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diff --git a/flexdef.h b/flexdef.h new file mode 100644 index 0000000..d038952 --- /dev/null +++ b/flexdef.h @@ -0,0 +1,1223 @@ + +/* flexdef - definitions file for flex */ + +/* Copyright (c) 1990 The Regents of the University of California. */ +/* All rights reserved. */ + +/* This code is derived from software contributed to Berkeley by */ +/* Vern Paxson. */ + +/* The United States Government has rights in this work pursuant */ +/* to contract no. DE-AC03-76SF00098 between the United States */ +/* Department of Energy and the University of California. */ + +/* This file is part of flex. */ + +/* Redistribution and use in source and binary forms, with or without */ +/* modification, are permitted provided that the following conditions */ +/* are met: */ + +/* 1. Redistributions of source code must retain the above copyright */ +/* notice, this list of conditions and the following disclaimer. */ +/* 2. Redistributions in binary form must reproduce the above copyright */ +/* notice, this list of conditions and the following disclaimer in the */ +/* documentation and/or other materials provided with the distribution. */ + +/* Neither the name of the University nor the names of its contributors */ +/* may be used to endorse or promote products derived from this software */ +/* without specific prior written permission. */ + +/* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR */ +/* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED */ +/* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR */ +/* PURPOSE. */ + +#ifndef FLEXDEF_H +#define FLEXDEF_H 1 + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif + +/* AIX requires this to be the first thing in the file. */ +#ifndef __GNUC__ +# if HAVE_ALLOCA_H +# include <alloca.h> +# else +# ifdef _AIX + #pragma alloca +# else +# ifndef alloca /* predefined by HP cc +Olibcalls */ +char *alloca (); +# endif +# endif +# endif +#endif + +#ifdef STDC_HEADERS +#include <stdio.h> +#include <stdlib.h> +#include <stdarg.h> +#include <setjmp.h> +#include <ctype.h> +#include <string.h> +#include <math.h> +#endif +#ifdef HAVE_ASSERT_H +#include <assert.h> +#else +#define assert(Pred) +#endif + +#ifdef HAVE_LIMITS_H +#include <limits.h> +#endif +#ifdef HAVE_UNISTD_H +#include <unistd.h> +#endif +#ifdef HAVE_NETINET_IN_H +#include <netinet/in.h> +#endif +#ifdef HAVE_SYS_PARAMS_H +#include <sys/params.h> +#endif +#ifdef HAVE_SYS_WAIT_H +#include <sys/wait.h> +#endif +#ifdef HAVE_STDBOOL_H +#include <stdbool.h> +#else +#define bool int +#define true 1 +#define false 0 +#endif +#include <regex.h> +#include "flexint.h" + +/* We use gettext. So, when we write strings which should be translated, we mark them with _() */ +#ifdef ENABLE_NLS +#ifdef HAVE_LOCALE_H +#include <locale.h> +#endif /* HAVE_LOCALE_H */ +#include "gettext.h" +#define _(String) gettext (String) +#else +#define _(STRING) STRING +#endif /* ENABLE_NLS */ + +/* Always be prepared to generate an 8-bit scanner. */ +#define CSIZE 256 +#define Char unsigned char + +/* Size of input alphabet - should be size of ASCII set. */ +#ifndef DEFAULT_CSIZE +#define DEFAULT_CSIZE 128 +#endif + +#ifndef PROTO +#if defined(__STDC__) +#define PROTO(proto) proto +#else +#define PROTO(proto) () +#endif +#endif + +#ifdef VMS +#ifndef __VMS_POSIX +#define unlink remove +#define SHORT_FILE_NAMES +#endif +#endif + +#ifdef MS_DOS +#define SHORT_FILE_NAMES +#endif + + +/* Maximum line length we'll have to deal with. */ +#define MAXLINE 2048 + +#ifndef MIN +#define MIN(x,y) ((x) < (y) ? (x) : (y)) +#endif +#ifndef MAX +#define MAX(x,y) ((x) > (y) ? (x) : (y)) +#endif +#ifndef ABS +#define ABS(x) ((x) < 0 ? -(x) : (x)) +#endif + + +/* ANSI C does not guarantee that isascii() is defined */ +#ifndef isascii +#define isascii(c) ((c) <= 0177) +#endif + +#define unspecified -1 + +/* Special chk[] values marking the slots taking by end-of-buffer and action + * numbers. + */ +#define EOB_POSITION -1 +#define ACTION_POSITION -2 + +/* Number of data items per line for -f output. */ +#define NUMDATAITEMS 10 + +/* Number of lines of data in -f output before inserting a blank line for + * readability. + */ +#define NUMDATALINES 10 + +/* transition_struct_out() definitions. */ +#define TRANS_STRUCT_PRINT_LENGTH 14 + +/* Returns true if an nfa state has an epsilon out-transition slot + * that can be used. This definition is currently not used. + */ +#define FREE_EPSILON(state) \ + (transchar[state] == SYM_EPSILON && \ + trans2[state] == NO_TRANSITION && \ + finalst[state] != state) + +/* Returns true if an nfa state has an epsilon out-transition character + * and both slots are free + */ +#define SUPER_FREE_EPSILON(state) \ + (transchar[state] == SYM_EPSILON && \ + trans1[state] == NO_TRANSITION) \ + +/* Maximum number of NFA states that can comprise a DFA state. It's real + * big because if there's a lot of rules, the initial state will have a + * huge epsilon closure. + */ +#define INITIAL_MAX_DFA_SIZE 750 +#define MAX_DFA_SIZE_INCREMENT 750 + + +/* A note on the following masks. They are used to mark accepting numbers + * as being special. As such, they implicitly limit the number of accepting + * numbers (i.e., rules) because if there are too many rules the rule numbers + * will overload the mask bits. Fortunately, this limit is \large/ (0x2000 == + * 8192) so unlikely to actually cause any problems. A check is made in + * new_rule() to ensure that this limit is not reached. + */ + +/* Mask to mark a trailing context accepting number. */ +#define YY_TRAILING_MASK 0x2000 + +/* Mask to mark the accepting number of the "head" of a trailing context + * rule. + */ +#define YY_TRAILING_HEAD_MASK 0x4000 + +/* Maximum number of rules, as outlined in the above note. */ +#define MAX_RULE (YY_TRAILING_MASK - 1) + + +/* NIL must be 0. If not, its special meaning when making equivalence classes + * (it marks the representative of a given e.c.) will be unidentifiable. + */ +#define NIL 0 + +#define JAM -1 /* to mark a missing DFA transition */ +#define NO_TRANSITION NIL +#define UNIQUE -1 /* marks a symbol as an e.c. representative */ +#define INFINITE_REPEAT -1 /* for x{5,} constructions */ + +#define INITIAL_MAX_CCLS 100 /* max number of unique character classes */ +#define MAX_CCLS_INCREMENT 100 + +/* Size of table holding members of character classes. */ +#define INITIAL_MAX_CCL_TBL_SIZE 500 +#define MAX_CCL_TBL_SIZE_INCREMENT 250 + +#define INITIAL_MAX_RULES 100 /* default maximum number of rules */ +#define MAX_RULES_INCREMENT 100 + +#define INITIAL_MNS 2000 /* default maximum number of nfa states */ +#define MNS_INCREMENT 1000 /* amount to bump above by if it's not enough */ + +#define INITIAL_MAX_DFAS 1000 /* default maximum number of dfa states */ +#define MAX_DFAS_INCREMENT 1000 + +#define JAMSTATE -32766 /* marks a reference to the state that always jams */ + +/* Maximum number of NFA states. */ +#define MAXIMUM_MNS 31999 +#define MAXIMUM_MNS_LONG 1999999999 + +/* Enough so that if it's subtracted from an NFA state number, the result + * is guaranteed to be negative. + */ +#define MARKER_DIFFERENCE (maximum_mns+2) + +/* Maximum number of nxt/chk pairs for non-templates. */ +#define INITIAL_MAX_XPAIRS 2000 +#define MAX_XPAIRS_INCREMENT 2000 + +/* Maximum number of nxt/chk pairs needed for templates. */ +#define INITIAL_MAX_TEMPLATE_XPAIRS 2500 +#define MAX_TEMPLATE_XPAIRS_INCREMENT 2500 + +#define SYM_EPSILON (CSIZE + 1) /* to mark transitions on the symbol epsilon */ + +#define INITIAL_MAX_SCS 40 /* maximum number of start conditions */ +#define MAX_SCS_INCREMENT 40 /* amount to bump by if it's not enough */ + +#define ONE_STACK_SIZE 500 /* stack of states with only one out-transition */ +#define SAME_TRANS -1 /* transition is the same as "default" entry for state */ + +/* The following percentages are used to tune table compression: + + * The percentage the number of out-transitions a state must be of the + * number of equivalence classes in order to be considered for table + * compaction by using protos. + */ +#define PROTO_SIZE_PERCENTAGE 15 + +/* The percentage the number of homogeneous out-transitions of a state + * must be of the number of total out-transitions of the state in order + * that the state's transition table is first compared with a potential + * template of the most common out-transition instead of with the first + * proto in the proto queue. + */ +#define CHECK_COM_PERCENTAGE 50 + +/* The percentage the number of differences between a state's transition + * table and the proto it was first compared with must be of the total + * number of out-transitions of the state in order to keep the first + * proto as a good match and not search any further. + */ +#define FIRST_MATCH_DIFF_PERCENTAGE 10 + +/* The percentage the number of differences between a state's transition + * table and the most similar proto must be of the state's total number + * of out-transitions to use the proto as an acceptable close match. + */ +#define ACCEPTABLE_DIFF_PERCENTAGE 50 + +/* The percentage the number of homogeneous out-transitions of a state + * must be of the number of total out-transitions of the state in order + * to consider making a template from the state. + */ +#define TEMPLATE_SAME_PERCENTAGE 60 + +/* The percentage the number of differences between a state's transition + * table and the most similar proto must be of the state's total number + * of out-transitions to create a new proto from the state. + */ +#define NEW_PROTO_DIFF_PERCENTAGE 20 + +/* The percentage the total number of out-transitions of a state must be + * of the number of equivalence classes in order to consider trying to + * fit the transition table into "holes" inside the nxt/chk table. + */ +#define INTERIOR_FIT_PERCENTAGE 15 + +/* Size of region set aside to cache the complete transition table of + * protos on the proto queue to enable quick comparisons. + */ +#define PROT_SAVE_SIZE 2000 + +#define MSP 50 /* maximum number of saved protos (protos on the proto queue) */ + +/* Maximum number of out-transitions a state can have that we'll rummage + * around through the interior of the internal fast table looking for a + * spot for it. + */ +#define MAX_XTIONS_FULL_INTERIOR_FIT 4 + +/* Maximum number of rules which will be reported as being associated + * with a DFA state. + */ +#define MAX_ASSOC_RULES 100 + +/* Number that, if used to subscript an array, has a good chance of producing + * an error; should be small enough to fit into a short. + */ +#define BAD_SUBSCRIPT -32767 + +/* Absolute value of largest number that can be stored in a short, with a + * bit of slop thrown in for general paranoia. + */ +#define MAX_SHORT 32700 + + +/* Declarations for global variables. */ + + +/* Variables for flags: + * printstats - if true (-v), dump statistics + * syntaxerror - true if a syntax error has been found + * eofseen - true if we've seen an eof in the input file + * ddebug - if true (-d), make a "debug" scanner + * trace - if true (-T), trace processing + * nowarn - if true (-w), do not generate warnings + * spprdflt - if true (-s), suppress the default rule + * interactive - if true (-I), generate an interactive scanner + * lex_compat - if true (-l), maximize compatibility with AT&T lex + * posix_compat - if true (-X), maximize compatibility with POSIX lex + * do_yylineno - if true, generate code to maintain yylineno + * useecs - if true (-Ce flag), use equivalence classes + * fulltbl - if true (-Cf flag), don't compress the DFA state table + * usemecs - if true (-Cm flag), use meta-equivalence classes + * fullspd - if true (-F flag), use Jacobson method of table representation + * gen_line_dirs - if true (i.e., no -L flag), generate #line directives + * performance_report - if > 0 (i.e., -p flag), generate a report relating + * to scanner performance; if > 1 (-p -p), report on minor performance + * problems, too + * backing_up_report - if true (i.e., -b flag), generate "lex.backup" file + * listing backing-up states + * C_plus_plus - if true (i.e., -+ flag), generate a C++ scanner class; + * otherwise, a standard C scanner + * reentrant - if true (-R), generate a reentrant C scanner. + * bison_bridge_lval - if true (--bison-bridge), bison pure calling convention. + * bison_bridge_lloc - if true (--bison-locations), bison yylloc. + * long_align - if true (-Ca flag), favor long-word alignment. + * use_read - if true (-f, -F, or -Cr) then use read() for scanner input; + * otherwise, use fread(). + * yytext_is_array - if true (i.e., %array directive), then declare + * yytext as a array instead of a character pointer. Nice and inefficient. + * do_yywrap - do yywrap() processing on EOF. If false, EOF treated as + * "no more files". + * csize - size of character set for the scanner we're generating; + * 128 for 7-bit chars and 256 for 8-bit + * yymore_used - if true, yymore() is used in input rules + * reject - if true, generate back-up tables for REJECT macro + * real_reject - if true, scanner really uses REJECT (as opposed to just + * having "reject" set for variable trailing context) + * continued_action - true if this rule's action is to "fall through" to + * the next rule's action (i.e., the '|' action) + * in_rule - true if we're inside an individual rule, false if not. + * yymore_really_used - whether to treat yymore() as really used, regardless + * of what we think based on references to it in the user's actions. + * reject_really_used - same for REJECT + */ + +extern int printstats, syntaxerror, eofseen, ddebug, trace, nowarn, + spprdflt; +extern int interactive, lex_compat, posix_compat, do_yylineno; +extern int useecs, fulltbl, usemecs, fullspd; +extern int gen_line_dirs, performance_report, backing_up_report; +extern int reentrant, bison_bridge_lval, bison_bridge_lloc; +extern bool ansi_func_defs, ansi_func_protos; +extern int C_plus_plus, long_align, use_read, yytext_is_array, do_yywrap; +extern int csize; +extern int yymore_used, reject, real_reject, continued_action, in_rule; + +extern int yymore_really_used, reject_really_used; + + +/* Variables used in the flex input routines: + * datapos - characters on current output line + * dataline - number of contiguous lines of data in current data + * statement. Used to generate readable -f output + * linenum - current input line number + * out_linenum - current output line number + * skelfile - the skeleton file + * skel - compiled-in skeleton array + * skel_ind - index into "skel" array, if skelfile is nil + * yyin - input file + * backing_up_file - file to summarize backing-up states to + * infilename - name of input file + * outfilename - name of output file + * headerfilename - name of the .h file to generate + * did_outfilename - whether outfilename was explicitly set + * prefix - the prefix used for externally visible names ("yy" by default) + * yyclass - yyFlexLexer subclass to use for YY_DECL + * do_stdinit - whether to initialize yyin/yyout to stdin/stdout + * use_stdout - the -t flag + * input_files - array holding names of input files + * num_input_files - size of input_files array + * program_name - name with which program was invoked + * + * action_array - array to hold the rule actions + * action_size - size of action_array + * defs1_offset - index where the user's section 1 definitions start + * in action_array + * prolog_offset - index where the prolog starts in action_array + * action_offset - index where the non-prolog starts in action_array + * action_index - index where the next action should go, with respect + * to "action_array" + */ + +extern int datapos, dataline, linenum, out_linenum; +extern FILE *skelfile, *yyin, *backing_up_file; +extern const char *skel[]; +extern int skel_ind; +extern char *infilename, *outfilename, *headerfilename; +extern int did_outfilename; +extern char *prefix, *yyclass, *extra_type; +extern int do_stdinit, use_stdout; +extern char **input_files; +extern int num_input_files; +extern char *program_name; + +extern char *action_array; +extern int action_size; +extern int defs1_offset, prolog_offset, action_offset, action_index; + + +/* Variables for stack of states having only one out-transition: + * onestate - state number + * onesym - transition symbol + * onenext - target state + * onedef - default base entry + * onesp - stack pointer + */ + +extern int onestate[ONE_STACK_SIZE], onesym[ONE_STACK_SIZE]; +extern int onenext[ONE_STACK_SIZE], onedef[ONE_STACK_SIZE], onesp; + + +/* Variables for nfa machine data: + * maximum_mns - maximal number of NFA states supported by tables + * current_mns - current maximum on number of NFA states + * num_rules - number of the last accepting state; also is number of + * rules created so far + * num_eof_rules - number of <<EOF>> rules + * default_rule - number of the default rule + * current_max_rules - current maximum number of rules + * lastnfa - last nfa state number created + * firstst - physically the first state of a fragment + * lastst - last physical state of fragment + * finalst - last logical state of fragment + * transchar - transition character + * trans1 - transition state + * trans2 - 2nd transition state for epsilons + * accptnum - accepting number + * assoc_rule - rule associated with this NFA state (or 0 if none) + * state_type - a STATE_xxx type identifying whether the state is part + * of a normal rule, the leading state in a trailing context + * rule (i.e., the state which marks the transition from + * recognizing the text-to-be-matched to the beginning of + * the trailing context), or a subsequent state in a trailing + * context rule + * rule_type - a RULE_xxx type identifying whether this a ho-hum + * normal rule or one which has variable head & trailing + * context + * rule_linenum - line number associated with rule + * rule_useful - true if we've determined that the rule can be matched + * rule_has_nl - true if rule could possibly match a newline + * ccl_has_nl - true if current ccl could match a newline + * nlch - default eol char + */ + +extern int maximum_mns, current_mns, current_max_rules; +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; +extern bool *rule_has_nl, *ccl_has_nl; +extern int nlch; + +/* 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_bool_array(size) \ + (bool *) allocate_array( size, sizeof( bool ) ) + +#define reallocate_bool_array(array,size) \ + (bool *) reallocate_array( (void *) array, size, sizeof( bool ) ) + +#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 */ +extern int ccl_set_diff (int a, int b); /* set difference of two ccls. */ +extern int ccl_set_union (int a, int b); /* set union of two ccls. */ + +/* 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 ((const char *, const char *)); + +/* Write out a string + newline at the current indentation level. */ +extern void indent_puts PROTO ((const 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 ((const char *defname, int value)); + +/* Add the given text to the stored actions. */ +extern void add_action PROTO ((const char *new_text)); + +/* True if a string is all lower case. */ +extern int all_lower PROTO ((register char *)); + +/* True if a string is all upper case. */ +extern int all_upper PROTO ((register 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 ((register const char *)); + +/* Returns a dynamically allocated copy of a (potentially) unsigned string. */ +extern Char *copy_unsigned_string PROTO ((register 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 *)); + +/* Report a fatal error with a pinpoint, and terminate */ +#if HAVE_DECL___FUNC__ +#define flex_die(msg) \ + do{ \ + fprintf (stderr,\ + _("%s: fatal internal error at %s:%d (%s): %s\n"),\ + program_name, __FILE__, (int)__LINE__,\ + __func__,msg);\ + FLEX_EXIT(1);\ + }while(0) +#else /* ! HAVE_DECL___FUNC__ */ +#define flex_die(msg) \ + do{ \ + fprintf (stderr,\ + _("%s: fatal internal error at %s:%d %s\n"),\ + program_name, __FILE__, (int)__LINE__,\ + msg);\ + FLEX_EXIT(1);\ + }while(0) +#endif /* ! HAVE_DECL___func__ */ + +/* 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 statment 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 ((const 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 *)); +extern void out_m4_define (const char* def, const char* val); + +/* 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, 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 ((register 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 ((const char *, const char *)); + +/* Write out a message, pinpointing its location. */ +extern void pinpoint_message PROTO ((const char *)); + +/* Write out a warning, pinpointing it at the given line. */ +extern void line_warning PROTO ((const char *, int)); + +/* Write out a message, pinpointing it at the given line. */ +extern void line_pinpoint PROTO ((const char *, int)); + +/* Report a formatted syntax error. */ +extern void format_synerr PROTO ((const char *, const char *)); +extern void synerr PROTO ((const char *)); /* report a syntax error */ +extern void format_warn PROTO ((const char *, const char *)); +extern void warn PROTO ((const char *)); /* report a warning */ +extern void yyerror PROTO ((const char *)); /* report a parse error */ +extern int yyparse PROTO ((void)); /* the YACC parser */ + + +/* from file scan.l */ + +/* The Flex-generated scanner for flex. */ +extern int flexscan PROTO ((void)); + +/* Open the given file (if NULL, stdin) for scanning. */ +extern void set_input_file PROTO ((char *)); + +/* Wrapup a file in the lexical analyzer. */ +extern int yywrap PROTO ((void)); + + +/* from file sym.c */ + +/* Save the text of a character class. */ +extern void cclinstal PROTO ((Char[], int)); + +/* Lookup the number associated with character class. */ +extern int ccllookup PROTO ((Char[])); + +extern void ndinstal PROTO ((const char *, Char[])); /* install a name definition */ +extern Char *ndlookup PROTO ((const char *)); /* lookup a name definition */ + +/* Increase maximum number of SC's. */ +extern void scextend PROTO ((void)); +extern void scinstal PROTO ((const char *, int)); /* make a start condition */ + +/* Lookup the number associated with a start condition. */ +extern int sclookup PROTO ((const char *)); + + +/* from file tblcmp.c */ + +/* Build table entries for dfa state. */ +extern void bldtbl PROTO ((int[], int, int, int, int)); + +extern void cmptmps PROTO ((void)); /* compress template table entries */ +extern void expand_nxt_chk PROTO ((void)); /* increase nxt/chk arrays */ + +/* Finds a space in the table for a state to be placed. */ +extern int find_table_space PROTO ((int *, int)); +extern void inittbl PROTO ((void)); /* initialize transition tables */ + +/* Make the default, "jam" table entries. */ +extern void mkdeftbl PROTO ((void)); + +/* Create table entries for a state (or state fragment) which has + * only one out-transition. + */ +extern void mk1tbl PROTO ((int, int, int, int)); + +/* Place a state into full speed transition table. */ +extern void place_state PROTO ((int *, int, int)); + +/* Save states with only one out-transition to be processed later. */ +extern void stack1 PROTO ((int, int, int, int)); + + +/* from file yylex.c */ + +extern int yylex PROTO ((void)); + +/* A growable array. See buf.c. */ +struct Buf { + void *elts; /* elements. */ + int nelts; /* number of elements. */ + size_t elt_size; /* in bytes. */ + int nmax; /* max capacity of elements. */ +}; + +extern void buf_init PROTO ((struct Buf * buf, size_t elem_size)); +extern void buf_destroy PROTO ((struct Buf * buf)); +extern struct Buf *buf_append +PROTO ((struct Buf * buf, const void *ptr, int n_elem)); +extern struct Buf *buf_concat PROTO((struct Buf* dest, const struct Buf* src)); +extern struct Buf *buf_strappend PROTO ((struct Buf *, const char *str)); +extern struct Buf *buf_strnappend +PROTO ((struct Buf *, const char *str, int nchars)); +extern struct Buf *buf_strdefine +PROTO ((struct Buf * buf, const char *str, const char *def)); +extern struct Buf *buf_prints PROTO((struct Buf *buf, const char *fmt, const char* s)); +extern struct Buf *buf_m4_define PROTO((struct Buf *buf, const char* def, const char* val)); +extern struct Buf *buf_m4_undefine PROTO((struct Buf *buf, const char* def)); +extern struct Buf *buf_print_strings PROTO((struct Buf * buf, FILE* out)); +extern struct Buf *buf_linedir PROTO((struct Buf *buf, const char* filename, int lineno)); + +extern struct Buf userdef_buf; /* a string buffer for #define's generated by user-options on cmd line. */ +extern struct Buf defs_buf; /* a char* buffer to save #define'd some symbols generated by flex. */ +extern struct Buf yydmap_buf; /* a string buffer to hold yydmap elements */ +extern struct Buf m4defs_buf; /* Holds m4 definitions. */ +extern struct Buf top_buf; /* contains %top code. String buffer. */ + +/* For blocking out code from the header file. */ +#define OUT_BEGIN_CODE() outn("m4_ifdef( [[M4_YY_IN_HEADER]],,[[") +#define OUT_END_CODE() outn("]])") + +/* For setjmp/longjmp (instead of calling exit(2)). Linkage in main.c */ +extern jmp_buf flex_main_jmp_buf; + +#define FLEX_EXIT(status) longjmp(flex_main_jmp_buf,(status)+1) + +/* Removes all \n and \r chars from tail of str. returns str. */ +extern char *chomp (char *str); + +/* ctype functions forced to return boolean */ +#define b_isalnum(c) (isalnum(c)?true:false) +#define b_isalpha(c) (isalpha(c)?true:false) +#define b_isascii(c) (isascii(c)?true:false) +#define b_isblank(c) (isblank(c)?true:false) +#define b_iscntrl(c) (iscntrl(c)?true:false) +#define b_isdigit(c) (isdigit(c)?true:false) +#define b_isgraph(c) (isgraph(c)?true:false) +#define b_islower(c) (islower(c)?true:false) +#define b_isprint(c) (isprint(c)?true:false) +#define b_ispunct(c) (ispunct(c)?true:false) +#define b_isspace(c) (isspace(c)?true:false) +#define b_isupper(c) (isupper(c)?true:false) +#define b_isxdigit(c) (isxdigit(c)?true:false) + +/* return true if char is uppercase or lowercase. */ +bool has_case(int c); + +/* Change case of character if possible. */ +int reverse_case(int c); + +/* return false if [c1-c2] is ambiguous for a caseless scanner. */ +bool range_covers_case (int c1, int c2); + +/* + * From "filter.c" + */ + +/** A single stdio filter to execute. + * The filter may be external, such as "sed", or it + * may be internal, as a function call. + */ +struct filter { + int (*filter_func)(struct filter*); /**< internal filter function */ + void * extra; /**< extra data passed to filter_func */ + int argc; /**< arg count */ + const char ** argv; /**< arg vector, \0-terminated */ + struct filter * next; /**< next filter or NULL */ +}; + +/* output filter chain */ +extern struct filter * output_chain; +extern struct filter *filter_create_ext PROTO((struct filter * chain, const char *cmd, ...)); +struct filter *filter_create_int PROTO((struct filter *chain, + int (*filter_func) (struct filter *), + void *extra)); +extern bool filter_apply_chain PROTO((struct filter * chain)); +extern int filter_truncate (struct filter * chain, int max_len); +extern int filter_tee_header PROTO((struct filter *chain)); +extern int filter_fix_linedirs PROTO((struct filter *chain)); + + +/* + * From "regex.c" + */ + +extern regex_t regex_linedir, regex_blank_line; +bool flex_init_regex(void); +void flex_regcomp(regex_t *preg, const char *regex, int cflags); +char *regmatch_dup (regmatch_t * m, const char *src); +char *regmatch_cpy (regmatch_t * m, char *dest, const char *src); +int regmatch_len (regmatch_t * m); +int regmatch_strtol (regmatch_t * m, const char *src, char **endptr, int base); +bool regmatch_empty (regmatch_t * m); + +/* From "scanflags.h" */ +typedef unsigned int scanflags_t; +extern scanflags_t* _sf_stk; +extern size_t _sf_top_ix, _sf_max; /**< stack of scanner flags. */ +#define _SF_CASE_INS 0x0001 +#define _SF_DOT_ALL 0x0002 +#define _SF_SKIP_WS 0x0004 +#define sf_top() (_sf_stk[_sf_top_ix]) +#define sf_case_ins() (sf_top() & _SF_CASE_INS) +#define sf_dot_all() (sf_top() & _SF_DOT_ALL) +#define sf_skip_ws() (sf_top() & _SF_SKIP_WS) +#define sf_set_case_ins(X) ((X) ? (sf_top() |= _SF_CASE_INS) : (sf_top() &= ~_SF_CASE_INS)) +#define sf_set_dot_all(X) ((X) ? (sf_top() |= _SF_DOT_ALL) : (sf_top() &= ~_SF_DOT_ALL)) +#define sf_set_skip_ws(X) ((X) ? (sf_top() |= _SF_SKIP_WS) : (sf_top() &= ~_SF_SKIP_WS)) +extern void sf_init(void); +extern void sf_push(void); +extern void sf_pop(void); + + +#endif /* not defined FLEXDEF_H */ |