public ALittleScriptMethodNameDecElement GetMethodNameDec()
{
if (m_flag_MethodNameDec)
{
return(m_cache_MethodNameDec);
}
m_flag_MethodNameDec = true;
foreach (var child in m_childs)
{
if (child is ALittleScriptMethodNameDecElement)
{
m_cache_MethodNameDec = child as ALittleScriptMethodNameDecElement;
break;
}
}
return(m_cache_MethodNameDec);
}
// 检查函数体
private static ABnfGuessError CheckMethodBody(List <ABnfGuess> return_list
, ALittleScriptMethodNameDecElement method_name_dec
, ALittleScriptMethodBodyDecElement method_body_dec)
{
// 检查return
if (return_list.Count > 0 && !ALittleScriptUtility.IsRegister(method_name_dec))
{
var all_expr_list = method_body_dec.GetAllExprList();
var error = CheckAllExprList(return_list, all_expr_list, out bool result);
if (error != null)
{
return(error);
}
if (!result)
{
return(new ABnfGuessError(method_name_dec, "不是所有分支都有return"));
}
}
return(null);
}
public override ABnfGuessError CheckError()
{
var parent = m_element.GetParent();
if (parent is ALittleScriptClassCtorDecElement)
{
return(null);
}
if (parent is ALittleScriptClassSetterDecElement)
{
return(null);
}
var return_list = new List <ABnfGuess>();
ALittleScriptMethodReturnDecElement return_dec = null;
ALittleScriptMethodNameDecElement name_dec = null;
if (parent is ALittleScriptClassGetterDecElement)
{
var getter_dec = parent as ALittleScriptClassGetterDecElement;
name_dec = getter_dec.GetMethodNameDec();
if (name_dec == null)
{
return(null);
}
var all_type = getter_dec.GetAllType();
if (all_type == null)
{
return(null);
}
var error = all_type.GuessType(out ABnfGuess all_type_guess);
if (error != null)
{
return(error);
}
return_list.Add(all_type_guess);
return(CheckMethodBody(return_list, name_dec, m_element));
}
if (parent is ALittleScriptClassMethodDecElement)
{
var method_dec = parent as ALittleScriptClassMethodDecElement;
name_dec = method_dec.GetMethodNameDec();
if (name_dec == null)
{
return(null);
}
return_dec = method_dec.GetMethodReturnDec();
}
if (parent is ALittleScriptClassStaticDecElement)
{
var static_dec = parent as ALittleScriptClassStaticDecElement;
name_dec = static_dec.GetMethodNameDec();
if (name_dec == null)
{
return(null);
}
return_dec = static_dec.GetMethodReturnDec();
}
if (parent is ALittleScriptGlobalMethodDecElement)
{
var global_method_dec = parent as ALittleScriptGlobalMethodDecElement;
name_dec = global_method_dec.GetMethodNameDec();
if (name_dec == null)
{
return(null);
}
return_dec = global_method_dec.GetMethodReturnDec();
}
if (name_dec == null)
{
return(null);
}
if (return_dec != null)
{
var return_one_list = return_dec.GetMethodReturnOneDecList();
for (int i = 0; i < return_one_list.Count; ++i)
{
var return_one = return_one_list[i];
var all_type = return_one.GetAllType();
var return_tail = return_one.GetMethodReturnTailDec();
if (all_type != null)
{
var error = all_type.GuessType(out ABnfGuess all_type_guess);
if (error != null)
{
return(error);
}
return_list.Add(all_type_guess);
}
else if (return_tail != null)
{
if (i + 1 != return_one_list.Count)
{
return(new ABnfGuessError(return_one, "返回值占位符必须定义在最后"));
}
var error = return_tail.GuessType(out ABnfGuess return_tail_guess);
if (error != null)
{
return(error);
}
return_list.Add(return_tail_guess);
}
}
}
return(CheckMethodBody(return_list, name_dec, m_element));
}
