/// <summary>
/// 解释器
/// </summary>
/// <param name="context"></param>
public void Interpreter(PlayContext context)
{
if (string.IsNullOrEmpty(context.PlayText))
{
return;
}
else
{
//取第一位
string playKey = context.PlayText.Substring(0, 1);
//去掉当前的音符
context.PlayText = context.PlayText.Substring(2);
double palyValue = Convert.ToDouble(context.PlayText.Substring(0, context.PlayText.IndexOf(" ")));
context.PlayText = context.PlayText.Substring(context.PlayText.IndexOf(" ") + 1);
this.Excute(playKey, palyValue);
}
}
static void Main(string[] args)
{
PlayContext context = new PlayContext();
//定义一首歌的语义
context.PlayText = "O 2 E 0.5 G 0.5 A 3 E 0.5 G 0.5 D 3 E 0.5 G 0.5 A 0.5 O 3 C 1 ";
Expression exrepssion = null;
try
{
while (!string.IsNullOrEmpty(context.PlayText))
{
string str = context.PlayText.Substring(0, 1);
switch (str)
{
case "O":
exrepssion = new Scale();
break;
case "C":
case "D":
case "E":
case "F":
case "G":
case "A":
case "B":
case "P":
exrepssion = new Note();
break;
}
exrepssion.Interpreter(context);
}
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
Console.ReadKey();
}