dvander@85: /* vim: set ts=4 sw=4 tw=99 et
dvander@85:  *
dvander@85:  * Copyright (C) 2012 David Anderson
dvander@85:  *
dvander@85:  * This file is part of JITCraft.
dvander@85:  *
dvander@85:  * JITCraft is free software: you can redistribute it and/or modify it under
dvander@85:  * the terms of the GNU General Public License as published by the Free
dvander@85:  * Software Foundation, either version 3 of the License, or (at your option)
dvander@85:  * any later version.
dvander@85:  * 
dvander@85:  * Foobar is distributed in the hope that it will be useful, but WITHOUT ANY
dvander@85:  * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
dvander@85:  * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
dvander@85:  *
dvander@85:  * You should have received a copy of the GNU General Public License along with
dvander@85:  * JITCraft. If not, see http://www.gnu.org/licenses/.
dvander@85:  */
dvander@85: #ifndef _include_jc_structure_h_
dvander@85: #define _include_jc_structure_h_
dvander@85: 
dvander@85: #include "Objects.h"
dvander@85: #include "Handles.h"
dvander@85: #include "Vector.h"
dvander@85: 
dvander@85: namespace ke {
dvander@85: 
dvander@85: class Type;
dvander@85: class String;
dvander@85: class FixedArray;
dvander@85: 
dvander@85: // When describing composite structures, the GC must be able to trace interior
dvander@85: // references to Objects. To make this possible, maps that describe composite
dvander@85: // structures must provide a list of offsets into their objects that are
dvander@85: // traceable. StructureBufferBuilder assists with this.
dvander@85: class StructureBufferBuilder
dvander@85: {
dvander@85:   public:
dvander@85:     StructureBufferBuilder();
dvander@85: 
dvander@85:     bool add(Handle<Type> type, unsigned *offset);
dvander@85: 
dvander@85:     unsigned structureSize() const {
dvander@85:         return size_;
dvander@85:     }
dvander@85:     unsigned traceableOffsetCount() const {
dvander@85:         return offsets_.length();
dvander@85:     }
dvander@85:     const unsigned *offsets() {
dvander@85:         return offsets_.buffer();
dvander@85:     }
dvander@85: 
dvander@85:   private:
dvander@85:     Vector<unsigned> offsets_;
dvander@85:     unsigned size_;
dvander@85: };
dvander@85: 
dvander@85: }
dvander@85: 
dvander@85: #endif // _include_jc_structure_h_