private static EvalValue CalcFunction(FuncEnvironment env, AstFunction ast)
{
// 初始化实参
var callee = env.GetMainEnv().GetFuncDef(ast.token.GetText());
if (callee != null)
{
// 脚本方法
var paramList = callee.paramList;
for (var i = 0; i < paramList.length; ++i)
{
var item = paramList.GetName(i);
if (ast.args.ChildrenCount() <= i)
{
throw new RunTimeException("实参不足", ast);
}
var argItem = ast.args.ChildAt(i) as AstExpression;
env.AddArg(item, argItem.Eval(env.parent));
}
// 执行函数体
var funcBody = callee.block;
var ret = new EvalValue();
foreach (var item in funcBody)
{
try
{
ret = item.Eval(env);
}
catch (ReturnException)
{
break;
}
}
if (env.Get("return@" + env.GetScopeName()) != null)
{
return(env.Get("return@" + env.GetScopeName()));
}
return(ret);
}
else
{
var csm = env.GetMainEnv().GetCsFuncDef(ast.token.GetText());
if (csm != null)
{
// CS方法
var csRet = csm(ast.args.ToArgArray(env));
var ret = new EvalValue(csRet);
return(ret);
}
}
throw new RunTimeException("函数未定义:" + ast.token.GetText() + "()", ast);
}
public static EvalValue CallFunc(FuncEnvironment env, AstFuncDef callee, params object[] args)
{
var paramList = callee.paramList;
if (args.Length < paramList.length)
{
throw new RunTimeException(string.Format("实参不足: 需要{0}个，提供了{0}个", paramList.length, args.Length));
}
for (var i = 0; i < paramList.length; ++i)
{
var item = paramList.GetName(i);
var argItem = args[i];
if (argItem is System.Int32)
{
env.AddArg(item, new EvalValue((int)argItem));
}
else if (argItem is System.String)
{
env.AddArg(item, new EvalValue(argItem as System.String));
}
else
{
throw new RunTimeException("参数类型不正确:" + argItem.GetType().ToString());
}
}
// 执行函数体
var funcBody = callee.block;
var ret = new EvalValue();
foreach (var item in funcBody)
{
try
{
ret = item.Eval(env);
}
catch (ReturnException)
{
break;
}
}
if (env.Get("return@" + env.GetScopeName()) != null)
{
return(env.Get("return@" + env.GetScopeName()));
}
return(ret);
}
/// <summary>
/// Csharp调用脚本函数
/// </summary>
/// <param name="name"></param>
/// <returns></returns>
public RunResult CallScriptFunction(string name, params object[] args)
{
var func = GetFuncDef(name);
var ret = new RunResult();
var mainEnv = new MainEnvironment(this);
var funcEnv = new FuncEnvironment(mainEnv, Utils.GetScopeString());
try
{
ret.returnVal = Evaluator.CallFunc(funcEnv, func, args).ToString();
ret.success = true;
}
catch (RunTimeException e)
{
ret.error = "运行时错误：" + e.Message;
}
catch (Exception e)
{
ret.error = string.Format("其他错误[{0}]-{1}", e.GetType().ToString(), e.Message);
}
Utils.LogDebug("脚本函数执行完毕：" + ret.ToString());
return(ret);
}