static void scStringSlice(const CFunctionsScopePtr &c, void *userdata) {
string str = c->getArgument("this")->getString();
int length = c->getArgumentsLength()-((int)userdata & 1);
bool slice = ((int)userdata & 2) == 0;
int start = c->getArgument("start")->getInt();
int end = (int)str.size();
if(slice && start<0) start = str.size()+start;
if(length>1) {
end = c->getArgument("end")->getInt();
if(slice && end<0) end = str.size()+end;
}
if(!slice && end < start) { end^=start; start^=end; end^=start; }
if(start<0) start = 0;
if(start>=(int)str.size())
c->setReturnVar(c->newScriptVar(""));
else if(end <= start)
c->setReturnVar(c->newScriptVar(""));
else
c->setReturnVar(c->newScriptVar(str.substr(start, end-start)));
}
static void scTrace(const CFunctionsScopePtr &c, void * userdata) {
CTinyJS *js = (CTinyJS*)userdata;
if(c->getArgumentsLength())
c->getArgument(0)->trace();
else
js->getRoot()->trace("root");
}
static void scStringConcat(const CFunctionsScopePtr &c, void *userdata) {
int length = c->getArgumentsLength();
string str = this2string(c);
for(int32_t i=ptr2int32(userdata); i<length; i++)
str.append(c->getArgument(i)->toString());
c->setReturnVar(c->newScriptVar(str));
}
static void scStringConcat(const CFunctionsScopePtr &c, void *userdata) {
int length = c->getArgumentsLength();
string str = c->getArgument("this")->getString();
for(int i=(int)userdata; i<length; i++)
str.append(c->getArgument(i)->getString());
c->setReturnVar(c->newScriptVar(str));
}
static void scArrayPush(const CFunctionsScopePtr &c, void *data) {
CScriptVarPtr arr = c->getArgument("this");
int l = arr->getArrayLength();
int args = c->getArgumentsLength();
for (int i=0;i<args;i++)
arr->setArrayIndex(l+i, c->getArgument(i));
}
static void scArraySort(const CFunctionsScopePtr &c, void *data) {
CScriptVarPtr arr = c->getArgument("this");
CScriptVarFunctionPtr cmp_fnc;
uint32_t len = arr->getLength();
if(len > 1) {
int args = c->getArgumentsLength();
if(args) {
cmp_fnc = c->getArgument(0);
if(!cmp_fnc) c->throwError(TypeError, "invalid Array.prototype.sort argument");
}
SCRIPTVAR_CHILDS_it begin = lower_bound(arr->Childs.begin(), arr->Childs.end(), "0");
/* in ECMAScript the sort algorithm is not specified
* in some cases sort throws a TypeError e.G. an array element is read-only, non-configurable, getter or setter
* this will result in a partially sorted array
* in worst case the sort algorithm results in an endless loop (more getters with constant return value)
*
* 42TinyJS checks before sort if an element read-only, setter or getter and throws immediately a TypeError
*/
for(SCRIPTVAR_CHILDS_it it = begin; it != arr->Childs.end(); ++it) {
if(!(*it)->isWritable()) c->throwError(TypeError, "property "+(*it)->getName()+" is read-only");
if(!(*it)->isConfigurable()) c->throwError(TypeError, "property "+(*it)->getName()+" is non-configurable");
if(!(*it)->getVarPtr()->isAccessor()) c->throwError(TypeError, "property "+(*it)->getName()+" is a getter and/or a setter");
}
sort(begin, arr->Childs.end(), ::cmp_fnc(c, cmp_fnc));
uint32_t idx = 0;
for(SCRIPTVAR_CHILDS_it it=begin; it != arr->Childs.end(); ++it, ++idx)
(*it)->reName(int2string(idx));
sort(begin, arr->Childs.end(), cmp_by_name);
}
c->setReturnVar(arr);
}
static void scArrayPush(const CFunctionsScopePtr &c, void *data) {
CScriptVarPtr arr = c->getArgument("this");
uint32_t len = c->getLength(arr);
uint32_t args = c->getArgumentsLength();
for (uint32_t i=0; i<args; ++i)
c->setProperty(arr, i, c->getArgument(i));
}
static void scStringSubstr(const CFunctionsScopePtr &c, void *userdata) {
string str = this2string(c);
int32_t length = c->getArgumentsLength()-ptr2int32(userdata);
int32_t start = c->getArgument("start")->toNumber().toInt32();
if(start<0 || start>=(int)str.size())
c->setReturnVar(c->newScriptVar(""));
else if(length>1) {
int length = c->getArgument("length")->toNumber().toInt32();
c->setReturnVar(c->newScriptVar(str.substr(start, length)));
} else
c->setReturnVar(c->newScriptVar(str.substr(start)));
}
static void scStringSubstr(const CFunctionsScopePtr &c, void *userdata) {
string str = c->getArgument("this")->getString();
int length = c->getArgumentsLength()-(int)userdata;
int start = c->getArgument("start")->getInt();
if(start<0 || start>=(int)str.size())
c->setReturnVar(c->newScriptVar(""));
else if(length>1) {
int length = c->getArgument("length")->getInt();
c->setReturnVar(c->newScriptVar(str.substr(start, length)));
} else
c->setReturnVar(c->newScriptVar(str.substr(start)));
}
static void scStringSlice(const CFunctionsScopePtr &c, void *userdata) {
string str = this2string(c);
int32_t length = c->getArgumentsLength()-(ptr2int32(userdata) & 1);
bool slice = (ptr2int32(userdata) & 2) == 0;
int32_t start = c->getArgument("start")->toNumber().toInt32();
int32_t end = (int32_t)str.size();
if(slice && start<0) start = (int32_t)(str.size())+start;
if(length>1) {
end = c->getArgument("end")->toNumber().toInt32();
if(slice && end<0) end = (int32_t)(str.size())+end;
}
if(!slice && end < start) { end^=start; start^=end; end^=start; }
if(start<0) start = 0;
if(start>=(int)str.size())
c->setReturnVar(c->newScriptVar(""));
else if(end <= start)
c->setReturnVar(c->newScriptVar(""));
else
c->setReturnVar(c->newScriptVar(str.substr(start, end-start)));
}