js/src/vm/JSAtomState.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 vm_JSAtomState_h
   8 #define vm_JSAtomState_h
   9
  10 #include "gc/Barrier.h"
  11 #include "js/ProtoKey.h"
  12 #include "js/Symbol.h"
  13 #include "vm/CommonPropertyNames.h"
  14
  15 namespace js {
  16 class PropertyName;
  17 }  // namespace js
  18
  19 /* Various built-in or commonly-used names pinned on first context. */
  20 struct JSAtomState {
  21 #define PROPERTYNAME_FIELD(id, text) \
  22   js::ImmutableTenuredPtr<js::PropertyName*> id;
  23   FOR_EACH_COMMON_PROPERTYNAME(PROPERTYNAME_FIELD)
  24 #undef PROPERTYNAME_FIELD
  25 #define PROPERTYNAME_FIELD(name, clasp) \
  26   js::ImmutableTenuredPtr<js::PropertyName*> name;
  27   JS_FOR_EACH_PROTOTYPE(PROPERTYNAME_FIELD)
  28 #undef PROPERTYNAME_FIELD
  29 #define PROPERTYNAME_FIELD(name) \
  30   js::ImmutableTenuredPtr<js::PropertyName*> name;
  31   JS_FOR_EACH_WELL_KNOWN_SYMBOL(PROPERTYNAME_FIELD)
  32 #undef PROPERTYNAME_FIELD
  33 #define PROPERTYNAME_FIELD(name) \
  34   js::ImmutableTenuredPtr<js::PropertyName*> Symbol_##name;
  35   JS_FOR_EACH_WELL_KNOWN_SYMBOL(PROPERTYNAME_FIELD)
  36 #undef PROPERTYNAME_FIELD
  37
  38   js::ImmutableTenuredPtr<js::PropertyName*>* wellKnownSymbolNames() {
  39 #define FIRST_PROPERTYNAME_FIELD(name) return &name;
  40     JS_FOR_EACH_WELL_KNOWN_SYMBOL(FIRST_PROPERTYNAME_FIELD)
  41 #undef FIRST_PROPERTYNAME_FIELD
  42   }
  43
  44   js::ImmutableTenuredPtr<js::PropertyName*>* wellKnownSymbolDescriptions() {
  45 #define FIRST_PROPERTYNAME_FIELD(name) return &Symbol_##name;
  46     JS_FOR_EACH_WELL_KNOWN_SYMBOL(FIRST_PROPERTYNAME_FIELD)
  47 #undef FIRST_PROPERTYNAME_FIELD
  48   }
  49 };
  50
  51 namespace js {
  52
  53 #define NAME_OFFSET(name) offsetof(JSAtomState, name)
  54
  55 inline Handle<PropertyName*> AtomStateOffsetToName(const JSAtomState& atomState,
  56                                                    size_t offset) {
  57   return *reinterpret_cast<js::ImmutableTenuredPtr<js::PropertyName*>*>(
  58       (char*)&atomState + offset);
  59 }
  60
  61 } /* namespace js */
  62
  63 #endif /* vm_JSAtomState_h */