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

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

#include "DOMTokenListBinding.h"
#include "WrapperFactory.h"
#include "mozilla/OwningNonNull.h"
#include "mozilla/dom/BindingUtils.h"
#include "mozilla/dom/CustomElementRegistry.h"
#include "mozilla/dom/DOMJSClass.h"
#include "mozilla/dom/DOMJSProxyHandler.h"
#include "mozilla/dom/DocGroup.h"
#include "mozilla/dom/NonRefcountedDOMObject.h"
#include "mozilla/dom/Nullable.h"
#include "mozilla/dom/PrimitiveConversions.h"
#include "mozilla/dom/ToJSValue.h"
#include "mozilla/dom/XrayExpandoClass.h"
#include "nsDOMTokenList.h"

namespace mozilla {
namespace dom {

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


namespace DOMTokenList_Binding {

MOZ_CAN_RUN_SCRIPT static bool
get_length(JSContext* cx, JS::Handle<JSObject*> obj, nsDOMTokenList* self, JSJitGetterCallArgs args)
{
  AUTO_PROFILER_LABEL_FAST("get DOMTokenList.length", DOM, cx);

  uint32_t result(self->Length());
  MOZ_ASSERT(!JS_IsExceptionPending(cx));
  args.rval().setNumber(result);
  return true;
}

static const JSJitInfo length_getterinfo = {
  { (JSJitGetterOp)get_length },
  { prototypes::id::DOMTokenList },
  { PrototypeTraits<prototypes::id::DOMTokenList>::Depth },
  JSJitInfo::Getter,
  JSJitInfo::AliasEverything, /* aliasSet.  Not relevant for setters. */
  JSVAL_TYPE_DOUBLE,  /* returnType.  Not relevant for setters. */
  true,  /* 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
item(JSContext* cx, JS::Handle<JSObject*> obj, nsDOMTokenList* self, const JSJitMethodCallArgs& args)
{
  AUTO_PROFILER_LABEL_FAST("DOMTokenList.item", DOM, cx);

  if (MOZ_UNLIKELY(args.length() < 1)) {
    return ThrowErrorMessage(cx, MSG_MISSING_ARGUMENTS, "DOMTokenList.item");
  }
  uint32_t arg0;
  if (!ValueToPrimitive<uint32_t, eDefault>(cx, args[0], &arg0)) {
    return false;
  }
  DOMString result;
  self->Item(arg0, result);
  MOZ_ASSERT(!JS_IsExceptionPending(cx));
  if (!xpc::StringToJsval(cx, result, args.rval())) {
    return false;
  }
  return true;
}

static const JSJitInfo item_methodinfo = {
  { (JSJitGetterOp)item },
  { prototypes::id::DOMTokenList },
  { PrototypeTraits<prototypes::id::DOMTokenList>::Depth },
  JSJitInfo::Method,
  JSJitInfo::AliasEverything, /* aliasSet.  Not relevant for setters. */
  JSVAL_TYPE_UNKNOWN,  /* 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
contains(JSContext* cx, JS::Handle<JSObject*> obj, nsDOMTokenList* self, const JSJitMethodCallArgs& args)
{
  AUTO_PROFILER_LABEL_FAST("DOMTokenList.contains", DOM, cx);

  if (MOZ_UNLIKELY(args.length() < 1)) {
    return ThrowErrorMessage(cx, MSG_MISSING_ARGUMENTS, "DOMTokenList.contains");
  }
  binding_detail::FakeString arg0;
  if (!ConvertJSValueToString(cx, args[0], eStringify, eStringify, arg0)) {
    return false;
  }
  bool result(self->Contains(NonNullHelper(Constify(arg0))));
  MOZ_ASSERT(!JS_IsExceptionPending(cx));
  args.rval().setBoolean(result);
  return true;
}

static const JSJitInfo contains_methodinfo = {
  { (JSJitGetterOp)contains },
  { prototypes::id::DOMTokenList },
  { PrototypeTraits<prototypes::id::DOMTokenList>::Depth },
  JSJitInfo::Method,
  JSJitInfo::AliasEverything, /* aliasSet.  Not relevant for setters. */
  JSVAL_TYPE_BOOLEAN,  /* 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
add(JSContext* cx, JS::Handle<JSObject*> obj, nsDOMTokenList* self, const JSJitMethodCallArgs& args)
{
  AUTO_PROFILER_LABEL_FAST("DOMTokenList.add", DOM, cx);

  AutoSequence<nsString> arg0;
  if (args.length() > 0) {
    if (!arg0.SetCapacity(args.length() - 0, mozilla::fallible)) {
      JS_ReportOutOfMemory(cx);
      return false;
    }
    for (uint32_t variadicArg = 0; variadicArg < args.length(); ++variadicArg) {
      nsString& slot = *arg0.AppendElement(mozilla::fallible);
      if (!ConvertJSValueToString(cx, args[variadicArg], eStringify, eStringify, slot)) {
        return false;
      }
    }
  }
  Maybe<AutoCEReaction> ceReaction;
  if (CustomElementRegistry::IsCustomElementEnabled(cx, obj)) {
    DocGroup* docGroup = self->GetDocGroup();
    if (docGroup) {
      ceReaction.emplace(docGroup->CustomElementReactionsStack(), cx);
    }
  }
  FastErrorResult rv;
  self->Add(NonNullHelper(Constify(arg0)), rv);
  if (MOZ_UNLIKELY(rv.MaybeSetPendingException(cx))) {
    return false;
  }
  MOZ_ASSERT(!JS_IsExceptionPending(cx));
  args.rval().setUndefined();
  return true;
}

static const JSJitInfo add_methodinfo = {
  { (JSJitGetterOp)add },
  { prototypes::id::DOMTokenList },
  { PrototypeTraits<prototypes::id::DOMTokenList>::Depth },
  JSJitInfo::Method,
  JSJitInfo::AliasEverything, /* aliasSet.  Not relevant for setters. */
  JSVAL_TYPE_UNDEFINED,  /* 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
remove(JSContext* cx, JS::Handle<JSObject*> obj, nsDOMTokenList* self, const JSJitMethodCallArgs& args)
{
  AUTO_PROFILER_LABEL_FAST("DOMTokenList.remove", DOM, cx);

  AutoSequence<nsString> arg0;
  if (args.length() > 0) {
    if (!arg0.SetCapacity(args.length() - 0, mozilla::fallible)) {
      JS_ReportOutOfMemory(cx);
      return false;
    }
    for (uint32_t variadicArg = 0; variadicArg < args.length(); ++variadicArg) {
      nsString& slot = *arg0.AppendElement(mozilla::fallible);
      if (!ConvertJSValueToString(cx, args[variadicArg], eStringify, eStringify, slot)) {
        return false;
      }
    }
  }
  Maybe<AutoCEReaction> ceReaction;
  if (CustomElementRegistry::IsCustomElementEnabled(cx, obj)) {
    DocGroup* docGroup = self->GetDocGroup();
    if (docGroup) {
      ceReaction.emplace(docGroup->CustomElementReactionsStack(), cx);
    }
  }
  FastErrorResult rv;
  self->Remove(NonNullHelper(Constify(arg0)), rv);
  if (MOZ_UNLIKELY(rv.MaybeSetPendingException(cx))) {
    return false;
  }
  MOZ_ASSERT(!JS_IsExceptionPending(cx));
  args.rval().setUndefined();
  return true;
}

static const JSJitInfo remove_methodinfo = {
  { (JSJitGetterOp)remove },
  { prototypes::id::DOMTokenList },
  { PrototypeTraits<prototypes::id::DOMTokenList>::Depth },
  JSJitInfo::Method,
  JSJitInfo::AliasEverything, /* aliasSet.  Not relevant for setters. */
  JSVAL_TYPE_UNDEFINED,  /* 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
replace(JSContext* cx, JS::Handle<JSObject*> obj, nsDOMTokenList* self, const JSJitMethodCallArgs& args)
{
  AUTO_PROFILER_LABEL_FAST("DOMTokenList.replace", DOM, cx);

  if (MOZ_UNLIKELY(args.length() < 2)) {
    return ThrowErrorMessage(cx, MSG_MISSING_ARGUMENTS, "DOMTokenList.replace");
  }
  binding_detail::FakeString arg0;
  if (!ConvertJSValueToString(cx, args[0], eStringify, eStringify, arg0)) {
    return false;
  }
  binding_detail::FakeString arg1;
  if (!ConvertJSValueToString(cx, args[1], eStringify, eStringify, arg1)) {
    return false;
  }
  Maybe<AutoCEReaction> ceReaction;
  if (CustomElementRegistry::IsCustomElementEnabled(cx, obj)) {
    DocGroup* docGroup = self->GetDocGroup();
    if (docGroup) {
      ceReaction.emplace(docGroup->CustomElementReactionsStack(), cx);
    }
  }
  FastErrorResult rv;
  bool result(self->Replace(NonNullHelper(Constify(arg0)), NonNullHelper(Constify(arg1)), rv));
  if (MOZ_UNLIKELY(rv.MaybeSetPendingException(cx))) {
    return false;
  }
  MOZ_ASSERT(!JS_IsExceptionPending(cx));
  args.rval().setBoolean(result);
  return true;
}

static const JSJitInfo replace_methodinfo = {
  { (JSJitGetterOp)replace },
  { prototypes::id::DOMTokenList },
  { PrototypeTraits<prototypes::id::DOMTokenList>::Depth },
  JSJitInfo::Method,
  JSJitInfo::AliasEverything, /* aliasSet.  Not relevant for setters. */
  JSVAL_TYPE_BOOLEAN,  /* 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
toggle(JSContext* cx, JS::Handle<JSObject*> obj, nsDOMTokenList* self, const JSJitMethodCallArgs& args)
{
  AUTO_PROFILER_LABEL_FAST("DOMTokenList.toggle", DOM, cx);

  if (MOZ_UNLIKELY(args.length() < 1)) {
    return ThrowErrorMessage(cx, MSG_MISSING_ARGUMENTS, "DOMTokenList.toggle");
  }
  binding_detail::FakeString arg0;
  if (!ConvertJSValueToString(cx, args[0], eStringify, eStringify, arg0)) {
    return false;
  }
  Optional<bool> arg1;
  if (args.hasDefined(1)) {
    arg1.Construct();
    if (!ValueToPrimitive<bool, eDefault>(cx, args[1], &arg1.Value())) {
      return false;
    }
  }
  Maybe<AutoCEReaction> ceReaction;
  if (CustomElementRegistry::IsCustomElementEnabled(cx, obj)) {
    DocGroup* docGroup = self->GetDocGroup();
    if (docGroup) {
      ceReaction.emplace(docGroup->CustomElementReactionsStack(), cx);
    }
  }
  FastErrorResult rv;
  bool result(self->Toggle(NonNullHelper(Constify(arg0)), Constify(arg1), rv));
  if (MOZ_UNLIKELY(rv.MaybeSetPendingException(cx))) {
    return false;
  }
  MOZ_ASSERT(!JS_IsExceptionPending(cx));
  args.rval().setBoolean(result);
  return true;
}

static const JSJitInfo toggle_methodinfo = {
  { (JSJitGetterOp)toggle },
  { prototypes::id::DOMTokenList },
  { PrototypeTraits<prototypes::id::DOMTokenList>::Depth },
  JSJitInfo::Method,
  JSJitInfo::AliasEverything, /* aliasSet.  Not relevant for setters. */
  JSVAL_TYPE_BOOLEAN,  /* 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
supports(JSContext* cx, JS::Handle<JSObject*> obj, nsDOMTokenList* self, const JSJitMethodCallArgs& args)
{
  AUTO_PROFILER_LABEL_FAST("DOMTokenList.supports", DOM, cx);

  if (MOZ_UNLIKELY(args.length() < 1)) {
    return ThrowErrorMessage(cx, MSG_MISSING_ARGUMENTS, "DOMTokenList.supports");
  }
  binding_detail::FakeString arg0;
  if (!ConvertJSValueToString(cx, args[0], eStringify, eStringify, arg0)) {
    return false;
  }
  FastErrorResult rv;
  bool result(self->Supports(NonNullHelper(Constify(arg0)), rv));
  if (MOZ_UNLIKELY(rv.MaybeSetPendingException(cx))) {
    return false;
  }
  MOZ_ASSERT(!JS_IsExceptionPending(cx));
  args.rval().setBoolean(result);
  return true;
}

static const JSJitInfo supports_methodinfo = {
  { (JSJitGetterOp)supports },
  { prototypes::id::DOMTokenList },
  { PrototypeTraits<prototypes::id::DOMTokenList>::Depth },
  JSJitInfo::Method,
  JSJitInfo::AliasEverything, /* aliasSet.  Not relevant for setters. */
  JSVAL_TYPE_BOOLEAN,  /* 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_value(JSContext* cx, JS::Handle<JSObject*> obj, nsDOMTokenList* self, JSJitGetterCallArgs args)
{
  AUTO_PROFILER_LABEL_FAST("get DOMTokenList.value", DOM, cx);

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

MOZ_CAN_RUN_SCRIPT static bool
set_value(JSContext* cx, JS::Handle<JSObject*> obj, nsDOMTokenList* self, JSJitSetterCallArgs args)
{
  AUTO_PROFILER_LABEL_FAST("set DOMTokenList.value", DOM, cx);

  binding_detail::FakeString arg0;
  if (!ConvertJSValueToString(cx, args[0], eStringify, eStringify, arg0)) {
    return false;
  }
  Maybe<AutoCEReaction> ceReaction;
  if (CustomElementRegistry::IsCustomElementEnabled(cx, obj)) {
    DocGroup* docGroup = self->GetDocGroup();
    if (docGroup) {
      ceReaction.emplace(docGroup->CustomElementReactionsStack(), cx);
    }
  }
  FastErrorResult rv;
  self->SetValue(NonNullHelper(Constify(arg0)), rv);
  if (MOZ_UNLIKELY(rv.MaybeSetPendingException(cx))) {
    return false;
  }
  MOZ_ASSERT(!JS_IsExceptionPending(cx));

  return true;
}

static const JSJitInfo value_getterinfo = {
  { (JSJitGetterOp)get_value },
  { prototypes::id::DOMTokenList },
  { PrototypeTraits<prototypes::id::DOMTokenList>::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 const JSJitInfo value_setterinfo = {
  { (JSJitGetterOp)set_value },
  { prototypes::id::DOMTokenList },
  { PrototypeTraits<prototypes::id::DOMTokenList>::Depth },
  JSJitInfo::Setter,
  JSJitInfo::AliasEverything, /* aliasSet.  Not relevant for setters. */
  JSVAL_TYPE_UNDEFINED,  /* 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
__stringifier(JSContext* cx, JS::Handle<JSObject*> obj, nsDOMTokenList* self, const JSJitMethodCallArgs& args)
{
  AUTO_PROFILER_LABEL_FAST("DOMTokenList.__stringifier", DOM, cx);

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

static const JSJitInfo __stringifier_methodinfo = {
  { (JSJitGetterOp)__stringifier },
  { prototypes::id::DOMTokenList },
  { PrototypeTraits<prototypes::id::DOMTokenList>::Depth },
  JSJitInfo::Method,
  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");

// 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 sMethods_specs[] = {
  JS_FNSPEC("item", (GenericMethod<NormalThisPolicy, ThrowExceptions>), reinterpret_cast<const JSJitInfo*>(&item_methodinfo), 1, JSPROP_ENUMERATE, nullptr),
  JS_FNSPEC("contains", (GenericMethod<NormalThisPolicy, ThrowExceptions>), reinterpret_cast<const JSJitInfo*>(&contains_methodinfo), 1, JSPROP_ENUMERATE, nullptr),
  JS_FNSPEC("add", (GenericMethod<NormalThisPolicy, ThrowExceptions>), reinterpret_cast<const JSJitInfo*>(&add_methodinfo), 0, JSPROP_ENUMERATE, nullptr),
  JS_FNSPEC("remove", (GenericMethod<NormalThisPolicy, ThrowExceptions>), reinterpret_cast<const JSJitInfo*>(&remove_methodinfo), 0, JSPROP_ENUMERATE, nullptr),
  JS_FNSPEC("replace", (GenericMethod<NormalThisPolicy, ThrowExceptions>), reinterpret_cast<const JSJitInfo*>(&replace_methodinfo), 2, JSPROP_ENUMERATE, nullptr),
  JS_FNSPEC("toggle", (GenericMethod<NormalThisPolicy, ThrowExceptions>), reinterpret_cast<const JSJitInfo*>(&toggle_methodinfo), 1, JSPROP_ENUMERATE, nullptr),
  JS_FNSPEC("supports", (GenericMethod<NormalThisPolicy, ThrowExceptions>), reinterpret_cast<const JSJitInfo*>(&supports_methodinfo), 1, JSPROP_ENUMERATE, nullptr),
  JS_SYM_FNSPEC(iterator, nullptr, nullptr, 0, 0, "ArrayValues"),
  JS_FNSPEC("keys", nullptr, nullptr, 0, JSPROP_ENUMERATE, "ArrayKeys"),
  JS_FNSPEC("values", nullptr, nullptr, 0, JSPROP_ENUMERATE, "ArrayValues"),
  JS_FNSPEC("entries", nullptr, nullptr, 0, JSPROP_ENUMERATE, "ArrayEntries"),
  JS_FNSPEC("forEach", nullptr, nullptr, 1, JSPROP_ENUMERATE, "ArrayForEach"),
  JS_FNSPEC("toString", (GenericMethod<NormalThisPolicy, ThrowExceptions>), reinterpret_cast<const JSJitInfo*>(&__stringifier_methodinfo), 0, JSPROP_ENUMERATE, nullptr),
  JS_FS_END
};
#if defined(__clang__)
#pragma clang diagnostic pop
#endif


static const Prefable<const JSFunctionSpec> sMethods[] = {
  { nullptr, &sMethods_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(13 <= 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[] = {
  { "length", JSPROP_ENUMERATE, GenericGetter<NormalThisPolicy, ThrowExceptions>, &length_getterinfo, nullptr, nullptr },
  { "value", JSPROP_ENUMERATE, GenericGetter<NormalThisPolicy, ThrowExceptions>, &value_getterinfo, GenericSetter<NormalThisPolicy>, &value_setterinfo },
  { nullptr, 0, nullptr, nullptr, nullptr, nullptr }
};
#if defined(__clang__)
#pragma clang diagnostic pop
#endif


static const Prefable<const JSPropertySpec> sAttributes[] = {
  { nullptr, &sAttributes_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)");


static uint16_t sNativeProperties_sortedPropertyIndices[15];
static PropertyInfo sNativeProperties_propertyInfos[15];

static const NativePropertiesN<2> sNativeProperties = {
  false, 0,
  false, 0,
  true,  0 /* sMethods */,
  true,  1 /* sAttributes */,
  false, 0,
  false, 0,
  false, 0,
  -1,
  15,
  sNativeProperties_sortedPropertyIndices,
  {
    { sMethods, &sNativeProperties_propertyInfos[0] },
    { sAttributes, &sNativeProperties_propertyInfos[13] }
  }
};
static_assert(15 < 1ull << CHAR_BIT * sizeof(sNativeProperties.propertyInfoCount),
    "We have a property info count that is oversized");

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

static const DOMIfaceAndProtoJSClass sPrototypeClass = {
  {
    "DOMTokenListPrototype",
    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::DOMTokenList,
  PrototypeTraits<prototypes::id::DOMTokenList>::Depth,
  sNativePropertyHooks,
  "[object DOMTokenListPrototype]",
  JS::GetRealmObjectPrototype
};

static_assert(IsBaseOf<nsISupports, nsDOMTokenList >::value,
                  "We don't support non-nsISupports native classes for "
                  "proxy-based bindings yet");


class DOMProxyHandler : public mozilla::dom::DOMProxyHandler
{
public:
  explicit constexpr DOMProxyHandler()
  {
  }

  virtual bool
  getOwnPropDescriptor(JSContext* cx, JS::Handle<JSObject*> proxy, JS::Handle<jsid> id, bool ignoreNamedProps, JS::MutableHandle<JS::PropertyDescriptor> desc) const override;

  virtual bool
  defineProperty(JSContext* cx, JS::Handle<JSObject*> proxy, JS::Handle<jsid> id, JS::Handle<JS::PropertyDescriptor> desc, JS::ObjectOpResult& opresult, bool* defined) const override;

  using mozilla::dom::DOMProxyHandler::defineProperty;

  virtual bool
  ownPropNames(JSContext* cx, JS::Handle<JSObject*> proxy, unsigned flags, JS::AutoIdVector& props) const override;

  virtual bool
  hasOwn(JSContext* cx, JS::Handle<JSObject*> proxy, JS::Handle<jsid> id, bool* bp) const override;

  virtual bool
  get(JSContext* cx, JS::Handle<JSObject*> proxy, JS::Handle<JS::Value> receiver, JS::Handle<jsid> id, JS::MutableHandle<JS::Value> vp) const override;

  virtual const char*
  className(JSContext* cx, JS::Handle<JSObject*> proxy) const override;

  virtual bool
  finalizeInBackground(const JS::Value& priv) const override;

  virtual void
  finalize(JSFreeOp* fop, JSObject* proxy) const override;

  static const DOMProxyHandler*
  getInstance();

  virtual bool
  delete_(JSContext* cx, JS::Handle<JSObject*> proxy, JS::Handle<jsid> id, JS::ObjectOpResult& opresult) const override;

  virtual bool
  getElements(JSContext* cx, JS::Handle<JSObject*> proxy, uint32_t begin, uint32_t end, js::ElementAdder* adder) const override;

  virtual size_t
  objectMoved(JSObject* obj, JSObject* old) const override;
};

MOZ_ALWAYS_INLINE bool
IsProxy(JSObject* obj)
{
  return js::IsProxy(obj) && js::GetProxyHandler(obj) == DOMProxyHandler::getInstance();
}

MOZ_ALWAYS_INLINE nsDOMTokenList*
UnwrapProxy(JSObject* obj)
{
  MOZ_ASSERT(js::IsProxy(obj));
  if (js::GetProxyHandler(obj) != DOMProxyHandler::getInstance()) {
    MOZ_ASSERT(xpc::WrapperFactory::IsXrayWrapper(obj));
    obj = js::UncheckedUnwrap(obj);
  }
  MOZ_ASSERT(IsProxy(obj));
  return static_cast<nsDOMTokenList*>(js::GetProxyReservedSlot(obj, DOM_OBJECT_SLOT).toPrivate());
}

bool
DOMProxyHandler::getOwnPropDescriptor(JSContext* cx, JS::Handle<JSObject*> proxy, JS::Handle<jsid> id, bool ignoreNamedProps, JS::MutableHandle<JS::PropertyDescriptor> desc) const
{
  bool isXray = xpc::WrapperFactory::IsXrayWrapper(proxy);
  uint32_t index = GetArrayIndexFromId(cx, id);
  if (IsArrayIndex(index)) {
    nsDOMTokenList* self = UnwrapProxy(proxy);
    bool found = false;
    DOMString result;
    self->IndexedGetter(index, found, result);
    MOZ_ASSERT(!JS_IsExceptionPending(cx));

    if (found) {
      if (!xpc::StringToJsval(cx, result, desc.value())) {
        return false;
      }
      FillPropertyDescriptor(desc, proxy, true);
      return true;
    }
  }

  JS::Rooted<JSObject*> expando(cx);
  if (!isXray && (expando = GetExpandoObject(proxy))) {
    if (!JS_GetOwnPropertyDescriptorById(cx, expando, id, desc)) {
      return false;
    }
    if (desc.object()) {
      // Pretend the property lives on the wrapper.
      desc.object().set(proxy);
      return true;
    }
  }

  desc.object().set(nullptr);
  return true;
}

bool
DOMProxyHandler::defineProperty(JSContext* cx, JS::Handle<JSObject*> proxy, JS::Handle<jsid> id, JS::Handle<JS::PropertyDescriptor> desc, JS::ObjectOpResult& opresult, bool* defined) const
{
  if (IsArrayIndex(GetArrayIndexFromId(cx, id))) {
    *defined = true;
    return opresult.failNoIndexedSetter();
  }
  return mozilla::dom::DOMProxyHandler::defineProperty(cx, proxy, id, desc, opresult, defined);
}


bool
DOMProxyHandler::ownPropNames(JSContext* cx, JS::Handle<JSObject*> proxy, unsigned flags, JS::AutoIdVector& props) const
{
  bool isXray = xpc::WrapperFactory::IsXrayWrapper(proxy);

  uint32_t length = UnwrapProxy(proxy)->Length();
  MOZ_ASSERT(int32_t(length) >= 0);
  for (int32_t i = 0; i < int32_t(length); ++i) {
    if (!props.append(INT_TO_JSID(i))) {
      return false;
    }
  }

  JS::Rooted<JSObject*> expando(cx);
  if (!isXray && (expando = DOMProxyHandler::GetExpandoObject(proxy)) &&
      !js::GetPropertyKeys(cx, expando, flags, &props)) {
    return false;
  }

  return true;
}

bool
DOMProxyHandler::hasOwn(JSContext* cx, JS::Handle<JSObject*> proxy, JS::Handle<jsid> id, bool* bp) const
{
  MOZ_ASSERT(!xpc::WrapperFactory::IsXrayWrapper(proxy),
            "Should not have a XrayWrapper here");

  uint32_t index = GetArrayIndexFromId(cx, id);
  if (IsArrayIndex(index)) {
    bool found = false;
    nsDOMTokenList* self = UnwrapProxy(proxy);
    DOMString result;
    self->IndexedGetter(index, found, result);
    MOZ_ASSERT(!JS_IsExceptionPending(cx));
    (void)result;

    *bp = found;
    return true;
  }


  JS::Rooted<JSObject*> expando(cx, GetExpandoObject(proxy));
  if (expando) {
    bool b = true;
    bool ok = JS_HasPropertyById(cx, expando, id, &b);
    *bp = !!b;
    if (!ok || *bp) {
      return ok;
    }
  }

  *bp = false;
  return true;
}

bool
DOMProxyHandler::get(JSContext* cx, JS::Handle<JSObject*> proxy, JS::Handle<JS::Value> receiver, JS::Handle<jsid> id, JS::MutableHandle<JS::Value> vp) const
{
  MOZ_ASSERT(!xpc::WrapperFactory::IsXrayWrapper(proxy),
              "Should not have a XrayWrapper here");

  uint32_t index = GetArrayIndexFromId(cx, id);
  if (IsArrayIndex(index)) {
    nsDOMTokenList* self = UnwrapProxy(proxy);
    bool found = false;
    DOMString result;
    self->IndexedGetter(index, found, result);
    MOZ_ASSERT(!JS_IsExceptionPending(cx));

    if (found) {
      if (!xpc::StringToJsval(cx, result, vp)) {
        return false;
      }
      return true;
    }
    // Even if we don't have this index, we don't forward the
    // get on to our expando object.
  } else {
    { // Scope for expando
      JS::Rooted<JSObject*> expando(cx, DOMProxyHandler::GetExpandoObject(proxy));
      if (expando) {
        bool hasProp;
        if (!JS_HasPropertyById(cx, expando, id, &hasProp)) {
          return false;
        }

        if (hasProp) {
          // Forward the get to the expando object, but our receiver is whatever our
          // receiver is.
          return JS_ForwardGetPropertyTo(cx, expando, id, receiver, vp);
        }
      }
    }
  }

  bool foundOnPrototype;
  if (!GetPropertyOnPrototype(cx, proxy, receiver, id, &foundOnPrototype, vp)) {
    return false;
  }

  if (foundOnPrototype) {
    return true;
  }

  vp.setUndefined();
  return true;
}

const char*
DOMProxyHandler::className(JSContext* cx, JS::Handle<JSObject*> proxy) const
{
  return "DOMTokenList";
}

bool
DOMProxyHandler::finalizeInBackground(const JS::Value& priv) const
{
  return false;
}

void
DOMProxyHandler::finalize(JSFreeOp* fop, JSObject* proxy) const
{
  nsDOMTokenList* self = UnwrapPossiblyNotInitializedDOMObject<nsDOMTokenList>(proxy);
  if (self) {
    ClearWrapper(self, self, proxy);
    AddForDeferredFinalization<nsDOMTokenList>(self);
  }
}

const DOMProxyHandler*
DOMProxyHandler::getInstance()
{
  static const DOMProxyHandler instance;
  return &instance;
}

bool
DOMProxyHandler::delete_(JSContext* cx, JS::Handle<JSObject*> proxy, JS::Handle<jsid> id, JS::ObjectOpResult& opresult) const
{
  MOZ_ASSERT(!xpc::WrapperFactory::IsXrayWrapper(proxy),
            "Should not have a XrayWrapper here");

  uint32_t index = GetArrayIndexFromId(cx, id);
  if (IsArrayIndex(index)) {
    bool deleteSucceeded;
    bool found = false;
    nsDOMTokenList* self = UnwrapProxy(proxy);
    DOMString result;
    self->IndexedGetter(index, found, result);
    MOZ_ASSERT(!JS_IsExceptionPending(cx));
    (void)result;
    deleteSucceeded = !found;
    return deleteSucceeded ? opresult.succeed() : opresult.failCantDelete();
  }

  return dom::DOMProxyHandler::delete_(cx, proxy, id, opresult);
}

bool
DOMProxyHandler::getElements(JSContext* cx, JS::Handle<JSObject*> proxy, uint32_t begin, uint32_t end, js::ElementAdder* adder) const
{
  JS::Rooted<JS::Value> temp(cx);
  MOZ_ASSERT(!xpc::WrapperFactory::IsXrayWrapper(proxy),
             "Should not have a XrayWrapper here");

  nsDOMTokenList* self = UnwrapProxy(proxy);
  uint32_t length = self->Length();
  // Compute the end of the indices we'll get ourselves
  uint32_t ourEnd = std::max(begin, std::min(end, length));

  for (uint32_t index = begin; index < ourEnd; ++index) {
    bool found = false;
    DOMString result;
    self->IndexedGetter(index, found, result);
    MOZ_ASSERT(!JS_IsExceptionPending(cx));

    MOZ_ASSERT(found);
    if (!xpc::StringToJsval(cx, result, &temp)) {
      return false;
    }
    if (!adder->append(cx, temp)) return false;
    continue;
  }

  if (end > ourEnd) {
    JS::Rooted<JSObject*> proto(cx);
    if (!js::GetObjectProto(cx, proxy, &proto)) {
      return false;
    }
    return js::GetElementsWithAdder(cx, proto, proxy, ourEnd, end, adder);
  }

  return true;
}

size_t
DOMProxyHandler::objectMoved(JSObject* obj, JSObject* old) const
{
  nsDOMTokenList* self = UnwrapPossiblyNotInitializedDOMObject<nsDOMTokenList>(obj);
  if (self) {
    UpdateWrapper(self, self, obj, old);
  }

  return 0;
}

static const DOMJSClass sClass = {
  PROXY_CLASS_DEF("DOMTokenList",
                  JSCLASS_IS_DOMJSCLASS | JSCLASS_HAS_RESERVED_SLOTS(1)),
  { prototypes::id::DOMTokenList, prototypes::id::_ID_Count, 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, nsDOMTokenList >::value,
  sNativePropertyHooks,
  FindAssociatedGlobalForNative<nsDOMTokenList>::Get,
  GetProtoObjectHandle,
  GetCCParticipant<nsDOMTokenList>::Get()
};

bool
Wrap(JSContext* aCx, nsDOMTokenList* aObject, nsWrapperCache* aCache, JS::Handle<JSObject*> aGivenProto, JS::MutableHandle<JSObject*> aReflector)
{
  static_assert(!IsBaseOf<NonRefcountedDOMObject, nsDOMTokenList>::value,
                "Shouldn't have wrappercached things that are not refcounted.");
  MOZ_ASSERT(static_cast<nsDOMTokenList*>(aObject) ==
             reinterpret_cast<nsDOMTokenList*>(aObject),
             "Multiple inheritance for nsDOMTokenList 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<nsDOMTokenList> creator(aCx);
  creator.CreateProxyObject(aCx, &sClass.mBase, DOMProxyHandler::getInstance(),
                            proto, aObject, JS::UndefinedHandleValue, 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;
}

static bool
ResolveOwnProperty(JSContext* cx, JS::Handle<JSObject*> wrapper, JS::Handle<JSObject*> obj, JS::Handle<jsid> id, JS::MutableHandle<JS::PropertyDescriptor> desc)
{
  return js::GetProxyHandler(obj)->getOwnPropertyDescriptor(cx, wrapper, id, desc);
}

static bool
EnumerateOwnProperties(JSContext* cx, JS::Handle<JSObject*> wrapper, JS::Handle<JSObject*> obj, JS::AutoIdVector& props)
{
  return js::GetProxyHandler(obj)->ownPropertyKeys(cx, wrapper, props);
}

const NativePropertyHooks sNativePropertyHooks[] = { {
  ResolveOwnProperty,
  EnumerateOwnProperties,
  nullptr,
  { sNativeProperties.Upcast(), nullptr },
  prototypes::id::DOMTokenList,
  constructors::id::DOMTokenList,
  nullptr,
  &DefaultXrayExpandoObjectClass
} };

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

  JS::Rooted<JSObject*> constructorProto(aCx, JS::GetRealmFunctionPrototype(aCx));
  if (!constructorProto) {
    return;
  }

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

  JS::Heap<JSObject*>* protoCache = &aProtoAndIfaceCache.EntrySlotOrCreate(prototypes::id::DOMTokenList);
  JS::Heap<JSObject*>* interfaceCache = &aProtoAndIfaceCache.EntrySlotOrCreate(constructors::id::DOMTokenList);
  dom::CreateInterfaceObjects(aCx, aGlobal, parentProto,
                              &sPrototypeClass.mBase, protoCache,
                              nullptr,
                              constructorProto, &sInterfaceObjectClass.mBase, 0, nullptr,
                              interfaceCache,
                              sNativeProperties.Upcast(),
                              nullptr,
                              "DOMTokenList", aDefineOnGlobal,
                              nullptr,
                              false);
}

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

} // namespace DOMTokenList_Binding



} // namespace dom
} // namespace mozilla

Coverage Report

Created: 2018-09-25 14:53