Method DispatchProperty

src/scripting/zscript/zcc_compile_doom.cpp:229–391

//==========================================================================

void ZCCDoomCompiler::DispatchProperty(FPropertyInfo *prop, ZCC_PropertyStmt *property, AActor *defaults, Baggage &bag)
{
	static TArray<FPropParam> params;
	static TArray<FString> strings;

	params.Clear();
	strings.Clear();
	params.Reserve(1);
	params[0].i = 0;
	if (prop->params[0] != '0')
	{
		if (property->Values == nullptr)
		{
			Error(property, "%s: arguments missing", prop->name);
			return;
		}
		const char * p = prop->params;
		auto exp = property->Values;

		FCompileContext ctx(OutNamespace, bag.Info->VMType, false, mVersion);
		while (true)
		{
			FPropParam conv;
			FPropParam pref;

			FxExpression *ex = ConvertNode(exp);
			ex = ex->Resolve(ctx);
			if (ex == nullptr)
			{
				return;
			}
			else if (!ex->isConstant())
			{
				// If we get TypeError, there has already been a message from deeper down so do not print another one.
				if (exp->Type != TypeError) Error(exp, "%s: non-constant parameter", prop->name);
				return;
			}
			conv.s = nullptr;
			pref.s = nullptr;
			pref.i = -1;
			switch ((*p) & 223)
			{

			case 'X':	// Expression in parentheses or number. We only support the constant here. The function will have to be handled by a separate property to get past the parser.
				conv.i = GetIntConst(ex, ctx);
				params.Push(conv);
				conv.exp = nullptr;
				break;

			case 'I':
			case 'M':	// special case for morph styles in DECORATE . This expression-aware parser will not need this.
			case 'N':	// special case for thing activations in DECORATE. This expression-aware parser will not need this.
				conv.i = GetIntConst(ex, ctx);
				break;

			case 'F':
				conv.d = GetFloatConst(ex, ctx);
				break;