/// <summary>
/// 复制当前函数实例
/// </summary>
/// <param name="pureFork">是否不要复制符号表</param>
/// <returns>新的符号实例</returns>
public SceneFunction Fork(bool pureFork)
{
SceneFunction nsf = new SceneFunction(this.Callname, this.ParentSceneName, this.Sa);
nsf.Param = this.Param;
if (!pureFork)
{
foreach (var svar in this.Symbols)
{
nsf.Symbols.Add(svar.Key, svar.Value);
}
}
return nsf;
}
/// <summary>
/// 函数调用
/// </summary>
/// <param name="function">函数模板实例</param>
/// <param name="args">参数列表</param>
public void CallFunction(SceneFunction function, List<object> args)
{
// 为模板创建一个分支实例
var callForker = function.Fork(true);
this.CallStack.Submit(callForker, args);
// 处理参数传递
var funcSymbols = callForker.Symbols;
for (int i = 0; i < args.Count; i++)
{
funcSymbols[callForker.Param[i].Substring(1)] = args[i];
}
}
/// <summary>
/// 将动作序列绑定到一个新的场景函数
/// </summary>
/// <param name="funcSa">动作序列</param>
/// <param name="sceneName">场景名称</param>
/// <returns>场景函数</returns>
private SceneFunction ParseSaToSF(SceneAction funcSa, string sceneName)
{
// 获得函数签名
string signature = funcSa.argsDict["sign"];
string[] signItem = signature.Split(new char[] { '(', ')' }, StringSplitOptions.RemoveEmptyEntries);
List<string> funcParas = new List<string>();
// 如果没有参数就跳过参数遍历
if (signItem.Length > 1)
{
string[] varItem = signItem[1].Split(new char[] { ',', ' ' }, StringSplitOptions.RemoveEmptyEntries);
foreach (string ivar in varItem)
{
funcParas.Add(ivar);
}
}
SceneFunction nsf = new SceneFunction(signItem[0].Trim(), sceneName, funcSa);
nsf.Param = funcParas;
return nsf;
}
/// <summary>
/// 向栈机提交一个函数调用
/// </summary>
/// <param name="sf">被调用函数的SceneFuction实例</param>
/// <param name="args">实参数列表</param>
/// <param name="offset">PC偏移量</param>
public void Submit(SceneFunction sf, List<object> args, int offset = 0)
{
// 处理形参顺序
string argc = String.Empty;
foreach (var arg in sf.Param)
{
argc += "," + arg;
}
if (argc.Length > 0)
{
argc = argc.Substring(1);
}
StackMachineFrame smf = new StackMachineFrame()
{
State = StackMachineState.FunctionCalling,
ScriptName = sf.Callname,
PC = offset,
IP = sf.Sa,
BindingFunction = sf,
Argv = args,
BindingFunctionName = String.Format("{0}?{1}", sf.GlobalName, this.coreStack.Count.ToString()),
BindingSceneName = sf.ParentSceneName,
Delay = TimeSpan.FromMilliseconds(0),
Tag = argc
};
this.coreStack.Push(smf);
this.EBP = this.coreStack.Peek();
}