/* vim: set ts=4 sw=4 tw=99 et

  *

  * Copyright (C) 2012 David Anderson

  *

  * This file is part of JITCraft.

  *

  * JITCraft is free software: you can redistribute it and/or modify it under

  * the terms of the GNU General Public License as published by the Free

  * Software Foundation, either version 3 of the License, or (at your option)

  * any later version.

  * 

  * Foobar is distributed in the hope that it will be useful, but WITHOUT ANY

  * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS

  * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

  *

  * You should have received a copy of the GNU General Public License along with

  * JITCraft. If not, see http://www.gnu.org/licenses/.

  */

 #ifndef _include_jitcraft_fixedarray_h_

 #define _include_jitcraft_fixedarray_h_

 #include "Heap.h"

 namespace ke {

 // A fixed-length array that contains Object * slots.

 class FixedArray : public Object

 {

     uint32 length_;

   private:

     Object **vec() {

         return reinterpret_cast<Object **>(this + 1);

     }

   public:

     static FixedArray *New(Zone *zone, unsigned length, Heap::Tenure tenure);

     unsigned length() {

         return length_;

     }

     Object *at(size_t i) {

         assert(i < length());

         return vec()[i];

     }

     void set(Zone *zone, size_t i, Object *obj) {

         assert(i < length());

         write(zone, &vec()[i], obj);

     }

     static size_t SizeFor(unsigned length) {

         return sizeof(FixedArray) + sizeof(Object *) * length;

     }

     static inline FixedArray *cast(Object *obj) {

         assert(!obj || obj->is(MapKind_FixedArray));

         return reinterpret_cast<FixedArray *>(obj);

     }

 };

 // A fixed-length array containing raw bytes.

 class ByteArray : public Object

 {

     uint32 length_;

   public:

     static ByteArray *New(Zone *zone, unsigned length, Heap::Tenure tenure = Heap::Tenure_Default);

     unsigned length() {

         return length_;

     }

     Address raw() {

         return reinterpret_cast<uint8 *>(this + 1);

     }

     static size_t SizeFor(unsigned length) {

         return Align(sizeof(ByteArray) + sizeof(uint8) * length, kObjectAlignment);

     }

     static inline ByteArray *cast(Object *obj) {

         assert(!obj || obj->is(MapKind_ByteArray));

         return reinterpret_cast<ByteArray *>(obj);

     }

 };

 }

 #endif // _include_jitcraft_fixedarray_h_