bool
FreezeScript::TransformVisitor::checkClasses(const Slice::ClassDeclPtr& dest, const Slice::ClassDeclPtr& src)
{
//
// Here are the rules for verifying class compatibility:
//
// 1. If the type ids are the same, assume they are compatible.
// 2. If the source type has been renamed, then check its equivalent new definition for compatibility.
// 3. Otherwise, the types are only compatible if they are defined in the same Slice unit, and if the
// destination type is a base type of the source type.
//
string s1 = dest->scoped();
string s2 = src->scoped();
if(s1 == s2)
{
return true;
}
else
{
Slice::TypePtr t = _info->getRenamedType(src);
Slice::ClassDeclPtr s = Slice::ClassDeclPtr::dynamicCast(t);
if(s)
{
return checkClasses(dest, s);
}
if(dest->unit().get() != src->unit().get())
{
Slice::TypeList l = dest->unit()->lookupTypeNoBuiltin(s2, false);
if(l.empty())
{
_info->getErrorReporter()->error("class " + s2 + " not found in new Slice definitions");
}
s = Slice::ClassDeclPtr::dynamicCast(l.front());
}
else
{
s = src;
}
if(s)
{
Slice::ClassDefPtr def = s->definition();
if(!def)
{
_info->getErrorReporter()->error("class " + s2 + " declared but not defined");
}
return def->isA(s1);
}
}
return false;
}
bool
FreezeScript::AssignVisitor::checkClasses(const Slice::ClassDeclPtr& dest, const Slice::ClassDeclPtr& src)
{
string s1 = dest->scoped();
string s2 = src->scoped();
if(s1 == s2)
{
return true;
}
else
{
Slice::ClassDefPtr def = src->definition();
if(!def)
{
error("class " + s2 + " declared but not defined");
}
return def->isA(s1);
}
return false;
}
bool
FreezeScript::invokeMemberFunction(const string& name, const DataPtr& target, const DataList& args, DataPtr& result,
const DataFactoryPtr& factory, const ErrorReporterPtr& errorReporter)
{
//
// string
//
StringDataPtr targetStr = StringDataPtr::dynamicCast(target);
if(targetStr)
{
if(name == "find")
{
StringDataPtr argData;
IntegerDataPtr startData;
if(args.size() > 0)
{
argData = StringDataPtr::dynamicCast(args[0]);
}
if(args.size() > 1)
{
startData = IntegerDataPtr::dynamicCast(args[1]);
}
if(args.size() == 0 || args.size() > 2 || !argData || (args.size() == 2 && !startData))
{
errorReporter->error("invalid arguments to find(string str[, int len])");
}
string targ = targetStr->stringValue();
string arg = argData->stringValue();
string::size_type pos;
if(startData)
{
string::size_type start = static_cast<string::size_type>(startData->integerValue());
pos = targ.find(arg, start);
}
else
{
pos = targ.find(arg);
}
result = factory->createInteger(pos == string::npos ? -1 : static_cast<Ice::Long>(pos), false);
return true;
}
else if(name == "substr")
{
IntegerDataPtr startData;
IntegerDataPtr lenData;
if(args.size() > 0)
{
startData = IntegerDataPtr::dynamicCast(args[0]);
}
if(args.size() > 1)
{
lenData = IntegerDataPtr::dynamicCast(args[1]);
}
if(args.size() == 0 || args.size() > 2 || !startData || (args.size() == 2 && !lenData))
{
errorReporter->error("invalid arguments to substr(int start[, int len])");
}
string targ = targetStr->stringValue();
string::size_type start = static_cast<string::size_type>(startData->integerValue());
string::size_type len = string::npos;
if(lenData)
{
len = static_cast<string::size_type>(lenData->integerValue());
}
if(start > targ.size())
{
ostringstream ostr;
ostr << "substr() starting position (" << start << ") is greater than string length ("
<< targ.size() << ")";
errorReporter->error(ostr.str());
}
result = factory->createString(targ.substr(start, len), false);
return true;
}
else if(name == "replace")
{
IntegerDataPtr startData;
IntegerDataPtr lenData;
StringDataPtr strData;
if(args.size() == 3)
{
startData = IntegerDataPtr::dynamicCast(args[0]);
lenData = IntegerDataPtr::dynamicCast(args[1]);
strData = StringDataPtr::dynamicCast(args[2]);
}
if(args.size() != 3 || !startData || !lenData || !strData)
{
errorReporter->error("invalid arguments to replace(int start, int len, string val)");
}
string targ = targetStr->stringValue();
string::size_type start = static_cast<string::size_type>(startData->integerValue());
string::size_type len = static_cast<string::size_type>(lenData->integerValue());
string str = strData->stringValue();
if(start > targ.size())
{
ostringstream ostr;
ostr << "replace() starting position (" << start << ") is greater than string length ("
<< targ.size() << ")";
errorReporter->error(ostr.str());
}
result = factory->createString(targ.replace(start, len, str), false);
return true;
}
return false;
}
//
// Object
//
ObjectRefPtr targetObj = ObjectRefPtr::dynamicCast(target);
if(targetObj)
{
if(name == "ice_isA")
{
ObjectDataPtr value = targetObj->getValue();
if(!value)
{
errorReporter->error("ice_isA() invoked on nil object");
}
StringDataPtr str;
if(args.size() > 0)
{
str = StringDataPtr::dynamicCast(args.front());
}
if(args.size() != 1 || !str)
{
errorReporter->error("invalid arguments to ice_isA(string id)");
}
string id = str->stringValue();
if(id == "::Ice::Object")
{
result = factory->createBoolean(true, false);
return true;
}
Slice::ClassDeclPtr decl = Slice::ClassDeclPtr::dynamicCast(value->getType());
if(!decl)
{
//
// Ice::Object
//
result = factory->createBoolean(false, false);
return true;
}
Slice::ClassDefPtr def = decl->definition();
assert(def);
result = factory->createBoolean(def->isA(id), false);
return true;
}
return false;
}
return false;
}