other JS::FunctionObject
subclasses.

1 files changed, 21 insertions, 1 deletions

diff --git a/Userland/Utilities/js.cpp b/Userland/Utilities/js.cpp
index 8aec97372f..bd840cbfcb 100644
--- a/Userland/Utilities/js.cpp
+++ b/Userland/Utilities/js.cpp
@@ -316,7 +316,27 @@ static void print_object(JS::Object& object, HashTable<JS::Object*>& seen_object
 
 static void print_function(JS::Object const& object, HashTable<JS::Object*>&)
 {
-    print_type(object.class_name());
+    if (is<JS::ECMAScriptFunctionObject>(object)) {
+        auto const& function = static_cast<JS::ECMAScriptFunctionObject const&>(object);
+        switch (function.kind()) {
+        case JS::FunctionKind::Normal:
+            print_type("Function");
+            break;
+        case JS::FunctionKind::Generator:
+            print_type("GeneratorFunction");
+            break;
+        case JS::FunctionKind::Async:
+            print_type("AsyncFunction");
+            break;
+        case JS::FunctionKind::AsyncGenerator:
+            print_type("AsyncGeneratorFunction");
+            break;
+        default:
+            VERIFY_NOT_REACHED();
+        }
+    } else {
+        print_type(object.class_name());
+    }
     if (is<JS::ECMAScriptFunctionObject>(object))
         js_out(" {}", static_cast<JS::ECMAScriptFunctionObject const&>(object).name());
     else if (is<JS::NativeFunction>(object))