1 /* see copyright notice in squirrel.h */
2 #ifndef _SQOBJECT_H_
3 #define _SQOBJECT_H_
4
5 #include "squtils.h"
6
7 #ifdef _SQ64
8 #define UINT_MINUS_ONE (0xFFFFFFFFFFFFFFFF)
9 #else
10 #define UINT_MINUS_ONE (0xFFFFFFFF)
11 #endif
12
13 #define SQ_CLOSURESTREAM_HEAD (('S'<<24)|('Q'<<16)|('I'<<8)|('R'))
14 #define SQ_CLOSURESTREAM_PART (('P'<<24)|('A'<<16)|('R'<<8)|('T'))
15 #define SQ_CLOSURESTREAM_TAIL (('T'<<24)|('A'<<16)|('I'<<8)|('L'))
16
17 struct SQSharedState;
18
19 enum SQMetaMethod{
20 MT_ADD=0,
21 MT_SUB=1,
22 MT_MUL=2,
23 MT_DIV=3,
24 MT_UNM=4,
25 MT_MODULO=5,
26 MT_SET=6,
27 MT_GET=7,
28 MT_TYPEOF=8,
29 MT_NEXTI=9,
30 MT_CMP=10,
31 MT_CALL=11,
32 MT_CLONED=12,
33 MT_NEWSLOT=13,
34 MT_DELSLOT=14,
35 MT_TOSTRING=15,
36 MT_NEWMEMBER=16,
37 MT_INHERITED=17,
38 MT_LAST = 18
39 };
40
41 #define MM_ADD _SC("_add")
42 #define MM_SUB _SC("_sub")
43 #define MM_MUL _SC("_mul")
44 #define MM_DIV _SC("_div")
45 #define MM_UNM _SC("_unm")
46 #define MM_MODULO _SC("_modulo")
47 #define MM_SET _SC("_set")
48 #define MM_GET _SC("_get")
49 #define MM_TYPEOF _SC("_typeof")
50 #define MM_NEXTI _SC("_nexti")
51 #define MM_CMP _SC("_cmp")
52 #define MM_CALL _SC("_call")
53 #define MM_CLONED _SC("_cloned")
54 #define MM_NEWSLOT _SC("_newslot")
55 #define MM_DELSLOT _SC("_delslot")
56 #define MM_TOSTRING _SC("_tostring")
57 #define MM_NEWMEMBER _SC("_newmember")
58 #define MM_INHERITED _SC("_inherited")
59
60
61 #define _CONSTRUCT_VECTOR(type,size,ptr) { \
62 for(SQInteger n = 0; n < ((SQInteger)size); n++) { \
63 new (&ptr[n]) type(); \
64 } \
65 }
66
67 #define _DESTRUCT_VECTOR(type,size,ptr) { \
68 for(SQInteger nl = 0; nl < ((SQInteger)size); nl++) { \
69 ptr[nl].~type(); \
70 } \
71 }
72
73 #define _COPY_VECTOR(dest,src,size) { \
74 for(SQInteger _n_ = 0; _n_ < ((SQInteger)size); _n_++) { \
75 dest[_n_] = src[_n_]; \
76 } \
77 }
78
79 #define _NULL_SQOBJECT_VECTOR(vec,size) { \
80 for(SQInteger _n_ = 0; _n_ < ((SQInteger)size); _n_++) { \
81 vec[_n_].Null(); \
82 } \
83 }
84
85 #define MINPOWER2 4
86
87 struct SQRefCounted
88 {
89 SQUnsignedInteger _uiRef;
90 struct SQWeakRef *_weakref;
SQRefCountedSQRefCounted91 SQRefCounted() { _uiRef = 0; _weakref = NULL; }
92 virtual ~SQRefCounted();
93 SQWeakRef *GetWeakRef(SQObjectType type);
94 virtual void Release()=0;
95
96 };
97
98 struct SQWeakRef : SQRefCounted
99 {
100 void Release();
101 SQObject _obj;
102 };
103
104 #define _realval(o) (sq_type((o)) != OT_WEAKREF?(SQObject)o:_weakref(o)->_obj)
105
106 struct SQObjectPtr;
107
108 #define __AddRef(type,unval) if(ISREFCOUNTED(type)) \
109 { \
110 unval.pRefCounted->_uiRef++; \
111 }
112
113 #define __Release(type,unval) if(ISREFCOUNTED(type) && ((--unval.pRefCounted->_uiRef)==0)) \
114 { \
115 unval.pRefCounted->Release(); \
116 }
117
118 #define __ObjRelease(obj) { \
119 if((obj)) { \
120 (obj)->_uiRef--; \
121 if((obj)->_uiRef == 0) \
122 (obj)->Release(); \
123 (obj) = NULL; \
124 } \
125 }
126
127 #define __ObjAddRef(obj) { \
128 (obj)->_uiRef++; \
129 }
130
131 #define is_delegable(t) (sq_type(t)&SQOBJECT_DELEGABLE)
132 #define raw_type(obj) _RAW_TYPE((obj)._type)
133
134 #define _integer(obj) ((obj)._unVal.nInteger)
135 #define _float(obj) ((obj)._unVal.fFloat)
136 #define _string(obj) ((obj)._unVal.pString)
137 #define _table(obj) ((obj)._unVal.pTable)
138 #define _array(obj) ((obj)._unVal.pArray)
139 #define _closure(obj) ((obj)._unVal.pClosure)
140 #define _generator(obj) ((obj)._unVal.pGenerator)
141 #define _nativeclosure(obj) ((obj)._unVal.pNativeClosure)
142 #define _userdata(obj) ((obj)._unVal.pUserData)
143 #define _userpointer(obj) ((obj)._unVal.pUserPointer)
144 #define _thread(obj) ((obj)._unVal.pThread)
145 #define _funcproto(obj) ((obj)._unVal.pFunctionProto)
146 #define _class(obj) ((obj)._unVal.pClass)
147 #define _instance(obj) ((obj)._unVal.pInstance)
148 #define _delegable(obj) ((SQDelegable *)(obj)._unVal.pDelegable)
149 #define _weakref(obj) ((obj)._unVal.pWeakRef)
150 #define _outer(obj) ((obj)._unVal.pOuter)
151 #define _refcounted(obj) ((obj)._unVal.pRefCounted)
152 #define _rawval(obj) ((obj)._unVal.raw)
153
154 #define _stringval(obj) (obj)._unVal.pString->_val
155 #define _userdataval(obj) ((SQUserPointer)sq_aligning((obj)._unVal.pUserData + 1))
156
157 #define tofloat(num) ((sq_type(num)==OT_INTEGER)?(SQFloat)_integer(num):_float(num))
158 #define tointeger(num) ((sq_type(num)==OT_FLOAT)?(SQInteger)_float(num):_integer(num))
159 /////////////////////////////////////////////////////////////////////////////////////
160 /////////////////////////////////////////////////////////////////////////////////////
161 #if defined(SQUSEDOUBLE) && !defined(_SQ64) || !defined(SQUSEDOUBLE) && defined(_SQ64)
162 #define SQ_REFOBJECT_INIT() SQ_OBJECT_RAWINIT()
163 #else
164 #define SQ_REFOBJECT_INIT()
165 #endif
166
167 #define _REF_TYPE_DECL(type,_class,sym) \
168 SQObjectPtr(_class * x) \
169 { \
170 SQ_OBJECT_RAWINIT() \
171 _type=type; \
172 _unVal.sym = x; \
173 assert(_unVal.pTable); \
174 _unVal.pRefCounted->_uiRef++; \
175 } \
176 inline SQObjectPtr& operator=(_class *x) \
177 { \
178 SQObjectType tOldType; \
179 SQObjectValue unOldVal; \
180 tOldType=_type; \
181 unOldVal=_unVal; \
182 _type = type; \
183 SQ_REFOBJECT_INIT() \
184 _unVal.sym = x; \
185 _unVal.pRefCounted->_uiRef++; \
186 __Release(tOldType,unOldVal); \
187 return *this; \
188 }
189
190 #define _SCALAR_TYPE_DECL(type,_class,sym) \
191 SQObjectPtr(_class x) \
192 { \
193 SQ_OBJECT_RAWINIT() \
194 _type=type; \
195 _unVal.sym = x; \
196 } \
197 inline SQObjectPtr& operator=(_class x) \
198 { \
199 __Release(_type,_unVal); \
200 _type = type; \
201 SQ_OBJECT_RAWINIT() \
202 _unVal.sym = x; \
203 return *this; \
204 }
205 struct SQObjectPtr : public SQObject
206 {
SQObjectPtrSQObjectPtr207 SQObjectPtr()
208 {
209 SQ_OBJECT_RAWINIT()
210 _type=OT_NULL;
211 _unVal.pUserPointer=NULL;
212 }
SQObjectPtrSQObjectPtr213 SQObjectPtr(const SQObjectPtr &o)
214 {
215 _type = o._type;
216 _unVal = o._unVal;
217 __AddRef(_type,_unVal);
218 }
SQObjectPtrSQObjectPtr219 SQObjectPtr(const SQObject &o)
220 {
221 _type = o._type;
222 _unVal = o._unVal;
223 __AddRef(_type,_unVal);
224 }
_REF_TYPE_DECLSQObjectPtr225 _REF_TYPE_DECL(OT_TABLE,SQTable,pTable)
226 _REF_TYPE_DECL(OT_CLASS,SQClass,pClass)
227 _REF_TYPE_DECL(OT_INSTANCE,SQInstance,pInstance)
228 _REF_TYPE_DECL(OT_ARRAY,SQArray,pArray)
229 _REF_TYPE_DECL(OT_CLOSURE,SQClosure,pClosure)
230 _REF_TYPE_DECL(OT_NATIVECLOSURE,SQNativeClosure,pNativeClosure)
231 _REF_TYPE_DECL(OT_OUTER,SQOuter,pOuter)
232 _REF_TYPE_DECL(OT_GENERATOR,SQGenerator,pGenerator)
233 _REF_TYPE_DECL(OT_STRING,SQString,pString)
234 _REF_TYPE_DECL(OT_USERDATA,SQUserData,pUserData)
235 _REF_TYPE_DECL(OT_WEAKREF,SQWeakRef,pWeakRef)
236 _REF_TYPE_DECL(OT_THREAD,SQVM,pThread)
237 _REF_TYPE_DECL(OT_FUNCPROTO,SQFunctionProto,pFunctionProto)
238
239 _SCALAR_TYPE_DECL(OT_INTEGER,SQInteger,nInteger)
240 _SCALAR_TYPE_DECL(OT_FLOAT,SQFloat,fFloat)
241 _SCALAR_TYPE_DECL(OT_USERPOINTER,SQUserPointer,pUserPointer)
242
243 SQObjectPtr(bool bBool)
244 {
245 SQ_OBJECT_RAWINIT()
246 _type = OT_BOOL;
247 _unVal.nInteger = bBool?1:0;
248 }
249 inline SQObjectPtr& operator=(bool b)
250 {
251 __Release(_type,_unVal);
252 SQ_OBJECT_RAWINIT()
253 _type = OT_BOOL;
254 _unVal.nInteger = b?1:0;
255 return *this;
256 }
257
~SQObjectPtrSQObjectPtr258 ~SQObjectPtr()
259 {
260 __Release(_type,_unVal);
261 }
262
263 inline SQObjectPtr& operator=(const SQObjectPtr& obj)
264 {
265 SQObjectType tOldType;
266 SQObjectValue unOldVal;
267 tOldType=_type;
268 unOldVal=_unVal;
269 _unVal = obj._unVal;
270 _type = obj._type;
271 __AddRef(_type,_unVal);
272 __Release(tOldType,unOldVal);
273 return *this;
274 }
275 inline SQObjectPtr& operator=(const SQObject& obj)
276 {
277 SQObjectType tOldType;
278 SQObjectValue unOldVal;
279 tOldType=_type;
280 unOldVal=_unVal;
281 _unVal = obj._unVal;
282 _type = obj._type;
283 __AddRef(_type,_unVal);
284 __Release(tOldType,unOldVal);
285 return *this;
286 }
NullSQObjectPtr287 inline void Null()
288 {
289 SQObjectType tOldType = _type;
290 SQObjectValue unOldVal = _unVal;
291 _type = OT_NULL;
292 _unVal.raw = (SQRawObjectVal)NULL;
293 __Release(tOldType ,unOldVal);
294 }
295 private:
SQObjectPtrSQObjectPtr296 SQObjectPtr(const SQChar *){} //safety
297 };
298
299
_Swap(SQObject & a,SQObject & b)300 inline void _Swap(SQObject &a,SQObject &b)
301 {
302 SQObjectType tOldType = a._type;
303 SQObjectValue unOldVal = a._unVal;
304 a._type = b._type;
305 a._unVal = b._unVal;
306 b._type = tOldType;
307 b._unVal = unOldVal;
308 }
309
310 /////////////////////////////////////////////////////////////////////////////////////
311 #ifndef NO_GARBAGE_COLLECTOR
312 #define MARK_FLAG 0x80000000
313 struct SQCollectable : public SQRefCounted {
314 SQCollectable *_next;
315 SQCollectable *_prev;
316 SQSharedState *_sharedstate;
317 virtual SQObjectType GetType()=0;
318 virtual void Release()=0;
319 virtual void Mark(SQCollectable **chain)=0;
320 void UnMark();
321 virtual void Finalize()=0;
322 static void AddToChain(SQCollectable **chain,SQCollectable *c);
323 static void RemoveFromChain(SQCollectable **chain,SQCollectable *c);
324 };
325
326
327 #define ADD_TO_CHAIN(chain,obj) AddToChain(chain,obj)
328 #define REMOVE_FROM_CHAIN(chain,obj) {if(!(_uiRef&MARK_FLAG))RemoveFromChain(chain,obj);}
329 #define CHAINABLE_OBJ SQCollectable
330 #define INIT_CHAIN() {_next=NULL;_prev=NULL;_sharedstate=ss;}
331 #else
332
333 #define ADD_TO_CHAIN(chain,obj) ((void)0)
334 #define REMOVE_FROM_CHAIN(chain,obj) ((void)0)
335 #define CHAINABLE_OBJ SQRefCounted
336 #define INIT_CHAIN() ((void)0)
337 #endif
338
339 struct SQDelegable : public CHAINABLE_OBJ {
340 bool SetDelegate(SQTable *m);
341 virtual bool GetMetaMethod(SQVM *v,SQMetaMethod mm,SQObjectPtr &res);
342 SQTable *_delegate;
343 };
344
345 SQUnsignedInteger TranslateIndex(const SQObjectPtr &idx);
346 typedef sqvector<SQObjectPtr> SQObjectPtrVec;
347 typedef sqvector<SQInteger> SQIntVec;
348 const SQChar *GetTypeName(const SQObjectPtr &obj1);
349 const SQChar *IdType2Name(SQObjectType type);
350
351
352
353 #endif //_SQOBJECT_H_
354