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1 files changed, 99 insertions, 0 deletions

diff --git a/ddb/db_lex.h b/ddb/db_lex.h
new file mode 100644
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+++ b/ddb/db_lex.h
@@ -0,0 +1,99 @@
+/* 
+ * Mach Operating System
+ * Copyright (c) 1991,1990 Carnegie Mellon University
+ * All Rights Reserved.
+ * 
+ * Permission to use, copy, modify and distribute this software and its
+ * documentation is hereby granted, provided that both the copyright
+ * notice and this permission notice appear in all copies of the
+ * software, derivative works or modified versions, and any portions
+ * thereof, and that both notices appear in supporting documentation.
+ * 
+ * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
+ * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
+ * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
+ * 
+ * Carnegie Mellon requests users of this software to return to
+ * 
+ *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
+ *  School of Computer Science
+ *  Carnegie Mellon University
+ *  Pittsburgh PA 15213-3890
+ * 
+ * any improvements or extensions that they make and grant Carnegie Mellon
+ * the rights to redistribute these changes.
+ */
+/*
+ *	Author: David B. Golub, Carnegie Mellon University
+ *	Date:	7/90
+ */
+/*
+ * Lexical analyzer.
+ */
+
+#ifndef _DDB_DB_LEX_H_
+#define _DDB_DB_LEX_H_
+
+#define	TOK_STRING_SIZE		64 
+#define DB_LEX_LINE_SIZE	256
+
+struct db_lex_context {
+	int  l_char;		/* peek char */
+	int  l_token;		/* peek token */
+	char *l_ptr;		/* line pointer */
+	char *l_eptr;		/* line end pointer */
+};
+
+extern int	db_lex(void);
+extern int	db_read_line(const char *rep_str);
+extern void	db_flush_line(void);
+extern int	db_read_char(void);
+extern void	db_unread_char(int c);
+extern int	db_read_token(void);
+extern void	db_unread_token(int t);
+extern void	db_flush_lex(void);
+extern void	db_switch_input(char *, int);
+extern void	db_save_lex_context(struct db_lex_context *);
+extern void	db_restore_lex_context(const struct db_lex_context *);
+extern void	db_skip_to_eol(void);
+
+extern db_expr_t db_tok_number;
+extern char	db_tok_string[TOK_STRING_SIZE];
+extern db_expr_t db_radix;
+
+#define	tEOF		(-1)
+#define	tEOL		1
+#define	tNUMBER		2
+#define	tIDENT		3
+#define	tPLUS		4
+#define	tMINUS		5
+#define	tDOT		6
+#define	tSTAR		7
+#define	tSLASH		8
+#define	tEQ		9
+#define	tLPAREN		10
+#define	tRPAREN		11
+#define	tPCT		12
+#define	tHASH		13
+#define	tCOMMA		14
+#define	tQUOTE		15
+#define	tDOLLAR		16
+#define	tEXCL		17
+#define	tSHIFT_L	18
+#define	tSHIFT_R	19
+#define	tDOTDOT		20
+#define tSEMI_COLON	21
+#define tLOG_EQ		22
+#define tLOG_NOT_EQ	23
+#define tLESS		24
+#define tLESS_EQ	25
+#define tGREATER	26
+#define tGREATER_EQ	27
+#define tBIT_AND	28
+#define tBIT_OR		29
+#define tLOG_AND	30
+#define tLOG_OR		31
+#define tSTRING		32
+#define tQUESTION	33
+
+#endif /* _DDB_DB_LEX_H_ */