internal CalculatorImpl(CommandProvider commandProvider)
{
_commands = commandProvider;
_tokenizer = new Tokenizer(GetAllOperators(_commands));
_scope = new Scope(); //scope lives with this instance
_opStack = new Stack<OpSlot>();
_valueStack = new Stack<ValueSlot>();
_tokenBuffer = new TokenBufferItem[2]; //need to look 2 ahead to decide type of operator (e.g. prefix or suffix)
_commands.loadConstants(_scope);
}
private static String[] GetAllOperators(CommandProvider commandProvider)
{
return commandProvider.GetOperators().Concat(new[] { ":=", "(", ")", "," }).OrderByDescending(x => x.Length).ToArray();
}
public CalculatorFactory(CommandConfigurer commandConfigurer)
{
commandProvider = new CommandProvider(commandConfigurer);
}