dom/base/RustTypes.h

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #ifndef mozilla_dom_RustTypes_h
   8 #define mozilla_dom_RustTypes_h
   9
  10 #include "nsDebug.h"
  11
  12 #define STATE_HELPERS(Type)                                    \
  13   using InternalType = decltype(bits);                         \
  14                                                                \
  15   constexpr Type() : bits{0} {}                                \
  16                                                                \
  17   explicit constexpr Type(InternalType aBits) : bits{aBits} {} \
  18                                                                \
  19   bool IsEmpty() const { return bits == 0; }                   \
  20                                                                \
  21   bool HasAtLeastOneOfStates(Type aStates) const {             \
  22     return bool((*this) & aStates);                            \
  23   }                                                            \
  24                                                                \
  25   bool HasState(Type aState) const {                           \
  26     NS_ASSERTION(!(aState.bits & (aState.bits - 1)),           \
  27                  "When calling HasState, "                     \
  28                  "argument has to contain only one state!");   \
  29     return HasAtLeastOneOfStates(aState);                      \
  30   }                                                            \
  31                                                                \
  32   bool HasAllStates(Type aStates) const {                      \
  33     return ((*this) & aStates) == aStates;                     \
  34   }                                                            \
  35                                                                \
  36   InternalType GetInternalValue() const { return bits; }
  37
  38 #include "mozilla/dom/GeneratedElementDocumentState.h"
  39
  40 #endif