[ceph.git] / ceph / src / boost / tools / build / src / engine / scan.h

/*
 * Copyright 1993, 1995 Christopher Seiwald.
 *
 * This file is part of Jam - see jam.c for Copyright information.
 */

/*
 * scan.h - the jam yacc scanner
 *
 * External functions:
 *  yyerror( char *s ) - print a parsing error message.
 *  yyfparse( char *s ) - scan include file s.
 *  yylex() - parse the next token, returning its type.
 *  yymode() - adjust lexicon of scanner.
 *  yyparse() - declaration for yacc parser.
 *  yyanyerrors() - indicate if any parsing errors occured.
 *
 * The yymode() function is for the parser to adjust the lexicon of the scanner.
 * Aside from normal keyword scanning, there is a mode to handle action strings
 * (look only for the closing }) and a mode to ignore most keywords when looking
 * for a punctuation keyword. This allows non-punctuation keywords to be used in
 * lists without quoting.
 */

#include "lists.h"
#include "object.h"
#include "parse.h"


/*
 * YYSTYPE - value of a lexical token
 */

#define YYSTYPE YYSYMBOL

typedef struct _YYSTYPE
{
    int          type;
    OBJECT     * string;
    PARSE      * parse;
    LIST       * list;
    int          number;
    OBJECT     * file;
    int          line;
    char const * keyword;
} YYSTYPE;

extern YYSTYPE yylval;

void yymode( int n );
void yyerror( char const * s );
int yyanyerrors();
void yyfparse( OBJECT * s );
void yyfdone( void );
int yyline();
int yylex();
int yyparse();
void yyinput_last_read_token( OBJECT * * name, int * line );

#define SCAN_NORMAL  0  /* normal parsing */
#define SCAN_STRING  1  /* look only for matching } */
#define SCAN_PUNCT   2  /* only punctuation keywords */
Commit	Line	Data
7c673cae FG	1	/*
	2	* Copyright 1993, 1995 Christopher Seiwald.
	3	*
	4	* This file is part of Jam - see jam.c for Copyright information.
	5	*/
	6
	7	/*
	8	* scan.h - the jam yacc scanner
	9	*
	10	* External functions:
	11	* yyerror( char *s ) - print a parsing error message.
	12	* yyfparse( char *s ) - scan include file s.
	13	* yylex() - parse the next token, returning its type.
	14	* yymode() - adjust lexicon of scanner.
	15	* yyparse() - declaration for yacc parser.
	16	* yyanyerrors() - indicate if any parsing errors occured.
	17	*
	18	* The yymode() function is for the parser to adjust the lexicon of the scanner.
	19	* Aside from normal keyword scanning, there is a mode to handle action strings
	20	* (look only for the closing }) and a mode to ignore most keywords when looking
	21	* for a punctuation keyword. This allows non-punctuation keywords to be used in
	22	* lists without quoting.
	23	*/
	24
	25	#include "lists.h"
	26	#include "object.h"
	27	#include "parse.h"
	28
	29
	30	/*
	31	* YYSTYPE - value of a lexical token
	32	*/
	33
	34	#define YYSTYPE YYSYMBOL
	35
	36	typedef struct _YYSTYPE
	37	{
	38	int type;
	39	OBJECT * string;
	40	PARSE * parse;
	41	LIST * list;
	42	int number;
	43	OBJECT * file;
	44	int line;
	45	char const * keyword;
	46	} YYSTYPE;
	47
	48	extern YYSTYPE yylval;
	49
	50	void yymode( int n );
	51	void yyerror( char const * s );
	52	int yyanyerrors();
	53	void yyfparse( OBJECT * s );
	54	void yyfdone( void );
	55	int yyline();
	56	int yylex();
	57	int yyparse();
	58	void yyinput_last_read_token( OBJECT * * name, int * line );
	59
	60	#define SCAN_NORMAL 0 /* normal parsing */
	61	#define SCAN_STRING 1 /* look only for matching } */
	62	#define SCAN_PUNCT 2 /* only punctuation keywords */