"""Execute the actual opt-in Load body; no native engine or GUI is launched."""
from policy_harness import ROOT, body, run
source=ROOT/'addons/core/Scripts/GameLib/ERR/ERR_DiagnosticNoSplash.c'
load=body(source,'override void Load()').replace('override void','void').replace('System.','System::').replace('super.Load()', 'Base::Load()')
run('''#include <cassert>
#include <string>
using string=std::string;
struct System {
 static bool noSplash, explicitScenario;
 static string project;
 static bool IsCLIParam(const char*) { return noSplash; }
 static bool GetCLIParam(const char*, string& value) {value=project;return explicitScenario;}
};
bool System::noSplash=false; bool System::explicitScenario=false; string System::project;
int diagnostics=0;
void Print(const char*) {diagnostics++;}
struct Base {
 int nativeLoads=0, s_iSplashShown=0;
 void Load(){nativeLoads++;s_iSplashShown++;}
};
struct Subject:Base {
 bool m_ERRDiagnosticSplashSkipped=false;
''' + load + '''
};
int main(){
 for(bool flag:{false,true}) for(bool explicitRequest:{false,true})
 for(const string& project:{string("core"),string("chat"),string(""),string("other")}) {
  System::noSplash=flag;System::explicitScenario=explicitRequest;System::project=project;
  diagnostics=0;Subject instance;
  instance.Load();instance.Load();instance.Load();
  bool selected=flag && explicitRequest && (project=="core" || project=="chat");
  assert(instance.nativeLoads==(selected ? 0 : 3));
  assert(instance.s_iSplashShown==(selected ? 1 : 3));
  assert(diagnostics==(selected ? 1 : 0));
  assert(instance.m_ERRDiagnosticSplashSkipped==selected);
 }
 // Recreated splash instance on addon reload remains independently bounded.
 System::noSplash=true;System::explicitScenario=true;System::project="core";
 Subject first,reloaded;diagnostics=0;
 first.Load();reloaded.Load();reloaded.Load();
 assert(first.s_iSplashShown==1 && reloaded.s_iSplashShown==1 && diagnostics==2);
}
''')
print('PASS: actual noSplash Load body requires both explicit diagnostic and noSplash, preserves vanilla otherwise, and handles repeated Load/reload')