ObjectInfoPtr ConfigObjectLoader::getObjectInfo( expr_cref expr, str_cref name ) const
{
if( !name.empty() )
{
ObjectInfoPtr obj;
// already found.
if( Utility::mapLookup( m_objects, name, obj ) )
{
return obj;
}
}
if( expr.type() == EObject ) // it's an object expression
{
std::string className = expr.value();
ClassInfoPtr classInfo = getClassInfo( className );
BuilderPtr builder = classInfo->createBuilder( name, expr );
ObjectInfoPtr obj( new ObjectInfo( name, expr, *classInfo, builder ) );
// It needs to be in the map before we bind its parameters so a circular reference can be detected
m_objects[name] = obj;
builder->bindParams( *this );
return obj;
}
else if( expr.type() == EVariable )
{
// this could recurse indefinitely with circular reference..
// NOTE: if anything throws here, let ParamBinderBase manage the context of the error.
std::string objName;
expr_cref expr2 = underlying( expr, &objName );
return getObjectInfo( expr2, objName );
}
else // this isn't a class. It might be a map or list or whatever but isn't an object
{
std::ostringstream oss;
oss << expr.value() << " is not an object";
// Do not throw TypeError here. If it isn't an object it can't be a proxy either
throw std::invalid_argument( oss.str() );
}
}
