1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/src/Structures.h	Tue Jul 24 23:53:34 2012 -0700
     1.3 @@ -0,0 +1,60 @@
     1.4 +/* vim: set ts=4 sw=4 tw=99 et
     1.5 + *
     1.6 + * Copyright (C) 2012 David Anderson
     1.7 + *
     1.8 + * This file is part of JITCraft.
     1.9 + *
    1.10 + * JITCraft is free software: you can redistribute it and/or modify it under
    1.11 + * the terms of the GNU General Public License as published by the Free
    1.12 + * Software Foundation, either version 3 of the License, or (at your option)
    1.13 + * any later version.
    1.14 + * 
    1.15 + * Foobar is distributed in the hope that it will be useful, but WITHOUT ANY
    1.16 + * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
    1.17 + * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
    1.18 + *
    1.19 + * You should have received a copy of the GNU General Public License along with
    1.20 + * JITCraft. If not, see http://www.gnu.org/licenses/.
    1.21 + */
    1.22 +#ifndef _include_jc_structure_h_
    1.23 +#define _include_jc_structure_h_
    1.24 +
    1.25 +#include "Objects.h"
    1.26 +#include "Handles.h"
    1.27 +#include "Vector.h"
    1.28 +
    1.29 +namespace ke {
    1.30 +
    1.31 +class Type;
    1.32 +class String;
    1.33 +class FixedArray;
    1.34 +
    1.35 +// When describing composite structures, the GC must be able to trace interior
    1.36 +// references to Objects. To make this possible, maps that describe composite
    1.37 +// structures must provide a list of offsets into their objects that are
    1.38 +// traceable. StructureBufferBuilder assists with this.
    1.39 +class StructureBufferBuilder
    1.40 +{
    1.41 +  public:
    1.42 +    StructureBufferBuilder();
    1.43 +
    1.44 +    bool add(Handle<Type> type, unsigned *offset);
    1.45 +
    1.46 +    unsigned structureSize() const {
    1.47 +        return size_;
    1.48 +    }
    1.49 +    unsigned traceableOffsetCount() const {
    1.50 +        return offsets_.length();
    1.51 +    }
    1.52 +    const unsigned *offsets() {
    1.53 +        return offsets_.buffer();
    1.54 +    }
    1.55 +
    1.56 +  private:
    1.57 +    Vector<unsigned> offsets_;
    1.58 +    unsigned size_;
    1.59 +};
    1.60 +
    1.61 +}
    1.62 +
    1.63 +#endif // _include_jc_structure_h_