1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/jitcraft/Reference.h	Sun Jul 01 00:00:27 2012 -0700
     1.3 @@ -0,0 +1,63 @@
     1.4 +/*
     1.5 + * Copyright (C) 2012 David Anderson
     1.6 + *
     1.7 + * This file is part of JITCraft.
     1.8 + *
     1.9 + * JITCraft is free software: you can redistribute it and/or modify it under
    1.10 + * the terms of the GNU General Public License as published by the Free
    1.11 + * Software Foundation, either version 3 of the License, or (at your option)
    1.12 + * any later version.
    1.13 + * 
    1.14 + * Foobar is distributed in the hope that it will be useful, but WITHOUT ANY
    1.15 + * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
    1.16 + * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
    1.17 + *
    1.18 + * You should have received a copy of the GNU General Public License along with
    1.19 + * JITCraft. If not, see http://www.gnu.org/licenses/.
    1.20 + */
    1.21 +#ifndef _include_jitcraft_reference_h_
    1.22 +#define _include_jitcraft_reference_h_
    1.23 +
    1.24 +#include "Heap.h"
    1.25 +#include "Barriers.h"
    1.26 +#include "Stack.h"
    1.27 +
    1.28 +namespace jc {
    1.29 +
    1.30 +class Array;
    1.31 +
    1.32 +// A Reference is a typed pointer to another location in memory.
    1.33 +class Reference : public Object
    1.34 +{
    1.35 +    void *location_;
    1.36 +    LocalSlot slot_;
    1.37 +    Barriered<Array> base_;
    1.38 +
    1.39 +  public:
    1.40 +    // :TODO: handles
    1.41 +    static Reference *NewStack(Zone *zone, void *location, Heap::Tenure tenure = Heap::Tenure_Default);
    1.42 +    static Reference *NewStack(Zone *zone, const LocalSlot &slot, Heap::Tenure tenure = Heap::Tenure_Default);
    1.43 +    static Reference *NewArray(Zone *zone, Array *base, size_t index, Heap::Tenure tenure = Heap::Tenure_Default);
    1.44 +
    1.45 +    int getInt() {
    1.46 +        return *reinterpret_cast<int *>(location_);
    1.47 +    }
    1.48 +    void setInt(int i) {
    1.49 +        *reinterpret_cast<int *>(location_) = i;
    1.50 +    }
    1.51 +    float getFloat() {
    1.52 +        return *reinterpret_cast<float *>(location_);
    1.53 +    }
    1.54 +    void setFloat(float f) {
    1.55 +        *reinterpret_cast<float *>(location_) = f;
    1.56 +    }
    1.57 +
    1.58 +    static inline Reference *cast(Object *obj) {
    1.59 +        assert(obj->is(MapKind_Reference));
    1.60 +        return reinterpret_cast<Reference *>(obj);
    1.61 +    }
    1.62 +};
    1.63 +
    1.64 +}
    1.65 +
    1.66 +#endif // _include_jitcraft_reference_h_