Line data    Source code

       1             : /* Copyright (C) 2021 Wildfire Games.
       2             :  * This file is part of 0 A.D.
       3             :  *
       4             :  * 0 A.D. is free software: you can redistribute it and/or modify
       5             :  * it under the terms of the GNU General Public License as published by
       6             :  * the Free Software Foundation, either version 2 of the License, or
       7             :  * (at your option) any later version.
       8             :  *
       9             :  * 0 A.D. is distributed in the hope that it will be useful,
      10             :  * but WITHOUT ANY WARRANTY; without even the implied warranty of
      11             :  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      12             :  * GNU General Public License for more details.
      13             :  *
      14             :  * You should have received a copy of the GNU General Public License
      15             :  * along with 0 A.D.  If not, see <http://www.gnu.org/licenses/>.
      16             :  */
      17             : 
      18             : #include "precompiled.h"
      19             : 
      20             : #include "ps/Profile.h"
      21             : #include "ScriptExceptions.h"
      22             : #include "ScriptInterface.h"
      23             : #include "ScriptRequest.h"
      24             : #include "StructuredClone.h"
      25             : 
      26             : // Ignore warnings in SM headers.
      27             : #if GCC_VERSION || CLANG_VERSION
      28             : # pragma GCC diagnostic push
      29             : # pragma GCC diagnostic ignored "-Wunused-parameter"
      30             : # pragma GCC diagnostic ignored "-Wnon-virtual-dtor"
      31             : #elif MSC_VERSION
      32             : # pragma warning(push, 1)
      33             : #endif
      34             : 
      35             : #include "js/StructuredClone.h"
      36             : 
      37             : #if GCC_VERSION || CLANG_VERSION
      38             : # pragma GCC diagnostic pop
      39             : #elif MSC_VERSION
      40             : # pragma warning(pop)
      41             : #endif
      42             : 
      43         338 : Script::StructuredClone Script::WriteStructuredClone(const ScriptRequest& rq, JS::HandleValue v)
      44             : {
      45         676 :     Script::StructuredClone ret(new JSStructuredCloneData(JS::StructuredCloneScope::SameProcess));
      46         338 :     JS::CloneDataPolicy policy;
      47         338 :     if (!JS_WriteStructuredClone(rq.cx, v, ret.get(), JS::StructuredCloneScope::SameProcess, policy, nullptr, nullptr, JS::UndefinedHandleValue))
      48             :     {
      49           0 :         debug_warn(L"Writing a structured clone with JS_WriteStructuredClone failed!");
      50           0 :         ScriptException::CatchPending(rq);
      51           0 :         return StructuredClone();
      52             :     }
      53             : 
      54         338 :     return ret;
      55             : }
      56             : 
      57         340 : void Script::ReadStructuredClone(const ScriptRequest& rq, const Script::StructuredClone& ptr, JS::MutableHandleValue ret)
      58             : {
      59         340 :     JS::CloneDataPolicy policy;
      60         340 :     if (!JS_ReadStructuredClone(rq.cx, *ptr, JS_STRUCTURED_CLONE_VERSION, ptr->scope(), ret, policy, nullptr, nullptr))
      61           0 :         ScriptException::CatchPending(rq);
      62         340 : }
      63             : 
      64           3 : JS::Value Script::CloneValueFromOtherCompartment(const ScriptInterface& to, const ScriptInterface& from, JS::HandleValue val)
      65             : {
      66           6 :     PROFILE("CloneValueFromOtherCompartment");
      67           6 :     Script::StructuredClone structuredClone;
      68             :     {
      69           6 :         ScriptRequest fromRq(from);
      70           3 :         structuredClone = WriteStructuredClone(fromRq, val);
      71             :     }
      72           6 :     ScriptRequest toRq(to);
      73           6 :     JS::RootedValue out(toRq.cx);
      74           3 :     ReadStructuredClone(toRq, structuredClone, &out);
      75           6 :     return out.get();
      76             : }
      77             : 
      78         330 : JS::Value Script::DeepCopy(const ScriptRequest& rq, JS::HandleValue val)
      79             : {
      80         660 :     JS::RootedValue out(rq.cx);
      81         330 :     ReadStructuredClone(rq, WriteStructuredClone(rq, val), &out);
      82         660 :     return out.get();
      83             : }