public Script()
{
// 寄存器初始化
_ret_val = new Op {
type = OpType.Null
};
funcTable = new FuncTable();
symbolTable = new SymbolTable();
labelTable = new LabelTable();
stringTable = new StringTable();
instrStream = new InstrStream();
stack = new RuntimeStack();
// 初始化运行时堆栈大小
stack.SetStackSize(1024);
}
