Seasonal greetings

Ho ho ho.

Tbr: santa@chromium.org
No-presubmit: true
Change-Id: Ida950937a352f32ccf8127907f623e92332f4806
Reviewed-on: https://chromium-review.googlesource.com/c/1390119Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#58459}

src/d8.cc

@@ -2932,6 +2932,25 @@ bool Shell::SetOptions(int argc, char* argv[]) {
   return true;
 }
 
+namespace {
+
+void SeasonalGreetings() {
+  if (Shell::script_executed()) return;
+  // clang-format off
+  printf(
+    "  .-\"\"-.                                                                                       \n"
+    " /,..___\\     __  __                         ____ _          _     _                            \n"
+    "() {_____}   |  \\/  | ___ _ __ _ __ _   _   / ___| |__  _ __(_)___| |_ _ __ ___   __ _ ___      \n"
+    "  (/-@-@-\\)  | |\\/| |/ _ \\ '__| '__| | | | | |   | '_ \\| '__| / __| __| '_ ` _ \\ / _` / __| \n"
+    "  {`-=^=-'}  | |  | |  __/ |  | |  | |_| | | |___| | | | |  | \\__ \\ |_| | | | | | (_| \\__ \\  \n"
+    "  {  `-'  }  |_|  |_|\\___|_|  |_|   \\__, |  \\____|_| |_|_|  |_|___/\\__|_| |_| |_|\\__,_|___/ \n"
+    "   {     }                          |___/                                                        \n"
+    "    `---'                                                                                        \n");
+  // clang-format on
+}
+
+}  // namespace
+
 int Shell::RunMain(Isolate* isolate, int argc, char* argv[], bool last_run) {
   for (int i = 1; i < options.num_isolates; ++i) {
     options.isolate_sources[i].StartExecuteInThread();
@@ -2953,6 +2972,7 @@ int Shell::RunMain(Isolate* isolate, int argc, char* argv[], bool last_run) {
       InspectorClient inspector_client(context, options.enable_inspector);
       PerIsolateData::RealmScope realm_scope(PerIsolateData::Get(isolate));
       options.isolate_sources[0].Execute(isolate);
+      SeasonalGreetings();
       CompleteMessageLoop(isolate);
     }
     if (!use_existing_context) {

src/d8.h

@@ -534,6 +534,7 @@ class Shell : public i::AllStatic {
   static char* ReadCharsFromTcpPort(const char* name, int* size_out);
 
   static void set_script_executed() { script_executed_.store(true); }
+  static bool script_executed() { return script_executed_.load(); }
   static bool use_interactive_shell() {
     return (options.interactive_shell || !script_executed_.load()) &&
            !options.test_shell;