/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "js/GlobalObject.h"
#include "jsapi-tests/tests.h"

/*
 * Bug 689101 - jsval is technically a non-POD type because it has a private
 * data member. On gcc, this doesn't seem to matter. On MSVC, this prevents
 * returning a jsval from a function between C and C++ because it will use a
 * retparam in C++ and a direct return value in C.
 *
 * Bug 712289 - jsval alignment was different on 32-bit platforms between C and
 * C++ because the default alignments of js::Value and jsval_layout differ.
 */

extern "C" {

extern bool C_ValueToObject(JSContext* cx, jsval v, JSObject** obj);

extern jsval C_GetEmptyStringValue(JSContext* cx);

extern size_t C_jsvalAlignmentTest();
}

BEGIN_TEST(testValueABI_retparam) {
  JS::RootedObject obj(cx, JS::CurrentGlobalOrNull(cx));
  RootedValue v(cx, ObjectValue(*obj));
  obj = nullptr;
  CHECK(C_ValueToObject(cx, v, obj.address()));
  bool equal;
  RootedValue v2(cx, ObjectValue(*obj));
  CHECK(JS_StrictlyEqual(cx, v, v2, &equal));
  CHECK(equal);

  v = C_GetEmptyStringValue(cx);
  CHECK(v.isString());

  return true;
}
END_TEST(testValueABI_retparam)

BEGIN_TEST(testValueABI_alignment) {
  typedef struct {
    char c;
    jsval v;
  } AlignTest;
  CHECK(C_jsvalAlignmentTest() == sizeof(AlignTest));

  return true;
}
END_TEST(testValueABI_alignment)