Diff: squirrel/sqobject.h

Revision:

0:97a4f8cc534c

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/squirrel/sqobject.h	Tue Dec 16 10:20:34 2014 +0000
@@ -0,0 +1,354 @@
+/*	see copyright notice in squirrel.h */
+#ifndef _SQOBJECT_H_
+#define _SQOBJECT_H_
+
+#include "squtils.h"
+
+#ifdef _SQ64
+#define UINT_MINUS_ONE (0xFFFFFFFFFFFFFFFF)
+#else
+#define UINT_MINUS_ONE (0xFFFFFFFF)
+#endif
+
+#define SQ_CLOSURESTREAM_HEAD (('S'<<24)|('Q'<<16)|('I'<<8)|('R'))
+#define SQ_CLOSURESTREAM_PART (('P'<<24)|('A'<<16)|('R'<<8)|('T'))
+#define SQ_CLOSURESTREAM_TAIL (('T'<<24)|('A'<<16)|('I'<<8)|('L'))
+
+struct SQSharedState;
+
+enum SQMetaMethod{
+	MT_ADD=0,
+	MT_SUB=1,
+	MT_MUL=2,
+	MT_DIV=3,
+	MT_UNM=4,
+	MT_MODULO=5,
+	MT_SET=6,
+	MT_GET=7,
+	MT_TYPEOF=8,
+	MT_NEXTI=9,
+	MT_CMP=10,
+	MT_CALL=11,
+	MT_CLONED=12,
+	MT_NEWSLOT=13,
+	MT_DELSLOT=14,
+	MT_TOSTRING=15,
+	MT_NEWMEMBER=16,
+	MT_INHERITED=17,
+	MT_LAST = 18
+};
+
+#define MM_ADD		_SC("_add")
+#define MM_SUB		_SC("_sub")
+#define MM_MUL		_SC("_mul")
+#define MM_DIV		_SC("_div")
+#define MM_UNM		_SC("_unm")
+#define MM_MODULO	_SC("_modulo")
+#define MM_SET		_SC("_set")
+#define MM_GET		_SC("_get")
+#define MM_TYPEOF	_SC("_typeof")
+#define MM_NEXTI	_SC("_nexti")
+#define MM_CMP		_SC("_cmp")
+#define MM_CALL		_SC("_call")
+#define MM_CLONED	_SC("_cloned")
+#define MM_NEWSLOT	_SC("_newslot")
+#define MM_DELSLOT	_SC("_delslot")
+#define MM_TOSTRING	_SC("_tostring")
+#define MM_NEWMEMBER _SC("_newmember")
+#define MM_INHERITED _SC("_inherited")
+
+
+#define _CONSTRUCT_VECTOR(type,size,ptr) { \
+	for(SQInteger n = 0; n < ((SQInteger)size); n++) { \
+			new (&ptr[n]) type(); \
+		} \
+}
+
+#define _DESTRUCT_VECTOR(type,size,ptr) { \
+	for(SQInteger nl = 0; nl < ((SQInteger)size); nl++) { \
+			ptr[nl].~type(); \
+	} \
+}
+
+#define _COPY_VECTOR(dest,src,size) { \
+	for(SQInteger _n_ = 0; _n_ < ((SQInteger)size); _n_++) { \
+		dest[_n_] = src[_n_]; \
+	} \
+}
+
+#define _NULL_SQOBJECT_VECTOR(vec,size) { \
+	for(SQInteger _n_ = 0; _n_ < ((SQInteger)size); _n_++) { \
+		vec[_n_].Null(); \
+	} \
+}
+
+#define MINPOWER2 4
+
+struct SQRefCounted
+{
+	SQUnsignedInteger _uiRef;
+	struct SQWeakRef *_weakref;
+	SQRefCounted() { _uiRef = 0; _weakref = NULL; }
+	virtual ~SQRefCounted();
+	SQWeakRef *GetWeakRef(SQObjectType type);
+	virtual void Release()=0;
+	
+};
+
+struct SQWeakRef : SQRefCounted
+{
+	void Release();
+	SQObject _obj;
+};
+
+#define _realval(o) (type((o)) != OT_WEAKREF?(SQObject)o:_weakref(o)->_obj)
+
+struct SQObjectPtr;
+
+#define __AddRef(type,unval) if(ISREFCOUNTED(type))	\
+		{ \
+			unval.pRefCounted->_uiRef++; \
+		}  
+
+#define __Release(type,unval) if(ISREFCOUNTED(type) && ((--unval.pRefCounted->_uiRef)==0))	\
+		{	\
+			unval.pRefCounted->Release();	\
+		}
+
+#define __ObjRelease(obj) { \
+	if((obj)) {	\
+		(obj)->_uiRef--; \
+		if((obj)->_uiRef == 0) \
+			(obj)->Release(); \
+		(obj) = NULL;	\
+	} \
+}
+
+#define __ObjAddRef(obj) { \
+	(obj)->_uiRef++; \
+}
+
+#define type(obj) ((obj)._type)
+#define is_delegable(t) (type(t)&SQOBJECT_DELEGABLE)
+#define raw_type(obj) _RAW_TYPE((obj)._type)
+
+#define _integer(obj) ((obj)._unVal.nInteger)
+#define _float(obj) ((obj)._unVal.fFloat)
+#define _string(obj) ((obj)._unVal.pString)
+#define _table(obj) ((obj)._unVal.pTable)
+#define _array(obj) ((obj)._unVal.pArray)
+#define _closure(obj) ((obj)._unVal.pClosure)
+#define _generator(obj) ((obj)._unVal.pGenerator)
+#define _nativeclosure(obj) ((obj)._unVal.pNativeClosure)
+#define _userdata(obj) ((obj)._unVal.pUserData)
+#define _userpointer(obj) ((obj)._unVal.pUserPointer)
+#define _thread(obj) ((obj)._unVal.pThread)
+#define _funcproto(obj) ((obj)._unVal.pFunctionProto)
+#define _class(obj) ((obj)._unVal.pClass)
+#define _instance(obj) ((obj)._unVal.pInstance)
+#define _delegable(obj) ((SQDelegable *)(obj)._unVal.pDelegable)
+#define _weakref(obj) ((obj)._unVal.pWeakRef)
+#define _outer(obj) ((obj)._unVal.pOuter)
+#define _refcounted(obj) ((obj)._unVal.pRefCounted)
+#define _rawval(obj) ((obj)._unVal.raw)
+
+#define _stringval(obj) (obj)._unVal.pString->_val
+#define _userdataval(obj) ((SQUserPointer)sq_aligning((obj)._unVal.pUserData + 1))
+
+#define tofloat(num) ((type(num)==OT_INTEGER)?(SQFloat)_integer(num):_float(num))
+#define tointeger(num) ((type(num)==OT_FLOAT)?(SQInteger)_float(num):_integer(num))
+/////////////////////////////////////////////////////////////////////////////////////
+/////////////////////////////////////////////////////////////////////////////////////
+#if defined(SQUSEDOUBLE) && !defined(_SQ64) || !defined(SQUSEDOUBLE) && defined(_SQ64)
+#define SQ_REFOBJECT_INIT()	SQ_OBJECT_RAWINIT()
+#else
+#define SQ_REFOBJECT_INIT()
+#endif
+
+#define _REF_TYPE_DECL(type,_class,sym) \
+	SQObjectPtr(_class * x) \
+	{ \
+		SQ_OBJECT_RAWINIT() \
+		_type=type; \
+		_unVal.sym = x; \
+		assert(_unVal.pTable); \
+		_unVal.pRefCounted->_uiRef++; \
+	} \
+	inline SQObjectPtr& operator=(_class *x) \
+	{  \
+		SQObjectType tOldType; \
+		SQObjectValue unOldVal; \
+		tOldType=_type; \
+		unOldVal=_unVal; \
+		_type = type; \
+		SQ_REFOBJECT_INIT() \
+		_unVal.sym = x; \
+		_unVal.pRefCounted->_uiRef++; \
+		__Release(tOldType,unOldVal); \
+		return *this; \
+	}
+
+#define _SCALAR_TYPE_DECL(type,_class,sym) \
+	SQObjectPtr(_class x) \
+	{ \
+		SQ_OBJECT_RAWINIT() \
+		_type=type; \
+		_unVal.sym = x; \
+	} \
+	inline SQObjectPtr& operator=(_class x) \
+	{  \
+		__Release(_type,_unVal); \
+		_type = type; \
+		SQ_OBJECT_RAWINIT() \
+		_unVal.sym = x; \
+		return *this; \
+	}
+struct SQObjectPtr : public SQObject
+{
+	SQObjectPtr()
+	{
+		SQ_OBJECT_RAWINIT()
+		_type=OT_NULL;
+		_unVal.pUserPointer=NULL;
+	}
+	SQObjectPtr(const SQObjectPtr &o)
+	{
+		_type = o._type;
+		_unVal = o._unVal;
+		__AddRef(_type,_unVal);
+	}
+	SQObjectPtr(const SQObject &o)
+	{
+		_type = o._type;
+		_unVal = o._unVal;
+		__AddRef(_type,_unVal);
+	}
+	_REF_TYPE_DECL(OT_TABLE,SQTable,pTable)
+	_REF_TYPE_DECL(OT_CLASS,SQClass,pClass)
+	_REF_TYPE_DECL(OT_INSTANCE,SQInstance,pInstance)
+	_REF_TYPE_DECL(OT_ARRAY,SQArray,pArray)
+	_REF_TYPE_DECL(OT_CLOSURE,SQClosure,pClosure)
+	_REF_TYPE_DECL(OT_NATIVECLOSURE,SQNativeClosure,pNativeClosure)
+	_REF_TYPE_DECL(OT_OUTER,SQOuter,pOuter)
+	_REF_TYPE_DECL(OT_GENERATOR,SQGenerator,pGenerator)
+	_REF_TYPE_DECL(OT_STRING,SQString,pString)
+	_REF_TYPE_DECL(OT_USERDATA,SQUserData,pUserData)
+	_REF_TYPE_DECL(OT_WEAKREF,SQWeakRef,pWeakRef)
+	_REF_TYPE_DECL(OT_THREAD,SQVM,pThread)
+	_REF_TYPE_DECL(OT_FUNCPROTO,SQFunctionProto,pFunctionProto)
+	
+	_SCALAR_TYPE_DECL(OT_INTEGER,SQInteger,nInteger)
+	_SCALAR_TYPE_DECL(OT_FLOAT,SQFloat,fFloat)
+	_SCALAR_TYPE_DECL(OT_USERPOINTER,SQUserPointer,pUserPointer)
+
+	SQObjectPtr(bool bBool)
+	{
+		SQ_OBJECT_RAWINIT()
+		_type = OT_BOOL;
+		_unVal.nInteger = bBool?1:0;
+	}
+	inline SQObjectPtr& operator=(bool b)
+	{ 
+		__Release(_type,_unVal);
+		SQ_OBJECT_RAWINIT()
+		_type = OT_BOOL;
+		_unVal.nInteger = b?1:0;
+		return *this;
+	}
+
+	~SQObjectPtr()
+	{
+		__Release(_type,_unVal);
+	}
+			
+	inline SQObjectPtr& operator=(const SQObjectPtr& obj)
+	{ 
+		SQObjectType tOldType;
+		SQObjectValue unOldVal;
+		tOldType=_type;
+		unOldVal=_unVal;
+		_unVal = obj._unVal;
+		_type = obj._type;
+		__AddRef(_type,_unVal);
+		__Release(tOldType,unOldVal);
+		return *this;
+	}
+	inline SQObjectPtr& operator=(const SQObject& obj)
+	{ 
+		SQObjectType tOldType;
+		SQObjectValue unOldVal;
+		tOldType=_type;
+		unOldVal=_unVal;
+		_unVal = obj._unVal;
+		_type = obj._type;
+		__AddRef(_type,_unVal);
+		__Release(tOldType,unOldVal);
+		return *this;
+	}
+	inline void Null()
+	{
+		SQObjectType tOldType = _type;
+		SQObjectValue unOldVal = _unVal;
+		_type = OT_NULL;
+		_unVal.raw = (SQRawObjectVal)NULL;
+		__Release(tOldType ,unOldVal);
+	}
+	private:
+		SQObjectPtr(const SQChar *){} //safety
+};
+
+
+inline void _Swap(SQObject &a,SQObject &b)
+{
+	SQObjectType tOldType = a._type;
+	SQObjectValue unOldVal = a._unVal;
+	a._type = b._type;
+	a._unVal = b._unVal;
+	b._type = tOldType;
+	b._unVal = unOldVal;
+}
+
+/////////////////////////////////////////////////////////////////////////////////////
+#ifndef NO_GARBAGE_COLLECTOR
+#define MARK_FLAG 0x80000000
+struct SQCollectable : public SQRefCounted {
+	SQCollectable *_next;
+	SQCollectable *_prev;
+	SQSharedState *_sharedstate;
+	virtual SQObjectType GetType()=0;
+	virtual void Release()=0;
+	virtual void Mark(SQCollectable **chain)=0;
+	void UnMark();
+	virtual void Finalize()=0;
+	static void AddToChain(SQCollectable **chain,SQCollectable *c);
+	static void RemoveFromChain(SQCollectable **chain,SQCollectable *c);
+};
+
+
+#define ADD_TO_CHAIN(chain,obj) AddToChain(chain,obj)
+#define REMOVE_FROM_CHAIN(chain,obj) {if(!(_uiRef&MARK_FLAG))RemoveFromChain(chain,obj);}
+#define CHAINABLE_OBJ SQCollectable
+#define INIT_CHAIN() {_next=NULL;_prev=NULL;_sharedstate=ss;}
+#else
+
+#define ADD_TO_CHAIN(chain,obj) ((void)0)
+#define REMOVE_FROM_CHAIN(chain,obj) ((void)0)
+#define CHAINABLE_OBJ SQRefCounted
+#define INIT_CHAIN() ((void)0)
+#endif
+
+struct SQDelegable : public CHAINABLE_OBJ {
+	bool SetDelegate(SQTable *m);
+	virtual bool GetMetaMethod(SQVM *v,SQMetaMethod mm,SQObjectPtr &res);
+	SQTable *_delegate;
+};
+
+SQUnsignedInteger TranslateIndex(const SQObjectPtr &idx);
+typedef sqvector<SQObjectPtr> SQObjectPtrVec;
+typedef sqvector<SQInteger> SQIntVec;
+const SQChar *GetTypeName(const SQObjectPtr &obj1);
+const SQChar *IdType2Name(SQObjectType type);
+
+
+
+#endif //_SQOBJECT_H_