#include <libwccl/parser/Parser.h>

/**
 * @desc Parser constructor. Default tagset is NULL
 */
Parser::Parser(const Corpus2::Tagset& t) : tagset(t)
{
}

/**
 *
 */
Parser::~Parser()
{
	//
}

// ----------------------------------------------------------------------------
/**
 * @desc Parse string operator writed in std::string. Converts writed operator
 *       to istream and calling parseStringOperator with istream
 * @arg str writed operator
 * @retrun boost::shared_ptr<Wccl::StrSet>
 */
boost::shared_ptr<ANTLRParserResult<Wccl::StrSet> > Parser::parseStringOperator(
		const std::string& str) const
{
	std::stringstream ss (std::stringstream::in | std::stringstream::out);
	ss << str;

	return this->parseStringOperator(ss);
}

/**
 * @desc Parse string operator. Runs parse_string_operator rule
 *       in the parser grammar.
 * @arg istr input stream with writed operator
 * @return boost::shared_ptr<Wccl::Function<Wccl::StrSet> > to created operator
 */
boost::shared_ptr<ANTLRParserResult<Wccl::StrSet> > Parser::parseStringOperator(
		std::istream& istr) const
{
	ANTLRLexer lexer(istr);
	ANTLRParser parser(lexer);

	return parser.parse_string_operator(this->tagset);
}

// ----------------------------------------------------------------------------
/**
 * @desc Parse predicates writed in std::string. Converts writed predicates
 *       to istream and calling parsePredicate with istream
 * @arg str writed predicate(s)
 * @return boost::shared_ptr<Wccl::Function<Wccl::Bool> > to created predicate
 */
boost::shared_ptr<ANTLRParserResult<Wccl::Bool> > Parser::parsePredicate(
		const std::string& str) const
{
	std::stringstream ss (std::stringstream::in | std::stringstream::out);
	ss << str;

	return this->parsePredicate(ss);
}

/**
 * @desc Parse predicate. Runs parse_predicates rule in the parser grammar.
 * @arg istr input stream with writed predicate
 * @return boost::shared_ptr<Wccl::Function<Wccl::Bool> > to created predicate
 */
boost::shared_ptr<ANTLRParserResult<Wccl::Bool> > Parser::parsePredicate(
		std::istream& istr) const
{
	ANTLRLexer lexer(istr);
	ANTLRParser parser(lexer);

	return parser.parse_predicates(this->tagset);
}

// ----------------------------------------------------------------------------
/**
 * @desc Parse sym set operator writed in std::string. Converts writed operator
 *       to istream and calling parseSymSetOperator with istream
 * @arg str writed operator
 * @retrun boost::shared_ptr<Wccl::Function<Wccl::TSet> >
 */
boost::shared_ptr<ANTLRParserResult<Wccl::TSet> > Parser::parseSymSetOperator(
		const std::string& str) const
{
	std::stringstream ss (std::stringstream::in | std::stringstream::out);
	ss << str;

	return this->parseSymSetOperator(ss);
}

/**
 * @desc Parse sym set operator. Runs parse_sym_set_operator rule
 *       in the parser grammar.
 * @arg istr input stream with writed operator
 * @return boost::shared_ptr<Wccl::Function<Wccl::TSet> > to created operator
 */
boost::shared_ptr<ANTLRParserResult<Wccl::TSet> > Parser::parseSymSetOperator(
		std::istream& istr) const
{
	ANTLRLexer lexer(istr);
	ANTLRParser parser(lexer);

	return parser.parse_sym_set_operator(this->tagset);
}