dvander@168: /* vim: set ts=4 sw=4 tw=99 et:
dvander@168:  *
dvander@168:  * Copyright (C) 2012 David Anderson
dvander@168:  *
dvander@168:  * This file is part of SourcePawn.
dvander@168:  *
dvander@168:  * SourcePawn is free software: you can redistribute it and/or modify it under
dvander@168:  * the terms of the GNU General Public License as published by the Free
dvander@168:  * Software Foundation, either version 3 of the License, or (at your option)
dvander@168:  * any later version.
dvander@168:  * 
dvander@168:  * SourcePawn is distributed in the hope that it will be useful, but WITHOUT ANY
dvander@168:  * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
dvander@168:  * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
dvander@168:  *
dvander@168:  * You should have received a copy of the GNU General Public License along with
dvander@168:  * SourcePawn. If not, see http://www.gnu.org/licenses/.
dvander@168:  */
dvander@168: #ifndef _include_sourcepawn_box_h_
dvander@168: #define _include_sourcepawn_box_h_
dvander@168: 
dvander@168: #include "Objects.h"
dvander@168: #include "Handles.h"
dvander@168: #include "Heap.h"
dvander@168: #include "Types.h"
dvander@168: 
dvander@168: namespace ke {
dvander@168: 
dvander@168: class Type;
dvander@168: 
dvander@168: class Box : public Object
dvander@168: {
dvander@168:     Barriered<Type> type_;
dvander@168:     union {
dvander@168:         Object *obj;
dvander@168:         float f;
dvander@168:         int i32;
dvander@168:     } u;
dvander@168: 
dvander@168:   public:
dvander@168:     static Box *New(Zone *zone, Handle<Type> type, int i32, Heap::Tenure = Heap::Tenure_Default);
dvander@168:     static Box *New(Zone *zone, Handle<Type> type, float f, Heap::Tenure = Heap::Tenure_Default);
dvander@169:     static Box *NewObj(Zone *zone, Handle<Type> type, Handle<Object> obj,
dvander@169:                        Heap::Tenure = Heap::Tenure_Default);
dvander@168: 
dvander@168:     Type *type() {
dvander@168:         return type_;
dvander@168:     }
dvander@168: 
dvander@168:     int toInt32() {
dvander@168:         assert(type()->pod() == PrimitiveType_Int32);
dvander@168:         return u.i32;
dvander@168:     }
dvander@168:     float toFloat() {
dvander@168:         assert(type()->pod() == PrimitiveType_Float);
dvander@168:         return u.f;
dvander@168:     }
dvander@169:     Object *toObject() {
dvander@169:         assert(type()->isTraceable());
dvander@169:         return u.obj;
dvander@169:     }
dvander@168: 
dvander@168:     // Begin GC descriptor.
dvander@168:     static inline size_t offsetOfType() {
dvander@168:         return OFFSETOF(Box, type_);
dvander@168:     }
dvander@168:     static inline size_t offsetOfObj() {
dvander@168:         return OFFSETOF(Box, u.obj);
dvander@168:     }
dvander@168:     // End GC descriptor.
dvander@168:     
dvander@168:     static inline Box *cast(Object *obj) {
dvander@168:         assert(!obj || obj->is(MapKind_Box));
dvander@168:         return reinterpret_cast<Box *>(obj);
dvander@168:     }
dvander@168: };
dvander@168: 
dvander@168: }
dvander@168: 
dvander@168: #endif // _include_sourcepawn_box_h_
dvander@168: