IABSD.fr/src/bin/ksh/lex.h

Branch : - branch - master - tag -

• Show log

  Commit

• Author : jca
  Date : 2018-01-15 14:58:05
  Hash : 3dc0c5b1
  Message : Stop pretending we support building ksh without EDIT/HISTORY support ok anton@

• bin/ksh/lex.h

• /*	$OpenBSD: lex.h,v 1.21 2018/01/15 14:58:05 jca Exp $	*/
  
  /*
   * Source input, lexer and parser
   */
  
  /* $From: lex.h,v 1.4 1994/05/31 13:34:34 michael Exp $ */
  
  #define	IDENT	64
  
  typedef struct source Source;
  struct source {
  	const char *str;	/* input pointer */
  	int	type;		/* input type */
  	const char *start;	/* start of current buffer */
  	union {
  		char **strv;	/* string [] */
  		struct shf *shf; /* shell file */
  		struct tbl *tblp; /* alias (SALIAS) */
  		char *freeme;	/* also for SREREAD */
  	} u;
  	char	ugbuf[2];	/* buffer for ungetsc() (SREREAD) and
  				 * alias (SALIAS) */
  	int	line;		/* line number */
  	int	cmd_offset;	/* line number - command number */
  	int	errline;	/* line the error occurred on (0 if not set) */
  	const char *file;	/* input file name */
  	int	flags;		/* SF_* */
  	Area	*areap;
  	XString	xs;		/* input buffer */
  	Source *next;		/* stacked source */
  };
  
  /* Source.type values */
  #define	SEOF		0	/* input EOF */
  #define	SFILE		1	/* file input */
  #define SSTDIN		2	/* read stdin */
  #define	SSTRING		3	/* string */
  #define	SWSTR		4	/* string without \n */
  #define	SWORDS		5	/* string[] */
  #define	SWORDSEP	6	/* string[] separator */
  #define	SALIAS		7	/* alias expansion */
  #define SREREAD		8	/* read ahead to be re-scanned */
  
  /* Source.flags values */
  #define SF_ECHO		BIT(0)	/* echo input to shlout */
  #define SF_ALIAS	BIT(1)	/* faking space at end of alias */
  #define SF_ALIASEND	BIT(2)	/* faking space at end of alias */
  #define SF_TTY		BIT(3)	/* type == SSTDIN & it is a tty */
  
  typedef union {
  	int	i;
  	char   *cp;
  	char  **wp;
  	struct op *o;
  	struct ioword *iop;
  } YYSTYPE;
  
  /* If something is added here, add it to tokentab[] in syn.c as well */
  #define	LWORD	256
  #define	LOGAND	257		/* && */
  #define	LOGOR	258		/* || */
  #define	BREAK	259		/* ;; */
  #define	IF	260
  #define	THEN	261
  #define	ELSE	262
  #define	ELIF	263
  #define	FI	264
  #define	CASE	265
  #define	ESAC	266
  #define	FOR	267
  #define SELECT	268
  #define	WHILE	269
  #define	UNTIL	270
  #define	DO	271
  #define	DONE	272
  #define	IN	273
  #define	FUNCTION 274
  #define	TIME	275
  #define	REDIR	276
  #define MDPAREN	277		/* (( )) */
  #define BANG	278		/* ! */
  #define DBRACKET 279		/* [[ .. ]] */
  #define COPROC	280		/* |& */
  #define	YYERRCODE 300
  
  /* flags to yylex */
  #define	CONTIN	BIT(0)		/* skip new lines to complete command */
  #define	ONEWORD	BIT(1)		/* single word for substitute() */
  #define	ALIAS	BIT(2)		/* recognize alias */
  #define	KEYWORD	BIT(3)		/* recognize keywords */
  #define LETEXPR	BIT(4)		/* get expression inside (( )) */
  #define VARASN	BIT(5)		/* check for var=word */
  #define ARRAYVAR BIT(6)		/* parse x[1 & 2] as one word */
  #define ESACONLY BIT(7)		/* only accept esac keyword */
  #define CMDWORD BIT(8)		/* parsing simple command (alias related) */
  #define HEREDELIM BIT(9)	/* parsing <<,<<- delimiter */
  #define HEREDOC BIT(10)		/* parsing heredoc */
  #define UNESCAPE BIT(11)	/* remove backslashes */
  
  #define	HERES	10		/* max << in line */
  
  extern Source  *source;		/* yyparse/yylex source */
  extern YYSTYPE	yylval;		/* result from yylex */
  extern struct ioword *heres[HERES], **herep;
  extern char	ident[IDENT+1];
  
  #define HISTORYSIZE	500	/* size of saved history */
  
  extern char   **history;	/* saved commands */
  extern char   **histptr;	/* last history item */
  extern uint32_t	histsize;	/* history size */
  
  int	yylex(int);
  void	yyerror(const char *, ...)
  	    __attribute__((__noreturn__, __format__ (printf, 1, 2)));
  Source * pushs(int, Area *);
  void	set_prompt(int);
  void	pprompt(const char *, int);