[moira.git] / clients / mmoira / parser.h

/* $Header$
 * Constants and structures for TOPS-20 style parser
 *
 */

/* type codes for nodes & return values in parse tree */
#define NONE	0
#define KEYWORD 1
#define INTEGER 2
#define STRING  3
#define ADDRESS 4
#define PROC	5
#define ERROR	6
#define EXIT	7
#define ABORT	8


/* return codes from single_parse */
#define OK	0
#define MATCH	1	/* exact match found */
#define	INCOMP	2	/* incomplete field */
#define	AMBIG	3	/* ambiguous response */
#define NOMATCH	4	/* no match */


/* maximum line length for parser */
#define BUFLEN 128

/* the nodes which make up the parse tree */

struct parse_node {
	char	*p_word;	/* keyword, data description */
	MenuItem *p_menu;	/* MMoira menu entry for this command */
	struct parse_node *p_peer;	/* next node this level */
	struct parse_node *p_next;	/* next level nodes */
	struct parse_node *p_link;	/* for temporary chains */
};


#define NULNODE ((struct parse_node *) 0)


/* this structure is used for collecting data to pass to parse functions */

#define pval	struct pvalst

pval {
    char *p_dat;	/* data value or pointer */
    int p_free;		/* size of data to free */
};

/* how many return values are allowed in a single parse */
#define PMAXDAT	8
Commit	Line	Data
053a78b2	1	/* $Header$
	2	* Constants and structures for TOPS-20 style parser
	3	*
	4	*/
	5
	6	/* type codes for nodes & return values in parse tree */
	7	#define NONE 0
	8	#define KEYWORD 1
	9	#define INTEGER 2
	10	#define STRING 3
	11	#define ADDRESS 4
	12	#define PROC 5
	13	#define ERROR 6
	14	#define EXIT 7
	15	#define ABORT 8
	16
	17
	18	/* return codes from single_parse */
	19	#define OK 0
	20	#define MATCH 1 /* exact match found */
	21	#define INCOMP 2 /* incomplete field */
	22	#define AMBIG 3 /* ambiguous response */
	23	#define NOMATCH 4 /* no match */
	24
	25
	26	/* maximum line length for parser */
	27	#define BUFLEN 128
	28
	29	/* the nodes which make up the parse tree */
	30
	31	struct parse_node {
	32	char p_word; / keyword, data description */
	33	MenuItem p_menu; / MMoira menu entry for this command */
	34	struct parse_node p_peer; / next node this level */
	35	struct parse_node p_next; / next level nodes */
	36	struct parse_node p_link; / for temporary chains */
	37	};
	38
	39
	40	#define NULNODE ((struct parse_node *) 0)
	41
	42
	43	/* this structure is used for collecting data to pass to parse functions */
	44
	45	#define pval struct pvalst
	46
	47	pval {
	48	char p_dat; / data value or pointer */
	49	int p_free; /* size of data to free */
	50	};
	51
	52	/* how many return values are allowed in a single parse */
	53	#define PMAXDAT 8