/*=============================================================================
# Filename: QueryParser.h
# Author: Jiaqi, Chen
# Mail: chenjiaqi93@163.com
# Last Modified: 2017-03-13
# Description:
=============================================================================*/

#ifndef QUERYPARSER_H_
#define QUERYPARSER_H_

#include "../Util/Util.h"
#include "../Query/QueryTree.h"
#include "SparqlParser.h"
#include "SparqlLexer.h"

class QueryParser
{
	public:
		void SPARQLParse(const std::string &query, QueryTree &querytree);

	private:
		std::map<std::string, std::string> prefix_map;

		int printNode(pANTLR3_BASE_TREE node, int dep = 0);

		void parseWorkload(pANTLR3_BASE_TREE node, QueryTree &querytree);

		void parseQuery(pANTLR3_BASE_TREE node, QueryTree &querytree);
		void parsePrologue(pANTLR3_BASE_TREE node);
		void parsePrefix(pANTLR3_BASE_TREE node);
		void replacePrefix(std::string &str);
		void parseSelectClause(pANTLR3_BASE_TREE node, QueryTree &querytree);
		void parseSelectVar(pANTLR3_BASE_TREE node, QueryTree &querytree);
		void parseSelectAggregateFunction(pANTLR3_BASE_TREE node, QueryTree &querytree);
		void parseGroupPattern(pANTLR3_BASE_TREE node, QueryTree::GroupPattern &grouppattern);
		void parsePattern(pANTLR3_BASE_TREE node, QueryTree::GroupPattern &grouppattern);
		void parseOptionalOrMinus(pANTLR3_BASE_TREE node, QueryTree::GroupPattern &grouppattern);
		void parseUnion(pANTLR3_BASE_TREE node, QueryTree::GroupPattern &grouppattern);
		void parseFilter(pANTLR3_BASE_TREE node, QueryTree::GroupPattern &grouppattern);
		void parseFilterTree(pANTLR3_BASE_TREE node, QueryTree::GroupPattern::FilterTree::FilterTreeNode &filter);
		void parseVarInExpressionList(pANTLR3_BASE_TREE node, QueryTree::GroupPattern::FilterTree::FilterTreeNode &filter);
		void parseBind(pANTLR3_BASE_TREE node, QueryTree::GroupPattern &grouppattern);
		void parseGroupBy(pANTLR3_BASE_TREE node, QueryTree &querytree);
		void parseOrderBy(pANTLR3_BASE_TREE node, QueryTree &querytree);
		void parseString(pANTLR3_BASE_TREE node, std::string &str, int dep);

		void parseUpdate(pANTLR3_BASE_TREE node, QueryTree &querytree);
		void parseTripleTemplate(pANTLR3_BASE_TREE node, QueryTree::GroupPattern &grouppattern);
		void parseModify(pANTLR3_BASE_TREE node, QueryTree &querytree);
};

#endif /* QUERYPARSER_H_ */