/* 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);

    static ByteArray *New(Zone *zone, Handle<Map> map, 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_