/// <summary>
/// 根据读取到param语法内容创建参数
/// </summary>
/// <param name="ctx">读取到的语法内容</param>
/// <returns>创建的参数</returns>
public Param CreateParam(InterpreterParser.ParamContext ctx)
{
if (ctx.ID().Length == 1)
{
return(new IdParam(ctx.ID()[0].GetText()));
}
else if (ctx.ID().Length == 2)
{
return(new IdIdParam(ctx.ID()[0].GetText(), ctx.ID()[1].GetText()));
}
else if (ctx.NUM() != null)
{
return(new NumParam(int.Parse(ctx.NUM().GetText())));
}
else if (ctx.STRING() != null)
{
return(new StringParam(ctx.STRING().GetText()));
}
else if (ctx.expr() != null)
{
return(new QueryParam(lastQuery));
}
else
{
throw new Exception("不支持的参数");
}
}
public override void ExitParam([NotNull] InterpreterParser.ParamContext context)
{
ParamStack.Push(CreateParam(context));
ParamsStack.Peek().Add(ParamStack.Pop());
}
public override void EnterParam([NotNull] InterpreterParser.ParamContext context)
{
}
