exercise12_27.h

#ifndef EX12_27_H
#define EX12_27_H

#include <fstream>
#include <memory>
#include <vector>
#include <string>
#include <map>
#include <set>

class QueryResult;

class TextQuery
{
public:
	using line_no = std::vector<std::string>::size_type;
	TextQuery(std::ifstream&);
	QueryResult query(const std::string& s) const;

private:
	std::shared_ptr<std::vector<std::string>> file;
	std::map<std::string, std::shared_ptr<std::set<line_no>>> wm;
};

class QueryResult
{
public:
	friend std::ostream& print(std::ostream&, const QueryResult&);
	QueryResult(std::string s,
				std::shared_ptr<std::set<TextQuery::line_no>> p,
				std::shared_ptr<std::vector<std::string>> f) :
		sought(s), lines(p), file(f) 
	{}

private:
	std::string sought;
	std::shared_ptr<std::set<TextQuery::line_no>> lines;
	std::shared_ptr<std::vector<std::string>> file;
};

std::ostream& print(std::ostream&, const QueryResult&);

#endif