// 执行call操作
private object applyCallOperator(string Identifier, string IdentifierLower, ASTNode_ArgList Args, int LineNumber)
{
object pNativeFunc = fetchValueOfIdentifier(Identifier, IdentifierLower, LineNumber);
if (pNativeFunc is NativeCallHandler == false)
{
throw new RuntimeException(LineNumber, String.Format("\"{0}\" is not callable.", Identifier));
}
NativeCallHandler pHandler = (NativeCallHandler)pNativeFunc;
object[] pArgs = null;
if (Args.Args.Count > 0)
{
pArgs = new object[Args.Args.Count];
for (int i = 0; i < Args.Args.Count; ++i)
{
// 计算参数
pArgs[i] = ExecExpression(Args.Args[i]);
}
}
// 调用函数
return(pHandler(this, pArgs, LineNumber));
}
/// <summary>
/// 注册原生函数
/// </summary>
/// <remarks>覆盖已有定义</remarks>
/// <param name="Identifier">标识符</param>
/// <param name="Handler">回调</param>
public void RegisterIdentifier(string Identifier, NativeCallHandler Handler)
{
string IdLower = Identifier.ToLower();
if (_Environment.ContainsKey(IdLower))
{
_Environment[IdLower] = Handler;
}
else
{
_Environment.Add(IdLower, Handler);
}
}
