C++ (Cpp) Shell::Start Examples

Example #1

File: Universe.cpp Project: jdegeete/SOMpp

void Universe::initialize(long _argc, char** _argv) {
#ifdef GENERATE_ALLOCATION_STATISTICS
    allocationStats["VMArray"] = {0,0};
#endif

    heapSize = 1 * 1024 * 1024;

    vector<StdString> argv = handleArguments(_argc, _argv);
    
    // remember file that was executed (for writing statistics)
    if (argv.size() > 0)
        bm_name = argv[0];

    Heap<HEAP_CLS>::InitializeHeap(heapSize);

    interpreter = new Interpreter();

#if CACHE_INTEGER
# warning is _store_ptr sufficient/correct here?
    // create prebuilt integers
    for (long it = INT_CACHE_MIN_VALUE; it <= INT_CACHE_MAX_VALUE; ++it) {
        prebuildInts[(unsigned long)(it - INT_CACHE_MIN_VALUE)] = _store_ptr(new (GetHeap<HEAP_CLS>()) VMInteger(it));
    }
#endif

    InitializeGlobals();

    VMObject* systemObject = NewInstance(load_ptr(systemClass));

    SetGlobal(SymbolForChars("nil"),    load_ptr(nilObject));
    SetGlobal(SymbolForChars("true"),   load_ptr(trueObject));
    SetGlobal(SymbolForChars("false"),  load_ptr(falseObject));
    SetGlobal(SymbolForChars("system"), systemObject);
    SetGlobal(SymbolForChars("System"), load_ptr(systemClass));
    SetGlobal(SymbolForChars("Block"),  load_ptr(blockClass));

    symbolIfTrue  = _store_ptr(SymbolForChars("ifTrue:"));
    symbolIfFalse = _store_ptr(SymbolForChars("ifFalse:"));

    

    VMMethod* bootstrapMethod = NewMethod(SymbolForChars("bootstrap"), 1, 0);
    bootstrapMethod->SetBytecode(0, BC_HALT);
    bootstrapMethod->SetNumberOfLocals(0);

    bootstrapMethod->SetMaximumNumberOfStackElements(2);
    bootstrapMethod->SetHolder(load_ptr(systemClass));

    if (argv.size() == 0) {
        Shell* shell = new Shell(bootstrapMethod);
        shell->Start();
        return;
    }

    /* only trace bootstrap if the number of cmd-line "-d"s is > 2 */
    short trace = 2 - dumpBytecodes;
    if (!(trace > 0))
        dumpBytecodes = 1;

    VMArray* argumentsArray = NewArrayFromStrings(argv);

    VMFrame* bootstrapFrame = interpreter->PushNewFrame(bootstrapMethod);
    bootstrapFrame->Push(systemObject);
    bootstrapFrame->Push(argumentsArray);

    VMInvokable* initialize = load_ptr(systemClass)->LookupInvokable(
                                            SymbolForChars("initialize:"));
    (*initialize)(bootstrapFrame);

    // reset "-d" indicator
    if (!(trace > 0))
        dumpBytecodes = 2 - trace;

    interpreter->Start();
}