public override void Interpret(Context.Context context)
{
context.SkipToken("LOOP");
number = context.GetCurrentNumber();
context.NextToken();
// 循环语句中的表达式
commandNode = new ExpressionNode();
commandNode.Interpret(context);
}
public override void Interpret(Context.Context context)
{
name = context.GetCurrentToken();
context.SkipToken(name);
if (!name.Equals("PRINT", StringComparison.OrdinalIgnoreCase) &&
!name.Equals("BREAK", StringComparison.OrdinalIgnoreCase) &&
!name.Equals("SPACE", StringComparison.OrdinalIgnoreCase))
{
Console.WriteLine("非法命令！");
}
if (name.Equals("PRINT", StringComparison.OrdinalIgnoreCase))
{
text = context.GetCurrentToken();
context.NextToken();
}
}