1 files changed, 367 insertions, 0 deletions
diff --git a/js/xpconnect/src/XPCInlines.h b/js/xpconnect/src/XPCInlines.h
new file mode 100644
index 0000000000..bc29c23ff8
--- /dev/null
+++ b/js/xpconnect/src/XPCInlines.h
@@ -0,0 +1,367 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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/. */
+
+/* private inline methods (#include'd by xpcprivate.h). */
+
+#ifndef xpcinlines_h___
+#define xpcinlines_h___
+
+#include <algorithm>
+
+#include "js/PropertyAndElement.h"  // JS_HasProperty, JS_HasPropertyById
+
+/***************************************************************************/
+
+inline void XPCJSRuntime::AddSubjectToFinalizationWJS(
+    nsXPCWrappedJS* wrappedJS) {
+  mSubjectToFinalizationWJS.insertBack(wrappedJS);
+}
+
+/***************************************************************************/
+
+inline bool XPCCallContext::IsValid() const { return mState != INIT_FAILED; }
+
+inline XPCJSContext* XPCCallContext::GetContext() const {
+  CHECK_STATE(HAVE_CONTEXT);
+  return mXPCJSContext;
+}
+
+inline JSContext* XPCCallContext::GetJSContext() const {
+  CHECK_STATE(HAVE_CONTEXT);
+  return mJSContext;
+}
+
+inline XPCCallContext* XPCCallContext::GetPrevCallContext() const {
+  CHECK_STATE(HAVE_CONTEXT);
+  return mPrevCallContext;
+}
+
+inline XPCWrappedNative* XPCCallContext::GetWrapper() const {
+  if (mState == INIT_FAILED) {
+    return nullptr;
+  }
+
+  CHECK_STATE(HAVE_OBJECT);
+  return mWrapper;
+}
+
+inline bool XPCCallContext::CanGetTearOff() const {
+  return mState >= HAVE_OBJECT;
+}
+
+inline XPCWrappedNativeTearOff* XPCCallContext::GetTearOff() const {
+  CHECK_STATE(HAVE_OBJECT);
+  return mTearOff;
+}
+
+inline nsIXPCScriptable* XPCCallContext::GetScriptable() const {
+  CHECK_STATE(HAVE_OBJECT);
+  return mScriptable;
+}
+
+inline XPCNativeSet* XPCCallContext::GetSet() const {
+  CHECK_STATE(HAVE_NAME);
+  return mSet;
+}
+
+inline XPCNativeInterface* XPCCallContext::GetInterface() const {
+  CHECK_STATE(HAVE_NAME);
+  return mInterface;
+}
+
+inline XPCNativeMember* XPCCallContext::GetMember() const {
+  CHECK_STATE(HAVE_NAME);
+  return mMember;
+}
+
+inline bool XPCCallContext::HasInterfaceAndMember() const {
+  return mState >= HAVE_NAME && mInterface && mMember;
+}
+
+inline bool XPCCallContext::GetStaticMemberIsLocal() const {
+  CHECK_STATE(HAVE_NAME);
+  return mStaticMemberIsLocal;
+}
+
+inline unsigned XPCCallContext::GetArgc() const {
+  CHECK_STATE(READY_TO_CALL);
+  return mArgc;
+}
+
+inline JS::Value* XPCCallContext::GetArgv() const {
+  CHECK_STATE(READY_TO_CALL);
+  return mArgv;
+}
+
+inline void XPCCallContext::SetRetVal(const JS::Value& val) {
+  CHECK_STATE(HAVE_ARGS);
+  if (mRetVal) {
+    *mRetVal = val;
+  }
+}
+
+inline jsid XPCCallContext::GetResolveName() const {
+  CHECK_STATE(HAVE_CONTEXT);
+  return GetContext()->GetResolveName();
+}
+
+inline jsid XPCCallContext::SetResolveName(JS::HandleId name) {
+  CHECK_STATE(HAVE_CONTEXT);
+  return GetContext()->SetResolveName(name);
+}
+
+inline XPCWrappedNative* XPCCallContext::GetResolvingWrapper() const {
+  CHECK_STATE(HAVE_OBJECT);
+  return GetContext()->GetResolvingWrapper();
+}
+
+inline XPCWrappedNative* XPCCallContext::SetResolvingWrapper(
+    XPCWrappedNative* w) {
+  CHECK_STATE(HAVE_OBJECT);
+  return GetContext()->SetResolvingWrapper(w);
+}
+
+inline uint16_t XPCCallContext::GetMethodIndex() const {
+  CHECK_STATE(HAVE_OBJECT);
+  return mMethodIndex;
+}
+
+/***************************************************************************/
+inline XPCNativeInterface* XPCNativeMember::GetInterface() const {
+  XPCNativeMember* arrayStart =
+      const_cast<XPCNativeMember*>(this - mIndexInInterface);
+  size_t arrayStartOffset = XPCNativeInterface::OffsetOfMembers();
+  char* xpcNativeInterfaceStart =
+      reinterpret_cast<char*>(arrayStart) - arrayStartOffset;
+  return reinterpret_cast<XPCNativeInterface*>(xpcNativeInterfaceStart);
+}
+
+/***************************************************************************/
+
+inline const nsIID* XPCNativeInterface::GetIID() const { return &mInfo->IID(); }
+
+inline const char* XPCNativeInterface::GetNameString() const {
+  return mInfo->Name();
+}
+
+inline XPCNativeMember* XPCNativeInterface::FindMember(jsid name) const {
+  const XPCNativeMember* member = mMembers;
+  for (int i = (int)mMemberCount; i > 0; i--, member++) {
+    if (member->GetName() == name) {
+      return const_cast<XPCNativeMember*>(member);
+    }
+  }
+  return nullptr;
+}
+
+/* static */
+inline size_t XPCNativeInterface::OffsetOfMembers() {
+  return offsetof(XPCNativeInterface, mMembers);
+}
+
+/***************************************************************************/
+
+inline XPCNativeSetKey::XPCNativeSetKey(XPCNativeSet* baseSet,
+                                        XPCNativeInterface* addition)
+    : mCx(nullptr), mBaseSet(baseSet), mAddition(addition) {
+  MOZ_ASSERT(mBaseSet);
+  MOZ_ASSERT(mAddition);
+  MOZ_ASSERT(!mBaseSet->HasInterface(mAddition));
+}
+
+/***************************************************************************/
+
+inline bool XPCNativeSet::FindMember(jsid name, XPCNativeMember** pMember,
+                                     uint16_t* pInterfaceIndex) const {
+  XPCNativeInterface* const* iface;
+  int count = (int)mInterfaceCount;
+  int i;
+
+  // look for interface names first
+
+  for (i = 0, iface = mInterfaces; i < count; i++, iface++) {
+    if (name == (*iface)->GetName()) {
+      if (pMember) {
+        *pMember = nullptr;
+      }
+      if (pInterfaceIndex) {
+        *pInterfaceIndex = (uint16_t)i;
+      }
+      return true;
+    }
+  }
+
+  // look for method names
+  for (i = 0, iface = mInterfaces; i < count; i++, iface++) {
+    XPCNativeMember* member = (*iface)->FindMember(name);
+    if (member) {
+      if (pMember) {
+        *pMember = member;
+      }
+      if (pInterfaceIndex) {
+        *pInterfaceIndex = (uint16_t)i;
+      }
+      return true;
+    }
+  }
+  return false;
+}
+
+inline bool XPCNativeSet::FindMember(
+    jsid name, XPCNativeMember** pMember,
+    RefPtr<XPCNativeInterface>* pInterface) const {
+  uint16_t index;
+  if (!FindMember(name, pMember, &index)) {
+    return false;
+  }
+  *pInterface = mInterfaces[index];
+  return true;
+}
+
+inline bool XPCNativeSet::FindMember(JS::HandleId name,
+                                     XPCNativeMember** pMember,
+                                     RefPtr<XPCNativeInterface>* pInterface,
+                                     XPCNativeSet* protoSet,
+                                     bool* pIsLocal) const {
+  XPCNativeMember* Member;
+  RefPtr<XPCNativeInterface> Interface;
+  XPCNativeMember* protoMember;
+
+  if (!FindMember(name, &Member, &Interface)) {
+    return false;
+  }
+
+  *pMember = Member;
+
+  *pIsLocal = !Member || !protoSet ||
+              (protoSet != this &&
+               !protoSet->MatchesSetUpToInterface(this, Interface) &&
+               (!protoSet->FindMember(name, &protoMember, (uint16_t*)nullptr) ||
+                protoMember != Member));
+
+  *pInterface = std::move(Interface);
+
+  return true;
+}
+
+inline bool XPCNativeSet::HasInterface(XPCNativeInterface* aInterface) const {
+  XPCNativeInterface* const* pp = mInterfaces;
+
+  for (int i = (int)mInterfaceCount; i > 0; i--, pp++) {
+    if (aInterface == *pp) {
+      return true;
+    }
+  }
+  return false;
+}
+
+inline bool XPCNativeSet::MatchesSetUpToInterface(
+    const XPCNativeSet* other, XPCNativeInterface* iface) const {
+  int count = std::min(int(mInterfaceCount), int(other->mInterfaceCount));
+
+  XPCNativeInterface* const* pp1 = mInterfaces;
+  XPCNativeInterface* const* pp2 = other->mInterfaces;
+
+  for (int i = (int)count; i > 0; i--, pp1++, pp2++) {
+    XPCNativeInterface* cur = (*pp1);
+    if (cur != (*pp2)) {
+      return false;
+    }
+    if (cur == iface) {
+      return true;
+    }
+  }
+  return false;
+}
+
+/***************************************************************************/
+
+inline JSObject* XPCWrappedNativeTearOff::GetJSObjectPreserveColor() const {
+  return mJSObject.unbarrieredGetPtr();
+}
+
+inline JSObject* XPCWrappedNativeTearOff::GetJSObject() { return mJSObject; }
+
+inline void XPCWrappedNativeTearOff::SetJSObject(JSObject* JSObj) {
+  MOZ_ASSERT(!IsMarked());
+  mJSObject = JSObj;
+}
+
+inline void XPCWrappedNativeTearOff::JSObjectMoved(JSObject* obj,
+                                                   const JSObject* old) {
+  MOZ_ASSERT(!IsMarked());
+  MOZ_ASSERT(mJSObject == old);
+  mJSObject = obj;
+}
+
+inline XPCWrappedNativeTearOff::~XPCWrappedNativeTearOff() {
+  MOZ_COUNT_DTOR(XPCWrappedNativeTearOff);
+  MOZ_ASSERT(!(GetInterface() || GetNative() || GetJSObjectPreserveColor()),
+             "tearoff not empty in dtor");
+}
+
+/***************************************************************************/
+
+inline void XPCWrappedNative::SweepTearOffs() {
+  for (XPCWrappedNativeTearOff* to = &mFirstTearOff; to;
+       to = to->GetNextTearOff()) {
+    bool marked = to->IsMarked();
+    to->Unmark();
+    if (marked) {
+      continue;
+    }
+
+    // If this tearoff does not have a live dedicated JSObject,
+    // then let's recycle it.
+    if (!to->GetJSObjectPreserveColor()) {
+      to->SetNative(nullptr);
+      to->SetInterface(nullptr);
+    }
+  }
+}
+
+/***************************************************************************/
+
+inline bool xpc_ForcePropertyResolve(JSContext* cx, JS::HandleObject obj,
+                                     jsid idArg) {
+  JS::RootedId id(cx, idArg);
+  bool dummy;
+  return JS_HasPropertyById(cx, obj, id, &dummy);
+}
+
+inline jsid GetJSIDByIndex(JSContext* cx, unsigned index) {
+  XPCJSRuntime* xpcrt = nsXPConnect::GetRuntimeInstance();
+  return xpcrt->GetStringID(index);
+}
+
+inline bool ThrowBadParam(nsresult rv, unsigned paramNum, XPCCallContext& ccx) {
+  XPCThrower::ThrowBadParam(rv, paramNum, ccx);
+  return false;
+}
+
+inline void ThrowBadResult(nsresult result, XPCCallContext& ccx) {
+  XPCThrower::ThrowBadResult(NS_ERROR_XPC_NATIVE_RETURNED_FAILURE, result, ccx);
+}
+
+/***************************************************************************/
+
+inline void xpc::CleanupValue(const nsXPTType& aType, void* aValue,
+                              uint32_t aArrayLen) {
+  // Check if we can do a cheap early return, and only perform the inner call
+  // if we can't. We never have to clean up null pointer types or arithmetic
+  // types.
+  //
+  // NOTE: We can skip zeroing arithmetic types in CleanupValue, as they are
+  // already in a valid state.
+  if (aType.IsArithmetic() || (aType.IsPointer() && !*(void**)aValue)) {
+    return;
+  }
+  xpc::InnerCleanupValue(aType, aValue, aArrayLen);
+}
+
+/***************************************************************************/
+
+#endif /* xpcinlines_h___ */