SymbolMap.hh

#ifndef avro_SymbolMap_hh__
#define avro_SymbolMap_hh__

#include <map>
#include <boost/noncopyable.hpp>

#include "Node.hh"
#include "Schema.hh"

namespace avro {


class SymbolMap : private boost::noncopyable
{

  public:

    SymbolMap()
    {}

    bool registerSymbol(const NodePtr &node) {

        if(node->type() == AVRO_SYMBOLIC) {
            throw Exception("Node must not be a symbolic name");
        }
        const std::string name = node->name();
        if(name.empty()) {
            throw Exception("Node must have a name to be registered");
        }
        bool added = false;
        MapImpl::iterator lb = map_.lower_bound(name);

        if(lb == map_.end() || map_.key_comp()(name, lb->first)) {
            map_.insert(lb, std::make_pair(name, node));
            added = true; 
        }
        return added;
    }

    bool hasSymbol(const std::string &name) const {
        return map_.find(name) != map_.end();
    }

    NodePtr locateSymbol(const std::string &name) const {
        MapImpl::const_iterator iter = map_.find(name);
        return (iter == map_.end()) ? NodePtr() : iter->second;
    }

  private:

    typedef std::map<std::string, NodePtr> MapImpl;

    MapImpl map_;
};


} // namespace avro

#endif