src/DataTypeReader.h
author František Kučera <franta-hg@frantovo.cz>
Mon, 03 Sep 2018 23:40:12 +0200
branchv_0
changeset 18 e11f1ad20826
parent 15 09ca53671b28
child 29 755978b0935c
permissions -rw-r--r--
read using std::function

#pragma once

#include <sstream>
#include <functional>

#include "DataTypeReaderBase.h"

namespace relpipe {
namespace reader {

template<typename T> class DataTypeReader : public DataTypeReaderBase {
public:

	DataTypeReader(const TypeId typeId, const string_t typeCode) : DataTypeReaderBase(typeId, typeCode) {
	}

	virtual ~DataTypeReader() {
	};

	virtual T readValue(std::istream& input) = 0;

	virtual string_t readString(std::istream &input) {
		return toString(readValue(input));
	}

	virtual void read(std::istream &input, std::function<void(const void *, const std::type_info&) > handler) override {
		T value = readValue(input);
		handler(&value, typeid (T));
	}

	virtual void read(std::istream &input, std::function<void(const string_t&, const void *, const std::type_info&) > handler) override {
		T value = readValue(input);
		handler(toString(value), &value, typeid (T));
	}

	virtual string_t toString(const T& value) = 0;

};

}
}