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

 *

 * Copyright (C) 2012 David Anderson

 *

 * This file is part of SourcePawn.

 *

 * SourcePawn 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.

 * 

 * SourcePawn 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

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

 */

#include "Structures.h"

#include "Zone.h"

#include "Types.h"

#include "Spaces-inl.h"

#include "Heap-inl.h"

using namespace ke;

StructureBufferBuilder::StructureBufferBuilder()

  : size_(0)

{

}

bool

StructureBufferBuilder::add(Handle<Type> type, unsigned *offset)

{

    *offset = size_;

    if (!type->isTraceable()) {

        // For now, assume the size of primitives is 4-byte.

        assert(type->isInt32() || type->isFloat());

        size_ += 4;

        return true;

    }

    if (!offsets_.append(size_))

        return false;

    size_ += sizeof(Object *);

    return true;

}

Descriptor *

Descriptor::New(Zone *zone, Handle<String> name, Handle<Type> type, unsigned offset)

{

    Local<Descriptor> desc(zone,

        Descriptor::cast(zone->allocate(MapKind_Descriptor, sizeof(Descriptor), Heap::Tenure_Old)));

    if (!desc)

        return NULL;

    desc->name_ = name;

    desc->type_ = type;

    desc->offset_ = offset;

    return desc;

}