/**
 *  @file
 *  @author     2012-2014 Stefan Radomski (stefan.radomski@cs.tu-darmstadt.de)
 *  @copyright  Simplified BSD
 *
 *  @cond
 *  This program is free software: you can redistribute it and/or modify
 *  it under the terms of the FreeBSD license as published by the FreeBSD
 *  project.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 *
 *  You should have received a copy of the FreeBSD license along with this
 *  program. If not, see <http://www.opensource.org/licenses/bsd-license>.
 *  @endcond
 */

// bison -v promela.ypp && flex promela.l

#ifndef PROMELA_H_9AB78YB1
#define PROMELA_H_9AB78YB1

#include <stdlib.h>
//#include <stdarg.h>
#include <cstdarg>

#include "uscxml/Message.h"

namespace uscxml {

class PromelaParser;

class PromelaParserNode {
public:
	struct Location {
		int firstLine;
		int firstCol;
		int lastLine;
		int lastCol;
	};

	PromelaParserNode() : type(0), parent(NULL), loc(NULL) {}
	virtual ~PromelaParserNode();

	void merge(PromelaParserNode* node);
	void push(PromelaParserNode* node);
	void dump(int indent = 0);

	static std::string typeToDesc(int type);

	int type;
	std::string value;
	std::list<PromelaParserNode*> operands;
	PromelaParserNode* parent;
	Location* loc;
};

class PromelaParser {
public:
	enum Type {
		PROMELA_EXPR,
		PROMELA_DECL,
		PROMELA_STMNT
	};

	static std::string typeToDesc(int type);

	PromelaParser() : ast(NULL) {}
	PromelaParser(const std::string& expr);
	PromelaParser(const std::string& expr, int nrArgs, ...);
	virtual ~PromelaParser();

	virtual PromelaParserNode* node(int type, int nrArgs, ...);
	virtual PromelaParserNode* value(int type, void* location, const char* value);
	void dump();

	int parseInCompound;

	PromelaParserNode* ast;
	Type type;

	Event pendingException;
	operator bool() const {
		return ast != NULL;
	}

protected:

	void init(const std::string& expr);
	void destroy();

	void* buffer;
	void* scanner;
	char* input;
	size_t input_length;
};

}

void promela_error (void* yylloc_param, uscxml::PromelaParser* ctx, void* yyscanner, const char* err);

#endif /* end of include guard: PROMELA_H_9AB78YB1 */