reader.h

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#ifndef TUE_CONFIG_READER_H_
#define TUE_CONFIG_READER_H_
 
#include "tue/config/types.h"
#include "tue/config/data.h"
 
 
namespace tue
{
 
namespace config
{
 
class Data;
 
class Reader
{
 
public:
 
    Reader(const DataConstPointer& ptr);
 
    virtual ~Reader();
 
    template<typename T>
    bool value(const std::string& name, T& value, const RequiredOrOptional /*opt*/ = REQUIRED) const
    {
        Label label;
        if (!cfg_->getLabel(name, label))
            return false;
 
        Variant v;
        if (!cfg_->nodes[idx_]->value(label, v))
            return false;
 
        if (!v.getValue(value))
            return false;
 
        return true;
    }
 
    bool readArray(const std::string& name, const RequiredOrOptional opt = OPTIONAL) { return read(name, ARRAY, opt); }
 
    bool readGroup(const std::string& name, const RequiredOrOptional opt = OPTIONAL) { return read(name, MAP, opt); }
 
    bool endArray() { return end(); }
 
    bool endGroup() { return end(); }
 
    bool nextArrayItem() { return next(); }
 
    bool hasArray(const std::string& name) { return hasChild(name, ARRAY); }
 
    bool hasGroup(const std::string& name) { return hasChild(name, MAP); }
 
    inline DataConstPointer data() const { return DataConstPointer(cfg_, idx_); }
 
private:
 
    bool read(const std::string& name, const NodeType type, const RequiredOrOptional opt = OPTIONAL);
 
    bool end();
 
    bool next();
 
    bool hasChild(const std::string& name, NodeType type) const;
 
    NodeIdx idx_; // Current node index
 
    boost::shared_ptr<const Data> cfg_; // Data pointer
 
};
 
} // end namespace config
 
} // end namespace tue
 
#endif