92c59963f8
git-svn-id: http://mc-server.googlecode.com/svn/trunk@606 0a769ca7-a7f5-676a-18bf-c427514a06d6
355 lines
8.7 KiB
C++
355 lines
8.7 KiB
C++
/* see copyright notice in squirrel.h */
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#ifndef _SQOBJECT_H_
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#define _SQOBJECT_H_
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#include "squtils.h"
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#ifdef _SQ64
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#define UINT_MINUS_ONE (0xFFFFFFFFFFFFFFFF)
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#else
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#define UINT_MINUS_ONE (0xFFFFFFFF)
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#endif
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#define SQ_CLOSURESTREAM_HEAD (('S'<<24)|('Q'<<16)|('I'<<8)|('R'))
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#define SQ_CLOSURESTREAM_PART (('P'<<24)|('A'<<16)|('R'<<8)|('T'))
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#define SQ_CLOSURESTREAM_TAIL (('T'<<24)|('A'<<16)|('I'<<8)|('L'))
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struct SQSharedState;
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enum SQMetaMethod{
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MT_ADD=0,
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MT_SUB=1,
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MT_MUL=2,
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MT_DIV=3,
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MT_UNM=4,
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MT_MODULO=5,
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MT_SET=6,
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MT_GET=7,
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MT_TYPEOF=8,
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MT_NEXTI=9,
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MT_CMP=10,
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MT_CALL=11,
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MT_CLONED=12,
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MT_NEWSLOT=13,
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MT_DELSLOT=14,
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MT_TOSTRING=15,
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MT_NEWMEMBER=16,
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MT_INHERITED=17,
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MT_LAST = 18
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};
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#define MM_ADD _SC("_add")
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#define MM_SUB _SC("_sub")
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#define MM_MUL _SC("_mul")
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#define MM_DIV _SC("_div")
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#define MM_UNM _SC("_unm")
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#define MM_MODULO _SC("_modulo")
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#define MM_SET _SC("_set")
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#define MM_GET _SC("_get")
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#define MM_TYPEOF _SC("_typeof")
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#define MM_NEXTI _SC("_nexti")
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#define MM_CMP _SC("_cmp")
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#define MM_CALL _SC("_call")
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#define MM_CLONED _SC("_cloned")
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#define MM_NEWSLOT _SC("_newslot")
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#define MM_DELSLOT _SC("_delslot")
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#define MM_TOSTRING _SC("_tostring")
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#define MM_NEWMEMBER _SC("_newmember")
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#define MM_INHERITED _SC("_inherited")
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#define _CONSTRUCT_VECTOR(type,size,ptr) { \
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for(SQInteger n = 0; n < ((SQInteger)size); n++) { \
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new (&ptr[n]) type(); \
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} \
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}
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#define _DESTRUCT_VECTOR(type,size,ptr) { \
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for(SQInteger nl = 0; nl < ((SQInteger)size); nl++) { \
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ptr[nl].~type(); \
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} \
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}
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#define _COPY_VECTOR(dest,src,size) { \
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for(SQInteger _n_ = 0; _n_ < ((SQInteger)size); _n_++) { \
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dest[_n_] = src[_n_]; \
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} \
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}
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#define _NULL_SQOBJECT_VECTOR(vec,size) { \
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for(SQInteger _n_ = 0; _n_ < ((SQInteger)size); _n_++) { \
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vec[_n_].Null(); \
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} \
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}
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#define MINPOWER2 4
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struct SQRefCounted
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{
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SQUnsignedInteger _uiRef;
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struct SQWeakRef *_weakref;
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SQRefCounted() { _uiRef = 0; _weakref = NULL; }
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virtual ~SQRefCounted();
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SQWeakRef *GetWeakRef(SQObjectType type);
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virtual void Release()=0;
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};
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struct SQWeakRef : SQRefCounted
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{
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void Release();
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SQObject _obj;
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};
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#define _realval(o) (type((o)) != OT_WEAKREF?(SQObject)o:_weakref(o)->_obj)
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struct SQObjectPtr;
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#define __AddRef(type,unval) if(ISREFCOUNTED(type)) \
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{ \
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unval.pRefCounted->_uiRef++; \
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}
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#define __Release(type,unval) if(ISREFCOUNTED(type) && ((--unval.pRefCounted->_uiRef)==0)) \
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{ \
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unval.pRefCounted->Release(); \
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}
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#define __ObjRelease(obj) { \
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if((obj)) { \
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(obj)->_uiRef--; \
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if((obj)->_uiRef == 0) \
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(obj)->Release(); \
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(obj) = NULL; \
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} \
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}
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#define __ObjAddRef(obj) { \
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(obj)->_uiRef++; \
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}
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#define type(obj) ((obj)._type)
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#define is_delegable(t) (type(t)&SQOBJECT_DELEGABLE)
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#define raw_type(obj) _RAW_TYPE((obj)._type)
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#define _integer(obj) ((obj)._unVal.nInteger)
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#define _float(obj) ((obj)._unVal.fFloat)
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#define _string(obj) ((obj)._unVal.pString)
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#define _table(obj) ((obj)._unVal.pTable)
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#define _array(obj) ((obj)._unVal.pArray)
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#define _closure(obj) ((obj)._unVal.pClosure)
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#define _generator(obj) ((obj)._unVal.pGenerator)
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#define _nativeclosure(obj) ((obj)._unVal.pNativeClosure)
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#define _userdata(obj) ((obj)._unVal.pUserData)
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#define _userpointer(obj) ((obj)._unVal.pUserPointer)
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#define _thread(obj) ((obj)._unVal.pThread)
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#define _funcproto(obj) ((obj)._unVal.pFunctionProto)
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#define _class(obj) ((obj)._unVal.pClass)
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#define _instance(obj) ((obj)._unVal.pInstance)
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#define _delegable(obj) ((SQDelegable *)(obj)._unVal.pDelegable)
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#define _weakref(obj) ((obj)._unVal.pWeakRef)
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#define _outer(obj) ((obj)._unVal.pOuter)
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#define _refcounted(obj) ((obj)._unVal.pRefCounted)
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#define _rawval(obj) ((obj)._unVal.raw)
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#define _stringval(obj) (obj)._unVal.pString->_val
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#define _userdataval(obj) ((SQUserPointer)sq_aligning((obj)._unVal.pUserData + 1))
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#define tofloat(num) ((type(num)==OT_INTEGER)?(SQFloat)_integer(num):_float(num))
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#define tointeger(num) ((type(num)==OT_FLOAT)?(SQInteger)_float(num):_integer(num))
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/////////////////////////////////////////////////////////////////////////////////////
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/////////////////////////////////////////////////////////////////////////////////////
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#if defined(SQUSEDOUBLE) && !defined(_SQ64) || !defined(SQUSEDOUBLE) && defined(_SQ64)
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#define SQ_REFOBJECT_INIT() SQ_OBJECT_RAWINIT()
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#else
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#define SQ_REFOBJECT_INIT()
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#endif
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#define _REF_TYPE_DECL(type,_class,sym) \
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SQObjectPtr(_class * x) \
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{ \
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SQ_OBJECT_RAWINIT() \
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_type=type; \
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_unVal.sym = x; \
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assert(_unVal.pTable); \
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_unVal.pRefCounted->_uiRef++; \
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} \
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inline SQObjectPtr& operator=(_class *x) \
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{ \
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SQObjectType tOldType; \
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SQObjectValue unOldVal; \
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tOldType=_type; \
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unOldVal=_unVal; \
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_type = type; \
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SQ_REFOBJECT_INIT() \
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_unVal.sym = x; \
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_unVal.pRefCounted->_uiRef++; \
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__Release(tOldType,unOldVal); \
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return *this; \
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}
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#define _SCALAR_TYPE_DECL(type,_class,sym) \
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SQObjectPtr(_class x) \
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{ \
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SQ_OBJECT_RAWINIT() \
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_type=type; \
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_unVal.sym = x; \
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} \
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inline SQObjectPtr& operator=(_class x) \
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{ \
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__Release(_type,_unVal); \
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_type = type; \
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SQ_OBJECT_RAWINIT() \
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_unVal.sym = x; \
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return *this; \
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}
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struct SQObjectPtr : public SQObject
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{
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SQObjectPtr()
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{
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SQ_OBJECT_RAWINIT()
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_type=OT_NULL;
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_unVal.pUserPointer=NULL;
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}
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SQObjectPtr(const SQObjectPtr &o)
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{
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//SQ_OBJECT_RAWINIT()
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_type=o._type;
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_unVal=o._unVal;
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__AddRef(_type,_unVal);
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}
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SQObjectPtr(const SQObject &o)
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{
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//SQ_OBJECT_RAWINIT()
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_type=o._type;
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_unVal=o._unVal;
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__AddRef(_type,_unVal);
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}
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_REF_TYPE_DECL(OT_TABLE,SQTable,pTable)
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_REF_TYPE_DECL(OT_CLASS,SQClass,pClass)
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_REF_TYPE_DECL(OT_INSTANCE,SQInstance,pInstance)
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_REF_TYPE_DECL(OT_ARRAY,SQArray,pArray)
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_REF_TYPE_DECL(OT_CLOSURE,SQClosure,pClosure)
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_REF_TYPE_DECL(OT_NATIVECLOSURE,SQNativeClosure,pNativeClosure)
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_REF_TYPE_DECL(OT_OUTER,SQOuter,pOuter)
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_REF_TYPE_DECL(OT_GENERATOR,SQGenerator,pGenerator)
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_REF_TYPE_DECL(OT_STRING,SQString,pString)
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_REF_TYPE_DECL(OT_USERDATA,SQUserData,pUserData)
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_REF_TYPE_DECL(OT_WEAKREF,SQWeakRef,pWeakRef)
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_REF_TYPE_DECL(OT_THREAD,SQVM,pThread)
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_REF_TYPE_DECL(OT_FUNCPROTO,SQFunctionProto,pFunctionProto)
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_SCALAR_TYPE_DECL(OT_INTEGER,SQInteger,nInteger)
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_SCALAR_TYPE_DECL(OT_FLOAT,SQFloat,fFloat)
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_SCALAR_TYPE_DECL(OT_USERPOINTER,SQUserPointer,pUserPointer)
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SQObjectPtr(bool bBool)
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{
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SQ_OBJECT_RAWINIT()
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_type = OT_BOOL;
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_unVal.nInteger = bBool?1:0;
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}
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inline SQObjectPtr& operator=(bool b)
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{
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__Release(_type,_unVal);
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SQ_OBJECT_RAWINIT()
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_type = OT_BOOL;
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_unVal.nInteger = b?1:0;
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return *this;
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}
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~SQObjectPtr()
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{
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__Release(_type,_unVal);
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}
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inline SQObjectPtr& operator=(const SQObjectPtr& obj)
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{
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SQObjectType tOldType;
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SQObjectValue unOldVal;
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tOldType=_type;
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unOldVal=_unVal;
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_unVal = obj._unVal;
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_type = obj._type;
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__AddRef(_type,_unVal);
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__Release(tOldType,unOldVal);
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return *this;
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}
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inline SQObjectPtr& operator=(const SQObject& obj)
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{
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SQObjectType tOldType;
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SQObjectValue unOldVal;
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tOldType=_type;
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unOldVal=_unVal;
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_unVal = obj._unVal;
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_type = obj._type;
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__AddRef(_type,_unVal);
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__Release(tOldType,unOldVal);
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return *this;
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}
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inline void Null()
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{
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__Release(_type ,_unVal);
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_type = OT_NULL;
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_unVal.raw = NULL;
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}
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private:
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SQObjectPtr(const SQChar *){} //safety
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};
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inline void _Swap(SQObject &a,SQObject &b)
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{
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SQObjectType tOldType = a._type;
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SQObjectValue unOldVal = a._unVal;
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a._type = b._type;
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a._unVal = b._unVal;
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b._type = tOldType;
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b._unVal = unOldVal;
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}
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/////////////////////////////////////////////////////////////////////////////////////
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#ifndef NO_GARBAGE_COLLECTOR
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#define MARK_FLAG 0x80000000
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struct SQCollectable : public SQRefCounted {
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SQCollectable *_next;
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SQCollectable *_prev;
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SQSharedState *_sharedstate;
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virtual SQObjectType GetType()=0;
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virtual void Release()=0;
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virtual void Mark(SQCollectable **chain)=0;
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void UnMark();
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virtual void Finalize()=0;
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static void AddToChain(SQCollectable **chain,SQCollectable *c);
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static void RemoveFromChain(SQCollectable **chain,SQCollectable *c);
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};
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#define ADD_TO_CHAIN(chain,obj) AddToChain(chain,obj)
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#define REMOVE_FROM_CHAIN(chain,obj) {if(!(_uiRef&MARK_FLAG))RemoveFromChain(chain,obj);}
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#define CHAINABLE_OBJ SQCollectable
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#define INIT_CHAIN() {_next=NULL;_prev=NULL;_sharedstate=ss;}
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#else
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#define ADD_TO_CHAIN(chain,obj) ((void)0)
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#define REMOVE_FROM_CHAIN(chain,obj) ((void)0)
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#define CHAINABLE_OBJ SQRefCounted
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#define INIT_CHAIN() ((void)0)
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#endif
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struct SQDelegable : public CHAINABLE_OBJ {
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bool SetDelegate(SQTable *m);
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virtual bool GetMetaMethod(SQVM *v,SQMetaMethod mm,SQObjectPtr &res);
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SQTable *_delegate;
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};
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SQUnsignedInteger TranslateIndex(const SQObjectPtr &idx);
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typedef sqvector<SQObjectPtr> SQObjectPtrVec;
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typedef sqvector<SQInteger> SQIntVec;
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const SQChar *GetTypeName(const SQObjectPtr &obj1);
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const SQChar *IdType2Name(SQObjectType type);
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#endif //_SQOBJECT_H_
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