src/squirrel/squirrel/sqclass.h

   1 /*      see copyright notice in squirrel.h */
   2 #ifndef _SQCLASS_H_
   3 #define _SQCLASS_H_
   4
   5 struct SQInstance;
   6
   7 struct SQClassMember {
   8         SQClassMember(){}
   9         SQClassMember(const SQClassMember &o) {
  10                 val = o.val;
  11                 attrs = o.attrs;
  12         }
  13         SQObjectPtr val;
  14         SQObjectPtr attrs;
  15 };
  16
  17 typedef sqvector<SQClassMember> SQClassMemberVec;
  18
  19 struct SQClass : public CHAINABLE_OBJ
  20 {
  21         SQClass(SQSharedState *ss,SQClass *base);
  22 public:
  23         static SQClass* Create(SQSharedState *ss,SQClass *base) {
  24                 SQClass *newclass = (SQClass *)SQ_MALLOC(sizeof(SQClass));
  25                 new (newclass) SQClass(ss, base);
  26                 return newclass;
  27         }
  28         ~SQClass();
  29         bool NewSlot(const SQObjectPtr &key,const SQObjectPtr &val);
  30         bool Get(const SQObjectPtr &key,SQObjectPtr &val) {
  31                 if(_members->Get(key,val)) {
  32                         val = (type(val) == OT_INTEGER?_defaultvalues[_integer(val)].val:_methods[_integer(val)].val);
  33                         return true;
  34                 }
  35                 return false;
  36         }
  37         bool SetAttributes(const SQObjectPtr &key,const SQObjectPtr &val);
  38         bool GetAttributes(const SQObjectPtr &key,SQObjectPtr &outval);
  39         void Lock() { _locked = true; if(_base) _base->Lock(); }
  40         void Release() { sq_delete(this, SQClass);      }
  41         void Finalize();
  42         void Mark(SQCollectable ** );
  43         int Next(const SQObjectPtr &refpos, SQObjectPtr &outkey, SQObjectPtr &outval);
  44         SQInstance *CreateInstance();
  45         SQTable *_members;
  46         //SQTable *_properties;
  47         SQClass *_base;
  48         SQClassMemberVec _defaultvalues;
  49         SQClassMemberVec _methods;
  50         SQObjectPtrVec _metamethods;
  51         SQObjectPtr _attributes;
  52         unsigned int _typetag;
  53         bool _locked;
  54 };
  55
  56 struct SQInstance : public SQDelegable
  57 {
  58         void Init(SQSharedState *ss);
  59         SQInstance(SQSharedState *ss, SQClass *c);
  60         SQInstance(SQSharedState *ss, SQInstance *c);
  61 public:
  62         static SQInstance* Create(SQSharedState *ss,SQClass *theclass) {
  63                 SQInstance *newinst = (SQInstance *)SQ_MALLOC(sizeof(SQInstance));
  64                 new (newinst) SQInstance(ss, theclass);
  65                 return newinst;
  66         }
  67         SQInstance *Clone(SQSharedState *ss)
  68         {
  69                 SQInstance *newinst = (SQInstance *)SQ_MALLOC(sizeof(SQInstance));
  70                 new (newinst) SQInstance(ss, this);
  71                 return newinst;
  72         }
  73         ~SQInstance();
  74         bool Get(const SQObjectPtr &key,SQObjectPtr &val)  {
  75                 if(_class->_members->Get(key,val)) {
  76                         val = (type(val) == OT_INTEGER?_values[_integer(val)]:_class->_methods[_integer(val)].val);
  77                         return true;
  78                 }
  79                 return false;
  80         }
  81         bool Set(const SQObjectPtr &key,const SQObjectPtr &val) {
  82                 SQObjectPtr idx;
  83                 if(_class->_members->Get(key,idx) && type(idx) == OT_INTEGER) {
  84             _values[_integer(idx)] = val;
  85                         return true;
  86                 }
  87                 return false;
  88         }
  89         void Release() {
  90                 if (_hook) { _hook(_userpointer,0);}
  91                 sq_delete(this, SQInstance);
  92         }
  93         void Finalize();
  94         void Mark(SQCollectable ** );
  95         bool InstanceOf(SQClass *trg);
  96         bool GetMetaMethod(SQMetaMethod mm,SQObjectPtr &res);
  97
  98         SQClass *_class;
  99         SQUserPointer _userpointer;
 100         SQRELEASEHOOK _hook;
 101         SQObjectPtrVec _values;
 102 };
 103
 104 #endif //_SQCLASS_H_