2 see copyright notice in squirrel.h
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4 #include "sqpcheader.h"
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8 #include "sqclosure.h"
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10 SQClass::SQClass(SQSharedState *ss,SQClass *base)
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14 _metamethods.resize(MT_LAST); //size it to max size
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16 _defaultvalues.copy(base->_defaultvalues);
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17 _methods.copy(base->_methods);
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18 _metamethods.copy(base->_metamethods);
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21 _members = base?base->_members->Clone() : SQTable::Create(ss,0);
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22 __ObjAddRef(_members);
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25 ADD_TO_CHAIN(&_sharedstate->_gc_chain, this);
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28 void SQClass::Finalize() {
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29 _attributes = _null_;
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30 _defaultvalues.resize(0);
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32 _metamethods.resize(0);
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33 __ObjRelease(_members);
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35 __ObjRelease(_base);
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41 REMOVE_FROM_CHAIN(&_sharedstate->_gc_chain, this);
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45 bool SQClass::NewSlot(const SQObjectPtr &key,const SQObjectPtr &val)
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49 return false; //the class already has an instance so cannot be modified
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50 if(_members->Get(key,temp) && _isfield(temp)) //overrides the default value
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52 _defaultvalues[_member_idx(temp)].val = val;
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55 if(type(val) == OT_CLOSURE || type(val) == OT_NATIVECLOSURE) {
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57 if((mmidx = _sharedstate->GetMetaMethodIdxByName(key)) != -1) {
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58 _metamethods[mmidx] = val;
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61 if(type(temp) == OT_NULL) {
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64 _members->NewSlot(key,SQObjectPtr(_make_method_idx(_methods.size())));
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65 _methods.push_back(m);
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68 _methods[_member_idx(temp)].val = val;
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75 _members->NewSlot(key,SQObjectPtr(_make_field_idx(_defaultvalues.size())));
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76 _defaultvalues.push_back(m);
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80 SQInstance *SQClass::CreateInstance()
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82 if(!_locked) Lock();
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83 return SQInstance::Create(_opt_ss(this),this);
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86 SQInteger SQClass::Next(const SQObjectPtr &refpos, SQObjectPtr &outkey, SQObjectPtr &outval)
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89 SQInteger idx = _members->Next(false,refpos,outkey,oval);
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91 if(_ismethod(oval)) {
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92 outval = _methods[_member_idx(oval)].val;
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95 SQObjectPtr &o = _defaultvalues[_member_idx(oval)].val;
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96 outval = _realval(o);
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102 bool SQClass::SetAttributes(const SQObjectPtr &key,const SQObjectPtr &val)
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105 if(_members->Get(key,idx)) {
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107 _defaultvalues[_member_idx(idx)].attrs = val;
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109 _methods[_member_idx(idx)].attrs = val;
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115 bool SQClass::GetAttributes(const SQObjectPtr &key,SQObjectPtr &outval)
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118 if(_members->Get(key,idx)) {
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119 outval = (_isfield(idx)?_defaultvalues[_member_idx(idx)].attrs:_methods[_member_idx(idx)].attrs);
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125 ///////////////////////////////////////////////////////////////////////
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126 void SQInstance::Init(SQSharedState *ss)
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128 _userpointer = NULL;
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130 __ObjAddRef(_class);
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131 _delegate = _class->_members;
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133 ADD_TO_CHAIN(&_sharedstate->_gc_chain, this);
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136 SQInstance::SQInstance(SQSharedState *ss, SQClass *c, SQInteger memsize)
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138 _memsize = memsize;
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140 _nvalues = _class->_defaultvalues.size();
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141 for(SQUnsignedInteger n = 0; n < _nvalues; n++) {
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142 new (&_values[n]) SQObjectPtr(_class->_defaultvalues[n].val);
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147 SQInstance::SQInstance(SQSharedState *ss, SQInstance *i, SQInteger memsize)
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149 _memsize = memsize;
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150 _class = i->_class;
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151 _nvalues = _class->_defaultvalues.size();
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152 for(SQUnsignedInteger n = 0; n < _nvalues; n++) {
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153 new (&_values[n]) SQObjectPtr(i->_values[n]);
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158 void SQInstance::Finalize()
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160 __ObjRelease(_class);
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161 for(SQUnsignedInteger i = 0; i < _nvalues; i++) {
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162 _values[i] = _null_;
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166 SQInstance::~SQInstance()
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168 REMOVE_FROM_CHAIN(&_sharedstate->_gc_chain, this);
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172 bool SQInstance::GetMetaMethod(SQMetaMethod mm,SQObjectPtr &res)
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174 if(type(_class->_metamethods[mm]) != OT_NULL) {
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175 res = _class->_metamethods[mm];
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181 bool SQInstance::InstanceOf(SQClass *trg)
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183 SQClass *parent = _class;
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184 while(parent != NULL) {
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187 parent = parent->_base;
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