/work/obj-fuzz/dom/bindings/FileBinding.cpp

Source (jump to first uncovered line)
/* THIS FILE IS AUTOGENERATED FROM File.webidl BY Codegen.py - DO NOT EDIT */

#include "AtomList.h"
#include "BlobBinding.h"
#include "FileBinding.h"
#include "WrapperFactory.h"
#include "mozilla/OwningNonNull.h"
#include "mozilla/dom/BindingUtils.h"
#include "mozilla/dom/DOMJSClass.h"
#include "mozilla/dom/DOMPrefs.h"
#include "mozilla/dom/File.h"
#include "mozilla/dom/NonRefcountedDOMObject.h"
#include "mozilla/dom/PrimitiveConversions.h"
#include "mozilla/dom/Promise.h"
#include "mozilla/dom/ScriptSettings.h"
#include "mozilla/dom/SimpleGlobalObject.h"
#include "mozilla/dom/ToJSValue.h"
#include "mozilla/dom/UnionConversions.h"
#include "mozilla/dom/XrayExpandoClass.h"
#include "nsContentUtils.h"
#include "nsIFile.h"

namespace mozilla {
namespace dom {

namespace binding_detail {}; // Just to make sure it's known as a namespace
using namespace mozilla::dom::binding_detail;



FilePropertyBag::FilePropertyBag()
{
  // Safe to pass a null context if we pass a null value
  Init(nullptr, JS::NullHandleValue);
}



bool
FilePropertyBag::InitIds(JSContext* cx, FilePropertyBagAtoms* atomsCache)
{
  MOZ_ASSERT(!*reinterpret_cast<jsid**>(atomsCache));

  // Initialize these in reverse order so that any failure leaves the first one
  // uninitialized.
  if (!atomsCache->type_id.init(cx, "type") ||
      !atomsCache->lastModified_id.init(cx, "lastModified")) {
    return false;
  }
  return true;
}

bool
FilePropertyBag::Init(JSContext* cx, JS::Handle<JS::Value> val, const char* sourceDescription, bool passedToJSImpl)
{
  // Passing a null JSContext is OK only if we're initing from null,
  // Since in that case we will not have to do any property gets
  // Also evaluate isNullOrUndefined in order to avoid false-positive
  // checkers by static analysis tools
  MOZ_ASSERT_IF(!cx, val.isNull() && val.isNullOrUndefined());
  FilePropertyBagAtoms* atomsCache = nullptr;
  if (cx) {
    atomsCache = GetAtomCache<FilePropertyBagAtoms>(cx);
    if (!*reinterpret_cast<jsid**>(atomsCache) && !InitIds(cx, atomsCache)) {
      return false;
    }
  }

  if (!IsConvertibleToDictionary(val)) {
    return ThrowErrorMessage(cx, MSG_NOT_DICTIONARY, sourceDescription);
  }

  bool isNull = val.isNullOrUndefined();
  // We only need these if !isNull, in which case we have |cx|.
  Maybe<JS::Rooted<JSObject *> > object;
  Maybe<JS::Rooted<JS::Value> > temp;
  if (!isNull) {
    MOZ_ASSERT(cx);
    object.emplace(cx, &val.toObject());
    temp.emplace(cx);
  }
  if (!isNull) {
    if (!JS_GetPropertyById(cx, *object, atomsCache->lastModified_id, temp.ptr())) {
      return false;
    }
  }
  if (!isNull && !temp->isUndefined()) {
    mLastModified.Construct();
    if (!ValueToPrimitive<int64_t, eDefault>(cx, temp.ref(), &(mLastModified.Value()))) {
      return false;
    }
    mIsAnyMemberPresent = true;
  }

  if (!isNull) {
    if (!JS_GetPropertyById(cx, *object, atomsCache->type_id, temp.ptr())) {
      return false;
    }
  }
  if (!isNull && !temp->isUndefined()) {
    if (!ConvertJSValueToString(cx, temp.ref(), eStringify, eStringify, mType)) {
      return false;
    }
  } else {
    static const char16_t data[] = { 0 };
    mType.Rebind(data, ArrayLength(data) - 1);
  }
  mIsAnyMemberPresent = true;
  return true;
}

bool
FilePropertyBag::Init(const nsAString& aJSON)
{
  AutoJSAPI jsapi;
  JSObject* cleanGlobal = SimpleGlobalObject::Create(SimpleGlobalObject::GlobalType::BindingDetail);
  if (!cleanGlobal) {
    return false;
  }
  if (!jsapi.Init(cleanGlobal)) {
    return false;
  }
  JSContext* cx = jsapi.cx();
  JS::Rooted<JS::Value> json(cx);
  bool ok = ParseJSON(cx, aJSON, &json);
  NS_ENSURE_TRUE(ok, false);
  return Init(cx, json);
}

bool
FilePropertyBag::ToObjectInternal(JSContext* cx, JS::MutableHandle<JS::Value> rval) const
{
  FilePropertyBagAtoms* atomsCache = GetAtomCache<FilePropertyBagAtoms>(cx);
  if (!*reinterpret_cast<jsid**>(atomsCache) && !InitIds(cx, atomsCache)) {
    return false;
  }

  JS::Rooted<JSObject*> obj(cx, JS_NewPlainObject(cx));
  if (!obj) {
    return false;
  }
  rval.set(JS::ObjectValue(*obj));

  if (mLastModified.WasPassed()) {
    do {
      // block for our 'break' successCode and scope for 'temp' and 'currentValue'
      JS::Rooted<JS::Value> temp(cx);
      int64_t const & currentValue = mLastModified.InternalValue();
      temp.set(JS_NumberValue(double(currentValue)));
      if (!JS_DefinePropertyById(cx, obj, atomsCache->lastModified_id, temp, JSPROP_ENUMERATE)) {
        return false;
      }
      break;
    } while(false);
  }

  do {
    // block for our 'break' successCode and scope for 'temp' and 'currentValue'
    JS::Rooted<JS::Value> temp(cx);
    nsString const & currentValue = mType;
    if (!xpc::NonVoidStringToJsval(cx, currentValue, &temp)) {
      return false;
    }
    if (!JS_DefinePropertyById(cx, obj, atomsCache->type_id, temp, JSPROP_ENUMERATE)) {
      return false;
    }
    break;
  } while(false);

  return true;
}

bool
FilePropertyBag::ToJSON(nsAString& aJSON) const
{
  AutoJSAPI jsapi;
  jsapi.Init();
  JSContext *cx = jsapi.cx();
  // It's safe to use UnprivilegedJunkScopeOrWorkerGlobal here
  // because we'll only be creating objects, in ways that have no
  // side-effects, followed by a call to JS::ToJSONMaybeSafely,
  // which likewise guarantees no side-effects for the sorts of
  // things we will pass it.
  JSAutoRealm ar(cx, UnprivilegedJunkScopeOrWorkerGlobal());
  JS::Rooted<JS::Value> val(cx);
  if (!ToObjectInternal(cx, &val)) {
    return false;
  }
  JS::Rooted<JSObject*> obj(cx, &val.toObject());
  return StringifyToJSON(cx, obj, aJSON);
}

void
FilePropertyBag::TraceDictionary(JSTracer* trc)
{
}

FilePropertyBag&
FilePropertyBag::operator=(const FilePropertyBag& aOther)
{
  DictionaryBase::operator=(aOther);
  mLastModified.Reset();
  if (aOther.mLastModified.WasPassed()) {
    mLastModified.Construct(aOther.mLastModified.Value());
  }
  mType = aOther.mType;
  return *this;
}

namespace binding_detail {
} // namespace binding_detail



ChromeFilePropertyBag::ChromeFilePropertyBag()
  : FilePropertyBag(FastDictionaryInitializer())
{
  // Safe to pass a null context if we pass a null value
  Init(nullptr, JS::NullHandleValue);
}



bool
ChromeFilePropertyBag::InitIds(JSContext* cx, ChromeFilePropertyBagAtoms* atomsCache)
{
  MOZ_ASSERT(!*reinterpret_cast<jsid**>(atomsCache));

  // Initialize these in reverse order so that any failure leaves the first one
  // uninitialized.
  if (!atomsCache->name_id.init(cx, "name") ||
      !atomsCache->existenceCheck_id.init(cx, "existenceCheck")) {
    return false;
  }
  return true;
}

bool
ChromeFilePropertyBag::Init(JSContext* cx, JS::Handle<JS::Value> val, const char* sourceDescription, bool passedToJSImpl)
{
  // Passing a null JSContext is OK only if we're initing from null,
  // Since in that case we will not have to do any property gets
  // Also evaluate isNullOrUndefined in order to avoid false-positive
  // checkers by static analysis tools
  MOZ_ASSERT_IF(!cx, val.isNull() && val.isNullOrUndefined());
  ChromeFilePropertyBagAtoms* atomsCache = nullptr;
  if (cx) {
    atomsCache = GetAtomCache<ChromeFilePropertyBagAtoms>(cx);
    if (!*reinterpret_cast<jsid**>(atomsCache) && !InitIds(cx, atomsCache)) {
      return false;
    }
  }

  // Per spec, we init the parent's members first
  if (!FilePropertyBag::Init(cx, val)) {
    return false;
  }

  bool isNull = val.isNullOrUndefined();
  // We only need these if !isNull, in which case we have |cx|.
  Maybe<JS::Rooted<JSObject *> > object;
  Maybe<JS::Rooted<JS::Value> > temp;
  if (!isNull) {
    MOZ_ASSERT(cx);
    object.emplace(cx, &val.toObject());
    temp.emplace(cx);
  }
  if (!isNull) {
    if (!JS_GetPropertyById(cx, *object, atomsCache->existenceCheck_id, temp.ptr())) {
      return false;
    }
  }
  if (!isNull && !temp->isUndefined()) {
    if (!ValueToPrimitive<bool, eDefault>(cx, temp.ref(), &mExistenceCheck)) {
      return false;
    }
  } else {
    mExistenceCheck = true;
  }
  mIsAnyMemberPresent = true;

  if (!isNull) {
    if (!JS_GetPropertyById(cx, *object, atomsCache->name_id, temp.ptr())) {
      return false;
    }
  }
  if (!isNull && !temp->isUndefined()) {
    if (!ConvertJSValueToString(cx, temp.ref(), eStringify, eStringify, mName)) {
      return false;
    }
  } else {
    static const char16_t data[] = { 0 };
    mName.Rebind(data, ArrayLength(data) - 1);
  }
  mIsAnyMemberPresent = true;
  return true;
}

bool
ChromeFilePropertyBag::Init(const nsAString& aJSON)
{
  AutoJSAPI jsapi;
  JSObject* cleanGlobal = SimpleGlobalObject::Create(SimpleGlobalObject::GlobalType::BindingDetail);
  if (!cleanGlobal) {
    return false;
  }
  if (!jsapi.Init(cleanGlobal)) {
    return false;
  }
  JSContext* cx = jsapi.cx();
  JS::Rooted<JS::Value> json(cx);
  bool ok = ParseJSON(cx, aJSON, &json);
  NS_ENSURE_TRUE(ok, false);
  return Init(cx, json);
}

bool
ChromeFilePropertyBag::ToObjectInternal(JSContext* cx, JS::MutableHandle<JS::Value> rval) const
{
  ChromeFilePropertyBagAtoms* atomsCache = GetAtomCache<ChromeFilePropertyBagAtoms>(cx);
  if (!*reinterpret_cast<jsid**>(atomsCache) && !InitIds(cx, atomsCache)) {
    return false;
  }

  // Per spec, we define the parent's members first
  if (!FilePropertyBag::ToObjectInternal(cx, rval)) {
    return false;
  }
  JS::Rooted<JSObject*> obj(cx, &rval.toObject());

  do {
    // block for our 'break' successCode and scope for 'temp' and 'currentValue'
    JS::Rooted<JS::Value> temp(cx);
    bool const & currentValue = mExistenceCheck;
    temp.setBoolean(currentValue);
    if (!JS_DefinePropertyById(cx, obj, atomsCache->existenceCheck_id, temp, JSPROP_ENUMERATE)) {
      return false;
    }
    break;
  } while(false);

  do {
    // block for our 'break' successCode and scope for 'temp' and 'currentValue'
    JS::Rooted<JS::Value> temp(cx);
    nsString const & currentValue = mName;
    if (!xpc::NonVoidStringToJsval(cx, currentValue, &temp)) {
      return false;
    }
    if (!JS_DefinePropertyById(cx, obj, atomsCache->name_id, temp, JSPROP_ENUMERATE)) {
      return false;
    }
    break;
  } while(false);

  return true;
}

bool
ChromeFilePropertyBag::ToJSON(nsAString& aJSON) const
{
  AutoJSAPI jsapi;
  jsapi.Init();
  JSContext *cx = jsapi.cx();
  // It's safe to use UnprivilegedJunkScopeOrWorkerGlobal here
  // because we'll only be creating objects, in ways that have no
  // side-effects, followed by a call to JS::ToJSONMaybeSafely,
  // which likewise guarantees no side-effects for the sorts of
  // things we will pass it.
  JSAutoRealm ar(cx, UnprivilegedJunkScopeOrWorkerGlobal());
  JS::Rooted<JS::Value> val(cx);
  if (!ToObjectInternal(cx, &val)) {
    return false;
  }
  JS::Rooted<JSObject*> obj(cx, &val.toObject());
  return StringifyToJSON(cx, obj, aJSON);
}

void
ChromeFilePropertyBag::TraceDictionary(JSTracer* trc)
{
  FilePropertyBag::TraceDictionary(trc);
}

ChromeFilePropertyBag&
ChromeFilePropertyBag::operator=(const ChromeFilePropertyBag& aOther)
{
  FilePropertyBag::operator=(aOther);
  mExistenceCheck = aOther.mExistenceCheck;
  mName = aOther.mName;
  return *this;
}

namespace binding_detail {
} // namespace binding_detail


namespace File_Binding {

static_assert(IsRefcounted<NativeType>::value == IsRefcounted<Blob_Binding::NativeType>::value,
              "Can't inherit from an interface with a different ownership model.");

MOZ_CAN_RUN_SCRIPT static bool
get_name(JSContext* cx, JS::Handle<JSObject*> obj, mozilla::dom::File* self, JSJitGetterCallArgs args)
{
  AUTO_PROFILER_LABEL_FAST("get File.name", DOM, cx);

  DOMString result;
  self->GetName(result);
  MOZ_ASSERT(!JS_IsExceptionPending(cx));
  if (!xpc::NonVoidStringToJsval(cx, result, args.rval())) {
    return false;
  }
  return true;
}

static const JSJitInfo name_getterinfo = {
  { (JSJitGetterOp)get_name },
  { prototypes::id::File },
  { PrototypeTraits<prototypes::id::File>::Depth },
  JSJitInfo::Getter,
  JSJitInfo::AliasEverything, /* aliasSet.  Not relevant for setters. */
  JSVAL_TYPE_STRING,  /* returnType.  Not relevant for setters. */
  false,  /* isInfallible. False in setters. */
  false,  /* isMovable.  Not relevant for setters. */
  false, /* isEliminatable.  Not relevant for setters. */
  false, /* isAlwaysInSlot.  Only relevant for getters. */
  false, /* isLazilyCachedInSlot.  Only relevant for getters. */
  false,  /* isTypedMethod.  Only relevant for methods. */
  0   /* Reserved slot index, if we're stored in a slot, else 0. */
};
static_assert(0 <= JSJitInfo::maxSlotIndex, "We won't fit");
static_assert(0 < 1, "There is no slot for us");

MOZ_CAN_RUN_SCRIPT static bool
get_lastModified(JSContext* cx, JS::Handle<JSObject*> obj, mozilla::dom::File* self, JSJitGetterCallArgs args)
{
  AUTO_PROFILER_LABEL_FAST("get File.lastModified", DOM, cx);

  FastErrorResult rv;
  int64_t result(self->GetLastModified(rv));
  if (MOZ_UNLIKELY(rv.MaybeSetPendingException(cx))) {
    return false;
  }
  MOZ_ASSERT(!JS_IsExceptionPending(cx));
  args.rval().set(JS_NumberValue(double(result)));
  return true;
}

static const JSJitInfo lastModified_getterinfo = {
  { (JSJitGetterOp)get_lastModified },
  { prototypes::id::File },
  { PrototypeTraits<prototypes::id::File>::Depth },
  JSJitInfo::Getter,
  JSJitInfo::AliasEverything, /* aliasSet.  Not relevant for setters. */
  JSVAL_TYPE_DOUBLE,  /* returnType.  Not relevant for setters. */
  false,  /* isInfallible. False in setters. */
  false,  /* isMovable.  Not relevant for setters. */
  false, /* isEliminatable.  Not relevant for setters. */
  false, /* isAlwaysInSlot.  Only relevant for getters. */
  false, /* isLazilyCachedInSlot.  Only relevant for getters. */
  false,  /* isTypedMethod.  Only relevant for methods. */
  0   /* Reserved slot index, if we're stored in a slot, else 0. */
};
static_assert(0 <= JSJitInfo::maxSlotIndex, "We won't fit");
static_assert(0 < 1, "There is no slot for us");

MOZ_CAN_RUN_SCRIPT static bool
get_webkitRelativePath(JSContext* cx, JS::Handle<JSObject*> obj, mozilla::dom::File* self, JSJitGetterCallArgs args)
{
  AUTO_PROFILER_LABEL_FAST("get File.webkitRelativePath", DOM, cx);

  DOMString result;
  self->GetRelativePath(result);
  MOZ_ASSERT(!JS_IsExceptionPending(cx));
  if (!xpc::NonVoidStringToJsval(cx, result, args.rval())) {
    return false;
  }
  return true;
}

static const JSJitInfo webkitRelativePath_getterinfo = {
  { (JSJitGetterOp)get_webkitRelativePath },
  { prototypes::id::File },
  { PrototypeTraits<prototypes::id::File>::Depth },
  JSJitInfo::Getter,
  JSJitInfo::AliasEverything, /* aliasSet.  Not relevant for setters. */
  JSVAL_TYPE_STRING,  /* returnType.  Not relevant for setters. */
  false,  /* isInfallible. False in setters. */
  false,  /* isMovable.  Not relevant for setters. */
  false, /* isEliminatable.  Not relevant for setters. */
  false, /* isAlwaysInSlot.  Only relevant for getters. */
  false, /* isLazilyCachedInSlot.  Only relevant for getters. */
  false,  /* isTypedMethod.  Only relevant for methods. */
  0   /* Reserved slot index, if we're stored in a slot, else 0. */
};
static_assert(0 <= JSJitInfo::maxSlotIndex, "We won't fit");
static_assert(0 < 1, "There is no slot for us");

MOZ_CAN_RUN_SCRIPT static bool
get_mozFullPath(JSContext* cx, JS::Handle<JSObject*> obj, mozilla::dom::File* self, JSJitGetterCallArgs args)
{
  AUTO_PROFILER_LABEL_FAST("get File.mozFullPath", DOM, cx);

  FastErrorResult rv;
  DOMString result;
  self->GetMozFullPath(result, SystemCallerGuarantee(), rv);
  if (MOZ_UNLIKELY(rv.MaybeSetPendingException(cx))) {
    return false;
  }
  MOZ_ASSERT(!JS_IsExceptionPending(cx));
  if (!xpc::NonVoidStringToJsval(cx, result, args.rval())) {
    return false;
  }
  return true;
}

static const JSJitInfo mozFullPath_getterinfo = {
  { (JSJitGetterOp)get_mozFullPath },
  { prototypes::id::File },
  { PrototypeTraits<prototypes::id::File>::Depth },
  JSJitInfo::Getter,
  JSJitInfo::AliasEverything, /* aliasSet.  Not relevant for setters. */
  JSVAL_TYPE_STRING,  /* returnType.  Not relevant for setters. */
  false,  /* isInfallible. False in setters. */
  false,  /* isMovable.  Not relevant for setters. */
  false, /* isEliminatable.  Not relevant for setters. */
  false, /* isAlwaysInSlot.  Only relevant for getters. */
  false, /* isLazilyCachedInSlot.  Only relevant for getters. */
  false,  /* isTypedMethod.  Only relevant for methods. */
  0   /* Reserved slot index, if we're stored in a slot, else 0. */
};
static_assert(0 <= JSJitInfo::maxSlotIndex, "We won't fit");
static_assert(0 < 1, "There is no slot for us");

static bool
createFromNsIFile(JSContext* cx, unsigned argc, JS::Value* vp)
{
  AUTO_PROFILER_LABEL_FAST("File.createFromNsIFile", DOM, cx);

  JS::CallArgs args = JS::CallArgsFromVp(argc, vp);
  JS::Rooted<JSObject*> obj(cx, &args.callee());

  if (MOZ_UNLIKELY(args.length() < 1)) {
    return ThrowErrorMessage(cx, MSG_MISSING_ARGUMENTS, "File.createFromNsIFile");
  }
  GlobalObject global(cx, xpc::XrayAwareCalleeGlobal(obj));
  if (global.Failed()) {
    return false;
  }

  nsIFile* arg0;
  RefPtr<nsIFile> arg0_holder;
  if (args[0].isObject()) {
    JS::Rooted<JSObject*> source(cx, &args[0].toObject());
    if (NS_FAILED(UnwrapArg<nsIFile>(cx, source, getter_AddRefs(arg0_holder)))) {
      ThrowErrorMessage(cx, MSG_DOES_NOT_IMPLEMENT_INTERFACE, "Argument 1 of File.createFromNsIFile", "nsIFile");
      return false;
    }
    MOZ_ASSERT(arg0_holder);
    arg0 = arg0_holder;
  } else {
    ThrowErrorMessage(cx, MSG_NOT_OBJECT, "Argument 1 of File.createFromNsIFile");
    return false;
  }
  binding_detail::FastChromeFilePropertyBag arg1;
  if (!arg1.Init(cx, (args.hasDefined(1)) ? args[1] : JS::NullHandleValue,  "Argument 2 of File.createFromNsIFile", false)) {
    return false;
  }
  FastErrorResult rv;
  auto result(StrongOrRawPtr<Promise>(mozilla::dom::File::CreateFromNsIFile(global, MOZ_KnownLive(NonNullHelper(arg0)), Constify(arg1), SystemCallerGuarantee(), rv)));
  if (MOZ_UNLIKELY(rv.MaybeSetPendingException(cx))) {
    return false;
  }
  MOZ_ASSERT(!JS_IsExceptionPending(cx));
  if (!ToJSValue(cx, result, args.rval())) {
    return false;
  }
  return true;
}


static const JSJitInfo createFromNsIFile_methodinfo = {
  { (JSJitGetterOp)createFromNsIFile },
  { prototypes::id::_ID_Count }, { 0 }, JSJitInfo::StaticMethod,
  JSJitInfo::AliasEverything, JSVAL_TYPE_MISSING, false, false,
  false, false, 0
};

static bool
createFromFileName(JSContext* cx, unsigned argc, JS::Value* vp)
{
  AUTO_PROFILER_LABEL_FAST("File.createFromFileName", DOM, cx);

  JS::CallArgs args = JS::CallArgsFromVp(argc, vp);
  JS::Rooted<JSObject*> obj(cx, &args.callee());

  if (MOZ_UNLIKELY(args.length() < 1)) {
    return ThrowErrorMessage(cx, MSG_MISSING_ARGUMENTS, "File.createFromFileName");
  }
  GlobalObject global(cx, xpc::XrayAwareCalleeGlobal(obj));
  if (global.Failed()) {
    return false;
  }

  binding_detail::FakeString arg0;
  if (!ConvertJSValueToString(cx, args[0], eStringify, eStringify, arg0)) {
    return false;
  }
  NormalizeUSVString(arg0);
  binding_detail::FastChromeFilePropertyBag arg1;
  if (!arg1.Init(cx, (args.hasDefined(1)) ? args[1] : JS::NullHandleValue,  "Argument 2 of File.createFromFileName", false)) {
    return false;
  }
  FastErrorResult rv;
  auto result(StrongOrRawPtr<Promise>(mozilla::dom::File::CreateFromFileName(global, Constify(arg0), Constify(arg1), SystemCallerGuarantee(), rv)));
  if (MOZ_UNLIKELY(rv.MaybeSetPendingException(cx))) {
    return false;
  }
  MOZ_ASSERT(!JS_IsExceptionPending(cx));
  if (!ToJSValue(cx, result, args.rval())) {
    return false;
  }
  return true;
}


static const JSJitInfo createFromFileName_methodinfo = {
  { (JSJitGetterOp)createFromFileName },
  { prototypes::id::_ID_Count }, { 0 }, JSJitInfo::StaticMethod,
  JSJitInfo::AliasEverything, JSVAL_TYPE_MISSING, false, false,
  false, false, 0
};

static bool
_addProperty(JSContext* cx, JS::Handle<JSObject*> obj, JS::Handle<jsid> id, JS::Handle<JS::Value> val)
{
  mozilla::dom::File* self = UnwrapPossiblyNotInitializedDOMObject<mozilla::dom::File>(obj);
  // We don't want to preserve if we don't have a wrapper, and we
  // obviously can't preserve if we're not initialized.
  if (self && self->GetWrapperPreserveColor()) {
    PreserveWrapper(self);
  }
  return true;
}

static void
_finalize(js::FreeOp* fop, JSObject* obj)
{
  mozilla::dom::File* self = UnwrapPossiblyNotInitializedDOMObject<mozilla::dom::File>(obj);
  if (self) {
    ClearWrapper(self, self, obj);
    AddForDeferredFinalization<mozilla::dom::File>(self);
  }
}

static size_t
_objectMoved(JSObject* obj, JSObject* old)
{
  mozilla::dom::File* self = UnwrapPossiblyNotInitializedDOMObject<mozilla::dom::File>(obj);
  if (self) {
    UpdateWrapper(self, self, obj, old);
  }

  return 0;
}

// We deliberately use brace-elision to make Visual Studio produce better initalization code.
#if defined(__clang__)
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wmissing-braces"
#endif
static const JSFunctionSpec sChromeStaticMethods_specs[] = {
  JS_FNSPEC("createFromNsIFile", StaticMethodPromiseWrapper, &createFromNsIFile_methodinfo, 1, JSPROP_ENUMERATE, nullptr),
  JS_FNSPEC("createFromFileName", StaticMethodPromiseWrapper, &createFromFileName_methodinfo, 1, JSPROP_ENUMERATE, nullptr),
  JS_FS_END
};
#if defined(__clang__)
#pragma clang diagnostic pop
#endif

// Can't be const because the pref-enabled boolean needs to be writable
static PrefableDisablers sChromeStaticMethods_disablers0 = {
  true, false, GlobalNames::DedicatedWorkerGlobalScope | GlobalNames::ServiceWorkerGlobalScope | GlobalNames::SharedWorkerGlobalScope, nullptr
};

static const Prefable<const JSFunctionSpec> sChromeStaticMethods[] = {
  { &sChromeStaticMethods_disablers0, &sChromeStaticMethods_specs[0] },
  { nullptr, nullptr }
};

static_assert(1 <= 1ull << NUM_BITS_PROPERTY_INFO_PREF_INDEX,
    "We have a prefable index that is >= (1 << NUM_BITS_PROPERTY_INFO_PREF_INDEX)");
static_assert(2 <= 1ull << NUM_BITS_PROPERTY_INFO_SPEC_INDEX,
    "We have a spec index that is >= (1 << NUM_BITS_PROPERTY_INFO_SPEC_INDEX)");

// We deliberately use brace-elision to make Visual Studio produce better initalization code.
#if defined(__clang__)
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wmissing-braces"
#endif
static const JSPropertySpec sAttributes_specs[] = {
  { "name", JSPROP_ENUMERATE, GenericGetter<NormalThisPolicy, ThrowExceptions>, &name_getterinfo, nullptr, nullptr },
  { "lastModified", JSPROP_ENUMERATE, GenericGetter<NormalThisPolicy, ThrowExceptions>, &lastModified_getterinfo, nullptr, nullptr },
  { nullptr, 0, nullptr, nullptr, nullptr, nullptr },
  { "webkitRelativePath", JSPROP_ENUMERATE, GenericGetter<NormalThisPolicy, ThrowExceptions>, &webkitRelativePath_getterinfo, nullptr, nullptr },
  { nullptr, 0, nullptr, nullptr, nullptr, nullptr }
};
#if defined(__clang__)
#pragma clang diagnostic pop
#endif

// Can't be const because the pref-enabled boolean needs to be writable
static PrefableDisablers sAttributes_disablers3 = {
  true, false, 0, &mozilla::dom::DOMPrefs::dom_webkitBlink_dirPicker_enabled
};

static const Prefable<const JSPropertySpec> sAttributes[] = {
  { nullptr, &sAttributes_specs[0] },
  { &sAttributes_disablers3, &sAttributes_specs[3] },
  { nullptr, nullptr }
};

static_assert(2 <= 1ull << NUM_BITS_PROPERTY_INFO_PREF_INDEX,
    "We have a prefable index that is >= (1 << NUM_BITS_PROPERTY_INFO_PREF_INDEX)");
static_assert(2 <= 1ull << NUM_BITS_PROPERTY_INFO_SPEC_INDEX,
    "We have a spec index that is >= (1 << NUM_BITS_PROPERTY_INFO_SPEC_INDEX)");

// We deliberately use brace-elision to make Visual Studio produce better initalization code.
#if defined(__clang__)
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wmissing-braces"
#endif
static const JSPropertySpec sChromeAttributes_specs[] = {
  { "mozFullPath", JSPROP_ENUMERATE, GenericGetter<NormalThisPolicy, ThrowExceptions>, &mozFullPath_getterinfo, nullptr, nullptr },
  { nullptr, 0, nullptr, nullptr, nullptr, nullptr }
};
#if defined(__clang__)
#pragma clang diagnostic pop
#endif


static const Prefable<const JSPropertySpec> sChromeAttributes[] = {
  { nullptr, &sChromeAttributes_specs[0] },
  { nullptr, nullptr }
};

static_assert(1 <= 1ull << NUM_BITS_PROPERTY_INFO_PREF_INDEX,
    "We have a prefable index that is >= (1 << NUM_BITS_PROPERTY_INFO_PREF_INDEX)");
static_assert(1 <= 1ull << NUM_BITS_PROPERTY_INFO_SPEC_INDEX,
    "We have a spec index that is >= (1 << NUM_BITS_PROPERTY_INFO_SPEC_INDEX)");


static uint16_t sNativeProperties_sortedPropertyIndices[3];
static PropertyInfo sNativeProperties_propertyInfos[3];

static const NativePropertiesN<1> sNativeProperties = {
  false, 0,
  false, 0,
  false, 0,
  true,  0 /* sAttributes */,
  false, 0,
  false, 0,
  false, 0,
  -1,
  3,
  sNativeProperties_sortedPropertyIndices,
  {
    { sAttributes, &sNativeProperties_propertyInfos[0] }
  }
};
static_assert(3 < 1ull << CHAR_BIT * sizeof(sNativeProperties.propertyInfoCount),
    "We have a property info count that is oversized");

static uint16_t sChromeOnlyNativeProperties_sortedPropertyIndices[3];
static PropertyInfo sChromeOnlyNativeProperties_propertyInfos[3];

static const NativePropertiesN<2> sChromeOnlyNativeProperties = {
  true,  0 /* sChromeStaticMethods */,
  false, 0,
  false, 0,
  true,  1 /* sChromeAttributes */,
  false, 0,
  false, 0,
  false, 0,
  -1,
  3,
  sChromeOnlyNativeProperties_sortedPropertyIndices,
  {
    { sChromeStaticMethods, &sChromeOnlyNativeProperties_propertyInfos[0] },
    { sChromeAttributes, &sChromeOnlyNativeProperties_propertyInfos[2] }
  }
};
static_assert(3 < 1ull << CHAR_BIT * sizeof(sChromeOnlyNativeProperties.propertyInfoCount),
    "We have a property info count that is oversized");

static bool
_constructor(JSContext* cx, unsigned argc, JS::Value* vp)
{
  AUTO_PROFILER_LABEL_FAST("File constructor", DOM, cx);

  JS::CallArgs args = JS::CallArgsFromVp(argc, vp);
  JS::Rooted<JSObject*> obj(cx, &args.callee());
  if (!args.isConstructing()) {
    // XXXbz wish I could get the name from the callee instead of
    // Adding more relocations
    return ThrowConstructorWithoutNew(cx, "File");
  }

  JS::Rooted<JSObject*> desiredProto(cx);
  if (!GetDesiredProto(cx, args, &desiredProto)) {
    return false;
  }

  if (MOZ_UNLIKELY(args.length() < 2)) {
    return ThrowErrorMessage(cx, MSG_MISSING_ARGUMENTS, "File");
  }
  GlobalObject global(cx, obj);
  if (global.Failed()) {
    return false;
  }

  bool objIsXray = xpc::WrapperFactory::IsXrayWrapper(obj);
  binding_detail::AutoSequence<OwningArrayBufferViewOrArrayBufferOrBlobOrUSVString> arg0;
  SequenceRooter<OwningArrayBufferViewOrArrayBufferOrBlobOrUSVString> arg0_holder(cx, &arg0);
  if (args[0].isObject()) {
    JS::ForOfIterator iter(cx);
    if (!iter.init(args[0], JS::ForOfIterator::AllowNonIterable)) {
      return false;
    }
    if (!iter.valueIsIterable()) {
      ThrowErrorMessage(cx, MSG_NOT_SEQUENCE, "Argument 1 of File.constructor");
      return false;
    }
    binding_detail::AutoSequence<OwningArrayBufferViewOrArrayBufferOrBlobOrUSVString> &arr = arg0;
    JS::Rooted<JS::Value> temp(cx);
    while (true) {
      bool done;
      if (!iter.next(&temp, &done)) {
        return false;
      }
      if (done) {
        break;
      }
      OwningArrayBufferViewOrArrayBufferOrBlobOrUSVString* slotPtr = arr.AppendElement(mozilla::fallible);
      if (!slotPtr) {
        JS_ReportOutOfMemory(cx);
        return false;
      }
      OwningArrayBufferViewOrArrayBufferOrBlobOrUSVString& slot = *slotPtr;
      {
        bool done = false, failed = false, tryNext;
        if (temp.isObject()) {
          done = (failed = !slot.TrySetToArrayBufferView(cx, temp, tryNext, false)) || !tryNext ||
                 (failed = !slot.TrySetToArrayBuffer(cx, temp, tryNext, false)) || !tryNext ||
                 (failed = !slot.TrySetToBlob(cx, temp, tryNext, false)) || !tryNext;

        }
        if (!done) {
          do {
            done = (failed = !slot.TrySetToUSVString(cx, temp, tryNext)) || !tryNext;
            break;
          } while (false);
        }
        if (failed) {
          return false;
        }
        if (!done) {
          ThrowErrorMessage(cx, MSG_NOT_IN_UNION, "Element of argument 1 of File.constructor", "ArrayBufferView, ArrayBuffer, Blob");
          return false;
        }
      }
    }
  } else {
    ThrowErrorMessage(cx, MSG_NOT_SEQUENCE, "Argument 1 of File.constructor");
    return false;
  }
  binding_detail::FakeString arg1;
  if (!ConvertJSValueToString(cx, args[1], eStringify, eStringify, arg1)) {
    return false;
  }
  NormalizeUSVString(arg1);
  binding_detail::FastFilePropertyBag arg2;
  if (!arg2.Init(cx, (args.hasDefined(2)) ? args[2] : JS::NullHandleValue,  "Argument 3 of File.constructor", false)) {
    return false;
  }
  Maybe<JSAutoRealm> ar;
  if (objIsXray) {
    obj = js::CheckedUnwrap(obj);
    if (!obj) {
      return false;
    }
    ar.emplace(cx, obj);
    if (!JS_WrapObject(cx, &desiredProto)) {
      return false;
    }
    for (uint32_t indexName0 = 0; indexName0 < arg0.Length(); ++indexName0) {
      if (arg0[indexName0].IsArrayBufferView()) {
        if (!arg0[indexName0].GetAsArrayBufferView().WrapIntoNewCompartment(cx)) {
          return false;
        }
      }
      else if (arg0[indexName0].IsArrayBuffer()) {
        if (!arg0[indexName0].GetAsArrayBuffer().WrapIntoNewCompartment(cx)) {
          return false;
        }
      }
    }
  }
  FastErrorResult rv;
  auto result(StrongOrRawPtr<mozilla::dom::File>(mozilla::dom::File::Constructor(global, Constify(arg0), Constify(arg1), Constify(arg2), rv)));
  if (MOZ_UNLIKELY(rv.MaybeSetPendingException(cx))) {
    return false;
  }
  MOZ_ASSERT(!JS_IsExceptionPending(cx));
  static_assert(!IsPointer<decltype(result)>::value,
                "NewObject implies that we need to keep the object alive with a strong reference.");
  if (!GetOrCreateDOMReflector(cx, result, args.rval(), desiredProto)) {
    MOZ_ASSERT(JS_IsExceptionPending(cx));
    return false;
  }
  return true;
}

static const js::ClassOps sInterfaceObjectClassOps = {
    nullptr,               /* addProperty */
    nullptr,               /* delProperty */
    nullptr,               /* enumerate */
    nullptr,               /* newEnumerate */
    nullptr,               /* resolve */
    nullptr,               /* mayResolve */
    nullptr,               /* finalize */
    _constructor, /* call */
    nullptr,               /* hasInstance */
    _constructor, /* construct */
    nullptr,               /* trace */
};

static const DOMIfaceAndProtoJSClass sInterfaceObjectClass = {
  {
    "Function",
    JSCLASS_IS_DOMIFACEANDPROTOJSCLASS | JSCLASS_HAS_RESERVED_SLOTS(DOM_INTERFACE_SLOTS_BASE),
    &sInterfaceObjectClassOps,
    JS_NULL_CLASS_SPEC,
    JS_NULL_CLASS_EXT,
    &sInterfaceObjectClassObjectOps
  },
  eInterface,
  true,
  prototypes::id::File,
  PrototypeTraits<prototypes::id::File>::Depth,
  sNativePropertyHooks,
  "function File() {\n    [native code]\n}",
  Blob_Binding::GetConstructorObject
};

static const DOMIfaceAndProtoJSClass sPrototypeClass = {
  {
    "FilePrototype",
    JSCLASS_IS_DOMIFACEANDPROTOJSCLASS | JSCLASS_HAS_RESERVED_SLOTS(DOM_INTERFACE_PROTO_SLOTS_BASE),
    JS_NULL_CLASS_OPS,
    JS_NULL_CLASS_SPEC,
    JS_NULL_CLASS_EXT,
    JS_NULL_OBJECT_OPS
  },
  eInterfacePrototype,
  false,
  prototypes::id::File,
  PrototypeTraits<prototypes::id::File>::Depth,
  sNativePropertyHooks,
  "[object FilePrototype]",
  Blob_Binding::GetProtoObject
};

static const js::ClassOps sClassOps = {
  _addProperty, /* addProperty */
  nullptr,               /* delProperty */
  nullptr,               /* enumerate */
  nullptr, /* newEnumerate */
  nullptr, /* resolve */
  nullptr, /* mayResolve */
  _finalize, /* finalize */
  nullptr, /* call */
  nullptr,               /* hasInstance */
  nullptr,               /* construct */
  nullptr, /* trace */
};

static const js::ClassExtension sClassExtension = {
  nullptr, /* weakmapKeyDelegateOp */
  _objectMoved /* objectMovedOp */
};

static const DOMJSClass sClass = {
  { "File",
    JSCLASS_IS_DOMJSCLASS | JSCLASS_FOREGROUND_FINALIZE | JSCLASS_HAS_RESERVED_SLOTS(1),
    &sClassOps,
    JS_NULL_CLASS_SPEC,
    &sClassExtension,
    JS_NULL_OBJECT_OPS
  },
  { prototypes::id::Blob, prototypes::id::File, prototypes::id::_ID_Count, prototypes::id::_ID_Count, prototypes::id::_ID_Count, prototypes::id::_ID_Count, prototypes::id::_ID_Count, prototypes::id::_ID_Count },
  IsBaseOf<nsISupports, mozilla::dom::File >::value,
  sNativePropertyHooks,
  FindAssociatedGlobalForNative<mozilla::dom::File>::Get,
  GetProtoObjectHandle,
  GetCCParticipant<mozilla::dom::File>::Get()
};
static_assert(1 == DOM_INSTANCE_RESERVED_SLOTS,
              "Must have the right minimal number of reserved slots.");
static_assert(1 >= 1,
              "Must have enough reserved slots.");

const JSClass*
GetJSClass()
{
  return sClass.ToJSClass();
}

bool
Wrap(JSContext* aCx, mozilla::dom::File* aObject, nsWrapperCache* aCache, JS::Handle<JSObject*> aGivenProto, JS::MutableHandle<JSObject*> aReflector)
{
  static_assert(!IsBaseOf<NonRefcountedDOMObject, mozilla::dom::File>::value,
                "Shouldn't have wrappercached things that are not refcounted.");
  MOZ_ASSERT(static_cast<mozilla::dom::File*>(aObject) ==
             reinterpret_cast<mozilla::dom::File*>(aObject),
             "Multiple inheritance for mozilla::dom::File is broken.");
  MOZ_ASSERT(static_cast<mozilla::dom::Blob*>(aObject) ==
             reinterpret_cast<mozilla::dom::Blob*>(aObject),
             "Multiple inheritance for mozilla::dom::Blob is broken.");
  MOZ_ASSERT(ToSupportsIsCorrect(aObject));
  MOZ_ASSERT_IF(aGivenProto, js::IsObjectInContextCompartment(aGivenProto, aCx));
  MOZ_ASSERT(!aCache->GetWrapper(),
             "You should probably not be using Wrap() directly; use "
             "GetOrCreateDOMReflector instead");

  MOZ_ASSERT(ToSupportsIsOnPrimaryInheritanceChain(aObject, aCache),
             "nsISupports must be on our primary inheritance chain");

  JS::Rooted<JSObject*> global(aCx, FindAssociatedGlobal(aCx, aObject->GetParentObject()));
  if (!global) {
    return false;
  }
  MOZ_ASSERT(JS_IsGlobalObject(global));
  MOZ_ASSERT(JS::ObjectIsNotGray(global));

  // That might have ended up wrapping us already, due to the wonders
  // of XBL.  Check for that, and bail out as needed.
  aReflector.set(aCache->GetWrapper());
  if (aReflector) {
#ifdef DEBUG
    AssertReflectorHasGivenProto(aCx, aReflector, aGivenProto);
#endif // DEBUG
    return true;
  }

  JSAutoRealm ar(aCx, global);
  JS::Handle<JSObject*> canonicalProto = GetProtoObjectHandle(aCx);
  if (!canonicalProto) {
    return false;
  }
  JS::Rooted<JSObject*> proto(aCx);
  if (aGivenProto) {
    proto = aGivenProto;
    // Unfortunately, while aGivenProto was in the compartment of aCx
    // coming in, we changed compartments to that of "parent" so may need
    // to wrap the proto here.
    if (js::GetContextCompartment(aCx) != js::GetObjectCompartment(proto)) {
      if (!JS_WrapObject(aCx, &proto)) {
        return false;
      }
    }
  } else {
    proto = canonicalProto;
  }

  BindingJSObjectCreator<mozilla::dom::File> creator(aCx);
  creator.CreateObject(aCx, sClass.ToJSClass(), proto, aObject, aReflector);
  if (!aReflector) {
    return false;
  }

  aCache->SetWrapper(aReflector);
  creator.InitializationSucceeded();

  MOZ_ASSERT(aCache->GetWrapperPreserveColor() &&
             aCache->GetWrapperPreserveColor() == aReflector);
  // If proto != canonicalProto, we have to preserve our wrapper;
  // otherwise we won't be able to properly recreate it later, since
  // we won't know what proto to use.  Note that we don't check
  // aGivenProto here, since it's entirely possible (and even
  // somewhat common) to have a non-null aGivenProto which is the
  // same as canonicalProto.
  if (proto != canonicalProto) {
    PreserveWrapper(aObject);
  }

  return true;
}

const NativePropertyHooks sNativePropertyHooks[] = { {
  nullptr,
  nullptr,
  nullptr,
  { sNativeProperties.Upcast(), sChromeOnlyNativeProperties.Upcast() },
  prototypes::id::File,
  constructors::id::File,
  Blob_Binding::sNativePropertyHooks,
  &DefaultXrayExpandoObjectClass
} };

void
CreateInterfaceObjects(JSContext* aCx, JS::Handle<JSObject*> aGlobal, ProtoAndIfaceCache& aProtoAndIfaceCache, bool aDefineOnGlobal)
{
  JS::Handle<JSObject*> parentProto(Blob_Binding::GetProtoObjectHandle(aCx));
  if (!parentProto) {
    return;
  }

  JS::Handle<JSObject*> constructorProto(Blob_Binding::GetConstructorObjectHandle(aCx));
  if (!constructorProto) {
    return;
  }

  static bool sIdsInited = false;
  if (!sIdsInited && NS_IsMainThread()) {
    if (!InitIds(aCx, sNativeProperties.Upcast())) {
      return;
    }
    if (!InitIds(aCx, sChromeOnlyNativeProperties.Upcast())) {
      return;
    }
    sIdsInited = true;
  }

  JS::Heap<JSObject*>* protoCache = &aProtoAndIfaceCache.EntrySlotOrCreate(prototypes::id::File);
  JS::Heap<JSObject*>* interfaceCache = &aProtoAndIfaceCache.EntrySlotOrCreate(constructors::id::File);
  dom::CreateInterfaceObjects(aCx, aGlobal, parentProto,
                              &sPrototypeClass.mBase, protoCache,
                              nullptr,
                              constructorProto, &sInterfaceObjectClass.mBase, 2, nullptr,
                              interfaceCache,
                              sNativeProperties.Upcast(),
                              sChromeOnlyNativeProperties.Upcast(),
                              "File", aDefineOnGlobal,
                              nullptr,
                              false);
}

JSObject*
GetConstructorObject(JSContext* aCx)
{
  return GetConstructorObjectHandle(aCx);
}

} // namespace File_Binding



} // namespace dom
} // namespace mozilla

Coverage Report

Created: 2018-09-25 14:53