1050 lines
35 KiB
C
1050 lines
35 KiB
C
/* flexdef - definitions file for flex */
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/*-
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* Copyright (c) 1990 The Regents of the University of California.
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Vern Paxson.
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*
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* The United States Government has rights in this work pursuant
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* to contract no. DE-AC03-76SF00098 between the United States
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* Department of Energy and the University of California.
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*
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* Redistribution and use in source and binary forms are permitted provided
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* that: (1) source distributions retain this entire copyright notice and
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* comment, and (2) distributions including binaries display the following
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* acknowledgement: ``This product includes software developed by the
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* University of California, Berkeley and its contributors'' in the
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* documentation or other materials provided with the distribution and in
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* all advertising materials mentioning features or use of this software.
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* Neither the name of the University nor the names of its contributors may
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* be used to endorse or promote products derived from this software without
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* specific prior written permission.
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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*/
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/* @(#) $Header: /home/daffy/u0/vern/flex/RCS/flexdef.h,v 2.53 95/04/20 11:17:36 vern Exp $ (LBL) */
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/* $FreeBSD$ */
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#include <stdio.h>
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#include <ctype.h>
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#include "config.h"
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#ifdef __TURBOC__
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#define HAVE_STRING_H 1
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#define MS_DOS 1
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#ifndef __STDC__
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#define __STDC__ 1
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#endif
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#pragma warn -pro
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#pragma warn -rch
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#pragma warn -use
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#pragma warn -aus
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#pragma warn -par
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#pragma warn -pia
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#endif
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#ifdef HAVE_STRING_H
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#include <string.h>
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#else
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#include <strings.h>
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#endif
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#ifdef HAVE_SYS_TYPES_H
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#include <sys/types.h>
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#endif
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#ifdef HAVE_MALLOC_H
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#include <malloc.h>
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#endif
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#ifdef STDC_HEADERS
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#include <stdlib.h>
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#endif
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/* As an aid for the internationalization patch to flex, which
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* is maintained outside this distribution for copyright reasons.
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*/
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#define _(String) (String)
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/* Always be prepared to generate an 8-bit scanner. */
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#define CSIZE 256
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#define Char unsigned char
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/* Size of input alphabet - should be size of ASCII set. */
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#ifndef DEFAULT_CSIZE
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#define DEFAULT_CSIZE 128
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#endif
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#ifndef PROTO
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#if __STDC__
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#define PROTO(proto) proto
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#else
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#define PROTO(proto) ()
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#endif
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#endif
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#ifdef VMS
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#ifndef __VMS_POSIX
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#define unlink remove
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#define SHORT_FILE_NAMES
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#endif
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#endif
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#ifdef MS_DOS
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#define SHORT_FILE_NAMES
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#endif
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/* Maximum line length we'll have to deal with. */
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#define MAXLINE 2048
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#ifndef MIN
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#define MIN(x,y) ((x) < (y) ? (x) : (y))
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#endif
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#ifndef MAX
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#define MAX(x,y) ((x) > (y) ? (x) : (y))
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#endif
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#ifndef ABS
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#define ABS(x) ((x) < 0 ? -(x) : (x))
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#endif
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/* ANSI C does not guarantee that isascii() is defined */
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#ifndef isascii
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#define isascii(c) ((c) <= 0177)
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#endif
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#define true 1
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#define false 0
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#define unspecified -1
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/* Special chk[] values marking the slots taking by end-of-buffer and action
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* numbers.
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*/
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#define EOB_POSITION -1
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#define ACTION_POSITION -2
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/* Number of data items per line for -f output. */
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#define NUMDATAITEMS 10
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/* Number of lines of data in -f output before inserting a blank line for
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* readability.
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*/
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#define NUMDATALINES 10
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/* transition_struct_out() definitions. */
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#define TRANS_STRUCT_PRINT_LENGTH 14
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/* Returns true if an nfa state has an epsilon out-transition slot
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* that can be used. This definition is currently not used.
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*/
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#define FREE_EPSILON(state) \
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(transchar[state] == SYM_EPSILON && \
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trans2[state] == NO_TRANSITION && \
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finalst[state] != state)
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/* Returns true if an nfa state has an epsilon out-transition character
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* and both slots are free
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*/
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#define SUPER_FREE_EPSILON(state) \
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(transchar[state] == SYM_EPSILON && \
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trans1[state] == NO_TRANSITION) \
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/* Maximum number of NFA states that can comprise a DFA state. It's real
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* big because if there's a lot of rules, the initial state will have a
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* huge epsilon closure.
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*/
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#define INITIAL_MAX_DFA_SIZE 750
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#define MAX_DFA_SIZE_INCREMENT 750
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/* A note on the following masks. They are used to mark accepting numbers
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* as being special. As such, they implicitly limit the number of accepting
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* numbers (i.e., rules) because if there are too many rules the rule numbers
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* will overload the mask bits. Fortunately, this limit is \large/ (0x2000 ==
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* 8192) so unlikely to actually cause any problems. A check is made in
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* new_rule() to ensure that this limit is not reached.
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*/
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/* Mask to mark a trailing context accepting number. */
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#define YY_TRAILING_MASK 0x2000
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/* Mask to mark the accepting number of the "head" of a trailing context
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* rule.
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*/
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#define YY_TRAILING_HEAD_MASK 0x4000
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/* Maximum number of rules, as outlined in the above note. */
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#define MAX_RULE (YY_TRAILING_MASK - 1)
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/* NIL must be 0. If not, its special meaning when making equivalence classes
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* (it marks the representative of a given e.c.) will be unidentifiable.
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*/
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#define NIL 0
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#define JAM -1 /* to mark a missing DFA transition */
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#define NO_TRANSITION NIL
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#define UNIQUE -1 /* marks a symbol as an e.c. representative */
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#define INFINITY -1 /* for x{5,} constructions */
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#define INITIAL_MAX_CCLS 100 /* max number of unique character classes */
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#define MAX_CCLS_INCREMENT 100
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/* Size of table holding members of character classes. */
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#define INITIAL_MAX_CCL_TBL_SIZE 500
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#define MAX_CCL_TBL_SIZE_INCREMENT 250
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#define INITIAL_MAX_RULES 100 /* default maximum number of rules */
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#define MAX_RULES_INCREMENT 100
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#define INITIAL_MNS 2000 /* default maximum number of nfa states */
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#define MNS_INCREMENT 1000 /* amount to bump above by if it's not enough */
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#define INITIAL_MAX_DFAS 1000 /* default maximum number of dfa states */
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#define MAX_DFAS_INCREMENT 1000
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#define JAMSTATE -32766 /* marks a reference to the state that always jams */
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/* Maximum number of NFA states. */
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#define MAXIMUM_MNS 31999
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/* Enough so that if it's subtracted from an NFA state number, the result
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* is guaranteed to be negative.
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*/
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#define MARKER_DIFFERENCE (MAXIMUM_MNS+2)
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/* Maximum number of nxt/chk pairs for non-templates. */
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#define INITIAL_MAX_XPAIRS 2000
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#define MAX_XPAIRS_INCREMENT 2000
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/* Maximum number of nxt/chk pairs needed for templates. */
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#define INITIAL_MAX_TEMPLATE_XPAIRS 2500
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#define MAX_TEMPLATE_XPAIRS_INCREMENT 2500
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#define SYM_EPSILON (CSIZE + 1) /* to mark transitions on the symbol epsilon */
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#define INITIAL_MAX_SCS 40 /* maximum number of start conditions */
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#define MAX_SCS_INCREMENT 40 /* amount to bump by if it's not enough */
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#define ONE_STACK_SIZE 500 /* stack of states with only one out-transition */
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#define SAME_TRANS -1 /* transition is the same as "default" entry for state */
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/* The following percentages are used to tune table compression:
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* The percentage the number of out-transitions a state must be of the
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* number of equivalence classes in order to be considered for table
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* compaction by using protos.
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*/
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#define PROTO_SIZE_PERCENTAGE 15
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/* The percentage the number of homogeneous out-transitions of a state
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* must be of the number of total out-transitions of the state in order
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* that the state's transition table is first compared with a potential
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* template of the most common out-transition instead of with the first
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* proto in the proto queue.
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*/
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#define CHECK_COM_PERCENTAGE 50
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/* The percentage the number of differences between a state's transition
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* table and the proto it was first compared with must be of the total
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* number of out-transitions of the state in order to keep the first
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* proto as a good match and not search any further.
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*/
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#define FIRST_MATCH_DIFF_PERCENTAGE 10
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/* The percentage the number of differences between a state's transition
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* table and the most similar proto must be of the state's total number
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* of out-transitions to use the proto as an acceptable close match.
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*/
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#define ACCEPTABLE_DIFF_PERCENTAGE 50
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/* The percentage the number of homogeneous out-transitions of a state
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* must be of the number of total out-transitions of the state in order
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* to consider making a template from the state.
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*/
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#define TEMPLATE_SAME_PERCENTAGE 60
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/* The percentage the number of differences between a state's transition
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* table and the most similar proto must be of the state's total number
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* of out-transitions to create a new proto from the state.
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*/
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#define NEW_PROTO_DIFF_PERCENTAGE 20
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/* The percentage the total number of out-transitions of a state must be
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* of the number of equivalence classes in order to consider trying to
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* fit the transition table into "holes" inside the nxt/chk table.
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*/
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#define INTERIOR_FIT_PERCENTAGE 15
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/* Size of region set aside to cache the complete transition table of
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* protos on the proto queue to enable quick comparisons.
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*/
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#define PROT_SAVE_SIZE 2000
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#define MSP 50 /* maximum number of saved protos (protos on the proto queue) */
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/* Maximum number of out-transitions a state can have that we'll rummage
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* around through the interior of the internal fast table looking for a
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* spot for it.
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*/
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#define MAX_XTIONS_FULL_INTERIOR_FIT 4
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/* Maximum number of rules which will be reported as being associated
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* with a DFA state.
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*/
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#define MAX_ASSOC_RULES 100
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/* Number that, if used to subscript an array, has a good chance of producing
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* an error; should be small enough to fit into a short.
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*/
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#define BAD_SUBSCRIPT -32767
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/* Absolute value of largest number that can be stored in a short, with a
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* bit of slop thrown in for general paranoia.
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*/
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#define MAX_SHORT 32700
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/* Declarations for global variables. */
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/* Variables for symbol tables:
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* sctbl - start-condition symbol table
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* ndtbl - name-definition symbol table
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* ccltab - character class text symbol table
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*/
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struct hash_entry
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{
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struct hash_entry *prev, *next;
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char *name;
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char *str_val;
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int int_val;
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} ;
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typedef struct hash_entry **hash_table;
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#define NAME_TABLE_HASH_SIZE 101
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#define START_COND_HASH_SIZE 101
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#define CCL_HASH_SIZE 101
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extern struct hash_entry *ndtbl[NAME_TABLE_HASH_SIZE];
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extern struct hash_entry *sctbl[START_COND_HASH_SIZE];
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extern struct hash_entry *ccltab[CCL_HASH_SIZE];
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/* Variables for flags:
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* printstats - if true (-v), dump statistics
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* syntaxerror - true if a syntax error has been found
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* eofseen - true if we've seen an eof in the input file
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* ddebug - if true (-d), make a "debug" scanner
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* trace - if true (-T), trace processing
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* nowarn - if true (-w), do not generate warnings
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* spprdflt - if true (-s), suppress the default rule
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* interactive - if true (-I), generate an interactive scanner
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* caseins - if true (-i), generate a case-insensitive scanner
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* lex_compat - if true (-l), maximize compatibility with AT&T lex
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* do_yylineno - if true, generate code to maintain yylineno
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* useecs - if true (-Ce flag), use equivalence classes
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* fulltbl - if true (-Cf flag), don't compress the DFA state table
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* usemecs - if true (-Cm flag), use meta-equivalence classes
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* fullspd - if true (-F flag), use Jacobson method of table representation
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* gen_line_dirs - if true (i.e., no -L flag), generate #line directives
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* performance_report - if > 0 (i.e., -p flag), generate a report relating
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* to scanner performance; if > 1 (-p -p), report on minor performance
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* problems, too
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* backing_up_report - if true (i.e., -b flag), generate "lex.backup" file
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* listing backing-up states
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* C_plus_plus - if true (i.e., -+ flag), generate a C++ scanner class;
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* otherwise, a standard C scanner
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* long_align - if true (-Ca flag), favor long-word alignment.
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* use_read - if true (-f, -F, or -Cr) then use read() for scanner input;
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* otherwise, use fread().
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* yytext_is_array - if true (i.e., %array directive), then declare
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* yytext as an array instead of a character pointer. Nice and inefficient.
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* do_yywrap - do yywrap() processing on EOF. If false, EOF treated as
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* "no more files".
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* csize - size of character set for the scanner we're generating;
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* 128 for 7-bit chars and 256 for 8-bit
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* yymore_used - if true, yymore() is used in input rules
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* reject - if true, generate back-up tables for REJECT macro
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* real_reject - if true, scanner really uses REJECT (as opposed to just
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* having "reject" set for variable trailing context)
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* continued_action - true if this rule's action is to "fall through" to
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* the next rule's action (i.e., the '|' action)
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* in_rule - true if we're inside an individual rule, false if not.
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* yymore_really_used - whether to treat yymore() as really used, regardless
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* of what we think based on references to it in the user's actions.
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* reject_really_used - same for REJECT
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*/
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extern int printstats, syntaxerror, eofseen, ddebug, trace, nowarn, spprdflt;
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extern int interactive, caseins, lex_compat, do_yylineno;
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extern int useecs, fulltbl, usemecs, fullspd;
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extern int gen_line_dirs, performance_report, backing_up_report;
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extern int C_plus_plus, long_align, use_read, yytext_is_array, do_yywrap;
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extern int csize;
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extern int yymore_used, reject, real_reject, continued_action, in_rule;
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extern int yymore_really_used, reject_really_used;
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/* Variables used in the flex input routines:
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* datapos - characters on current output line
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* dataline - number of contiguous lines of data in current data
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* statement. Used to generate readable -f output
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* linenum - current input line number
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* out_linenum - current output line number
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* skelfile - the skeleton file
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* skel - compiled-in skeleton array
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* skel_ind - index into "skel" array, if skelfile is nil
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* yyin - input file
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* backing_up_file - file to summarize backing-up states to
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* infilename - name of input file
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* outfilename - name of output file
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* did_outfilename - whether outfilename was explicitly set
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* prefix - the prefix used for externally visible names ("yy" by default)
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* yyclass - yyFlexLexer subclass to use for YY_DECL
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* do_stdinit - whether to initialize yyin/yyout to stdin/stdout
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* use_stdout - the -t flag
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* input_files - array holding names of input files
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* num_input_files - size of input_files array
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* program_name - name with which program was invoked
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*
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* action_array - array to hold the rule actions
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* action_size - size of action_array
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* defs1_offset - index where the user's section 1 definitions start
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* in action_array
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* prolog_offset - index where the prolog starts in action_array
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* action_offset - index where the non-prolog starts in action_array
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* action_index - index where the next action should go, with respect
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* to "action_array"
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*/
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extern int datapos, dataline, linenum, out_linenum;
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extern FILE *skelfile, *yyin, *backing_up_file;
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extern const char *skel[];
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extern int skel_ind;
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extern char *infilename, *outfilename;
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extern int did_outfilename;
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extern char *prefix, *yyclass;
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extern int do_stdinit, use_stdout;
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extern char **input_files;
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extern int num_input_files;
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extern char *program_name;
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extern char *action_array;
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extern int action_size;
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extern int defs1_offset, prolog_offset, action_offset, action_index;
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/* Variables for stack of states having only one out-transition:
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* onestate - state number
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* onesym - transition symbol
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* onenext - target state
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* onedef - default base entry
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* onesp - stack pointer
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*/
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extern int onestate[ONE_STACK_SIZE], onesym[ONE_STACK_SIZE];
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extern int onenext[ONE_STACK_SIZE], onedef[ONE_STACK_SIZE], onesp;
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/* Variables for nfa machine data:
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* current_mns - current maximum on number of NFA states
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* num_rules - number of the last accepting state; also is number of
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* rules created so far
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* num_eof_rules - number of <<EOF>> rules
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* default_rule - number of the default rule
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* current_max_rules - current maximum number of rules
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* lastnfa - last nfa state number created
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* firstst - physically the first state of a fragment
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* lastst - last physical state of fragment
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* finalst - last logical state of fragment
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* transchar - transition character
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* trans1 - transition state
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* trans2 - 2nd transition state for epsilons
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* accptnum - accepting number
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* assoc_rule - rule associated with this NFA state (or 0 if none)
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* state_type - a STATE_xxx type identifying whether the state is part
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* of a normal rule, the leading state in a trailing context
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* rule (i.e., the state which marks the transition from
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* recognizing the text-to-be-matched to the beginning of
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* the trailing context), or a subsequent state in a trailing
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* context rule
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* rule_type - a RULE_xxx type identifying whether this a ho-hum
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* normal rule or one which has variable head & trailing
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* context
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* rule_linenum - line number associated with rule
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* rule_useful - true if we've determined that the rule can be matched
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*/
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extern int current_mns, current_max_rules;
|
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extern int num_rules, num_eof_rules, default_rule, lastnfa;
|
|
extern int *firstst, *lastst, *finalst, *transchar, *trans1, *trans2;
|
|
extern int *accptnum, *assoc_rule, *state_type;
|
|
extern int *rule_type, *rule_linenum, *rule_useful;
|
|
|
|
/* Different types of states; values are useful as masks, as well, for
|
|
* routines like check_trailing_context().
|
|
*/
|
|
#define STATE_NORMAL 0x1
|
|
#define STATE_TRAILING_CONTEXT 0x2
|
|
|
|
/* Global holding current type of state we're making. */
|
|
|
|
extern int current_state_type;
|
|
|
|
/* Different types of rules. */
|
|
#define RULE_NORMAL 0
|
|
#define RULE_VARIABLE 1
|
|
|
|
/* True if the input rules include a rule with both variable-length head
|
|
* and trailing context, false otherwise.
|
|
*/
|
|
extern int variable_trailing_context_rules;
|
|
|
|
|
|
/* Variables for protos:
|
|
* numtemps - number of templates created
|
|
* numprots - number of protos created
|
|
* protprev - backlink to a more-recently used proto
|
|
* protnext - forward link to a less-recently used proto
|
|
* prottbl - base/def table entry for proto
|
|
* protcomst - common state of proto
|
|
* firstprot - number of the most recently used proto
|
|
* lastprot - number of the least recently used proto
|
|
* protsave contains the entire state array for protos
|
|
*/
|
|
|
|
extern int numtemps, numprots, protprev[MSP], protnext[MSP], prottbl[MSP];
|
|
extern int protcomst[MSP], firstprot, lastprot, protsave[PROT_SAVE_SIZE];
|
|
|
|
|
|
/* Variables for managing equivalence classes:
|
|
* numecs - number of equivalence classes
|
|
* nextecm - forward link of Equivalence Class members
|
|
* ecgroup - class number or backward link of EC members
|
|
* nummecs - number of meta-equivalence classes (used to compress
|
|
* templates)
|
|
* tecfwd - forward link of meta-equivalence classes members
|
|
* tecbck - backward link of MEC's
|
|
*/
|
|
|
|
/* Reserve enough room in the equivalence class arrays so that we
|
|
* can use the CSIZE'th element to hold equivalence class information
|
|
* for the NUL character. Later we'll move this information into
|
|
* the 0th element.
|
|
*/
|
|
extern int numecs, nextecm[CSIZE + 1], ecgroup[CSIZE + 1], nummecs;
|
|
|
|
/* Meta-equivalence classes are indexed starting at 1, so it's possible
|
|
* that they will require positions from 1 .. CSIZE, i.e., CSIZE + 1
|
|
* slots total (since the arrays are 0-based). nextecm[] and ecgroup[]
|
|
* don't require the extra position since they're indexed from 1 .. CSIZE - 1.
|
|
*/
|
|
extern int tecfwd[CSIZE + 1], tecbck[CSIZE + 1];
|
|
|
|
|
|
/* Variables for start conditions:
|
|
* lastsc - last start condition created
|
|
* current_max_scs - current limit on number of start conditions
|
|
* scset - set of rules active in start condition
|
|
* scbol - set of rules active only at the beginning of line in a s.c.
|
|
* scxclu - true if start condition is exclusive
|
|
* sceof - true if start condition has EOF rule
|
|
* scname - start condition name
|
|
*/
|
|
|
|
extern int lastsc, *scset, *scbol, *scxclu, *sceof;
|
|
extern int current_max_scs;
|
|
extern char **scname;
|
|
|
|
|
|
/* Variables for dfa machine data:
|
|
* current_max_dfa_size - current maximum number of NFA states in DFA
|
|
* current_max_xpairs - current maximum number of non-template xtion pairs
|
|
* current_max_template_xpairs - current maximum number of template pairs
|
|
* current_max_dfas - current maximum number DFA states
|
|
* lastdfa - last dfa state number created
|
|
* nxt - state to enter upon reading character
|
|
* chk - check value to see if "nxt" applies
|
|
* tnxt - internal nxt table for templates
|
|
* base - offset into "nxt" for given state
|
|
* def - where to go if "chk" disallows "nxt" entry
|
|
* nultrans - NUL transition for each state
|
|
* NUL_ec - equivalence class of the NUL character
|
|
* tblend - last "nxt/chk" table entry being used
|
|
* firstfree - first empty entry in "nxt/chk" table
|
|
* dss - nfa state set for each dfa
|
|
* dfasiz - size of nfa state set for each dfa
|
|
* dfaacc - accepting set for each dfa state (if using REJECT), or accepting
|
|
* number, if not
|
|
* accsiz - size of accepting set for each dfa state
|
|
* dhash - dfa state hash value
|
|
* numas - number of DFA accepting states created; note that this
|
|
* is not necessarily the same value as num_rules, which is the analogous
|
|
* value for the NFA
|
|
* numsnpairs - number of state/nextstate transition pairs
|
|
* jambase - position in base/def where the default jam table starts
|
|
* jamstate - state number corresponding to "jam" state
|
|
* end_of_buffer_state - end-of-buffer dfa state number
|
|
*/
|
|
|
|
extern int current_max_dfa_size, current_max_xpairs;
|
|
extern int current_max_template_xpairs, current_max_dfas;
|
|
extern int lastdfa, *nxt, *chk, *tnxt;
|
|
extern int *base, *def, *nultrans, NUL_ec, tblend, firstfree, **dss, *dfasiz;
|
|
extern union dfaacc_union
|
|
{
|
|
int *dfaacc_set;
|
|
int dfaacc_state;
|
|
} *dfaacc;
|
|
extern int *accsiz, *dhash, numas;
|
|
extern int numsnpairs, jambase, jamstate;
|
|
extern int end_of_buffer_state;
|
|
|
|
/* Variables for ccl information:
|
|
* lastccl - ccl index of the last created ccl
|
|
* current_maxccls - current limit on the maximum number of unique ccl's
|
|
* cclmap - maps a ccl index to its set pointer
|
|
* ccllen - gives the length of a ccl
|
|
* cclng - true for a given ccl if the ccl is negated
|
|
* cclreuse - counts how many times a ccl is re-used
|
|
* current_max_ccl_tbl_size - current limit on number of characters needed
|
|
* to represent the unique ccl's
|
|
* ccltbl - holds the characters in each ccl - indexed by cclmap
|
|
*/
|
|
|
|
extern int lastccl, *cclmap, *ccllen, *cclng, cclreuse;
|
|
extern int current_maxccls, current_max_ccl_tbl_size;
|
|
extern Char *ccltbl;
|
|
|
|
|
|
/* Variables for miscellaneous information:
|
|
* nmstr - last NAME scanned by the scanner
|
|
* sectnum - section number currently being parsed
|
|
* nummt - number of empty nxt/chk table entries
|
|
* hshcol - number of hash collisions detected by snstods
|
|
* dfaeql - number of times a newly created dfa was equal to an old one
|
|
* numeps - number of epsilon NFA states created
|
|
* eps2 - number of epsilon states which have 2 out-transitions
|
|
* num_reallocs - number of times it was necessary to realloc() a group
|
|
* of arrays
|
|
* tmpuses - number of DFA states that chain to templates
|
|
* totnst - total number of NFA states used to make DFA states
|
|
* peakpairs - peak number of transition pairs we had to store internally
|
|
* numuniq - number of unique transitions
|
|
* numdup - number of duplicate transitions
|
|
* hshsave - number of hash collisions saved by checking number of states
|
|
* num_backing_up - number of DFA states requiring backing up
|
|
* bol_needed - whether scanner needs beginning-of-line recognition
|
|
*/
|
|
|
|
extern char nmstr[MAXLINE];
|
|
extern int sectnum, nummt, hshcol, dfaeql, numeps, eps2, num_reallocs;
|
|
extern int tmpuses, totnst, peakpairs, numuniq, numdup, hshsave;
|
|
extern int num_backing_up, bol_needed;
|
|
|
|
void *allocate_array PROTO((int, size_t));
|
|
void *reallocate_array PROTO((void*, int, size_t));
|
|
|
|
void *flex_alloc PROTO((size_t));
|
|
void *flex_realloc PROTO((void*, size_t));
|
|
void flex_free PROTO((void*));
|
|
|
|
#define allocate_integer_array(size) \
|
|
(int *) allocate_array( size, sizeof( int ) )
|
|
|
|
#define reallocate_integer_array(array,size) \
|
|
(int *) reallocate_array( (void *) array, size, sizeof( int ) )
|
|
|
|
#define allocate_int_ptr_array(size) \
|
|
(int **) allocate_array( size, sizeof( int * ) )
|
|
|
|
#define allocate_char_ptr_array(size) \
|
|
(char **) allocate_array( size, sizeof( char * ) )
|
|
|
|
#define allocate_dfaacc_union(size) \
|
|
(union dfaacc_union *) \
|
|
allocate_array( size, sizeof( union dfaacc_union ) )
|
|
|
|
#define reallocate_int_ptr_array(array,size) \
|
|
(int **) reallocate_array( (void *) array, size, sizeof( int * ) )
|
|
|
|
#define reallocate_char_ptr_array(array,size) \
|
|
(char **) reallocate_array( (void *) array, size, sizeof( char * ) )
|
|
|
|
#define reallocate_dfaacc_union(array, size) \
|
|
(union dfaacc_union *) \
|
|
reallocate_array( (void *) array, size, sizeof( union dfaacc_union ) )
|
|
|
|
#define allocate_character_array(size) \
|
|
(char *) allocate_array( size, sizeof( char ) )
|
|
|
|
#define reallocate_character_array(array,size) \
|
|
(char *) reallocate_array( (void *) array, size, sizeof( char ) )
|
|
|
|
#define allocate_Character_array(size) \
|
|
(Char *) allocate_array( size, sizeof( Char ) )
|
|
|
|
#define reallocate_Character_array(array,size) \
|
|
(Char *) reallocate_array( (void *) array, size, sizeof( Char ) )
|
|
|
|
|
|
/* Used to communicate between scanner and parser. The type should really
|
|
* be YYSTYPE, but we can't easily get our hands on it.
|
|
*/
|
|
extern int yylval;
|
|
|
|
|
|
/* External functions that are cross-referenced among the flex source files. */
|
|
|
|
|
|
/* from file ccl.c */
|
|
|
|
extern void ccladd PROTO((int, int)); /* add a single character to a ccl */
|
|
extern int cclinit PROTO((void)); /* make an empty ccl */
|
|
extern void cclnegate PROTO((int)); /* negate a ccl */
|
|
|
|
/* List the members of a set of characters in CCL form. */
|
|
extern void list_character_set PROTO((FILE*, int[]));
|
|
|
|
|
|
/* from file dfa.c */
|
|
|
|
/* Check a DFA state for backing up. */
|
|
extern void check_for_backing_up PROTO((int, int[]));
|
|
|
|
/* Check to see if NFA state set constitutes "dangerous" trailing context. */
|
|
extern void check_trailing_context PROTO((int*, int, int*, int));
|
|
|
|
/* Construct the epsilon closure of a set of ndfa states. */
|
|
extern int *epsclosure PROTO((int*, int*, int[], int*, int*));
|
|
|
|
/* Increase the maximum number of dfas. */
|
|
extern void increase_max_dfas PROTO((void));
|
|
|
|
extern void ntod PROTO((void)); /* convert a ndfa to a dfa */
|
|
|
|
/* Converts a set of ndfa states into a dfa state. */
|
|
extern int snstods PROTO((int[], int, int[], int, int, int*));
|
|
|
|
|
|
/* from file ecs.c */
|
|
|
|
/* Convert character classes to set of equivalence classes. */
|
|
extern void ccl2ecl PROTO((void));
|
|
|
|
/* Associate equivalence class numbers with class members. */
|
|
extern int cre8ecs PROTO((int[], int[], int));
|
|
|
|
/* Update equivalence classes based on character class transitions. */
|
|
extern void mkeccl PROTO((Char[], int, int[], int[], int, int));
|
|
|
|
/* Create equivalence class for single character. */
|
|
extern void mkechar PROTO((int, int[], int[]));
|
|
|
|
|
|
/* from file gen.c */
|
|
|
|
extern void do_indent PROTO((void)); /* indent to the current level */
|
|
|
|
/* Generate the code to keep backing-up information. */
|
|
extern void gen_backing_up PROTO((void));
|
|
|
|
/* Generate the code to perform the backing up. */
|
|
extern void gen_bu_action PROTO((void));
|
|
|
|
/* Generate full speed compressed transition table. */
|
|
extern void genctbl PROTO((void));
|
|
|
|
/* Generate the code to find the action number. */
|
|
extern void gen_find_action PROTO((void));
|
|
|
|
extern void genftbl PROTO((void)); /* generate full transition table */
|
|
|
|
/* Generate the code to find the next compressed-table state. */
|
|
extern void gen_next_compressed_state PROTO((char*));
|
|
|
|
/* Generate the code to find the next match. */
|
|
extern void gen_next_match PROTO((void));
|
|
|
|
/* Generate the code to find the next state. */
|
|
extern void gen_next_state PROTO((int));
|
|
|
|
/* Generate the code to make a NUL transition. */
|
|
extern void gen_NUL_trans PROTO((void));
|
|
|
|
/* Generate the code to find the start state. */
|
|
extern void gen_start_state PROTO((void));
|
|
|
|
/* Generate data statements for the transition tables. */
|
|
extern void gentabs PROTO((void));
|
|
|
|
/* Write out a formatted string at the current indentation level. */
|
|
extern void indent_put2s PROTO((char[], char[]));
|
|
|
|
/* Write out a string + newline at the current indentation level. */
|
|
extern void indent_puts PROTO((char[]));
|
|
|
|
extern void make_tables PROTO((void)); /* generate transition tables */
|
|
|
|
|
|
/* from file main.c */
|
|
|
|
extern void check_options PROTO((void));
|
|
extern void flexend PROTO((int));
|
|
extern void usage PROTO((void));
|
|
|
|
|
|
/* from file misc.c */
|
|
|
|
/* Add a #define to the action file. */
|
|
extern void action_define PROTO(( char *defname, int value ));
|
|
|
|
/* Add the given text to the stored actions. */
|
|
extern void add_action PROTO(( char *new_text ));
|
|
|
|
/* True if a string is all lower case. */
|
|
extern int all_lower PROTO((char *));
|
|
|
|
/* True if a string is all upper case. */
|
|
extern int all_upper PROTO((char *));
|
|
|
|
/* Bubble sort an integer array. */
|
|
extern void bubble PROTO((int [], int));
|
|
|
|
/* Check a character to make sure it's in the expected range. */
|
|
extern void check_char PROTO((int c));
|
|
|
|
/* Replace upper-case letter to lower-case. */
|
|
extern Char clower PROTO((int));
|
|
|
|
/* Returns a dynamically allocated copy of a string. */
|
|
extern char *copy_string PROTO((const char *));
|
|
|
|
/* Returns a dynamically allocated copy of a (potentially) unsigned string. */
|
|
extern Char *copy_unsigned_string PROTO((Char *));
|
|
|
|
/* Shell sort a character array. */
|
|
extern void cshell PROTO((Char [], int, int));
|
|
|
|
/* Finish up a block of data declarations. */
|
|
extern void dataend PROTO((void));
|
|
|
|
/* Flush generated data statements. */
|
|
extern void dataflush PROTO((void));
|
|
|
|
/* Report an error message and terminate. */
|
|
extern void flexerror PROTO((const char[]));
|
|
|
|
/* Report a fatal error message and terminate. */
|
|
extern void flexfatal PROTO((const char[]));
|
|
|
|
/* Convert a hexadecimal digit string to an integer value. */
|
|
extern int htoi PROTO((Char[]));
|
|
|
|
/* Report an error message formatted with one integer argument. */
|
|
extern void lerrif PROTO((const char[], int));
|
|
|
|
/* Report an error message formatted with one string argument. */
|
|
extern void lerrsf PROTO((const char[], const char[]));
|
|
|
|
/* Spit out a "#line" statement. */
|
|
extern void line_directive_out PROTO((FILE*, int));
|
|
|
|
/* Mark the current position in the action array as the end of the section 1
|
|
* user defs.
|
|
*/
|
|
extern void mark_defs1 PROTO((void));
|
|
|
|
/* Mark the current position in the action array as the end of the prolog. */
|
|
extern void mark_prolog PROTO((void));
|
|
|
|
/* Generate a data statement for a two-dimensional array. */
|
|
extern void mk2data PROTO((int));
|
|
|
|
extern void mkdata PROTO((int)); /* generate a data statement */
|
|
|
|
/* Return the integer represented by a string of digits. */
|
|
extern int myctoi PROTO((char []));
|
|
|
|
/* Return character corresponding to escape sequence. */
|
|
extern Char myesc PROTO((Char[]));
|
|
|
|
/* Convert an octal digit string to an integer value. */
|
|
extern int otoi PROTO((Char [] ));
|
|
|
|
/* Output a (possibly-formatted) string to the generated scanner. */
|
|
extern void out PROTO((const char []));
|
|
extern void out_dec PROTO((const char [], int));
|
|
extern void out_dec2 PROTO((const char [], int, int));
|
|
extern void out_hex PROTO((const char [], unsigned int));
|
|
extern void out_line_count PROTO((const char []));
|
|
extern void out_str PROTO((const char [], const char []));
|
|
extern void out_str3
|
|
PROTO((const char [], const char [], const char [], const char []));
|
|
extern void out_str_dec PROTO((const char [], const char [], int));
|
|
extern void outc PROTO((int));
|
|
extern void outn PROTO((const char []));
|
|
|
|
/* Return a printable version of the given character, which might be
|
|
* 8-bit.
|
|
*/
|
|
extern char *readable_form PROTO((int));
|
|
|
|
/* Write out one section of the skeleton file. */
|
|
extern void skelout PROTO((void));
|
|
|
|
/* Output a yy_trans_info structure. */
|
|
extern void transition_struct_out PROTO((int, int));
|
|
|
|
/* Only needed when using certain broken versions of bison to build parse.c. */
|
|
extern void *yy_flex_xmalloc PROTO(( int ));
|
|
|
|
/* Set a region of memory to 0. */
|
|
extern void zero_out PROTO((char *, size_t));
|
|
|
|
|
|
/* from file nfa.c */
|
|
|
|
/* Add an accepting state to a machine. */
|
|
extern void add_accept PROTO((int, int));
|
|
|
|
/* Make a given number of copies of a singleton machine. */
|
|
extern int copysingl PROTO((int, int));
|
|
|
|
/* Debugging routine to write out an nfa. */
|
|
extern void dumpnfa PROTO((int));
|
|
|
|
/* Finish up the processing for a rule. */
|
|
extern void finish_rule PROTO((int, int, int, int));
|
|
|
|
/* Connect two machines together. */
|
|
extern int link_machines PROTO((int, int));
|
|
|
|
/* Mark each "beginning" state in a machine as being a "normal" (i.e.,
|
|
* not trailing context associated) state.
|
|
*/
|
|
extern void mark_beginning_as_normal PROTO((int));
|
|
|
|
/* Make a machine that branches to two machines. */
|
|
extern int mkbranch PROTO((int, int));
|
|
|
|
extern int mkclos PROTO((int)); /* convert a machine into a closure */
|
|
extern int mkopt PROTO((int)); /* make a machine optional */
|
|
|
|
/* Make a machine that matches either one of two machines. */
|
|
extern int mkor PROTO((int, int));
|
|
|
|
/* Convert a machine into a positive closure. */
|
|
extern int mkposcl PROTO((int));
|
|
|
|
extern int mkrep PROTO((int, int, int)); /* make a replicated machine */
|
|
|
|
/* Create a state with a transition on a given symbol. */
|
|
extern int mkstate PROTO((int));
|
|
|
|
extern void new_rule PROTO((void)); /* initialize for a new rule */
|
|
|
|
|
|
/* from file parse.y */
|
|
|
|
/* Build the "<<EOF>>" action for the active start conditions. */
|
|
extern void build_eof_action PROTO((void));
|
|
|
|
/* Write out a message formatted with one string, pinpointing its location. */
|
|
extern void format_pinpoint_message PROTO((char[], char[]));
|
|
|
|
/* Write out a message, pinpointing its location. */
|
|
extern void pinpoint_message PROTO((char[]));
|
|
|
|
/* Write out a warning, pinpointing it at the given line. */
|
|
extern void line_warning PROTO(( char[], int ));
|
|
|
|
/* Write out a message, pinpointing it at the given line. */
|
|
extern void line_pinpoint PROTO(( char[], int ));
|
|
|
|
/* Report a formatted syntax error. */
|
|
extern void format_synerr PROTO((char [], char[]));
|
|
extern void synerr PROTO((char [])); /* report a syntax error */
|
|
extern void format_warn PROTO((char [], char[]));
|
|
extern void warn PROTO((char [])); /* report a warning */
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extern void yyerror PROTO((char [])); /* report a parse error */
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extern int yyparse PROTO((void)); /* the YACC parser */
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/* from file scan.l */
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/* The Flex-generated scanner for flex. */
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extern int flexscan PROTO((void));
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/* Open the given file (if NULL, stdin) for scanning. */
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extern void set_input_file PROTO((char*));
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/* Wrapup a file in the lexical analyzer. */
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extern int yywrap PROTO((void));
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/* from file sym.c */
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/* Add symbol and definitions to symbol table. */
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extern int addsym PROTO((char[], char*, int, hash_table, int));
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/* Save the text of a character class. */
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extern void cclinstal PROTO ((Char [], int));
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/* Lookup the number associated with character class. */
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extern int ccllookup PROTO((Char []));
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/* Find symbol in symbol table. */
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extern struct hash_entry *findsym PROTO((char[], hash_table, int ));
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extern void ndinstal PROTO((char[], Char[])); /* install a name definition */
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extern Char *ndlookup PROTO((char[])); /* lookup a name definition */
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/* Increase maximum number of SC's. */
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|
extern void scextend PROTO((void));
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extern void scinstal PROTO((char[], int)); /* make a start condition */
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/* Lookup the number associated with a start condition. */
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extern int sclookup PROTO((char[]));
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/* from file tblcmp.c */
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/* Build table entries for dfa state. */
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extern void bldtbl PROTO((int[], int, int, int, int));
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extern void cmptmps PROTO((void)); /* compress template table entries */
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extern void expand_nxt_chk PROTO((void)); /* increase nxt/chk arrays */
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/* Finds a space in the table for a state to be placed. */
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extern int find_table_space PROTO((int*, int));
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extern void inittbl PROTO((void)); /* initialize transition tables */
|
|
/* Make the default, "jam" table entries. */
|
|
extern void mkdeftbl PROTO((void));
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|
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/* Create table entries for a state (or state fragment) which has
|
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* only one out-transition.
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|
*/
|
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extern void mk1tbl PROTO((int, int, int, int));
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/* Place a state into full speed transition table. */
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extern void place_state PROTO((int*, int, int));
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/* Save states with only one out-transition to be processed later. */
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extern void stack1 PROTO((int, int, int, int));
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/* from file yylex.c */
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extern int yylex PROTO((void));
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