// The LexGenParser class specialises on the parser skeleton
// provided by the general Parser class.  It contains the
// recursive descent parser code which is specific to the
// language expected by LexGen.

class LexGenParser : public Parser {

// The type RuleType enumerates the three types of rules
// in a LexGen specification.

	enum RuleType { SETTYPE, TOKENTYPE, IGNORETYPE };
	RuleType group;
public:

// The following functions form the recursive descent parser
// for LexGen, with the function specification() being the root.

	void specification(void);
	void rule(void);
	LexRule *ruleHead(void);
	void ruleBody(LexRule *);
	LexNode *qwString();
	LexNode *expression(void);
	LexNode *termSeq(void);
	LexNode *term(void);

	static char *prelude;
	static char *postlude;
	static const char *currentfile;

	LexGenParser(const char *n) : Parser(n)
	{
		currentfile = n; group = SETTYPE;
	}
};