Import pdksh 5.2.7.

1 files changed, 128 insertions, 0 deletions

diff --git a/bin/ksh/lex.h b/bin/ksh/lex.h
new file mode 100644
index 00000000000..f4517db927f
--- /dev/null
+++ b/bin/ksh/lex.h
@@ -0,0 +1,128 @@
+/*	$OpenBSD: lex.h,v 1.1 1996/08/14 06:19:11 downsj 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 */
+	char const *start;	/* start of current buffer */
+	union {
+		char ugbuf[2];	/* buffer for ungetsc() (SREREAD) */
+		char **strv;	/* string [] */
+		struct shf *shf; /* shell file */
+		struct tbl *tblp; /* alias */
+		char *freeme;	/* also for SREREAD */
+	} u;
+	int	line;		/* line number */
+	int	errline;	/* line the error occured 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[] seperator */
+#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 */
+
+/*
+ * states while lexing word
+ */
+#define	SBASE	0		/* outside any lexical constructs */
+#define	SWORD	1		/* implicit quoting for substitute() */
+#define	SDPAREN	2		/* inside (( )), implicit quoting */
+#define	SSQUOTE	3		/* inside '' */
+#define	SDQUOTE	4		/* inside "" */
+#define	SBRACE	5		/* inside ${} */
+#define	SPAREN	6		/* inside $() */
+#define	SBQUOTE	7		/* inside `` */
+#define	SDDPAREN 8		/* inside $(( )) */
+#define SHEREDELIM 9		/* parsing <<,<<- delimiter */
+#define SHEREDQUOTE 10		/* parsing " in <<,<<- delimiter */
+#define SPATTERN 11		/* parsing *(...|...) pattern (*+?@!) */
+#define STBRACE 12		/* parsing ${..[#%]..} */
+
+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	HERES	10		/* max << in line */
+
+EXTERN	Source *source;		/* yyparse/yylex source */
+EXTERN	YYSTYPE	yylval;		/* result from yylex */
+EXTERN	int	yynerrs;
+EXTERN	struct ioword *heres [HERES], **herep;
+EXTERN	char	ident [IDENT+1];
+
+#ifdef HISTORY
+# define HISTORYSIZE	128	/* size of saved history */
+
+EXTERN	char  **history;	/* saved commands */
+EXTERN	char  **histptr;	/* last history item */
+EXTERN	int	histsize;	/* history size */
+#endif /* HISTORY */