public ALittleScriptAllExprElement GetAllExpr()
{
if (m_flag_AllExpr)
{
return(m_cache_AllExpr);
}
m_flag_AllExpr = true;
foreach (var child in m_childs)
{
if (child is ALittleScriptAllExprElement)
{
m_cache_AllExpr = child as ALittleScriptAllExprElement;
break;
}
}
return(m_cache_AllExpr);
}
// 检查表达式是否有return
public static ABnfGuessError CheckAllExpr(List <ABnfGuess> return_list, ALittleScriptAllExprElement all_expr, out bool result)
{
result = false;
if (all_expr.GetIfExpr() != null)
{
var if_expr = all_expr.GetIfExpr();
var sub_all_expr = if_expr.GetAllExpr();
var if_body = if_expr.GetIfBody();
if (sub_all_expr != null)
{
var error = CheckAllExpr(return_list, sub_all_expr, out bool sub_result);
if (error != null)
{
return(error);
}
if (!sub_result)
{
return(null);
}
}
else if (if_body != null)
{
var error = CheckAllExprList(return_list, if_body.GetAllExprList(), out bool sub_result);
if (error != null)
{
return(error);
}
if (!sub_result)
{
return(null);
}
}
else
{
return(null);
}
var else_if_expr_list = if_expr.GetElseIfExprList();
foreach (var else_if_expr in else_if_expr_list)
{
sub_all_expr = else_if_expr.GetAllExpr();
var else_if_body = else_if_expr.GetElseIfBody();
if (sub_all_expr != null)
{
var error = CheckAllExpr(return_list, sub_all_expr, out bool sub_result);
if (error != null)
{
return(error);
}
if (!sub_result)
{
return(null);
}
}
else if (else_if_body != null)
{
var error = CheckAllExprList(return_list, else_if_body.GetAllExprList(), out bool sub_result);
if (error != null)
{
return(error);
}
if (!sub_result)
{
return(null);
}
}
else
{
return(null);
}
}
var else_expr = if_expr.GetElseExpr();
if (else_expr == null)
{
return(null);
}
sub_all_expr = else_expr.GetAllExpr();
var else_body = else_expr.GetElseBody();
if (sub_all_expr != null)
{
return(CheckAllExpr(return_list, sub_all_expr, out result));
}
else if (else_body != null)
{
return(CheckAllExprList(return_list, else_body.GetAllExprList(), out result));
}
else
{
return(null);
}
}
/*
* if (all_expr.GetForExpr() != null)
* {
* var for_expr = all_expr.GetForExpr();
* var sub_all_expr = for_expr.GetAllExpr();
* var for_body = for_expr.GetForBody();
* if (sub_all_expr != null)
* return CheckAllExpr(return_list, sub_all_expr, out result);
* else if (for_body != null)
* return CheckAllExprList(return_list, for_body.GetAllExprList(), out result);
* else
* return null;
* }
*
* if (all_expr.GetWhileExpr() != null)
* {
* var while_expr = all_expr.GetWhileExpr();
* var sub_all_expr = while_expr.GetAllExpr();
* var while_body = while_expr.GetWhileBody();
* if (sub_all_expr != null)
* return CheckAllExpr(return_list, sub_all_expr, out result);
* else if (while_body != null)
* return CheckAllExprList(return_list, while_body.GetAllExprList(), out result);
* else
* return null;
* }
*/
if (all_expr.GetDoWhileExpr() != null)
{
var do_while_expr = all_expr.GetDoWhileExpr();
var do_while_body = do_while_expr.GetDoWhileBody();
if (do_while_body != null)
{
return(CheckAllExprList(return_list, do_while_body.GetAllExprList(), out result));
}
else
{
return(null);
}
}
if (all_expr.GetReturnExpr() != null)
{
result = true;
// 这里检查return
return(null);
}
if (all_expr.GetWrapExpr() != null)
{
var wrap_expr = all_expr.GetWrapExpr();
return(CheckAllExprList(return_list, wrap_expr.GetAllExprList(), out result));
}
if (all_expr.GetThrowExpr() != null)
{
result = true;
return(null);
}
return(null);
}
